{"type": "FeatureCollection", "features": [{"id": "10.1061/(asce)gt.1943-5606.0002242", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:18:39Z", "type": "Journal Article", "created": "2020-03-14", "title": "Physical Modeling of the Seismic Response of Gas Pipelines in Laterally Inhomogeneous Soil", "description": "AbstractThis paper reports on results from a series of 1-g, reduced-scale shake table tests of a 216-m-long portion of an onshore steel gas transmission pipeline embedded in horizontally layered so...", "keywords": ["gas pipelines", "inhomogeneous soil", "seismic excitation", "02 engineering and technology", "624", "530", "shake table experiment", "0201 civil engineering"]}, "links": [{"href": "https://ascelibrary.org/doi/pdf/10.1061/%28ASCE%29GT.1943-5606.0002242"}, {"href": "https://doi.org/10.1061/(asce)gt.1943-5606.0002242"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geotechnical%20and%20Geoenvironmental%20Engineering", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1061/(asce)gt.1943-5606.0002242", "name": "item", "description": "10.1061/(asce)gt.1943-5606.0002242", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1061/(asce)gt.1943-5606.0002242"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-05-01T00:00:00Z"}}, {"id": "10.1071/wf20117", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:18:45Z", "type": "Journal Article", "created": "2021-03-08", "title": "Laboratory study on the suppression of smouldering peat wildfires: effects of flow rate and wetting agent", "description": "

The application of water, or water mixed with suppressants, to combat wildfires is one of the most common firefighting methods but is rarely studied for smouldering peat wildfire, which is the largest type of fire worldwide in term of fuel consumption. We performed experiments by spraying suppressant to the top of a burning peat sample inside a reactor. A plant-based wetting agent suppressant was mixed with water at three concentrations: 0% (pure water), 1% (low concentration), and 5% (high concentration), and delivered with varying flowrates. The results showed that suppression time decreased non-linearly with flow rate. The average suppression time for the low-concentration solution was 39% lower than with just water, while the high-concentration solution reduced suppression time by 26%. The volume of fluid that contributes to the suppression of peat in our experiments is fairly constant at 5.7\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff892.1\uffe2\uff80\uff89L kg\uffe2\uff88\uff921 peat despite changes in flow rate and suppressant concentration. This constant volume suggests that suppression time is the duration needed to flood the peat layer and that the suppressant acts thermally and not chemically. The results provide a better understanding of the suppression mechanism of peat fires and can improve firefighting and mitigation strategies.

", "keywords": ["wetting", "Science & Technology", "550", "experiment", "smouldering", "0602 Ecology", "firefighting", "Forestry", "02 engineering and technology", "suppression", "15. Life on land", "7. Clean energy", "01 natural sciences", "6. Clean water", "0201 civil engineering", "mitigation", "13. Climate action", "0705 Forestry Sciences", "peatland", "0502 Environmental Science and Management", "Life Sciences & Biomedicine", "fire", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1071/wf20117"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Wildland%20Fire", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1071/wf20117", "name": "item", "description": "10.1071/wf20117", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1071/wf20117"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-03-09T00:00:00Z"}}, {"id": "10.1111/mice.12902", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:19:49Z", "type": "Journal Article", "created": "2022-08-09", "title": "Optimization and performance of metafoundations for seismic isolation of small modular reactors", "description": "Abstract

This paper aims to study the seismic mitigation of a typical nuclear small modular reactor (SMR) where extreme loading conditions are considered by the safe shutdown earthquake. For this purpose, to reproduce the main dynamic properties of the reactor's reinforced concrete system, a detailed structural model was synthetized, also taking into account the presence of the reactor pools. Thus, to protect the reactor from strong earthquakes, finite locally resonant multiple degrees of freedom metafoundations were developed; and resonator parameters were optimized by means of an improved frequency domain multivariate and multiobjective optimization procedure. Also, the stochastic nature of the seismic input was taken into account. It is proposed: (i) a linear metafoundation endowed with multiple cells, linear springs, and linear viscous dampers; and (ii) a foundation equipped with additional nonlinear vertical quasi\uffe2\uff80\uff90zero stiffness (QZS) cells. QZS cells were obtained by horizontally precompressed springs in an unstable state with vertical springs in parallel. With this arrangement, additional flexibility and dissipation against nonsymmetrical modes of the SMR and vertical seismic loadings are proposed. It was shown in both cases, how each metafoundation was successfully optimized via a sensitivity\uffe2\uff80\uff90based parameter grouping strategy and a hybrid grid searching algorithm. Thus, the performance of the optimized metafoundations was assessed by means of frequency and time history analyses; and finally, results were compared with an SMR endowed with both rigid foundation and conventional base\uffe2\uff80\uff90isolation solutions.

Este trabalho tem por objetivo avaliar o efeito da temperatura de queima nas propriedades de uma cer\u00e2mica constitu\u00edda por argila caulin\u00edtica e incorporada com at\u00e9 20% em peso de chamote. Foram preparados corpos de prova cil\u00edndricos por prensagem uniaxial a 20 MPa para queima em forno de laborat\u00f3rio de 500 a 1100 \u00baC. As propriedades avaliadas foram densidade aparente, retra\u00e7\u00e3o diametral, absor\u00e7\u00e3o de \u00e1gua e resist\u00eancia mec\u00e2nica. A microestrutura das cer\u00e2micas foi avaliada por microscopia eletr\u00f4nica de varredura e porosimetria de merc\u00fario. Os resultados indicaram que n\u00e3o houve varia\u00e7\u00e3o significativa nas propriedades avaliadas entre 500 e 900 \u00baC. A partir da\u00ed, ocorreu uma redu\u00e7\u00e3o brusca da porosidade que ocasionou um decr\u00e9scimo da absor\u00e7\u00e3o de \u00e1gua e melhoria da resist\u00eancia mec\u00e2nica. A incorpora\u00e7\u00e3o de 5% de chamote praticamente n\u00e3o alterou as propriedades da cer\u00e2mica. Entretanto, foi observado que a adi\u00e7\u00e3o de maiores quantidades de chamote reduziu a resist\u00eancia mec\u00e2nica de queima da cer\u00e2mica.

", "keywords": ["red ceramic", "temperatura", "microstructure", "temperature", "02 engineering and technology", "grog", "0201 civil engineering", "microestrutura", "propriedades", "properties", "Cer\u00e2mica vermelha", "waste", "rejeito", "chamote"]}, "links": [{"href": "https://doi.org/10.1590/s0366-69132009000300014"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Cer%C3%A2mica", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/s0366-69132009000300014", "name": "item", "description": "10.1590/s0366-69132009000300014", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/s0366-69132009000300014"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-09-01T00:00:00Z"}}, {"id": "10.2478/jtam-2018-0004", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:21:21Z", "type": "Journal Article", "created": "2018-04-12", "title": "Numerical Solutions for Nonlinear High Damping Rubber Bearing Isolators: Newmark\u2019s Method with Netwon-Raphson Iteration Revisited", "description": "Abstract

Numerical methods for the solution of dynamical problems in engineering go back to 1950. The most famous and widely-used time stepping algorithm was developed by Newmark in 1959. In the present study, for the first time, the Newmark algorithm is developed for the case of the trilinear hysteretic model, a model that was used to describe the shear behaviour of high damping rubber bearings. This model is calibrated against free-vibration field tests implemented on a hybrid base isolated building, namely the Solarino project in Italy, as well as against laboratory experiments. A single-degree-of-freedom system is used to describe the behaviour of a low-rise building isolated with a hybrid system comprising high damping rubber bearings and low friction sliding bearings. The behaviour of the high damping rubber bearings is simulated by the trilinear hysteretic model, while the description of the behaviour of the low friction sliding bearings is modeled by a linear Coulomb friction model. In order to prove the effectiveness of the numerical method we compare the analytically solved trilinear hysteretic model calibrated from free-vibration field tests (Solarino project) against the same model solved with the Newmark method with Netwon-Raphson iteration. Almost perfect agreement is observed between the semi-analytical solution and the fully numerical solution with Newmark\uffe2\uff80\uff99s time integration algorithm. This will allow for extension of the trilinear mechanical models to bidirectional horizontal motion, to time-varying vertical loads, to multi-degree-of-freedom-systems, as well to generalized models connected in parallel, where only numerical solutions are possible.

", "keywords": ["0211 other engineering and technologies", "02 engineering and technology", "0201 civil engineering"]}, "links": [{"href": "http://www.degruyter.com/view/j/jtam.2018.48.issue-1/jtam-2018-0004/jtam-2018-0004.pdf"}, {"href": "https://doi.org/10.2478/jtam-2018-0004"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Theoretical%20and%20Applied%20Mechanics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2478/jtam-2018-0004", "name": "item", "description": "10.2478/jtam-2018-0004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2478/jtam-2018-0004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-03-01T00:00:00Z"}}, {"id": "10.31224/osf.io/r8xau", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:21:26Z", "type": "Journal Article", "created": "2021-09-02", "title": "Multi-Axial Hybrid Fire Testing based on Dynamic Relaxation", "description": "

This technical note presents the experimental validation of a hybrid fire testing coordination algorithm recently developed by some of the authors. For the first time, the algorithm is applied to solve the static response of a multiple-degrees-of-freedom hybrid model.

", "keywords": ["Coordination algorithms", "Fire test", "Dynamic relaxation", "Computer science", "bepress|Engineering", "General Physics and Astronomy", "02 engineering and technology", "0201 civil engineering", "Control theory", "engrXiv|Engineering|Civil and Environmental Engineering", "0202 electrical engineering", " electronic engineering", " information engineering", "General Materials Science", "Safety", " Risk", " Reliability and Quality", "Partitioned time integration", "Hybrid fire testing", "engrXiv|Engineering|Civil and Environmental Engineering|Structural Engineering", "Technical note", "General Chemistry", "Experimental validation", "Hybrid fire testing; Dynamic relaxation; Partitioned time integration", "engrXiv|Engineering", "bepress|Engineering|Civil and Environmental Engineering", "Static response", "bepress|Engineering|Civil and Environmental Engineering|Structural Engineering", "Multi axial", "Hybrid model"]}, "links": [{"href": "https://doi.org/10.31224/osf.io/r8xau"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Fire%20Safety%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.31224/osf.io/r8xau", "name": "item", "description": "10.31224/osf.io/r8xau", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.31224/osf.io/r8xau"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-02T00:00:00Z"}}, {"id": "10.2749/vancouver.2017.0809", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:21:26Z", "type": "Journal Article", "created": "2021-02-09", "title": "Surrogate Modelling For Fatigue Damage of Wind-Turbine Blades Using Polynomial Chaos Expansions and Non-Negative Matrix Factorization", "description": "

A computational approach for the estimation of fatigue degradation of composite wind turbine blades by means of time domain aero-servo-elastic simulations is proposed. Wind turbine blades are subjected throughout their lifetime to highly stochastic loading. Fatigue damage of the composite reinforcement of the wind turbine blades has been identified early on in the wind turbine design practice as a factor driving design. A simple fatigue accumulation model is utilized for the spar cap reinforcement of a wind-turbine blade. Non-Negative Matrix Factorization (NMF) for the damage accumulation random field is used for dimensionality reduction. An approximate computationally efficient model, relying on Polynomial Chaos Expansion (PCE) of the damage state with respect to probabilistically modelled mean wind and turbulence intensity is derived. The framework is exemplified in a case-study of a 1.5MW wind turbine.

", "keywords": ["thin walled composite beam", "Composite fatigue", "long term fatigue assessment", "Aero-elastic simulation", "Gram-Schmidt PCE", "Wind Turbine", "0202 electrical engineering", " electronic engineering", " information engineering", "fatigue degradation", "NMF", "02 engineering and technology", "7. Clean energy", "0201 civil engineering"], "contacts": [{"organization": "Mylonas, Charilaos, Abdallah, Imad, Chatzi, Eleni,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2749/vancouver.2017.0809"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/IABSE%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2749/vancouver.2017.0809", "name": "item", "description": "10.2749/vancouver.2017.0809", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2749/vancouver.2017.0809"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-01-01T00:00:00Z"}}, {"id": "10.3130/aijs.71.57_2", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:21:27Z", "type": "Journal Article", "created": "2017-02-17", "title": "RESPONSE CONTROL PERFORMANCE OF SEMI-ACTIVE ISOLATION SYSTEM USING THE GS CONTROLE FOR A TWO-DEGREE-OF-FREEDOM STRUCTURE WITH MAGNETO-RHEOLOGICAL FLUID DAMPER", "keywords": ["0211 other engineering and technologies", "02 engineering and technology", "0201 civil engineering"], "contacts": [{"organization": "Namihiko INOUE, Morimasa WATAKABE, Hidekazu NISHIMURA, Hiroaki RYUJIN, Jun NAKASONE, Yoshiya NAKAMURA,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.3130/aijs.71.57_2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Structural%20and%20Construction%20Engineering%20%28Transactions%20of%20AIJ%29", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3130/aijs.71.57_2", "name": "item", "description": "10.3130/aijs.71.57_2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3130/aijs.71.57_2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-01-01T00:00:00Z"}}, {"id": "10.3389/fbuil.2017.00069", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:21:29Z", "type": "Journal Article", "created": "2017-12-07", "title": "Gaussian Process Time-Series Models for Structures under Operational Variability", "description": "Open AccessISSN:2297-3362", "keywords": ["metamodels", "random coefficient", "02 engineering and technology", "Engineering (General). Civil engineering (General)", "0201 civil engineering", "time-series models", "HT165.5-169.9", "Structural Health Monitoring", "Structural Health Monitoring; Gaussian Process Time-Series Models", "gaussian process", "TA1-2040", "Gaussian Process Time-Series Models", "uncertainty", "City planning"]}, "links": [{"href": "https://doi.org/10.3389/fbuil.2017.00069"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Frontiers%20in%20Built%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3389/fbuil.2017.00069", "name": "item", "description": "10.3389/fbuil.2017.00069", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3389/fbuil.2017.00069"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-12-08T00:00:00Z"}}, {"id": "10.3389/fmech.2018.00018", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:21:31Z", "type": "Journal Article", "created": "2018-11-20", "title": "The Role of Heat Transfer Limitations in Polymer Pyrolysis at the Microscale", "description": "Pyrolysis of synthetic or natural polymers is an important process in many industries such as fire safety, thermal recycling, and biomass power generation. The kinetics of pyrolysis is usually studied by thermogravimetric analysis (TGA), which is based on measuring the mass loss of a microscale sample and measuring the temperature of the surrounding fluid during controlled heating. The literature is rich in TGA measurements, which are often assumed to be governed solely by chemical kinetics. Heat and mass transfer effects, however, can occur when the sample mass is too large. Only a few studies in the literature quantify the threshold for the initial mass, above which heat transfer effects are significant. Here, we systematically analyse the role of heat transfer in TGA measurements, review existing formulations, and provide a novel threshold for the maximum sample mass. We focus on the natural polymer cellulose, a surrogate for biomass, and split the problem into heat transfer within the sample (intraparticle) and between the sample and the fluid (interparticle). Using dimensional analysis we derive two upper bound thresholds for the initial sample mass as a function of heating. One threshold is calculated based on interparticle heat transfer and depends on flow and heating conditions as well as material and fluid properties. The other is calculated based on intraparticle heat transfer and depends on heating conditions and material properties. Both thresholds were validated with measurements and previous studies from the literature. Comparing both thresholds shows that the maximum sample mass in a TGA is dictated by interparticle heat transfer and rapidly reduces with heating rate from 1.8 mg at 10 K/min to 0.15 mg at 50 K/min. These results enable the selection of appropriate sample masses and heating conditions in TGA measurements, which in turn will lead to a better understanding of polymer pyrolysis.", "keywords": ["TGA", "thermal lag", "Mechanical Engineering", "02 engineering and technology", "0915 Interdisciplinary Engineering", "chemistry", "7. Clean energy", "Industrial and Manufacturing Engineering", "cellulose", "Computer Science Applications", "0201 civil engineering", "12. Responsible consumption", "kinetics", "13. Climate action", "transport", "TJ1-1570", "General Materials Science", "Mechanical engineering and machinery", "0204 chemical engineering", "0913 Mechanical Engineering"], "contacts": [{"organization": "Richter, F, Rein, G,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.3389/fmech.2018.00018"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Frontiers%20in%20Mechanical%20Engineering", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3389/fmech.2018.00018", "name": "item", "description": "10.3389/fmech.2018.00018", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3389/fmech.2018.00018"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-11-20T00:00:00Z"}}, {"id": "10.3390/geotechnics3030032", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:21:43Z", "type": "Journal Article", "created": "2023-07-03", "title": "Meta-Material Layout for the Blast Protection of Above-Ground Steel Pipes", "description": "

The current study investigates the capacity of the proposed meta-material layout for the blast protection of above-ground steel pipes against explosions. The philosophy of the meta-material layout\u2019s design is described adequately, and the 1D periodic structures\u2019 theory is adopted for the analytical prediction of the layout\u2019s band-gaps. The special characteristics of the blast loading are explained, and specific time-related parameters are calculated. The layout is tested numerically for nine explosion scenarios of various magnitude via the finite element program ABAQUS, and the CONWEP model is selected for the simulation of the explosions. The results demonstrate a significant reduction in the maximum displacements developed on the pipe\u2019s spring line and crown within a blast loading. This study composes an extension of the author\u2019s previous research on buried steel pipes and surface explosion, advancing now the applicability of the meta-material layouts for the cases of above-ground steel pipes towards explosions and blast hazards. The outer goal is the investigation and the further spreading of the beneficial exploitation of meta-materials concepts for the scope of the pipelines\u2019 effective blast protection, readdressing that this way is a major hazard for this type of structure and a gap in the current literature.

", "keywords": ["Dynamic and structural geology", "0203 mechanical engineering", "meta-material; pipelines; explosion; blast loading; band-gaps; periodic layering", "periodic layering", "meta-material", "band-gaps", "QE500-639.5", "02 engineering and technology", "explosion", "blast loading", "pipelines", "0201 civil engineering"]}, "links": [{"href": "http://www.mdpi.com/2673-7094/3/3/32/pdf"}, {"href": "https://doi.org/10.3390/geotechnics3030032"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geotechnics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/geotechnics3030032", "name": "item", "description": "10.3390/geotechnics3030032", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/geotechnics3030032"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-07-01T00:00:00Z"}}, {"id": "10.3929/ethz-b-000278733", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:22:02Z", "type": "Journal Article", "created": "2018-07-06", "title": "Cost\u2013benefit optimization of structural health monitoring sensor networks", "description": "

Structural health monitoring (SHM) allows the acquisition of information on the structural integrity of any mechanical system by processing data, measured through a set of sensors, in order to estimate relevant mechanical parameters and indicators of performance. Herein we present a method to perform the cost\uffe2\uff80\uff93benefit optimization of a sensor network by defining the density, type, and positioning of the sensors to be deployed. The effectiveness (benefit) of an SHM system may be quantified by means of information theory, namely through the expected Shannon information gain provided by the measured data, which allows the inherent uncertainties of the experimental process (i.e., those associated with the prediction error and the parameters to be estimated) to be accounted for. In order to evaluate the computationally expensive Monte Carlo estimator of the objective function, a framework comprising surrogate models (polynomial chaos expansion), model order reduction methods (principal component analysis), and stochastic optimization methods is introduced. Two optimization strategies are proposed: the maximization of the information provided by the measured data, given the technological, identifiability, and budgetary constraints; and the maximization of the information\uffe2\uff80\uff93cost ratio. The application of the framework to a large-scale structural problem, the Pirelli tower in Milan, is presented, and the two comprehensive optimization methods are compared.

", "keywords": ["Stochastic Processes", "structural health monitoring", "structural health monitoring; Bayesian inference; cost\u2013benefit analysis; stochastic optimization; information theory; Bayesian experimental design; surrogate modeling; model order reduction", "Chemical technology", "Cost-Benefit Analysis", "Bayesian inference", "Bayesian experimental design", "Uncertainty", "Bayes Theorem", "TP1-1185", "02 engineering and technology", "stochastic optimization", "Bayesian experimental design; Bayesian inference; Benefit analysis; Cost; Information theory; Model order reduction; Stochastic optimization; Structural health monitoring; Surrogate modeling; Algorithms; Monte Carlo Method; Nonlinear Dynamics; Stochastic Processes; Uncertainty; Bayes Theorem; Cost-Benefit Analysis; Analytical Chemistry; Atomic and Molecular Physics", " and Optics; Biochemistry; Instrumentation; Electrical and Electronic Engineering", "Article", "surrogate modeling", "0201 civil engineering", "Nonlinear Dynamics", "model order reduction", "cost\u2013benefit analysis", "Monte Carlo Method", "Algorithms", "information theory"]}, "links": [{"href": "http://www.mdpi.com/1424-8220/18/7/2174/pdf"}, {"href": "https://re.public.polimi.it/bitstream/11311/1085132/1/Sensors_2018b.pdf"}, {"href": "https://doi.org/10.3929/ethz-b-000278733"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Sensors", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3929/ethz-b-000278733", "name": "item", "description": "10.3929/ethz-b-000278733", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3929/ethz-b-000278733"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-07-06T00:00:00Z"}}, {"id": "10.3390/s17040720", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:21:53Z", "type": "Journal Article", "created": "2017-03-30", "title": "A Data-Driven Diagnostic Framework for Wind Turbine Structures: A Holistic Approach", "description": "

The complex dynamics of operational wind turbine (WT) structures challenges the applicability of existing structural health monitoring (SHM) strategies for condition assessment. At the center of Europe\uffe2\uff80\uff99s renewable energy strategic planning, WT systems call for implementation of strategies that may describe the WT behavior in its complete operational spectrum. The framework proposed in this paper relies on the symbiotic treatment of acting environmental/operational variables and the monitored vibration response of the structure. The approach aims at accurate simulation of the temporal variability characterizing the WT dynamics, and subsequently at the tracking of the evolution of this variability in a longer-term horizon. The bi-component analysis tool is applied on long-term data, collected as part of continuous monitoring campaigns on two actual operating WT structures located in different sites in Germany. The obtained data-driven structural models verify the potential of the proposed strategy for development of an automated SHM diagnostic tool.

", "keywords": ["operational spectrum", "Chemical technology", "time varying autoregressive moving average (TV-ARMA) models", "Operational spectrum", "wind turbines; data-driven framework; uncertainty propagation; operational spectrum; time varying autoregressive moving average (TV-ARMA) models; polynomial chaos expansion (PCE)", "Data-driven framework", "uncertainty propagation", "TP1-1185", "02 engineering and technology", "7. Clean energy", "data-driven framework", "Article", "0201 civil engineering", "13. Climate action", "wind turbines", "polynomial chaos expansion (PCE)", "Uncertainty propagation", "Wind turbines", "Data-driven framework; Operational spectrum; Polynomial chaos expansion (PCE); Time varying autoregressive moving average (TV-ARMA) models; Uncertainty propagation; Wind turbines", "Polynomial chaos expansion (PCE)", "Time varying autoregressive moving average (TV-ARMA) models"]}, "links": [{"href": "http://www.mdpi.com/1424-8220/17/4/720/pdf"}, {"href": "https://doi.org/10.3390/s17040720"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Sensors", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/s17040720", "name": "item", "description": "10.3390/s17040720", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/s17040720"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-03-30T00:00:00Z"}}, {"id": "10.3390/s21010142", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:21:53Z", "type": "Journal Article", "created": "2020-12-28", "title": "Comparing Direct Observation of Torsion with Array-Derived Rotation in Civil Engineering Structures", "description": "

In this article, we analyze the rotation rates in a building derived from a network of translation sensors and recorded by a rotation sensor. The building is Grenoble city hall, a reinforced concrete structure with permanent accelerometric translation sensors at the top and bottom of the building. A temporary experiment was conducted, consisting in installing a BlueSeis-3A rotation sensor for more than 24 h at the top of the structure. The ambient vibrations were analyzed. The amplitudes of translation accelerations and rotation rates at the top and bottom of the building, along with their variations over time, were analyzed. The acceleration/rotation ratios were then compared with the impulse wave velocities derived from seismic interferometry by deconvolution between the top and bottom. Perspectives with regard to building imaging, time monitoring of structural integrity and understanding the contribution of rotations to the structure\uffe2\uff80\uff99s response are discussed, offering new suggestions for research projects.

", "keywords": ["570", "structural health monitoring (SHM)", "Chemical technology", "Communication", "[SDU.STU]Sciences of the Universe [physics]/Earth Sciences", "TP1-1185", "02 engineering and technology", "530", "rotation", "buildings", "City-Hall Grenoble", "0201 civil engineering", "13. Climate action", "11. Sustainability", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "array-derived", "civil engineering"], "contacts": [{"organization": "Gu\u00e9guen, Philippe, Guattari, Fr\u00e9d\u00e9ric, Aubert, Coralie, Laudat, Theo,", "roles": ["creator"]}]}, "links": [{"href": "https://www.mdpi.com/1424-8220/21/1/142/pdf"}, {"href": "https://doi.org/10.3390/s21010142"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Sensors", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/s21010142", "name": "item", "description": "10.3390/s21010142", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/s21010142"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-12-28T00:00:00Z"}}, {"id": "10.3929/ethz-b-000442909", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:22:02Z", "type": "Journal Article", "title": "A physics-based, local POD basis approach for multi-parametric reduced order models", "description": "At the dawn of Industry 4.0, it has become apparent that assessment of engineered systems should be informed from the state of the system \u201cas-is\u201d. To this end, data needs to be fused with adequate and efficient system models. Such system models should account for the underlying physics and the possibly nonlinear dynamic processes involved. This paper introduces a physics-based parametric formulation for nonlinear structural systems. A Reduced Order Model (ROM) of the high fidelity system is developed, retaining the dependencies on system properties and on temporal and spectral characteristics of the excitation. The ROM formulation relies on i) Proper Orthogonal Decomposition applied to snapshots of the nonlinear response, and ii) manifold interpolation of the resulting projection bases. Its performance is evaluated on a 3D earthquake-excited shear frame with nonlinear couplings. The developed ROM can be exploited for a number of tasks including monitoring, diagnostics and residual life estimation of critical components.", "keywords": ["Parametric modeling", "Reduced order model; Nonlinear dynamical systems; Earthquake ground motions; Parametric modeling", "Reduced order model", "02 engineering and technology", "Nonlinear dynamical systems", "Earthquake ground motions", "0210 nano-technology", "0201 civil engineering"]}, "links": [{"href": "https://doi.org/10.3929/ethz-b-000442909"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Conference%20on%20Noise%20and%20Vibration%20Engineering%20%28ISMA%202020%29%20and%20International%20Conference%20on%20Uncertainty%20in%20Structural%20Dynamics%20%28USD%202020%29", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3929/ethz-b-000442909", "name": "item", "description": "10.3929/ethz-b-000442909", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3929/ethz-b-000442909"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-01-01T00:00:00Z"}}, {"id": "10.3929/ethz-b-000445427", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:22:02Z", "type": "Journal Article", "created": "2020-09-08", "title": "GP-ARX-Based Structural Damage Detection and Localization under Varying Environmental Conditions", "description": "

The representation of structural dynamics in the absence of physics-based models, is often accomplished through the identification of parametric models, such as the autoregressive with exogenous inputs, e.g. ARX models. When the structure is amenable to environmental variations, parameter-varying extensions of the original ARX model can be implemented, allowing for tracking of the operational variability. Yet, the latter occurs in sufficiently longer time-scales (days, weeks, months), as compared to system dynamics. For inferring a \uffe2\uff80\uff9cglobal\uffe2\uff80\uff9d, long time-scale varying ARX model, data from a full operational cycle has to typically become available. In addition, when the sensor network comprises multiple nodes, the identification of long time-scale varying, vector ARX models grow in complexity. We address these issues by proposing a distributed framework for structural identification, damage detection and localization. Its main features are: (i) the individual estimation of local, single-input-single-output ARX models at every operational point; (ii) the long time-scale representation of each individual ARX coefficient via a Gaussian process regression, which captures dependency on varying Environmental and Operational Conditions (EOCs); (iii) the establishment of a distributed residual generation algorithm for damage detection, which produces time-series of well-defined stationary statistics, with detected discrepancies used for damage diagnosis; and, (iv) exploitation of ARX-inferred mode shape curvatures, obtained via ARX-inferred global state-space models, of the healthy and damaged states, for damage localization. The method is assessed via application on two numerical case studies of different complexity, with the results confirming its efficacy for diagnostics under varying EOCs.

", "keywords": ["Technology", "0209 industrial biotechnology", "varying environmental and operational conditions", "Structural health monitoring", "structural health monitoring", "Damage detection and localization", "T", "mode shape curvatures", "distributed sensor network", "Autoregressive with exogenous inputs", "02 engineering and technology", "0201 civil engineering", "autoregressive with exogenous inputs", "Structural health monitoring; Varying environmental and operational conditions; Damage detection and localization; Gaussian process regression; Autoregressive with exogenous inputs; Distributed sensor network; Mode shape curvatures", "Distributed sensor network", "Mode shape curvatures", "damage detection and localization", "Varying environmental and operational conditions", "Gaussian process regression"]}, "links": [{"href": "http://www.mdpi.com/2224-2708/9/3/41/pdf"}, {"href": "https://doi.org/10.3929/ethz-b-000445427"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Sensor%20and%20Actuator%20Networks", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3929/ethz-b-000445427", "name": "item", "description": "10.3929/ethz-b-000445427", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3929/ethz-b-000445427"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-09-08T00:00:00Z"}}, {"id": "10.47964/1120.9340.19963", "type": "Feature", "geometry": null, "properties": {"license": "unspecified", "updated": "2026-06-23T16:22:09Z", "type": "Journal Article", "created": "2020-12-02", "title": "ADVANCED NEGATIVE STIFFNESS VIBRATION ABSORBERS COUPLED WITH SOIL-STRUCTURE INTERACTION FOR SEISMIC PROTECTION OF BUILDINGS", "keywords": ["02 engineering and technology", "0201 civil engineering"], "contacts": [{"organization": "Kapasakalis, Konstantinos, Alvertos, Antonios, Mantakas, Antonios, Antoniadis, Ioannis, Sapountzakis, Evangelos,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.47964/1120.9340.19963"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20XI%20International%20Conference%20on%20Structural%20Dynamics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.47964/1120.9340.19963", "name": "item", "description": "10.47964/1120.9340.19963", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.47964/1120.9340.19963"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-01-01T00:00:00Z"}}, {"id": "10.5281/zenodo.10047723", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:22:43Z", "type": "Journal Article", "created": "2023-01-20", "title": "Vertical seismic absorber utilizing inertance and negative stiffness implemented with gas springs", "description": "Supported by: European Union\u2032s Horizon 2020 Research and Innovation Programme under the Marie Sk\u0142odowska-Curie Grant No. INSPIRE-813424 ('INSPIRE\u2014Innovative Ground Interface Concepts for Structure Protection') The final publication is available at www.springerlink.com .", "keywords": ["0211 other engineering and technologies", "02 engineering and technology", "7. Clean energy", "0201 civil engineering"]}, "links": [{"href": "https://link.springer.com/content/pdf/10.1007/s11803-023-2163-2.pdf"}, {"href": "https://doi.org/10.5281/zenodo.10047723"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Earthquake%20Engineering%20and%20Engineering%20Vibration", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.10047723", "name": "item", "description": "10.5281/zenodo.10047723", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.10047723"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-01-01T00:00:00Z"}}, {"id": "10.5281/zenodo.3463383", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:24:14Z", "type": "Journal Article", "created": "2021-02-14", "title": "Guidelines and codes for liquefaction mitigation by ground improvement", "description": "

Ground improvement has become one of the most effective tools of geotechnical engineering, being adopted for an always larger variety of civil engineering applications. To reduce the role of subjective choices of operators, the use of different techniques tends to be codified by specific guidelines. In the European Union there is an ongoing effort to standardize execution and design within codes continuously reviewed by designated committees. A widespread and systematic standardisation on the ground improvement as a mean to mitigate the effects of liquefaction on buildings and infrastructures is missing. The paper presents and overview of traditional and new ground improvement technologies suitable for this application. The methods are firstly classified by considering their effects on the ground (e.g. densification, stabilization, drainage, desaturation, etc.). Design principles are then outlined for new or pre-existing buildings and infrastructures, considering the ongoing review process of the design Eurocodes.

", "keywords": ["Critical infrastructures", "Ground improvement", "Liquefaction", "Eurocodes", "11. Sustainability", "0211 other engineering and technologies", "Liquefaction", " critical infrastructures", " ground improvement", " standardisation", " Euroc", "Standardisation", "02 engineering and technology", "0201 civil engineering"], "contacts": [{"organization": "Modoni, Giuseppe, Croce, Paolo, Proia, Roberta, Spacagna, Rose Line,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.3463383"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/IABSE%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.3463383", "name": "item", "description": "10.5281/zenodo.3463383", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.3463383"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"id": "10.5281/zenodo.3465205", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:24:15Z", "type": "Journal Article", "title": "ASSESSMENT OF SEISMIC SITE RESPONSE BASED ON MICROTREMOR MEASUREMENTS", "description": "Microtremor measurements is a cost-effective and non-invasive technique based on the ambient vibrations recordings of three components at ground surface. It is used to estimate the fundamental frequency of soils, f0, and
its amplification ratio, A0, based on the spectral ratio between the horizontal (H) and vertical (V) components of the measurements. In the scope of the H2020 EU funded, LIQUEFACT project, which addresses the mitigation of the risks associated with the liquefaction induced due to the seismic action, in situ geotechnical tests were performed, including microtremor measurements, in the Lisbon area in Portugal. Each measurement had an approximate duration of 40 minutes at 26 different sites, using a SYSCOM velocity sensor (MS2003+) connected to an SYSCOM acquisition unit (MR2002), considering an acquisition frequency of 400 Hz. The H/V curves at some points exhibit clear single peaks with large amplitude, which could be associated to sharp discontinuities corresponding to a profile with a single fairly homogeneous layer with a low value of the shear wave velocity contrasting a much higher value at a certain depth (\u201cseismic bedrock\u201d). The studied areas are characterized by peak frequencies ranging from 0.92 to 11.01 Hz and peak amplitudes ranging from 2.58 to 4.73. The linear equivalent model was used to assess seismic site effects, using Cross-Hole data to build the soil profile, along with strain-dependent curves from resonant column and cyclic torsional tests. The peak horizontal acceleration computed through numerical simulation was then compared with the frequency, the amplitude and the shape of HVSR curves to assess HVSR curves reliability in the prediction of seismic siteeffects.", "keywords": ["02 engineering and technology", "01 natural sciences", "0201 civil engineering", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Ramos, Andr\u00e9, Carrilho Gomes, Rui, Viana da Fonseca, Ant\u00f3nio,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.3465205"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/16th%20European%20Conference%20on%20Earthquake%20Engineering%20-%20Thessaloniki", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.3465205", "name": "item", "description": "10.5281/zenodo.3465205", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.3465205"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-01-01T00:00:00Z"}}, {"id": "10.5281/zenodo.3465229", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:24:15Z", "type": "Report", "created": "2019-10-23", "title": "3D geological model reconstruction for liquefaction hazard assessment in the Po Plain", "description": "Proceedings of the VII ICEGE 7th International Conference on Earthquake Geotechnical Engineering, Rome, Italy, 17-20 June 2019.", "keywords": ["dynamic", "550", "earthquake; site effects; topographic effect", "0211 other engineering and technologies", "600", "02 engineering and technology", "624", "laboratory tests", "name=General Earth and Planetary Sciences", "620", "site effects", " Central italy earthquake 2016", " Amatrice", "2-D numerical models", " GIS", "0201 civil engineering", "3D Geological model", " liquefaction hazard", " earthquake", " Po Plain.", "/dk/atira/pure/subjectarea/asjc/1900/1900", "name=General Environmental Science", "sandy", "/dk/atira/pure/subjectarea/asjc/2300/2300"], "contacts": [{"organization": "C. Meisina, R. Boni\u0300, M. Bordoni, C. Lai, A. Fama\u0300, F. Bozzoni, R. M. Cosentini, D. Castaldini, D. Fontana, S. Lugli, A. Ghinoi, L. Martelli, P. Severi,", "roles": ["creator"]}]}, "links": [{"href": "https://www.iris.unict.it/bitstream/20.500.11769/386431/2/ch385.pdf"}, {"href": "https://doi.org/10.5281/zenodo.3465229"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.3465229", "name": "item", "description": "10.5281/zenodo.3465229", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.3465229"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-10-22T00:00:00Z"}}, {"id": "10.5281/zenodo.3465277", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:24:15Z", "type": "Journal Article", "title": "Liquefaction demand parameters best correlated to damage on buried pipeline networks: The case study of Christchurch", "description": "Proceedings of the VII ICEGE 7th International Conference on Earthquake Geotechnical Engineering, Rome, Italy, 17-20 June 2019.", "keywords": ["0211 other engineering and technologies", "02 engineering and technology", "0201 civil engineering"], "contacts": [{"organization": "Shinde, S., Bozzoni, F., Lai, C.G., Cubrinovski, M.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.3465277"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20VII%20ICEGE%207th%20International%20Conference%20on%20Earthquake%20Geotechnical%20Engineering%2C%20Rome%2C%20Italy%2C%2017-20%20June%202019.", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.3465277", "name": "item", "description": "10.5281/zenodo.3465277", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.3465277"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"id": "10.5281/zenodo.3465439", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:24:15Z", "type": "Journal Article", "title": "PRELIMINARY DISPLACEMENT-BASED ASSESSMENT PROCEDURE FOR BUILDINGS ON LIQUEFIED SOIL", "description": "This paper provides a simple preliminary procedure for estimating the performance of a building on liquefiable soil. The procedure directly accounts for damage related to ground shaking and in-directly accounts for settlements. Additionally, it also considers the change in shaking demand and changes to the natural vibration modes of the systems due to liquefaction. The proposed procedure makes use of a displacement-based assessment procedure that considers nonlinear soil-foundation-structure interaction and extends it to include the effects of liquefaction. The extensions rely on several assumptions about the behaviour of the soil, site response and the structure, which require further research to improve the robustness of the assessment. Two small studies are conducted: one explores at what time the peak displacement of a system occurs during shaking, and the second explores the potential changes in site amplification due to liquefaction, which provide some justification to the proposed assumptions for the procedure. The procedure is applied to a six-storey two-bay case study reinforced concrete frame building to demonstrate the influence of various effects of liquefaction. For the case study building, the role of shaking damage was large and the estimated reduction in shaking demand was important to the estimated level of ductility demand, highlighting the importance of quantifying the expected site response for the assessment of building performance.", "keywords": ["Engenharia de infra-estruturas", " Engenharia civil", "Ci\u00eancias da engenharia e tecnologias::Engenharia civil", "Engineering and technology::Civil engineering", "0211 other engineering and technologies", "02 engineering and technology", "Infrastructures engineering", " Civil engineering", "0201 civil engineering"], "contacts": [{"organization": "Millen, Maxim, Viana da Fonseca, Ant\u00f3nio, Rom\u00e3o, Xavier,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.3465439"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/16th%20European%20Conference%20on%20Earthquake%20Engineering%20-%20Thessaloniki", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.3465439", "name": "item", "description": "10.5281/zenodo.3465439", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.3465439"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-01-01T00:00:00Z"}}, {"id": "20.500.11850/510230", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:26:28Z", "type": "Journal Article", "created": "2021-09-02", "title": "Multi-Axial Hybrid Fire Testing based on Dynamic Relaxation", "description": "

This technical note presents the experimental validation of a hybrid fire testing coordination algorithm recently developed by some of the authors. For the first time, the algorithm is applied to solve the static response of a multiple-degrees-of-freedom hybrid model.

", "keywords": ["Coordination algorithms", "Fire test", "Dynamic relaxation", "Computer science", "bepress|Engineering", "General Physics and Astronomy", "02 engineering and technology", "0201 civil engineering", "Control theory", "engrXiv|Engineering|Civil and Environmental Engineering", "0202 electrical engineering", " electronic engineering", " information engineering", "General Materials Science", "Safety", " Risk", " Reliability and Quality", "Partitioned time integration", "Hybrid fire testing", "engrXiv|Engineering|Civil and Environmental Engineering|Structural Engineering", "Technical note", "General Chemistry", "Experimental validation", "Hybrid fire testing; Dynamic relaxation; Partitioned time integration", "engrXiv|Engineering", "bepress|Engineering|Civil and Environmental Engineering", "Static response", "bepress|Engineering|Civil and Environmental Engineering|Structural Engineering", "Multi axial", "Hybrid model"]}, "links": [{"href": "https://doi.org/20.500.11850/510230"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Fire%20Safety%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "20.500.11850/510230", "name": "item", "description": "20.500.11850/510230", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/20.500.11850/510230"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-02T00:00:00Z"}}, {"id": "10.7712/120121.8657.19337", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:25:27Z", "type": "Journal Article", "created": "2021-09-10", "title": "STIFF DYNAMIC ABSORBERS FOR THE VERTICAL SEISMIC PROTECTION OF STRUCTURES", "keywords": ["0211 other engineering and technologies", "02 engineering and technology", "0201 civil engineering"], "contacts": [{"organization": "Marina Kalogerakou, Konstantinos Kapasakalis, Ioannis Antoniadis, Evangelos Sapountzakis,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.7712/120121.8657.19337"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%208th%20International%20Conference%20on%20Computational%20Methods%20in%20Structural%20Dynamics%20and%20Earthquake%20Engineering%20%28COMPDYN%202015%29", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.7712/120121.8657.19337", "name": "item", "description": "10.7712/120121.8657.19337", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.7712/120121.8657.19337"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-01-01T00:00:00Z"}}, {"id": "10.7712/120117.5757.17761", "type": "Feature", "geometry": null, "properties": {"license": "unspecified", "updated": "2026-06-23T16:25:27Z", "type": "Journal Article", "created": "2017-10-03", "title": "STOCHASTIC RESPONSE OF NONLINEAR BASE ISOLATION SYSTEMS", "keywords": ["02 engineering and technology", "0201 civil engineering"]}, "links": [{"href": "https://doi.org/10.7712/120117.5757.17761"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%206th%20International%20Conference%20on%20Computational%20Methods%20in%20Structural%20Dynamics%20and%20Earthquake%20Engineering%20%28COMPDYN%202015%29", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.7712/120117.5757.17761", "name": "item", "description": "10.7712/120117.5757.17761", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.7712/120117.5757.17761"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-01-01T00:00:00Z"}}, {"id": "10.7712/120217.5353.17130", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-23T16:25:27Z", "type": "Journal Article", "created": "2017-10-03", "title": "RELIABILITY PREDICTION OF FATIGUE DAMAGE ACCUMULATION ON WIND TURBINES SUPPORT STRUCTURES", "description": "Open AccessProceedings of the 2nd International Conference on Uncertainty Quantification in Computational Sciences and Engineering", "keywords": ["13. Climate action", "02 engineering and technology", "0201 civil engineering"]}, "links": [{"href": "https://doi.org/10.7712/120217.5353.17130"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%202nd%20International%20Conference%20on%20Uncertainty%20Quantification%20in%20Computational%20Sciences%20and%20Engineering%20%28UNCECOMP%202017%29", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.7712/120217.5353.17130", "name": "item", "description": "10.7712/120217.5353.17130", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.7712/120217.5353.17130"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-01-01T00:00:00Z"}}, {"id": "11572/357601", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:26:02Z", "type": "Journal Article", "created": "2022-08-09", "title": "Optimization and performance of metafoundations for seismic isolation of small modular reactors", "description": "Abstract

This paper aims to study the seismic mitigation of a typical nuclear small modular reactor (SMR) where extreme loading conditions are considered by the safe shutdown earthquake. For this purpose, to reproduce the main dynamic properties of the reactor's reinforced concrete system, a detailed structural model was synthetized, also taking into account the presence of the reactor pools. Thus, to protect the reactor from strong earthquakes, finite locally resonant multiple degrees of freedom metafoundations were developed; and resonator parameters were optimized by means of an improved frequency domain multivariate and multiobjective optimization procedure. Also, the stochastic nature of the seismic input was taken into account. It is proposed: (i) a linear metafoundation endowed with multiple cells, linear springs, and linear viscous dampers; and (ii) a foundation equipped with additional nonlinear vertical quasi\uffe2\uff80\uff90zero stiffness (QZS) cells. QZS cells were obtained by horizontally precompressed springs in an unstable state with vertical springs in parallel. With this arrangement, additional flexibility and dissipation against nonsymmetrical modes of the SMR and vertical seismic loadings are proposed. It was shown in both cases, how each metafoundation was successfully optimized via a sensitivity\uffe2\uff80\uff90based parameter grouping strategy and a hybrid grid searching algorithm. Thus, the performance of the optimized metafoundations was assessed by means of frequency and time history analyses; and finally, results were compared with an SMR endowed with both rigid foundation and conventional base\uffe2\uff80\uff90isolation solutions.In this paper, we intend to mitigate absolute accelerations and displacements in the low-frequency regime of multiple-degrees-of-freedom fuel storage tanks subjected to stochastic seismic excitations. Therefore, we propose to optimize a finite locally resonant metafoundation equipped with massive resonators and fully nonlinear hysteretic devices. The optimization process takes into account the stochastic nature of seismic records in the stationary frequency domain; the records are modelled with the power spectral density S0 and modified with a Kanai\uffe2\uff80\uff93Tajimi filter. Moreover, the massive superstructure of a fuel storage tank is also considered in the optimization procedure. To optimize the nonlinear behaviour of dampers, we use a Bouc\uffe2\uff80\uff93Wen hysteretic model; the relevant nonlinear differential equations are reduced to a system of linear equations through the stochastic equivalent linearization technique. The optimized system is successively verified against natural seismic records by means of nonlinear transient time history analyses. Finally, we determine the dispersion relations for the relevant periodic metafoundation.