OPENAIRE OpenAire Sygma Bielefeld Academic Search Engine (BASE) e-Prints Soton UnpayWall Crossref Microsoft Academic Graph European Union Open Data Portal https://eprints.soton.ac.uk/442810/1/Woodman_et_al_revised_June20PURE.pdf https://doi.org/10.1016/j.compgeo.2020.103754 Computers and Geotechnics Open Access 2020-08-11 Abstract In this paper a new model for the hydro-mechanical behaviour of rooted soils is developed. It is a physically-based model that couples finite strain soil deformation with unsaturated water and air flow, while improving on existing cohesion-based approaches to mechanical root reinforcement and empirical soil water-uptake approaches typically used to deal with rooted slopes. The model is used to show that the dynamics of soil-water pressure and soil deformation depend strongly on the physics of the root-water uptake and the elasto-plastic soil mechanics. Root water uptake can cause suctions and corresponding soil shrinkage sufficiently large to necessitate a finite-strain approach. Although this deformation can change the intrinsic permeability, hydraulic conductivity remains dominated by the water content. The model incorporates simultaneous air-flow, but this is shown to be unimportant for soil-water dynamics under the conditions assumed in example simulations. The mechanical action of roots is incorporated via a root stress tensor and a simulation is used to show how root tension is mobilised within a swelling soil. The developed model may be used to simulate both laboratory experiments and full-scale vegetated slopes. /dk/atira/pure/subjectarea/asjc/1900/1909 name=Geotechnical Engineering and Engineering Geology /dk/atira/pure/subjectarea/asjc/1700/1706 550 Vegetated soil 0211 other engineering and technologies Large-strain 04 agricultural and veterinary sciences 02 engineering and technology name=Computer Science Applications 15. Life on land Roots 510 Slope Landslide 0401 agriculture, forestry, and fisheries Woodman, Nicholas, Smethurst, Joel, Roose, Tiina, Powrie, William, Meijer, G., Knappett, J., Dias, T., 2020-11-01 journalpaper Abstract In this paper a new model for the hydro-mechanical behaviour of rooted soils is developed. It is a physically-based model that couples finite strain soil deformation with unsaturated water and air flow, while improving on existing cohesion-based approaches to mechanical root reinforcement and empirical soil water-uptake approaches typically used to deal with rooted slopes. The model is used to show that the dynamics of soil-water pressure and soil deformation depend strongly on the physics of the root-water uptake and the elasto-plastic soil mechanics. Root water uptake can cause suctions and corresponding soil shrinkage sufficiently large to necessitate a finite-strain approach. Although this deformation can change the intrinsic permeability, hydraulic conductivity remains dominated by the water content. The model incorporates simultaneous air-flow, but this is shown to be unimportant for soil-water dynamics under the conditions assumed in example simulations. The mechanical action of roots is incorporated via a root stress tensor and a simulation is used to show how root tension is mobilised within a swelling soil. The developed model may be used to simulate both laboratory experiments and full-scale vegetated slopes. Mathematical and computational modelling of vegetated soil incorporating hydraulically-driven finite strain deformation 10.1016/j.compgeo.2020.103754 646809