A numerical hydro-geotechnical model for marine gravity structures. (October 2016)

• Record Type: Journal Article
• Authors: Elsafti, H.; Oumeraci, H.
• Is Part Of: Computers and geotechnics. Volume 79(2016)
• Page Start: 105
• Page End: 129
• Publication Date: 2016-10
• Subjects: Marine gravity structures -- Marine gravity foundations -- Porous media -- Cyclic mobility -- Residual pore pressure -- Soil-structure interaction; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2016.05.025
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: A new finite-volume solver named " geotechFoam " is developed within OpenFOAM® 1 for modelling soil-structure-interaction for marine gravity structures. The fully-coupled and fully-dynamic Biot's governing equations are solved in a segregated approach. Two simplifications of the governing equations are introduced and tested. The spatial domain is composed of several zones with different material properties and/or constitutive models. A multi-yield surface plasticity model is implemented to simulate soil response under cyclic loads. Moreover, soil-structure interaction is modelled via a frictional contact model and boundary conditions accounting for skeleton-pore fluid coupling. Five benchmark cases and two sets of physical model tests are applied for the validation.