A 2.5-D coupled FE–BE model for the dynamic interaction between saturated soil and longitudinally invariant structures. (February 2017)

• Record Type: Journal Article
• Authors: He, Chao; Zhou, Shunhua; Di, Honggui; Shan, Yao
• Is Part Of: Computers and geotechnics. Volume 82(2017)
• Page Start: 211
• Page End: 222
• Publication Date: 2017-02
• Subjects: Saturated soil -- Longitudinally invariant structure -- Dynamic soil–structure interaction -- Finite element–boundary element coupling -- 2.5-D modelling; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2016.10.005
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: A two-and-a-half-dimensional (2.5-D) coupled finite element–boundary element (FE–BE) model is presented to simulate the three-dimensional dynamic interaction between saturated soils and structures with longitudinally invariant geometries. A regularized 2.5-D boundary integral equation for saturated porous media is derived that avoids the evaluation of singular traction integrals. The 2.5-D coupled FE–BE model is established by using the continuity conditions on the soil–structure interface. The developed model is verified through comparison with an existing semi-analytical method. Two case studies of a tunnel embedded in a poroelastic half-space and the efficiency of a vibration isolating screen are presented.