Seismic soil–structure interaction of massive flexible strip-foundations embedded in layered soils by hybrid BEM–FEM |
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Authors: | C C Spyrakos Chaojin Xu |
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Institution: | a Laboratory of Earthquake Engineering, Department of Civil Engineering, National Technical University of Athens, Polytechnic Campus Zografos, Athens 15700, Greece;b Algor Inc., 150 Beta Drive, Pittsburgh, PA 15238, USA |
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Abstract: | A study on the seismic response of massive flexible strip-foundations embedded in layered soils and subjected to seismic excitation is presented. Emphasis is placed on the investigation of the system response with the aid of a boundary element–finite element formulation proper for the treatment of such soil–structure interaction problems. In the formulation, the boundary element method (BEM) is employed to overcome the difficulties that arise from modeling the infinite soil domain, and the finite element method (FEM) is applied to model the embedded massive flexible strip-foundation. The numerical solution for the soil–foundation system is obtained by coupling the FEM with the BEM through compatibility and equilibrium conditions at the soil–foundation and soil layer interfaces. A parametric study is conducted to investigate the effects of foundation stiffness and embedment on the seismic response. |
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Keywords: | Flexible strip-foundations Soil– structure interaction Seismic response Boundary element method Finite element method |
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