Dynamic response of flexible strip-foundations by boundary and finite elements |
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Authors: | C C Spyrakos |
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Institution: | 1. Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan;2. Department of Geomatics, National Cheng Kung University, Tainan, Taiwan;3. Geographic Information System Research Center, Feng Chia University, Taichung, Taiwan |
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Abstract: | A time domain Boundary Element-Finite method is employed to determine the dynamic response of flexible surface two-dimensional foundations under conditions of plane strain placed on an elastic soil medium and subjected either to transient external forces or to obliquely incident seismic waves. The elastic, isotropic, and homogeneous soil medium is treated by the time domain Direct Boundary Element Method, while the flexible foundation is treated by the Finite Element Method. The two methods are appropriately combined through equilibrium and compatibility considerations at the soil-foundation interface. Parametric studies examining the effect of the relative stiffness between the foundation and the soil and the spatial distribution of the dynamic disturbances on the foundation response are presented. |
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