Site Effects in Finite Geological Region Due to Wavepath Inhomogeneity

Abstract

The time-harmonic response of a multilayered soil deposit resting on the elastic half-plane under the influence of incoming pressure and shear waves is numerically investigated by a hybrid boundary integral equation-plane wave decomposition method in this chapter. The multilayered deposit is finite-sized, with non-parallel layers and contains free-surface relief, while the half-plane into which it is embedded is elastic, isotropic, and inhomogeneous. In other words, it is considered the seismic interaction between discretely inhomogeneous inclusion and continuously inhomogeneous half-plane. These studies are useful within the context of earthquake engineering and the design of infrastructure in seismically prone regions. The complexity of these problems necessitates the use of hybrid computational techniques , where the BIEM accounts for the vast bulk of the geological medium surrounding the near site region.