Seismic Response of Semi-sine Shaped Hill and Valley with Consideration of Dynamic Behaviour of Cohesionless Soils

摘要

In this study, the seismic response of semi-sine shaped hill and valley is subjected to scrutiny in the time domain using Ricker incident wave in the context of the Finite Difference Method. The soil is simulated using the Mohr-Coulomb (MC) failure criterion and the hysteretic damping model. A range of shape factors is elaborated to examine the effect of topography shape and geometry on the seismic response. The role of different reference strain factors is scrutinized. The effect of geometric properties, soil stiffness and damping onto the seismic ground response is explored. The significance of the enumerated factors is discussed, and a set of criterion for the common engineering applications is proposed. It is observed that an increase of shape factor leads in the occurrence of greater maximum displacements at the crest of hills, and smaller maximum displacements at the centre of valleys.