Numerical Analysis of Layered Soil-Ash-Foundation System

Abstract

As earthquake events are unpredictable, necessity of seismic response analysis of ground has become important these days. In this study, nonlinear 1D-ground response analysis of a layered soil-ash system has been performed using Cyclic1D software. Cyclic1D is based on nonlinear finite element principle for one-dimensional (1D) horizontal seismic site-response analysis. In addition, behavior of a shallow foundation placed on the layered soil-ash system has been analyzed using two-dimensional numerical analysis software CyclicTP. The seismic analysis of the layered soil-ash and soil-ash-foundation system has been performed considering the seismic excitation of Uttarkashi earthquake input motion (Mw-6.5). The results of the numerical analysis are demonstrated in the form of acceleration response, displacement response, and excess pore pressure variation for both 1D and 2D analysis. The results of the present studies may be of help in seismic design of foundation constructed with soil-ash deposit to minimize the disposal problem. © 2022, Springer Nature Singapore Pte Ltd.