Nonlinear Seismic Response of an Alluvial Basin Modelled by Spectral Element Method: Implementation of a Davidenkov Constitutive Model.

Autor: Ba, Zhenning, Zhao, Jingxuan, Sang, Qiaozhi, Liang, Jianwen
Předmět:
Zdroj: Journal of Earthquake Engineering; Dec2024, Vol. 28 Issue 16, p4767-4796, 30p
Abstrakt: A subroutine incorporating soil nonlinearity is presented using SPECFEM3D Cartesian, an open-access Spectral Element Method (SEM)-based code for full waveform simulation. Specifically, the adaptive time-stepping scheme is developed in the time marching algorithm, enabling the computation to be effective. The verification of the method is first demonstrated via comparison with results calculated by DEEPSOIL. Then, applications for a trapezoid basin are implemented to study the effects of impedance ratio (IR), magnitude, and basin shape on ground motion. Finally, we focus on the nonlinear ground motion simulation of the Shidian basin in southwestern China and compare it with the linear results. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index