Abstract

A method is proposed to approximately compute the seismic response of shallow three-dimensional (3D) alluvial valleys. It is based on the exact solution for a simple configuration. Namely, the antiplane response of a rectangular deposit with a moving rigid base. In such a solution, which is used as a framework for our approximations, the spectral signature of locally generated surface waves is explicit. Thus, an approximate expression is constructed to separately account for one-dimensional (1D) response and lateral effects. Results are presented for two- and three-dimensional cases. Comparisons are provided with rigorous solutions as well. Our formulas allow for fast computations.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.