土—基础—结构共同作用体系的“平—扭”地震响应分析

本文对土—基础—非对称结构共同作用体系在斜入射 SH 地震波作用下的复杂问题进行了研究。主要分析了斜入射波的入射角和非对称结构的偏心距等引起结构扭转响应因素对共同作用体系频响特性和时域特性的影响。

THE TORSIONAL RESPONSE OF SOIL-BASEMENT STRUCTURE SYSTEM

This paper studies the complex problem of soil-basement asymmetricstructure system subjected to the oblique incident SH seismic waves.Itmainly analyses the factors of structural torsional response,which areinduced by the oblique incident angle and the eccentricity of the asymme-tric structure,and their influence on the frequency response and the timedomain feature of the system.The result showes that the response tothe non-vertical incident waves is obviously different from that to thevertical incident waves which are usually assumed.The torsional responsecaused by non-vertical incident waves is as important as that by the eccen-tricity of the structure itself.