土-桩-钢结构相互作用体系的振动台模型试验  

Shaking table model test of soil-pile-steel structure interaction system

作　　者：楼梦麟[1] 宗刚[1] 牛伟星[1] 陈根达[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《地震工程与工程振动》2006年第5期226-230,共5页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(50278070);教育部重点实验室访问学者项目

摘　　要：本项试验是研究土-结构相互作用对结构TLD减震控制影响的系列振动台模型试验的组成部分,主要目的是提供相应的对比试验数据。在这组试验中,突出的问题是TLD、上部被控结构和土层三个子系统模型基频间的协调。为了尽可能降低土层模型基频,文中采用了一种具有低剪切波速特性的土层模拟介质。最后,通过土-桩-钢结构系统的振动台模型试验,研究了土-结构相互作用对钢结构动力特性和地震反应的影响。The aim of the model test of the soil-pile foundation-steel structure system, that is one of the shaking table model test series for studying the effects of soil-structure interaction （SSI） on TLD＇s performance to suppress the seismic responses of the structures, is to obtain the experimental data for comparison with the model test of the soil- pile foundation-steel structure-TLD system. The difficulty in the series tests is to keep the coordination among the fundamental frequencies of three subsystems of the superstructure, TLD and soil layer. For reducing the fundamen- tal frequency of the soil layer as low as possible, a mixed model material with low shear wave velocity is developed and suggested to simulate the soil medium. Finally, the SSI effects on the dynamic characteristics and the seismic responses of the structures are discussed through the model test of the soil-pile foundation-steel structure system.

关 键 词：土-结构相互作用 土层模拟介质 钢结构 振动台模型试验 

分 类 号：P315.973[天文地球—地震学]