土-桩-钢结构-TLD系统振动台模型试验研究  

Study on shaking table model test of soil-pile-steel structure-TLD 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6期172-177,共6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资助项目

摘　　要：通过系列振动台模型试验,研究土-结构相互作用对结构TLD减震控制影响。文中首先提出试验模型设计中应考虑的几个主要问题及解决方法,然后介绍土-桩基础-钢结构-TLD相互作用体系的试验成果,分析TLD的减震效果,最后与刚性地基上钢结构TLD减震试验结果相比较,揭示土-结构相互作用对TLD减震效率的影响特点。试验结果表明:土-结构相互作用使得TLD减震效率降低,这一削减作用受到输入地震动的频谱特性和强度的影响。因此,对于建在土层场地上的结构进行TLD减震设计时,应充分重视工程场地条件和地震动特性等实际情况。The effects of soil-structure interaction （SSI） on TLD＇s performance to suppress the seismic responses of structures are studied by a series of shaking table model tests. First, several important problems considered in test model design and solving techniques are presented in this paper. Then the results of the shaking table model test for the soil-pile foundation-steel structure-TLD interaction system are introduced and the TLD efficiencies to reduce the seismic responses of the structure are analyzed. Finally, effecting features of SSI on the TLD performance are discussed by comparing with the results of the shaking table model test for the steel structure-TLD system. In the last test, the steel structure is assumed to be built on the rigid foundation. The comparison between the test results shows that the TLD efficiencies to reduce the seismic responses of the structure decrease when the SSI effect is considered. The frequency feature and the intensity of the input seismic motion have important influence on this reduction. Therefore, the real conditions of the construction site and input seismic motion should be considered in the TLD design when the controlled structure is built on the soil site.

关 键 词：土-结构相互作用 TLD减震控制 钢结构 振动台模型试验 

分 类 号：P315.973[天文地球—地震学]