王增春，  何艳丽，  陈务军
(上海交通大学，上海200030)

[摘要] 有别于传统TMD，本文提出的内部子结构调谐质量阻尼器(iTMD)是一种利用建筑自身的某一独立单元（内部子结构）作为质量块通过弹簧、阻尼器和橡胶支座等媒介与主体结构相互作用而形成的一种新的减震耗能系统。iTMD的优点是不增加结构的自重的情况下，通过调整子结构的自振频率，使其尽量接近主结构的基本频率或激振频率，使主结构在受到地震激励时振动反应衰减而受到控制。通过计算获得相应减震参数和合理布置iTMD系统，将iTMD减震技术应用于上海证大五道口广场商业建筑的减震设计中，分别进行的弹塑性静力推覆( Pushover)分析和弹塑性动力时程分析，分析结果表明iTMD系统的安装，能够较好地减少地震效应，具有简单、高效、经济等优点。
[关键词] 调谐质量阻尼器；地震；推覆分析；时程分析法
中图分类号：TU313    文献标识码：A  文章编号：1002-848X(2012) S2-0189-05

Pushover and elastic-plastic seismic analysis of structure with iTMD system
Wang Zengchun, He Yanli, Chen Wujun
( Shanghai Jiaotong University, Shanghai 200030, China)

Abstract: Different from the traditional TMD, innersubstructure tuned mass damper(iTMD)is a new technology of using an independent unit of main structure( innersubstructure)as a massconnected to main structure through springs, dampers and rubber bearings and other media, and the interaction ofiTMD and main structure form a new shockabsorption system.  iTMD has the advantage of not increasing the weight of the structure, through the adjustment of structure natural vibration frequency, making it as close as possible to the main structure of the basic frequency and excitation frequency, so that the main structures subjected to seismic excitation vibration response attenuation under control. By calculating the corresponding damping parameters and reasonable arrangement of iTMD system, the iTMD system was applied in the seismic design of Shanghai Zendai Wudaokou Plaza Commercial Building. The elasto-plastic Pushover analysis and elasto-plastic time-history analysis results show that the installation of iTMD system used to reduce the seismic effect holds simple, efficient, economic and other advantages.
Keywords: TMD; earthquake; Pushover; dynamic time-history analysis method