双塔连体结构弹塑性时程分析  

Elasto-plastic time history analysis of a double-tower connected structure

作　　者：吴晓涵[1] 韦晓栋[1] 钱江[1] 吕西林[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《地震工程与工程振动》2011年第3期51-58,共8页Earthquake Engineering and Engineering Dynamics

基　　金：国家重点基础研究发展计划973项目(2007CB714202);国家自然科学基金项目(51021140006)

摘　　要：双塔连体结构是我国实际工程中应用越来越多的一种结构形式。该结构形式是在两塔楼顶部设置连体部分的新型建筑结构形式。本文针对某一连体结构,采用NosaCAD有限元软件建立整体结构分析模型。通过建立模型,分析结构在7度多遇和罕遇地震下的弹塑性时程反应,得到结构在地震作用下的变形、内力和破坏情况的变化过程。结果表明,小震情况下,结构构件未出现损坏。大震情况下,结构最大层间位移角满足1/100的限值要求,结构框架柱未出现破坏,部分剪力墙底部边缘出现少量局部破坏,结构构件损坏顺序和分布较为合理,能在一定程度上耗散地震输入能量。结构可以满足小震不坏大震不倒的设防要求。最后根据构件的受力及损坏情况,给出了设计改进建议。As a new structure system,the double-tower connected structure（DTCS） is applied more and more widely in China.In this paper,in order to study the seismic behavior of the structure under frequent and rare earthquakes with intensity 7,the model of DTCS is built with NosaCAD.Based on the analysis,the deformations,internal forces and damage patterns of the structure are investigated.The study results show that under the frequent earthquakes,there is no damaged element.Under the rare earthquakes,the maximum inter-story drifts are less than that of the requirements of the Chinese seismic design code.There is no damage in the columns and few shear walls are damaged at the edge of bottom.The order and distribution of damage in the components of the tubes are reasonable,which can dissipate some dynamic energy.Finally,according to internal forces and load-carrying capacity or damage state of the elements,some suggestions for improving the seismic design are put forward.

关 键 词：双塔连体结构 弹塑性时程分析 钢筋混凝土 抗震性能 

分 类 号：TU973.14[建筑科学—结构工程] TU311.41