朱  鸣，  王春磊，  张  徐
    （北京市建筑设计研究院，北京 100045）

[摘要] 弱连体结构通过弱连接节点将各单体连为一个整体结构，弱连接节点可以采用摩擦摆支座或铅芯橡胶支座等。为研究弱连体结构的受力特点，结合某弱连体结构，分别建立了整体模型和各单体的独立模型，进行小震作用下的时程分析。针对各单体的基底剪力、顶点位移、典型墙肢内力与典型框架柱内力等指标，比较两种模型的峰值结果，同时对比了结构顶点位移与加速度时程响应曲线。结果表明，弱连接连廊对主楼影响较小，可以采用单塔的反应谱分析结果作为主要构件的设计依据。
[关键词] 弱连体结构；隔震支座；时程分析；整体模型；单体模型
中图分类号：TU398.9  文献标识码：A  文章编号：1002-848X(2011) Sl-0195-05

Comparison of time-history analysis between whole model and single model of weakly-connected structure
    Zhu Ming, Wang Chunlei, Zhang Xu
    ( Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract: Weakly-connected structure is a structure composed of single towers joined with weak-connection joints. Weak-connection joints can realized using LRB( Lead Rubber Bearing)  or FPB( Friction Pendulum Bearing) ,etc. To research the characteristics of weakly-connected structure, based on a real structure of this type, whole model and single model were built separately, and time-history analysis under frequently occurred earthquake was carried out. In terms of basement shear force, displacement at top, interior force of typical walls and interior force of typical columns, peak values of the two models were compared. Time-history response curve of displacement and acceleration at top were also compared. The results showed that the weakly-connected gallery had insignificant influence on main tower, thus the results of response spectrum analysis can be used for most members of main tower.
Keywords: weakly-connected structure; isolation bearings; time-lustory analysis; whole model; single model