连体位置及刚度变化对双塔楼地震响应的影响

Influence of gallery position and rigidity variation on seismic response of connected tall building of twin tower

双塔楼连体结构中的连接体使得原来彼此独立的单体变成了整体,结构的动力特性和抗震性能发生了很大变化。文章建立一对称双塔楼连体结构的空间模型,然后通过变化连体的位置和刚度,并用有限元分析软件SAP2000进行地震反应的线性时程分析,研究连体对结构的基本自振周期、顶层位移、基底剪力的影响,最后比较分析结果得出连体最优的位置及刚度。

The gallery in the connected tall building of twin tower makes the separated buildings become one. Consequently the dynamic characteristics and earthquake resistant behavior of the structure change a lot. A 3D model of symmetrical structure of connected tall building of twin tower is set up in this paper, and a linear time-history seismic analysis of the frame is made by changing the gallery position and rigidity with the finite element analysis software SAP2000. The best position and rigidity of the gallery are found out through the analysis of the influence of the gallery on the frame＇s basic natural period of vibration, top displacement and bottom shear force.