连接体位置变化对大底盘双塔结构的抗震影响

Seismic Effect of Connection Position Change on Double-tower Structures with Large Chassis

运用Sap2000有限元软件,建立了3个大底盘双塔连体结构模型,研究连接体位置变化对双塔结构动力特性及抗震性能的影响.对3个模型进行模态分析、反应谱分析和时程分析,分别得出其自振周期、楼层最大位移和层间位移角,比较分析最优的连接体位置.结果表明:连接体设置在楼层中部偏上位置时,结构抗震性能最好.

In this paper,three double-tower structure models with large chassis are set up by Sap2000 finite element software.The influence of the position change of the connecting body on the dynamic characteristics and seismic performance of the double tower structure is studied.The three models of modal analysis,response spectrum analysis and time history analysis are carried out to obtain the natural vibration period,maximum floor displacement and inter-floor displacement angle respectively,and to compare and analyze the optimal position of the connecting body.The results show that the seismic performance of the structure is the best when the connector is located on the upper middle of the floor.