错层框架结构节点垂直加腋抗震性能分析

Seismic Performance Analysis of Staggered Floor Frame Structure with Vertical Haunch Connections

首先针对错层框架结构造成的平面不规则结构,以某一错层框架结构工程为研究对象,对结构进行了反应谱和弹性时程分析,弹性时程分析时,结构最大层间位移角超过规范限值。其次通过对框架结构错层节点处采取垂直加腋措施,对比分析了普通错层框架结构和节点垂直加腋错层框架结构的自振周期、最大楼层位移和层间位移角等,垂直加腋错层框架结构最大层间位移角满足规范要求。结果表明:采取框架结构错层处垂直加腋的加强措施,可有效减小最大楼层位移与层间位移角,改善结构的抗震性能,为类似工程提供参考。

Taking one staggered floor frame structure of the irregular plane structure as research object,the response spectrum and elastic time history analysis of the structure were carried out,the maximum displacement angle exceeded the specification limit during the elastic time history analysis.Themeasure of vertical haunch was taken at the staggered joints of the frame structure,the natural vibration period,maximum displacement and displacement angle of the common staggered frame structure and the staggered floor frame structure with vertical haunch connections were compared and analyzed.The maximum displacement angle of the staggered floor frame structure with vertical haunch connections satisfied the specification requirements.The results show that the measure of vertical haunch could effectively reduce the maximum floor displacement and displacement angle,improve the seismic performance of the structure,and provide reference for similar projects.