高烈度区复杂高层钢框架中心支撑结构性能化设计研究  

Research on performance-based seismic design of complex high-rise steel concentrically braced frame located in high seismic intensity region

作　　者：李雨航 李爱群 黄镇[3] 曾德民[1,2] 解琳琳 Li Yuhang;Li Aiqun;Huang Zhen;Zeng Demin;Xie Linlin(Beijing Advanced Innovation Center for Future Urban Design,Beijing 100044,China;School of Civil &Transportation Engineering,Beijing University of Civil Engineering and Architecture, Beijing 100044,China;School of Civil Engineering,Southeast University,Nanjing 210096,China)

机构地区：[1]北京未来城市设计高精尖创新中心,北京100044 [2]北京建筑大学土木与交通工程学院,北京100044 [3]东南大学土木工程学院,南京210096

出　　处：《建筑结构》2019年第1期18-24,共7页Building Structure

基　　金：国家自然科学基金重点项目(51438002)

摘　　要：针对高烈度区复杂高层钢框架中心支撑结构的抗震性能化设计进行了研究。首先,基于PERFORM-3D对采用传统抗震设计方法设计的方案进行性能化评估。为进一步提高结构抗震性能,进行了应用金属剪切型阻尼器的减震设计,并对阻尼器关键参数和沿高度布置位置的优化选择进行了分析。结果表明,采用金属剪切型阻尼器能有效控制高层结构地震响应,在大震下减少塑性铰尤其是柱塑性铰的数量,提升整体结构的抗震性能。同时,阻尼器优化布设可以在减震效果基本不变的情况下,使经济性得到一定程度提升。研究成果可为复杂高层钢框架中心支撑结构的设计研究提供参考。Performance-based seismic design of special high-rise steel concentrically braced frame located in high seismic intensity region was studied.Firstly,the performance evaluation of the scheme designed by the traditional seismic design method was carried out based on PERFORM-3D.In order to further improve the seismic performance of the structure,the damping design using metal shear damper was carried out,and the key parameters of the damper and the optimal selection of the position along the height were analyzed.The results show that the metal shear damper can effectively control the seismic response of high-rise structures,and it can help reduce the number of plastic hinges,especially column plastic hinges under rare earthquake to improve the seismic performance of the overall structure.At the same time,the optimized layout of the damper can improve the economy to a certain extent under the condition that the damping effect is basically unchanged.The research results can provide reference for the design and research of the complex high-rise steel concentrically braced frame.

关 键 词：复杂高层钢框架中心支撑结构 高烈度区 PERFORM-3D 抗震性能化设计 金属剪切型阻尼器 

分 类 号：TU393.2[建筑科学—结构工程]