（1 深圳市华阳国际工程设计股份有限公司， 上海 201100； 2 同济大学土木工程学院， 上海 200092）

［摘要］以上海某拟建项目为例，基于多遇地震作用下构件应力比基本接近、结构满足规范要求，分别对Q345，Q460，Q690三种不同强度钢材的钢框架中心支撑结构在多遇地震、罕遇地震作用下的抗震性能进行计算分析，其中Q690钢结构在1～8层采用了屈曲约束支撑（BRB）。结果表明：在多遇地震、罕遇地震作用控制的情况下，采用高强度钢材并适当布置BRB能使钢结构具有较好的抗震性能和经济性。

［关键词］高强钢；屈曲约束支撑；抗震性能；耗能性能；经济性

中图分类号：TU318，TU391文献标识码：A文章编号：1002-848X(2021)07-0073-05

Seismic performance analysis and economic evaluation of high-strength steel structure

QI Junshuai1, YANG Shujie2, CHEN Chen2, WANG Yanbo2

(1 Shenzhen CAPOL International ＆ Associates Co．， Ltd.， Shanghai 201100, China; 2 College of Civil Engineering， Tongji University， Shanghai 200092， China)

Abstract:Taking a proposed project in Shanghai as an example, based on the principle that the stress ratios of structural element  designed for frequent earthquakes were basically close and the structure meets the requirements of the code. The seismic performance of the steel frame-center support structure of three different strength steels of Q345, Q460 and Q690 was calculated and analyzed under frequent earthquake  and rare earthquake. Among them, the 1st to 8th floors of the Q690 steel structure adopted buckling restraint brace(BRB). The results show that: under the control of frequent earthquake and rare earthquake, the use of high-strength steel and the appropriate arrangement of BRB layouts can provide the steel structure with better seismic performance and economy.

Keywords:high strength steel;buckling restraint brace;seismic performance;energy dissipation performance;economy

*十三五国家重点研发计划（51408428）。

作者简介：齐军帅，学士，高级工程师，一级注册结构工程师，Email:qijunshuai@capol.cn；通信作者：王彦博，博士，助理教授，硕士生导师，Email: ybwang@tongji.edu.cn。