（西安建筑科技大学土木工程学院， 西安 710055）

［摘要］为了对比高强钢组合偏心支撑钢框架与普通钢偏心支撑钢框架的抗震性能，在试验研究的基础上，采用基于性能的抗震设计方法设计了5层、10层、15层和20层这四组算例，对四组算例分别进行了静力推覆分析和动力弹塑性分析。对比分析高强钢组合偏心支撑钢框架与普通钢偏心支撑钢框架的承载能力、抗侧刚度、延性指标以及大震作用下层间位移分布和破坏模式。结果表明：相同设计条件下高强钢组合偏心支撑钢框架与普通钢偏心支撑钢框架具有相近的承载能力，但抗侧刚度和延性略低；基于性能的抗震设计方法能够保证高强钢组合偏心支撑钢框架和普通钢偏心支撑钢框架在大震作用下产生相同的破坏模式和层间位移分布。高强钢组合偏心支撑钢框架可以节省约10%～15%的钢材，具有良好的经济效益。

［关键词］偏心支撑钢框架； 高强钢； 基于性能的抗震设计； 层间位移; 破坏模式

中图分类号：TU391     文献标识码：A     文章编号：1002-848X(2015)06-0071-09

Seismic behavior study of Ktyped eccentricially braced steel frames with high

strength steel combination based on performance design method

Li Shen, Su Mingzhou, Lian Ming

 (School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China)

Abstract:In order to compare seismic performances between eccentrically braced steel frames with high strength steel （HSSEBFs） and eccentrically braced steel frames(EBFs) on the basis of experimental study, four groups of both HSSEBFs and EBFs were designed by performancebased seismic design (PBSD) method, which include 5story, 10story, 15story and 20story projects. Nonlinear Pushover analysis and nonlinear dynamic analysis were conducted to all designs. The bearing capacity, lateral stiffness, ductility index and interstory drift and failure mode under the rare earthquake between HSS\|EBFs and EBFs were compared. The results indicate that HSSEBF has similar bearing capacity with EBF while the lateral stiffness and ductility of HSSEBF are lower than that of EBF. HSSEBF and EBF designed by PBSD method have the same failure mode and interstory drift distribution under the rare earthquake. The steel weight of HSSEBF is 10%~15% lower than  of EBF, resulting in good economic efficiency.

Keywords:eccentrically braced steel frame (EBF); high strength steel; performancebased seismic design; interstory drift; failure mode

*国家自然科学基金（51178382）。

作者简介：李慎,博士研究生,Email:lishen2861@163.com。

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