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（西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055）

［摘要］為了對比高強(qiáng)鋼組合偏心支撐鋼框架與普通鋼偏心支撐鋼框架的抗震性能，在試驗(yàn)研究的基礎(chǔ)上，采用基于性能的抗震設(shè)計(jì)方法設(shè)計(jì)了5層、10層、15層和20層這四組算例，對四組算例分別進(jìn)行了靜力推覆分析和動力彈塑性分析。對比分析高強(qiáng)鋼組合偏心支撐鋼框架與普通鋼偏心支撐鋼框架的承載能力、抗側(cè)剛度、延性指標(biāo)以及大震作用下層間位移分布和破壞模式。結(jié)果表明：相同設(shè)計(jì)條件下高強(qiáng)鋼組合偏心支撐鋼框架與普通鋼偏心支撐鋼框架具有相近的承載能力，但抗側(cè)剛度和延性略低；基于性能的抗震設(shè)計(jì)方法能夠保證高強(qiáng)鋼組合偏心支撐鋼框架和普通鋼偏心支撐鋼框架在大震作用下產(chǎn)生相同的破壞模式和層間位移分布。高強(qiáng)鋼組合偏心支撐鋼框架可以節(jié)省約10%～15%的鋼材，具有良好的經(jīng)濟(jì)效益。

［關(guān)鍵詞］偏心支撐鋼框架； 高強(qiáng)鋼； 基于性能的抗震設(shè)計(jì)； 層間位移; 破壞模式

中圖分類號：TU391     文獻(xiàn)標(biāo)識碼：A     文章編號：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

*國家自然科學(xué)基金（51178382）。

作者簡介：李慎,博士研究生,Email:lishen2861@163.com。

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