Shaking table comparative test and associated study of a stepped wall-frame structure

查看全文 作　　者：Xu [1]Weixiao;Sun [1]Jingjiang;Yang [1]Weisong;Du [1]Ke

机构地区：[1]Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics, China Earthquake Administration

出　　处：《Earthquake Engineering and Engineering Vibration》索引2014年第13卷第3期,共15页

基　　金：Special Fund for Earthquake Research under Grant No.201208013;National key Technology R&D Program under Grant No.2012BAK15B05;Basic Research Fund of Institute of Engineering Mechanics,CEA under Grant No.2010A04 摘　　要：A new structural system c alled a stepped wall-frame structure is proposed in this study to solve the bottom yielding problem of RC frames, which widely occurred during previous earthquakes such as the Wenchuan and Yushu earthquakes in China. A 1/5 scale ordinary RC frame model and a stepped wall-frame model were subjected to shake table motions together to study the seismic behavior of the new structural system. This paper presents the dynamic characteristics, the seismic responses and the failure and collapse mechanism of the two models under low, moderate and high intensity shaking. The test results and further analysis demonstrate that the seismic performance of stepped wall-frame structures is superior to ordinary RC frames in terms of the well-controlled deformation pattern and more uniformly distributed damage. The stepped wall can effectively suppress the bottom yielding mechanism, and is simple, economical and practical for engineering practice. 关键词：钢筋混凝土框架结构对比试验阶梯式振动台普通钢筋混凝土墙抗震性能地震反应

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Shaking table comparative test and associated study of a stepped wall-frame structure

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