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

作     者：Xu Weixiao Sun Jingjiang Yang Weisong Du Ke 

作者机构：Key Laboratory of Earthquake Engineering and Engineering VibrationInstitute of Engineering Mechanics China Earthquake Administration 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2014年第13卷第3期

页      面：471-485页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

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 

主　　题：stepped wall-flame strt, cture damage mechanism control shake table test drift ratio collapse mechanism 

摘      要：A new structural system called 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 thc Wcnchuan 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 tbr engineering practice.