Seismic performance of RC frame structures with buckling-restrained brace subjected to near-fault pulse-like ground motions

被引：0
|
作者：
Bai J. [1 ,2 ]
Cheng F. [2 ]
Jin S. [3 ]
Pan Y. [4 ]
Zhao J. [5 ]
机构：
[1] Key Laboratory of New Technology for Construction of Cities in Mountain Area of China Ministry of Education, Chongqing University, Chongqing
[2] School of Civil Engineering, Chongqing University, Chongqing
[3] School of Civil Engineering, Chongqing Jiaotong University, Chongqing
[4] School of Civil Engineering, Southwest Jiaotong University, Chengdu
[5] School of Civil Engineering and Transportation, South China University of Technology, Guangzhou
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2018年 / 39卷
关键词：
Buckling-restrained braced; Forward-directivity effect; Near-fault pulse ground motions; Reinforced concrete frame structure; Seismic performance;
D O I：
10.14006/j.jzjgxb.2018.S1.014
中图分类号：
学科分类号：
摘要：
The destruction of structures subjected to near-fault pulse-type ground motions with forward-directivity effect and fling-step effect has been widely concerned by the engineering community. In order to understand the seismic behavior of the RC frame with buckling-restrained brace subjected to near-fault pulse-type ground motions, the seismic design of three V-shaped braced structures was first carried out using a plastic design method based on energy balance. Three types of 36 near-fault ground motions with forward-directivity effect pulse, fling-step effect and non-pulse types were selected, and the nonlinear dynamic analyses of the structure subjected to large earthquake were performed. The maximum values of inter-story drift ratio, roof acceleration, and roof displacement of the structure were obtained. Axial performance of BRB of the structure was studied. Detailed analysis and evaluation of the seismic response of the structure subjected to three typical ground motions were carried out. The results show that near-fault pulse-type grounds motion produces greater seismic response to the structure than non-pulse type ground motion, and the response is significantly concentrated on the speed pulse timing; at the same time, BRB can fully use its energy dissipation characteristics and improve the seismic performance of structural system. © 2018, Editorial Office of Journal of Building Structures. All right reserved.
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页码：103 / 110
页数：7
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