Mechanical behavior and experimental investigation of self-centering dampers with high strength steel friction ring springs

被引：0
|
作者：
Zhao Y. [1 ,2 ]
Wang W. [1 ,2 ]
Fang C. [1 ,2 ]
机构：
[1] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai
[2] Department of Structural Engineering, Tongji University, Shanghai
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2020年 / 41卷 / 11期
关键词：
Friction ring spring; Hysteretic test; Resilience structure; Self-centering damper; Self-centering performance;
D O I：
10.14006/j.jzjgxb.2019.0375
中图分类号：
学科分类号：
摘要：
The resilience structure is regarded as the future development trend of earthquake engineering. Based on the resilience structure, a self-centering seismic damper based on high-strength steel ring spring which absorbing energy by friction was proposed. The working principle and detailed design of the damper were discussed. The seismic performance of the damper under multiple sequence earthquakes was investigated by low-cycle hysteretic loading test. The test results show that the self-centering seismic damper with high-strength steel ring spring can adjust the deformation capacity, which have excellent self-centering performance. The damper has stable hysteresis performance and good seismic recoverability after multiple earthquakes. The treatment process of ring spring tapered friction surface has influence on the self-centering performance and energy dissipation capacity of the damper. When the friction coefficient increases, the self-centering performance is reduced, but the energy consumption is increased. The damper stiffness prediction of the theoretical formula proposed in this paper agrees well with the experimental results, which can provide reference for engineering design. © 2020, Editorial Office of Journal of Building Structures. All right reserved.
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页码：108 / 115and142
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