Theoretical model and experimental verification of variable friction self-centering energy dissipative brace

被引：0
作者：
Zhu, Lihua [1 ]
Liu, Tong [1 ]
Dong, Yaorong [1 ]
Luo, Jinwu [1 ]
Li, Zijie [1 ]
机构：
[1] Xi’an University of Architecture & Technology, Xi’an
来源：
Tumu Gongcheng Xuebao/China Civil Engineering Journal | 2025年 / 58卷 / 03期
关键词：
friction energy dissipation; hysteresis performance; restoring force model; seismic performance; self-centering brace;
D O I：
10.15951/j.tmgcxb.23090750
中图分类号：
学科分类号：
摘要：
Aiming at developing structure with recoverable functions, a novel variable friction self-centering energy dissipative brace with simplicity in processing and convenience in assembly is proposed. The detailed configuration and working mechanism of the brace were introduced, and the theoretical prediction model of the restoring force was established. The feasibility of the detailed design of the new brace was verified by a cyclic test, and its hysteretic curve, characteristic load, characteristic stiffness and energy dissipative capacity were analyzed. The results show that the load-displacement curves of the new system equipped with spring and wedge block exhibit typical flag-shaped hysteretic behavior, and the characteristics of the curves are affected by key parameters such as spring precompressed length, spring stiffness, number of wedge blocks, etc. After cyclic loading, there is no residual deformation in the brace, indicating that it has good self-centering capacity and stable working performance. The deformation capacity, energy dissipative capacity, and self-centering capacity of brace can be changed by adjusting the parameters of the spring and the wedge block. The calculated results of theoretical formula are in good agreement with the experimental results of the brace, and the research can be referred to by future projects. © 2025 Chinese Society of Civil Engineering. All rights reserved.
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页码：1 / 11
页数：10
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