带摩擦保护装置自复位屈曲约束支撑框架的减震效果分析

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Abstract The introduction of a friction fuse (FS) at the end of the self-centering buckling-restrained brace (SC-BRB) to form the SC-BRB-FS can effectively avoid the fracture of pretensioned tendons caused by excessive structural deformation, as well as the problem of sharp drop in brace bearing capacity and a significant increase in residual deformation. Based on the code, 4-story and 8-story SC-BRB steel braced frames were designed, and the analysis models of the ordinary SC-BRB frame that can consider the fracture of tendons and the SC-BRB frame with friction fuse were established, respectively, according to the test results of the brace. The influence of the friction fuse on the seismic performance of the SC-BRB frames is determined by nonlinear dynamic analyses. The results show that the installation of a friction fuse at the ends of the SC-BRB can not only reduce the damage and collapse probability of the structure, but also reduce the structural residual deformation; increasing the activation deformation of the friction fuse will not affect the maximum displacement response of the structure, but can further reduce the residual deformation of the structure.
Key words: self-centering；friction fuse；braced frame；seismic performance

Key words： self-centering friction fuse braced frame seismic performance

Received: 29 December 2020 Published: 15 July 2022

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	Articles by authors
	DUAN Li1
	2
	XIE Qin1
	3
	LI Xia2
	ZHOU Zhen4

Cite this article:

DUAN Li1,2,XIE Qin1, et al. Aseismic effect analysis of self-resetting buckling-restrained braced frame with friction fuse[J]. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(13): 89-95.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2022/V41/I13/89

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