EXPERIMENTAL STUDY ON THE MECHANICAL PROPERTY OF IN-PLANE PRE-ARCHING SEISMIC DAMAGE-CONTROL FUSES FOR BEAM-TO-COLUMN CONNECTIONS

被引：0
|
作者：
Li H. [1 ,2 ]
Zhang L.-X. [1 ,2 ]
Lin X.-C. [1 ,2 ]
Zhu B.-J. [1 ,2 ]
Xie X.-X. [1 ,2 ]
机构：
[1] Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Heilongjiang, Harbin
[2] Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Heilongjiang, Harbin
来源：
Gongcheng Lixue/Engineering Mechanics | 2024年 / 41卷 / 06期
关键词：
damage identification; damage-control fuses; mechanical property; pre-arching; pseudo-static tests;
D O I：
10.6052/j.issn.1000-4750.2022.05.0449
中图分类号：
学科分类号：
摘要：
Improvement of the structural seismic resilience is fundamental to city resilience construction. It is important to improve the seismic resilience level of structures based on developing structural seismic damage-control elements with functions, including damage-free, damage identification and replaceability. Based on previous study on conventional flat-plate fuses, an innovative pre-arching fuse is proposed to control the damage of beam-to-column joints through in-plane pre-arching mechanism. The configuration and working mechanism of pre-arching fuses were described. Six sets of pre-arching fuses with different pre-arching conditions and slenderness ratios were designed, and the mechanical mechanism and seismic performance were studied by pseudo-static tests. The test results show that the pre-arching fuses exhibited more stable compressive strength and full hysteresis loops than the flat-plate fuses. The strength degraded more slowly for pre-arching fuses with smaller slenderness ratio and larger pre-arching height. When the compressive rotation of split pier exceeded about 0.07 rad, the strength of pre-arching fuses decreased, which can be suggested as a criterion for replacement. A mechanical model was proposed to estimate the yielding and maximum strength of the pre-arching fuses. © 2024 Tsinghua University. All rights reserved.
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页码：55 / 65
页数：10
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