1.湖南大学土木工程学院,湖南 长沙 410082
2.重庆大学土木工程学院,重庆 400044
贺拥军(1970—),男,教授,博导,博士。主要从事钢结构及大跨空间结构研究。E‑mail:hyj0087@163.com
收稿:2021-02-24,
修回:2021-04-23,
纸质出版:2025-08-28
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贺拥军,刘学文,周绪红.钢铅复合分级耗能屈曲约束支撑性能分析[J].防灾减灾工程学报,2025,45(04):879-887.
HE Yongjun,LIU Xuewen,ZHOU Xuhong.Performance Analysis of a Steel⁃lead Composite Buckling⁃restrained Brace with Multi⁃level Energy Dissipation[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(04):879-887.
贺拥军,刘学文,周绪红.钢铅复合分级耗能屈曲约束支撑性能分析[J].防灾减灾工程学报,2025,45(04):879-887. DOI: 10.13409/j.cnki.jdpme.20210224001.
HE Yongjun,LIU Xuewen,ZHOU Xuhong.Performance Analysis of a Steel⁃lead Composite Buckling⁃restrained Brace with Multi⁃level Energy Dissipation[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(04):879-887. DOI: 10.13409/j.cnki.jdpme.20210224001.
传统屈曲约束支撑(BRB)在多遇地震作用下通常处于弹性状态,不能耗散能量。为解决这一问题,将一字型屈曲约束支撑核心板开孔与铅芯组合,提出了一种钢铅复合分级耗能屈曲约束支撑(SLBRB)。首先介绍了SLBRB的构造与工作原理;其次采用ABAQUS有限元软件对SLBRB建模进行有限元分析;最后研究了铅芯面积、铅芯布置形式和铅芯直径与核心板开孔宽度的比值(径宽比)三个关键参数对SLBRB力学性能的影响,并给出了SLBRB各关键参数的建议值。结果表明:SLBRB的构造设计合理,铅芯与核心板能够协同工作;滞回曲线饱满,分级耗能能力良好;建议铅芯面积取值应保证
F
d
/
F
c
小于0.229;宜采用单根铅芯布置形式;径宽比取值应小于等于1。
Traditional buckling-restrained braces (BRBs) typically remain in an elastic state under frequent earthquakes and cannot dissipate energy. To address this issue
a steel-lead composite buckling-restrained brace with multi-level energy dissipation (SLBRB) was proposed by introducing holes in the core plate of an I-shaped BRB and combining them with lead cores. First
the structure and working principle of the SLBRB were introduced. Then
finite element analysis was conducted on the SLBRB using the ABAQUS software. Finally
the influence of three key parameters—lead core area
lead core arrangement
and the ratio of lead core diameter to core plate hole width (diameter-to-width ratio)—on the mechanical properties of the SLBRB was investigated
and recommended values for these parameters were provided. The results showed that the structural design of the SLBRB was rational
and the lead core and core plate could work synergistically. The hysteresis curves were full
indicating good multi-level energy dissipation capacity. It was recommended that the lead core area should ensure that the Fd/Fc was below 0.229. Additionally
a single lead core arrangement was preferred
and the diameter-to-width ratio should be less than or equal to 1.
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Zhou Y , Zhou F L , Deng X S . Experimental study on properties of lead-viscoelastic dampers [J]. World Earthquake Engineering , 1999 ( 1 ): 53 - 61 . (in Chinese)
田时雨 , 邓雪松 , 周云 , 等 . 开孔双核心钢板装配式屈曲约束支撑性能分析研究 [J]. 建筑科学 , 2019 , 35 ( 7 ): 8 - 13 .
Tian S Y , Deng X S , Zhou Y , et al . Analysis study on perforated double-core steel plate assembled buckling-restrained brace [J]. Buliding Science , 2019 , 35 ( 7 ): 8 - 13 . (in Chinese)
龚晨 . 开孔钢板装配式BRB设计方法及双向地震作用下结构中BRB平面外稳定性研究 [D]. 广州 : 广州大学 , 2018
Gong C . Design method of perforated steel plate assembled BRB and study on the out of plane stability of BRB in structures under bidirectional earthquake [D]. Guangzhou : Guangzhou University , 2018 . (in Chinese)
Seismic provisions for structural steel buildings: ANSI/AI SC341-05 [S]. Chicago, Illinois : American Institute of Steel Construction , 2010 .
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