全钢屈曲约束支撑性能影响试验研究  

Experimental research on effect of performance of all-steel buckling-restrained brace

作　　者：张俊贤 白羽[1,2] 刘洪义 ZHANG Junxian;BAI Yu;LIU Hongyi(School of Architectural Engineering,Kunming University of Science and Technology,Kunming 650500,China;Engineering Structure Seismic Mitigation and Isolation Technique Engineering Research Center of Yunnan Province,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500 [2]云南省抗震工程技术研究中心,云南昆明650500

出　　处：《四川建筑科学研究》2021年第2期6-11,共6页Sichuan Building Science

基　　金：国家自然科学基金(51368027)。

摘　　要：设计了2根尺寸完全相同的全钢屈曲约束支撑(BRB)试件,1根试件未设无黏结层,另1根试件设无黏结层。对2根试件进行了低周往复试验,分析了无黏结层对全钢BRB破坏形式、滞回性能、等效粘滞阻尼比、拉压不平衡系数等的影响。结果表明:设无黏结层全钢BRB的疲劳性能略优于未设无黏结层全钢BRB;设无黏结层全钢BRB的拉压不平衡系数远小于未设无黏结层全钢BRB。Two all-steel buckling-restrained brace(BRB)specimens with identical dimensions were designed in the experiment and only one specimen employed the unbonding layer.The low-cycle reciprocating test was carried out on two specimens to analyze the influence of non-bonding layer on the all-steel BRB failure form,hysteretic performance,equivalent viscous damping ratio,tension and pressure imbalance coefficient,etc.The results show that the fatigue performance of the all-steel BRB with bonding layer is slightly higher than that of the all-steel BRB without bonding layer.The tension and compression imbalance coefficient of the all-steel BRB with bonding layer is much lower than that of the all-steel BRB without bonding layer.

关 键 词：全钢屈曲约束支撑 摩擦系数 无黏结层 拟静力试验 

分 类 号：TU391[建筑科学—结构工程]