可修复钢制屈曲约束支撑力学性能试验与数值模拟研究  

EXPERIMENTAL AND NUMERICAL STUDIES OF AN ALL-STEEL REPAIRABLE BUCKLING-RESTRAINED BRACE

作　　者：熊琛 吴迪晟 管民生[2] 刘尤森 杜宏彪[2] XIONG Chen;WU Di-sheng;GUAN Min-sheng;LIU You-sen;DU Hong-biao(Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering,Shenzhen University,Shenzhen,Guangdong 518060,China;College of Civil and Transportation Engineering,Shenzhen University,Shenzhen,Guangdong 518060,China)

机构地区：[1]深圳大学广东省滨海土木工程耐久性重点实验室,广东深圳518060 [2]深圳大学土木与交通工程学院,广东深圳518060

出　　处：《工程力学》2024年第6期145-153,共9页Engineering Mechanics

基　　金：中国地震局工程力学研究所基本科研业务费专项项目(2020EEEVL0412);国家自然科学基金重大项目(52090082)。

摘　　要：提出了一种可修复钢制屈曲约束支撑(RBRB),该支撑可通过核心板的局部替换实现支撑修复。RBRB各部件采用螺栓连接,无须拆除屈曲约束盖板即可实现核心板修复替换,修复过程简单。设计了两种不同核心板宽度的RBRB试件,并开展低周往复加载试验,讨论了其滞回性能、失效模式以及累计塑性变形能力。试验结果表明RBRB滞回曲线较为饱满,具有稳定的滞回性能与良好的累计塑性变形能力。RBRB试件在核心板修复后滞回性能与修复替换前保持一致,表明其可修复性较好。对试件开展了数值模拟研究,并与试验结果进行对比,结果显示数值模拟的破坏形式及滞回曲线与试验结果吻合良好。An all-steel repairable buckling-restrained brace(RBRB)was proposed to facilitate rapid repair of BRB by replacing the core plate.Different parts of the RBRB are connected through bolted connections and the core plate can be replaced without opening the steel encasing.This paper discussed the hysteresis performance,failure mode and cumulative plastic deformation capacity of the RBRB,and two RBRB specimens with different core widths were tested by conducting low-cycle reversal loading tests.The results show that the RBRB exhibits good ductility and cumulative plastic deformation capacity.The RBRB specimens show similar hysteretic performance before and after the replacement of a core plate.Numerical studies were conducted for all specimens,and the simulated failure mode and hysteretic curves agree well with the test results.

关 键 词：屈曲约束支撑 可修复 拟静力试验 滞回性能 有限元分析 

分 类 号：TU352.11[建筑科学—结构工程]