耗能梁段连接构造对偏心支撑钢框架抗震性能的影响  

Influence of the Connection Structure of Energy Dissipating Beam Section on the Seismic Performance of Eccentrically Braced Steel Frame

作　　者：叶重阳 王新武[2] 时强[2,3] 孙海粟[2] YE Chongyang;WANG Xinwu;SHI Qiang;SUN Haisu(School of Civil Engineering,Henan University of Science and Technology,Luoyang 471023,China;Henan International Joint Laboratory of New Civil Engineering Structure,Luoyang Institute of Science and Technology,Luoyang 471023,China;School of Natural Science,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]河南科技大学土木工程学院,河南洛阳471023 [2]河南省新型土木工程结构国际联合实验室,洛阳理工学院,河南洛阳471023 [3]武汉理工大学理学院,武汉430070

出　　处：《工业建筑》2023年第8期58-64,205,共8页Industrial Construction

基　　金：国家自然科学基金项目(51678284);中原科技创新领军人才(214200510002);河南省高校科技创新团队(21IRTSTHN010);河南省科技厅科技攻关(212102310969);河南省高等学校重点科研项目(21B560010);河南省高校青年骨干教师培养计划(2020GGJS244);洛阳理工学院预研项目(2019YZ10)。

摘　　要：为研究装配式偏心支撑钢框架在地震作用下的抗震性能与破坏机理,对两个一榀一层单跨的装配式偏心支撑钢框架进行拟静力试验,研究耗能梁段连接构造对装配式偏心支撑钢框架抗震性能的影响,观察钢框架在低周往复荷载作用下的破坏特征,结合试验结果深入分析此类结构的滞回曲线、骨架曲线、刚度退化、耗能性能、延性系数等抗震性能指标。试验结果表明:此类装配式偏心支撑钢框架抗震性能良好,耗能梁段连接构造对装配式偏心支撑钢框架有重要影响,在主体框架连接形式不变的情况下,框架耗能梁段采用外伸端板连接的试件,其承载能力和耗能能力均高于耗能梁段采用平齐端板连接的试件;两框架的破坏现象均出现在耗能梁段,主体框架未见明显变形,满足建筑抗震设防要求。In order to understand the seismic performance and failure mechanism of the prefabricated eccentrically braced steel frame under earthquake action,a quasi-static test was conducted on a one-storey single-span prefabricated eccentrically braced steel frame.The effect of the connection structure of energy dissipating beam section on the seismic performance of prefabricated eccentrically braced steel frames was studied.The failure characteristics of the steel frame under quasi-static load were observed,and combined the test results to deeply analyze the seismic performance indicators such as hysteresis curve,skeleton curve,stiffness degradation,energy dissipation performance,ductility coefficient of this type of structure.The test results showed that this type of prefabricated eccentrically braced steel frame had good seismic performance,and the connection structure of the energy dissipating beam section had an important influence on the prefabricated eccentrically braced steel frame.When the main frame connection form remained unchanged,the frame energy dissipating beam sections connected by extended end plates,the bearing capacity and energy dissipation capacity of the specimen connected by extended end plate were higher than the specimen connected by flush end plates;the failure of the two frames appearred in the energy dissipating beam section,and there was no obvious deformation on the main frame which could meet the seismic fortification requirements of buildings.

关 键 词：装配式 偏心支撑 抗震性能 拟静力试验 耗能梁段 

分 类 号：TU352.11[建筑科学—结构工程] TU391