外包波纹钢-混凝土组合梁与波纹钢-钢管混凝土柱节点抗震性能研究  

Study on seismic behaviours of corrugated steel web-encased concrete composite beam to corrugated plate-square concrete filled steel tubular column joint

作　　者：时建新 邹昀[1] 王城泉[1] 周杭飞 吴艺超 陈明 SHI Jianxin;ZOU Yun;WANG Chengquan;ZHOU Hangfei;WU Yichao;CHEN Ming(School of Environmental and Civil Engineering,Jiangnan University,Wuxi 214122,China;Shanghai Open steel Structure Co.,Ltd.,Shanghai 200127,China)

机构地区：[1]江南大学环境与土木工程学院,江苏无锡214122 [2]上海欧本钢结构有限公司,上海200127

出　　处：《实验力学》2021年第3期367-377,共11页Journal of Experimental Mechanics

基　　金：2018年江苏省科技厅社会发展面上项目(BE2018625);江苏省自然科学基金资助项目(BK20180623);国家自然科学基金课题(51378240);2015年江苏省建筑节能与建筑产业现代化科技支撑项目;2016年江苏省建筑产业现代化示范基地项目。

摘　　要：基于课题组研发的外包波纹钢-混凝土组合梁与波纹钢-钢管混凝土柱,本文提出一种组合结构的节点形式,并进行了该类节点试件的低周往复荷载试验。对节点的破坏模态、滞回曲线、骨架曲线、耗能、延性、节点核心区应变进行了分析,对该类节点变形组分及变化规律进行了研究,结果表明:试件最终为梁端塑性角区弯曲破坏,延性系数为2.45,等效黏滞阻尼系数为0.4,层间位移主要由梁塑性变形引起,梁塑性变形引起的层间位移占比61.5%。进一步利用ABAQUS对试件的梁柱线刚度比、轴压比等参数进行数值分析,结果表明:当梁柱线刚度比由0.75增大到0.81时,节点的承载能力以及耗能能力均有提高,节点的破坏模态由梁端弯曲破坏逐步向节点剪切破坏过渡,而轴压比对节点抗震性能影响较小。Based on the steel-concrete composite beam with corrugated steel webs and corrugated steel-concrete steel tubular column developed by the research group,a new joint form of the composite structure is proposed,and the low-cycle reversed load tests on the nodal specimens are conducted.The failure modes,the hysteresis curve,the skeleton curve,the energy dissipation,the ductility,and the strain in the core area of the joint are analyzed.In addition,the deformation components and the variations of this type of joint are studied.The results show that the specimen finally bends at the plastic corner zone of the beam end.The ductility coefficient is 2.45 and the equivalent viscous damping coefficient is 0.4.The inter layer displacement is mainly caused by the plastic deformation of the beam,which accounts for 61.5%.Furthermore,the beam-column stiffness ratio and the axial compression ratio of the specimen are numerically analyzed by the ABAQUS software.The analysis results show that when the beam-to-column stiffness ratio increases from 0.75 to 0.81,the bearing capacity and the energy dissipation capacity of the joint are improved,and the failure mode of the joint gradually changes from the bending failure of the beam end to the joint shear failure.In contrast,the impact of axial compression ratio on the seismic performance of the joint is relatively small.

关 键 词：外包波纹钢-混凝土组合梁 波纹钢-钢管混凝土柱 节点 抗震性能 变形组成 梁柱线刚度比 

分 类 号：TU398[建筑科学—结构工程]