波纹钢板组合框架节点抗震性能试验研究  

Seismic performance test research on composite frame joint using corrugated steel plates

作　　者：邹昀[1] 缪嘉炜 王城泉[1] 时建新 陈明 吴艺超 ZOU Yun;MIAO Jiawei;WANG Chengquan;SHI Jianxin;CHEN Ming;WU Yichao(School of Environment 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,无锡214122 [2]上海欧本钢结构有限公司,上海200127

出　　处：《建筑结构》2023年第5期136-140,118,共6页Building Structure

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);2016年江苏省建筑产业现代化示范基地项目。

摘　　要：基于波纹钢-钢管混凝土组合柱与U形外包波纹钢-混凝土组合梁,以“强节点弱构件”的设计原则提出了一种施工便捷、传力明确的节点连接方式。对中节点试件进行了低周往复加载下的拟静力试验,分析了节点的破坏形态、滞回曲线、耗能能力、延性、梁端塑性铰区以及节点核心区关键部位钢材的应变变化,通过有限元软件对节点进行模拟,并与试验进行对比发现二者吻合较好。研究表明:试件最终破坏的位置为梁端理想塑性铰区,节点核心区域未发生明显破坏,实现了塑性铰的外移;试件滞回曲线饱满,等效黏滞阻尼系数为0.206,延性系数为3.67,说明试件具有较好的耗能能力以及延性。节点域钢材各位置应变分布均匀,传力效果良好,节点核心区未屈服,梁下翼缘塑性铰区应变达到屈服应变,节点工作性能良好,能有效传递弯矩以及剪力。Based on the corrugated steel-tubular composite column infilled with concrete and reinforced concrete beam with U shape corrugated steel webs developed,a connection method with convenient construction and clear force transmission was proposed based on the design principle of"strong joints and weak components".A pseudo-static test under low-cycle reciprocating loading of the middle joint specimen was carried out,the failure form,hysteresis curve,energy dissipation capacity,ductility,plastic hinge area of the beam end and the strain change of the key parts of the core area of the joints were analyzed.Numerical simulation for joint was carried out through finite element software,which is consistent with the experimental phenomenon.The research results show that the final failure position of the specimen is the plastic hinge area at the beam end,the core area of the joint has no obvious damage,the plastic hinge is moved outward;the hysteresis curve of the specimen is full,and the equivalent viscous damping coefficient of the specimen is 0.206 and the ductility coefficient is 3.67,which show that the specimen has good energy consumption and ductility.The steel strains in the joint area are evenly distributed in various positions,and the force transmission effect is good.The core area of the joint is not yielded,and the strain of the lower flange of the plastic hinge area of the beam end reaches the yield strain.The joint work performance is good,and the bending moment and shear force can be effectively transmitted.

关 键 词：波纹钢-钢管混凝土组合柱 U形外包波纹钢-混凝土组合梁 节点抗震性能 拟静力试验 

分 类 号：TU398[建筑科学—结构工程]