摘要
为了研究装配式钢管混凝土柱-钢梁节点的抗震性能,在综述前人研究成果基础上,采用归一化方法比较了五种装配式钢管混凝土柱-钢梁节点的荷载比-位移比曲线、滞回环面积比-位移比曲线,对节点承载力、耗能性能、刚度退化等指标进行分析,探讨了装配式钢管混凝土柱-钢梁节点的抗震性能,并对节点的施工难易及成本进行对比分析。结果表明:节点构造形式对节点的抗震性能有一定的影响。在小轴压比条件下,加强环式和内隔板式节点抗震性能更好,加强环式节点可通过设置外肋端板提高变形能力;从施工难易程度来看,加强环式和外肋环板式节点难度较其他节点更低;外肋环板式节点的单位极限承载力成本最低。总结的装配式节点形式为相同前提条件下的装配式钢管混凝土柱-钢梁节点的选择提供了参考,其他条件下的节点性能尚需进一步研究。
In order to study the seismic performance of the assembled steel tube concrete column-steel beam joints.Based on the review of previous research results,the load ratio-displacement ratio curve,hysteresis loop area ratio-displacement ratio curve of five assembled steel tube concrete column-steel beam joints were compared using normalization method,and bearing capacity of node,energy dissipation performance and stiffness degradation index were analyzed.The seismic performance of the assembled steel tube concrete column-steel beam joint was discussed.The construction difficulty and the cost of the joint were also compared and analyzed.The results show that the structural form of the joints has a certain influence on the seismic performance of the joints.Under the condition of small axial compression ratio,the seismic performance of the reinforced ring and inner baffle joints is better,and the reinforced ring joints can improve the deformation capacity by setting external rib end plates.In terms of construction difficulty,the difficulty of reinforced ring and outer rib ring plate joints is lower than that of other joints.The unit ultimate bearing capacity cost of outer rib ring plate joint is the lowest.The assembled joints summarized provide reference for the selection of assembly steel tube concrete column-steel beam joints under the same condition,the joint performance under other conditions needs further study.
作者
张孝斌
殷尧日
冯力强
刘立平
牛昌林
李英民
ZHANG Xiaobin;YIN Yaori;FENG Liqiang;LIU Liping;NIU Changlin;LI Yingmin(Gansu Construction Investment(Holdings)Group Corporation,Lanzhou 730000,China;School of Civil Engineering,Chongqing University,Chongqing 400045,China;Gansu Jiantou Technology Research and Development Co.,Ltd.,Lanzhou 730000,China)
出处
《建筑结构》
CSCD
北大核心
2021年第5期75-79,共5页
Building Structure
基金
国家自然科学基金项目(51638002)
住房和城乡建设部研究开发项目(2018-K9-072)。
关键词
装配式钢结构
钢管混凝土柱-钢梁
归一化方法
小轴压比
抗震性能
节点比选
assembled steel structure
steel tube concrete column-steel beam
normalization method
small axial compression ratio
seismic performance
joint comparison
