外加强环式与内隔板式方钢管混凝土柱-钢梁框架抗震性能比较  

Seismic Behavior Comparison on Concrete-filled Square Tubular Column-steel Beam Frame Joint Between Stiffer Ring and Interior Diaphragms

作　　者：倪铁权[1,2] 袁文祺[1] 许成祥[3] 

机构地区：[1]长江大学城市建设学院,荆州434023 [2]长江大学结构工程与防灾研究所,荆州434023 [3]武汉科技大学城市建设学院,武汉430065

出　　处：《武汉理工大学学报》2016年第1期44-48,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51178057);湖北省高等学校优秀中青年科技创新团队计划(T201303)

摘　　要：为了对比外加强环式与内隔板式方钢管混凝土柱-钢梁连接框架结构的抗震性能,设计并制作了1榀3层2跨外加强环式连接的方钢管混凝土柱-钢梁框架,对其进行了低周反复加载试验,与内隔板式连接的方钢管混凝土柱-钢梁框架抗震试验成果进行比较。分析两种节点连接方式下试件的滞洄曲线、骨架曲线、延性和耗能能力、强度退化和刚度退化。结果表明:两种节点连接方式下试件的滞回曲线饱满,延性系数均大于4,满足抗震要求;外加强环式连接的试件极限承载力要明显高于内隔板式连接试件;外加强环式连接的试件具有更好的弹塑性变形能力及耗能能力,抗震性能整体优于内隔板式连接试件。In order to compare the seismic behaviors of concrete-filled square tubular（CFST）frame between stifferring joints and interior diaphragms joints,a trial of two-bay and three-story frame with stiffer ring joints under low cyclic reversed loading was conducted.Based on the experimental data,the hysteretic curves,skeleton curves,ductility and dissipative ability,strength and stiffness degradation,etc,were analyzed.The experimental results show that two joints obtain plump hysteresis curve and all ductility factors are bigger than 4,which can meet the seismic requirements.CFST with stiffer ring has better performances than inner diaphragms in ultimate bearing capacity,nonlinear distortion capability and energy dissipation capacity.The data of ultimate load,ultimate displacement,ductility factor and energy dissipation capacity show that two joints both have good performance,but the seismic behavior of CFST with stiffer ring is better.

关 键 词：方钢管混凝土框架 外加强环 内隔板 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程]