自密实方圆钢管混凝土四肢格构柱拟静力试验对比研究  

Self-compacting Concrete Filled Square Steel Tubes Limb Lattice Column Quasi Static Test Research

作　　者：曹艳[1] 陈伯望[2] 贺冉[3] 何美丽[3] 

机构地区：[1]湖南科技大学土木工程学院,湘潭411201 [2]中南林业科技大学土木工程学院,长沙410004 [3]湖南城市学院土木工程学院,益阳413000

出　　处：《湖南工程学院学报（自然科学版）》2014年第1期77-81,共5页Journal of Hunan Institute of Engineering(Natural Science Edition)

基　　金：湖南省教育厅科研资助项目(10A017)

摘　　要：通过对2个自密实方钢管混凝土格构柱模型和1个自密实圆钢管混凝土格构柱模型在恒定竖向荷载作用下的水平低周反复试验,研究了试件在低周反复水平荷载作用下的破坏形态和抗震性能,给出了试件在反复荷载作用下的滞回曲线和延性系数.试验结果表明,3个自密实钢管混凝土格构柱构件的破坏形态基本一致,表现为最终缀管与柱肢连接处的柱肢被撕裂,说明缀管与肢柱的焊接连接处是构件的薄弱位置;滞回分析表明,圆钢管混凝土格构柱比方钢管混凝土格构柱具有更高的抗震能力.By means of two lattice column model of self-compacting concrete filled square steel tubes and 1 self-compacting concrete round steel tube lattice column model under vertical load at a constant level low cyclic test, analyze them under low reversed cyclic horizontal load performance and skeleton curve, ductili- ty displacement change with repeated loading hysteresis curve is given. Test results show that the three self-compacting concrete filled steel tube lattice column component failure pattern, appearance is finally compose tube and column limb gradually torn limb joints, these areas are located in compose pipe welding joint with limb column, that these parts are the weak areas of artifacts. By the whole loading process to get the three components of the hysteresis curve indicates that the round steel tube concrete lattice column for concrete-filled steel tube lattice column has higher bearing capacity.

关 键 词：自密实混凝土 四肢格构柱 低周反复 滞回性能 延性 

分 类 号：TU398.7[建筑科学—结构工程]