摘要
对3个冷弯超薄壁C型钢组合墙体与组合楼盖连接的墙梁节点足尺试件进行拟静力试验,讨论不同墙架柱截面、不同轴压比对墙梁节点承载力、耗能能力的影响,得到了各节点的破坏特征、承载力特征值、延性和耗能系数。结果表明:墙架柱截面对冷弯超薄壁C型钢墙梁节点的抗震性能影响较大,C160mm×40mm×10mm×1mm截面试件的承载力是C89mm×44.5mm×12mm×1mm截面试件的1.5倍,延性系数约1.1倍。轴压比对冷弯超薄壁C型钢墙梁节点的抗震性能影响明显,0.4的轴压比下C160mm×40mm×10mm×1mm截面试件的承载力是0.2的轴压比时的2/3,延性系数约1/2。
In order to investigate the seismic behavior of ultra thin-walled cold-formed C steel wall-beam joint, 3 full scale specimens are tested under low-cycle lateral loading. Factors that influence the seismic behavior of ultra thin-walled cold-formed C steel wall-beam joint, including stud-sectional size, axial compression ratio, are studied, and the failure mechanism, bearing capacity, ductility and energy dissipation coefficient of specimens are obtained. Experimental results show that the stud-sectional size greatly influences the seismic behavior of the wall-beam joint. The bearing capacity of the C160×40 ×10×1 specimen is about 1.5 times as that of the C89×44.5 ×12 ×1 specimen, and the ductility coefficient is 1.1 times by comparison. Axial compression ratio also exerts significant influence, in that the bearing capacity of the specimen under axial compression ratio of 0.4 is 2/3 times as that of the the specimen under axial compression ratio of 0. 2, and the ductility coefficient is 0.5 times.
出处
《建筑科学》
CSCD
北大核心
2015年第3期73-77,共5页
Building Science
基金
四川省科技创新苗子工程资助项目(20132085)
关键词
超薄壁
墙梁节点
抗震性能
试验研究
ultra thin-walled
Wall-beam joint
seismic performance
experimental study
