【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。更多还原

【Abstract】 In order to investigate the seismic behavior of ultra thin-walled cold-formed C steel wall-beam joint,3full 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 × 1specimen,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.更多还原