装配式框架核心筒墙梁节点滞回性能试验研究

Hysteretic Behavior Test and Analysis of Prefabricated Frame Core Wall-beam Joints

为研究预制装配式框架核心筒墙梁平面外连接节点的抗震性能,在配筋率相同的条件下,设计了1个现浇试件和2个不同连接形式的装配式试件。研究了在梁端施加低周往复荷载的条件下不同的连接形式对装配式试件耗能能力、刚度、延性及极限抗弯承载力的影响。试验研究表明,装配式试件具有与现浇试件相当的刚度及极限抗弯承载力。装配式试件的开裂荷载﹑屈服荷载和延性高于现浇试件。现浇试件的抗震耗能能力要好于装配式试件。

To study seismic analysis of non-planar prefabricated frame core wall-beam joints,under conditions of the same reinforcement ratio,one cast wall-beam connecting node and two different forms of prefabricated wallbeam connecting nodes are designed. The influence of energy dissipation capacity,stiffness,ductility and ultimate bending bearing capacity of assembly specimen with different connection forms under the low cyclic loading at the beam end is studied. The experiments show that compared with cast specimen,prefabricated specimens have equivalent stiffness and ultimate flexural capacity. The cracking load,yield load and ductility of prefabricated specimens are higher than that of cast-in-place specimen. The seismic energy dissipation ability of cast specimen is better than that of assembled specimens.