门式刚架梁柱端板斜放螺栓连接节点抗震性能试验研究

为了研究门式刚架梁柱端板斜放螺栓连接的抗侧移承载力以及端板厚度和高强螺栓强度等级对于此类节点抗震性能的影响,设计了3个1/2比例门式刚架节点试件进行低周反复水平加载试验,获得了节点的荷载-位移滞回曲线、骨架曲线和破坏特征等。试验结果表明:试件的梁比柱受力不利,试件破坏主要发生在梁上翼缘靠近节点区域部位;试件的荷载-位移滞回曲线比较丰满,说明节点的耗能能力较强,具有良好的抗震性能。

Experimental Study On Seismic Behavior of Inclined Bolted End-plate Connections in Portal Frame

Three specimens in 1/2 scale of the prototype model were tested under low-cyclic reversed loading to study the lateral resisting ability of inclined bolted end-plate connections in portal frame in order to study the effect of the end-plate thickness and high strength bolts strength on the seismic performance of such joints.The load-displacement hysteresis curves,skeleton curves and failure mode of the specimens are obtained from the experimental results.Test results show that specimen damage at the top flange of the beam near joint panel zone is worse than at the column,and the load-displacement hysteresis curves are plump.This indicates that the specimens have good energy-absorbing capacity and excellent anti-seismic behavior.