外伸式端板连接蜂窝钢梁-混凝土柱组合节点抗震性能试验研究  

Experimental study on seismic behavior of honeycombed steel beam-concrete column composite joint with extended end-plate connections

作　　者：李升才[1] 黄小燕[1] 

机构地区：[1]华侨大学土木工程学院,福建厦门361021

出　　处：《建筑结构学报》2013年第11期91-97,共7页Journal of Building Structures

基　　金：国家自然科学基金项目(50948036);福建省科技计划重点项目(2012H0028);福建省自然科学基金计划项目(2013J01192)

摘　　要：通过7个1∶2比例外伸式端板连接蜂窝钢梁-混凝土柱组合节点的低周反复加载试验,研究不同螺栓数目、直径及排列方式的外伸式端板连接蜂窝钢梁-混凝土柱组合节点在各受力阶段的抗震性能和合理的节点构造形式。基于试验数据,分析了节点在反复荷载作用下的破坏形态、滞回曲线、骨架曲线、刚度退化、延性和耗能性能等。试验结果表明:试件的破坏形态和变形与螺栓数目、直径及排列方式有关,外伸端板螺栓连接中螺栓数目多、直径大的节点连接形式的承载力高,抗震性能较好;8个端板螺栓4行2列的排列形式为最合理的抗震节点形式;外伸端板螺栓数量为8个时的延性和耗能性能都能满足抗震的要求。Cyclic loading tests were carried out on seven half scale extended end-plate connecting honeycombed steel beam-concrete column composite joints. The key test parameters were number, diameter and arrangement of connecting bolts. The seismic behavior and reasonable form of joint details of honeycombed steel beam-concrete column composite joint with different number, diameter and arrangement of connecting bolts were investigated. Based on the test data, the seismic behavior of the tested honeycombed steel beam-concrete column composite joint was evaluated in terms of failure modes, hysteretic curves, skeleton curves, stiffness degradation, ductility and energy-dissipation capacity etc. The test results show that the number, diameter and arrangement of connecting bolts have great effect on the failure mode and deformation of specimens, the extended end-plate bolt connections with more bolt numbers and larger bolt diameters have higher bearing capacity and better seismic behavior; the extended end-plate connecting honeycombed steel beam-concrete column composite joint with eight bolts arranged in four rows and two columns are the most reasonable joints form ; the ductility and energy-dissipation capacity of the extended end-plate connecting honeycombed steel beam-concrete column composite joint with eight bolts can meet the requirement of seismic performance.

关 键 词：外伸式端板 蜂窝钢梁 混凝土柱组合节点 连接螺栓 拟静力试验 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程]