摘要
为了对比采用端板与顶底角钢连接节点的部分包裹混凝土组合柱(partially encased composite column,即PEC柱)-钢梁框架的抗震性能,设计了四榀不同构造形式梁柱节点的平面框架,分别进行了低周往复加载,对各试件的破坏模式、滞回曲线、承载力、刚度、耗能及延性等抗震性能进行了对比。结果表明:平面框架下,部分包裹混凝土组合柱-钢梁端板及顶底角钢节点均为半刚性节点;4个框架均体现出良好的滞回性能,承载力退化稳定;端板厚度对框架及节点刚度影响明显;角钢厚度对框架承载力及耗能能力影响显著;端板节点框架的抗震性能优于顶底角钢节点。
In this paper, the comparative test analysis on seismic behaviors of PEC column-steel beam frames with end plates and top-seat angles connections are conducted under low cyclic load. There are four kinds of different forms about beam-column joints, two of them are end plates connections and the other two are top-seat angles nodes. The failure modes, hysteretic performance, capacity, stiffness, energy dissipation and ductility properties are compared. The experiments show that all the frames have good hysteretic property and stable degradation bearing capacity. The thickness of the end plate makes a great influence on stiffness of the frame joints and the angles＇ thickness affects bearing capacity and energy dissipation significantly. To sum up, the seismic performance of end plate joints frame is better than that of top-seat angle nodes ones.
出处
《工程抗震与加固改造》
北大核心
2015年第5期28-34,共7页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金资助项目(51268042)
