装配式钢筋混凝土梁梁钢端板拼接节点抗震性能试验研究  

Experimental study on seismic behavior of steel end-plate splice nodes of fabricated reinforced concrete beams

作　　者：吴东平[1] 姜远航 李成玉[1] WU Dongping;JIANG Yuanhang;LI Chengyu(School of Urban Construction,Wuhan University of Science and Technology,Wuhan 430065,China)

机构地区：[1]武汉科技大学城市与建设学院,湖北武汉430065

出　　处：《四川建筑科学研究》2024年第5期1-9,共9页Sichuan Building Science

基　　金：国家自然科学基金项目(51878522)。

摘　　要：为进一步提高大跨度装配式混凝土框架的现场装配效率,提出了一种新型干式装配式混凝土框架节点。通过梁梁钢端板连接形成可承力框架结构,从而实现逐跨和立体交叉装配施工。按照1∶3的缩尺比例制备了3个预制试件和1个现浇试件,并进行了低周反复荷载试验,研究分析了该节点的变形过程、破坏形态,以及端板厚度、钢套筒宽度对节点承载力、延性及耗能能力的影响。试验结果表明:该节点具有较强的刚度,能够较好地提高梁整体的承载力和抗震性能。To further improve the on-site assembly efficiency of large-span prefabricated concrete frames,a new type of dry prefabricated concrete frame node was proposed,which formed a load-bearing frame structure through beam end plate connection,thereby achieving span by span and three-dimensional cross assembly construction.Three prefabricated specimens and one cast-in-place specimen were prepared in a 1∶3 scale ratio and subjected to low cycle repeated load tests.The deformation process,failure mode,and influence of end plate thickness and steel sleeve width on bearing capacity,ductility and energy dissipation capacity of the node were studied and analyzed.The experimental results show that the node has strong stiffness and can effectively improve the overall bearing capacity and seismic performance of the beam.

关 键 词：装配式节点 抗震性能 破坏模式 

分 类 号：TU375[建筑科学—结构工程]