全装配式RC楼盖板缝节点抗震性能试验研究  

Experimental study on seismic behavior of slab connections in untopped precast RC floor diaphragms

作　　者：庞瑞[1,2] 梁书亭[1] 朱筱俊[3] 

机构地区：[1]东南大学土木工程学院,江苏南京210096 [2]河南工业大学土木建筑学院,河南郑州450001 [3]东南大学建筑设计研究院,江苏南京210096

出　　处：《建筑结构学报》2012年第10期59-66,共8页Journal of Building Structures

基　　金：国家自然科学基金项目(51208181);教育部博士点专项科研基金项目(20060286043);江苏省"六大人才高峰"项目(1105000150);国家"十二五"科技支撑计划项目(2011BAJ10B03);河南工业大学高层次人才基金项目(2012BS008)

摘　　要：为研究新型全预制装配式混凝土楼盖板缝连接节点的抗震性能,设计了5种形式的板缝节点,进行了平面内低周反复荷载下的足尺模型试验,对板缝节点的开裂模式、破坏形态、滞回曲线、位移延性、刚度退化和耗能能力进行了较为系统的研究。结果表明:在5种板缝节点中,发卡式节点、盖板式节点和发卡-盖板混合式节点滞回曲线饱满、延性好,具有较好的抗震性能,是理想的板缝连接节点;上下匹配布置预埋机械连接件的板缝节点平面内受剪承载力可以由叠加法进行简化计算。An experimental program consisting of prototype tests of selected slab connections was conducted to evaluate the seismic behavior of the proposed slab connections used in new-type precast concrete floor diaphragms. Performance of the test specimens was evaluated in terms of crack and failure mode, hysteretic curves, ductility, stiffness degradation and energy dissipation capacity, etc. The test results reveal that the hysteretic curves of hairpin connection （HPC）, cover plate connection （CPC） and hybrid connection combined with hairpin connector and cover plate connector （HP-CPC） are plump and show good energy dissipation and seismic performance. The in-plane shear bearing capacity of the new-type connection consisting of coupled mechanical connectors in both side of the slab can be predicted in a simple superposition method.

关 键 词：全装配式楼盖 板缝节点 拟静力试验 抗震性能 

分 类 号：TU375.2[建筑科学—结构工程] TU317.1