新型箍筋装配式混凝土梁柱节点抗震性能研究  

Research on Seismic Performance of Prefabricated Concrete Beam-to-Column Joints with New Stirrups

作　　者：裘煜 邹小舟 罗运海 李丽娟[2] 武念铎 王小平 熊哲[2] 谢龙盼 QIU Yu;ZOU Xiaozhou;LUO Yunhai;LI Lijuan;WU Nianduo;WANG Xiaoping;XIONG Zhe;XIE Longpan(Guangdong Xiangshun Construction Group Co.,Ltd.,Yunfu 527400,China;School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou 510006,China;China Construction Eighth Engineering Division Co.,Ltd.,Shanghai 200122,China)

机构地区：[1]广东翔顺建设集团有限公司,广东云浮527400 [2]广东工业大学土木与交通工程学院,广州510006 [3]中国建筑第八工程局有限公司,上海200122

出　　处：《工业建筑》2022年第12期72-79,148,共9页Industrial Construction

基　　金：国家自然科学基金项目(12032009、12002091);广东省企业科技特派员专项(GDKTP2021004500)。

摘　　要：针对一笔箍筋和多螺旋箍筋(简称“新型箍筋”)优异的约束效果,提出新型箍筋增强装配式混凝土梁柱节点。按照节点强弱、类型和施工方法以及箍筋形式的不同,共设计6个足尺混凝土梁柱节点试件。依据低周往复荷载试验结果,对节点的破坏形态、滞回曲线、骨架曲线、延性、耗能能力、强度退化、刚度退化和节点转角进行讨论。结果表明:强节点试件发生梁端弯曲破坏,弱节点组试件发生节点剪切破坏;新型箍筋装配式梁柱节点滞回曲线饱满,其抗震性能指标均和现浇节点相差不大;新型箍筋装配式节点转角变形大于现浇节点。此外,GB 50010—2010《混凝土结构设计规范》能适用于新型箍筋装配式梁柱节点的设计,并且具备一定的安全储备。Since the one-time forming stirrups and multi-spiral stirrups(refers to as "new stirrups") have an excellent confined effect, a prefabricated concrete beam-column joints with new stirrups was proposed. Based on the difference of joint strength, joint types, construction methods and stirrup types, six full-scale concrete beam-column joint specimens were designed. According to the quasi-static load tests, the failure modes, hysteresis curves, skeleton curves, ductility, energy dissipation capacity, strength degradation, stiffness degradation, and joint rotation were discussed. It was found that: strong joint specimens collapsed by the bending failure of beam ends, and weak joint specimens failed by the shear failure of joint zones;the prefabricated concrete beam-column joints with new stirrups had plump hysteresis curves, and their seismic performance indexes were similar to that of the cast-in-place joints;the joint rotation of the prefabricated concrete beam-column joints with new stirrups was larger than that of the cast-in-place joints. In addition, the Code of Concrete Structures Design(GB 50010—2010) can be used to design the prefabricated concrete beam-column joints with new stirrups, accompanied with a certain degree of safety reserve.

关 键 词：新型箍筋 装配式混凝土 梁柱节点 抗震性能 

分 类 号：TU37[建筑科学—结构工程] TU352.11