装配式框架结构新型梁柱节点抗震性能试验  

EXPERIMENTAL RESEARCH ON SEISMIC BEHAVIOR OF NEW COLUMN-TO-BEAM JOINTS FOR PREFABRICATED CONCRETE FRAME

作　　者：谷伟[1] 张馨心[2] 李忠培 张延年[2] GU Wei;ZHANG Xinxin;LI Zhongpei;ZHANG Yannian(Jiaxing Vocational Technical College,Jiaxing 314030,China;School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]嘉兴职业技术学院,浙江嘉兴314030 [2]沈阳建筑大学土木工程学院,沈阳110168

出　　处：《工业建筑》2019年第5期57-61,共5页Industrial Construction

基　　金：浙江省基础公益计划研究项目(LGF18E080009);住房和城乡建设部科学技术项目(2015-K2-016);“十二五”国家科技支撑计划项目(2012BAJ16B05)

摘　　要：针对目前装配式混凝土框架结构梁柱节点连接工艺复杂、质量控制难等问题,提出一种构造简单,安装方便的新型节点连接形式。通过对5个足尺寸模型试件进行拟静力试验,得到了各试件破坏形态、滞回曲线、骨架曲线和延性系数等抗震性能参数。结果表明:新型节点试件从加载到破坏均经历了弹性阶段、带裂缝工作阶段和破坏阶段,破坏区域主要发生在后浇区域与预制节点梁结合处,节点核心区没有明显破坏,符合强节点抗震设计理念;滞回曲线在试件屈服前呈梭形,屈服后产生捏缩现象而趋于S形,试件耗能能力与全现浇式节点大致相同,能量耗能系数随混凝土强度等级、配筋率提高而变大,延性系数平均值为6.51,钢筋钩挂连接处工作性能良好。Aiming at the problems such as complex connection technique and difficult quality control of column-to-beam joints of prefabricated concrete frame structure at present, the paper presented a new type of connection form with simple structure and convenient installation, and designed five full size model specimens. The quasi-static test was carried out.The seismic behavior parameters such as failure modes, hysteresis curve, skeleton curve and ductility coefficient of each specimen were analyzed by means of experimental phenomena and data. The results showed that the specimens of the new type of joints had experienced elastic stage, working stage with crack and failure stage from loading to failure, and the failure zone mainly occurred in the post-pouring area and the prefabricated joint beam, and there was no obvious damage in the core zone of the joint according with the idea of seismic design of strong joints. At the same time, it was also shown that the hysteresis curve appeared shuttle shape before the specimen yielded, and then produced pinch phenomenon and tended to S-shape after yielding, the energy dissipation capacity of the specimens was the same as that of the full cast-in-place joint, the energy dissipation coefficient of the specimens increased with the increasing of the concrete grade and the reinforcement ratio, the average value of the ductility coefficient was 6.51, and the joint of hook and hang had good working performance.

关 键 词：装配式框架结构 新型梁柱节点 拟静力试验 抗震性能 滞回曲线 

分 类 号：TU352.11[建筑科学—结构工程]