RCS混合干法框架梁柱节点试验研究  

Experimental study on beam-column joints of RCS dry-mixed frame

作　　者：舒兴平[1] 刘阳 张再华[2] 袁智深 SHU Xingping;LIU Yang;ZHANG Zaihua;YUAN Zhishen(Steel Structural Institute of Civil Engineering College,Hunan University,Changsha 410082,China;College of Civil Engineering,Hunan City University,Yiyang 413000,China;College of Civil Engineering,Central South University of Forestry and Technology,Changsha 410004,China)

机构地区：[1]湖南大学土木工程学院钢结构研究所,长沙410082 [2]湖南城市学院土木工程学院,益阳413000 [3]中南林业科技大学土木工程学院,长沙410004

出　　处：《建筑结构》2021年第18期24-31,124,共9页Building Structure

基　　金：国家自然科学基金项目(5177081911)。

摘　　要：基于梁柱顶底角钢连接节点的良好耗能能力特点,提出了一种由顶底角钢连接的预制钢筋混凝土柱与型钢梁干法连接的梁柱节点连接形式。以梁柱边节点为研究对象,针对两组6个节点分别开展了单调静力加载及循环加载试验研究,探讨分析了该类型节点的抗弯性能、抗震性能以及相应的破坏模式。单调静力加载试验结果表明,梁高的增加不但会延迟螺栓滑移,还会提高节点的初始转动刚度和节点的抗弯承载力;梁端螺栓排数的提高不仅会增加节点的抗弯承载力,在一定程度上还避免了滑移现象的产生。循环加载试验考察了各个试件的滞回曲线、耗能、刚度、延性。结果表明,RCS混合干法框架梁柱节点是一种典型的半刚性连接节点,与现有的现浇钢筋混凝土梁柱节点相比具有更好的耗能能力和延性。Based on the characteristics of good energy dissipation capacity of beam-column top and bottom angle steel joints,a kind of dry-connection form of beam-column joint of prefabricated reinforced concrete column connected by top and bottom angle steels was proposed.Taking the beam-column side joint as the research object,the monotonic static loading and cyclic loading tests were carried out for two groups of six joints respectively,and the flexural performance,seismic performance and corresponding failure mode of this type of joint were discussed and analyzed.The monotonic static loading test results show that the increase of beam height not only delays the bolt sliding,but also improves the initial rotational stiffness and flexural capacity of the joint.The increase of bolt row at the beam end not only increases the flexural capacity of the joint,but also avoids the occurrence of slip to a certain extent.The hysteretic curve,energy consumption,stiffness and ductility of each specimen were investigated by cyclic loading test.The results show that the beam-column joints of RCS dry-mixed frame is a typical semi-rigid connection,which has better energy dissipation capacity and ductility than the existing cast-in-place reinforced concrete beam-column joint.

关 键 词：顶底角钢 干法连接 梁柱边节点 单调静力加载 滞回曲线 半刚性连接 

分 类 号：TU398[建筑科学—结构工程]