环梁直径对CFST柱-RC梁节点力学性能的影响  

Effect of Ring Beam Diameter on Mechanical Properties of CFST Column-RC Beam Joints

作　　者：周刚 田时雨 雷鸣 张溜 ZHOU Gang;TIAN Shi-yu;LEI Ming;ZHANG Liu(Canton One Construction Group Co.,Ltd.,Guangzhou 510060)

机构地区：[1]广州一建建设集团有限公司,广州510060

出　　处：《广州建筑》2024年第9期10-13,共4页GUANGZHOU ARCHITECTURE

基　　金：广州市建筑集团有限公司科技计划项目([2024]-KJ005、[2024]-KJ006、[2024]-KJ008)。

摘　　要：钢管混凝土结构作为一种承载力高、刚度大、延性好的新型组合构件,被广泛应用于超高层结构中。而钢管混凝土柱与钢筋混凝土梁的连接节点一直是国内外学者和工程人员关注的要点问题。本文采用有限元分析的方法,探讨了不同环梁直径对新型钢管混凝土柱-钢筋混凝土梁节点力学性能的影响规律。结果表明:当环梁直径由500 mm增加到700 mm时,试件的初始刚度、峰值荷载、峰值位移和钢筋应力水平分别增加了4.2%、11.4%、7.5%和4.6%,表明环梁直径的增加能够增大节点的承载力,但提升作用有限。As a new type of combined member with high bearing capacity,high stiffness and good ductility,concrete-filled steel tubular(CFST)structure is widely used in super high-rise structures.The connection of CFST columns and reinforced concrete(RC).beams has been a key issue of concern for scholars and engineers at home and abroad.In this paper,the influence of different ring beam diameters on the mechanical properties of the new CFST column-RC beam joint is investigated by using finite element analysis.The results showed that when the diameter of the ring beam was increased from 500 mm to 700 mm,the initial stiffness,peak load,peak displacement and reinforcement stress level of the specimens increased by 4.2%,11.4%,7.5%and 4.6%,respectively,which indicated that the increase in the diameter of the ring beam could increase the bearing capacity of the joint with limited effect.

关 键 词：钢管混凝土 RC梁 环梁 节点 力学性能 

分 类 号：TU984[建筑科学—城市规划与设计]