钢管约束钢筋混凝土柱梁节点研究现状与分析进展  

Research status and analysis progress of steel tube⁃confined reinforced concrete column⁃beam joints

作　　者：王秋维[1] 梁林 WANG Qiuwei;LIANG Lin(School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《建筑结构》2024年第3期7-14,38,共9页Building Structure

基　　金：国家自然科学基金资助项目(51878543);陕西省教育厅科学研究计划项目(20JS078)。

摘　　要：钢管约束钢筋混凝土(steel tube-constrained reinforced concrete,STRC)柱具有优越的力学性能,但当STRC柱应用于框架结构时,常存在难以满足“强节点、弱构件”抗震设计要求的问题。为改善STRC柱梁节点的抗震性能,总结归纳了目前STRC柱梁节点的构造形式及增强机理,从工作机理、增强效果、易施工性等方面对各种构造形式的节点进行对比,认为复合式节点是解决STRC柱框架节点薄弱问题的最优途径。并进一步分析了不同构造形式STRC柱节点的轴压性能、抗震性能和理论设计方法,结果表明环梁对节点轴压承载力提升显著,钢管约束式节点轴压和抗震性能均表现良好,且设计理论较为成熟。最后,在试验研究和理论分析基础上,剖析了该研究领域亟需解决的问题和研究发展方向。Steel tube⁃constrained reinforced concrete(STRC)columns have superior mechanical properties.However,when STRC columns are used in frame structures,there is often a problem that it is difficult to meet the seismic design requirements of“strong nodes and weak members”.In order to improve the seismic performance of the STRC column⁃beam joints,the current structural form and reinforcement mechanism of the STRC column⁃beam joints were summarized,and various structural forms of joints were compared from the aspects of working mechanism,reinforcement effect,and ease of construction.“composite joint”is considered as the best way to solve the weak problem of STRC column frame joints.The axial compression performance,seismic performance and theoretical design methods of the STRC column joints with different structural forms were further analyzed.The results show that the ring beam has a significant increase in the axial compression bearing capacity of the joints.The axial compression and seismic performance of steel tube⁃constrained joints are good,and the design theory is relatively mature.Finally,the urgent problems in this research field and the research development direction were analyzed based on experimental and theoretical research.

关 键 词：钢管约束钢筋混凝土 构造形式 增强机理 抗震性能 研究进展 

分 类 号：TU398.2[建筑科学—结构工程]