CFST柱—RC环扁梁节点性能试验
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摘要
进行了钢管混凝土(CFST)柱—钢筋混凝土(RC)环扁梁节点的静载和低周反复荷载试验,分析了节点的破坏形态、延性、耗能能力等性能。试验结果表明,钢管混凝土核心区未发生屈服破坏情况;对于静载,塑性铰产生于扁梁和环扁梁交界处,对于低周反复荷载,塑性铰产生于环扁梁上;环扁梁与钢管混凝土柱间未发现明显滑移现象。节点连接可靠,具有较好的延性以及耗能能力,能够满足延性抗震设计要求。
Based on the experiments of concrete filled steel tubular(CFST) column-reinforced concrete ring flat beam Joints under static loading and quasi-static cyclic loading,the failure pattern,ductility and energy-dissipation capacity of the joints were analyzed.The test results reveal that the joint core of CFST columns is integral;for the static loading test,the plastic hinges appear at the interface between ring flat beams and flat beams,and for the quasi-static cyclic loading test,the plastic hinges appear at ring flat beams;the slippage between ring flat beams and CFST columns can be ignored;the internal forces of flat beams can be transformed into CFST columns efficiently.This kind of joints has better ductility,energy-dissipation capacity,and can meet the requirements of ductile seismic resistant design.
Based on the experiments of concrete filled steel tubular(CFST) column-reinforced concrete ring flat beam Joints under static loading and quasi-static cyclic loading,the failure pattern,ductility and energy-dissipation capacity of the joints were analyzed.The test results reveal that the joint core of CFST columns is integral;for the static loading test,the plastic hinges appear at the interface between ring flat beams and flat beams,and for the quasi-static cyclic loading test,the plastic hinges appear at ring flat beams;the slippage between ring flat beams and CFST columns can be ignored;the internal forces of flat beams can be transformed into CFST columns efficiently.This kind of joints has better ductility,energy-dissipation capacity,and can meet the requirements of ductile seismic resistant design.
引文
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[11]戎长军,吴正民,苏亚武,等.钢管混凝土柱新型梁柱节点—环梁节点[J].施工技术,2004,33(4):28~30.RONG Chang-jun,WU Zheng-min,SU Ya-wu.Ring Beam Joint,A New Column-beam Joint of Steel Pipe Concrete Column[J].Construction Technology,2004,33(4):28~30.(in Chinese)
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[13]杨芳.钢管混凝土柱—钢筋混凝土环扁梁中节点抗震性能的研究[D].福州:福州大学土木工程学院,2006.YANG Fang.Steel Tube Confined Concrete Column—The Loading Behavior of Steel Tube Confined Concrete Flat Beam-col-umn Joints[D].Fuzhou:School of Civil Engineering,Fouzhou University,2006.(in Chinese)
[14]JGJ101-96.建筑抗震试验方法规程[S].JGJ101-96.Specification of Testing Methods for Earthquake Resistant Building[S].(in Chinese)
[15]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.ZHU Bo-long.Structural Earthquake-resistance Test[M].Beijing:Earthquake Press,1989.(in Chinese)
[2]季韬.扁梁柱节点抗震性能研究[D].杭州:浙江大学博士学位论文,2000.JI Tao.The Study of Loading Behavior of Flat Beam-column Joints[D].Hangzhou:Ph.D.Thesis,Zhejiang University,2000.(in Chinese)
[3]CECS28-90.钢管混凝土结构设计与施工规程[S].CECS28-90.Specification for Design and Construction of Concrete-filled Steel Tubular Structures[S].(in Chinese)
[4]DBJ13-51-2003.钢管混凝土结构技术规程[S].DBJ13-51-2003.Technical Specification for Concrete-filled Steel Tubular[S].(in Chinese)
[5]方小丹,李少云,钱稼茹.钢管混凝土柱—环梁节点抗震性能的试验研究[J].建筑结构学报,2002,23(6):10~18.FANG Xiao-dan,LI Shao-yun,QIAN Jia-ru.Experimental Research on Seismic Behavior of Concrete Filled Steel Tubular Col-umn Ring Beam Joint Under Cyclic Loading[J].Journal of Building Structures,2002,23(6):10~18.(in Chinese)
[6]钱稼茹,周栋梁,方小丹.钢管混凝土柱—RC环梁节点及其应用[J].建筑结构,2003,33(9):60~72.QIAN Jia-ru,ZHOU Dong-liang,FANG Xiao-dan.Steel Tube Confined Concrete Column-RC Ring Beam Joint[J].Journal ofBuilding Structures,2003,33(9):60~72.(in Chinese)
[7]周栋梁,钱稼茹,方小丹,等.环梁连接的RC梁—钢管混凝土柱框架试验研究[J].土木工程学报,2004,37(5):7~15.ZHOU Dong-liang,QIAN Jia-ru,FANG Shao-dan.Experimental Study on Arc Beam—STCC Column Frame with RC RingBeam Connectors[J].China Civil Engineering Journal,2004,37(5):7~15.(in Chinese)
[8]李少云,方小丹,杨润强.广州市翠湖山庄工程钢管混凝土柱节点足尺静载试验研究[J].土木工程学报,2001,34(6):11~16.LI Shao-yun,FANG Xiao-dan,YANG Run-qiang.A Static Test on Joint between STCC Column and Encircle-beam[J].ChinaCivil Engineering Journal,2001,34(6):11~16.(in Chinese)
[9]黄汉炎,梁宇行,李曦新,等.钢管混凝土柱、RC梁板节点拟静力三向加载的试验研究[J].建筑结构学报,2001,22(6):3~13.HANG Han-yan,LIANG Yun-xing,LI Xi-xin.Study on Quasi-static 3D Loading Test for Concrete-filled Steel Tubular Columnand RC Beam-slab Joints[J].Journal of Building Structures,2001,22(6):3~13.(in Chinese)
[10]凌育洪,宋欣.实用可靠的钢管混凝土柱环梁节点[J].哈尔滨工业大学学报,2004,36(10):1378~1381.LIN Yun-hong,SONG Xin.Applicable and Reliable Joint:Reinforced-concrete Ring Beam Joint for Concrete Filled Steel TubeColumn[J].Journal of Harbin Institute of Technology,2004,36(10):1378~1381.(in Chinese)
[11]戎长军,吴正民,苏亚武,等.钢管混凝土柱新型梁柱节点—环梁节点[J].施工技术,2004,33(4):28~30.RONG Chang-jun,WU Zheng-min,SU Ya-wu.Ring Beam Joint,A New Column-beam Joint of Steel Pipe Concrete Column[J].Construction Technology,2004,33(4):28~30.(in Chinese)
[12]高力人,方鄂华,钱家茹.高层建筑结构概念设计[M].北京:中国计划出版社,2005.GAO Li-ren,FANG E-hua,QIAN Jia-ru.Structural Concept Design for Tall Building[M].Beijing:China Planning Press,2005.(in Chinese)
[13]杨芳.钢管混凝土柱—钢筋混凝土环扁梁中节点抗震性能的研究[D].福州:福州大学土木工程学院,2006.YANG Fang.Steel Tube Confined Concrete Column—The Loading Behavior of Steel Tube Confined Concrete Flat Beam-col-umn Joints[D].Fuzhou:School of Civil Engineering,Fouzhou University,2006.(in Chinese)
[14]JGJ101-96.建筑抗震试验方法规程[S].JGJ101-96.Specification of Testing Methods for Earthquake Resistant Building[S].(in Chinese)
[15]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.ZHU Bo-long.Structural Earthquake-resistance Test[M].Beijing:Earthquake Press,1989.(in Chinese)
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