复式钢管混凝土柱-钢梁节点的抗震性能有限元分析
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摘要
复式钢管混凝土柱具有较高的抗压承载力,在强地震作用下具有很好的防倒塌能力,已广泛用于大跨度桥梁和超高层房屋建筑中。基于复式钢管混凝土柱-钢梁节点的试验研究,合理选择材料本构关系、破坏准则,采用ANSYS软件建立了有限元模型,以研究该类节点在低周往复荷载作用下的抗震力学性能。有限元模拟得到的滞回曲线及骨架曲线与试验结果吻合较好,从而验证了有限元模型的合理性。在此基础上,分析了钢梁及内外钢管在受力过程中的应力分布,探索了此类节点的传力机制及最终破坏形态;最后对该类节点进行参数分析,研究了钢梁强度等级、外方钢管柱强度等级、外方钢管柱壁厚及复式钢管混凝土柱轴压比对节点受力性能的影响,供此类新型节点的试验设计及工程应用参考。
The composite concrete-filled steel tube(CFST) column has high compression-bearing capacity,and especially good anti-collapse behavior in strong earthquake,which has been widely used in large-span bridge and super high-rise buildings recently.According to the experimental study on composite concrete-filled steel tube column-steel beam connection,and based on reasonable selection of constitutive relationship of material and failure criteria,the finite element model(FEM) was built by the software ANSYS,the mechanical properties of the connetion were researched under the low cyclic loading.The simulated hysteretic curves and skeleton curves are in good agreement with the experimental data,which verified the reasonableness of the finite element model.Stress analysis was cnducted by using FEM to study the failure mode and force transmission mechanism of the new connection system.Moreover,parametric studies were carried out to investigate the influences of the intensity of steel beam and external square steel tube column,the wall thickness of external square steel tube column and axial compression ratio of the composite CFST tubes column on mechanical behavior of the connection.The results presented give a reference to test design and engineering application of the new type of connection.
The composite concrete-filled steel tube(CFST) column has high compression-bearing capacity,and especially good anti-collapse behavior in strong earthquake,which has been widely used in large-span bridge and super high-rise buildings recently.According to the experimental study on composite concrete-filled steel tube column-steel beam connection,and based on reasonable selection of constitutive relationship of material and failure criteria,the finite element model(FEM) was built by the software ANSYS,the mechanical properties of the connetion were researched under the low cyclic loading.The simulated hysteretic curves and skeleton curves are in good agreement with the experimental data,which verified the reasonableness of the finite element model.Stress analysis was cnducted by using FEM to study the failure mode and force transmission mechanism of the new connection system.Moreover,parametric studies were carried out to investigate the influences of the intensity of steel beam and external square steel tube column,the wall thickness of external square steel tube column and axial compression ratio of the composite CFST tubes column on mechanical behavior of the connection.The results presented give a reference to test design and engineering application of the new type of connection.
引文
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[2]赵振东,崔迪,余世舟,等.汶川地震人员伤亡评估[J].世界地震工程,2012,02:20-25.ZHAO Zhendong,CUI Di,YU Shizhou,et al.Seismic casualty assessment for Wenchuan earthquake[J].World Earthquake Engineering,2012,02:20-25.
[3]马淑芳,郭红香,赵均海,等.复式钢管混凝土偏压柱试验[J].工业建筑,2007,37(12):28-30.MA Shufang,GUO Hongxiang,ZHAO Junhai.Experiment investigation on multibarrel tube-confined concrete under eccentric compression[J].Industrial Construction,2007,37(12):28-30.
[4]张玉芬,赵均海,李小伟.基于统一强度理论的复式钢管混凝土轴压承载力计算[J].西安建筑科技大学学报(自然科学版),2009,41(1):41-46.ZHANG Yufen,ZHAO Junhai,LI Xiaowei.On the axial bearing capacity of composite concrete-filled steel tubes based on the unified theory[J].Journal Xi’an university of Arch.&Tech.(Natural Science Edition),2009,41(1):41-46.
[5]WANG Jingfeng,HAN Linhai,UY Brian.Hysteretic behavior of flush end plate joints to concrete-filled steel tubular columns[J].Journal of Con-structional Steel Research,2009,65(8-9):1644-1663.
[6]王静峰,郭水平,陈莉萍.带肋薄壁钢管混凝土框架梁柱端板连接节点试验研究[J].建筑结构学报,2011,32(8):69-78.WANG Jingfeng,GUO Shuiping,CHEN Liping.Experimental study on behavior of beam-column endplate joints of concrete-filled thin-wallsteel tube frame with ribs[J].Journal of Building Structures,2011,32(8):69-78.
[7]徐桂根,聂建国.方钢管混凝土柱内隔板贯通式节点核心区抗震性能的试验研究[J].土木工程学报,2011,44(8):25-32.Xu Guigen,Nie Jianguo.Experimental study of connections of concrete-filled square steel tubular columns with continuous diaphragms[J].Chi-na Civil Engineering Journal,2011,44(8):25-32.
[8]HAN Linhai,LI Wei.Seismic performance of CFST column to steel beam joints with RC slab:Experiments[J].Journal of Constructional SteelResearch,2010,66(11):1374-1386.
[9]LI Wei,HAN Linhai.Seismic performance of CFST column to steel beam joints with RC slab:analysis[J].Journal of Constructional Steel Re-search,2011,67(1):127-139.
[10]苗纪奎,陈志华,姜忻良.方钢管混凝土柱-钢梁节点承载力试验研究[J].建筑结构学报,2008,29(6):63-68.MIAO Jikui,CHENZhihua,JIANG Xinliang.Experimental study on load-bearing capability of connection between concrete-filled square steel tubular column andsteel beam[J].Journal of Building Structures,2008,29(6):63-68.
[11]苗纪奎,陈志华,姜忻良.方钢管混凝土柱与钢梁的外肋环板节点抗震性能试验研究[J].地震工程与工程振动,2007,27(2):85-90.MIAO Jikui,CHEN Zhihua,JIANG Xinliang.Experimental study on seismic performance of vertical stiffener joints between concrete-filledsquare tubular column and steel beam[J].Earthquake Engineering and Engineering Vibration,2007,27(2):85-90.
[12]ZHANG Yufen,ZHAO Junhai,CAI C S.Seismic behavior of ring beam joints between concrete-filled twin steel tubes columns and reinforcedconcrete beams[J].Engineering Structures,2012,39:1-10.
[13]张玉芬,王育平,赵均海.复式钢管混凝土外钢管不连通环梁节点抗震性能试验研究[J].土木工程学报,2012,45(6):90-100.ZhANG Yufen,WANG Yuping and ZHAO Junhai.Experimental study on seismic behavior of ring beam joint with discontinuous outer tube locatedoutside composite CFST column[J].China Civil Engineering Journal,2012,45(6):90-100
[14]褚云朋,贾彬,周俐俐.复式钢管混凝土梁柱节点抗震性能研究[J].西南科技大学学报,2009,24(1):7-12.CHU Yunpeng,JIA Bin,ZHOU Lili.Seismic behavior study on connection of multibarrel tube-confined concrete column with steel beam[J].Journal of Southwest University of Science and Technology,2009,24(1):7-12.
[15]ATC-24 Guidelines for cyclic seismic testing of components of steel structures[S].Redwood City(CA):Applied Technology Council,1992.
[16]周天华,郭彦利,卢林枫.方钢管混凝土柱-钢梁节点的非线性有限元分析[J].西安科技大学学报,2005,25(3):283-287.ZHOU Tianhua,GUO Yanli,LU Linfeng.Nonlinear FEM analysis of bearing capacity behavior of concrete-filled square tubular column andsteel beam joints[J].Journal Xi’an university of Science and Technology,2005,25(3):283-287.
[17]MALEKI S,TABBAKHHA M.Numerical study of slotted-web–reduced-flange moment connection[J].Journal of Constructional Steel Re-search,2012,69(1):1-7.
[18]黄艳,阚明辉,王自法.单调及低周往复荷载作用下砌体非线性分析[J].世界地震工程,2012,01:135-141.HUANG Yan,KAN Minghui,WANG Zifa.Nonlinear analysis of masonry under monotonic and low cyclic loading[J].World Earthquake Engi-neering,2012,01:135-141.
[19]韩林海.钢管混凝土结构[M].北京:科学出版社,2004.HAN Linhai.Concrete-filled steel tube structure(the third press)[M].Beijing:Science Press,2004.
[20]戎贤,康丽华,李艳艳.钢纤维增强十字形异形柱中节点的抗震性能试验[J].世界地震工程,2012,02:142-147.RONG Xian,KANG Lihua,LI Yanyan.Experimental research on seismic performance of nodes in cross shaped column with steel fiber[J].World Earthquake Engineering,2012,02:142-147.
[2]赵振东,崔迪,余世舟,等.汶川地震人员伤亡评估[J].世界地震工程,2012,02:20-25.ZHAO Zhendong,CUI Di,YU Shizhou,et al.Seismic casualty assessment for Wenchuan earthquake[J].World Earthquake Engineering,2012,02:20-25.
[3]马淑芳,郭红香,赵均海,等.复式钢管混凝土偏压柱试验[J].工业建筑,2007,37(12):28-30.MA Shufang,GUO Hongxiang,ZHAO Junhai.Experiment investigation on multibarrel tube-confined concrete under eccentric compression[J].Industrial Construction,2007,37(12):28-30.
[4]张玉芬,赵均海,李小伟.基于统一强度理论的复式钢管混凝土轴压承载力计算[J].西安建筑科技大学学报(自然科学版),2009,41(1):41-46.ZHANG Yufen,ZHAO Junhai,LI Xiaowei.On the axial bearing capacity of composite concrete-filled steel tubes based on the unified theory[J].Journal Xi’an university of Arch.&Tech.(Natural Science Edition),2009,41(1):41-46.
[5]WANG Jingfeng,HAN Linhai,UY Brian.Hysteretic behavior of flush end plate joints to concrete-filled steel tubular columns[J].Journal of Con-structional Steel Research,2009,65(8-9):1644-1663.
[6]王静峰,郭水平,陈莉萍.带肋薄壁钢管混凝土框架梁柱端板连接节点试验研究[J].建筑结构学报,2011,32(8):69-78.WANG Jingfeng,GUO Shuiping,CHEN Liping.Experimental study on behavior of beam-column endplate joints of concrete-filled thin-wallsteel tube frame with ribs[J].Journal of Building Structures,2011,32(8):69-78.
[7]徐桂根,聂建国.方钢管混凝土柱内隔板贯通式节点核心区抗震性能的试验研究[J].土木工程学报,2011,44(8):25-32.Xu Guigen,Nie Jianguo.Experimental study of connections of concrete-filled square steel tubular columns with continuous diaphragms[J].Chi-na Civil Engineering Journal,2011,44(8):25-32.
[8]HAN Linhai,LI Wei.Seismic performance of CFST column to steel beam joints with RC slab:Experiments[J].Journal of Constructional SteelResearch,2010,66(11):1374-1386.
[9]LI Wei,HAN Linhai.Seismic performance of CFST column to steel beam joints with RC slab:analysis[J].Journal of Constructional Steel Re-search,2011,67(1):127-139.
[10]苗纪奎,陈志华,姜忻良.方钢管混凝土柱-钢梁节点承载力试验研究[J].建筑结构学报,2008,29(6):63-68.MIAO Jikui,CHENZhihua,JIANG Xinliang.Experimental study on load-bearing capability of connection between concrete-filled square steel tubular column andsteel beam[J].Journal of Building Structures,2008,29(6):63-68.
[11]苗纪奎,陈志华,姜忻良.方钢管混凝土柱与钢梁的外肋环板节点抗震性能试验研究[J].地震工程与工程振动,2007,27(2):85-90.MIAO Jikui,CHEN Zhihua,JIANG Xinliang.Experimental study on seismic performance of vertical stiffener joints between concrete-filledsquare tubular column and steel beam[J].Earthquake Engineering and Engineering Vibration,2007,27(2):85-90.
[12]ZHANG Yufen,ZHAO Junhai,CAI C S.Seismic behavior of ring beam joints between concrete-filled twin steel tubes columns and reinforcedconcrete beams[J].Engineering Structures,2012,39:1-10.
[13]张玉芬,王育平,赵均海.复式钢管混凝土外钢管不连通环梁节点抗震性能试验研究[J].土木工程学报,2012,45(6):90-100.ZhANG Yufen,WANG Yuping and ZHAO Junhai.Experimental study on seismic behavior of ring beam joint with discontinuous outer tube locatedoutside composite CFST column[J].China Civil Engineering Journal,2012,45(6):90-100
[14]褚云朋,贾彬,周俐俐.复式钢管混凝土梁柱节点抗震性能研究[J].西南科技大学学报,2009,24(1):7-12.CHU Yunpeng,JIA Bin,ZHOU Lili.Seismic behavior study on connection of multibarrel tube-confined concrete column with steel beam[J].Journal of Southwest University of Science and Technology,2009,24(1):7-12.
[15]ATC-24 Guidelines for cyclic seismic testing of components of steel structures[S].Redwood City(CA):Applied Technology Council,1992.
[16]周天华,郭彦利,卢林枫.方钢管混凝土柱-钢梁节点的非线性有限元分析[J].西安科技大学学报,2005,25(3):283-287.ZHOU Tianhua,GUO Yanli,LU Linfeng.Nonlinear FEM analysis of bearing capacity behavior of concrete-filled square tubular column andsteel beam joints[J].Journal Xi’an university of Science and Technology,2005,25(3):283-287.
[17]MALEKI S,TABBAKHHA M.Numerical study of slotted-web–reduced-flange moment connection[J].Journal of Constructional Steel Re-search,2012,69(1):1-7.
[18]黄艳,阚明辉,王自法.单调及低周往复荷载作用下砌体非线性分析[J].世界地震工程,2012,01:135-141.HUANG Yan,KAN Minghui,WANG Zifa.Nonlinear analysis of masonry under monotonic and low cyclic loading[J].World Earthquake Engi-neering,2012,01:135-141.
[19]韩林海.钢管混凝土结构[M].北京:科学出版社,2004.HAN Linhai.Concrete-filled steel tube structure(the third press)[M].Beijing:Science Press,2004.
[20]戎贤,康丽华,李艳艳.钢纤维增强十字形异形柱中节点的抗震性能试验[J].世界地震工程,2012,02:142-147.RONG Xian,KANG Lihua,LI Yanyan.Experimental research on seismic performance of nodes in cross shaped column with steel fiber[J].World Earthquake Engineering,2012,02:142-147.
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