矩形钢管混凝土树状节点受力分析
|
摘要
钢管混凝土树状节点是由钢管混凝土Y形柱与双十字形梁柱节点组合而成的复杂节点。采用ANSYS对该类节点进行非线性有限元计算分析,计算模型考虑材料,几何和接触非线性。梁端荷载位移曲线以及滞回曲线与试验吻合较好,并能准确模拟出节点的破坏形态。分析有限元计算结果表明:梁端加劲肋使拉压应力能有效传递到内隔板,中间孔洞的存在对内隔板的传力影响较小,反复荷载作用下节点核心区混凝土对角区受压,对梁端压应力的传递有较大贡献。
Dendriform connections of concrete filled steel rectangular tubes(CFSRT) are composed of a bifurcated column and double-cruciform beam-column connections.A 3-D nonlinear finite element analysis(FEA) which considers all nonlinear effects of materials,geometry and contact interfaces is established.Analysis of the FEA results show that the load-displacement curves at the ends of the beam and hysteretic curves obtained experimentally and via FEA agreed with each other.The stiffener transfers the tension-compression stress efficiently,the middle hole has little influence on the stress transfer,and the compressive zone of the core concrete under repeated loading has a greater contribution to the compression stress transfer.
Dendriform connections of concrete filled steel rectangular tubes(CFSRT) are composed of a bifurcated column and double-cruciform beam-column connections.A 3-D nonlinear finite element analysis(FEA) which considers all nonlinear effects of materials,geometry and contact interfaces is established.Analysis of the FEA results show that the load-displacement curves at the ends of the beam and hysteretic curves obtained experimentally and via FEA agreed with each other.The stiffener transfers the tension-compression stress efficiently,the middle hole has little influence on the stress transfer,and the compressive zone of the core concrete under repeated loading has a greater contribution to the compression stress transfer.
引文
[1]翰林海.钢管混凝土结构:理论与实践[M].北京:科学出版社,2004.
[2]周学军,曲慧.方钢管混凝土框架梁柱节点在低周期往复荷载作用下的抗震性能研究[J].土木工程学报,2006,39(1):38-42.ZHOU XUE-JUN,QU HUI.Seismic resistance ofbole-weld joint and all-weld joint of concrete filledsquare steel tube and steel beam under cyclic load.China Civil Engineering Journal[J].2006,39(1):38-42.
[3]余勇,吕西林.方钢管混凝土柱的三位非线性分析[J].地震工程与工程振动,1999,19(1):57-64.YU YONG,LU XI-LIN.3D Nonlinear analysis forconcrete filled steel rectangular tube columns[J].Earthquake Engineering and Engineering Vibration,1999,19(1):57-64.
[4]查晓熊,唐家祥.钢管混凝土结构非线性有限元分析中混凝土边界面模型的研究及应用[J].2006,27(2):29-35.ZHA XIAO-XIONG,TANG JIA-XIANG.The studyand application of concrete bounding surfaceconstitutive relationships to the nonlinear finite elementanalysis of concrete filled steel tubular structures[J].2006,27(2):29-35.
[5]聂建国,秦凯.方钢管混凝土内隔板式节点的抗弯承载力研究[J].建筑科学与工程学报,2005,22(1):42-49.NIE JIAN-GUO,QIN KAI.Experimental research andtheoretical analysis on flexural capacity of connectionfor concrete-filled steel square tubu columns with innerdiaphragms[J].Journal of Architecture and CivilEngineering,2005,22(1):42-49.
[6]宗周红,葛继平.方钢管混凝土柱与钢梁连接节点的拟静力试验研究[J].建筑结构学报,2005,26(1):75-81.ZONG ZHOU-HONG,GE JI-PING.Nonlinear finiteelement analysis of the concrete filled square steeltubular column to steel beam connections under low-cycle reversed loading[J].Journal of BuildingStructures,2005,26(1):75-81.
[7]周天华,聂少峰.带内隔板的方钢管混凝土柱-钢梁节点设计研究[J].建筑结构学报,2005,26(5):23-29.ZHOU TIAN-HUA,NIE SHAO-FENG.Design ofconcrete-filled square tube column and steel beam jointwith internal diaphragms[J].Journal of BuildingStructures,2005,26(5):23-29.
[8]周天华,何保康.方钢管混凝土柱与钢梁框架节点的抗震性能试验研究[J].建筑结构学报,2004,25(1):9-16.ZHOU TIAN-HUA,HE BAO-KANG.Experimentalstudies on seismic behavior of concrete-filled steelsquare tubular column and steel beam joints under cyclicloading[J].Journal of Building Structures,2004,25(1):9-16.
[9]ALOSTAZ Y M,SCHNEIDER S P.Analytical behaviorof connections to concrete-filled steel tubes[J].Journal ofConstructional Steel Research,1996,40(2):95-127.
[10]SUSANTHA K A S,HANBIN G E,USAMI T.Uniaxialstress-strain relationshio of concrete confined by cariousshaped steel tubes[J].Engineering Structures,2001,23:1331-1347.
[11]VARM A H,RICLESM J M,RICHARD S.Seismic behaviorand modeling of high-strength composite concrete-filled steeltube(CFT)beam-columns[J].Journal of Constructional SteelResearch,2002,58:725-758.
[12]RICLES J M,ASCE M,PENG S W,et al.Seismicbehavior of composite concrete filled steel tube column-wide flange beam moment connections[J].Journal ofStructural Engineering,2004,130(2):223-332.
[13]MATHIAS J.Composite action in connection regions ofconcrete-filled steel tube columns[J].Steel and CompositeStructure,2003,3(1):47-64.
[14]BEUTEL J,THAMBIRATNAM D,PERERA N.Cyclicbehavior of concrete filled steel tubular column to steelbeam connections[J].Engineering Structures,2002,(24):29-38.
[15]RASSATI G A,LEON T,NOE S.Component modelingof partially restrained composite joints under cyclic anddynamic loading[J].Journal of Structure Engineering,2004,130(2):343-351.
[2]周学军,曲慧.方钢管混凝土框架梁柱节点在低周期往复荷载作用下的抗震性能研究[J].土木工程学报,2006,39(1):38-42.ZHOU XUE-JUN,QU HUI.Seismic resistance ofbole-weld joint and all-weld joint of concrete filledsquare steel tube and steel beam under cyclic load.China Civil Engineering Journal[J].2006,39(1):38-42.
[3]余勇,吕西林.方钢管混凝土柱的三位非线性分析[J].地震工程与工程振动,1999,19(1):57-64.YU YONG,LU XI-LIN.3D Nonlinear analysis forconcrete filled steel rectangular tube columns[J].Earthquake Engineering and Engineering Vibration,1999,19(1):57-64.
[4]查晓熊,唐家祥.钢管混凝土结构非线性有限元分析中混凝土边界面模型的研究及应用[J].2006,27(2):29-35.ZHA XIAO-XIONG,TANG JIA-XIANG.The studyand application of concrete bounding surfaceconstitutive relationships to the nonlinear finite elementanalysis of concrete filled steel tubular structures[J].2006,27(2):29-35.
[5]聂建国,秦凯.方钢管混凝土内隔板式节点的抗弯承载力研究[J].建筑科学与工程学报,2005,22(1):42-49.NIE JIAN-GUO,QIN KAI.Experimental research andtheoretical analysis on flexural capacity of connectionfor concrete-filled steel square tubu columns with innerdiaphragms[J].Journal of Architecture and CivilEngineering,2005,22(1):42-49.
[6]宗周红,葛继平.方钢管混凝土柱与钢梁连接节点的拟静力试验研究[J].建筑结构学报,2005,26(1):75-81.ZONG ZHOU-HONG,GE JI-PING.Nonlinear finiteelement analysis of the concrete filled square steeltubular column to steel beam connections under low-cycle reversed loading[J].Journal of BuildingStructures,2005,26(1):75-81.
[7]周天华,聂少峰.带内隔板的方钢管混凝土柱-钢梁节点设计研究[J].建筑结构学报,2005,26(5):23-29.ZHOU TIAN-HUA,NIE SHAO-FENG.Design ofconcrete-filled square tube column and steel beam jointwith internal diaphragms[J].Journal of BuildingStructures,2005,26(5):23-29.
[8]周天华,何保康.方钢管混凝土柱与钢梁框架节点的抗震性能试验研究[J].建筑结构学报,2004,25(1):9-16.ZHOU TIAN-HUA,HE BAO-KANG.Experimentalstudies on seismic behavior of concrete-filled steelsquare tubular column and steel beam joints under cyclicloading[J].Journal of Building Structures,2004,25(1):9-16.
[9]ALOSTAZ Y M,SCHNEIDER S P.Analytical behaviorof connections to concrete-filled steel tubes[J].Journal ofConstructional Steel Research,1996,40(2):95-127.
[10]SUSANTHA K A S,HANBIN G E,USAMI T.Uniaxialstress-strain relationshio of concrete confined by cariousshaped steel tubes[J].Engineering Structures,2001,23:1331-1347.
[11]VARM A H,RICLESM J M,RICHARD S.Seismic behaviorand modeling of high-strength composite concrete-filled steeltube(CFT)beam-columns[J].Journal of Constructional SteelResearch,2002,58:725-758.
[12]RICLES J M,ASCE M,PENG S W,et al.Seismicbehavior of composite concrete filled steel tube column-wide flange beam moment connections[J].Journal ofStructural Engineering,2004,130(2):223-332.
[13]MATHIAS J.Composite action in connection regions ofconcrete-filled steel tube columns[J].Steel and CompositeStructure,2003,3(1):47-64.
[14]BEUTEL J,THAMBIRATNAM D,PERERA N.Cyclicbehavior of concrete filled steel tubular column to steelbeam connections[J].Engineering Structures,2002,(24):29-38.
[15]RASSATI G A,LEON T,NOE S.Component modelingof partially restrained composite joints under cyclic anddynamic loading[J].Journal of Structure Engineering,2004,130(2):343-351.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心