不同构造形式加强型节点断裂特性分析
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摘要
加强型节点是一种基于塑性铰外移的梁柱连接形式,具有良好的延性性能和较强的承载力,为系统分析和对比不同构造形式加强型节点的断裂性能,采用有限元分析软件ANSYS分别对5种加强型节点以及普通节点进行了有限元数值模拟,对影响节点受力性能的关键部位做了分析和探讨,利用断裂特性指数对节点发生脆性断裂的机理进行了研究.
The reinforced node with excellent ductility is a new beam-column connection that is based on the plastic hinge shifting method.In order to compare the fracture behavior of different structural forms of reinforced nodes systematically and comprehensively,this paper takes the finite element software ANSYS to make finite element simulation respectively for five reinforced nodes and an ordinary node,analyzes and discusses the mechanical behavior of key parts of joints that may cause cracking,and studies the mechanism of brittle fracture by fracture characteristics index.
The reinforced node with excellent ductility is a new beam-column connection that is based on the plastic hinge shifting method.In order to compare the fracture behavior of different structural forms of reinforced nodes systematically and comprehensively,this paper takes the finite element software ANSYS to make finite element simulation respectively for five reinforced nodes and an ordinary node,analyzes and discusses the mechanical behavior of key parts of joints that may cause cracking,and studies the mechanism of brittle fracture by fracture characteristics index.
引文
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[2]黄第云.钢框架地震响应的Push-over模拟及加腋梁柱焊接节点抗震性能研究[D].天津:天津大学,2004.HUANG Di-yun.Push-over analysis of steel frame seismic response and the study of seismic performance of the weld haunch beam-col-umn connection[D].Tianjin:Tianjin University,2004.
[3]高鹏.钢框架梁端翼缘侧板加强式和扩翼式节点受力性能的试验研究[D].青岛:青岛理工大学,2009.GAO Peng.Experimental evaluation on the behaviors of side-plate reinforced section and widen flange section of steel frame[D].Qing-dao:Qingdao Technological University,2009.
[4]黑伟伟.钢框架盖板加强型节点低周反复荷载试验研究[D].青岛:青岛理工大学,2010.HEI Wei-wei.Experimental study of steel frame cover-plate reinforced joints under cyclic loading[D].Qingdao:Qingdao Technological University,2010.
[5]王鹏.钢框架梁翼缘板加强型和盖板加强型节点的试验研究[D].青岛:青岛理工大学,2009.WANG Peng.Experimental evaluation of flange-plate-reinforced and cover-plate-reinforced steel moment-resisting connections[D].Qingdao:Qingdao Technological University,2009.
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[7]毛辉.钢框架梁翼缘扩翼型节点力学性能研究[D].西安:西安建筑科技大学,2010.MAO Hui.Mechanical behaviour research on widened beam flange connections of steel frame[D].Xi’an:Xi’an University of Archi-tecture and Technology,2010.
[8]EI-Tawil S,Mikesell T,Kunnath S K.Effect of local details and yield ratio on behavior of FR steel connections[J].Journal of Struc-tural Engineering,ASCE,2000,126(11):79-87.
[9]Mao C,Ricles J,Lu L W,et al.Effect of local details on ductility of welded moment connections[J].Journal of Structural Engineering,ASCE,2001,127(9):1036-1044.
[10]Hancock J W,MacKenzie A C.On the mechanisms of ductile failure in high strength steel subject to multi-axial stress-states[J].Journal Mech Phys Solids,1976,24:147-169.
[11]舒兴平,黎永.局部构造对钢框架梁-柱刚性节点性能的影响[J].建筑结构,2002,32(9):11-14.SHU Xing-ping,LI Yong.The impact of local structural on the behavior of steel beam-column moment connections[J].Building Structure,2002,32(9):11-14.
[12]王薇.钢框架板式加强型焊接节点的断裂性能分析[D].青岛:青岛理工大学,2011.WANG Wei.Study on fracture behavior of plate welded moment-resisting connections in steel frame[D].Qingdao:Qingdao Techno-logical University,2011.
[13]AISC.Seismic provisions for structural steel building[S],2005.
[2]黄第云.钢框架地震响应的Push-over模拟及加腋梁柱焊接节点抗震性能研究[D].天津:天津大学,2004.HUANG Di-yun.Push-over analysis of steel frame seismic response and the study of seismic performance of the weld haunch beam-col-umn connection[D].Tianjin:Tianjin University,2004.
[3]高鹏.钢框架梁端翼缘侧板加强式和扩翼式节点受力性能的试验研究[D].青岛:青岛理工大学,2009.GAO Peng.Experimental evaluation on the behaviors of side-plate reinforced section and widen flange section of steel frame[D].Qing-dao:Qingdao Technological University,2009.
[4]黑伟伟.钢框架盖板加强型节点低周反复荷载试验研究[D].青岛:青岛理工大学,2010.HEI Wei-wei.Experimental study of steel frame cover-plate reinforced joints under cyclic loading[D].Qingdao:Qingdao Technological University,2010.
[5]王鹏.钢框架梁翼缘板加强型和盖板加强型节点的试验研究[D].青岛:青岛理工大学,2009.WANG Peng.Experimental evaluation of flange-plate-reinforced and cover-plate-reinforced steel moment-resisting connections[D].Qingdao:Qingdao Technological University,2009.
[6]Popov Egor P,Tsai K C.Performance of large seismic steel moment connections under cyclic loads[J].Engineering Journal,1989,26(2):51-60.
[7]毛辉.钢框架梁翼缘扩翼型节点力学性能研究[D].西安:西安建筑科技大学,2010.MAO Hui.Mechanical behaviour research on widened beam flange connections of steel frame[D].Xi’an:Xi’an University of Archi-tecture and Technology,2010.
[8]EI-Tawil S,Mikesell T,Kunnath S K.Effect of local details and yield ratio on behavior of FR steel connections[J].Journal of Struc-tural Engineering,ASCE,2000,126(11):79-87.
[9]Mao C,Ricles J,Lu L W,et al.Effect of local details on ductility of welded moment connections[J].Journal of Structural Engineering,ASCE,2001,127(9):1036-1044.
[10]Hancock J W,MacKenzie A C.On the mechanisms of ductile failure in high strength steel subject to multi-axial stress-states[J].Journal Mech Phys Solids,1976,24:147-169.
[11]舒兴平,黎永.局部构造对钢框架梁-柱刚性节点性能的影响[J].建筑结构,2002,32(9):11-14.SHU Xing-ping,LI Yong.The impact of local structural on the behavior of steel beam-column moment connections[J].Building Structure,2002,32(9):11-14.
[12]王薇.钢框架板式加强型焊接节点的断裂性能分析[D].青岛:青岛理工大学,2011.WANG Wei.Study on fracture behavior of plate welded moment-resisting connections in steel frame[D].Qingdao:Qingdao Techno-logical University,2011.
[13]AISC.Seismic provisions for structural steel building[S],2005.
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