不同轴力水平下平端板组合节点抗震性能试验研究
|
摘要
设计制作了4个钢-混凝土组合梁与钢柱之间齐平式端板连接组合节点试件,完成了其在无轴力、梁端承受轴向拉力10%N by、20%N by和受轴向压力10%N by情况下受往复弯矩荷载作用的拟静力试验,研究试件的抗弯刚度、承载力、延性、滞回性能、耗能能力和破坏模式等。结果表明:梁端轴向拉力加剧了试件的变形和破坏,使其承载力、刚度及耗能能力等均有一定程度的降低,并且随着拉力的增大降低幅度增大;梁端轴向压力在前期延缓试件变形及破坏,但当试件变形较大时,压力产生的二阶效应将使试件提前破坏,试件的刚度和承载力退化较快;无论梁端存在轴向拉力还是压力,试件的延性均有明显降低,其总耗能能力下降。
Only bending moment and shear force at beam end are commonly considered in designing beam-to-column connections.However,axial force at beam end has to be taken into account in some cases.Four flush endplate composite connections between steel-concrete beam and steel column were designed,fabricated,and tested.The specimens were subjected to reverse bending under separately no axial force,10% of N by tension force,20% of N by tension force and 10% of N by compression force at beam end.The seismic behaviors,such as stiffness,bearing capacity,ductility,hysteretic behavior,energy dissipation capacity and failure modes,etc.,were studied.The results indicate that beam end axial tension force can intensify the deformation and damage of the specimens,and reduce the bearing capacity,stiffness and energy dissipation capacity and so on;however,the compressive force can delay the deformation and damage of connections in early stage,and accelerates the damage of specimen as the deformation increasing;regardless of the beam end force is axial tension or compression,the ductility of the specimens are significantly decreased,and the total energy dissipation capacity declines.
Only bending moment and shear force at beam end are commonly considered in designing beam-to-column connections.However,axial force at beam end has to be taken into account in some cases.Four flush endplate composite connections between steel-concrete beam and steel column were designed,fabricated,and tested.The specimens were subjected to reverse bending under separately no axial force,10% of N by tension force,20% of N by tension force and 10% of N by compression force at beam end.The seismic behaviors,such as stiffness,bearing capacity,ductility,hysteretic behavior,energy dissipation capacity and failure modes,etc.,were studied.The results indicate that beam end axial tension force can intensify the deformation and damage of the specimens,and reduce the bearing capacity,stiffness and energy dissipation capacity and so on;however,the compressive force can delay the deformation and damage of connections in early stage,and accelerates the damage of specimen as the deformation increasing;regardless of the beam end force is axial tension or compression,the ductility of the specimens are significantly decreased,and the total energy dissipation capacity declines.
引文
[1]JGJ 99—1998高层民用建筑钢结构技术规程[S].北京:中国建筑工业出版社,1998.(JGJ 99—1998Technical specification for steel structures of tall building[S].Beijing:China Archirecture&Building Press,1998.(in Chinese))
[2]孙国华,顾强,何若全,等.半刚接钢框架内填暗竖缝钢筋混凝土剪力墙结构滞回性能试验研究[J].建筑结构学报,2010,31(9):17-27.(SUN Guohua,GU Qiang,HE Ruoquan,et al.Experimental investigation of partially-restrained steel frames with concealed nertical slit RC infill walls[J].Journal of Building Structures,2010,31(9):17-27.(in Chinese)
[3]李国强,周向明,丁翔.高层建筑钢-混凝土混合结构模型模拟地震振动台试验研究[J].建筑结构学报,2001,22(2):2-7.(LI Guoqiang,ZHOU Xiangming,DING Xiang.Shaking table study on a model of steelconcrete hybrid structure tall building[J].Journal of Building Structures,2001,22(2):2-7.(in Chinese))
[4]Liu Aimin,Zhou Deyuan.Experimental study on seismic behavior of semi-rigid connection between steel beam and concrete wall[J].Earthquake Engineering and Engineering Vibration,2005,4(1):129-137.
[5]高山,郭兰慧,吴兆旗,张素梅.关键柱失效后组合框架抗倒塌试验研究及理论分析[J].建筑结构学报,2013,34(4):43-48.(GAO Shan,GUO Lanhui,WU Zhaoqi,ZHANG Sumei.Experimental and analytical studies on performance of composite frame under column losss[J].Journal of Building Structures,2013,34(4):43-48.(in Chinese))
[6]da Silva L S,de Lima L R O,da S Vellasco P C G,et al.Behaviour of flush end-plate beam-to-column joints under bending and axial force[J].Steel and Composite Structures,2004,4(2):77-94.
[7]de Lima L R O,da Silva L S,da S Vellasco P C G,et al.Experimental evaluation of extended endplate beam-to-column joints subjected to bending and axial force[J].Engineering Structures,2004,26(10):1333-1347.
[8]Simes da Silva L,Giro Coelho A M.An analytical evaluation of the response of steel joints under bending and axial force[J].Computers and Structures,2001,79(8):873-881.
[9]付求.弯矩、轴拉力共同作用下钢框架四角钢连接性能性能研究[D].苏州:苏州科技学院,2010:32-54.(Fu Qiu.Behaviour study of steel beam-to-column fourangle connections under bending and axial tension[D].Suzhou:Suzhou University of Science and Technology,2010:32-54.(in Chineses))
[10]邓景龙.弯矩、轴拉力共同作用下梁柱平齐端板连接的性能[D].苏州:苏州科技学院,2010:44-54.(Deng Jinglong.Performance of flush endplate connections under moment and tension force[D].Suzhou:Suzhou University of Science and Technology,2010:44-54.(in Chineses))
[11]赵金涛.刚性组合节点在负弯矩和拉力共同作用下的性能[D].哈尔滨:哈尔滨工业大学,2011:9-50.(Zhao Jintao.Performance of rigid composite joints under combination of hagging moment and tensional force[D].Harbin:Harbin Institute of Technology,2011:9-50.(in Chineses))
[12]JGJ 101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.(JGJ 101—1996Specification of testing method for earthquake resistant building[S].Beijing:China Architecture&Building Press,1997.(in Chinese))
[13]施刚,石永久,李少甫,王元清.多层钢框架半刚性端板连接的循环荷载试验研究[J].建筑结构学报2005,26(2):74-80.(SHI Gang,SHI Yongjiu,LI Shaofu,WANG Yuanqing.Cyclic tests of semirigid end-plate connections in multi-story steel frames[J].Journal of Building Structures,2005,26(2):74-80.(in Chinese))
[2]孙国华,顾强,何若全,等.半刚接钢框架内填暗竖缝钢筋混凝土剪力墙结构滞回性能试验研究[J].建筑结构学报,2010,31(9):17-27.(SUN Guohua,GU Qiang,HE Ruoquan,et al.Experimental investigation of partially-restrained steel frames with concealed nertical slit RC infill walls[J].Journal of Building Structures,2010,31(9):17-27.(in Chinese)
[3]李国强,周向明,丁翔.高层建筑钢-混凝土混合结构模型模拟地震振动台试验研究[J].建筑结构学报,2001,22(2):2-7.(LI Guoqiang,ZHOU Xiangming,DING Xiang.Shaking table study on a model of steelconcrete hybrid structure tall building[J].Journal of Building Structures,2001,22(2):2-7.(in Chinese))
[4]Liu Aimin,Zhou Deyuan.Experimental study on seismic behavior of semi-rigid connection between steel beam and concrete wall[J].Earthquake Engineering and Engineering Vibration,2005,4(1):129-137.
[5]高山,郭兰慧,吴兆旗,张素梅.关键柱失效后组合框架抗倒塌试验研究及理论分析[J].建筑结构学报,2013,34(4):43-48.(GAO Shan,GUO Lanhui,WU Zhaoqi,ZHANG Sumei.Experimental and analytical studies on performance of composite frame under column losss[J].Journal of Building Structures,2013,34(4):43-48.(in Chinese))
[6]da Silva L S,de Lima L R O,da S Vellasco P C G,et al.Behaviour of flush end-plate beam-to-column joints under bending and axial force[J].Steel and Composite Structures,2004,4(2):77-94.
[7]de Lima L R O,da Silva L S,da S Vellasco P C G,et al.Experimental evaluation of extended endplate beam-to-column joints subjected to bending and axial force[J].Engineering Structures,2004,26(10):1333-1347.
[8]Simes da Silva L,Giro Coelho A M.An analytical evaluation of the response of steel joints under bending and axial force[J].Computers and Structures,2001,79(8):873-881.
[9]付求.弯矩、轴拉力共同作用下钢框架四角钢连接性能性能研究[D].苏州:苏州科技学院,2010:32-54.(Fu Qiu.Behaviour study of steel beam-to-column fourangle connections under bending and axial tension[D].Suzhou:Suzhou University of Science and Technology,2010:32-54.(in Chineses))
[10]邓景龙.弯矩、轴拉力共同作用下梁柱平齐端板连接的性能[D].苏州:苏州科技学院,2010:44-54.(Deng Jinglong.Performance of flush endplate connections under moment and tension force[D].Suzhou:Suzhou University of Science and Technology,2010:44-54.(in Chineses))
[11]赵金涛.刚性组合节点在负弯矩和拉力共同作用下的性能[D].哈尔滨:哈尔滨工业大学,2011:9-50.(Zhao Jintao.Performance of rigid composite joints under combination of hagging moment and tensional force[D].Harbin:Harbin Institute of Technology,2011:9-50.(in Chineses))
[12]JGJ 101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.(JGJ 101—1996Specification of testing method for earthquake resistant building[S].Beijing:China Architecture&Building Press,1997.(in Chinese))
[13]施刚,石永久,李少甫,王元清.多层钢框架半刚性端板连接的循环荷载试验研究[J].建筑结构学报2005,26(2):74-80.(SHI Gang,SHI Yongjiu,LI Shaofu,WANG Yuanqing.Cyclic tests of semirigid end-plate connections in multi-story steel frames[J].Journal of Building Structures,2005,26(2):74-80.(in Chinese))
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