两层两跨方钢管混凝土框架抗震性能试验研究
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摘要
为了研究采用穿芯高强螺栓-端板节点的方钢管混凝土框架的抗震性能,对一榀两层两跨的方钢管混凝土柱-钢梁框架进行了竖向荷载和低周反复水平荷载作用下的抗震性能试验研究,观测了框架的破坏形态,得到了框架试件的荷载-位移滞回曲线、骨架曲线,分析了方钢管混凝土框架的破坏机制、滞回性能、延性、耗能能力、强度及刚度退化等力学性能。结果表明:框架试件基本实现了梁铰破坏机制,具有良好的变形性能和耗能能力,位移延性系数为5.86~6.42,等效黏滞阻尼系数达到0.454,均满足延性框架的抗震要求。框架试件的强度和刚度退化较为平缓,具有较强的抗侧移能力。
In order to investigate the seismic behavior of concrete filled square steel tube columns frame,which uses the through high strength bolts-endplate connection,an experimental study of the concrete filled square steel tube columns and steel beams frame is performed under static vertical loads and low cyclic horizontal reversed loads.The failure condition of the experimental frame is observed.The load-displacement hysteretic loops and skeleton curve of tested frame are obtained.The failure mechanism,hysteretic behavior,ductility,energy dissipation capacity,strength and stiffness degeneration are investigated.The results indicate that the beam hinge failure mechanism is achieved.The frame specimen exhibits excellent deformation capacity and energy dissipation capacity.The displacement ductility coefficient is 5.86~6.42,and the coefficient of equivalent viscous damping reachs 0.454.These meet the requirements for seismic design of ductility frame.The strength and stiffness degenerates gradually,which shows that the experimental frame has substantial lateral displacement resisting capacity.
In order to investigate the seismic behavior of concrete filled square steel tube columns frame,which uses the through high strength bolts-endplate connection,an experimental study of the concrete filled square steel tube columns and steel beams frame is performed under static vertical loads and low cyclic horizontal reversed loads.The failure condition of the experimental frame is observed.The load-displacement hysteretic loops and skeleton curve of tested frame are obtained.The failure mechanism,hysteretic behavior,ductility,energy dissipation capacity,strength and stiffness degeneration are investigated.The results indicate that the beam hinge failure mechanism is achieved.The frame specimen exhibits excellent deformation capacity and energy dissipation capacity.The displacement ductility coefficient is 5.86~6.42,and the coefficient of equivalent viscous damping reachs 0.454.These meet the requirements for seismic design of ductility frame.The strength and stiffness degenerates gradually,which shows that the experimental frame has substantial lateral displacement resisting capacity.
引文
[1]陶忠.方钢管混凝土结构的发展现状[J].建筑结构,2003,33(7):20-23.
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[3]Chen C H,Hsiao P C,Lai J W,et al.Pseudo-dynamic test of a full-scale CFT/BRB frame:part2 construction and testing[C]∥Proceedings13th World Conference on Earthquake Engineering,Vancouver,B C,Canada,2004:1-6.
[4]Herrera,Ricardo.Seismic behavior of concrete filled tube column-wide flange beam frames[D].Department of Civil and Environmental Engi-neering,Lehigh University,Bethlehem,PA.2005.
[5]王来,王铁成,齐建伟,等.方钢管混凝土框架滞回性能试验与理论研究[J].天津大学学报,2005,38(1):41-46.
[6]王文达,韩林海,陶忠.钢管混凝土柱-钢梁平面框架抗震性能的试验研究[J].建筑结构学报,2006,27(3):48-58.
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[8]何文辉,范云蕾,肖岩,等.高强螺栓端板连接钢梁-方钢管混凝土框架结构抗震性能研究[J].建筑结构学报,2009,30(4):18-29.
[9]聂建国,秦凯,肖岩.方钢管混凝土框架结构的push-over分析[J].工业建筑,2005,35(3):68-70.
[10]李斌,任利民.矩形钢管混凝土框架结构受力性能试验研究[J].工程力学,2009,26(2):103-107.
[11]王先铁,郝际平,潘阳,等.方钢管混凝土柱穿芯高强螺栓-端板节点性能研究[J].工业建筑,2008,38(3):23-26.
[12]王先铁,郝际平,王丰平.方钢管混凝土柱穿芯螺栓-端板节点抗震性能试验研究[J].建筑科学,2008,24(9):23-27.
[13]GB50017-2003钢结构设计规范[S].
[14]CECS 159:2004矩形钢管混凝土结构技术规程[S].
[15]GB 50011-2001建筑抗震设计规范[S].
[16]王先铁,新型方钢管混凝土柱-钢梁节点性能研究及抗震设计对策[D].西安:西安建筑科技大学,2007.
[17]GB/T50081-2002普通混凝土力学性能试验方法标准[S].
[18]JGJ 101-96建筑抗震试验方法规程[S].
[19]黄炳生,舒赣平.低周反复荷载下两跨两层轻钢框架抗震性能试验研究[J].地震工程与工程振动,2006,26(6):114-119.
[20]李忠献,张雪松,丁阳.翼缘削弱的型钢混凝土框架抗震性能研究[J].建筑结构学报,2007,28(4):18-24.
[2]Kawaguchi J,Morino S,Sugimoto T,et al.Experimental study on structural characteristics of portal frames consisting of square cft columns[C]∥Proceedings of the Conference Composite Construction in Steel and ConcreteⅣ,Banff,Canada,2000:725-733.
[3]Chen C H,Hsiao P C,Lai J W,et al.Pseudo-dynamic test of a full-scale CFT/BRB frame:part2 construction and testing[C]∥Proceedings13th World Conference on Earthquake Engineering,Vancouver,B C,Canada,2004:1-6.
[4]Herrera,Ricardo.Seismic behavior of concrete filled tube column-wide flange beam frames[D].Department of Civil and Environmental Engi-neering,Lehigh University,Bethlehem,PA.2005.
[5]王来,王铁成,齐建伟,等.方钢管混凝土框架滞回性能试验与理论研究[J].天津大学学报,2005,38(1):41-46.
[6]王文达,韩林海,陶忠.钢管混凝土柱-钢梁平面框架抗震性能的试验研究[J].建筑结构学报,2006,27(3):48-58.
[7]王文达,韩林海.钢管混凝土框架结构力学性能非线性有限元分析[J].建筑结构学报,2008,29(6):75-83.
[8]何文辉,范云蕾,肖岩,等.高强螺栓端板连接钢梁-方钢管混凝土框架结构抗震性能研究[J].建筑结构学报,2009,30(4):18-29.
[9]聂建国,秦凯,肖岩.方钢管混凝土框架结构的push-over分析[J].工业建筑,2005,35(3):68-70.
[10]李斌,任利民.矩形钢管混凝土框架结构受力性能试验研究[J].工程力学,2009,26(2):103-107.
[11]王先铁,郝际平,潘阳,等.方钢管混凝土柱穿芯高强螺栓-端板节点性能研究[J].工业建筑,2008,38(3):23-26.
[12]王先铁,郝际平,王丰平.方钢管混凝土柱穿芯螺栓-端板节点抗震性能试验研究[J].建筑科学,2008,24(9):23-27.
[13]GB50017-2003钢结构设计规范[S].
[14]CECS 159:2004矩形钢管混凝土结构技术规程[S].
[15]GB 50011-2001建筑抗震设计规范[S].
[16]王先铁,新型方钢管混凝土柱-钢梁节点性能研究及抗震设计对策[D].西安:西安建筑科技大学,2007.
[17]GB/T50081-2002普通混凝土力学性能试验方法标准[S].
[18]JGJ 101-96建筑抗震试验方法规程[S].
[19]黄炳生,舒赣平.低周反复荷载下两跨两层轻钢框架抗震性能试验研究[J].地震工程与工程振动,2006,26(6):114-119.
[20]李忠献,张雪松,丁阳.翼缘削弱的型钢混凝土框架抗震性能研究[J].建筑结构学报,2007,28(4):18-24.
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