半刚性连接梁柱组合节点低周反复荷载试验研究
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摘要
为研究半刚性连接梁柱组合节点的抗震性能,开展了1个纯钢框架梁柱中节点、2个组合框架梁柱中节点的低周反复荷载试验。梁柱采用平齐式高强螺栓端板连接,试验采用柱顶加载模式。对试件的试验现象、变形、应变和耗能能力等进行了分析和比较。试验结果表明,组合节点相对于纯钢节点而言,由于负弯矩作用下钢筋的抗拉作用和正弯矩作用下混凝土板的抗压作用,其受弯承载力和转动刚度均有较大程度地提高;连接弯矩-转角关系的滞回曲线饱满、稳定,具有良好的耗能能力;平端板连接梁柱组合节点在反复荷载作用下具有较高的承载力和良好的延性,抗震性能良好。
To study the seismic performance of semi-rigid composite beam-to-column joints, one bare steel cruciform joint and two composite cruciform joint specimens with flush end-plate connections were tested under cyclic loading applied at the top of the column. The experimental phenomenon, displacement, strain and energy dissipation of the specimen were analyzed and compared with each other. The experimental results indicate that compared with bare steel joints, composite joints have higher moment resistance capacity and rotational stiffness because of the tension action of rebar under negative moment and the compression action of concrete slab under positive moment. The hysteretic loops of the connection moment-rotation curves are stable and plumy, demonstrating that the composite joints with flush end plate connection have good moment resistance and rotational capacity under cyclic loading.
To study the seismic performance of semi-rigid composite beam-to-column joints, one bare steel cruciform joint and two composite cruciform joint specimens with flush end-plate connections were tested under cyclic loading applied at the top of the column. The experimental phenomenon, displacement, strain and energy dissipation of the specimen were analyzed and compared with each other. The experimental results indicate that compared with bare steel joints, composite joints have higher moment resistance capacity and rotational stiffness because of the tension action of rebar under negative moment and the compression action of concrete slab under positive moment. The hysteretic loops of the connection moment-rotation curves are stable and plumy, demonstrating that the composite joints with flush end plate connection have good moment resistance and rotational capacity under cyclic loading.
引文
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[16]王瑞,翟厚勤,王禹达.结构拟动力试验技术的试验研究[J].江苏建筑,2001,(4):18-22.(Wang Rui,Zhai Houqin,Wang Yuda.An experimental research on pseudo dynamic testing technique of structures[J].Jiangsu Construction,2001,(4):18-22.(in Chinese))
[17]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.(Zhu Bolong.Aseismic tests on structures[M].Beijing:Seismological Press,1989.(in Chinese))
[18]ECCS-Technical Committee.Study on design of steel building in earthquake zone[R].Chicago:ECCS,1986.
[19]GB50205—2001钢结构工程施工质量验收规范[S].(GB50205—2001Code for acceptance of construction quality of steel structures[S].(in Chinese))
[20]JGJ101—1996建筑抗震试验方法规程[S].JGJ101—1996Specification of testing methods for earthquake resistant building[S].(in Chinese))
[2]Da Silva Simoes L,Simoes R D,Cruz P J S.Experimental behavior of end-plate beam-to-column composite joints under monotonical loading[J].Engineering Structures,2001,23(11):1383-1409.
[3]孙飞飞,李国强,胡凌华.梁柱组合节点的试验研究新进展[J].建筑钢结构进展,2004,6(2):37-42.(Sun Feifei,Li Guoqiang,Hu Linghua.New development in experimental research on beam-to-column composite joints[J].Progress in Steel Building Structures,2004,6(2):37-42.(in Chinese))
[4]Xiao Y,Choo B S,Nethercot D A.Composite connections in steel and concrete.I.Experimental behaviour of composite beam-column connections[J].Journal of Constructional Steel Research,1994,31(1):3-30.
[5]Anderson D,Najafi A A.Performance of composite connections:major axis end plate joints[J].Journal of Constructional Steel Research,1994,31(1):31-57.
[6]郭兵.钢框架梁柱端板连接在循环荷载作用下的破坏机理及抗震设计对策[D].西安:西安建筑科技大学,2002.(Guo Bing.Collapse mechanism and design criterion of steel beam-to-column extended end-plate connections under cyclic load[D].Xi an:Xi an University Architecture and Technology,2002.(in Chinese))
[7]楼国彪.钢结构高强度螺栓外伸式端板连接抗火性能研究[D].上海:同济大学,2005.(Lou Guobiao.Behavior and design of extended endplate moment connections with high-strength bolts in fire[D].Shanghai:Tongji University,2005.(in Chinese))
[8]过轶青.端板型半刚性钢-混凝土组合节点的试验研究[D].南京:南京工业大学,2003.(Guo Yiqing.Experimental study of semi-rigid end-plate composite joints[D].Nanjing:Nanjing University of Technology,2003.(in Chinese))
[9]杨丽.半刚性组合节点在低周反复荷载作用下的性能[D].南京:南京工业大学,2004.(Yang Li.Behaviors study on semi-rigid composite joints under low cyclic loading[D].Nanjing:Nanjing University of Technology,2004.(in Chinese))
[10]高华杰.支托型半刚性组合节点的试验研究[D].南京:南京工业大学,2002.(Gao Huajie.Experimental study on semi-rigid composite joints with seating cleat connections[D].Nanjing:Nanjing University of Technology,2002.(in Chinese))
[11]管可俭.钢结构住宅抗侧力体系试验研究与非线性分析[D].武汉:武汉理工大学,2003.(Guan Kejian.Experimental research and nonlinear analysis on the lateral resistant system of steel residential building[D].Wuhan:Wuhan University of Technology,2003.(in Chinese))
[12]王静峰.竖向荷载作用下半刚性连接组合框架的实用设计方法[D].上海:同济大学,2005.(Wang Jingfeng.The practical design approach of semi-rigidly connected composite frames under vertical loads[D].Shanghai:Tongji University,2005.(in Chinese))
[13]陈瑜,董世民,李丽萍.《建筑抗震试验方法规程》中的拟动力试验简介[J].建筑科学,1995,11(2):52-57.(Chen Yu,Dong Shimin,Li Liping.Introduction to the pseudo dynamic tests in the‘Specification of testing methods for earthquake resistant building’[J].Building Science,1995,11(2):52-572.(in Chinese))
[14]姚振纲,刘祖华.建筑结构试验[M].上海:同济大学出版社,1996.(Yao Zhengang,Liu Zuhua.Tests on building structures[M].Shanghai:Tongji University Press,1996.(in Chinese))
[15]田石柱,赵桐.抗震拟动力试验技术研究[J].世界地震工程,2001,17(4):60-66.(Tian Shizhu,Zhao Tong.Research on seismic pseudo dynamic test[J].World Information on Earthquake Engineering,2001,17(4):60-66.(in Chinese))
[16]王瑞,翟厚勤,王禹达.结构拟动力试验技术的试验研究[J].江苏建筑,2001,(4):18-22.(Wang Rui,Zhai Houqin,Wang Yuda.An experimental research on pseudo dynamic testing technique of structures[J].Jiangsu Construction,2001,(4):18-22.(in Chinese))
[17]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.(Zhu Bolong.Aseismic tests on structures[M].Beijing:Seismological Press,1989.(in Chinese))
[18]ECCS-Technical Committee.Study on design of steel building in earthquake zone[R].Chicago:ECCS,1986.
[19]GB50205—2001钢结构工程施工质量验收规范[S].(GB50205—2001Code for acceptance of construction quality of steel structures[S].(in Chinese))
[20]JGJ101—1996建筑抗震试验方法规程[S].JGJ101—1996Specification of testing methods for earthquake resistant building[S].(in Chinese))
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