偏心支撑半刚接钢框架的动力特性及抗震性能试验研究
|
摘要
偏心支撑半刚接钢框架是一种新型抗震结构体系,为研究其动力特性及抗震性能,进行了4个三层空间框架试件的试验研究。动力特性测试表明,随着梁柱节点转动刚度的降低,结构自振频率减小,阻尼比增加。循环加载试验表明,节点刚度和承载力对偏心支撑框架结构的滞回性能有显著影响,节点刚度和承载力越高,滞回性能越好,节点刚度较低的偏心支撑框架不宜用于抗震设防区;偏心支撑显著增加了半刚接钢框架的抗侧刚度,使得节点刚度对框架刚度的影响减弱,但降低了结构延性;结构的塑性变形主要来自节点域、消能梁段及梁柱节点连接件;多层偏心支撑框架的侧移变形为剪切型,层间屈服位移角较大。
Semi-rigid steel frame with eccentric brace is a new type of seismic structural system.In order to study its dynamic characteristics and seismic performance,four three-story space frame specimens were tested.Dynamic test results show that,with the reduction of rotational stiffness of beam-column connections,the natural frequency of frames decreases,and the vibration period and damping ratio increase.Cyclic loading test results show that the stiffness and strength of beam-column connections have a significant effect on the hysteretic behavior of the eccentrically braced frame.The higher the connection stiffness and strength are,the better the hysteretic behavior is.Eccentrically braced frame with lower connection stiffness should not be used in seismic zones.Eccentric brace can increase the lateral stiffness of the semi-rigid steel frame significantly,and reduce the effect of the connection stiffness on the frame stiffness.But eccentric brace can also reduce the frame ductility.The plastic deformation of structures is mainly from panel zones,links and beam-column connecters.The lateral deformation of multi-story eccentrically braced frame is shear type and the yield drift angle is relatively large.
Semi-rigid steel frame with eccentric brace is a new type of seismic structural system.In order to study its dynamic characteristics and seismic performance,four three-story space frame specimens were tested.Dynamic test results show that,with the reduction of rotational stiffness of beam-column connections,the natural frequency of frames decreases,and the vibration period and damping ratio increase.Cyclic loading test results show that the stiffness and strength of beam-column connections have a significant effect on the hysteretic behavior of the eccentrically braced frame.The higher the connection stiffness and strength are,the better the hysteretic behavior is.Eccentrically braced frame with lower connection stiffness should not be used in seismic zones.Eccentric brace can increase the lateral stiffness of the semi-rigid steel frame significantly,and reduce the effect of the connection stiffness on the frame stiffness.But eccentric brace can also reduce the frame ductility.The plastic deformation of structures is mainly from panel zones,links and beam-column connecters.The lateral deformation of multi-story eccentrically braced frame is shear type and the yield drift angle is relatively large.
引文
[1]Roeder Charles W,Popov Egor P.Eccentrically bracedsteel frames for earthquakes[J].Journal of theStructural Division,ASCE,1978,104(3):391-412.
[2]Popov Egor P,Engelhardt Michael D.Seismiceccentrically braced frames[J].Journal ofConstructional Steel Research,1988,44(10):321-354.
[3]钱稼茹,陈茂盛,张天申,等.偏心支撑钢框架拟动力地震反应试验研究[J].工程抗震,1992,14(1):15-18.(Qian Jiaru,Chen Maoshen,Zhang Tianshen,et al.Pseudodynamic test of eccentrically braced steelframes[J].Earthquake Resistant Engineering,1992,14(1):15-18.(in Chinese))
[4]李志刚,王浩,郝际平,等.偏心支撑框架的设计计算方法[J].钢结构,2004,19(3):4-7.(LiZhigang,Wang Hao,Hao Jiping,et al.The design andcalculation of eccentrically braced frames[J].SteelConstruction,2004,19(3):4-7.(in Chinese))
[5]赵宝成,顾强.偏心支撑钢框架在循环荷载作用下非线性有限元分析[J].土木工程学报,2005,38(2):27-31.(Zhao Baocheng,Gu Qiang.Nonlinearfinite element analysis for eccentrically braced steelframes under cyclic load[J].China Civil EngineeringJournal,2005,38(2):27-31.(in Chinese))
[6]石永久,熊俊,王元清,等.多层钢框架偏心支撑的抗震性能试验研究[J].建筑结构学报,2010,31(2):29-34.(SHI Yongjiu,XIONG Jun,WANGYuanqing,et al.Experimental studies on seismicperformance of multi-storey steel frame with eccentricbrace[J].Journal of Building Structures,2010,31(2):29-34.(in Chinese))
[7]Elnashai A S,Elghazouli A Y.Seismic behavior ofsemi-rigid steel frames[J].Journal of ConstructionalSteel Research,1994,29(1/2/3):149-174.
[8]Elnashai A S,Elghazouli A Y,Denesh-Ashtiani F A.Response of semi-rigid steel frames to cyclic andearthquake loads[J].Journal of StructuralEngineering,ASCE,1998,124(8):857-867.
[9]Astanesh-Als A.Seismic performance and design ofbolted steel moment resisting frames[J].EngineeringJournal,AISC,1999,36(3):105-120.
[10]郭兵,郭彦林,柳锋,等.焊接及螺栓连接钢框架的循环加载试验研究[J].建筑结构学报,2006,27(2):47-56.(GUO Bing,GUO Yanlin,LIU Feng,etal.Cyclic test of welded and bolted steel frames[J].Journal of Building Structures,2006,27(2):47-56.(in Chinese))
[11]郭兵,郭彦林,李光明.半刚接钢框架的动力特性探讨[J].建筑结构,2007,37(10):109-111.(GuoBing,Guo Yanlin,Li Guangming.Study on dynamiccharacteristics of semi-rigid steel frames[J].BuildingStructure,2007,37(10):109-111.(in Chinese))
[12]Guo Bing,Lei Shuzhong,Tang Jianmin.Analysis modeland hysteretic behavior of semi-rigid steel frames[C]//Proceedings of 12th International Conference onComputing in Civil and Building Engineering&2008International Conference on Information Technology inConstruction.Beijing:Tsinghua University,2008:32.
[13]郭兵,王磊,王颖,等.钢框架梁柱连接节点转动刚度试验研究[J].建筑结构学报,2011,32(10):82-89.(GUO Bing,WANG Lei,WANG Ying,et al.Experimental study on rotation stiffness of steel framebeam-column connections[J].Journal of BuildingStructures,2011,32(10):82-89.(in Chinese))
[14]石艳,郭兵,田海兰.偏心支撑半刚接钢框架的模态分析[J].建筑结构,2010,40(增刊1):187-190.(Shi Yan,Guo Bing,Tian Hailan.Modal analysis ofeccentrically braced semi-rigid steel frames[J].Building Structure,2010,40(Suppl.1):187-190.(inChinese))
[2]Popov Egor P,Engelhardt Michael D.Seismiceccentrically braced frames[J].Journal ofConstructional Steel Research,1988,44(10):321-354.
[3]钱稼茹,陈茂盛,张天申,等.偏心支撑钢框架拟动力地震反应试验研究[J].工程抗震,1992,14(1):15-18.(Qian Jiaru,Chen Maoshen,Zhang Tianshen,et al.Pseudodynamic test of eccentrically braced steelframes[J].Earthquake Resistant Engineering,1992,14(1):15-18.(in Chinese))
[4]李志刚,王浩,郝际平,等.偏心支撑框架的设计计算方法[J].钢结构,2004,19(3):4-7.(LiZhigang,Wang Hao,Hao Jiping,et al.The design andcalculation of eccentrically braced frames[J].SteelConstruction,2004,19(3):4-7.(in Chinese))
[5]赵宝成,顾强.偏心支撑钢框架在循环荷载作用下非线性有限元分析[J].土木工程学报,2005,38(2):27-31.(Zhao Baocheng,Gu Qiang.Nonlinearfinite element analysis for eccentrically braced steelframes under cyclic load[J].China Civil EngineeringJournal,2005,38(2):27-31.(in Chinese))
[6]石永久,熊俊,王元清,等.多层钢框架偏心支撑的抗震性能试验研究[J].建筑结构学报,2010,31(2):29-34.(SHI Yongjiu,XIONG Jun,WANGYuanqing,et al.Experimental studies on seismicperformance of multi-storey steel frame with eccentricbrace[J].Journal of Building Structures,2010,31(2):29-34.(in Chinese))
[7]Elnashai A S,Elghazouli A Y.Seismic behavior ofsemi-rigid steel frames[J].Journal of ConstructionalSteel Research,1994,29(1/2/3):149-174.
[8]Elnashai A S,Elghazouli A Y,Denesh-Ashtiani F A.Response of semi-rigid steel frames to cyclic andearthquake loads[J].Journal of StructuralEngineering,ASCE,1998,124(8):857-867.
[9]Astanesh-Als A.Seismic performance and design ofbolted steel moment resisting frames[J].EngineeringJournal,AISC,1999,36(3):105-120.
[10]郭兵,郭彦林,柳锋,等.焊接及螺栓连接钢框架的循环加载试验研究[J].建筑结构学报,2006,27(2):47-56.(GUO Bing,GUO Yanlin,LIU Feng,etal.Cyclic test of welded and bolted steel frames[J].Journal of Building Structures,2006,27(2):47-56.(in Chinese))
[11]郭兵,郭彦林,李光明.半刚接钢框架的动力特性探讨[J].建筑结构,2007,37(10):109-111.(GuoBing,Guo Yanlin,Li Guangming.Study on dynamiccharacteristics of semi-rigid steel frames[J].BuildingStructure,2007,37(10):109-111.(in Chinese))
[12]Guo Bing,Lei Shuzhong,Tang Jianmin.Analysis modeland hysteretic behavior of semi-rigid steel frames[C]//Proceedings of 12th International Conference onComputing in Civil and Building Engineering&2008International Conference on Information Technology inConstruction.Beijing:Tsinghua University,2008:32.
[13]郭兵,王磊,王颖,等.钢框架梁柱连接节点转动刚度试验研究[J].建筑结构学报,2011,32(10):82-89.(GUO Bing,WANG Lei,WANG Ying,et al.Experimental study on rotation stiffness of steel framebeam-column connections[J].Journal of BuildingStructures,2011,32(10):82-89.(in Chinese))
[14]石艳,郭兵,田海兰.偏心支撑半刚接钢框架的模态分析[J].建筑结构,2010,40(增刊1):187-190.(Shi Yan,Guo Bing,Tian Hailan.Modal analysis ofeccentrically braced semi-rigid steel frames[J].Building Structure,2010,40(Suppl.1):187-190.(inChinese))
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