节点性能对分层装配支撑钢框架抗震性能的影响研究
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摘要
该文以分层装配梁贯通式支撑钢框架为对象,通过引入节点弯矩-转角本构模型的数值模拟方法,研究节点刚度和承载力设置对结构体系抗震性能的影响。分析结果表明,节点刚度对结构自振频率影响不大,但影响结构在静力推覆下的失效演进模式和地震作用下的滞回特性,节点刚度小于4倍相邻柱线刚度时,结构不能满足罕遇地震下的层间位移角限值要求;节点承载力对静力推覆下结构的极限承载力影响很小,对罕遇地震作用下的结构滞回特性和层间位移分布几乎没有影响。
This paper presents a research on floor-by-floor assembled steel beam-through braced frames. By introducing a numerical simulation method of the moment-rotation constitutive model of joints, the influence of the joint rigidity and strength on the seismic performance of the structure system is studied. The analysis results indicate that the impact of the joint rigidity on the structure's frequency of vibration is small. Structures with different joint rigidities have different failure modes under the static pushover. The hysteretic behavior of the structure is closely related with the rigidity of joints. When the rigidity of joints is smaller than four times of the line rigidity of columns, the structure's maximum story drift ratio cannot satisfy the limit under severe earthquakes required by the present Chinese codes. Meanwhile, the strength of the joints slightly affects the structure ultimate strength under the static pushover and has little influence on the hysteretic behavior and story drift distribution of the structure under severe earthquakes.
This paper presents a research on floor-by-floor assembled steel beam-through braced frames. By introducing a numerical simulation method of the moment-rotation constitutive model of joints, the influence of the joint rigidity and strength on the seismic performance of the structure system is studied. The analysis results indicate that the impact of the joint rigidity on the structure's frequency of vibration is small. Structures with different joint rigidities have different failure modes under the static pushover. The hysteretic behavior of the structure is closely related with the rigidity of joints. When the rigidity of joints is smaller than four times of the line rigidity of columns, the structure's maximum story drift ratio cannot satisfy the limit under severe earthquakes required by the present Chinese codes. Meanwhile, the strength of the joints slightly affects the structure ultimate strength under the static pushover and has little influence on the hysteretic behavior and story drift distribution of the structure under severe earthquakes.
引文
[1]王伟,陈以一,余亚超,等.分层装配式支撑钢结构工业化建筑体系[J].建筑结构,2012,42(10):48―52.Wang Wei,Chen Yiyi,Yu Yachao,et al.Floor-by-floor assembled steel braced structures for prefabricated buildings[J].Building Structure,2012,42(10):48―52.(in Chinese)
[2]Wang W,Zhou Q,Chen Y,et al.Experimental and numerical investigation on full-scale tension-only concentrically braced steel beam-through frames[J].Journal of Constructional Steel Research,2013,80:369―385.
[3]周青,王伟,陈以一,等.分层装配式支撑钢结构工业化建筑体系抗震性能试验研究[J].建筑结构,2012,42(10):61―64.Zhou Qing,Wang Wei,Chen Yiyi,et al.Experimental research on seismic performance of floor-by-floor assembled steel braced structures for prefabricated buildings[J].Building Structure,2012,42(10):61―64.(in Chinese)
[4]刘浩晋,王伟,陈以一,等.分层装配式支撑钢结构梁贯通式节点研制与性能试验[J].建筑结构,2012,42(10):53―56.Liu Haojin,Wang Wei,Chen Yiyi,et al.Development and behaviour testing of beam through connections of floor-by-floor assembled steel braced structures[J].Building Structure,2012,42(10):53―56.(in Chinese)
[5]邹超,王伟.梁贯通式支撑钢结构节点耗能模拟等效构件法[J].建筑结构,2015,45(2):10―14.Zou Chao,Wang Wei.Equivalent component method for energy dissipation modelling of joint in steel beam-through braced structures[J].Building Structure,2015,45(2):10―14.(in Chinese)
[6]Hadianfard M A,Razani R.Effects of semi-rigid behavior of connections in the reliability of steel frames[J].Structural Safety,2003,25(2):123―138.
[7]Jones S W,Kirby P A,Nethercot D A.Effect of semi-rigid connections on steel column strength[J].Journal of Constructional Steel Research,1980,1(1):38―46.
[8]Moncarz P D,Gerstl K H.Steel frames with nonlinear connections[J].Journal of the Structural Division,1981,107(8):1427―1441.
[9]李国强,沈祖炎.半刚性连接钢框架弹塑性地震反应分析[J].同济大学学报:自然科学版,1992(2):123―128.Li Guoqiang,Shen Zuyan.Analysis of elasto-plastic seismic responses of semi-rigidly connected steel frames[J].Journal of Tongji University,1992(2):123―128.(in Chinese)
[10]完海鹰,王建国,王秀喜.地震荷载下双腹板-顶底角钢连接半刚接钢框架的动力特性研究[J].工程力学,2011,28(4):145―150.Wan Haiying,Wang Jianguo,Wang Xiuxi.Study on dynamic characteristic of the steel frames with semi-rigid connection of top and seat angles with double web angle[J].Engineering Mechanics,2011,28(4):145―150.(in Chinese)
[11]沈蒲生,胡习兵,舒兴平.半刚性连接钢框架稳定性的刚重比控制方法[J].工程力学,2006,23(11):80―84.Shen Pusheng,Hu Xibing,Shu Xingping.Control method of stability of steel frames with semi-rigid connections by its ratio of rigidity-to-gravity[J].Engineering Mechanics,2006,23(11):80―84.(in Chinese)
[12]Eurocode 3,Design of steel structures,part 1-8:design of joint[S].Brussels:European Committee for Standardization,2005.
[13]刘浩晋.全螺栓现场连接梁贯通式节点性能研究[D].上海:同济大学,2012.Liu Haojin.Research of the behaviour of beam through spot full-bolted connections[D].Shanghai:Tongji University,2012.(in Chinese)
[14]张一舟,王元清,施刚,等.节点刚度对多层钢框架静力性能的影响分析[J].青岛理工大学学报,2006,27(3):29―33.Zhang Yizhou,Wang Yuanqing,Shi Gang,et al.The effect of joint stiffness on static capability of multi-story steel frames[J].Journal of Qingdao Technological University,2006,27(3):29―33.(in Chinese)
[15]刘大伟,王伟,马场峰雄,等.分层装配式钢结构体系新型支撑研制与性能试验[J].建筑结构,2012,42(10):57―60.Liu Dawei,Wang Wei,Baba Mineo,et al.Development and behavior testing of innovative braces of floor-by-floor assembled steel structures[J].Building Structure,2012,42(10):57―60.(in Chinese)
[2]Wang W,Zhou Q,Chen Y,et al.Experimental and numerical investigation on full-scale tension-only concentrically braced steel beam-through frames[J].Journal of Constructional Steel Research,2013,80:369―385.
[3]周青,王伟,陈以一,等.分层装配式支撑钢结构工业化建筑体系抗震性能试验研究[J].建筑结构,2012,42(10):61―64.Zhou Qing,Wang Wei,Chen Yiyi,et al.Experimental research on seismic performance of floor-by-floor assembled steel braced structures for prefabricated buildings[J].Building Structure,2012,42(10):61―64.(in Chinese)
[4]刘浩晋,王伟,陈以一,等.分层装配式支撑钢结构梁贯通式节点研制与性能试验[J].建筑结构,2012,42(10):53―56.Liu Haojin,Wang Wei,Chen Yiyi,et al.Development and behaviour testing of beam through connections of floor-by-floor assembled steel braced structures[J].Building Structure,2012,42(10):53―56.(in Chinese)
[5]邹超,王伟.梁贯通式支撑钢结构节点耗能模拟等效构件法[J].建筑结构,2015,45(2):10―14.Zou Chao,Wang Wei.Equivalent component method for energy dissipation modelling of joint in steel beam-through braced structures[J].Building Structure,2015,45(2):10―14.(in Chinese)
[6]Hadianfard M A,Razani R.Effects of semi-rigid behavior of connections in the reliability of steel frames[J].Structural Safety,2003,25(2):123―138.
[7]Jones S W,Kirby P A,Nethercot D A.Effect of semi-rigid connections on steel column strength[J].Journal of Constructional Steel Research,1980,1(1):38―46.
[8]Moncarz P D,Gerstl K H.Steel frames with nonlinear connections[J].Journal of the Structural Division,1981,107(8):1427―1441.
[9]李国强,沈祖炎.半刚性连接钢框架弹塑性地震反应分析[J].同济大学学报:自然科学版,1992(2):123―128.Li Guoqiang,Shen Zuyan.Analysis of elasto-plastic seismic responses of semi-rigidly connected steel frames[J].Journal of Tongji University,1992(2):123―128.(in Chinese)
[10]完海鹰,王建国,王秀喜.地震荷载下双腹板-顶底角钢连接半刚接钢框架的动力特性研究[J].工程力学,2011,28(4):145―150.Wan Haiying,Wang Jianguo,Wang Xiuxi.Study on dynamic characteristic of the steel frames with semi-rigid connection of top and seat angles with double web angle[J].Engineering Mechanics,2011,28(4):145―150.(in Chinese)
[11]沈蒲生,胡习兵,舒兴平.半刚性连接钢框架稳定性的刚重比控制方法[J].工程力学,2006,23(11):80―84.Shen Pusheng,Hu Xibing,Shu Xingping.Control method of stability of steel frames with semi-rigid connections by its ratio of rigidity-to-gravity[J].Engineering Mechanics,2006,23(11):80―84.(in Chinese)
[12]Eurocode 3,Design of steel structures,part 1-8:design of joint[S].Brussels:European Committee for Standardization,2005.
[13]刘浩晋.全螺栓现场连接梁贯通式节点性能研究[D].上海:同济大学,2012.Liu Haojin.Research of the behaviour of beam through spot full-bolted connections[D].Shanghai:Tongji University,2012.(in Chinese)
[14]张一舟,王元清,施刚,等.节点刚度对多层钢框架静力性能的影响分析[J].青岛理工大学学报,2006,27(3):29―33.Zhang Yizhou,Wang Yuanqing,Shi Gang,et al.The effect of joint stiffness on static capability of multi-story steel frames[J].Journal of Qingdao Technological University,2006,27(3):29―33.(in Chinese)
[15]刘大伟,王伟,马场峰雄,等.分层装配式钢结构体系新型支撑研制与性能试验[J].建筑结构,2012,42(10):57―60.Liu Dawei,Wang Wei,Baba Mineo,et al.Development and behavior testing of innovative braces of floor-by-floor assembled steel structures[J].Building Structure,2012,42(10):57―60.(in Chinese)
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