节点半刚性对钢交错桁架抗震性能影响分析
|
摘要
节点刚度对钢结构的抗震性能有很大的影响。基于模态推覆分析MPA方法,初步探讨了节点半刚性对钢交错桁架在大震作用下抗震性能的影响。运用通用有限元软件SAP2000建立了平面模型,并修改节点塑性铰的属性和初始刚度来模拟钢交错桁架的半刚性节点,对比发现采用了半刚性节点的钢交错桁架,相对于完全刚接的情况,其基本自振周期、楼层侧移和层间位移角明显增大,塑性铰分布较为分散,数量减少,在大震下的耗能能力明显改善。
Joint stiffness has a significant influence on the seismic performance of steel structures.Based on the MPA(Modal Pushover Analysis)method,the effect of semi-rigid connections on the seismic performance of staggered steel trusses under severe earthquakes is discussed in this paper.By using the finite element software SAP2000,a numerical model is established.The analysis results show that comparing to fully rigid connections,staggered steel truss with semi-rigid connections has a much larger natural vibration period,bigger lateral displacement and bigger inter-story drifts,while the number of plastic hinges is reduced and the distribution is more dispersed,which shows that the energy dissipation capacity of semi-rigidly staggered steel truss is improved significantly under severe earthquakes.
Joint stiffness has a significant influence on the seismic performance of steel structures.Based on the MPA(Modal Pushover Analysis)method,the effect of semi-rigid connections on the seismic performance of staggered steel trusses under severe earthquakes is discussed in this paper.By using the finite element software SAP2000,a numerical model is established.The analysis results show that comparing to fully rigid connections,staggered steel truss with semi-rigid connections has a much larger natural vibration period,bigger lateral displacement and bigger inter-story drifts,while the number of plastic hinges is reduced and the distribution is more dispersed,which shows that the energy dissipation capacity of semi-rigidly staggered steel truss is improved significantly under severe earthquakes.
引文
[1]完海鹰,王建国,王秀喜.半刚性连接钢框架的拟动力试验研究[J].实验力学,2009,24(4):299-306Wan Haiying,Wang Jianguo,Wang Xiuxi Pseudo-dynamic test of steel frames with semi-rigid connections[J].Journal of Experimental Mechanics,2009,24(4):299-306(in Chinese)
[2]陈惠发.钢框架稳定设计[M].周绥平,译.上海:世界图书出版公司,1999:264-418Chen Wai-Fah.Stability design of steel frames[M].Zhou Suiping,Translation.Shanghai:World Publishing Corporation,1999:264-418(in Chinese)
[3]王燕,李军华,厉见芬.半刚性梁柱节点连接的初始刚度和结构内力分析[J].工程力学,2003,20(6):65-69Wang Yan,Li Junhua,Li Jianfen.Initial stiffness of semi-rigid beam-to-column connections and structural internal force analysis[J].Engineering Mechanics,2003,20(6):65-69(in Chinese)
[4]顾正维,孙炳南,潘海勤.不同排列伸展螺栓端板半刚性节点的三维非线性分析[J].钢结构,2003,18(6):54-56,70Gu Zhengwei,Sun Bingnan,Pan Haiqin.Nonlinear analysis ofsemi-rigid connection of different array of extended bolted end-plate[J].Steel Construction,2003,18(6):54-56,70(in Chinese)
[5]郭成喜.半刚性钢框架的内力性态分析[J].建筑结构,2002,32(5):3-6,14Guo Chengxi.Characters of internal forces in semi-rigid steel frames[J].Building Structure,2002,32(5):3-6,14(in Chinese)
[6]陈爱国,顾强,苏明周,等.腹板双角钢梁柱连接循环荷载实验研究[J].建筑结构学报,2003,24(6):67-71Chen Aiguo,Gu Qiang,Su Mingzhou,et al.Cyclic behavior of double angle beam-to-column connections[J].Journal of Building Structures,2003,24(6):67-71(in Chinese)
[7]ATC-40Seismic Evaluation and Retrofit of Concrete Buildings Volume1[S].California:Applied Technology Council,1996
[8]Chopra A K,Geol R K.A modal pushover analysis procedure for estimating seismic demands for unsymmetric-plan buildings[J].Earthquake Engineering&Structural Dynamics,2004,33(8):903-927
[9]Chopra A K,Geol R K,Chintanapakdee C.Evaluation of a modified MPA procedure assuming higher modes as elastic to estimate seismic demands[J].Earthquake Spectra,2004,20(3):757-778
[10]马千里,叶列平,陆新征.MPA法与Pushover法的准确性对比[J].华南理工大学学报:自然科学版,2008,36(11):121-128Ma Qianli,Ye Lieping,Lu Xinzheng.Comparative evaluation of correctness between MPA and pushover analysis[J].Journal of South China University of Technology:Natural Science Edition,2008,36(11):121-128(in Chinese)
[11]周定松,吕西林.延性需求谱在基于性能的抗震设计中的应用[J].地震工程与工程振动,2004,24(1):30-38Zhou Dingsong,Lv Xilin.Application of ductility demand spectra in performance-based seismic design[J].Earthquake Engineering and Engineering Vibration,2004,24(1):30-38(in Chinese)
[12]黄飞.交错桁架结构体系应用及抗震性能研究[D].天津:天津大学,2006Huang Fei.Study on application and anti-seismic performance of staggered truss system[D].Tianjin:Tianjin University,2006(in Chinese)
[13]北京金土木软件技术有限公司,中国建筑标准设计研究院.SAP2000中文版使用指南[M].北京:人民交通出版社,2006
[14]王元清,张一舟,施刚,等.半刚性端板连接多层钢框架的Pushover分析[J].湖南大学学报:自然科学版,2009,36(11):10-15Wang Yuanqing,Zhang Yizhou.Shi Gang,et al.Pushover analysis of multistory steel frame with semi-rigid end-plate connections[J].Journal of Hunan University:Natural Science Edition,2009,36(11):10-15(in Chinese)
[15]张一舟.半刚性多层钢框架受力性能和设计方法研究[D].北京:清华大学,2006Zhang Yizhou.Study on the behavior and design method of multistory semi-rigid steel frame[D].Beijing:Tsinghua University,2006(in Chinese)
[16]吕西林,周定松.考虑场地类别与设计分组的延性需求谱和弹塑性位移反应谱[J].地震工程与工程振动,2004,24(1):39-48Lv Xilin,Zhou Dingsong.Ductility demand spectra and inelastic displacement spectra considering soil conditions anddesign characteristic periods[J].Earthquake Engineering and Engineering Vibration,2004,24(1):39-48(in Chinese)
[17]周绪红,龚焮,聂少锋,等.低周反复荷载作用下交错桁架钢结构抗震性能试验研究与分析[J].建筑结构学报,2009,30(1):133-141Zhou Xuhong,Gong Xin,Nie Shaofeng,et al.Experimental study and analysis on seismic behavior of steel staggered truss framing system under cyclic loading[J].Journal of Building Structures,2009,30(1):133-141(in Chinese)
[18]冉红东.钢交错桁架体系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,2008Ran Hongdong.Collapse mechanism and design criterion of steel staggered truss system under cyclic load[D].Xi′an:Xi′an University of Architecture and Technology,2008(in Chinese)
[19]冉红东,苏明周,李虎,等.循环荷载作用下空腹式交错桁架钢结构抗震性能试验研究[J].建筑结构学报,2008,29(6):91-98Ran Hongdong,Su Mingzhou,Li Hu,et al.Experimental study on seismic behavior of vierendeel staggered truss steel structures under cyclic load[J].Journal of Building Structures,2008,29(6):91-98(in Chinese)
[2]陈惠发.钢框架稳定设计[M].周绥平,译.上海:世界图书出版公司,1999:264-418Chen Wai-Fah.Stability design of steel frames[M].Zhou Suiping,Translation.Shanghai:World Publishing Corporation,1999:264-418(in Chinese)
[3]王燕,李军华,厉见芬.半刚性梁柱节点连接的初始刚度和结构内力分析[J].工程力学,2003,20(6):65-69Wang Yan,Li Junhua,Li Jianfen.Initial stiffness of semi-rigid beam-to-column connections and structural internal force analysis[J].Engineering Mechanics,2003,20(6):65-69(in Chinese)
[4]顾正维,孙炳南,潘海勤.不同排列伸展螺栓端板半刚性节点的三维非线性分析[J].钢结构,2003,18(6):54-56,70Gu Zhengwei,Sun Bingnan,Pan Haiqin.Nonlinear analysis ofsemi-rigid connection of different array of extended bolted end-plate[J].Steel Construction,2003,18(6):54-56,70(in Chinese)
[5]郭成喜.半刚性钢框架的内力性态分析[J].建筑结构,2002,32(5):3-6,14Guo Chengxi.Characters of internal forces in semi-rigid steel frames[J].Building Structure,2002,32(5):3-6,14(in Chinese)
[6]陈爱国,顾强,苏明周,等.腹板双角钢梁柱连接循环荷载实验研究[J].建筑结构学报,2003,24(6):67-71Chen Aiguo,Gu Qiang,Su Mingzhou,et al.Cyclic behavior of double angle beam-to-column connections[J].Journal of Building Structures,2003,24(6):67-71(in Chinese)
[7]ATC-40Seismic Evaluation and Retrofit of Concrete Buildings Volume1[S].California:Applied Technology Council,1996
[8]Chopra A K,Geol R K.A modal pushover analysis procedure for estimating seismic demands for unsymmetric-plan buildings[J].Earthquake Engineering&Structural Dynamics,2004,33(8):903-927
[9]Chopra A K,Geol R K,Chintanapakdee C.Evaluation of a modified MPA procedure assuming higher modes as elastic to estimate seismic demands[J].Earthquake Spectra,2004,20(3):757-778
[10]马千里,叶列平,陆新征.MPA法与Pushover法的准确性对比[J].华南理工大学学报:自然科学版,2008,36(11):121-128Ma Qianli,Ye Lieping,Lu Xinzheng.Comparative evaluation of correctness between MPA and pushover analysis[J].Journal of South China University of Technology:Natural Science Edition,2008,36(11):121-128(in Chinese)
[11]周定松,吕西林.延性需求谱在基于性能的抗震设计中的应用[J].地震工程与工程振动,2004,24(1):30-38Zhou Dingsong,Lv Xilin.Application of ductility demand spectra in performance-based seismic design[J].Earthquake Engineering and Engineering Vibration,2004,24(1):30-38(in Chinese)
[12]黄飞.交错桁架结构体系应用及抗震性能研究[D].天津:天津大学,2006Huang Fei.Study on application and anti-seismic performance of staggered truss system[D].Tianjin:Tianjin University,2006(in Chinese)
[13]北京金土木软件技术有限公司,中国建筑标准设计研究院.SAP2000中文版使用指南[M].北京:人民交通出版社,2006
[14]王元清,张一舟,施刚,等.半刚性端板连接多层钢框架的Pushover分析[J].湖南大学学报:自然科学版,2009,36(11):10-15Wang Yuanqing,Zhang Yizhou.Shi Gang,et al.Pushover analysis of multistory steel frame with semi-rigid end-plate connections[J].Journal of Hunan University:Natural Science Edition,2009,36(11):10-15(in Chinese)
[15]张一舟.半刚性多层钢框架受力性能和设计方法研究[D].北京:清华大学,2006Zhang Yizhou.Study on the behavior and design method of multistory semi-rigid steel frame[D].Beijing:Tsinghua University,2006(in Chinese)
[16]吕西林,周定松.考虑场地类别与设计分组的延性需求谱和弹塑性位移反应谱[J].地震工程与工程振动,2004,24(1):39-48Lv Xilin,Zhou Dingsong.Ductility demand spectra and inelastic displacement spectra considering soil conditions anddesign characteristic periods[J].Earthquake Engineering and Engineering Vibration,2004,24(1):39-48(in Chinese)
[17]周绪红,龚焮,聂少锋,等.低周反复荷载作用下交错桁架钢结构抗震性能试验研究与分析[J].建筑结构学报,2009,30(1):133-141Zhou Xuhong,Gong Xin,Nie Shaofeng,et al.Experimental study and analysis on seismic behavior of steel staggered truss framing system under cyclic loading[J].Journal of Building Structures,2009,30(1):133-141(in Chinese)
[18]冉红东.钢交错桁架体系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,2008Ran Hongdong.Collapse mechanism and design criterion of steel staggered truss system under cyclic load[D].Xi′an:Xi′an University of Architecture and Technology,2008(in Chinese)
[19]冉红东,苏明周,李虎,等.循环荷载作用下空腹式交错桁架钢结构抗震性能试验研究[J].建筑结构学报,2008,29(6):91-98Ran Hongdong,Su Mingzhou,Li Hu,et al.Experimental study on seismic behavior of vierendeel staggered truss steel structures under cyclic load[J].Journal of Building Structures,2008,29(6):91-98(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