大跨弦支穹顶结构非一致地震响应研究
|
摘要
对椭圆形弦支穹顶屋盖结构的动力特性和地震响应进行了有限元分析.分析中考虑了预应力大变形作用以及不同预应力水平的影响.通过结构前60阶自振频率和模态振型的对比分析,发现该弦支穹顶结构模态频率分布相当密集,以中间张弦穹顶的竖向自由振动模态为主.结构的地震响应计算结果表明,在多维多点非一致地震激励下,该弦支穹顶结构的位移响应以及环索、撑杆等重要构件的内力响应随着地震波波速的增大而减小,并逐步接近其一致地震激励下的动力响应.
The dynamic characteristics and seismic responses of a suspen-dome roof structure are analyzed,considering large deformational effects and different pre-stressed levels.The first 60 frequencies of the free vibration of the structure are studied.It is shown that the modal distribution of the semi-flexible structure is close,and the vertical vibrations of the structure are principal.Some computational results of the seismic response of the structure indicate that the displacement responses of the structure and the internal forces of the hoop cables,the brace struts and other important components under the non-uniform earthquake excitation decrease with the increase of the wave velocity,and are close to those under the uniform earthquake excitation gradually.
The dynamic characteristics and seismic responses of a suspen-dome roof structure are analyzed,considering large deformational effects and different pre-stressed levels.The first 60 frequencies of the free vibration of the structure are studied.It is shown that the modal distribution of the semi-flexible structure is close,and the vertical vibrations of the structure are principal.Some computational results of the seismic response of the structure indicate that the displacement responses of the structure and the internal forces of the hoop cables,the brace struts and other important components under the non-uniform earthquake excitation decrease with the increase of the wave velocity,and are close to those under the uniform earthquake excitation gradually.
引文
[1]葛家琪,王树,梁海彤,等.2008奥运会羽毛球馆新型弦支穹顶预应力大跨度钢结构设计研究[J].建筑结构学报,2007,28(6):10-21.GE Jia-qi,WANG Shu,LIANG Hai-tong,et al.Designand research of the large-span steel structure of the bad-minton gymnasium for 2008Olympic Games[J].Jour-nal of Building Structures,2007,28(6):10-21.
[2]蔡建国,冯健,涂展麒,等.弦支穹顶结构预应力设计及其抗震性能研究[J].四川大学学报(工程科学版),2009,41(4):70-75.CAI Jian-guo,FENG Jian,TU Zhan-qi,et al.Prestressdesign and seismic behavior of suspend-dome[J].Jour-nal of Sichuan University(Engineering Science Edition),2009,41(4):70-75.
[3]张明山,董石麟,张志宏.弦支穹顶初始预应力分布的确定及稳定性分析[J].空间结构,2004,10(2):8-12.ZHANG Ming-Shan,DONG Shi-ling,ZHANG Zhi-hong.Distribution of intial pre-stress and stabiliby analy-sis of suspen-dome[J].Spatial Structures,2004,10(2):8-12.
[4]李永梅,郭磊,张微敬.地震作用下开口Kiewitt型弦支穹顶结构的动力稳定[J].空间结构,2011,17(4):16-22.LI Yong-mei,GUO Lei,ZHANG Wei-jing.Dynamicstability of kiewitt supen-dome with a hole under earth-quakes[J].Spatial Structures,2011,17(4):16-22.
[5]张爱林,王冬梅,刘学春,等.2008奥运会羽毛球馆弦支穹顶结构模型动力特性试验及理论分析[J].建筑结构学报,2007,28(6):68-75.ZHANG Ai-lin,WANG Dong-mei,LIU Xue-chun,etal.Dynamic performance experiment and theoretical a-nalysis on the suspend-dome structure model of the bad-minton gymnasium for 2008Olympic Games[J].Jour-nal of Building Structures,2007,28(6):68-75.
[6]李忠献,林伟,丁阳.行波效应对大跨度空间网格结构地震响应的影响[J].天津大学学报,2007,40(1):1-8.LI Zhong-xian,LIN Wei,DING Yang.Influence ofwave passage effect on seismic responses of long-spanspatial lattice structures[J].Journal of Tianjin Univer-sity,2007,40(1):1-8.
[7]王冬梅.奥运羽毛球馆新型弦支穹顶结构抗震性能研究[D].北京:北京工业大学,2010.WANG Dong-mei.Seismic Behaviors Study of the O-lympic Games New Type Suspend-dome Structure[D].Beijing:Beijing University of Technology,2010.
[8]钱曙珊.大跨弦支穹顶结构的动力反应分析[J].天津大学学报,2010,43(1):26-31.QIAN Shu-shan.Analysis of dynamic response for longspan suspend-dome structure[J].Journal of Tianjin U-niversity,2010,43(1):26-31.
[9]GB50011-2010.建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[10]张爱林,张庆亮,王冬梅,等.2008奥运羽毛球馆新型预应力弦支穹顶结构动力特性及地震响应分析[J].钢结构,2008,23(6):1-6.ZHANG Ai-lin,ZHANG Qing-liang,WANG Dong-mei,et al.Research on dynamic characteristics andseismic response of the new suspend-dome structure ofbadminton gymnasium for 2008 Olympic Games[J].Steel Construction,2008,23(6):1-6.
[2]蔡建国,冯健,涂展麒,等.弦支穹顶结构预应力设计及其抗震性能研究[J].四川大学学报(工程科学版),2009,41(4):70-75.CAI Jian-guo,FENG Jian,TU Zhan-qi,et al.Prestressdesign and seismic behavior of suspend-dome[J].Jour-nal of Sichuan University(Engineering Science Edition),2009,41(4):70-75.
[3]张明山,董石麟,张志宏.弦支穹顶初始预应力分布的确定及稳定性分析[J].空间结构,2004,10(2):8-12.ZHANG Ming-Shan,DONG Shi-ling,ZHANG Zhi-hong.Distribution of intial pre-stress and stabiliby analy-sis of suspen-dome[J].Spatial Structures,2004,10(2):8-12.
[4]李永梅,郭磊,张微敬.地震作用下开口Kiewitt型弦支穹顶结构的动力稳定[J].空间结构,2011,17(4):16-22.LI Yong-mei,GUO Lei,ZHANG Wei-jing.Dynamicstability of kiewitt supen-dome with a hole under earth-quakes[J].Spatial Structures,2011,17(4):16-22.
[5]张爱林,王冬梅,刘学春,等.2008奥运会羽毛球馆弦支穹顶结构模型动力特性试验及理论分析[J].建筑结构学报,2007,28(6):68-75.ZHANG Ai-lin,WANG Dong-mei,LIU Xue-chun,etal.Dynamic performance experiment and theoretical a-nalysis on the suspend-dome structure model of the bad-minton gymnasium for 2008Olympic Games[J].Jour-nal of Building Structures,2007,28(6):68-75.
[6]李忠献,林伟,丁阳.行波效应对大跨度空间网格结构地震响应的影响[J].天津大学学报,2007,40(1):1-8.LI Zhong-xian,LIN Wei,DING Yang.Influence ofwave passage effect on seismic responses of long-spanspatial lattice structures[J].Journal of Tianjin Univer-sity,2007,40(1):1-8.
[7]王冬梅.奥运羽毛球馆新型弦支穹顶结构抗震性能研究[D].北京:北京工业大学,2010.WANG Dong-mei.Seismic Behaviors Study of the O-lympic Games New Type Suspend-dome Structure[D].Beijing:Beijing University of Technology,2010.
[8]钱曙珊.大跨弦支穹顶结构的动力反应分析[J].天津大学学报,2010,43(1):26-31.QIAN Shu-shan.Analysis of dynamic response for longspan suspend-dome structure[J].Journal of Tianjin U-niversity,2010,43(1):26-31.
[9]GB50011-2010.建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[10]张爱林,张庆亮,王冬梅,等.2008奥运羽毛球馆新型预应力弦支穹顶结构动力特性及地震响应分析[J].钢结构,2008,23(6):1-6.ZHANG Ai-lin,ZHANG Qing-liang,WANG Dong-mei,et al.Research on dynamic characteristics andseismic response of the new suspend-dome structure ofbadminton gymnasium for 2008 Olympic Games[J].Steel Construction,2008,23(6):1-6.
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