轮辐式大跨度张拉结构地震反应分析
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摘要
以世纪莲体育中心大跨度轮辐式张拉索膜结构为研究对象,利用有限元程序ANSYS,分别采用振型分解反应谱法和时程分析方法,计算地震作用下结构的受力性能。研究表明:结构以索膜屋盖竖向振动为主,上压环、下压环及腹杆等均参与了振动,动力特性复杂;地震作用下结构内力和位移较大,不同方向地震作用的危害主次不明显,应同时考虑一维及多维地震组合作用的影响;2种计算方法下,结构的内力和位移变化趋势基本一致,为全面了解结构的动力特性,建议采用时程分析方法。
Used the program ANSYS,finite element model of the ring-shape long-span tensile cable-membrane structure in Foshan Century Lotus Stadium is established to investigate its dynamic performance under seismic loading.The calculation methods include the response spectrum method and the time-history method.Results indicate that the structure's vibration is mainly vertical vibration.The upper compression ring,the lower compression ring,and the truss web,all the components participate in vibration,and the structure's dynamic characteristics are complex.The structure's internal force and displacement are bigger under the seismic loading,and the harming degree of the seismic loading to the structure is not different if the directions of the earthquake waves are different.So the effects of the waves' direction and their combination should be considered.Made a comparison between the two calculation methods,the structure's internal force has a similar trend,and its displacement also.For finding out the structure's dynamic characteristics completely,the time-history method should be firstly used.
Used the program ANSYS,finite element model of the ring-shape long-span tensile cable-membrane structure in Foshan Century Lotus Stadium is established to investigate its dynamic performance under seismic loading.The calculation methods include the response spectrum method and the time-history method.Results indicate that the structure's vibration is mainly vertical vibration.The upper compression ring,the lower compression ring,and the truss web,all the components participate in vibration,and the structure's dynamic characteristics are complex.The structure's internal force and displacement are bigger under the seismic loading,and the harming degree of the seismic loading to the structure is not different if the directions of the earthquake waves are different.So the effects of the waves' direction and their combination should be considered.Made a comparison between the two calculation methods,the structure's internal force has a similar trend,and its displacement also.For finding out the structure's dynamic characteristics completely,the time-history method should be firstly used.
引文
[1]CECS158:2004膜结构技术规程[S].CECS158:2004 Technical Specification for Membrane Structure[S].
[2]清华大学、西南交通大学、北京交通大学土木工程结构专家组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9.Civil and Structural Groups of Tsinghua University,Xinan Jiaotong University and Beijing Jiaotong University.Analysis on seismic damage of build-ings in the Wenchuan Earthquake[J].Journal of Building Structures,2008,29(4):1-9.
[3]叶列平,曲哲,陆新征.提高建筑结构抗地震倒塌能力的设计思想与方法[J].建筑结构学报,2008,29(4):42-50.YE Lieping,QU Zhe,LU Xinzheng.Collapse prevention of building structures:a lesson from the Wenchuan Earthquake[J].Journal of BuildingStructures,2008,29(4):42-50.
[4]孙文波,王剑文,刘永桂,等.车辐式大跨度张拉索膜结构的自振和静风作用分析[J].工业建筑,2007,37(增刊):672-675.SUN Wenbo,WANG Jianwen,LIU Yonggui,et al.Research on natual vibration frequency analysis and static wind loads for a rung-shape ttensilecable-membrane structure[J].Industrial Construction,2007,37(S):672-675.
[5]王文胜,薄燕培,胡庆卫.佛山世纪莲体育中心索膜结构[C]//第十一届空间结构学术会议论文集,南京,2005:604-609.WANG Wensheng,BO Yanpei,HU Qingwei.The cable-membrane structure of Foshan Century Lotus Stadium[C]//The 11th Conference onShell and Spatial Structures,Nanjing,2005:604-609.
[6]GB 50011-2001建筑抗震设计规范[S].GB 50011-2001 Code for Seismic Design of Buildings[S].
[7]Junchao Ren,Qilin Zhang,Liping Tong.Static and dynamic pre-tension influence analysis about Zhengzhou International Conference ExhibitionCenter[C]//The 8th Conference in the Series of Asian Pacific Conference on Shell and Spatial Structures,Beijing,China,2006:256-257.
[8]Smeby W,Kiureghian A,D.Modal combination rules for multicomponent earthquake excitation[J].Earthquake Engineering&Structural Dynam-ics,1985,24(13):1-12.
[2]清华大学、西南交通大学、北京交通大学土木工程结构专家组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9.Civil and Structural Groups of Tsinghua University,Xinan Jiaotong University and Beijing Jiaotong University.Analysis on seismic damage of build-ings in the Wenchuan Earthquake[J].Journal of Building Structures,2008,29(4):1-9.
[3]叶列平,曲哲,陆新征.提高建筑结构抗地震倒塌能力的设计思想与方法[J].建筑结构学报,2008,29(4):42-50.YE Lieping,QU Zhe,LU Xinzheng.Collapse prevention of building structures:a lesson from the Wenchuan Earthquake[J].Journal of BuildingStructures,2008,29(4):42-50.
[4]孙文波,王剑文,刘永桂,等.车辐式大跨度张拉索膜结构的自振和静风作用分析[J].工业建筑,2007,37(增刊):672-675.SUN Wenbo,WANG Jianwen,LIU Yonggui,et al.Research on natual vibration frequency analysis and static wind loads for a rung-shape ttensilecable-membrane structure[J].Industrial Construction,2007,37(S):672-675.
[5]王文胜,薄燕培,胡庆卫.佛山世纪莲体育中心索膜结构[C]//第十一届空间结构学术会议论文集,南京,2005:604-609.WANG Wensheng,BO Yanpei,HU Qingwei.The cable-membrane structure of Foshan Century Lotus Stadium[C]//The 11th Conference onShell and Spatial Structures,Nanjing,2005:604-609.
[6]GB 50011-2001建筑抗震设计规范[S].GB 50011-2001 Code for Seismic Design of Buildings[S].
[7]Junchao Ren,Qilin Zhang,Liping Tong.Static and dynamic pre-tension influence analysis about Zhengzhou International Conference ExhibitionCenter[C]//The 8th Conference in the Series of Asian Pacific Conference on Shell and Spatial Structures,Beijing,China,2006:256-257.
[8]Smeby W,Kiureghian A,D.Modal combination rules for multicomponent earthquake excitation[J].Earthquake Engineering&Structural Dynam-ics,1985,24(13):1-12.
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