球面网壳结构风振响应时程分析
|
摘要
利用线性自回归滤波器法(AR法),编制了大跨空间结构的风速时程模拟程序,通过算例验证了该方法对大跨空间结构具有的良好适用性.将模拟出的风荷载作用于单层球面网壳,用有限元程序ANSYS进行了网壳结构的风振响应时程分析.通过时程分析结果与频域法的相应计算结果的对比,发现时程分析法与频域法的计算结果基本吻合,时程响应的峰值远大于静风响应,频域法的风振系数略大于时程法的结果.
In this paper,according to the principle of linear auto-regressive model(AR Model),a time-history simulation program of wind velocity is proposed for large-span spatial structures,and the feasibility of the proposed program is verified by a practical example.The simulated wind vibration loads are then applied to the time-history analysis of wind vibration response of single-layer spherical latticed shells by the finite-element program ANSYS.Through comparing the results obtained by the time-history analysis with the computational ones obtained by the frequency-domain method,it is found that the results of the time-history analysis are agreement with ones of the frequency-domain analysis on the whole.But the peak values of the time-history response are far exceed those of the static-wind response,and the wind-vibration coefficient of the frequency-domain method is bigger slightly that of the time-domain method.
In this paper,according to the principle of linear auto-regressive model(AR Model),a time-history simulation program of wind velocity is proposed for large-span spatial structures,and the feasibility of the proposed program is verified by a practical example.The simulated wind vibration loads are then applied to the time-history analysis of wind vibration response of single-layer spherical latticed shells by the finite-element program ANSYS.Through comparing the results obtained by the time-history analysis with the computational ones obtained by the frequency-domain method,it is found that the results of the time-history analysis are agreement with ones of the frequency-domain analysis on the whole.But the peak values of the time-history response are far exceed those of the static-wind response,and the wind-vibration coefficient of the frequency-domain method is bigger slightly that of the time-domain method.
引文
[1]向阳,沈士钊,李君.薄膜结构的非线性风振响应分析[J].建筑结构学报,1999,20(6):38-46.Xiang Yang,Shen Shi-zhao,Li Jun.Nonlinear wind vibra-tion response analysis of membrane structure[J].Journalof Architectural Structure,1999,20(6):38-46.
[2]李元齐,董石麟.大跨度空间结构风荷载模拟技术研究及程序编制[J].空间结构,2001,7(3):3-11.Li Yuan-qi,Dong Shi-lin.Random wind load simulationand computer program for large-span spatial structures[J].Spatial Structrues,2001,7(3):3-11.
[3]董军,邓洪州,刘学利.高层建筑脉动风荷载时程模拟的AR模型方法[J].南京建筑工程学院学报,2000,53(2):20-25.Dong Jun,Deng Hong-zhou,Liu Xue-li.AR model methodfor time-history imitation of pulse wind load acting onhigh-rise buildings[J].Journal of Nanjing Architecturaland Civil Engineering Institute,2000,53(2):20-25.
[4]Gusella V,Materazzi A L.Non-gaussian along wind re-sponse analysis in time and frequency domains[J].En-gineering Structures,2000,22(1):49-57.
[5]Uemarsu Yasushi,Yamada,MOTOhiko,et al.Wind engi-neering and induced dynamic behavior of a sing-layer la-tticed dome[J].Journal of Wind Engineering and Indus-trial Aerodynamics,1997,66(3):227-248.
[6]王之宏.风荷载的模拟研究[J].建筑结构学报,1994,15(1):44-50.Wang Zhi-hong.Simulation of wind loading[J].Journalof Architectural Structure,1994,15(1):44-50.
[7]曾宪武,韩大建.大跨度桥梁风场模拟方法对比研究[J].地震工程与工程振动,2004,24(1):135-140.Zeng Xian-wu,Han Da-jian.A comparative study on sim-ulation methods for wind field of long-span bridges[J].Earthquake Engineering and Engineering Vibration,2004,24(1):135-140.
[8]边建烽,魏德敏.大跨空间结构风速时程的数值模拟理论[J].暨南大学学报:自然科学版,2005,26(1):87-91.Bian Jian-feng,Wei De-min.Wind velocity time-historynumerical simulation theories in long-span spatial struc-tures[J].Journal of Jinan University:Natural Science,2005,26(1):87-91
[9]王珩.体育场大跨网架屋盖结构的风振响应和风振系数研究[D].杭州:浙江大学建筑工程学院,2003.
[10]王焕定.有限单元法及计算程序[M].北京:中国建筑工业出版社,1997.
[11]边建烽.单层网壳结构风振响应的理论分析[D].广州:华南理工大学建筑学院,2005.
[2]李元齐,董石麟.大跨度空间结构风荷载模拟技术研究及程序编制[J].空间结构,2001,7(3):3-11.Li Yuan-qi,Dong Shi-lin.Random wind load simulationand computer program for large-span spatial structures[J].Spatial Structrues,2001,7(3):3-11.
[3]董军,邓洪州,刘学利.高层建筑脉动风荷载时程模拟的AR模型方法[J].南京建筑工程学院学报,2000,53(2):20-25.Dong Jun,Deng Hong-zhou,Liu Xue-li.AR model methodfor time-history imitation of pulse wind load acting onhigh-rise buildings[J].Journal of Nanjing Architecturaland Civil Engineering Institute,2000,53(2):20-25.
[4]Gusella V,Materazzi A L.Non-gaussian along wind re-sponse analysis in time and frequency domains[J].En-gineering Structures,2000,22(1):49-57.
[5]Uemarsu Yasushi,Yamada,MOTOhiko,et al.Wind engi-neering and induced dynamic behavior of a sing-layer la-tticed dome[J].Journal of Wind Engineering and Indus-trial Aerodynamics,1997,66(3):227-248.
[6]王之宏.风荷载的模拟研究[J].建筑结构学报,1994,15(1):44-50.Wang Zhi-hong.Simulation of wind loading[J].Journalof Architectural Structure,1994,15(1):44-50.
[7]曾宪武,韩大建.大跨度桥梁风场模拟方法对比研究[J].地震工程与工程振动,2004,24(1):135-140.Zeng Xian-wu,Han Da-jian.A comparative study on sim-ulation methods for wind field of long-span bridges[J].Earthquake Engineering and Engineering Vibration,2004,24(1):135-140.
[8]边建烽,魏德敏.大跨空间结构风速时程的数值模拟理论[J].暨南大学学报:自然科学版,2005,26(1):87-91.Bian Jian-feng,Wei De-min.Wind velocity time-historynumerical simulation theories in long-span spatial struc-tures[J].Journal of Jinan University:Natural Science,2005,26(1):87-91
[9]王珩.体育场大跨网架屋盖结构的风振响应和风振系数研究[D].杭州:浙江大学建筑工程学院,2003.
[10]王焕定.有限单元法及计算程序[M].北京:中国建筑工业出版社,1997.
[11]边建烽.单层网壳结构风振响应的理论分析[D].广州:华南理工大学建筑学院,2005.
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