凉都体育场屋盖平均风压与风振系数研究
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摘要
结合凉都体育场的建筑造型和周围环境,采用Realizablek-ε湍流模型对屋盖的平均风压进行了数值模拟,得到屋盖的平均风压分布.利用MATLAB编制了线性滤波器的自回归法(AR法)的脉动风速时程模拟程序,模拟了屋盖节点的脉动风速时程;并结合屋盖的平均风压和脉动风速时程数值模拟结果,编制了时域法风振效应分析程序,分析了牛角形屋盖的风致响应规律,得出了屋盖的位移风振系数.研究了屋面荷载、平均风速、结构阻尼比等参数对牛角形屋盖风振系数的影响,得出一定偏差范围内可忽略上述参数取值偏差对牛角形屋盖风振响应影响的结论.
Analysis of wind pressure is carried out using numerical wind tunnel for horn-shaped roof in Liangdu Stadium,and wind pressure distribution for all directions is obtained.A simulation program based on auto-regressive method is developed using MATLAB language to simulate the time-history of wind velocity of all nodes in horn-shaped roof.Based on the wind pressure coefficient obtained by numerical wind tunnel and time-history of wind velocity obtained by auto-regressive method,the wind vibration response of horn-shaped roof is analyzed using ANSYS software and the wind vibration coefficient for all wind directions is obtained.Furthermore,the effect of roof load,structural damping ratio and average velocity on the wind vibration response is analyzed.The results show that these parameters have little effect on wind vibration response of horn-shaped roof.
Analysis of wind pressure is carried out using numerical wind tunnel for horn-shaped roof in Liangdu Stadium,and wind pressure distribution for all directions is obtained.A simulation program based on auto-regressive method is developed using MATLAB language to simulate the time-history of wind velocity of all nodes in horn-shaped roof.Based on the wind pressure coefficient obtained by numerical wind tunnel and time-history of wind velocity obtained by auto-regressive method,the wind vibration response of horn-shaped roof is analyzed using ANSYS software and the wind vibration coefficient for all wind directions is obtained.Furthermore,the effect of roof load,structural damping ratio and average velocity on the wind vibration response is analyzed.The results show that these parameters have little effect on wind vibration response of horn-shaped roof.
引文
[1]朱川海,顾明.大型体育场主看台挑蓬抗风研究现状及展望[J].空间结构,2005,11(2):27-33.ZHU Chuan-hai,GU Ming.Present state and perspec-tive of wind resistance studies on grandstand cantileveredroofs of large stadiums[J].Spatial Structure,2006,11(2):27-33.
[2]潘元,张顺强,薛中兴.大跨弧形屋面风荷载特性的风洞试验研究[J].建筑结构,2007,37(10):100-102.PAN Yuan,ZHANG Shun-qiang,XUE Zhong-xin.Ex-perimental investigation on characteristics of wind loadson large arc roof[J].Building Structure,2007,37(10):100-102.
[3]马骏,周岱,李华锋,等.大跨度空间结构抗风分析的数值风洞方法[J].工程力学,2007,24(7):77-85.MA Jun,ZHOU Dai,LI Hua-feng,et al.Numericalwind tunnel technique for the wind resistance analysis oflong span spatial structures[J].Engineering Mechanics,2007,24(7):77-85.
[4]楼文娟,孙斌,卢旦,等.复杂型体悬挑屋盖风荷载风洞试验与数值模拟[J].建筑结构学报,2007,28(1):107-112.LOU Wen-juan,SUN Bin,LU Dan,et al.Wind tunneltest and numerical simulation of wind loads on complexcantilevered roofs[J].Journal of Building Structures,2007,28(1):107-112.
[5]魏德敏,边建烽.球面网壳结构风振响应时程分析[J].华南理工大学学报(自然科学版),2007,35(11):1-7.WEI De-min,BIAN Jian-feng.Time-history analyses ofwind vibration response of spherical latticed shell struc-tures[J].Journal of South China University of Technol-ogy(Natural Science Edition),2007,35(11):1-7.
[6]韩庆华,陈越,曾泌敏,等.大跨度球面网壳结构的风振系数研究[J].地震工程与工程振动,2007,27(1):38-45.HAN Qing-hua,CHEN Yue,ZENG Qin-min,et al.Anal-ysis of wind-induced vibration coefficient for long-span retic-ulated dome[J].Journal of Earthquake Engineering and En-gineering Vibration,2007,27(1):38-45.
[7]薛素铎,宋延杰,李雄彦.基于风速时程的体育场挑篷结构风振响应分析[J].地震工程与工程振动,2007,27(5):25-30.XUE Su-duo,SONG Yan-jie,LI Xiong-yan.Analysisof wind-induced responses of canopy stadium structuresbased on time-history of wind velocity[J].Journal ofEarthquake Engineering and Engineering Vibration,2007,27(5):25-30.
[8]DAVENPORT A G.Note on the distribution of the lar-gest value of a random function with application to gustloading[J].Proceedings of the Institution Civil Engi-neers,1961,28(2):187-196.
[9]丁阳,齐麟,赵奕程.考虑屋面板自振效应和流固耦合效应的大跨度空间结构风振系数[J].建筑结构学报,2008,29(5):101-601.DING Yang,QI Lin,ZHAO Yi-cheng.Wind vibrationcoefficient of long-span spatial structures with self-oscil-lating of roof and fluid-structure coupling effect[J].Journal of Building Structures,2008,29(5):101-601.
[2]潘元,张顺强,薛中兴.大跨弧形屋面风荷载特性的风洞试验研究[J].建筑结构,2007,37(10):100-102.PAN Yuan,ZHANG Shun-qiang,XUE Zhong-xin.Ex-perimental investigation on characteristics of wind loadson large arc roof[J].Building Structure,2007,37(10):100-102.
[3]马骏,周岱,李华锋,等.大跨度空间结构抗风分析的数值风洞方法[J].工程力学,2007,24(7):77-85.MA Jun,ZHOU Dai,LI Hua-feng,et al.Numericalwind tunnel technique for the wind resistance analysis oflong span spatial structures[J].Engineering Mechanics,2007,24(7):77-85.
[4]楼文娟,孙斌,卢旦,等.复杂型体悬挑屋盖风荷载风洞试验与数值模拟[J].建筑结构学报,2007,28(1):107-112.LOU Wen-juan,SUN Bin,LU Dan,et al.Wind tunneltest and numerical simulation of wind loads on complexcantilevered roofs[J].Journal of Building Structures,2007,28(1):107-112.
[5]魏德敏,边建烽.球面网壳结构风振响应时程分析[J].华南理工大学学报(自然科学版),2007,35(11):1-7.WEI De-min,BIAN Jian-feng.Time-history analyses ofwind vibration response of spherical latticed shell struc-tures[J].Journal of South China University of Technol-ogy(Natural Science Edition),2007,35(11):1-7.
[6]韩庆华,陈越,曾泌敏,等.大跨度球面网壳结构的风振系数研究[J].地震工程与工程振动,2007,27(1):38-45.HAN Qing-hua,CHEN Yue,ZENG Qin-min,et al.Anal-ysis of wind-induced vibration coefficient for long-span retic-ulated dome[J].Journal of Earthquake Engineering and En-gineering Vibration,2007,27(1):38-45.
[7]薛素铎,宋延杰,李雄彦.基于风速时程的体育场挑篷结构风振响应分析[J].地震工程与工程振动,2007,27(5):25-30.XUE Su-duo,SONG Yan-jie,LI Xiong-yan.Analysisof wind-induced responses of canopy stadium structuresbased on time-history of wind velocity[J].Journal ofEarthquake Engineering and Engineering Vibration,2007,27(5):25-30.
[8]DAVENPORT A G.Note on the distribution of the lar-gest value of a random function with application to gustloading[J].Proceedings of the Institution Civil Engi-neers,1961,28(2):187-196.
[9]丁阳,齐麟,赵奕程.考虑屋面板自振效应和流固耦合效应的大跨度空间结构风振系数[J].建筑结构学报,2008,29(5):101-601.DING Yang,QI Lin,ZHAO Yi-cheng.Wind vibrationcoefficient of long-span spatial structures with self-oscil-lating of roof and fluid-structure coupling effect[J].Journal of Building Structures,2008,29(5):101-601.
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