北京A380机库风洞试验及风振响应分析
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摘要
北京A380机库的抗风设计是结构设计中一项重要内容。通过对该机库风洞试验结果的分析,得到在不同工况、不同风向角下机库屋盖上、下表面和墙体内、外表面的风压分布特点,以及低矮女儿墙对超大跨度平屋面风压分布的影响。A380机库结构跨度大,一边有大开口,其屋盖结构竖向刚度弱,对风振比较敏感。采用时域法分析A380机库屋盖结构的风振响应,研究其在脉动风作用下的响应特性和风振系数分布规律。结果表明,不同风向角下的风振系数平均值接近,在1.5～2.0之间,可以采用同一风振系数计算A380机库的等效风荷载。研究成果为A380机库的抗风设计提供依据,为后续大跨度机库抗风设计提供参考。
Wind-resistant design of Beijing A380 hangar at Beijing Capital Airport is one of the important aspects in its structural design. In this paper, by analyzing the wind tunnel test results of the hangar, the characteristics of wind pressure distribution on external and internal surface of the hangar in different cases are introduced. The influences of low parapets on the wind pressure distribution for super-long-span flat roof structures are compared. Meanwhile, A380 hangar structure has the features of large-span, one side opening which leads to weak vertical stiffness, sensitivity to wind induced-vibration. The time domain method is adopted to perform the wind-induced dynamic analysis for A380 hangar roof. The wind-induced dynamic characteristics and the distribution patterns of wind fluttering factor are studied. The analytical results show that the average value of wind fluttering factor is about the same under the different wind direction and it is among 1.5 and 2.0. It is reasonable to take a same wind fluttering factor to calculate the equivalent wind load for A380 hangar. The results of this paper provide the base for the wind-resistant design of A380 hangar and can be references for the coming hangars.
Wind-resistant design of Beijing A380 hangar at Beijing Capital Airport is one of the important aspects in its structural design. In this paper, by analyzing the wind tunnel test results of the hangar, the characteristics of wind pressure distribution on external and internal surface of the hangar in different cases are introduced. The influences of low parapets on the wind pressure distribution for super-long-span flat roof structures are compared. Meanwhile, A380 hangar structure has the features of large-span, one side opening which leads to weak vertical stiffness, sensitivity to wind induced-vibration. The time domain method is adopted to perform the wind-induced dynamic analysis for A380 hangar roof. The wind-induced dynamic characteristics and the distribution patterns of wind fluttering factor are studied. The analytical results show that the average value of wind fluttering factor is about the same under the different wind direction and it is among 1.5 and 2.0. It is reasonable to take a same wind fluttering factor to calculate the equivalent wind load for A380 hangar. The results of this paper provide the base for the wind-resistant design of A380 hangar and can be references for the coming hangars.
引文
[1]朱丹,裴永忠,徐瑞,等.北京A380机库大跨度结构设计研究[J].土木工程学报,2008,41(2):1-8(Zhu Dan,Pei Yongzhong,Xu Rui,et al.Design and research on the long-span stracture of Beijing A380hangar[J].China Civil Engineering Journal,2008,41(2):1-8(in Chinese))
[2]何庆丰,胡建勤,陈科荣,等.9914#台风对建筑工程破坏情况的分析[J].福建建设科技,2001,(3):1-2(He Qingfeng,Hu Jianqin,Chen Kerong,et al.Analysis of building damage condition by9914#typhoon[J].Fujian Construction Science&Technology,2001,(3):1-2(in Chinese))
[3]周暄毅.大跨度屋盖结构风荷载及风致响应研究[D].上海:同济大学,2004(Zhou Xuanyi.Wind load and wind-induced response study of large-span roof structures[D].Shanghai:Tongji University,2004(in Chinese))
[4]钱稼茹,张微敬,朱丹,等.北京A380机库结构地震反应分析[J].土木工程学报,2008,41(2):9-16(Qian Jiaru,Zhang Weijing,Zhu Dan,et al.Earthquake response[analyses for Beijing A380hangar structure[J].China Civil Engineering Journal,2008,41(2):9-16(in Chinese))
[5]A380机库工程风荷载风洞试验研究报告[R].北京:北京大学力学与工程科学系,2005(Study report of wind tunnel test for A380hangar project[R].Beijing:The Mechanics and Engineering Science Department of Beijing University,2005(in Chinese))
[6]Ginger J D,Letchford C W.Net pressures on a low-rise full-scale building[J].Journal of Wind Engineering and Industrial Aerodynamics,1999,83:239-250
[7]Baskaran A,Stathopoulos T.Roof corner wind loads and parapet configuration[J].Journal of Wind Engineering and Industrial Aerodynamics,1998,29:79-88
[8]Simiu E,Scanlan R.Wind effects on structures:fundamentals and applications to design[M].New York:Wiley&Sons,1996
[9]王修琼,崔剑峰.Davenport谱中系数K的计算公式及其工程应用[J].同济大学学报,2002,30(7):849-852(Wang Xiuqiong,Cui Jianfeng.Formula of coefficient K in expression of Davenport spectrum and its engineering application[J].Journal of Tongji University,2002,30(7):849-852(in Chinese))
[10]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):4-5(Li Yuanqi,Dong Shilin.Random wind load simulation and computer program for large-span spatial structures[J].Spatial Structure,2001,7(3):4-5(in Chinese))
[11]Uematsu Y,Yamada M,Sasaki A,et al.Wind-induced dynamic response and resultant load estimation for a flat long-span roof[J].Journal of Wind Engineering and Industrial Aerodynamics,1996,66:227-248
[2]何庆丰,胡建勤,陈科荣,等.9914#台风对建筑工程破坏情况的分析[J].福建建设科技,2001,(3):1-2(He Qingfeng,Hu Jianqin,Chen Kerong,et al.Analysis of building damage condition by9914#typhoon[J].Fujian Construction Science&Technology,2001,(3):1-2(in Chinese))
[3]周暄毅.大跨度屋盖结构风荷载及风致响应研究[D].上海:同济大学,2004(Zhou Xuanyi.Wind load and wind-induced response study of large-span roof structures[D].Shanghai:Tongji University,2004(in Chinese))
[4]钱稼茹,张微敬,朱丹,等.北京A380机库结构地震反应分析[J].土木工程学报,2008,41(2):9-16(Qian Jiaru,Zhang Weijing,Zhu Dan,et al.Earthquake response[analyses for Beijing A380hangar structure[J].China Civil Engineering Journal,2008,41(2):9-16(in Chinese))
[5]A380机库工程风荷载风洞试验研究报告[R].北京:北京大学力学与工程科学系,2005(Study report of wind tunnel test for A380hangar project[R].Beijing:The Mechanics and Engineering Science Department of Beijing University,2005(in Chinese))
[6]Ginger J D,Letchford C W.Net pressures on a low-rise full-scale building[J].Journal of Wind Engineering and Industrial Aerodynamics,1999,83:239-250
[7]Baskaran A,Stathopoulos T.Roof corner wind loads and parapet configuration[J].Journal of Wind Engineering and Industrial Aerodynamics,1998,29:79-88
[8]Simiu E,Scanlan R.Wind effects on structures:fundamentals and applications to design[M].New York:Wiley&Sons,1996
[9]王修琼,崔剑峰.Davenport谱中系数K的计算公式及其工程应用[J].同济大学学报,2002,30(7):849-852(Wang Xiuqiong,Cui Jianfeng.Formula of coefficient K in expression of Davenport spectrum and its engineering application[J].Journal of Tongji University,2002,30(7):849-852(in Chinese))
[10]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):4-5(Li Yuanqi,Dong Shilin.Random wind load simulation and computer program for large-span spatial structures[J].Spatial Structure,2001,7(3):4-5(in Chinese))
[11]Uematsu Y,Yamada M,Sasaki A,et al.Wind-induced dynamic response and resultant load estimation for a flat long-span roof[J].Journal of Wind Engineering and Industrial Aerodynamics,1996,66:227-248
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