| 某大跨网壳的风致响应影响参数分析 |
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| 引用本文： | 李敏,杨炯,姚勇,陈代果.某大跨网壳的风致响应影响参数分析[J].西南科技大学学报,2012,27(1):32-36. |
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| 作者姓名： | 李敏 杨炯 姚勇 陈代果 |
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| 作者单位： | 1. 西南科技大学土木工程与建筑学院,四川绵阳,621010
2. 中国空气动力研究与发展中心,四川绵阳,621000 |
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| 摘 要： | 在设计大跨结构时,风荷载是被控制的主要因素。为探讨地面粗糙类别、基本风压、阻尼比和风向角对大跨结构风致响应的影响,以重庆某体育场大跨网壳屋盖为研究对象进行了数值模拟分析。计算结果表明:对于大跨结构,采用随机振动分析时需考虑高阶参与振型的影响,当地面粗糙类别由A类向D类变化时,风致响应会逐渐加强,随基本风压的增大,也会使得风致响应逐渐加强,随阻尼比的增大,风致响应会逐渐减弱,风向角的变化对风致响应影响较大。
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| 关 键 词： | 大跨网壳 随机振动分析 参与振型 风致响应 |
Analysis of Wind-induced Response Influence Parameters of Large Span Reticulated Shell Structure |
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| LI Min,YANG Jiong,YAO Yong,CHEN Dai-guo.Analysis of Wind-induced Response Influence Parameters of Large Span Reticulated Shell Structure[J].Journal of Southwest University of Science and Technology,2012,27(1):32-36. |
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| Authors: | LI Min YANG Jiong YAO Yong CHEN Dai-guo |
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| Institution: | 1(1.School of Civil Engineering and Architecture,Southwest University of Science and Technology, Mianyang 621010,Sichuan,China;2.China Aerodynamics Research and Development Center, Mianyang 621000,Sichuan,China) |
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| Abstract: | Influence of rough type of ground,basic wind pressure damping ratio and wind direction angle on large span reticulated shell structure was discussed,by numerical simulation analysis of a stadium in Chongqing.The results show that analyzing the random vibration of large-span structures,the impact of high step involved in vibration mode need to consider.When rough type of ground is changed from Class A to Class D,the wind-induced response will gradually strengthen.As the increase of basic wind pressure,the wind-induced response will also gradually strengthen.As the increase of damping ratio,the wind-induced response will gradually decrease.The change of wind direction angle has great influence on the wind-induced response. |
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| Keywords: | Large span reticulated shell structure Random vibration analysis Involved in vibration mode Wind-induced response |
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