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首页> 外文会议>International Conference on Advances in Building Technology Vol.2, Dec 4-6, 2002, Hong Kong, China >WIND-INDUCED DYNAMIC RESPONSE AND WIND LOAD FACTOR FOR FLEXIBLE ROOF STRUCTURES WITH MEDIUM DEFORMATION
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WIND-INDUCED DYNAMIC RESPONSE AND WIND LOAD FACTOR FOR FLEXIBLE ROOF STRUCTURES WITH MEDIUM DEFORMATION

机译：中等变形柔性屋盖结构的风振动力响应和风荷载因子

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摘要

This paper carries out comparative study of wind tunnel test and theoretical analysis on wind-induced responses and wind load factors for flexible roof structures with medium deformation. Flexible roof structures with me'dium deformation refer to a kind of roofs that the wind-structure-coupling effects can be neglected. Fluctuating wind pressure records from rigid model wind tunnel tests are taken as wind loads acting on roof structure, then wind-induced responses and wind load factors are analyzed in the time domain. For comparison, the spectral analysis based on quasi-steady theory is also used to predict wind responses of the same roof structure. It is found that the results predicted by the time domain method well agree with those obtained by the perfect aeroelastic model wind tunnel tests. On the other hand, the results predicted by spectral analysis based on quasi-steady theory are the same with test results only in tendency, but far more than test results in value. Hence, a modified coefficient is introduced when the spectral analysis method based on quasi-steady theory is used to estimate the wind effects on flexible roof structures with medium deformation.
机译：本文对风洞试验进行了比较研究，并对中等变形的柔性屋盖结构的风响应和风荷载因子进行了理论分析。具有中等变形的柔性屋顶结构是指可以忽略风-结构耦合作用的一种屋顶。将刚性模型风洞测试中波动的风压记录作为作用在屋顶结构上的风荷载，然后在时域中分析风致响应和风荷载因子。为了进行比较，基于准稳态理论的光谱分析也用于预测相同屋顶结构的风响应。结果表明，时域法预测的结果与理想的气动弹性模型风洞试验的结果吻合良好。另一方面，基于准稳态理论的频谱分析预测的结果与测试结果仅在趋势上是相同的，但在价值上远远超过测试结果。因此，当使用基于准稳态理论的谱分析方法来估计风对具有中等变形的柔性屋顶结构的影响时，引入了修正系数。

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