基于设计基准条件的台风边界层脉动风速谱建模方法研究

李利孝 肖仪清1 周超英1 宋丽莉2

振动与冲击 ›› 2015, Vol. 34 ›› Issue (11) : 11-16.

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (11) : 11-16.
论文

基于设计基准条件的台风边界层脉动风速谱建模方法研究

  • 李利孝  肖仪清1 周超英1 宋丽莉2
作者信息 +

Research on modeling wind velocity spectrum in typhoon boundary layer based on the conditions for design reference

  • LI Li-xiao1, XIAO Yi-qing1, ZHOU Chao-ying1, SONG Li-li2
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文章历史 +

摘要

本文利用在博贺峙仔岛观测站实测的台风黑格比数据,在莫宁-奥布霍夫相似理论框架内提出了一种数据驱动的考虑设计基准条件的台风边界层脉动风速谱建模方法。首先基于均匀各向同性湍流能谱需满足的基本模型准则,将六参数脉动风速谱统一模型简化为四参数谱模型;之后基于高频区和低频区脉动风速谱特征建立了四个谱参数的理论表达式,并利用实测的台风黑格比数据将谱参数理论表达式进行参数化处理,进而提出基于设计基准条件的脉动风速谱建模方法;最后利用台风黑格比过程中任意选取的四个一小时时长样本对上述脉动风速谱建模方法进行了验证,表明其与实测样本的风速谱具有较好的一致性。

Abstract

A data-driven model was proposed to model wind velocity spectrum in typhoon boundary layer, in which the conditions of design reference were taken into account. This model was established on bases of Moning-Obukhov Similarity Theory (MOST) and the field measured data of typhoon Hagupit in Zhizai Island, Bohe. Firstly, the six-parameter general model was simplified into four-parameter spectral model by matching the model criteria of energy spectrum in homogeneous turbulent flow. Secondly, the theoretical expressions of the four spectral parameters were determined based on the features of wind velocity spectrum in low and high frequency range. Then the data-driven model accounting the conditions of design reference was established through parameterizing the four spectral parameters on basis of the field measured data of typhoon Hagupit. Finally, the validation of the data-driven model was examined using arbitrarily selected four 1-hour length datasets in different sectors of typhoon Hagupit, and the model shows a good agreement with the measurements.

关键词

台风 / 湍流 / 脉动风速谱 / 设计基准条件 / 结构抗风设计

Key words

typhoon / turbulence / wind velocity spectrum / conditions for design reference / wind-resistance design

引用本文

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李利孝 肖仪清1 周超英1 宋丽莉2. 基于设计基准条件的台风边界层脉动风速谱建模方法研究[J]. 振动与冲击, 2015, 34(11): 11-16
LI Li-xiao1, XIAO Yi-qing1, ZHOU Chao-ying1, SONG Li-li2. Research on modeling wind velocity spectrum in typhoon boundary layer based on the conditions for design reference[J]. Journal of Vibration and Shock, 2015, 34(11): 11-16

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