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工程力学  2013 

近海风力发电高塔波浪动力可靠度分析

DOI: 10.6052/j.issn.1000-4750.2011.09.0630

Keywords: 动力可靠度,近海风力发电高塔,概率密度演化,随机Fourier海浪谱,Monte,Carlo抽样

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Abstract:

采用基于广义概率密度演化方程的极值概率密度理论,该文研究了近海风力发电高塔在随机波浪作用下的动力可靠度问题。波场由基于拟层流风波生成机制的随机Fourier海浪谱及线性波浪理论模拟,确定性结构动力响应由有限元模型分析给出。结果表明:采用极值概率密度理论可以方便地计算出不同阈值水平下塔顶侧移的动力可靠度,采用经典的Poisson模型计算的动力可靠度随阈值水平的降低而误差增大。

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