Wind and Structures

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Typhoon wind hazard analysis using the decoupling approach

  • Hong, Xu (College of Civil Engineering, Hefei University of Technology) ;
  • Li, Jie (College of Civil Engineering, Tongji University)
  • Received : 2022.06.19
  • Accepted : 2022.10.26
  • Published : 2022.10.25
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Abstract

Analyzing the typhoon wind hazards is crucial to determine the extreme wind load on engineering structures in the typhoon prone region. In essence, the typhoon hazard analysis is a high-dimensional problem with randomness arising from the typhoon genesis, environmental variables and the boundary layer wind field. This study suggests a dimension reduction approach by decoupling the original typhoon hazard analysis into two stages. At the first stage, the randomness of the typhoon genesis and environmental variables are propagated through the typhoon track model and intensity model into the randomness of the key typhoon parameters. At the second stage, the probability distribution information of the key typhoon parameters, combined with the randomness of the boundary layer wind field, could be used to estimate the extreme wind hazard. The Chinese southeast coastline is taken as an example to demonstrate the adequacy and efficiency of the suggested decoupling approach.

Keywords

Acknowledgement

The research described in this paper was financially supported by the Fundamental Research Funds for the Central Universities of China (NOs. JZ2022HGQA0168 and PA2022GDSK0063).

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