ウェーブレット係数のエントロピーを用いた風速変動の非定常性評価の可能性

北川 徹哉

doi:10.14887/kazekosymp.Symp17.0.21.0

PROCEEDINGS OF 17th NATIONAL SYMPOSIUM ON WIND ENGINEERING

DOI https://doi.org/10.14887/kazekosymp.Symp17.0.21.0

Conference information

Host: Science Council of Japan

Co-host: Architectural Institute of Japan, Japan Association for Wind Engineering, The Institute of Electrical Engineering of Japan, Japan Society of Steel Construction, Japan Society of Civil Engineering, Meteorological Society of Japan

WAVELET COEFFICIENT ENTROPY OF NON-STATIONARY WIND FLUCTUATIONS

Tetsuya Kitagawa

Author information

Keywords: Gust response, Information entropy, Non-stationary wind fluctuation, Wavelet

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 21

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Abstract

The non-stationary properties of wind velocity fluctuations were investigated with the information entropy of wavelet coefficients. Many time histories of wind fluctuations were artificially generated and the gust response analyses in time domain were carried out using these data. The relationship between the peak factor and the entropy of the wavelet coefficients showed that the non-stationary wind fluctuations, whose frequencies were nearly equal to the natural frequency of the structure, tended to enlarge the peak factor.

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