Structural Engineering and Mechanics

  • 제53권3호
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  • Pages.607-623
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  • 2015
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Separation of background and resonant components of wind-induced response for flexible structures

  • Li, Jing (Faculty of Civil and Transportation Engineering, Guangdong University of Technology) ;
  • Li, Lijuan (Faculty of Civil and Transportation Engineering, Guangdong University of Technology) ;
  • Wang, Xin (Faculty of Civil and Transportation Engineering, Guangdong University of Technology)
  • 투고 : 2013.06.11
  • 심사 : 2014.07.04
  • 발행 : 2015.02.10
⟨ 이전 논문 다음 논문 ⟩

초록

The wind-induced dynamic response of large-span flexible structures includes two important components-background response and resonant response. However, it is difficult to separate the two components in time-domain. To solve the problem, a relational expression of wavelet packet coefficients and power spectrum is derived based on the principles of digital signal processing and the theories of wavelet packet analysis. Further, a new approach is proposed for separation of the background response from the resonant response. Then a numerical example of frequency detection is provided to test the accuracy and the spectral resolution of the proposed approach. In the engineering example, the approach is applied to compute the power spectra of the wind-induced response of a large-span roof structure, and the accuracy of spectral estimation for stochastic signals is verified. The numerical results indicate that the proposed approach is efficient and accurate with high spectral resolution, so it is applicable for power spectral computation of various response signals of structures induced by the wind. Moreover, the background and the resonant response time histories are separated successfully using the proposed approach, which is sufficiently proved by detailed verifications. Therefore, the proposed approach is a powerful tool for the verification of the existing frequency-domain formulations.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

참고문헌

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피인용 문헌

  1. Fluctuating wind field analysis based on random Fourier spectrum for wind induced response of high-rise structures vol.63, pp.6, 2015, https://doi.org/10.12989/sem.2017.63.6.837
  2. Analysis and design of fabric membrane structures: A systematic review on material and structural performance vol.170, pp.None, 2022, https://doi.org/10.1016/j.tws.2021.108619