Wind and Structures

  • 제10권3호
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  • Pages.215-232
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  • 2007
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

A study of wind effect on damping and frequency of a long span cable-stayed bridge from rational function approximation of self-excited forces

  • 투고 : 2006.05.29
  • 심사 : 2007.02.22
  • 발행 : 2007.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents an aeroelastic analysis procedure to highlight the influence of wind velocity on the structural damping and frequency of a long span cable-stayed bridge. Frequency dependent self-excited forces in terms of flutter derivatives are expressed as continuous functions using rational function approximation technique. The aeroelastically modified structural equation of motion is expressed in terms of frequency independent modal state-space parameters. The modal logarithmic dampings and frequencies corresponding to a particular wind speed are then determined from the eigen solution of the state matrix.

키워드

참고문헌

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피인용 문헌

  1. Wireless monitoring of typhoon-induced variation of dynamic characteristics of a cable-stayed bridge vol.20, pp.2, 2015, https://doi.org/10.12989/was.2015.20.2.293
  2. Structural identification of cable-stayed bridge under back-to-back typhoons by wireless vibration monitoring vol.88, 2016, https://doi.org/10.1016/j.measurement.2016.03.032
  3. Transfer function approximation of motion-induced aerodynamic forces with rational functions vol.14, pp.2, 2007, https://doi.org/10.12989/was.2011.14.2.133