Wind and Structures

  • 제6권4호
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  • Pages.263-278
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  • 2003
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Effects of deck's width-to-depth ratios and turbulent flows on the aerodynamic behaviors of long-span bridges

  • Lin, Yuh-Yi (Department of Civil Engineering, Tamkang University) ;
  • Cheng, Chii-Ming (Department of Civil Engineering, Tamkang University) ;
  • Lan, Chao-Yuan (Department of Civil Engineering, Tamkang University)
  • 투고 : 2002.12.20
  • 심사 : 2003.08.20
  • 발행 : 2003.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study investigates the effects of a bridge deck's width-to-depth (B/H) ratio and turbulence on buffeting response and flutter critical wind speed of long-span bridges by conducting section model tests. A streamlined box section and a plate girder section, each with four B/H ratios, were tested in smooth and turbulent flows. The results show that for the box girders, the response increases with the B/H ratio, especially in the vertical direction. For the plate girders, the vertical response also increases with the B/H ratio. However, the torsional response decreases as the B/H ratio increases. Increasing the B/H ratio and intensity of turbulence tends to improve the bridge's aerodynamic stability. Experimental results obtained from the section model tests agree reasonably with the calculated results obtained from a numerical analysis.

키워드

과제정보

연구 과제 주관 기관 : National Science Council (R. O. C.)

참고문헌

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