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논문 기본 정보

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학술저널
저자정보
Meyer, Debbie (Department of Civil and Environmental Engineering, Florida International University) Chowdhury, Arindam Gan (Department of Civil and Environmental Engineering, Florida International University) Irwin, Peter (Department of Civil and Environmental Engineering, Florida International University)
저널정보
테크노프레스 Wind & structures Wind & structures 제20권 제6호
발행연도
2015.1
수록면
793 - 810 (18page)

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초록· 키워드

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Tests were conducted at the Florida International University (FIU) Wall of Wind (WOW) to investigate the susceptibility of Variable Message Signs (VMS) to wind induced vibrations due to vortex shedding and galloping instability. Large scale VMS models were tested in turbulence representative of the high frequency end of the spectrum in a simulated suburban atmospheric boundary layer. Data was measured for the $0^{\circ}$ and $45^{\circ}$ horizontal wind approach directions and vertical attack angles ranging from $-4.5^{\circ}$ to $+4.5^{\circ}$. Analysis of the power spectrum of the fluctuating lift indicated that vertical vortex oscillations could be significant for VMS with a large depth ratio attached to a structure with a low natural frequency. Analysis of the galloping test data indicated that VMS with large depth ratios, greater than about 0.5, and low natural frequency could also be subject to galloping instability.

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