Dynamic stability of the Golden Gate Bridge deteriorated by roadway wind barriers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F16%3A00460468" target="_blank" >RIV/68378297:_____/16:00460468 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Dynamic stability of the Golden Gate Bridge deteriorated by roadway wind barriers

Popis výsledku v původním jazyce

This study focuses on aerodynamic forces, moments and dynamic stability of the Golden Gate Bridge with a roadway wind barrier in place. Wind-tunnel experiments are carried out on the bridge-deck section to compare drag and lift force coefficients, pitch moment, galloping and flutter sensitivity for the bridge-deck section with and without a wind barrier. The experimental results indicate an exhibited influence of a roadway wind barrier on the Golden Gate Bridge aerodynamics and aeroelasticity. In particular, when a wind barrier is in place, there is an increase in drag force coefficients in the entire range of investigated wind incidence angles. For the lift force coefficients, the trends are different for negative and positive wind incidence angles. Absolute values of pitch moment coefficients are larger in the experiment with the wind barrier. Wind barriers are not likely to cause galloping instability, while flutter may be expected at lower wind velocities than it is the case for the empty bridge-deck section.

Název v anglickém jazyce

Dynamic stability of the Golden Gate Bridge deteriorated by roadway wind barriers

Popis výsledku anglicky

This study focuses on aerodynamic forces, moments and dynamic stability of the Golden Gate Bridge with a roadway wind barrier in place. Wind-tunnel experiments are carried out on the bridge-deck section to compare drag and lift force coefficients, pitch moment, galloping and flutter sensitivity for the bridge-deck section with and without a wind barrier. The experimental results indicate an exhibited influence of a roadway wind barrier on the Golden Gate Bridge aerodynamics and aeroelasticity. In particular, when a wind barrier is in place, there is an increase in drag force coefficients in the entire range of investigated wind incidence angles. For the lift force coefficients, the trends are different for negative and positive wind incidence angles. Absolute values of pitch moment coefficients are larger in the experiment with the wind barrier. Wind barriers are not likely to cause galloping instability, while flutter may be expected at lower wind velocities than it is the case for the empty bridge-deck section.

Druh

O - Ostatní výsledky

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů