Influence of stationary vehicles on bridge aerodynamic and aeroelastic coefficients

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F17%3A00466796" target="_blank" >RIV/68378297:_____/17:00466796 - isvavai.cz</a>

Result on the web

<a href="http://ascelibrary.org/doi/full/10.1061/%28ASCE%29BE.1943-5592.0001017" target="_blank" >http://ascelibrary.org/doi/full/10.1061/%28ASCE%29BE.1943-5592.0001017</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1061/(ASCE)BE.1943-5592.0001017" target="_blank" >10.1061/(ASCE)BE.1943-5592.0001017</a>

Result language

angličtina

Original language name

Influence of stationary vehicles on bridge aerodynamic and aeroelastic coefficients

Original language description

This study focuses on modifications in bridge aerodynamic and aeroelastic behaviors due to stationary (nonmoving) vehicles for various arrangements of vehicles on a bridge deck. Dimensionless aerodynamic force and moment coefficients, as well as flutter derivatives, are analyzed experimentally in a wind tunnel in the model of a bridge with a semibluff cross section. A comparison is provided for stationary vehicles placed in leeward, windward, and all traffic lanes, as well as for an empty bridge-deck section. Drag, lift static forces, and moment coefficients are determined for various wind incidence angles. Flutter derivatives are obtained using the free-vibration technique for both one- and two-degrees-of-freedom systems. Stationary vehicles on the bridge deck are generally observed to change aerodynamic coefficients of the bridge. This is particularly exhibited for the pitch moment. Galloping sensitivity of the bridge does not change considerably in the presence of vehicles, as all studied configurations remain stable. When considering one-degree-of-freedom motion of the bridge-deck section, an empty bridge without the vehicles proved to be more prone to torsional flutter than the bridge with various arrangements of the vehicles. For the two-degrees-of-freedom system, nonmoving vehicles have a rather beneficial effect on the bridge stability. This is particularly exhibited in the experiment with the vehicles placed in the windward traffic lanes, as well as in all traffic lanes. Although these findings cannot be completely generalized because every bridge has its unique geometry, some indications are provided with respect to important design aspects.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

Journal of Bridge Engineering

ISSN

1084-0702

e-ISSN

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Volume of the periodical

22

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

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UT code for WoS article

000398461000008

EID of the result in the Scopus database

2-s2.0-85016081320