Počet záznamů: 1  

Aerodynamic and aeroelastic characteristics of typical bridge decks equipped with wind barriers at the windward bridge-deck edge

  1. 1.
    SYSNO ASEP0473548
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevAerodynamic and aeroelastic characteristics of typical bridge decks equipped with wind barriers at the windward bridge-deck edge
    Tvůrce(i) Buljac, Andrija (UTAM-F)
    Kozmar, H. (HR)
    Pospíšil, Stanislav (UTAM-F) RID, SAI, ORCID
    Macháček, Michael (UTAM-F) ORCID, SAI, RID
    Celkový počet autorů4
    Zdroj.dok.Engineering Structures. - : Elsevier - ISSN 0141-0296
    Roč. 137, April (2017), s. 310-322
    Poč.str.13 s.
    Forma vydáníTištěná - P
    Jazyk dok.eng - angličtina
    Země vyd.GB - Velká Británie
    Klíč. slovabridge decks ; roadway wind barrier ; aerodynamic forces and moments ; galloping ; flutter ; wind-tunnel experiments
    Vědní obor RIVJM - Inženýrské stavitelství
    Obor OECDConstruction engineering, Municipal and structural engineering
    CEPGA15-01035S GA ČR - Grantová agentura ČR
    LO1219 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
    UT WOS000395606100021
    EID SCOPUS85012026135
    DOI10.1016/j.engstruct.2017.01.055
    AnotaceThe present wind-tunnel study focuses on the effects of roadway wind barriers on aerodynamic and aeroelastic characteristics of bridge decks characterized by various aerodynamic shapes of the cross section. Three bridge-deck sections are studied, i.e., streamlined, semi-bluff, and bluff sections. The standard 5 m high (full-scale) wind barrier with 30% porosity is placed at the windward (leading) edge of the bridge-deck sections. Aerodynamic forces and overturning moment are determined at various wind incidence angles. Galloping stability is studied using the quasi-steady theory. Flutter derivatives are determined to evaluate flutter sensitivity of the studied bridge-deck sections with the wind barrier in comparison with the empty bridge-deck sections. The experimental results indicate some important features. In particular, the drag force coefficient is increased for all bridge-deck sections when the wind barrier is in place. This feature is particularly exhibited for the streamlined bridge-deck section. The wind barrier alters the trends and values of the lift force coefficient, while the influence of the wind barrier on the pitch moment is particularly exhibited for positive wind incidence angles, which is characteristic for all bridge-deck sections. The wind barrier does not influence the galloping sensitivity of the studied bridge-deck sections, while it deteriorates their dynamic stability with respect to torsional flutter.
    PracovištěÚstav teoretické a aplikované mechaniky
    KontaktKulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
    Rok sběru2018
    Elektronická adresahttp://www.sciencedirect.com/science/article/pii/S014102961730278X
Počet záznamů: 1  

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