Alternative probabilistic models of the lifetime maximum load are compared for bridge spans which may be loaded by multiple vehicles. Several vehicles crossing a bridge are modeled by the random spaces between vehicles and the random vehicle weights. Simulation tests confirm the validity of single-random-variable-per-truck models. Several stochastic models of bridge response are explored--A simulation-based model which identifies the random coincidence of multiple trucks (groups) on the bridge; a simplified version using the entire weight of a 'platoon' of trucks; and a non-simulation, discrete position (slot) model for congested traffic loading. Results from these models indicate that the congested traffic may take the dominant contribution to the extreme load event for long and even medium span bridges. A model of the contrasting free-flowing traffic may be limited to a few group sizes or a simplified lower-bound approximation.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Modeling Extreme Vehicle Loads on Highway Bridges. Structural Loads Analysis and Specifications Project


    Beteiligte:
    R. D. Larrabee (Autor:in)

    Erscheinungsdatum :

    1978


    Format / Umfang :

    200 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Extreme Vehicle Loads on Bridges: Evaluating and Regulating Farm Equipment in Wisconsin

    Dietsche, Joshua S. / Oliva, William L. | Transportation Research Record | 2016


    Standard specifications for highway bridges

    The American Association of State Highway and Transportation Officials | TIBKAT | 1984


    Standard specifications for highway bridges

    American Association of State Highway and Transportation Officials | TIBKAT | 1983


    Design on Dynamic Performance of Highway Bridges to Moving Vehicular Loads

    Gao, Qing-Fei / Wang, Zong-Lin / Guo, Bin-Qiang et al. | Tema Archiv | 2013