The number of superload trucks, which often carry loads three to 15 times those of common design vehicles, has increased in recent years. The increased frequency of occurrence has prompted concerns about the ability of highway bridges to accommodate such loads and remain in serviceable condition. To address these concerns, an analysis of effects of superloads has been conducted for a case study bridge. A detailed finite element (FE) model of the bridge, including all primary and secondary members, was created to evaluate the behavior. The FE analysis results were compared with results from a controlled load test of the bridge. The girder distribution factors determined experimentally and analytically were found to be significantly lower than comparable design values. Furthermore, from the load tests, the rotational restraint at the girder ends due to the abutments was determined to be as high as a fixed support. The FE model was then used to predict the effects of various superload trucks. The analysis results and field data suggest that some of the stiffener plates and cross-frame members of the analyzed bridge would be overstressed by certain superload truck configurations.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Analysis and Instrumentation of a Steel Bridge for Investigation of Superload Effects


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2006-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Analysis and Instrumentation of a Steel Bridge for Investigation of Superload Effects

    Wood, Scott / Akinci, Necip / Liu, Judy et al. | Transportation Research Record | 2006



    Instrumentation and Analysis of High-Performance Concrete Bridge Decks

    D'Ambrosia, Matthew D. / Lange, David A. / Grasley, Zachary C. et al. | Transportation Research Record | 2005


    Instrumentation and Analysis of High-Performance Concrete Bridge Decks

    Ambrosia, Matthew D.D' | Online Contents | 2005


    Instrumentation and Analysis of High-Performance Concrete Bridge Decks

    National Research Council (U.S.) | British Library Conference Proceedings | 2005