A method is presented of measuring a bridge’s characteristic allowance for dynamic interaction in the form of Assessment Dynamic Ratio. Using a Bridge Weigh-in-Motion system, measurements were taken at a bridge in Slovenia over 58 days. From the total observed traffic population, 5-axle trucks were extracted and studied. The Bridge Weigh-in-Motion system inferred the static weights of the trucks, giving each measured event’s dynamic increment of load. Theoretical simulations were carried out using a 3-dimensional vehicle model coupled with a bridge plate model, simulating a traffic population similar to the population measured at the site. These theoretical simulations varied those properties of the 5-axle fleet that influence the dynamic response; simulating multiple sets of total (dynamic + static) responses for a single measured static strain response. Extrapolating the results of these theoretical simulations to a 50-year Assessment Dynamic Ratio gives similar results to those obtained by extrapolating the data measured using the Bridge Weigh-in-Motion system. A study of the effect of Bridge Weigh-in-Motion system errors on the predictions of Assessment Dynamic Ratio is conducted, identifying a trend in the Bridge Weigh-in-Motion calculations of maximum static response. The result of this bias is in turn quantified in the context of predicting characteristic maximum total load effect.


    Access

    Download


    Export, share and cite



    Title :

    Direct Measurement of Dynamics in Road Bridges Using a Bridge Weigh-In-Motion System


    Contributors:

    Publication date :

    2013-12-27


    Remarks:

    doi:10.3846/bjrbe.2013.34
    The Baltic Journal of Road and Bridge Engineering; Vol 8, No 4 (2013): The Baltic Journal of Road and Bridge Engineering; 263-270 ; 1822-4288 ; 1822-427X



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629



    Bridge weigh in motion

    Dolcemascolo, V. / Sjögren, Leif | Wiley | 2009


    Weigh-in-motion and smart bridges

    Lai, Leon L. | SPIE | 1997


    Bridge Weigh‐in‐Motion

    Žnidaric, Aleš | Wiley | 2009


    Application of Weigh-In-Motion Data to Fatigue of Road Bridges

    Jacob, B. / COST 323 Action; Project; Management Committee | British Library Conference Proceedings | 1998


    Measurements of bridge dynamics with a bridge weigh‐in‐motion system

    Žnidarič, Aleš / Lavrič, Igor / Kalin, Jan | Wiley | 2009