Abstract A methodology to identify and analyze the bridge scour depth by tracing the dynamic behaviors of superstructures was developed. This proposed methodology basically relies upon the bridge scour-induced effects on the variations of two dynamic features of superstructures, i.e., the natural frequency of vibration and mode of vibration. Firstly a flexibility matrix incorporating the two dynamic features is deduced for bridges under scour conditions. Then, using the scour-induced variations of such flexibility matrix, a new parameter of “[D]-based deflection change” Δδ is defined as an important index for identifying the scour depth. Such an index Δδ is determined by both FEM (Finite Element Method) simulations and on-site measurements on the dynamic features of superstructures. By doing this, the scour depths corresponding to the measured Δδ are back-deduced based on a pre-simulated relationship between Δδ and scour depths. A case study based on the simulation and a demonstration based on actual field data are finally given to demonstrate the application procedure and qualitatively verify the feasibility of the proposed methodology. This methodology does not require any continuous and long-term bridge monitoring using underwater instrumentations and could be conveniently integrated to a routine assessment or structural monitoring system.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Identification of Bridge Scour Depth by Tracing Dynamic Behaviors of Superstructures


    Beteiligte:
    Xiong, Wen (Autor:in) / Cai, C. S. (Autor:in) / Kong, Bo (Autor:in) / Tang, Pingbo (Autor:in) / Ye, Jianshu (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2017-06-23


    Format / Umfang :

    12 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Identification of Bridge Scour Depth by Tracing Dynamic Behaviors of Superstructures

    Xiong, Wen / Cai, C. S. / Kong, Bo et al. | Online Contents | 2018


    Time-Dependent Scour Depth under Bridge-Submerged Flow

    Guo, J. / Kerenyi, K. / Shan, H. et al. | HENRY – Bundesanstalt für Wasserbau (BAW) | 2010

    Freier Zugriff

    Depth of Scour at Groups of Two Bridge Piers

    Mashahir, Mohammad B. / Zarrati, Amir Reza / Mokallaf, Ebrahim | HENRY – Bundesanstalt für Wasserbau (BAW) | 2006

    Freier Zugriff

    Experimental Evaluation of SCOUR DEPTH around bridge pier group

    Beheshti, A. A. / Ataie-Ashtiani, B. | HENRY – Bundesanstalt für Wasserbau (BAW) | 2004

    Freier Zugriff

    Maximum local scour depth at bridge piers and abutments

    Kandasamy, J. K. / Melville, B. W. | British Library Online Contents | 1998