The identification of maximum bearing friction is critical to working performance assessment of bridge sliding bearings. The friction-displacement hysteresis model was used for the bearing working performance (BWP) assessment. In this study, the bearing longitudinal displacement (BLD) hysteresis model is established for the sliding bearing system, introducing bearing friction and vehicle longitudinal effect. A novel approach for BWP assessment is presented using alternating vehicle longitudinal excitation. First, bearing friction and vehicle longitudinal effect were introduced to establish the hysteresis model of BLD. Subsequently, the evaluation index and the assessment approach were proposed for BWP assessment using the alternating vehicle longitudinal excitation. Finally, the assessment approach for BWP was applied to a real-world railway bridge. The results show that temperature-displacement relationship model for BWP assessment is unapplicable under significant vehicle longitudinal effects. On the contrary, the BLD induced by alternating vehicle longitudinal excitation can identify the degradation of the BWP when vehicle longitudinal excitation overcomes maximum bearing friction.


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    Titel :

    Condition Assessment of Railway Bridge Sliding Bearing Using Alternating Vehicle Longitudinal Excitation


    Weitere Titelangaben:

    KSCE J Civ Eng


    Beteiligte:
    Han, Naijie (Autor:in) / Zhang, Hao (Autor:in) / Zhao, Weigang (Autor:in) / Zhou, Liming (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2022-11-01


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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