Model similarity experiment is an effective method to predict the vibration response of track-box girder structure under complex working conditions. In this paper, the coupling similarity relationship between the layers of the multilayer structure is deduced theoretically. In addition, according to the elasticity similarity law and the π theorem, a track-box girder coupling vibration model with a 10:1 geometric similarity ratio was designed. The influence of parameters on the system similarity was further discussed, including the density and elastic modulus of track plate, the stiffness of fastener and CA mortar layer. Finally, a scale track-box girder model was built. Based on the modal test and finite element method, the model design and the similarity relation between prototype and model were verified. The results show that the scale model can be employed to forecast vibrations for an elevated track bridge, and the vibration level under different working conditions can be inverted from the model test results in model design. When the geometry size of a certain structural layer in the direction of load is much larger than that of the other structural layers, the similarity relation derived from the material properties of the structural layer is approximately equal to the similarity of the system between the prototype and the scale model.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Similar Model for Accurate Structural Vibration Analysis of Elevated Track-Box Girder Coupling System


    Weitere Titelangaben:

    KSCE J Civ Eng


    Beteiligte:
    Luo, Kun (Autor:in) / Wang, Pengsheng (Autor:in) / Lei, Xiaoyan (Autor:in) / Zhao, Yan (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2023-10-01


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






    Elevated prestressed concrete box girder hoisting protector

    WEN SHUAI / SUN YANPENG / MAO YILI et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    Box girder observation structure facilitating accurate in-position and box girder erection method

    HU ZHEQUAN / JIANG XINXING / CHEN FUSONG et al. | Europäisches Patentamt | 2022

    Freier Zugriff

    RAILWAY VEHICLES AUTOMATIC COUPLING GIRDER SYSTEM DISENGAGEMENT MECHANISM

    SHYULER MARTIN | Europäisches Patentamt | 2017

    Freier Zugriff