The concept, basic principle, and characteristics of twice-prestressed composite beam are introduced, and the mechanical performance, deformation performance, and creep stress redistribution of the horizontal interface of twice-prestressed beam are discussed. In addition, previous studies regarding the application of twice-prestressed composite beams in highway bridges are summarized and analyzed. It is concluded that the twice-prestressed composite beam can decrease the creep camber of a prestressed concrete beam by more than 50%; thus, the contradiction of reducing creep camber and improving the safety of section crack resistance can be effectively resolved. Moreover, twice-prestressed composite beam can save approximately 10% of prestressed tendons and has comprehensive technical and economical advantages in highway ultrathin beam bridges and urban overpass bridges. Future research of twice-prestressed composite beam will focus on the design method, connection model, structure, and shear performance of horizontal interface in addition to the construction technology.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Research on Twice-Prestressed Composite Beam and Its Application in Highway Bridges


    Beteiligte:
    Zhou, Ya-dong (Autor:in) / Shao, Xu-dong (Autor:in)


    Erscheinungsdatum :

    15.05.2015


    Format / Umfang :

    72015-01-01 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt



    Structural Safety of Prestressed Concrete and Composite Steel Highway Bridges

    Tabsh, S. W. / National Research Council; U.S.; Transportation Research Board | British Library Conference Proceedings | 1995



    Performance Evaluation of Composite Prestressed Concrete Slab Bridges

    Peterman, Robert J. / Ramirez, Julio A. | Transportation Research Record | 2000


    Innovative Prestressed Steel Composite Short-to Medium-Span Bridges

    Burroughs, Dan / Lockwood, James / Price, Kenneth | Transportation Research Record | 1997