Bond deterioration between steel bars and concrete in reinforced-concrete beams mostly occurs close to the primary (i.e., bending induced) cracks. To investigate bond-cracking interaction, a novel bond-slip relationship is introduced in this study, where bond parameters are a function of crack-opening displacement. Such a displacement is in turn evaluated based on the highly variable strain profiles in the concrete, through an iterative procedure. The effectiveness of the proposed approach is validated against a set of tests on RC beams well-documented in the literature, which show a clear trend for the local bond stresses to decrease close to the primary cracks. The bond-slip relationships along the bar and the maximum bond stress depend on the applied loads and on the crack pattern, with a mutual interaction that affects both the crack-opening displacement and the bond stresses, causing a nonlinear increase in the steel strains. Nevertheless, the bond-slip relationships display descending branches characterized by remarkably similar slopes within a given region, irrespective of the loads. Consequently, if the descending branch for this region is known under a particular load, the branches under other loads can be obtained by horizontally translating the known branch. The proposed approach may provide a useful tool to describe bond behavior in RC members and to understand the complex interaction among the displacements due to crack opening, bond stresses and their structural effect.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Steel-Concrete Bond versus Primary Crack Opening in Reinforced Concrete Beams


    Weitere Titelangaben:

    KSCE J Civ Eng


    Beteiligte:
    Wang, Jianming (Autor:in) / Guo, Jian (Autor:in) / Fu, Chunyu (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.11.2024


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Steel-Concrete Bond versus Primary Crack Opening in Reinforced Concrete Beams

    Wang, Jianming / Guo, Jian / Fu, Chunyu | Springer Verlag | 2024


    THE STRAIN- STRESS STATE OF STEEL REINFORCED CONCRETE BEAMS

    A. V. Krukhmalov | DOAJ | 2010

    Freier Zugriff


    Limiting Reinforcement Ratios for Hybrid GFRP/Steel Reinforced Concrete Beams

    Duy Phan Nguyen / Viet Quoc Dang | BASE | 2021

    Freier Zugriff