This study proposes hybrid jacketing for rapid repair of seismically damaged concrete columns for bridge safety. The hybrid jacketing for a reinforced concrete (RC) column is composed of a thin cold-formed steel sheet wrapped around the column and its outside prestressing strands. Although the prestressing strands can prevent buckling of the confining steel sheet, the steel sheet can in turn prevent the prestressing strands from cutting into the concrete. The hybrid jacketing concept was validated with testing of a large-scale RC column with lap splice deficiency typical of pre-1970 bridge constructions in the Central United States. Results from the original and repaired columns were compared for hysteresis loops, strength, stiffness, ductility, and energy dissipation. The hybrid jacketing proved to be effective in restoring structural behavior of the damaged column to prevent bridge collapse. Such a cost-effective solution can be implemented at bridge sites in hours. Design equations to establish the lateral force–displacement relationship of the tested column to design the hybrid jacket are derived in detail.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Hybrid Jacketing for Rapid Repair of Seismically Damaged Reinforced Concrete Columns


    Weitere Titelangaben:

    Transportation Research Record: Journal of the Transportation Research Board


    Beteiligte:


    Erscheinungsdatum :

    04.04.2019




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Seismic Retrofitting of Cruciform-Shaped Columns by Jacketing with Fiber-Reinforced Polymer

    Walkenhauer, Brian J. / McLean, David I. / Boone, Craig et al. | Transportation Research Record | 2011


    Design of filling self-stressing concrete to use in strengthening of columns by prefabricated jacketing

    Carballosa, Pedro / Revuelta, D. / Fernández-Escandón González, Alfredo | BASE | 2020

    Freier Zugriff

    Repair of Severely Damaged Reinforced Concrete Beams with High-Strength Cementitious Grout

    Gergess, Antoine N. / Shaikh Al Shabab, Mahfoud / Massouh, Razane | Transportation Research Record | 2020


    Plasticity constitutive modeling of partially confined concrete with steel jacketing

    Shafei, Erfan / Rahmdel, Javad Mokari | Online Contents | 2017