Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Behavior of CFSTs and CCFSTs under quasi-static axial compression
Abstract The behavior of circular Concrete Filled Steel Tubes (CFST) and Confined Concrete Filled Steel Tubes (CCFST) with Glass Fiber-Reinforced Polymers (GFRP) wrapping sheets subject to concentric compressive quasi-static loads is investigated in this paper. Thirty five CFST and CCFST specimens were tested to investigate the effect of different parameters on their behavior. Two concrete compressive strengths of 44MPa and 60MPa combined with three diameter-to-thickness ratios of 54, 32, and 20 were considered. It was found that the dominant failure mode of the CCFST specimens is the explosive rupture of the GFRP wraps at the specimen's mid-height region. Even though the strain hardening region is as apparent in the CCFST specimen as its CFST benchmark, the CCFST section's axial load-carrying and ductility capacities have considerably increased due to the GFRP additional confinement.
Highlights CFSTs and CCFSTs were tested and compared under quasi static condition. CCFST with three D/t ratios using normal and high strength concrete are considered. Effect of confinement by GFRP sheet on the CCFST axial capacity is investigated. The dominant failure mode was the explosive rupture of GFRP wraps at mid-height.
Behavior of CFSTs and CCFSTs under quasi-static axial compression
Abstract The behavior of circular Concrete Filled Steel Tubes (CFST) and Confined Concrete Filled Steel Tubes (CCFST) with Glass Fiber-Reinforced Polymers (GFRP) wrapping sheets subject to concentric compressive quasi-static loads is investigated in this paper. Thirty five CFST and CCFST specimens were tested to investigate the effect of different parameters on their behavior. Two concrete compressive strengths of 44MPa and 60MPa combined with three diameter-to-thickness ratios of 54, 32, and 20 were considered. It was found that the dominant failure mode of the CCFST specimens is the explosive rupture of the GFRP wraps at the specimen's mid-height region. Even though the strain hardening region is as apparent in the CCFST specimen as its CFST benchmark, the CCFST section's axial load-carrying and ductility capacities have considerably increased due to the GFRP additional confinement.
Highlights CFSTs and CCFSTs were tested and compared under quasi static condition. CCFST with three D/t ratios using normal and high strength concrete are considered. Effect of confinement by GFRP sheet on the CCFST axial capacity is investigated. The dominant failure mode was the explosive rupture of GFRP wraps at mid-height.
Behavior of CFSTs and CCFSTs under quasi-static axial compression
Abdalla, Suliman (Autor:in) / Abed, Farid (Autor:in) / AlHamaydeh, Mohammad (Autor:in)
Journal of Constructional Steel Research ; 90 ; 235-244
06.08.2013
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Behavior of CFSTs and CCFSTs under quasi-static axial compression
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