Effect of column parameters on cyclic behavior of ultra-high-performance concrete-filled fiber-reinforced polymer tubes

A novel hybrid column made of fiber-reinforced polymer (FRP) and ultra-high-performance concrete (UHPC) was developed in a previous study by the authors. The steel-free UHPC-filled FRP tube (UHPCFFT) system proved promising as an alternative to conventional reinforced concrete (RC) columns. This study investigates the effect of column cross section, type of FRP tube, and amount of longitudinal steel reinforcement on the cyclic behavior of UHPCFFT columns. Accordingly, six column specimens, including one control RC and five UHPCFFTs with different FRP tubes, steel reinforcement ratios, and diameters, were made and studied under pseudo-static tests. Clear and strong correlations were established between the initial stiffness and strength of UHPCFFT systems and the stiffness index and reinforcement index, respectively. All UHPCFFT columns exhibited significantly lower residual displacement and slightly lower ductility, as compared to Specimen RC.

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  • English

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  • Accession Number: 01495325
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 4 2013 12:29PM