Flexural Behavior of Hybrid Double-Skin-Tubular Beams

Abstract:

This paper reports on part of an ongoing experimental program at The University of Adelaide on the flexural behavior of FRP-high-strength concrete (HSC)-steel double-skin tubular beams (DSTBs). The results from three circular DSTBs that were tested as simply supported beams in a four-point bending setup under monotonic loading are presented. The experimental study investigated the influences of the inner steel tube diameter and the use of mechanical connectors on the steel tube on the flexural behavior of DSTBs. The results indicate that DSTBs are capable of developing very high inelastic flexural deformations. However, the results also indicate that slip between the concrete and the steel tube of the DSTB can be relatively large, unless the bond between concrete and steel tube is enhanced through the use of mechanical connectors. It was also observed that the flexural behavior of DSTBs is influenced significantly by the diameter and thickness of the inner steel tube.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 525-529
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.525
• Online since: November 2013
• Authors: Yunita Idris, Togay Ozbakkaloglu*
• Keywords: Beam, Confinement, Displacement Capacity, Fiber Reinforced Polymer (FRP), Flexure, High-Strength Concrete (HSC), Tubes

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