Influence of Concrete-Filling Inner Steel Tube on Compressive Behavior of Double-Skin Tubular Columns

Abstract:

This paper reports on a part of an ongoing experimental program at the University of Adelaide on the behavior of fiber reinforced polymer (FRP)-concrete-steel double-skin tubular columns (DSTCs). Influence of concrete-filling inner steel tube on the compressive behavior of FRP-concrete-steel DSTCs was investigated experimentally through the test of 8 normal-and high-strength concrete DSTCs. The results of the experimental study indicate that concrete-filling inner steel tubes of DSTCs results in a slightly increase in the compressive strength and decrease in the ultimate strain of concrete in DSTCs, compared to companion DSTCs with hollow inner steel tubes. The results also indicate that concrete in both types of DSTCs is confined effectively by FRP and steel tubes.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 535-539
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.535
• Online since: November 2013
• Authors: Butje Alfonsius Louk Fanggi*, Togay Ozbakkaloglu
• Keywords: Column, Concrete, Confinement, DSTCs, Fiber Reinforced Polymer (FRP), FRP Tubes, High-Strength Concrete (HSC), Steel Tubes

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