Structural Behavior of Hybrid FRP-Concrete-Steel Double-Skin Tubular Arches: Experiments and Numerical Modeling

Fernando，Dilum1; De Waal，Leo1; Jiang，Shuan2; Teng，J. G.3; Lin，Guan3,4; Li，Xi3

2024-12-01

10.1061/JCCOF2.CCENG-4597

Journal of Composites for Construction   影响因子和分区

1090-0268

1943-5614

Hybrid fiber-reinforced polymer (FRP)-concrete-steel double-skin tubular members (DSTMs) yield much higher strength-to-weight ratios and much better corrosion resistance than traditional reinforced concrete members. The steel tube and the FRP tube in DSTMs act as propping and formwork for concrete casting, thus significantly reducing construction efforts. DSTMs have been extensively studied as columns and beams. This paper presents a study aimed at understanding the benefit of using the double-skin tubular cross section in arches. Five double-skin tubular arches (DSTAs) with a span length of 3.6 m were fabricated and tested to investigate their behavior. The test program examined the effects of section load eccentricity, eccentricity of the steel tube position in the section, thickness of the FRP tube, and diameter of the steel tube on the behavior of the DSTAs. All the DSTA specimens displayed ductile behavior. The DSTAs were found to provide a significantly higher ultimate load than corresponding steel-concrete composite arches of a similar cross section. A higher cross-sectional load eccentricity was found to reduce the ultimate load of a DSTA. A numerical model was also developed in OpenSees (2019) version 3.2.2 to predict the behavior of the DSTAs. The numerical predictions were found to agree with the experimental results reasonably well.

Confinement Experimental investigation Fiber-reinforced polymer (FRP)-concrete-steel double-skin tubular arch (DSTA) Hybrid tubular member Numerical modeling OpenSees

英语

其他

2-s2.0-85203171409

Scopus

1.School of Engineering,Univ. of Edinburgh,Edinburgh,EH8 9YL,United Kingdom
2.School of Civil Engineering,Univ. of Queensland,St Lucia,4072,Australia
3.Dept. of Civil and Environmental Engineering,Hong Kong Polytechnic Univ.,Hong Kong
4.Dept. of Ocean Science and Engineering,Southern Univ. of Science and Technology,Shenzhen,518055,China

Fernando，Dilum,De Waal，Leo,Jiang，Shuan,et al. Structural Behavior of Hybrid FRP-Concrete-Steel Double-Skin Tubular Arches: Experiments and Numerical Modeling[J]. Journal of Composites for Construction,2024,28(6).

Fernando，Dilum,De Waal，Leo,Jiang，Shuan,Teng，J. G.,Lin，Guan,&Li，Xi.(2024).Structural Behavior of Hybrid FRP-Concrete-Steel Double-Skin Tubular Arches: Experiments and Numerical Modeling.Journal of Composites for Construction,28(6).

Fernando，Dilum,et al."Structural Behavior of Hybrid FRP-Concrete-Steel Double-Skin Tubular Arches: Experiments and Numerical Modeling".Journal of Composites for Construction 28.6(2024).