Experimental behaviour of hybrid FRP-concrete-steel double-skin tubular arches

S. Jiang, D. Fernando*, J. G. Teng, M. Heitzmann, G. Angliss

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Hybrid FRP-concrete-steel double-skin tubular members (DSTMs) are a recent development that exploits the advantages of FRP composites (e.g., corrosion resistance, high strength-to-weight ratios and tailorability of material properties) to achieve high-performance and durable structures. Hybrid DSTMs consist of an annular layer of concrete sandwiched between an outer FRP tube and an inner steel tube. This paper presents a preliminary experimental study designed to investigate the feasibility of using the DSTM cross-section in arches for use in bridge construction (i.e. double-skin tubular arches or DSTAs). The fibres of the outer FRP tube are oriented close to the hoop direction to provide confinement to the concrete annulus. The inner steel tube, while also providing confinement to the concrete annulus, is mainly used to provide the steel tensile reinforcement for the section to resist bending. The inner steel tube also acts as propping during the construction process while the outer FRP tube serves as the formwork during concrete casting, thus considerably simplifying the construction process and reducing the labour cost. The experimental programme presented in this paper consisted of three tests on hybrid DSTAs subjected to two closely-spaced point loads near the mid-span covering two different FRP tube thicknesses and two steel tube locations (i.e., concentric and eccentric steel tube positions). The experimental results are presented and interpreted to understand the behaviour of hybrid DSTAs, particularly how the FRP tube thickness and inner steel tube eccentricity affect the behaviour of hybrid DSTAs.

Original languageEnglish
Title of host publicationProceedings of the 8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016
EditorsJ.G. Dai, J.G. Teng
PublisherDepartment of Civil and Environmental Engineering and Research Institute for Sustainable Urban Development, The Hong Kong Polytechnic University
Pages687-694
Number of pages8
ISBN (Electronic)9789881448026
Publication statusPublished - 2016
Event8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016 - Hong Kong, China
Duration: 14 Dec 201616 Dec 2016

Publication series

NameProceedings of the 8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016

Conference

Conference8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016
Country/TerritoryChina
CityHong Kong
Period14/12/1616/12/16

Keywords

  • Bridge construction
  • Double-skin tubular arch (DTSA)
  • Experiments
  • FRP tube
  • Steel tube

Fingerprint

Dive into the research topics of 'Experimental behaviour of hybrid FRP-concrete-steel double-skin tubular arches'. Together they form a unique fingerprint.

Cite this