Title

Strength And Ductility Of Hybrid Frp-Concrete Beam-Columns

Abstract

High strength-to-weight ratio and resistance to electro-chemical corrosion have made fiber-reinforced plastic (FRP) materials attractive to civil engineers. This paper presents a study on the beam-column behavior of a high-performance structural member made of concrete-filled FRP tubes (CFFT). The angle-ply FRP tube is a stay-in-place formwork, providing confinement as well as flexural and shear reinforcement. It also acts as a protective jacket for concrete core in harsh environments. A total of five 178 × 178 × 1,320 mm specimens were tested at various combinations of axial and transverse loads to develop a full moment-thrust interaction diagram for the hybrid column. In the compression control region, CFFT columns proved as strong as equivalent conventional reinforced concrete (RC) columns with as high as 6% reinforcement. Failure of CFFTs was ductile, and with considerable warning. Furthermore, toughness and energy-based ductility of CFFTs were quite comparable to those of conventional RC columns. It was also shown that the Euler-Bernouli beam theory is applicable to CFFTs, provided that composite action between the tube and the concrete core is fully developed. © ASCE,.

Publication Date

1-1-1999

Publication Title

Journal of Structural Engineering

Volume

125

Issue

10

Number of Pages

1085-1093

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1061/(ASCE)0733-9445(1999)125:10(1085)

Socpus ID

0032694779 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0032694779

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