Title

Failure Of Over-Reinforced Hybrid Fiber Reinforced Polymer Concrete Beam Columns

Keywords

Columns; Core; Ductility; Durability; Fiber reinforced polymer; High· strength concretes; Tubes

Abstract

Concrete-filled fiber reinforced polymer (FRP) tubes provide an alternative to conventional reinforced and prestressed concrete columns. The tube helps tum normal strength concrete core into a high performance concrete, i.e., one with high strength, ductility, and durability. The over-reinforcement in concrete-filled tubes helps avoid split rupture of the FRP reinforcement in tension, which is catastrophic in nature. A total of 8 concrete-filled FRP tubes were tested as beam-columns under a combination of axial and flexural loads. The tubes were 9 feet long, and had an outside diameter of 13 11/16 in. with a wall thickness of about 0.55 in.. The study showed that over-reinforced concrete-filled FRP tubes generally behave well as beam columns. They deflect to a lesser extent than the corresponding under-reinforced sections. They are also more efficient than under-reinforced sections, because a smaller portion of their sectional capacity is consumed by secondary moments and P-il effects. Their failure, while in compression, is considered to be gradual and progressive.

Publication Date

8-1-1999

Publication Title

American Concrete Institute, ACI Special Publication

Volume

SP-188

Number of Pages

125-134

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

85111468233 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85111468233

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