Analytical Models for Concrete Confined with FRP Tubes

by Jurgen Becque, Formerly, Graduate Student; Dept. of Civ. Engrg., Univ. of Manitoba, Winnipeg, Canada,
Anil K. Patnaik, (M.ASCE), Asst. Prof.; Dept. of Civ. and Envir. Engrg., South Dakota School of Mines and Technol., Rapid City, SD 57701-3995,
Sami H. Rizkalla, (F.ASCE), Distinguished Prof. of Civ. Engrg. and Constr., Dir.; Constructed Facilities Lab., North Carolina State Univ., Raleigh, NC 27695-7533,

Serial Information: Issue 1, Pg. 31-38

Document Type: Journal Paper

Abstract: Concrete columns encased in fiber-reinforced polymer (FRP) tubes offer an attractive solution to enhance behavior of concrete in terms of strength as well as ductility. Analytical models for development of stress-strain curves for concrete confined with FRP are proposed in this paper. The predicted stress-strain curves for confined concrete using the proposed models are compared with those of tests for concrete specimens confined with FRP. It is demonstrated that the proposed models predict the stress-strain behavior of confined concrete very well. Based on the confidence gained in the proposed models, the effects of using different fibers, the presence of voids, and the number of layers are established.

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