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http://dx.doi.org/10.12989/sem.2015.53.6.1067

Experimental and analytical investigations for behaviors of RC beams strengthened with tapered CFRPs  

Kim, Naeun (Department of Architectural Engineering, Ewha Womans University)
Kim, Young Hee (Department of Architectural Engineering, Ewha Womans University)
Kim, Hee Sun (Department of Architectural Engineering, Ewha Womans University)
Publication Information
Structural Engineering and Mechanics / v.53, no.6, 2015 , pp. 1067-1081 More about this Journal
Abstract
This study investigates structural and mechanical behaviors of RC (Reinforced concrete) beams strengthened with tapered CFRP (Carbon fiber reinforced polymer) sheets having various configurations. Toward this goal, experiments are performed on RC beams strengthened with four layers of CFRP sheets and each layer of the CFRP is prepared to have different length. Experimental results show that tapered CFRPs have better strengthening effect than non-tapered CFRP sheets and maximum loads of the beams with tapered CFRPs are governed by the length of first CFRP layer rather than total length of CFRP layers. In addition, analyses are performed using FE (Finite Element) models including cohesive elements to predict debonding behaviors between FRP and concrete elements. The predicted results from the FE models show good agreement with the experimental results.
Keywords
Finite Element Method (FEM); fiber reinforced; composites; analytical method; experimental investigation;
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Times Cited By KSCI : 2  (Citation Analysis)
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