Experimental and analytical investigations for behaviors of RC beams strengthened with tapered CFRPs
- 주제(키워드) Finite Element Method (FEM) , fiber reinforced , composites , analytical method , experimental investigation
- 등재 SCIE, KCI등재, SCOPUS
- 발행기관 TECHNO-PRESS
- 발행년도 2015
- URI http://www.dcollection.net/handler/ewha/000000114792
- 본문언어 영어
초록/요약
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.
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