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Title |
Flexural Behavior of RC Beams Strengthened with CFRP Plate Using Multi-directional Channel-type Anchorage System
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Keywords |
탄소보강판 ; 채녈형 단부정착장치 ; 부착파괴 ; 연성파괴 CFRP plate ; Channel-type anchorage system ; Debonding failure ; Ductile failure |
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Abstract |
The aim of this paper is to clarify the structural performance of RC beams strengthened with Carbon Fibre Reinforced Polymer(CFRP) plates using channel-type anchorage system. Twelve RC beams were specifically designed without and with a channel-type anchorage system, which was carefully detailed to enhance the benefits of the strengthening plates. All the twelve beams were identical in terms of their geometry but varied in their internal reinforcement, concrete strength. All the beams were tested under four point bending and extensively instrumented to monitor strains, cracking, load capacity and failure modes. The structural response of all the twelve beams is then critically analyzed in terms of deformability, strength and failure processes. It is shown that with a channel-type anchorage system, a brittle debonding failure of a strengthened beam can be transformed to an almost ductile failure with well-defined enhancement of structural performance in terms of both deformation and strength.
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