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Abstract

In the case of RC members strengthened with CFRP, two kinds of failure will occur: a premature failure which is a debonding failure of anchorage zone can be detected in addition to the debonding failure mode which is induced by the crack occurrence of RC beam. The debonding failure of the anchorage zone means the CFRP cannot be used efficiently, and even leads to the inactivation of RC beam strengthened with CFRP. The test and FEM analysis give regularities of distribution of the shear stress of debonding failure of anchorage zone of RC beam strengthened with CFRP. The regularities of distribution of the stress of debonding failure mode, which is induced by the crack occurrence of RC beam, are simulated by FEM analysis. The results will provide scientific laws for the prevention of premature failure of anchorage zone and sufficient utilization of tension strength of CFRP.

Keywords

carbon-fiber reinforced plastic (CFRP)debonding failure finite element analysis debonding criterion.

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References

Smith, S.T. and Teng, J.G. ( 2002). FRP-Strengthened RC Beam-I: Review of Debonding Strength Models, Engineering Structure, 24(4): 385-395.

Rabinovitch, Oded (2004). Fracture-Mechanics Failure Criteria for RC Beams Strengthened with FRP Strips-a Simplified Approach , Composite Structures, 64(3/4): 479-492.

Au, C. and Büyüköztürk, O. (2006). Debonding of FRP Plated Concrete: A Tri-layer Fracture Treatment, Engineering Fracture Mechanics, 73(3): 348-365.

Ascione, L. , Berardi, V.P. , Feo, L. and Mancusi, G. ( 2005). A Numerical Evaluation of the Interlaminar Stress State in Externally FRP Plated RC Beams, Composites: Part B, 36: 83-90.

Garden, H.N. and Hollaway, L.C. (1998). An Experimental Study of the Influence of Plate End Anchorage Carbon Fibre Composite Plates used to Strengthen Reinforced Concrete Beams, Composite Structures , 2: 175-188.

Lee, H.K. (2004). Effectiveness of Anchorage in Concrete Beams Retrofitted with Sprayed Fiber-reinforced Polymers, Journal of Reinforced Plastics & Composites, 23(12): 1285-1300.

Lin, H.-J. and Chen, C.-T. (2001). Strength of Concrete Cylinder Confined by Composite Materials, Journal of Reinforced Plastics & Composites, 20(18): 1577-1600.

Huang, D. and Lyons, J. ( 2005). Finite Element Analysis of Test Specimens to Assess Composite-Concrete Bond Durability, Journal of Reinforced Plastics & Composites , 24(13): 1387-1405.

Huang, D. and Lyons, J. ( 2007). Numerical Stress Analysis of the Bond between a Reinforced Concrete T-Beam and FRP Sheets, Journal of Reinforced Plastics and Composites, 26(12): 1225-1237.

Test and FEM Analysis of Debonding Failure of RC Beam Strengthened with CFRP

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