| Corrosion free, high strength-to-weight ratio enable CFRP (Carbon Fiber Reinforced Polymer/Plastics) composites to be potential replacement for steel tendons in bridge and structural engineering applications. One of the obstacles for CFRP tendons to be widely used is regarding the methodology to anchor the CFRP tendons and to maintain the post-tensioning force during the service life of the structures. High ratios for tensile to compressive and to shear strength make it necessary to develop a new anchorage design concept for CFRP tendons.In this paper, a series of tests and analysis through finite element method have been done for developing two new types of anchorage system for CFRP tendon. The first is bond-type anchorage system that is characterized with three different bond medium: RFC, epoxy grave and ordinary concrete. During tests and analysis, the influence of bond length, surface shape of CFRP tendon, bond medium and the slope of inner wall of outer steel tube have been studied.Conventional wedge-type anchorage system for steel tendon must be ameliorated before it has been used for CFRP tendon because of the material particularity of CFRP tendon. In this paper, measures of increasing friction between CFRP tendon and inner face of wedge, decreasing radial force loaded on CFRP tendon within the length in anchor have been taken to improve anchor performance, and the influence to anchor performance of anchor length, inner angle of barrel and the force on wedge have been studied.Subsequently, anchor performances of the two type anchorage system mentioned above have been analyzed through finite element program-Marc.At last, this paper puts forward the effective, economical, and easily fabricated and assembled anchor method for CFRP tendon.
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