ABSTRACT
The transverse and interlaminar shear strength of carbon fiber reinforced composites (CFRP) is smaller than its tensile strength, and the traditional clip-type anchorages used to anchor steel cables will exert a large occlusal force on the tendons. As a result, the CFRP tendon fails prematurely and cannot fully exert its high axial strength. The composite anchorage avoids the large stress concentration generated by the mechanical clamping anchorage at the anchorage port, and also avoids the bond-slip damage that is prone to occur in the bond-type anchorage, so that the high-strength characteristics of CFRP tendons can be fully utilized. A finite element model of a new type of composite anchorage was constructed, the failure mode of the anchorage, the ultimate load of the tendons, and the slip deformation were explored, and the stress-strain curve and the load-slip curve were obtained. The length of the steel sleeve, the inclination angle of the clip, Influence of parameters such as preload on the pull-out test results of the composite anchorage. The finite element results show that the anchoring efficiency increases with the increase of the bond length, and the anchoring efficiency increases with the increase of the inclination angle of the clip. Increasing the pre-tightening force helps to enhance the anchoring efficiency.
