Abstract: In this paper， the stress distribution and anchoring mechanism of three typical anchoring systems were studied for the anchoring failure of carbon/glass fiber reinforced polymer composite rods. The results indicated that the anchoring capacity of the carbon fiber layer anchoring system was low due to the interfacial debonding and cross-section weakening. The mechanical anchoring system easily generated an initial compressive damage and stress concentration for the rod. The adhesive type anchoring system produced a debonding failure due to the low bonding strength of the rod-adhesive interface. Aiming at the problems of section weakening， the stress concentration and interfacial debonding existing in the above three anchoring systems， this study proposed a wedge-bonded compound anchoring system considering of the wedge extrusion and resin bonding. The results from the finite element simulation and tensile test indicated that the stress distribution in the anchor of the wedge-bond compound anchor system was uniform， the rod underwent a burst failure， and there was no slippage in the anchor. The ultimate anchor bearing capacity of the anchor system was 360.1 kN. This effectively solves the anchor failure problem in the composite rods.

Key words: carbon-glass fiber hybrid, composite rod, anchorage performance, finite element simulation, tensile test