Abstract:
The reliable anchoring of fiber reinforced polymer composite used in bridge cable and prestressed concrete structures is the key problem to be solved. The thermoplastic polypropylene resin has the excellent fracture toughness, hygrothermal/fatigue resistances, convenient processing and recycling, etc. Based on the heating melting cooling molding principle of thermoplastic resin, a kind of composite cable-anchor with stable size, excellent performance and self-locking structure was prepared through adopting the glass fiber reinforced polypropylene prepreg tape. The effects of prepreg tape winding layer number and arc angle on the ultimate bearing capacity, stress distribution and failure mode of cable-anchor structure were studied by tensile test and finite element simulation. It is found that the ultimate bearing capacity of cable-anchor component decreases with the increase of the arc angle, and increases firstly and then decreases with the increase of the winding layer. The finite element simulation is in good agreement with the experimental results, which verifies that the stress distribution of cable-anchor component of 10-layer prepreg tape with the arc angle of 13.5° is uniform and the optimum tensile properties were obtained. Finally, by summarizing and analyzing, the application prospects of the new integrated cable-anchor components in bridge cable, ground anchor structure and prestressed concrete structure were demonstrated.