Method for monitoring and evaluating service state of fiber reinforcement cable for bridge

The invention discloses a method for monitoring and evaluating the service state of a fiber reinforcement cable for a bridge, and the method comprises the steps: S1, selecting fibers and a matrix, determining the volume content of the fibers, arranging single-mode optical fibers on the cross section of the fiber reinforcement cable according to a certain rule, and molding the fibers, the matrix and the single-mode optical fibers to form the fiber reinforcement cable, according to the design bearing capacity, a certain number of fiber bars are arranged in parallel according to a regular hexagon, and the fiber bar pulling sling for the bridge is formed; s2, carrying out high-spatial-resolution strain testing on the fiber reinforcement cable by adopting a millimeter-level high-spatial-resolution strain sensing technology when the fiber reinforcement cable bears the effects of a constant load and a live load, collecting strain data of all optical fibers in the fiber reinforcement cable, analyzing a strain curve,