Sealing corrosion proof protection method of rope-suspension bridge cable system

Abstract

The invention discloses a sealing and anti-corrosion protection method of a suspension bridge cable system, and belongs to an anti-corrosion protection method of a bridge cable. The method helps divide the whole cable system into 7 types of surfaces: an outer surface of a main cable of a wire wrapping section; the outer surface of the main cable of a non-wire wrapping section; the outer surface of a main cable saddle exposing a strand; the outer surfaces of a cable strand inside an anchor chamber, a sling wire rope, as well as a railing rope and a side rope of a maintaining roadway; the outer surfaces of a cable clamp, a cable saddle (sleeve) and a saddle, and exposed surfaces of bolts and nuts; the outer surfaces of an anchor cup, a sling clamp, a sling shock mount, and columns and brackets of the maintaining roadway; and gap sealing surfaces of the cable clamp, a cable jacket girth seam, an abutted seam and a top saddle opening. The 7 types of the surfaces are treated by different methods, and the sealing and anti-corrosion method is complete. In the method, novel sealing materials and anti-corrosion paints are used, which has good sealing performance, long anti-corrosion service life and high strength, and ensures the durability of the suspension bridge cable system.

Description

technical field [0001] The invention relates to a cable anticorrosion protection method, in particular to a sealing anticorrosion protection method for a cable system of a suspension bridge. Background technique [0002] The cable system of the suspension bridge is the main load-bearing structure of the whole bridge. At present, the main cable of the cable system is composed of a certain number of steel wire bundles, and the materials used for other structures of the cable system are mostly steel. Steel is easily corroded in the natural environment. In order to ensure the safety and service life of the bridge, the entire cable system must be sealed and protected against corrosion. [0003] Chinese invention patent "Protection Method and Main Cable Protection Structure of Suspension Bridge Main Cable System", ZL99119397.0, discloses a protection method for suspension bridge main cable, which includes a main cable composed of multiple strands of high-strength galvanized steel ...

AI Technical Summary

Problems solved by technology

In this patent, the anti-corrosion treatment of the inner layer of the main cable steel wire uses a vulcanized aliphatic chain polyurethane sealant to replace the non-vulcanized rubber non-drying sealant described in ZL99119397.0, but does not use an anti-corrosion primer for the main cable galvanized steel wire Applying the sealant directly will affect the adhesion between the sealant and the substrate, and the comprehensive anti-corrosion performance is not high. In addition, the weather resistance of the polyurethane sealant is still not strong enough, and the anti-corrosion life of this protection method is still not high enough.