Rope-suspension bridge cable system anti-corrosive protecting method and cable system anti-corrosive protecting structure

Abstract

The invention discloses a method for the antiseptic protection of a cable system of a suspension bridge. The cable system comprises a main cable consisting of steel wire bundles formed by multi-strands of high-strength zinc-plated steel wires, a main saddle on the top part of a cable tower, a loosening-cable saddle on the near anchorage end, a plurality of cable clips fixed on the main cable and suspension cables fixed on the cable slips, wherein the main cable comprises a wire wound section main cable section and a non-wire wound section main cable section; the wire wound section main cable orderly undergoes the following treatments: (A) the main cable undergoes the pre-sealing dehumidification treatment; (B) the outer surface of the main cable undergoes the inner-layer antiseptic treatment; (C) a layer of steel wires or a belt material winding layer is wound; (D) the outer surface of the winding layer undergoes the outer layer protective treatment. In the invention, before steel wire bundles of the main cable are coated, the main cable system undergoes the pre-sealing dehumidification treatment, thereby removing water and moistures already existed in the main cable, eliminating the local corrosion phenomenon of the steel wires of the main cable started from the inner part caused by water originally existed in the main cable and ensuring the achievement of expected effects in the protection of the main cable.

Description

technical field [0001] The invention relates to an anti-corrosion protection method for a suspension bridge cable system and a cable system protection structure obtained by the method. Background technique [0002] The main cable supported on the tower saddle and loose saddle on the modern suspension bridge is connected to the bridge deck box girder through the sling fixed on the cable clamp, which is the load-bearing structure of the whole bridge, that is to say, the main cable is the main cable of the suspension bridge. lifeline. The main cable is usually composed of dozens or even hundreds of steel wire bundles, which are squeezed into strands with a generally circular cross-section by cable clamps. It is very important to take effective anti-corrosion protection for the main cable system. [0003] Chinese Invention Patent ZL 99119397.0 Invention Patent Publication, discloses a method for anti-corrosion of the main cable of a suspension bridge, which is coated on the ou...

AI Technical Summary

Problems solved by technology

Furthermore, non-vulcanized sealants do not provide a complete seal after filament wrapping

Affected by long-term high temperature changes and alternating loads, at the same time, the moisture that existed before the main cable was sealed during cable strand erection and was trapped in the main cable is difficult to overflow after sealing, so that it evaporates during the day when the temperature is high and at night Condensation when the temperature is low, repeated effects, may cause seal failure, resulting in a decrease in anti-corrosion performance

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