Construction process of filling type epoxy coating steel strand inhaul cables

Abstract

The invention discloses a construction process of filling type epoxy coating steel strand inhaul cables. The process is characterized by including the following steps of S1, making a preparation before cable hanging; S2, installing and tensioning steel strands, wherein traction installing and tensioning of the steel strands and the cable force averaging, classified tensioning and tensioning forcecalculating of the steel strands are included, the construction process of the cable force averaging and classified tensioning of the steel strands includes the step of cable force averaging and tensioning after cable hanging and tensioning of all the steel strands in each stay cable, an equivalent tensioning method is adopted for the cable force averaging, two stages of tensioning are included, the first stage of tensioning is conducted till 80% of the target cable force is reached, and the second stage of tensioning is conducted till 100% of the target cable force is reached; S3, ejecting clamping pieces; S4, installing accessories and conducting anticorrosion treatment, wherein installing of anti-loose pressing plates, installing of dampers, blocking of the bottoms and pipe openings ofbeam end embedded pipes, installing of extending pipes and waterproof covers and anticorrosion treatment of anchor heads are included. By means of the construction process, the stay cables can be rapidly and reliably replaced, and detailed standardized operation reference is provided for existing bridge stay cables.

Description

technical field [0001] The invention belongs to the technical field of cable installation, and in particular relates to a construction method for a filled epoxy-coated steel strand cable. Background technique [0002] The anti-corrosion problem of cable-stayed bridges is a worldwide problem. In recent years, with the continuous increase in the number of cable-stayed bridges, the problem of cable replacement is bound to become more and more prominent and attract more and more attention. Since the cables of cable-stayed bridges have been exposed to the atmosphere for a long time, and the current protective measures are not perfect, and there is no very detailed and standardized construction operation process for reference, how to replace the cable-stayed cables has become an urgent issue for bridge engineers to solve . Contents of the invention [0003] The purpose of the present invention is to solve the above technical problems, to provide a construction technology of fi...

AI Technical Summary

Problems solved by technology

Since the cables of cable-stayed bridges have been exposed to the atmosphere for a long time, and the current protective measures are not perfect, and there is no very detailed and standardized construction operation process for reference, how to replace the cable-stayed cables has become an urgent issue for bridge engineers to solve

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