Dehumidification structure and dehumidification system for cable saddle of cable-stayed bridge wire distribution pipe

Abstract

A dehumidification structure and a dehumidification system for a cable saddle of a cable-stayed bridge wire distribution pipe are disclosed. The dehumidification structure comprises a wire distribution pipe bundle and an end anchor fixedly connected to the end of the wire distribution pipe bundle, the wire distribution pipe bundle comprises a plurality of wire distribution pipes, steel strands arearranged in the wire distribution pipes, gaps are formed between the wire distribution pipes and the steel strands, and the end anchor comprises a hollow closed space; and the ends of the wire distributing pipes are fixedly connected to the end anchor, the steel strands in the wire distributing pipes penetrate through the closed space, a sealing device is arranged in the closed space, fills the whole closed space and surrounds the steel strands, vent pipes are arranged in the end anchor and connected with the exteriors of the end anchor, and vent grooves are further formed in the end anchor and connected with the vent pipes and the wire distributing pipes. The cable saddle capable of being inflated with dry air for dehumidification of the cable-stayed bridge wire distribution pipe is reasonable in structure and easy to implement; and a structure and a system capable of monitoring the humidity of the cable saddle of the wire distribution pipe in real time and dehumidifying are providedfor the cable saddle of the non-replaceable cable-stayed bridge wire distribution pipe, the service life of the cable saddle is prolonged, and the operation and use safety of a bridge is facilitated.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a dehumidification structure and a dehumidification method of a cable-stayed bridge split-tube type cable saddle. Background technique [0002] Separator tube saddles have been widely used in some cable-stayed bridges, also known as low-tower cable-stayed bridges. Separator tube saddles are generally pre-embedded and installed on the main tower of cable-stayed bridges. Steel strand stay cables are anchored to the box girders on both sides of the bridge tower after passing through the pre-buried cable saddles in the bridge tower. Compared with the replaceable stay cables, the split wire tube saddle is a non-replaceable component and a permanent component with the same life span as the bridge, so the protection of the split wire tube saddle is very important. And during the installation and construction process of the cable-stayed steel strands, due to the penetration i...

AI Technical Summary

Problems solved by technology

During the installation and construction of the cable-stayed steel strand, the coating layer on the inner wall of the cable saddle wire splitting tube will be damaged due to the penetration installation of the steel strand and the friction of the tension force.

[0003] The authorized announcement number is CN200955121Y, and the invention patent titled "bundle-type steel pipe assembly welding type sub-wire tube saddle for partial cable-stayed bridges" discloses a structure of a sub-wire tube saddle, but the disadvantages of this technology are: The hole of the wire splitting tube is not sealed, and humid air is easy to enter into the hole of the splitting tube during operation, which will cause corrosion on the inner wall of the splitting tube

[0004] The authorized announcement number is CN208899331U, and the invention patent titled "a partial cable-stayed bridge splitting pipe saddle with sealing protection function" discloses the technology of setting sealing protection devices at both ends of the splitting pipe saddle, but the The shortcoming of the technology is that the sealing filler must be injected after the installation of the steel strands of the stay cables, and the construction period of the stay cables is long, generally at least several months, during which it is inevitably affected by rain and snow. Due to the influence of weather, bridge position and water vapor evaporation, the moisture will inevitably enter the cable saddle’s split pipe hole. Therefore, even if the measures of sealing both ends of the cable saddle are adopted, there will still be damp water vapor inside the cable saddle’s split pipe hole, which will cause damage to the cable saddle. Permanent corrosion brings hidden dangers

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