Stay cable structure of stay cable bridge utilizing ventilation steel pipes for dehumidification

Abstract

In recent years, safety accidents caused by corrosion of an inner portion of a stay cable body of a stay cable bridge due to dampness are common, great economic losses are caused, and meanwhile safetyof the bridge is greatly reduced. The invention relates to a stay cable structure of a stay cable bridge utilizing ventilation steel pipes for dehumidification. The stay cable structure is characterized by comprising parallel steel wires (1), the ventilation steel pipes (2) and surface treatment (3). The ventilation steel pipes in a stay cable and the parallel steel wires are made of the same material, and through holes are punched in different positions of the ventilation steel pipes and evenly distributed in the stay cable. When the air in the stay cable is damp, a dry gas with certain pressure is injected into the ventilation steel pipes in the stay cable to dehumidify the main cable in a segmented mode so that the stay cable bridge cable can keep the air in the stay cable to be dry, aproblem that the stay cable is corroded due to a fact that the damp air in the stay cable is difficult to remove completely is solved, a stay cable replacement frequency is reduced, and the safety ofthe bridge is improved.

Description

technical field [0001] The invention relates to the field of stay cable structures of cable-stayed bridges, in particular to a stay-cable structure of stay-cable bridges using ventilated steel pipes for dehumidification. Background technique [0002] Aiming at the problems existing in the dehumidification and anticorrosion technology of cables of cable-stayed bridges, the present invention provides a cable structure of cable-stayed bridges using ventilated steel pipes to dehumidify the cables to solve the problem that the moist air inside the cables of cable-stayed bridges is difficult to remove. [0003] In traditional dehumidification systems, dry air is usually poured into the inside of the cable from the outside to the inside at a certain pressure. However, due to the small gap between the parallel steel wires inside the cable, it is difficult for the dry air poured in from the outside to enter the gap, and the humid air still creates a corrosive environment in the cable...

AI Technical Summary

Problems solved by technology

However, due to the small gap between the parallel steel wires inside the cable, it is difficult for the dry air poured in from the outside to enter the gap, and the humid air still creates a corrosive environment in the cable, and the process of corrosion inside the cable In the process, the oxidized substances produced by the rusted parts between the materials fill the pores and cracks, making it more difficult for the subsequent drying air to intervene, thus forming a vicious circle

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