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An evaluation method for the air supply and dehumidification system inside the main cable of the suspension bridge

A suspension bridge and air supply technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of low energy consumption of air supply, lack of evaluation methods, etc., and achieve accurate results

Active Publication Date: 2021-03-30
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The air supply dehumidification system inside the main cable has the advantages of low air supply energy consumption, high dehumidification efficiency, and complete dehumidification for large-sized main cable sections, but there is still a lack of effective evaluation methods

Method used

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  • An evaluation method for the air supply and dehumidification system inside the main cable of the suspension bridge
  • An evaluation method for the air supply and dehumidification system inside the main cable of the suspension bridge
  • An evaluation method for the air supply and dehumidification system inside the main cable of the suspension bridge

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Experimental program
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Effect test

Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 , Embed stainless steel air supply pipes inside the main cable of the suspension bridge, and open small ventilation holes on the pipes. Air supply equipment is used to deliver dry air to the inside of the air supply pipeline. The dry air diffuses into the interior of the main cable through the small ventilation holes, and exchanges heat and quality with the humid air in the main cable to form saturated humid air. After the saturated humid air reaches a certain pressure Exhaust from the vent cable clamp installed on the main cable. After multiple air intake and exhaust processes, the dry air gradually takes away the moisture inside the main cable to achieve the purpose of dehumidification and moisture reduction.

[0020] During the air supply dehumidification process inside the main cable, the resistance loss of the dry air in the air supply de...

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Abstract

The invention discloses an evaluating system of an air supply and dehumidifying system in a suspension bridge main cable. The air supply and dehumidifying system in the suspension bridge main cable comprises an air supply device for conveying dry air and an air supply pipeline with a plurality of small vent holes. The air supply pipeline is connected to the air conveying device and embedded in thesuspension bridge main cable. The outer portion of the main cable is sleeved with a plurality of cable clamps including the ordinary cable clamps and the exhaust cable clamps. The air supply and dehumidifying system in the suspension bridge main cable is evaluated according to the total resistance loss generated when the dry air flows in the suspension bridge main cable. The evaluating system hasthe advantages that the air supply and dehumidifying system in the suspension bridge main cable is evaluated according to the total resistance loss generated when the dry air flows in the suspensionbridge main cable, so the structure reasonability of the air supply and dehumidifying system in the main cable, the reliability of air inlet parameter setting and the like are ensured, and the resultis precise.

Description

technical field [0001] The invention relates to the technical field of cable dehumidification of suspension bridges, in particular to an evaluation method for an internal air supply dehumidification system of a main cable of a suspension bridge. Background technique [0002] The main cables and suspenders of a suspension bridge are important load-bearing and force-transmitting components respectively, so the durability of the cable components directly affects the service life of the long-span suspension bridge. In recent years, inspections of the main cables and slings of some long-span suspension bridges have found that the corrosion of high-strength steel wires inside the main cables and slings of suspension bridges is quite serious. The degree of degradation and durability problems are very prominent. For details, see "Research Review on Mechanism of Anti-corrosion and Internal Temperature and Humidity Changes of Long-span Suspension Bridge Main Cables" and "Recent Progres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B21/00E01D19/16G06F17/15
CPCE01D19/16F26B21/004G06F17/15
Inventor 陈巍沈锐利厉萱万田保王忠彬
Owner SOUTHWEST JIAOTONG UNIV