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A kind of dehumidification method of suspension bridge main cable

A technology for suspension bridges and main cables, applied to suspension bridges, bridges, bridge parts, etc., can solve the problems of large gas flow resistance, narrow steel wire gaps, and high costs, and achieve the effects of reducing air flow resistance, less power consumption, and low air pressure

Active Publication Date: 2022-07-01
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the narrow space between the steel wires of the main cable and the large gas flow resistance, the whole bridge needs multiple sets of dehumidification equipment, which consumes a lot of power and costs high

Method used

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  • A kind of dehumidification method of suspension bridge main cable
  • A kind of dehumidification method of suspension bridge main cable
  • A kind of dehumidification method of suspension bridge main cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment shows the case where the main cable has a bottom cavity, and a communication pipe connects the two adjacent cavities across the cable clip to form a bottom airflow channel. see figure 1 — Figure 7 ,and Figure 14 .figure 1 A schematic diagram of the cross-section of the main cable, the surface of the wire bundle 10 of the main cable is wound with round steel wires after the cable is tightened. The transparent stainless steel tube 12 forms a support member, which is closely attached to the steel wire at the bottom of the steel wire bundle 10, and then wound with the wrapping tape 11, thereby forming the bottom cavity 13. See the schematic diagram of the transparent stainless steel pipe 12 Figure 5 , there are holes 15 on the pipe wall, the diameter of the holes 15 is equal to the radius of the transparent stainless steel pipe 12, the longitudinal spacing of the holes 15 is the diameter of the transparent stainless steel pipe 12, these holes 15 are sp...

Embodiment 2

[0048] This embodiment is a modification of the first embodiment, and the communication pipe 14 is removed, which avoids the installation work and maintenance work of the communication pipe 14. See Figure 8 and Figure 9 . The schematic diagram of the left end face of the cable clamp is shown in Figure 8 , in order to ensure the communication between the bottom cavities 13 on both sides of the cable clip, longitudinal through holes 19 are added in the cable clip. The schematic diagram of the connection between the two ends of the cable clip and the wrapping tape 11 is shown in Figure 9 , The appearance of the main cable is simple, the bottom airflow channel is smoother, and the resistance is smaller.

Embodiment 3

[0050] This embodiment is an improved form of Embodiment 2, and a cavity is added to the top of the main cable, see Figure 10 A schematic cross-sectional view of the main cable, the main cable has a bottom cavity 13 and a top cavity 20, and the top cavity 20 has a cavity support composed of a transparent stainless steel tube 12. Figure 11 It is a schematic diagram of the left end face of the cable clip, considering that the end slot 8 in the conventional cable clip has no practical value in this solution and has been cancelled. Figure 12 It is a schematic diagram of the connection between the two ends of the cable clip and the wrapping tape 11. In order to facilitate the top cavity 20 to form a top airflow channel, a communication pipe 14 is used to communicate the cavities at both ends of the cable clip. The top airflow channel has an air valve 28 at the farthest end of the corresponding blower, see Figure 16 ; In the daytime, when the humidity in the top airflow channel...

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Abstract

The invention discloses a dehumidification method for the main cable of a suspension bridge. The surface of the main cable is sealed and wrapped with a wrapping tape, and the wrapping tape and the inner main cable steel wire form a cavity at the top and bottom, which is conducive to the flow of dry gas. It cleverly utilizes the cycle of rising and falling of moisture inside the main cable day and night. When the moisture accumulates in the cavity, the drying gas is introduced to discharge the moisture. The drying gas flow resistance is small, the required running time is short, and the energy consumption is low. There is no need to install a blower on the upper part of the bridge tower, which saves investment; and the drying gas can flow at low pressure, and the wrapping belt is not easy to break, so there is no need to install special air intake cable clips and Exhaust cable clamps, and corresponding piping systems, reduce overhead work during system maintenance and reduce maintenance costs.

Description

technical field [0001] The invention relates to the anticorrosion of suspension bridge main cable wires in bridge engineering, in particular to a dehumidification method for suspension bridge main cables. Background technique [0002] The main cable is one of the most important stress-bearing components of a suspension bridge and is called the "lifeline". It has been exposed to the atmospheric environment for a long time and has been eroded by various unfavorable environments. At the same time, since the main cable is a non-replaceable component, the service life of the main cable directly affects the service life of the suspension bridge. [0003] The usual main cable protection system is to coat the surface of the main cable with a layer of protective putty, such as red red or zinc powder paste, wrap it with round galvanized soft steel wire, and then carry out anti-corrosion coating on the outer surface of the wound steel wire. . This traditional main cable protection sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/16E01D11/02E01D22/00F26B21/00
CPCE01D19/16E01D11/02E01D22/00F26B21/004
Inventor 魏建东郝放戚丹丹陈家模齐清华宋博
Owner ZHENGZHOU UNIV
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