CN104695325B - A kind of sling of suspension bridge preserving method and structure - Google Patents
A kind of sling of suspension bridge preserving method and structure Download PDFInfo
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- CN104695325B CN104695325B CN201510111437.7A CN201510111437A CN104695325B CN 104695325 B CN104695325 B CN 104695325B CN 201510111437 A CN201510111437 A CN 201510111437A CN 104695325 B CN104695325 B CN 104695325B
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- hoist cable
- air
- sling
- monitoring case
- outlet slit
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A kind of sling of suspension bridge preserving method and structure.A kind of sling of suspension bridge anticorrosion structure, comprising: the anchor head at hoist cable two ends wherein one end is air intlet, the other end is air outlet slit, is connected into an air duct in hoist cable；Air intlet and air outlet slit respectively connect one for monitoring the monitoring case of the humiture of gas, pressure, and two monitoring casees are all connected with air source by valve；Air source is clean dry air or noble gas.The invention discloses a kind of sling of suspension bridge preserving method, utilize clean dry air or noble gas to flow in the space of sling steel wire, be full of inside anchor head, actively prevent sling steel wire and anchor head corrosion.It is filled with pressure air inside hoist cable, prevents external corrosion material from entering.When hoist cable protective layer goes wrong, air pressure variations, by monitoring case feedback information, provides for maintenance management and instructs.This structure has raising hoist cable antiseptic power, extends the life-span, the advantage reducing maintenance cost.
Description
Technical field
The present invention relates to bridge technical field of anticorrosion, use active preserving method to realize filling air more particularly to one and sling of suspension bridge is carried out antiseptical structure.
The invention still further relates to a kind of sling of suspension bridge preserving method.
Background technology
Sling of suspension bridge corrosion is a difficult problem for a bridge industry, although hoist cable can be changed, but its cost changed is high, and the anticorrosion strengthening hoist cable is significant.
The main cause that hoist cable is corroded is protective layer cracking, anchor head water inlet etc.; but for the time gone wrong, place, degree etc.; have no way of finding out about it; can only lean on and carry out hoist cable checking some information of acquisition; but the corrosion condition of detection hoist cable is still extremely difficult and costliness; for the corrosion of anchor head, cannot detect especially.
Conventional hoist cable anti-corrosion measure is at steel wire outer layer protective mulch, has the several ways such as tape wrap and hot extrusion PE, for anchor head position, then takes to irrigate the methods such as sealing.But these anticorrosion means, broadly fall into the passive aseptic technic of blocking type, when anticorrosion is impaired or loses efficacy, it is the most unknowable, can only be after generation infringement of losing efficacy, by the detection of infringement could be found that anticorrosion lost efficacy, it is impossible to avoid corrosion-damaged generation.Often there is space in the perfusion at anchor head position, but could find when only removing hoist cable anchor head.For the corrosion of anchor head, the most damaging detection mode.
Active anticorrosion is the aseptic technic of a kind of advanced person, refers to pass through advance preventing, it is to avoid or reduce the ability that corrosion occurs.Owing to being mode actively, when anticorrosion is affected or loses efficacy, producing feedback immediately, this feedback can instruct anticorrosion to overhaul, and repairs in time, as long as repairing in time, shielded structure will not be produced material injury.
Summary of the invention
It is an object of the invention to provide a kind of sling of suspension bridge anticorrosion structure.
It is yet another object of the invention to provide a kind of sling of suspension bridge preserving method.
The present invention overcomes the problem that anticorrosion is unpredictable, can not monitor, and brings up to the degree in anticorrosion source from anticorrosion, stops the probability that corrosion occurs, and possesses the ability can predicted, can monitor.
For achieving the above object, the sling of suspension bridge anticorrosion structure that the present invention provides, comprising:
The anchor head at hoist cable two ends wherein one end is air intlet, and the other end is air outlet slit, is connected into an air duct in hoist cable；
Air intlet and air outlet slit respectively connect one for monitoring the monitoring case of the humiture of gas, pressure, and two monitoring casees are all connected with air source by valve；
Air source is clean dry air or noble gas.
Described sling of suspension bridge anticorrosion structure, wherein, when hoist cable is double hoist cable, the air outlet slit of the first hoist cable and the second hoist cable is connected, and the air intlet of the first hoist cable and the second hoist cable respectively connects a monitoring case.
Described sling of suspension bridge anticorrosion structure, wherein, air intlet and air outlet slit respectively connect monitoring case by pipeline.
Described sling of suspension bridge anticorrosion structure, wherein, is provided with Temperature Humidity Sensor and pressure transducer in monitoring case, and is provided with data acquisition interface.
Described sling of suspension bridge anticorrosion structure, wherein, valve is mechanical valve.
Described sling of suspension bridge anticorrosion structure, wherein, air source is dehumidifier or nitrogen making machine.
The sling of suspension bridge preserving method that the present invention provides, comprises the following steps:
1) open air intlet and the valve of air outlet slit monitoring case, open air source and enter the monitoring case of air intlet；
2) air source is full of anchor head in the air intlet of hoist cable enters hoist cable, discharges hoist cable from air outlet slit, and is detected humiture, the pressure of gas by the monitoring case at hoist cable two ends；
3) air humidity recorded until air outlet slit monitoring case closes the valve of air outlet slit monitoring case after being reduced to the numerical value required；
4) enter the air mass flow of hoist cable according to the Data Control of hoist cable two ends monitoring case detection and keep the air pressure in hoist cable.
Described method, wherein, when hoist cable is double hoist cable, air source enters in hoist cable through the air intlet of the first hoist cable, enter the air outlet slit of the second hoist cable from the air outlet slit of the first hoist cable, and entered monitoring case recovery gas after hoist cable by the air intlet of the second hoist cable；
Humiture, the pressure of gas are detected by the monitoring case of the air intlet connection of the first hoist cable and the second hoist cable, according to the air pressure in the first hoist cable and the air mass flow of the Data Control entrance hoist cable monitoring case detection of the second hoist cable and holding hoist cable.
Described method, wherein, enters the air mass flow of hoist cable by Valve controlling and keeps the air pressure in hoist cable.
The invention have the advantages that
1) utilize air or the noble gas of clean dried, do not corrode necessary moisture or oxygen, prevent the probability that corrosion occurs；
2) monitoring to air, it is possible to achieve the monitoring of antiseptic effect, once occurs that air leaks, and hoist cable can't be corroded immediately, but problem is exposed through, solves problem more operability；
3) perfusion of anchor head can cancel, even continuing perfusion, when effect is bad, also can be full of by clean dry air or noble gas, do not have Corrosion Potential in space；
4) original hoist cable protective layer is without changing, and has air pressure inside whole hoist cable, and when crackle or damage occurs in external protection, air monitering will provide warning feedback, it is provided that the monitoring of protective layer, the most indirectly provides the corrosion monitoring of hoist cable simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Symbol description in accompanying drawing:
1,15 air source, 2,14 valves, 3,13 monitoring casees, 4,12 air lines, 5,7,9,11 air ports, 6,10 hoist cables, 8 anchor heads.
Detailed description of the invention
The sling of suspension bridge anticorrosion structure of the present invention, can apply to single hoist cable and the anticorrosion of double hoist cable.It is respectively provided with air intlet and the air outlet slit of straight-through steel wire near the anchor head of hoist cable two ends, in hoist cable, forms an air duct.During single hoist cable, the air intlet of hoist cable and air outlet slit all respectively connect the monitoring case of a sealing by air line, and two monitoring casees are all connected to air source by respective valve.During double hoist cable, being connected by the air outlet slit of two hoist cables, the gas of the air intlet input of a hoist cable flows out through another hoist cable from which.
It is further described as invention below in conjunction with accompanying drawing.
Refer to Fig. 1, be the anticorrosion structure of the double hoist cable of the present invention.The air outlet slit 7 of the first hoist cable 6 connects with the air outlet slit 9 of the second hoist cable 10, and at this moment the air outlet slit 9 of the second hoist cable 10 becomes air intlet, and the air intlet 11 of the second hoist cable 10 becomes air outlet slit.For avoiding confusion, still it is called air outlet slit 9 and the air intlet 11 of the second hoist cable 10 of the second hoist cable 10.
The air intlet 5 of the first hoist cable 6 and the air outlet slit 11 of the second hoist cable 10 are respectively by air line 4, the 12 monitoring casees 3 respectively connecting a sealing, 13, two monitoring casees 3, 13 respectively by valve 2, 14 with air source 1, 15 connect, it is pressed into from the clean dry air of air source 1 or noble gas by the air intlet 5 of the first hoist cable 6 that (clean dry air can come from dehumidifier, noble gas can come from nitrogen making machine), after being regulated by valve 2, its flow enters monitoring case 3, it is provided with Temperature Humidity Sensor and pressure transducer in monitoring case 3, humiture to gas, the data such as pressure carry out detecting and pass through its result of data acquisition interface output display.
The air intlet 5 that clean dry air or noble gas are located at first hoist cable 6 one end through monitoring case 3 by air line 4 entrance enters in the first hoist cable 6, air flows in the first hoist cable 6, and the position such as full anchor head 8, discharge the air outlet slit 9 being again introduced into second hoist cable 10 one end from the air outlet slit 7 of first hoist cable 6 other end, and discharge from the air intlet 11 of second hoist cable 10 other end.Expellant gas enters monitoring case 13 through air line 12, detects the data such as the humiture of gas, pressure.Finally, gas, by monitoring the case 13 control through valve 14, is back to air source 15, completes to reclaim the gas after the second hoist cable 10.
From the foregoing, clean dry air or noble gas flow in the space of sling steel wire, it is full of inside anchor head, actively prevents sling steel wire and anchor head corrosion.It is filled with clean dry air or noble gas inside hoist cable, prevents external corrosion material from entering.When hoist cable protective layer goes wrong, air pressure variations, by monitoring case feedback information, provides for maintenance management and instructs.
Claims (9)
1. a sling of suspension bridge anticorrosion structure, comprising:
The anchor head at hoist cable two ends wherein one end is air intlet, and the other end is air outlet slit, in hoist cable
It is connected into an air duct；
Air intlet and air outlet slit respectively connect one for monitoring the monitoring case of the humiture of gas, pressure,
Two monitoring casees are all connected with air source by valve；
The gas that air source provides is clean dry air or noble gas.
Sling of suspension bridge anticorrosion structure the most according to claim 1, wherein, hoist cable hangs for double
Suo Shi, the air outlet slit of the first hoist cable and the second hoist cable is connected, the first hoist cable and the sky of the second hoist cable
Gas import respectively connects a monitoring case.
Sling of suspension bridge anticorrosion structure the most according to claim 1 and 2, wherein, air enters
Mouth and air outlet slit respectively connect monitoring case by pipeline.
Sling of suspension bridge anticorrosion structure the most according to claim 3, wherein, sets in monitoring case
There are Temperature Humidity Sensor and pressure transducer, and are provided with data acquisition interface.
Sling of suspension bridge anticorrosion structure the most according to claim 3, wherein, valve is machinery
Formula valve.
Sling of suspension bridge anticorrosion structure the most according to claim 3, wherein, air source is for removing
Wet machine or nitrogen making machine.
7. a sling of suspension bridge preserving method, comprises the following steps:
1) open air intlet and the valve of air outlet slit monitoring case, open air source entrance air and enter
The monitoring case of mouth；
2) air source is full of anchor head in the air intlet of hoist cable enters hoist cable, discharges from air outlet slit
Hoist cable, and by the monitoring case at hoist cable two ends, humiture, the pressure of gas are detected；
3) air humidity recorded until air outlet slit monitoring case closes sky after being reduced to the numerical value required
The valve of gas outlet monitoring case；
4) air mass flow and the guarantor of hoist cable is entered according to the Data Control of hoist cable two ends monitoring case detection
Hold the air pressure in hoist cable.
Method the most according to claim 7, wherein, when hoist cable is double hoist cable, air source warp
The air intlet of the first hoist cable enters in hoist cable, enters the second hoist cable from the air outlet slit of the first hoist cable
Air outlet slit, and entered monitoring case recovery gas after hoist cable by the air intlet of the second hoist cable；
The monitoring case that the air intlet of the first hoist cable and the second hoist cable connects is to the humiture of gas, pressure
Detect, enter hoist cable according to the Data Control of the monitoring case detection of the first hoist cable and the second hoist cable
Air pressure in air mass flow and holding hoist cable.
9. according to the method described in claim 7 or 8, wherein, enter hoist cable by Valve controlling
Air mass flow and keep the air pressure in hoist cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510111437.7A CN104695325B (en) | 2015-03-13 | 2015-03-13 | A kind of sling of suspension bridge preserving method and structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510111437.7A CN104695325B (en) | 2015-03-13 | 2015-03-13 | A kind of sling of suspension bridge preserving method and structure |
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| CN104695325A CN104695325A (en) | 2015-06-10 |
| CN104695325B true CN104695325B (en) | 2016-08-17 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316145B (en) * | 2018-03-06 | 2024-08-06 | 江苏法尔胜缆索有限公司 | Intelligent sling capable of sensing and reducing humidity in sling rope body |
| CN110552291A (en) * | 2018-05-31 | 2019-12-10 | 上海浦江缆索股份有限公司 | Bridge inhaul cable filled with protective gas and manufacturing method thereof |
| CN108797392A (en) * | 2018-05-31 | 2018-11-13 | 中交公路规划设计院有限公司 | A kind of novel bridge Active Anticorrosion method |
| CN109371816B (en) * | 2018-12-05 | 2021-01-12 | 江苏中矿大正表面工程技术有限公司 | Dehumidification corrosion prevention device for suspension bridge sling |
| CN109653091B (en) * | 2018-12-05 | 2021-01-12 | 江苏中矿大正表面工程技术有限公司 | Sling protection structure convenient to dehumidification |
| CN114075808A (en) * | 2020-08-17 | 2022-02-22 | 比亚迪股份有限公司 | Cable-stayed bridge structure |
| CN114570630A (en) * | 2020-11-29 | 2022-06-03 | 太原中能合泰电气工程有限公司 | Corrosion prevention method |
| CN114395982A (en) * | 2022-01-24 | 2022-04-26 | 中国矿业大学 | Liquid nitrogen supply system with corrosion inhibition and fire extinguishing functions for bridge steel cable |
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| KR20030037799A (en) * | 2001-11-05 | 2003-05-16 | 주식회사 만영엔지니어링 | Dehumidifier for bridge |
| CN102134835A (en) * | 2011-02-28 | 2011-07-27 | 招商局重庆交通科研设计院有限公司 | Method for prolonging service life of bridge cables |
| CN201933409U (en) * | 2010-12-17 | 2011-08-17 | 江苏法尔胜新日制铁缆索有限公司 | Plastic cable sheath for preventing corrosion of main cable of suspension bridge |
| CN103590334A (en) * | 2012-08-15 | 2014-02-19 | 深圳市市政设计研究院有限公司 | Stay rope structure having corrosion preventing function and corrosion preventing protection method of stay rope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0768685B2 (en) * | 1990-06-04 | 1995-07-26 | 鹿島建設株式会社 | Anticorrosion coating device for diagonal cables supporting suspended structures |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030037799A (en) * | 2001-11-05 | 2003-05-16 | 주식회사 만영엔지니어링 | Dehumidifier for bridge |
| CN201933409U (en) * | 2010-12-17 | 2011-08-17 | 江苏法尔胜新日制铁缆索有限公司 | Plastic cable sheath for preventing corrosion of main cable of suspension bridge |
| CN102134835A (en) * | 2011-02-28 | 2011-07-27 | 招商局重庆交通科研设计院有限公司 | Method for prolonging service life of bridge cables |
| CN103590334A (en) * | 2012-08-15 | 2014-02-19 | 深圳市市政设计研究院有限公司 | Stay rope structure having corrosion preventing function and corrosion preventing protection method of stay rope |
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| CN104695325A (en) | 2015-06-10 |
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Effective date of registration: 20210915 Address after: 100088 CCCC building, 85 Deshengmenwai street, Xicheng District, Beijing Patentee after: CCCC Highway Consultants Co.,Ltd. Patentee after: CCCC HIGHWAY BRIDGES NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Address before: Room 407, block B, No. 83, Deshengmenwai street, Xicheng District, Beijing 100088 Patentee before: CCCC Highway Consultants Co.,Ltd. |
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