CN114908667A - Dehumidification system and dehumidification method for main cable of suspension bridge - Google Patents
Dehumidification system and dehumidification method for main cable of suspension bridge Download PDFInfo
- Publication number
- CN114908667A CN114908667A CN202210528572.1A CN202210528572A CN114908667A CN 114908667 A CN114908667 A CN 114908667A CN 202210528572 A CN202210528572 A CN 202210528572A CN 114908667 A CN114908667 A CN 114908667A
- Authority
- CN
- China
- Prior art keywords
- dehumidification
- air
- main cable
- suspension bridge
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
Abstract
The invention discloses a dehumidification system and a dehumidification method for main cables of a suspension bridge. Compared with the traditional method, the invention omits the moisture-removing auxiliary structures such as an external air pipe, an air inlet and outlet cable clamp and the like, only needs to arrange a few slotted steel wires in the original main cable structure, and can be installed in place along with the cable strand in one step, thereby saving a large amount of manpower and material cost.
Description
Technical Field
The invention relates to the technical field of suspension bridges. More particularly, the invention relates to a suspension bridge main cable dehumidification system and a dehumidification method.
Background
The main cable is an important stressed component on the suspension bridge, is exposed in the atmospheric environment for a long time and is easily corroded by moisture to influence the mechanical property of the suspension bridge, and the internal humidity data of the main cable is an important index for accurately evaluating the service life of the suspension bridge. Meanwhile, once the main cable of the suspension bridge is built, the suspension bridge cannot be replaced, and protection and dehumidification of the main cable of the suspension bridge are important work for ensuring the service life of the suspension bridge.
The existing main cable dehumidification mode mostly adopts a mode of additionally arranging an external pipeline, and dry gas is delivered to a gap between steel wires inside a main cable at a certain interval by using pressure to clamp the compressed gas from air inlet through an external air pipe. This dehumidification method has the following disadvantages: firstly, when the span of the suspension bridge is large, a long-distance external air pipe needs to be erected, the longer the air pipe is, the more difficult the tightness is to ensure, and the dehumidification effect can be reduced once leakage occurs; secondly, gaps in the traditional main cable strands are small, air is difficult to enter, dry air is difficult to distribute over the sections of the main cables, the bottom side dehumidification effect is poor, the dehumidification period is long, and the dehumidification work needs 1-2 years to meet design requirements; the system is complex and the installation workload is large; therefore, in order to solve the problem of the existing main cable dehumidification method, a new main cable dehumidification system is needed.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a dehumidification system and a dehumidification method for a main cable of a suspension bridge, and solves the problems of complex arrangement of external pipelines and difficult air intake in the traditional main cable dehumidification method.
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a suspension bridge main push-towing rope dehumidification system, be provided with the hydrofuge air flue along the length direction of strand in the strand of main push-towing rope, the hydrofuge air flue of every strand that is located the anchor head end all is connected with the fan gas-supply pipe.
Preferably, the center of the cable strand is provided with a moisture exhausting air passage.
Preferably, slotted wires are provided in the strands to form the moisture excluding air passages.
Preferably, the steel wire is provided with a plurality of slots parallel to the axial direction of the steel wire at intervals along the circumferential direction of the steel wire.
Preferably, the steel wire is externally wrapped with an open-cell metal foil.
Preferably, the fan gas pipe is connected with the air inlet anchor chamber fan.
Preferably, the other end of the moisture discharging air passage of each cable strand is connected with the air outlet anchor chamber, and a humidity sensor is arranged in the air outlet anchor chamber.
Preferably, the length of the moisture exhaust duct is equal to or longer than the length of the corresponding strand.
The invention also provides a dehumidification method of the main cable of the suspension bridge, before the cable strand is installed, a slotted steel wire is arranged at the center of the cable strand along the length of the cable strand to form a moisture exhaust air passage, the moisture exhaust air passage of each cable strand positioned at the anchor head end is connected with a fan air delivery pipe, the other end of the moisture exhaust air passage of each cable strand is connected with an air outlet anchor chamber, and a humidity sensor is arranged in the air outlet anchor chamber;
during dehumidification, continuously blowing dry inert gas into the fan gas transmission pipeline through the air inlet anchor chamber fan, enabling the gas to enter the air outlet anchor chamber through the slot and take away moisture in the main cable, and when the humidity of the discharged gas in the air outlet anchor chamber is lower than a set humidity value in a time period t, completing dehumidification.
The invention at least comprises the following beneficial effects:
1) compared with the traditional method, the method saves the humidity-removing auxiliary structures such as an external air pipe, an air inlet and outlet cable clamp and the like, only needs to arrange a few slotted steel wires in the original main cable structure, and is installed in place along with the cable strand, so that a large amount of manpower and material cost is saved.
2) Evenly distributed's fluting steel wire makes gas flow in the main push-towing rope smooth and easy, and the dry gas can be covered with whole main push-towing rope cross-section fast in the hydrofuge process, and the hydrofuge is effectual, and the time is short.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic illustration of a main cable construction according to the present invention;
FIG. 2 is a schematic view of the slotted wire configuration of the present invention;
fig. 3 is a schematic layout of a suspension bridge main cable dehumidification system of the invention.
1 strand, 2 steel wires, 3 metal foils, 4 flutings, 5 main cables, 6 anchor room fans of admitting air, 7 anchor rooms of admitting air.
Detailed Description
The invention will be described more fully hereinafter with reference to the accompanying drawings. Those skilled in the art will be able to practice the invention based on these descriptions. Before describing the present invention in detail with reference to the accompanying drawings, it is to be noted that: the technical solutions and features provided in the present invention in the respective sections including the following description may be combined with each other without conflict.
Furthermore, the embodiments of the present invention described in the following description are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
The invention is further described in detail with reference to the accompanying drawings and implementation, and the specific implementation process is as follows:
as shown in fig. 1, the invention provides a dehumidification system for a main cable 5 of a suspension bridge, wherein a dehumidification air passage is arranged in each strand 1 of the main cable 5 along the length direction of the strand 1 to convey dry air, and the dehumidification air passage of each strand 1 at the anchor end is connected with a fan air pipe to discharge air with moisture.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: and a moisture exhaust air passage is arranged in the center of the cable strand 1.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the strand 1 is provided with a slotted 4 steel wire 2 to form the moisture exhaust air passage.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: steel wire 2 is provided with a plurality of 2 axial fluting 4 that are on a parallel with the steel wire along its circumference interval, steel wire 2 is provided with three group's fluting 4 along its circumference in this embodiment, fluting 4's cross-section is the U-shaped, inert gas circulates in main cable 5 through fluting 4, take away the moisture in main cable 5, fluting 4 evenly distributed, the dry gas can be covered with whole main cable 5 cross-sections fast among the hydrofuge process, the hydrofuge effect is improved, 2 fluting 4 positions of steel wire and quantity can change according to actual need.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: as shown in fig. 2, the steel wire 2 is externally wrapped with an open-pore metal foil 3.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the fan gas pipe is connected with the air inlet anchor chamber fan 6.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the other end of the moisture-discharging air passage of each cable strand 1 is connected with an air outlet anchor chamber 7, and a humidity sensor is arranged in the air outlet anchor chamber 7.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the length of the moisture exhaust air passage is equal to or longer than the length of the corresponding strand 1.
In another embodiment, a dehumidification method for a main cable 5 of a suspension bridge is provided, wherein before installation of a cable strand 1, a groove 4 is formed in the center of the cable strand 1 along the length of the cable strand 1 to form a moisture exhaust air passage, the moisture exhaust air passage of each cable strand 1 at the anchor end is connected with a fan air pipe, the other end of the moisture exhaust air passage of each cable strand 1 is connected with an air outlet anchor chamber 7, and a humidity sensor is arranged in the air outlet anchor chamber 7.
As shown in fig. 3, in the dehumidification method of the main cable 5 of the present invention, it is only necessary to arrange air inlet and outlet devices in the anchor chambers at both ends without adding auxiliary dehumidification devices, and connect the air passage steel wire 2 in the main cable 5 with the air inlet anchor chamber fan 6 from the anchor head. When the system is operated, dry inert gas is filled into the air inlet, moisture is discharged from the air outlet anchor chamber 7, a humidity sensor is arranged in the air outlet anchor chamber 7, and when the discharged gas meets the humidity requirement within a period of time, dehumidification is completed. By adopting the dehumidification system, the relative humidity in the full-length range of the main cable can be reduced from 80-90% to below 40% in 6 months or even shorter time. Compared with the traditional dehumidification method, the time for reaching the same relative humidity needs 1-2 years to be 2-4 times faster, and the corrosion rate of the main cable steel wire at the early stage is slowed by more than 50%.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (9)
1. The dehumidification system for the main cable of the suspension bridge is characterized in that a dehumidification air passage is arranged in the strand of the main cable along the length direction of the strand, and the dehumidification air passages of each strand at the anchor end are connected with a fan air conveying pipe.
2. The suspension bridge main cable dehumidification system of claim 1, wherein a moisture evacuation air passage is provided centrally in the strand.
3. The suspension bridge main cable dehumidification system of claim 1 or claim 2, wherein slotted steel wires are provided in the strands to form the moisture evacuation air duct.
4. The suspension bridge main cable dehumidification system of claim 3, wherein said steel wire is provided with a plurality of slots spaced along a circumferential direction thereof in parallel with an axial direction of the steel wire.
5. The suspension bridge main cable dehumidification system of claim 3, wherein said steel wires are externally wrapped with perforated foil.
6. The suspension bridge main cable dehumidification system of claim 1, wherein the fan air delivery pipe is connected to an air intake anchor chamber fan.
7. The dehumidification system of a main cable of a suspension bridge of claim 6, wherein the other end of the moisture evacuation duct of each strand is connected to an air outlet anchor chamber, and a humidity sensor is disposed in the air outlet anchor chamber.
8. The suspension bridge main cable dehumidification system of claim 1, wherein the length of the moisture evacuation air path is equal to or longer than the length of the corresponding strand.
9. A dehumidification method for a main cable of a suspension bridge is characterized in that before installation of cable strands, slotted steel wires are arranged in the centers of the cable strands along the lengths of the cable strands to form dehumidification air passages, the dehumidification air passages of the cable strands at the anchor ends are connected with a fan air delivery pipe, the other ends of the dehumidification air passages of the cable strands are connected with an air outlet anchor chamber, and a humidity sensor is arranged in the air outlet anchor chamber;
during dehumidification, continuously blowing dry inert gas into the fan gas transmission pipeline through the air inlet anchor chamber fan, enabling the gas to enter the air outlet anchor chamber through the slot and take away moisture in the main cable, and when the humidity of the discharged gas in the air outlet anchor chamber is lower than a set humidity value in a time period t, completing dehumidification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210528572.1A CN114908667B (en) | 2022-05-16 | 2022-05-16 | Main cable dehumidification system and dehumidification method for suspension bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210528572.1A CN114908667B (en) | 2022-05-16 | 2022-05-16 | Main cable dehumidification system and dehumidification method for suspension bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114908667A true CN114908667A (en) | 2022-08-16 |
| CN114908667B CN114908667B (en) | 2023-04-25 |
Family
ID=82767536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210528572.1A Active CN114908667B (en) | 2022-05-16 | 2022-05-16 | Main cable dehumidification system and dehumidification method for suspension bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114908667B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040237222A1 (en) * | 2003-06-02 | 2004-12-02 | Jerome Stubler | Method for anchoring parallel wire cables and suspension system for a construction work |
| WO2015123620A1 (en) * | 2014-02-14 | 2015-08-20 | The Trustees Of Columbia University In The City Of New York | High-strength wires for uniform and hybrid structural cables |
| CN111535180A (en) * | 2020-05-11 | 2020-08-14 | 北京赛亿科技有限公司 | Stay cable bridge stay cable structure for dehumidifying by using ventilating steel pipes |
| CN111535179A (en) * | 2020-05-11 | 2020-08-14 | 北京赛亿科技有限公司 | Suspension bridge main cable structure utilizing ventilating steel pipes to dehumidify |
| CN111945562A (en) * | 2020-08-12 | 2020-11-17 | 郑州大学 | Dehumidification method of main cable of suspension bridge |
| CN114075808A (en) * | 2020-08-17 | 2022-02-22 | 比亚迪股份有限公司 | Cable-stayed bridge structure |
-
2022
- 2022-05-16 CN CN202210528572.1A patent/CN114908667B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040237222A1 (en) * | 2003-06-02 | 2004-12-02 | Jerome Stubler | Method for anchoring parallel wire cables and suspension system for a construction work |
| WO2015123620A1 (en) * | 2014-02-14 | 2015-08-20 | The Trustees Of Columbia University In The City Of New York | High-strength wires for uniform and hybrid structural cables |
| CN111535180A (en) * | 2020-05-11 | 2020-08-14 | 北京赛亿科技有限公司 | Stay cable bridge stay cable structure for dehumidifying by using ventilating steel pipes |
| CN111535179A (en) * | 2020-05-11 | 2020-08-14 | 北京赛亿科技有限公司 | Suspension bridge main cable structure utilizing ventilating steel pipes to dehumidify |
| CN111945562A (en) * | 2020-08-12 | 2020-11-17 | 郑州大学 | Dehumidification method of main cable of suspension bridge |
| CN114075808A (en) * | 2020-08-17 | 2022-02-22 | 比亚迪股份有限公司 | Cable-stayed bridge structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114908667B (en) | 2023-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8042213B2 (en) | Device and method for preventing rusting of cable for supporting bridge | |
| CN100554589C (en) | Fix the method for parallel metal cords | |
| CN203795310U (en) | Suspension bridge main cable dehumidification system for taking in and out air through cable clips | |
| CN111535179A (en) | Suspension bridge main cable structure utilizing ventilating steel pipes to dehumidify | |
| CN111945562B (en) | Dehumidification method of main cable of suspension bridge | |
| CN110565524B (en) | Assessment method for air supply and dehumidification system in main cable of suspension bridge | |
| CN111535180A (en) | Stay cable bridge stay cable structure for dehumidifying by using ventilating steel pipes | |
| CN114908667A (en) | Dehumidification system and dehumidification method for main cable of suspension bridge | |
| CN110080106B (en) | Pipeline method prefabricated parallel steel wire sling | |
| CN108589530A (en) | The air feeder structure and its implementation of dry air dehumidifying | |
| EP1921199A3 (en) | Exhaust structure from dryer in apartment building | |
| CN207314146U (en) | Air dryer systems and air duct for main rope of suspension bridge | |
| JPH10159019A (en) | Corrosionproof method of cable for suspension structure | |
| JP3173956B2 (en) | Rust prevention method and device for cable | |
| CN114075808A (en) | Cable-stayed bridge structure | |
| CN111780542A (en) | Dehumidification structure and dehumidification system of cable-stayed bridge branch silk pipe cable saddle | |
| CN211596836U (en) | Pipe gallery turning structure and comprehensive pipe gallery | |
| US11506323B2 (en) | Ventilation system for insulated pipe | |
| CN209985176U (en) | Denitration reducing agent distribution pipe and industrial furnace convection section denitration reducing agent distribution device | |
| CN116651160A (en) | Main cable dehumidification system of suspension bridge | |
| CN114232478B (en) | Efficient dehumidification method for main cable of suspension bridge | |
| CN215259919U (en) | Smoke and air duct single-plug board isolation door with sealing air | |
| KR20100120214A (en) | Fuel cell plate having multi-directional flow field | |
| CN214573336U (en) | Dehumidification structure and dehumidification system of cable-stayed bridge branch silk pipe cable saddle | |
| CN102561186B (en) | Anticorrosion structure for main cable of suspension bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |