KR101961099B1 - Water pipe apparatus for preventing fire of bridge cable and fire preventing method thereof - Google Patents

Water pipe apparatus for preventing fire of bridge cable and fire preventing method thereof Download PDF

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Publication number
KR101961099B1
KR101961099B1 KR1020160165361A KR20160165361A KR101961099B1 KR 101961099 B1 KR101961099 B1 KR 101961099B1 KR 1020160165361 A KR1020160165361 A KR 1020160165361A KR 20160165361 A KR20160165361 A KR 20160165361A KR 101961099 B1 KR101961099 B1 KR 101961099B1
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KR
South Korea
Prior art keywords
cable
water pipe
fire
pipe member
water
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Application number
KR1020160165361A
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Korean (ko)
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KR20180064914A (en
Inventor
김상구
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경기도
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Publication date
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Priority to KR1020160165361A priority Critical patent/KR101961099B1/en
Priority to PCT/KR2017/002813 priority patent/WO2018105821A1/en
Publication of KR20180064914A publication Critical patent/KR20180064914A/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C33/00—Hose accessories
    • 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

Abstract

A water pipe apparatus and a fire prevention method for preventing a fire of a cable supporting a bridge are disclosed. A water pipe system for preventing fire of a cable of a bridge according to one side includes a water pipe member installed along an outer surface of a cable and accommodating a fire extinguishing liquid therein and preventing the fire extinguished when the fire extinguished when a cable fire occurs, And a fixing member for fixing the installed tube to the cable at regular intervals.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a water pipe apparatus for preventing fire of a cable in a bridge,

FIELD OF THE INVENTION The present invention relates to a fire prevention technology, and more particularly, to a water pipe system and a fire prevention method for preventing fire of cable by fire extinguishing water discharged before a cable is broken due to fire in order to suppress fire of a bridge cable prematurely will be.

The bridge is equipped with a cable. For example, cables are installed as bridges in bridges such as cable-stayed bridges and suspension bridges. Here, in order to protect the life of the cable, the cable is embedded in the protective pipe.

Here, the protective pipe of the cable is a combustible material such as HDPE (High Density Polyethylene) and is vulnerable to fire. In case of a fire accident on the west coast highway that occurred on December 3, 2015, a fire occurred at the top of the main tower of the bridge (height of about 100m), and the cable connected to the pylon was broken due to the fire. Four firefighting officers in fire fighting have been killed.

If you analyze the case of a fire on a cable in a bridge, there is a risk of spreading into a large-scale disaster. Cable fire can occur, fire breaks causing cable disconnection, cut cables can reduce the bearing capacity of the bridge, and collapse of the bridge due to reduced bearing capacity. When two or more cables supporting the bridge top plate are cut, the load distribution is unbalanced and the entire top plate may collapse. Already, when you look at the example of Seongsu Bridge, you know that the collapse of a bridge will cause huge loss of life and property.

Cable fire in bridges can be caused by various causes such as lightning, tanker rollover, etc. It is almost impossible to prevent fire from occurring. Therefore, it is most important that the cable fire be suppressed early before the cable is broken.

Korean Patent No. 10-1306973 (2013.09.03)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described prior art, and it is an object of the present invention to provide a water pipe apparatus which is installed along a cable to evolve a fire of a cable of a bridge early and bursts before the cable is cut by fire, And to provide a fire prevention method.

A water pipe apparatus for preventing fire of a cable of a bridge according to one aspect, comprising: a water pipe member installed along an outer surface of the cable to receive a fire extinguishing liquid therein, ; And a fixing member for fixing the installed tube to the cable at regular intervals.

The water pipe member has a funnel-shaped inlet port through which the digestive liquid flows from the ground to the upper end, and the lower end is closed so that the digestive juice is received inside.

When the water pipe member is initially installed, water is injected as a digestive juice through the inlet and the injected digestive juice is received therein.

The water pipe member is replenished as a digestive juice by flowing in rainwater through the inlet port during rain.

The water pipe member is injected with antifreeze solution during the winter season through the inlet port to prevent freezing.

The water pipe member is installed while being spirally wound along the outer surface of the protective pipe protecting the cable.

The protective pipe is a flammable high-density polyethylene material, which houses a cable iron core therein, is filled with wax therein, and is prevented from being flared by the discharged digestive fluid.

Since the flash point of the water pipe member is lower than the flash point of the protective pipe, the water pipe member rises before the protective pipe when a fire occurs.

The water pipe member has a flash point of 300 ° C or higher and a flash point of 85 ° C or higher in the protective pipe.

According to another aspect, a fire prevention method in which a water pipe apparatus prevents fire of a cable of a bridge includes the steps of installing a water pipe member inside the cable to accommodate the fire extinguisher therein; Fixing the installed water pipe to the water pipe by fixing the water pipe with the fixing member at intervals of a predetermined interval; And a step in which when the fire of the cable occurs, the water pipe is blown and the contained digestive liquid is discharged to prevent fire.

According to one aspect of the present invention, when the temperature rises due to the fire generated on the cable of the bridge, the water pipe lower than the flash point of the cable protection pipe is blown first, and the fire extinguisher of the water pipe is discharged, can do.

According to another aspect of the present invention, fire prevention is prevented by a water pipe device, thereby ensuring a golden time, an increase in stability of a cable structure, prevention of vibration and vibration, an increase in job creation, and an installation cost of only 2.21% The effect is expected.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention below, And should not be construed as interpretation.
1 is a schematic block diagram of a water pipe apparatus according to an embodiment of the present invention.
Fig. 2 is an exemplary view of a cable of a bridge in which the water pipe device of Fig. 1 is installed. Fig.
3 is a cross-sectional view of the cable of the bridge of Fig.
Fig. 4 is an illustration of a water pipe device installed in a cable of the bridge of Fig. 2; Fig.
Fig. 5 is an illustration of an inlet formed at the uppermost end of the enlarged water tube in Fig. 4A. Fig.
6 is a schematic flow chart of a fire prevention method of a water pipe device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a schematic block diagram of a water pipe apparatus 100 according to an embodiment of the present invention.

The water pipe apparatus 100 according to an embodiment of the present invention includes a water pipe 110 installed in a cable and a band 123 fixing the water pipe 110 to a cable. The water pipe apparatus 100 can be installed in an existing bridge.

The water pipe 110 is a water pipe member of the present invention, installed along the outer surface of the cable, and houses the digestive liquid therein. If a cable fire occurs after the water pipe 110 is installed, the water pipe 110 blows as the temperature of the fire rises, and the fire extinguishing liquid contained therein is released to prevent fire.

The band 123 is a fixing member of the present invention, and fixes the water pipe 110 installed on the outer surface of the cable by tightly attaching it to the cable. The resilient band 123 is located at regular intervals of the cable, and the fixing force can be maintained by tightening the inner water pipe 110 and the cable with elastic force.

In the above, when the water pipe 100 is installed in the cable, since the initial fire suppression against the fire of the cable is possible, golden time is secured. Since the water pipe 100 is spirally installed on the cable, the supporting force of the rain and the wind is increased, thereby preventing the vibration of the cable due to the stability of the cable structure. Job creation by water pipe installation work and management is expected. In addition, the water installation cost is about 2.2%, which is economical and efficient fire prevention cost compared to the social loss cost due to fire.

2 is an exemplary view of a cable 220 of a bridge 200 on which the water pipe apparatus 100 of FIG. 1 is installed.

The bridge 200 corresponds to a cable-stayed bridge, a suspension bridge, etc. supported by the tension of the cable 220. For reference, there are 45 cable-stayed bridges and suspension bridges nationwide, and the total length of bridges reaches 53 km. The bridge 200 has a main tower 210 installed at regular intervals. A cable 220 is installed on the basis of each pillar 210 and serves to lift up the top plate 230 corresponding to the bottom surface by the tension of the cable 220 installed. That is, the upper plate 230 can be supported upward while the load of the upper plate 230 is uniformly dispersed through the cable 220 connected to the main tower 210.

3 is a cross-sectional view of the cable 220 of the bridge 200 of FIG.

The cable 220 is formed by accommodating a cable iron core 323 inside a pipe-type protective pipe 321. The protective pipe 321 serves to protect the iron core 323 and prolong its service life. The inner surface of the protective pipe 321 is filled with wax 325 (petroleum wax) to reduce the frictional force with the iron core 323.

The occurrence of a fire in the cable 220 is attributable to HDPE, which is a flammable high-density polyethylene material of the protective pipe 321. That is, the protective pipe 321 made of a flammable material spreads fire, and the cable 220 is broken due to the fire. Furthermore, the wax 325 filled in the interior also makes it difficult for the fire to evolve and the fire to be sustained.

4 is an exemplary view of a water pipe apparatus 100 installed on a cable 220 of the bridge 200 of FIG.

The upper end of the cable 220 is fixed to the main shaft 210 and the other end is fixed to the cable fixing portion 210 of the ground. The water pipe 110 of the water pipe 100 is installed so as to be spirally wrapped around the outer surface of the protective pipe 321 of the cable 220. The bands 120 are installed at predetermined intervals in the extension lines of the installed water pipes 110 and the protection pipes 321 and each band 120 tightens and fixes the water pipes 110 and the protection pipe 321.

Here, the upper end 401 of the water pipe 110 is formed with an inlet for a funnel-shaped digestive liquid. The digestive juices that are filled through the inlet can be water and other extinguishing agents. Further, the bottommost end 402 of the water tube 11 is closed so that the extinguishing liquid is received therein. That is, the water tube 11 is supplied with water through the inlet port and functions as a water bag.

In addition, since the flash point of the protective pipe 321 is 300 degrees or more, the flash point of the water pipe 110 is 85 degrees or more, so that the water pipe 110 having a relatively low flash point is firstly affected . As the water pipe 110 ruptures, the water contained therein flows along the outer surface of the protection pipe 321 to prevent fire. If a fire has already occurred, water is used to extinguish the fire. In addition, the protective pipe 321 wetted with water has a low temperature and turns into a non-combustible material, thereby preventing fire.

FIG. 5 is an exemplary view of an inlet 500 formed at the uppermost end 401 of the water tube 110 enlarged in FIG.

The inlet 500 formed in the funnel shape at the top end 401 serves to inflow water and at the same time collects stormwater in a rainfall and flows into the water pipe 110. That is, the rainwater replenishes the digestive juice inside the water pipe 110 through the inlet 500 at each rainy hour. As the water is economical as the digestive juice, the externally introduced water into the water tube 110 naturally replenishes the digestive juice so that the management cost can be economized.

6 is a schematic flow diagram of a fire prevention method of the water pipe apparatus 100 according to an embodiment of the present invention.

A water pipe apparatus 100 is installed on the cable 220 of the bridge 200. When the installation is started, a water pipe 110 is installed to spirally surround the outer surface of the protective pipe 321 of the cable 220 (S611).

Here, the upper end 401 of the water pipe 110 located at the highest position from the ground has a funnel-shaped inlet 500 for injecting digestive juices. In addition, the water pipe 110 is closed at the lowermost end 402 closest to the ground so that the digestive juice is received therein.

When the water pipe 110 is installed, a band 120 of an elastic material is installed (S613) for a fixed force at a certain interval between the water pipes 110 and the cable 220, To fix the water pipe 110 to the cable 220. [

When the water pipe apparatus 100 is fixed to the cable 220 in the initial installation, water is injected into the water pipe 110 through the inlet 500 as a digestive juice, and the injected digestive juice is received therein (S615).

After the initial installation, the inlet 500 collects stormwater every time it rains, and replenishes the stormwater in the water pipe 110 (S631). The water pipe 110 is required to be filled with constantly extinguishing liquid.

In the winter season, the antifreeze solution is injected into the water pipe 110 through the inlet 500 to prevent the water pipe 110 from being frozen (S633).

Then, when a fire occurs, when the flash point of the water pipe 110 reaches 85 degrees due to a rise in temperature, the water pipe 110 is blown to discharge the internal fire extinguishing liquid, and the discharged fire extinguishing liquid soaks the cable 220 to prevent fire (S651). For reference, the flash point of the protective pipe 321 of the cable 220 is 300 degrees, and the water pipe 110 having a low flash point first fires.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It goes without saying that various modifications and variations are possible within the scope of equivalence of the scope.

100: water pipe device 110: water pipe
120: Band

Claims (20)

1. A water pipe system for preventing fire of a cable of a bridge,
In order to ensure the stability of the cable structure in which the upper end is formed with a funnel-shaped inlet through which the digestive liquid is introduced, the lower end is closed to receive the digestive liquid therein, and the supporting force of the shaking of the cable is increased by rain or wind, The cable is wound while being spirally wound around the outer surface of the protection pipe for protecting the cable so as to prevent overvoltage of the cable, water is injected as an extinguishing liquid through the inlet during initial installation and is housed therein, For the economical efficiency, the rainwater is prevented from being frozen by injecting antifreeze into the river during the winter season through the inlet, and when the fire occurs in the cable fire, A water pipe member; And
A fixing member which is a band of an elastic material which is received in the water pipe member spirally wound on the cable at regular intervals and tightly clamped by an elastic force,
. delete delete delete delete delete The method according to claim 1,
The protective pipe
A flame-retardant high-density polyethylene material characterized by containing a cable iron core therein, filled with wax therein, and protected against fire by the extinguishing liquid. The method according to claim 1,
The water pipe member
Characterized in that the flashing point is lower than the flash point of the protective pipe so that the water pipe member pops before the protective pipe in the event of a fire. 9. The method of claim 8,
The water pipe member
Characterized in that the flash point of the protective pipe is at least 300 degrees and the flash point of the water pipe member is at least 85 degrees. delete A fire prevention method in which a water pipe device prevents fire of a cable of a bridge,
In order to accommodate the extinguishing liquid inside, the water pipe member in which the funnel-shaped inlet is formed at the upper end from the ground and the upper end is closed and the lower end is closed has the stability of the cable structure in which the supporting force of the cable swing due to rain or wind is increased. Wherein the cable is wound while being spirally wound around an outer surface of a protective pipe for protecting the cable to prevent overvoltage of the cable, water is injected as an extinguishing liquid through the inlet during the initial installation of the water pipe member, Installing the water pipe member through which an antifreeze solution is injected through the inlet of the water pipe member to prevent freezing of the frozen water during the winter season;
Forming a water pipe device by receiving and fixing the water pipe member, which is a band of an elastic material, spirally wound on the cable at regular intervals;
In order to economize the cost of managing the extinguishing liquid to be excellent, replenishing the externally introduced rainwater through the inlet of the water pipe member during rainy season and replenishing it as a digestive juice; And
When the fire of the cable occurs, the water pipe member is blown out, and the fire extinguishing liquid is released to prevent fire
/ RTI > delete delete delete delete delete 12. The method of claim 11,
The protective pipe
A flame-retardant high-density polyethylene material, comprising a cable iron core housed therein, filled with wax therein, and protected against fire by the extinguishing liquid. 12. The method of claim 11,
The method of claim 1,
Wherein the flashing point of the water pipe member is lower than the flash point of the protective pipe so that the water pipe member blows before the protective pipe when a fire occurs. 19. The method of claim 18,
The water pipe member
Wherein the flash point of the protective pipe is at least 300 degrees and the flash point of the water pipe member is at least 85 degrees. delete
KR1020160165361A 2016-12-06 2016-12-06 Water pipe apparatus for preventing fire of bridge cable and fire preventing method thereof KR101961099B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020160165361A KR101961099B1 (en) 2016-12-06 2016-12-06 Water pipe apparatus for preventing fire of bridge cable and fire preventing method thereof
PCT/KR2017/002813 WO2018105821A1 (en) 2016-12-06 2017-03-15 Water pipe installation for preventing fire in cables of bridge, and fire prevention method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160165361A KR101961099B1 (en) 2016-12-06 2016-12-06 Water pipe apparatus for preventing fire of bridge cable and fire preventing method thereof

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KR20180064914A KR20180064914A (en) 2018-06-15
KR101961099B1 true KR101961099B1 (en) 2019-03-22

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WO (1) WO2018105821A1 (en)

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KR102483375B1 (en) 2022-07-01 2022-12-30 사태형 Grenade for fire extinguishing

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US8474219B2 (en) * 2011-07-13 2013-07-02 Ultimate Strength Cable, LLC Stay cable for structures
CN111905299B (en) * 2020-07-28 2021-07-16 安徽鹰龙工业设计有限公司 Cable-stayed bridge fire-fighting device
CN112431133B (en) * 2020-11-11 2022-08-26 中国建筑第八工程局有限公司 Be applied to bridge and spatial structure's fire-resistant carbon fiber cable
CN112900245A (en) * 2021-03-31 2021-06-04 长安大学 Fireproof device for cable-stayed bridge inhaul cable and installation method thereof
CN114277661B (en) * 2022-01-25 2023-12-29 中国矿业大学 Fireproof device of suspension bridge main cable clamp

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KR101610297B1 (en) * 2016-02-15 2016-04-07 (주)월호정보기술 Fire extinguishing device of high voltage power line

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Publication number Priority date Publication date Assignee Title
JP2011064010A (en) * 2009-09-17 2011-03-31 Giken Kanri:Kk Fire resistive covering structure of prestressing steel, and method for constructing the same
KR101610297B1 (en) * 2016-02-15 2016-04-07 (주)월호정보기술 Fire extinguishing device of high voltage power line

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102483375B1 (en) 2022-07-01 2022-12-30 사태형 Grenade for fire extinguishing

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KR20180064914A (en) 2018-06-15
WO2018105821A1 (en) 2018-06-14

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