KR20090098763A - Apparatus for preventing water leakage of bridge - Google Patents

Abstract

An interchangeable buried water leakage prevention apparatus of a bridge is provided to prevent rainwater entering the buried frame through an interval between slabs as both upper sides are inserted and supported inside the buried frame. An interchangeable buried water leakage prevention apparatus of a bridge comprises a pair of buried frames(200) and a drain board(300). The buried frame comprises a frame body(210) having a slab contact plate(220) formed on one upper side to contact the side surfaces of an interval between slabs, an inclined plate(230) formed on the lower side, and an insert channel(240) formed between the slab contact plate and the inclined plate. The slab contact plate has a support hook(250) on the lower side. The drain board comprises a drain board body(310) bent in an arc shape. The drain board body has protrusions(320) on both upper sides which are inserted in the frame body and hung on the support hook.

Description

Refillable Leakage Prevention Device for Bridges {APPARATUS FOR PREVENTING WATER LEAKAGE OF BRIDGE}

The present invention relates to a buried type leakage preventing device of a replaceable bridge, and more particularly, to prevent rainwater and earth and sand from leaking into the lower part of the slab between the slab and the slab of the bridge, and to use a semi-permanently drainage slab. Both sides of the drain plate are reliably supported by the landfill frame in the landfill frame installed on both sides of the slab of the bridge by transporting between the slab and the slab, and it is easy to install, and it can reduce the work time and cost according to the work, and the drain plate and the bridge The embedded structure of the buried frame to be embedded in the slab of the slab (slab) to improve the productivity, and relates to a replaceable bridge-type leak-proof device that can be inserted and drawn out only the drain plate in the side and top and bottom of the flow.

In general, a bridge is formed of a steel frame structure on the upper part of the pillar after erecting a plurality of pillars, concrete is poured into the steel frame skeleton to form a bridge deck, and the upper surface of the bridge deck is usually coated with asphalt and normal roads It is formed under the same conditions.

The bridge deck has a length change such as the length of the roof deck increases or decreases due to temperature changes occurring according to seasons. In order to compensate for the expansion and contraction of the bridge deck, the bridge deck has a plurality of units (described below). Bridge slab is used in the terminology), and the slab and the slab are elastically connected. Here, the expansion joint is installed between the slab of the bridge forming the bridge top plate and the slab, the plurality of bridge slabs forming the bridge top plate by this expansion joint is protected from damage due to the expansion phenomenon and at the same time smoothly Driving is guaranteed.

In addition, although expansion joints of various configurations are provided in expansion joints of bridges, conventional expansion joints for bridges are flexibly stretched due to contraction and expansion of the bridge deck, but are structurally weak in preventing water penetration. .

Accordingly, the applicant of the present invention has proposed a leak preventing device ("expansion expansion joint leak prevention device for replacement") bridge expansion joint through the Republic of Korea Patent Publication No. 10-0707484, such "expansion expansion joint leakage prevention device for replacement" ”Ensures that the expansion joints and the water leaking from the periphery can be drained smoothly without entering the bridges or metal beams under the bridge slabs.

The conventional expansion joint leakage preventing device as described above is installed in the space between the bridge slabs forming the bridge top plate (in the following description, the term "gap" is used for the space between the bridge slabs), the fixed base It consists of a fixture and an elastic member.

The fixing pedestal is formed in the form of a fixing groove, and a pair of fixing pedestals are embedded in the opposite sides of the two bridge slabs on the basis of the opposite sides of the two bridge slabs symmetrical with each other. Here, the pair of fixed pedestal is formed in the form of the opening through the fixing groove and the flow path. In addition, a pair of fixing bars are fitted into and fixed to the pair of fixing pedestals, respectively, and the pair of fixing pedestals are exposed to the oil passage through the openings of the fixing pedestals, respectively. Then, both ends of the elastic member is coupled to the pair of fixing rods, the elastic member is installed in the "U" shape in the gap between the bridge slabs to function as a drain.

Here, the expansion expansion joint leakage prevention device devised by the applicant of the present invention is installed in the expansion joint between the bridge slab between the bridge. That is, when the formwork is installed to form the bridge slab, the fixed butt is fixed to the inner side of the formwork, and then the concrete is poured into the formwork to install the fixed butt on the side of the rail side of the bridge slab. Accordingly, the fixed pedestal is buried in a semi-permanent state in the bridge slab, and the expansion member is coupled to the rail-shaped fixed pedestal to drain the leakage from the bridge expansion joint to the outside of the bridge without entering the bridge or beam. You can.

However, the above expansion joint leakage preventing device is installed because the expansion member is fixed to the fixing support via the fixing rod, it requires the operation of coupling a pair of fixing rods respectively at both ends in the width direction of the elastic member. As a result, the preliminary work for supporting and installing the elastic members on the embedded fixed support of the bridge slab becomes relatively cumbersome, and as a result, the time required for installing the expansion joint leak prevention device in the bridge slab is relatively long. do. This is the same phenomenon when replacing the elastic member in the existing expansion joint leak prevention device installed.

In addition, when the elastic member is formed of rubber or other soft materials, it may be aging in a short period of time while being continuously exposed to daylight (daylight), resulting in deterioration of durability.

In addition, since the old and new members must be replaced with new ones to perform their normal functions, the expansion joint leakage preventing device has a relatively fast replacement cycle of the new members. As a result, the manager must pay more attention to the maintenance of the expansion joint leak prevention device, and the frequent replacement of the expansion member causes inconvenience and expense.

In addition, as a means for minimizing the radiant heat of daylight for the expansion and contraction member, a steel plate covering the upper end of the railing is installed in each of the upper end of the bridge slab, which is not only the expansion joint leak prevention device but also the maintenance of the bridge including the same In addition to the increase in the cost of the system, there was a problem of increasing the budget of the institution or organization in charge of the bridge management.

The present invention is to overcome the conventional problems as described above, an object of the present invention is to prevent the rainwater and earth and sand flowing into the lower portion of the slab flowing between the slab and the slab of the bridge, and to use a drain plate that can be used semi-permanently Both sides of the drain board are inserted into the buried frame installed on both sides of the bridge slag between the slab and the slab by transferring it to the gap between the slab and the slab so that it is stably supported by the buried frame, and it is easy to install. In order to provide a replaceable bridge-type leak-proof device that can be replaced.

In addition, the present invention can be separated from the landfill frame only drain plate supported by both sides inserted into the buried frame installed on both sides of the slab of the bridge from the buried frame, easy to install and replace the drain plate, reducing the work time and cost according to the installation and replacement work Another purpose is to provide an embedded leak-proof device for bridges, in which only a drain plate can be replaced if necessary.

In addition, another object of the present invention is to provide a bridge-type leak-proof leak-proof device that can be replaced to improve the productivity by the simple structure of the combination of the buried frame and the drain plate buried on both sides of the slab of the bridge.

And the present invention can be combined by sliding the drainage plate on the side of the slab buried in the buried frame embedded in both sides of the flow between the slab and at the same time transported from the top to the bottom or transferred from the bottom to the top of the drainage to the landfill frame Another object is to provide an embedded leak-tight device that can be easily combined.

Another object of the present invention is to provide a buried type leakage preventing device which can prevent rainwater flowing into the gap between the upper part of the drainage plate and being inserted into the buried frame to be introduced into the buried frame. .

In order to achieve the above object, the present invention provides a leakage preventing device installed in the oil gap 110, which is a space between the slab (slab: 100) and the slab 100 of the bridge,

A slab adhesion plate protruding upward and downward integrally with the frame body 210 based on the frame body 210 at one side upper end of the a-shaped frame body 210 to be in close contact with the side surface of the slab 100 of the slab 100 ( 220 is formed, the lower portion of the frame body 210, the inclined plate 230 is integrally formed with the frame body 210 to be inclined to the lower portion of the slab adhesion plate 220, the slab adhesion plate 220 and the inclined plate ( An insertion passage 240 is formed between the 230, and the support ring 250 is formed at the lower portion of the slab adhesion plate 220 so that the slab adhesion plate 210 is symmetrical with the slab 100 of the clearance 120. A pair of buried frames 200 which are respectively buried in both sides;

 The drainage plate 300 having an engaging protrusion 320 inserted into the frame body 210 of the buried frame 200 and coupled to the support ring 250 at both upper portions of the drainage plate body 310 curved in an arc shape. Characterized in that it comprises a.

The support ring 250 of the buried frame 200 extends from the lower end of the slab contact plate 220 to the inside of the frame body 210 so that an end thereof is bent upward, and the catch ring 320 of the drainage plate 300. ) Is extended inward from both upper ends of the drainage plate body 310, characterized in that the end is bent downward.

In addition, the fixing plate 400 is fixed to both inner surfaces of the upper side of the drain plate body 310 of the drain plate 300 to which the transfer ring is coupled.

On the other hand, the present invention is a leak prevention apparatus installed in the flow path 110 which is a space between the slab (slab: 100) and the slab 100 of the bridge,

A slab adhesion plate 220 is formed at one upper end of the a-shaped frame body 210 to protrude upward and downward integrally with the frame body 210 based on the frame body 210 to be in close contact with the side of the slab 100. And, the lower portion of the frame body 210, the inclined plate 230 is formed so as to be inclined to the lower portion of the slab contact plate 220 integrally with the frame body 210, between the slab contact plate 220 and the inclined plate 230 An insertion passage 240 is formed in the support plate 250 extending from the inner surface of the frame body 210 in the direction of the slab contact plate 220 so that the end is bent upward to form the slab contact plate 2220. A pair of buried frames (200) buried in both sides of the slab (100) of the oil spacing (110) so as to be symmetrical;

 Hanging protrusions extending outwardly from both upper end portions of the drain plate body 310 curved in an arc shape and the end portions are bent downward to be inserted into the frame body 210 of the buried frame 200 and coupled to the support ring 250. A drain plate 300 provided with 320;

It characterized in that it comprises a locking piece 400 is fixed to the inner surface of both sides of the drain plate body 310 of the drain plate 300 is coupled to the transfer ring.

The present invention configured as described above is to prevent the rainwater and earth and sand flowing into the lower portion of the slab flowing between the slab and the slab of the bridge, and transfer the drain plate that can be used semi-permanently between the slab and the slab is embedded on both sides of the slab of the bridge Both sides of the drain plate are inserted into the buried frame to be stably supported by the buried frame, easy to install, there is an effect that can be inserted and withdrawn only the drain plate from the side or top and bottom of the bridge.

And the present invention can transfer the drain plate supported by both sides inserted into the buried frame installed on both sides of the slab of the bridge to the side or top and bottom of the bridge of the bridge to separate the drain plate from the buried frame, it is easy to install and replace the drain plate And it is effective to reduce the work time and cost according to the replacement work.

In addition, another effect of the present invention is a simple coupling structure of the buried frame and the drainage plate installed on the both sides of the slab of the bridge can be replaced to improve the productivity.

In the present invention, the drainage plate is inserted into the buried frame embedded on both sides of the slab of the slab by sliding the drainage plate at the side of the slab, and is simultaneously coupled to the bottom of the rail, or transferred from the lower part of the gap to the upper part of the slab. There is an effect that can be easily combined.

In addition, another effect of the present invention is that both upper portions of the drain plate are inserted into and supported by the inside of the buried frame to prevent rainwater flowing into the gap between the inside of the buried frame.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view showing a leakage preventing device according to the present invention, Figure 2 is an exemplary view showing a state in which the buried frame and the drain plate of the leakage preventing device according to the present invention,

Figure 3 is an exemplary view showing a state in which the leak prevention apparatus according to the present invention is installed in the slab clearance of the bridge, Figure 4 is an exemplary view showing a cross section of the leak prevention apparatus according to the present invention installed in the slab clearance of the bridge, Figure 5 Exemplary diagram showing a state in which the drainage plate of the leak prevention apparatus according to the invention is inserted into the slab clearance of the bridge, Figure 6 is an exemplary view showing a state in which the drainage plate of the leak prevention apparatus according to the invention is inserted into the buried frame, Figure 7 Exemplary diagram showing a state in which the drain plate of the leakage preventing device according to the invention is coupled to the buried frame.

The buried type leakage preventing device of a replaceable bridge according to an embodiment of the present invention is formed including a pair of buried frames 200 and a drain plate 300.

The buried frame 200 is slab (upper and lower) integrally with the frame body 210 based on the frame body 210 on one side upper end of the a-shaped frame body 210 as shown in Figure 1 and 2 Slab contact plate 220 is in close contact with the side surface of the flow path 110 of 100 is formed.

And the lower portion of the frame body 210 of the buried frame 200, the inclined plate 230 is integrally formed with the frame body 210 to be inclined to the lower portion of the slab adhesion plate 220, the slab adhesion plate 220 and Insertion path 240 is formed between the inclined plate 230, the support ring 250 is formed in the lower portion of the slab contact plate 220, the slab contact plate 210 as shown in Figs. A pair is buried in both sides of the slab 100 of the clearance 120 to be symmetrical.

At this time, the buried frame 200, which is embedded in both sides of the flow path 110 of the slab 100 as described above is installed to be embedded when the slab 100 is first cast concrete.

The support ring 250 of the buried frame 200 extends from the lower end of the slab contact plate 220 to the inside of the frame body 210 so that the end is bent upward.

 On the other hand, both sides of the drain plate body 310 of the drain plate 200 curved in an arc shape are provided with a locking projection 320 is inserted into the frame body 210 of the buried frame 200 and coupled to the support ring 250. do.

The hook 320 of the drainage plate 300 extends inwardly from both upper ends of the drainage plate body 310 so that an end portion thereof is bent downward, and a transfer ring is disposed on both inner surfaces of the upper side of the drainage plate body 310 of the drainage plate 300. The engaging piece 400 to which the 500 is coupled is fixed.

At this time, the locking piece 400 is preferably securely fixed by using a method such as welding so as not to be separated from the inner surface of the purchase plate body of the drain plate.

Meanwhile, the drainage plate body 310 of the drainage plate 300 is elastic and semi-permanently used stainless steel plate or copper plate, polyvinyl chloride (PVC) and polyethylene (PE) and engineering plastics or Pressing both sides of the drainage plate body 310 from the outer side to the inner side by using a material of the metal plate to reduce the distance between the engaging ring 320 formed on both upper end portions of the drainage plate body 310 by the elastic force, the pressing force on both sides When released, it is preferable to carry out to return to the distance between the original hooks (313, 320).

On the other hand, the bolt insertion groove 260 is formed in the longitudinal direction along the frame body 210 on the other surface of the frame body 210 opposite to the insertion passage 240 of the buried frame 200.

The head of the plurality of fixing bolts 270 is inserted into the bolt insertion groove 260 in a sliding manner, and the inserted fixing bolts 270 are moved in a sliding manner along the longitudinal direction of the bolt insertion groove 260. The position can be adjusted at appropriate intervals.

And the fixing bolt 270 as described above is intended to be fixed to the slab reinforcement 120 of the bridge. Therefore, the fixing bolt 270 is slidably moved in the longitudinal direction of the bolt insertion groove 260, when welding the slab reinforcing rod 120 and the fixing bolt 270, the fixing bolt (120) to facilitate welding with the fixed bolt ( 270 can be easily adjusted by the position of the welding operation.

As described above, the present invention includes a plurality of fixing bolts inserted into the bolt insertion grooves 260 of the frame body 210 in the slab reinforcement 120 of the bridge as shown in FIGS. 3 and 4. 270 is welded and then fixed to install concrete so that the frame body 210 is embedded on both sides of the flow path 110 of the slab 100.

And the insertion path 240 between the slab contact plate 220 and the inclined plate formed to be inclined downward on the upper one side of the upper portion of the frame body 210 of the buried frame 200 slab 100 slab 100 ) And the slab 100 is preferably installed so as to be symmetrical with each other on both sides.

As described above, the frame body 210 of the buried frame 200 is embedded in both sides of the spacing 110 of the slab 100 and the slab 100 so that the insertion passages 240 are symmetric with each other, and then both sides of the slab 100. Alternatively, the drain plate body 310 of the drain plate 300 is inserted between the upper and lower oil passages 120.

In the present invention will be described with an embodiment that the drainage plate body 310 of the drainage plate 300 is inserted from the top of the oil passage (110).

5 to 7 is coupled to the engaging ring 400 fixed to the upper inner surface of both sides of the drain plate body 301 of the drainage plate 300 is coupled to the transfer ring 500 coupled to the end of the wire in the drawing The drain plate body 310 of the drain plate 300 is transferred to the upper portion of the oil gap 110 by a conveying means (not shown).

At this time, the engaging piece 400 as described above is made in the form of a circular rod in the present invention has been described as an example that is installed on the inner side of the upper side of the drain plate body 310 of the drain plate 300, but the present invention is not limited thereto. If not, the hook piece 400 may be modified in various forms as long as the cross section has a transfer ring 500 installed at the end of the wire such as a square or a polygon.

As described above, after the drain plate body 311 of the drain plate 300 is positioned on the top of the flow path 110 between the slab 100 and the slab 100, the outer surface of the hook ring 320 formed on both sides of the drain plate body 310 is formed. When pushed inward, the catch ring 320 is rotated to the inside of the drain plate body 310 by the elasticity of the drain plate body 310, and the distance between both sides of the catch rings 320 rotated inward as described above is the slab ( Rotate so that it can be inserted into the gap 110 between the 100 and the slab (100).

As described above, in a state in which both side catching rings 320 of the drain plate 310 are rotated inward, the drain plate using the transfer ring 500 coupled to the catching pieces 400 provided on both side inner surfaces of the drain plate body 310. When the body 310 is transported downward so as to be inserted between the oil gaps 110, the end portion of the catching ring 320 of the drainage plate body 310 slides along the wall surfaces of both sides of the oil gap 110 between the slab 100 and the slab 100. And is transferred to the bottom.

And as described above, the drain plate body 310 of the drain plate 300 which is transported between the gaps 110, the frame body 210 of the buried frame 200 installed in each of the side slab 100 of the oil gap 110, respectively. Both sides of the drain plate 300 is passed to the insertion passage 240 formed in the lower portion of the slab contact plate 220 passing through the slab contact plate 220 protruding to the top and bottom on one side, and downwardly transferred to the insertion path 250. Hanging ring 313 is extended inward to the end is bent to the bottom by the elastic force of the drainage plate body 310 is opened to the outside and is inserted into the insertion passage 240.

At this time, the inclined plate 230 formed below the frame body 210 of the buried frame 200 is formed to be inclined under the slab contact plate 220, so that the drain plate body 310 of the drain plate 300 is easily outward, that is, It can be spread to both sides of the slab (100).

As described above, when the catch ring 320 is inserted into the frame body 210 of the buried frame 200, the drain plate body 310 of the drain plate 300 is opened to both sides by elastic force, and the catch piece 400 is inserted. By using the transfer ring 500 coupled to the drain plate body 310 is transferred back to the top.

Then, when the drain plate body 310 of the drain plate 300 is transferred to the upper portion using the transfer ring 500 as described above, the upper end portions of both hooks 320 of the drain plate body 310 are embedded in the frame body of the buried frame 200. (210) If the close contact with the inner upper surface, and pull the transfer ring 500 coupled to the locking piece 400 in the above state to the center of the drain plate body 310, the catch ring 320 of both sides is the drain plate body 310 Is rotated to the inner side.

As described above, when the catching ring 320 of the drainage plate 300 is rotated to the inside of the drainage plate body 310, when the transfer plate 500 transfers the drainage plate body 310 of the drainage plate 300 back to the bottom, it extends inwardly. The hook ring 320 bent downward extends from the lower end of the slab adhesion plate 220 of the buried frame 200 to the inside of the frame body 210 so that the end portion is coupled to the support ring 250 bent upward. Both sides of the drain plate body 310 of 300 are supported and fixed.

And as described above, the engaging ring 320 on both sides of the drainage plate body 310 of the drainage plate 300 is coupled to the inner support ring 250 of the buried frame 200, so that the clearance gap 110 between the slab 100 and the slab 100. Sewage or soil flowing from the to prevent the flow into the frame body 210 through the insertion path 240 of the buried frame 200.

Some of the sewage or earth and sand flowing into the flow path 110 as described above flows directly into the drainage plate body 310 of the drainage plate 300, along the sides of the flow path 110 between the slab 100 and the slab 100. Sewage or soil that is introduced is transferred downward along the slab adhesion plate 220 of the buried frame 200 is introduced into the drainage plate body 310 of the drainage plate 300.

And sewage or earth and sand is introduced into the drainage plate body 310 of the drainage plate 300 as described above is discharged to both sides of the slab 100 along the inside of the drainage plate body (310).

On the other hand, the catch ring 320 of the drainage plate 300 as described above can be inserted in the lower portion of the oil gap 110, and is inserted into the support ring 250 of the buried frame 200 on both sides of the oil gap 110 in a sliding manner. can do.

On the other hand Figure 8 is an exemplary view showing another embodiment of the leak prevention apparatus according to the present invention, the buried frame 200 is a frame body 210 on the upper side of the a-shaped frame body 210, the frame body 210 ) And a slab contact plate 220 which protrudes to the top and bottom integrally with the side of the slab 100 is formed, and the slab contact plate 220 integrally with the frame body 210 in the lower portion of the frame body 210 The inclined plate 230 is formed to be inclined to the lower portion of the), an insertion passage 240 is formed between the slab contact plate 220 and the inclined plate 230, the slab contact plate on the inner surface of the frame body 210 Extending in the direction (220) can be carried out so that the support ring 250 is bent to the top end is formed.

 In addition, the drainage plate 300 extends outward from both upper ends of the drainage plate body 310 curved in an arc shape, and an end portion thereof is bent downward, and inserted into the frame body 210 of the buried frame 200 to support the ring 250. It may be implemented so that the engaging projection 320 is coupled to.

At this time, the engaging piece 400 to which the transfer ring 500 is coupled is fixed to both inner surfaces of the upper side of the drainage plate body 310 of the drainage plate 300.

The drainage plate 300 as described above is coupled to the support ring 250 of the buried frame 200 by the engaging ring 320 formed on both sides of the drainage plate body 310 by the method as described above and flows into the oil gap 110. A part of sewage or soil is introduced directly into the drainage plate body 310 of the drainage plate 300, and the sewage or soil is introduced along the sides of the oil gap 110 between the slab 100 and the slab 100, the landfill frame 200 It is transported to the lower side along the slab contact plate 220 of) to be introduced into the drain plate body 310 of the drain plate 300 to be discharged to the outside of the slab.

Meanwhile, as described above, the drainage plate 300 made of a metal material such as an elastic stainless plate or a copper plate may prevent deformation and deterioration due to sunlight in a state where it is installed in a bridge. This does not require frequent replacement or maintenance work after the drain plate 300 is installed on the bridge relatively easy to maintain the entire leak prevention device, while reducing the cost of maintenance.

What has been described above is just one embodiment for implementing a replaceable bridge-type leak prevention device according to the present invention, the present invention is not limited to the above embodiment, as claimed in the claims below Various modifications can be made by those skilled in the art to which the present invention pertains without departing from the gist of the present invention.

1 is an exemplary view showing a leak prevention apparatus according to the present invention.

Figure 2 is an exemplary view showing a state in which the landfill frame and the drain plate of the leakage preventing device according to the invention separated.

Figure 3 is an exemplary view showing a state in which the leakage preventing device according to the present invention is installed in the slab clearance of the bridge.

Figure 4 is an exemplary view showing a cross-section of the leakage preventing device according to the invention installed on the slab clearance of the bridge.

5 is an exemplary view showing a state in which the drain plate of the leakage preventing device according to the present invention is inserted into the slab clearance of the bridge.

Figure 6 is an exemplary view showing a state in which the drain plate of the leakage preventing device according to the invention is inserted into the buried frame.

Figure 7 is an exemplary view showing a state in which the drain plate of the leakage preventing device according to the present invention is coupled to the buried frame.

8 is an exemplary view showing another embodiment of a leak prevention apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

200: buried frame

210: frame body 220: slab adhesion plate

230: inclined plate 240: insertion path

250: support ring 260: bolt insertion groove

270 fixing bolt

300: drain plate

310: drain plate body 320: hook

400: hanging piece

Claims (5)

In the leak prevention device installed in the flow path 110, which is a space between the slab (100) of the bridge and the slab 100, A slab adhesion plate protruding upward and downward integrally with the frame body 210 based on the frame body 210 at one side upper end of the a-shaped frame body 210 to be in close contact with the side surface of the slab 100 of the slab 100 ( 220 is formed, the lower portion of the frame body 210, the inclined plate 230 is integrally formed with the frame body 210 to be inclined to the lower portion of the slab adhesion plate 220, the slab adhesion plate 220 and the inclined plate ( An insertion passage 240 is formed between the 230, and the support ring 250 is formed at the lower portion of the slab adhesion plate 220 so that the slab adhesion plate 210 is symmetrical with the slab 100 of the clearance 120. A pair of buried frames 200 which are respectively buried in both sides;  The drainage plate 300 having an engaging protrusion 320 inserted into the frame body 210 of the buried frame 200 and coupled to the support ring 250 at both upper portions of the drainage plate body 310 curved in an arc shape. Refillable bridge of the replaceable bridge, characterized in that it comprises a. The method of claim 1, wherein the support ring 250 of the buried frame 200 is replaceable, characterized in that the end is bent upwards extending from the lower end of the slab contact plate 220 into the frame body 210 Built-in leak prevention device of bridge. The method of claim 1, wherein the catch ring 320 of the drainage plate 300 extends inwardly from the upper end of both sides of the drainage plate body 310, the end of the replaceable bridge buried type leakage preventing device, characterized in that bent downward. . The method of claim 1, wherein the landfill-type leak-proof device of the replaceable bridge, characterized in that it comprises a locking piece 400 is fixed to the inner surface of both sides of the drain plate body 310 of the drain plate 300 is coupled to the transfer ring. In the leak prevention device installed in the flow path 110, which is a space between the slab (100) of the bridge and the slab 100, A slab adhesion plate 220 is formed at one upper end of the a-shaped frame body 210 to protrude upward and downward integrally with the frame body 210 based on the frame body 210 to be in close contact with the side of the slab 100. And, the lower portion of the frame body 210, the inclined plate 230 is formed so as to be inclined to the lower portion of the slab contact plate 220 integrally with the frame body 210, between the slab contact plate 220 and the inclined plate 230 An insertion passage 240 is formed in the support plate 250 extending from the inner surface of the frame body 210 in the direction of the slab contact plate 220 so that the end is bent upward to form the slab contact plate 2220. A pair of buried frames (200) buried in both sides of the slab (100) of the oil spacing (110) so as to be symmetrical;  Hanging protrusions extending outwardly from both upper end portions of the drain plate body 310 curved in an arc shape and the end portions are bent downward and inserted into the frame body 210 of the buried frame 200 to be coupled to the support ring 250. A drain plate 300 provided with 320; The replaceable bridge-type leak-proof device of the bridge characterized in that it comprises a locking piece 400 is fixed to the inner surface of both sides of the drain plate body 310 of the drain plate 300 is coupled to the transfer ring.

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