KR101326291B1 - Expansion connector for connection storage bridge - Google Patents

Abstract

The present invention comprises: multiple T-shaped steel members which are installed on the ends of slabs for forming the joints of a bridge; waterproof rubber members which are installed between the T-shaped steel members and prevent water flowing into the joints from flowing into the inner side of the slabs; fixing units which fit and couple the waterproof rubber members to the T-shaped steel members; and coupling members which prevent the waterproof rubber members from being separated from the fixing units.

Description

Expansion joints for bridges {EXPANSION CONNECTOR FOR CONNECTION STORAGE BRIDGE}

The present invention relates to an expansion joint device for bridges, and more specifically, to bridge the T-shaped steel and waterproof rubber material installed in the joint portion of the bridge can be easily combined construction of the waterproof rubber material It relates to expansion joint.

General bridge expansion joints. Rubber packing is applied to the joints of the slabs installed in the bridge by heat sealing and adhesive.

Therefore, as time passes, leakage occurs at the joints of the slab and rust is generated in the steel structures under the bridge due to the leakage, which causes corrosion of the steel and repairs due to defects several times.

In addition, when the joint part of the new rubber is damaged earlier than steel and non-concrete concrete by traffic load, new construction of the bridge or foreign matter, it is dropped and the surface water flowing into the expansion joint in the rain flows into the lower part of the bridge. There is a problem that has a detrimental effect on the bridge device and the piers.

Conventional expansion joint device for solving the above problems, the one-component parent permeable waterproofing agent applied to the surface of the block-out structure, and the head of the structure opening to protect the head of the structure opening, is installed on the head of both structure openings, the surface Steel angle coated with rust preventive agent, elastic concrete or non-concrete concrete placed in the rear of steel angle to absorb impacts by load, and grooves that can contain adhesive on both sides, and inserted into steel adhesive And a sealing material attached to each other to seal and connect the two steel angles.

A steel cover plate is installed on the upper part of the steel angle and the sealing material, and the steel cover plate is fixed at one side of the steel angle and the structure by a high tension bolt.

The other side of the steel cover plate is configured to allow free horizontal and vertical movement, the high tension bolt for fixing the steel cover plate is mounted through the washer and synthetic rubber pad ring.

Background art of the present invention is disclosed in Republic of Korea Patent Publication No. 10-0469167 (published May 27, 2005, the name of the invention: waterproof expansion joint device for the station).

The general expansion joint device has a problem in that it is difficult to reduce manufacturing costs because the technical configuration is complicated and additionally uses a permeable waterproof agent, a rust preventive agent, an elastic concrete, etc. in manufacturing the expansion joint device.

Therefore, there is a need for improvement.

An object of the present invention is to provide an extension joint device for a bridge that can be easily installed in the waterproof rubber material by fitting the T-type steel and the waterproof rubber material installed in the joint portion of the bridge.

In addition, the present invention can omit the use of the waterproofing agent, rust preventive agent and elastic concrete in the joint portion of the bridge, and an object of the present invention is to provide a stretch joint device for bridges that can reduce the manufacturing cost.

The present invention, a plurality of T-shaped steel is provided at the end of the slab forming a joint of the bridge; A waterproof rubber material installed between the T-type steels and preventing moisture introduced between the joint parts from being introduced into the slab; Fixing part for fitting the waterproof rubber material to the T-type steel; And a coupling member preventing the waterproof rubber material from being separated from the fixing part.

In addition, the T-type steel of the present invention is provided with a plurality of anchor bolts impregnated in the slab, the lower end of the T-type steel is formed with a first coupling bend bent in the 'b' shape, the first coupling bent portion Characterized in that the first coupling hole is coupled to the coupling member is formed.

In addition, the waterproof rubber material of the present invention is made of a concave cross-sectional shape so that the water flowing along the gap between the T-shaped steel, and the end of the waterproof rubber material is characterized in that the bent portion is formed by the fixing portion is formed. It is done.

In addition, the fixing portion of the present invention, the T-shaped steel is provided, the insertion groove portion is inserted into the bent portion; And a support member inserted into the bent portion and pressurizing the bent portion toward the insertion groove portion.

In addition, the insertion groove portion of the present invention is characterized in that the plurality of pieces are installed to maintain the spacing on the T-shaped steel, the cross-sectional shape is bent in a 'b' shape.

In addition, the support member of the present invention is in close contact with the T-shaped steel is formed in a long panel shape to be inserted into the plurality of insertion grooves at the same time, the bottom is bent in a 'b' shape to form a second coupling bent portion, The second coupling bent portion is characterized in that the second coupling hole is formed.

In addition, the support member of the present invention is in close contact with the T-shaped steel is formed in a long panel shape to be inserted into the plurality of insertion grooves at the same time, the bottom is bent in a '∪' shape to form a second coupling bend, The second coupling bent portion is characterized in that the second coupling hole is coupled to the coupling member is formed.

In addition, the fixing portion of the present invention is characterized in that it comprises a support member which is inserted into the bent portion, for pressing the outer surface of the bent portion to the inner wall side of the T-shaped steel.

In addition, the fixing portion of the present invention, the T-shaped steel is provided, the insertion groove portion is inserted into the bent portion; And a support member inserted into the bent portion and urging the bent portion toward the insertion groove portion. A plurality of second coupling holes are formed in the support member to be coupled to a plurality of first coupling holes provided in the T-shaped steel; The first coupling hole portion and the second coupling hole portion is characterized in that it comprises a groove shape of the outer end opening.

In addition, the waterproof rubber material of the present invention, the fresh water portion of the concave cross-sectional shape is formed so that the water flowing along the gap between the T-shaped steel is formed, the bent portion is constrained by the fixing portion at the end of the waterproof rubber material It is characterized by being formed.

In addition, the fixing portion of the present invention is characterized in that it comprises a support member which is inserted into the bent portion, and presses the bent portion to the bottom surface of the T-shaped steel and the inner wall side of the T-shaped steel.

Further, in the T-shaped steel of the present invention, a plurality of peaks and valleys are alternately formed continuously, the acid is inserted into the valleys of the other T-shaped steels, and the hills of the other T-shaped steels are inserted into the valleys. It is characterized by being installed.

In the expansion joint device for bridges according to the present invention, a pair of T-type steel is installed at the joint of the bridge, a waterproof rubber material is installed between the T-type steel, and the waterproof rubber material is fitted to the T-type steel by the fixing part. Therefore, there is an advantage that the installation of the waterproof rubber material can be easily performed.

In addition, the expansion joint device for bridges according to the present invention, the waterproof rubber material is fitted to the T-type steel by the fixing portion, the fixed portion and the T-type steel is coupled by the coupling member, so that the fixed portion is separated from the T-type steel It can be prevented, since the use of a separate waterproofing agent, rust preventive agent and elastic concrete is not required, there is an advantage that can reduce the cost required for the installation of expansion joints.

1 is an exploded perspective view showing the expansion joint device for a bridge according to the first embodiment of the present invention.
2 is a cross-sectional view showing the expansion joint device for a bridge according to the first embodiment of the present invention.
3 is a cross-sectional view showing the expansion joint device for a bridge according to the second embodiment of the present invention.
4 is an exploded perspective view showing the expansion joint device for a bridge according to the third embodiment of the present invention.
5 is an exploded perspective view showing the expansion joint device for a bridge according to the fourth embodiment of the present invention.
Figure 6 is an exploded perspective view showing the expansion joint device for a bridge according to the fifth embodiment of the present invention.
7 is a cross-sectional view and an exploded cross-sectional view showing the expansion joint device for a bridge according to the sixth embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the expansion joint device for a bridge according to the present invention.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is an exploded perspective view showing a bridge expansion joint according to a first embodiment of the present invention, Figure 2 is a cross-sectional view showing a bridge expansion joint according to a first embodiment of the present invention.

1 and 2, the expansion joint device for a bridge according to an embodiment of the present invention, a plurality of T-shaped steel 30 is provided at the end of the slab 10 forming the joint portion of the bridge, T-shaped It is installed between the steel 30, the waterproof rubber material 50 and the waterproof rubber material 50 to prevent the water flowing between the joints to be introduced into the slab 10 inside the T-type steel (30). It includes a fixing part 70 for coupling, and a coupling member 76 for preventing the waterproof rubber material 50 from being separated from the fixing part 70.

T-type steel 30 is produced by cutting the H beam of building materials in a T shape, so that the upper surface of the T-type steel 30 is seated on the step formed in the end of the slab 10 forming the top plate of the bridge. Install.

The outer wall of the T-shaped steel 30 is installed so as to be impregnated at the ends of the slab 10, each of which is installed at the end of the different slab 10 is waterproof between a pair of T-shaped steel 30 disposed to face each other The rubber material 50 is installed.

Therefore, the water flowing into the gap between the pair of T-type steel 30 is fresh water to the waterproof rubber material 50 can be prevented from flowing into the gap between the slab (10).

The waterproof rubber material 50 is one end of the waterproof rubber material 50 to the one side T-shaped steel 30 by the fixing portion 70 so as to receive the water flowing in the gap between the T-type steel (30) Is connected, the other end of the waterproof rubber material 50 is connected to the other T-shaped steel 30 by the fixing portion 70.

When the waterproof rubber material 50 is connected to the T-type steel 30, the end portion of the waterproof rubber material 50 is fitted to the T-type steel 30 by the fixing part 70, so that the installation of the waterproof rubber material 50 is performed. It can be performed easily.

In addition, the present embodiment can reduce the cost required for installing the waterproof rubber material 50 because the use of a separate waterproof agent, rust preventive agent and elastic concrete is not required when installing the waterproof rubber material 50.

A plurality of anchor bolts 32 impregnated in the slab 10 are installed in the T-type steel 30, and a first coupling bent portion 34 that is bent in a 'b' shape is formed at the lower end of the T-type steel 30. The first coupling bent portion 34 is formed with a first coupling hole 36 to which the coupling member is coupled.

Since a plurality of anchor bolts 32 are welded at regular intervals on the outer wall of the T-type steel 30, when the slab 10 is manufactured, the T-type steel 30 is disposed to settle on the step of the slab 10. The anchor bolt 32 is inserted into the interior of the slab 10, the T-shaped steel 30 is installed at the end of the slab (10).

The lower end of the T-shaped steel 30 is provided with a first coupling bend 34 that is bent in the outward direction, the first coupling bend 34 is a plurality of fixing parts 70 to be coupled by the coupling member 76 The first coupling hole 36 is formed.

The waterproof rubber material 50 is formed in a concave cross-sectional shape so that the water flowing along the gap between the T-type steel 30 is fresh, the bent portion is constrained by the fixing part 70 at the end of the waterproof rubber material (50) 52 is formed.

Since the waterproof rubber material 50 is formed in a long panel shape and disposed inside the gap between the T-type steels 30, the moisture introduced along the gap between the T-type steels 30 is the upper surface of the waterproof rubber material 50. It is fresh water.

The cross-sectional shape of the waterproof rubber material 50 is concave in the downward direction can be fresh water, and both ends of the waterproof rubber material 50 is formed with a '∩' shaped bent portion 52 so that the curved portion 52 is It can be easily restrained by the fixing portion 70.

The fixed part 70 is provided in the T-shaped steel 30, and is inserted into the bent part 72 into which the bent part 52 is inserted, and is bent into the bent part 52, and the bent part 52 is inserted into the insertion groove part 72 side. And a supporting member 74 for pressing.

Insertion groove 72 is wrapped around the outer wall of the bent portion 52, the support member 74 is inserted into the interior of the bent portion 52 to press the bent portion 52 into the insertion groove 72, so waterproof rubber material (50) Both ends of the c) are restrained by the insertion groove 72 and the support member 74.

Therefore, both ends of the waterproof rubber material 50 can be installed in a fitting manner to the inner wall of the pair of T-type steel (30).

Insertion groove 72 is provided with a plurality of T-shaped steel 30 to maintain the spacing, the cross-sectional shape is made of a 'b' shape bent.

Insertion groove 72 is bent in the cross-sectional shape of 'b' shape so that the upper end of the insertion groove 72 is welded to the inner wall of the T-shaped steel 30 is formed an inner space of the upper concave shape.

Therefore, the bent portion 52 formed at both ends of the waterproof rubber material 50 can be inserted to be in close contact with the inner wall of the insertion groove (72).

The support member 74 is formed in a long panel shape so as to be in close contact with the T-shaped steel 30 and inserted into the plurality of insertion grooves 72, and the lower end is bent in a 'b' shape to form a second coupling bent portion 74a. In the second coupling bent portion 74a, a second coupling hole portion 74b is formed.

Since the second coupling bent portion 74a is bent in the outward direction, when the support member 74 is in close contact with the inner wall of the T-shaped steel 30, the second coupling bent portion 74a is in close contact with the bottom surface of the first coupling bent portion 34.

When the support member 74 is in close contact with the T-shaped steel 30, the first coupling hole portion 36 and the second coupling hole portion 74b are disposed to face each other, and the first coupling hole portion 36 and the second coupling hole portion are disposed. The support member 74 is coupled to the T-shaped steel 30 by fastening the coupling member 76 including the bolt 76a and the nut 76b to the 74b.

Looking at the operation of the expansion joint device for a bridge according to an embodiment of the present invention configured as described above are as follows.

First, when installing the expansion joint device, each of the T-shaped steel 30 provided with anchor bolts 32 is installed at the end of the slab 10, and the insertion groove 72 provided in the pair of T-shaped steel 30. Insert bends 52 formed at both ends of the waterproof rubber material 50, respectively.

Subsequently, the upper end of the supporting member 74 is inserted into the bent part 52 to press the bent part 52 into the insertion groove 72, and the first coupling hole part 36 and the second coupling hole part 74b are mutually inclined. The position of the support member 74 is adjusted to be disposed to face each other.

When the bolt 76a and the nut 76b are assembled by fastening the bolt 76a and the nut 76b to the first coupling hole 36 and the second coupling hole 74b, the support member 74 is in close contact with the T-shaped steel 30 and the support member 74 is formed. The upper end of the bent portion 52 is pressed into the insertion groove 72 side waterproof rubber material 50 is fitted to the T-type steel (30).

As described above, since the waterproof rubber material 50 can be installed in the T-type steel 30 by the fitting method, the time required for the installation of the waterproof rubber material 50 can be reduced, and a separate waterproof agent, rust inhibitor, and elastic concrete It is not required to use, so it is possible to reduce the cost of installing expansion joints.

After the installation of the waterproof rubber material 50 is completed, the water flowing into the gap between the T-type steel 30 is fresh water on the upper surface of the waterproof rubber material 50, the water in the front and rear direction along the waterproof rubber material (50) Since it is discharged, it is possible to prevent the inflow of moisture into the slab 10 forming the bridge.

3 is a cross-sectional view showing the expansion joint device for a bridge according to the second embodiment of the present invention.

Referring to Figure 3, the support member 174 of the expansion joint device for bridges according to another embodiment of the present invention is in close contact with the T-shaped steel 130 in a long panel shape to be inserted into the plurality of insertion grooves 172 at the same time It is formed, the bottom is bent in a '∪' shape to form a second coupling bent portion 174a, the second coupling bent portion 174a is formed with a second coupling hole portion 174b to which the coupling member 176 is coupled.

This embodiment is characterized in that the second coupling bent portion 174a is bent in a '∪' shape to the outer side so that the lower end of the T-shaped steel 130 is inserted, coupled to the outer surface of the second coupling bend 174a The second coupling hole 174b to which the member 176 is coupled is formed.

Accordingly, when the support member 174 is inserted into the insertion groove 172 to fit the waterproof rubber material 150, the lower end of the T-type steel 130 is inserted into the second coupling bent portion 174a, and the second coupling bent portion. The outer side of the (174a) it is possible to easily assemble the coupling member 176.

4 is an exploded perspective view showing the expansion joint device for a bridge according to the third embodiment of the present invention.

Referring to FIG. 4, the fixing part 270 of the expansion joint device for a bridge according to the third embodiment of the present invention is inserted into the bent part 252 of the waterproof rubber material 250 and the outer surface of the bent part 252. It includes a support member 274 for pressing to the inner wall side of the T-shaped steel (230).

This embodiment is characterized in that the coupling groove portion 36 (see Fig. 1) formed in the T-shaped steel 230 is omitted in comparison with the first embodiment, the support member 274 by the coupling member 276 is T When in close contact with the inner wall of the shape steel 230, the upper end of the support member 274 presses the bent portion 252 to the inner wall side of the T-shaped steel 230 to restrain both ends of the waterproof rubber material 250.

5 is an exploded perspective view showing the expansion joint device for a bridge according to the fourth embodiment of the present invention.

Referring to FIG. 5, the fixing part 370 of the expansion joint apparatus for a bridge according to the fourth embodiment of the present invention is provided in the T-shaped steel 330, and the insertion groove part 372 into which the bending part 352 is inserted is provided. And a support member 374 inserted into the bent portion 352 to press the bent portion 352 toward the insertion groove 372, and the support member 374 includes a plurality of agents provided in the T-shaped steel 330. A plurality of second coupling hole portions 374b are formed to be coupled to the first coupling hole portion 336.

The first coupling hole 336 provided in the T-shaped steel 330 is formed by welding a plurality of pieces to the outer wall of the T-shaped steel 330, and supports the first coupling hole 336 so as to face the first coupling hole 336. A plurality of second coupling hole portions 374b are formed on the outer wall.

The second coupling hole portion 374b of the present embodiment has a material cost required to manufacture the second coupling hole portion 374b as compared with the second coupling hole portion 74b (see FIG. 1) of the first embodiment having a long panel shape. Can be reduced.

In addition, the first coupling hole portion 336 and the second coupling hole portion 374b of the present embodiment are formed with a 'U'-shaped groove portion whose outer end is opened.

Accordingly, when the first coupling hole 336 and the second coupling hole 374b are coupled by the coupling member 376, the coupling member 376 may be coupled to the first coupling hole 336 and the second coupling hole 374b from the lateral direction. At the same time, the support member 374 can be easily assembled in the workshop where the installation space is narrow.

Figure 6 is an exploded perspective view showing the expansion joint device for a bridge according to the fifth embodiment of the present invention.

Referring to FIG. 6, in the T-shaped steel 430 of the expansion joint apparatus for a bridge according to the fifth embodiment of the present invention, a plurality of peaks 430a and valleys 430b are alternately formed in succession. 430a is inserted into the valley 430b of the other T-shaped steel 430, and the hill 430a of the other T-shaped steel 430 is inserted into the valley 430b.

The peak 430a and the valley 430b are formed at the upper inner end of the T-shaped steel 430, and the pair of T-shaped steels 430 installed at the end of the slab 10 (see FIG. 430a and the valley 430b are installed to alternately face each other.

Therefore, when the pair of T-shaped steel 430 is installed at the end of the pair of slabs (see FIG. 2), the mount 430a of the T-shaped steel 430 installed on one side is a T-shaped steel ( The mountain 430a of the T-shaped steel 430 installed at the other side is inserted into the valley 430b of the T-shaped steel 430 installed at one side and inserted into the valley 430b of the 430.

As described above, when the pair of T-shaped steels 430 are installed to face each other, the interval between the T-shaped steels 430 is composed of the peaks 430a and the valleys 430b and alternately inserted into the slab 10: It is possible to prevent the inflow of foreign matter at intervals (see FIG. 2).

In addition, in the present embodiment, the insertion groove 472 provided in the T-shaped steel 430 is formed along the inner wall of the T-type steel 430, and the cross-sectional shape of the insertion groove 472 is bent in a '-' shape. Therefore, since the entire bent portion 452 of the waterproof rubber material 450 inserted into the insertion groove 472 is pressed, the curved portion 452 can be effectively prevented from being separated from the insertion groove 472.

7 is a cross-sectional view and an exploded cross-sectional view showing the expansion joint device for a bridge according to the sixth embodiment of the present invention.

Referring to FIG. 7, the waterproof rubber material 550 of the expansion joint apparatus for a bridge according to the sixth embodiment of the present invention has a concave cross-sectional shape so that water introduced along the gap between the T-shaped steels 530 is fresh. The fresh water part 550a is formed, and the bent part 552 is formed at the end of the waterproof rubber material 550 by the fixing part 570.

The waterproof rubber material 550 according to the present embodiment has a cross-sectional shape of 'M' shape, and has a fresh water part 550a at the center of the upper surface, and both end portions thereof extend in the downward direction so that the inner wall and the solid of the T-type steel 530 are formed. It is interposed between the government 570 and bound.

The fixed portion 570 is inserted into the bent portion 552 and includes a support member 574 that presses the bent portion 552 toward the bottom of the T-shaped steel 530 and the inner wall side of the T-shaped steel 530.

Compared to the first embodiment, the present embodiment has a cross-sectional shape of the waterproof rubber material 550 in a 'M' shape, and an insertion groove 72 (refer to FIG. 1) is omitted in comparison with the first embodiment. to be.

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 embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

In addition, a bridge expansion joint has been described as an example, but this is merely exemplary, the expansion joint of the present invention can be used in other products other than the bridge expansion joint.

Accordingly, the true scope of the present invention should be determined by the following claims.

10: slab 32: anchor bolt
34: first coupling bent portion 36: the first coupling hole
50: waterproof rubber material 52: bend
70: fixing portion 72: insertion groove portion
74: support member 74a: second coupling bend
74b: second coupling hole portion 76: coupling member
76a: bolt 76b: nut

Claims (12)

A plurality of T-shaped steels installed at an end portion of the slab forming a joint of the bridge, a waterproof rubber material disposed between the T-shaped steels and preventing water introduced between the joints from flowing into the slab; And a fixing part for fitting the waterproof rubber material to the T-type steel, and a coupling member for preventing the waterproof rubber material from being separated from the fixing part, wherein the T-type steel has a plurality of anchor bolts impregnated in the slab. Installed, the waterproof rubber material is made of a concave cross-sectional shape so that the water flowing along the gap between the T-shaped steel, and the expansion joint for the bridge is formed at the end of the waterproof rubber material is bent by the fixing portion In the apparatus,
A first coupling bend formed at a lower end of the T-shaped steel is bent in a 'b' shape, and the first coupling bend is formed with a first coupling hole to which the coupling member is coupled;
The fixing unit includes:
An insertion groove provided in the T-shaped steel and into which the bending part is inserted; And
A support member inserted into the bent portion and pressing the bent portion toward the insertion groove portion;
The insertion groove portion is spaced in the T-shaped steel is provided with a plurality, and the cross-sectional shape is made to be bent '''shape;
The support member is in close contact with the T-shaped steel is formed in a long panel shape to be inserted into the plurality of insertion grooves at the same time, the bottom is bent in a 'b' shape to form a second coupling bend, the second coupling bend portion Two coupling holes are formed;
The bent portion is formed by bending both ends of the waterproof rubber material in a '∩'shape;
The insertion groove surrounds the outer wall of the bent portion, and the support member is inserted into the bent portion to press the bent portion into the insertion groove portion;
And the second coupling bent portion is bent in the outward direction of the T-shaped interlayer so as to be in close contact with the bottom surface of the first coupling bend. delete delete delete delete delete A plurality of T-shaped steels installed at an end portion of the slab forming a joint of the bridge, a waterproof rubber material disposed between the T-shaped steels and preventing water introduced between the joints from flowing into the slab; And a fixing part for fitting the waterproof rubber material to the T-type steel, and a coupling member for preventing the waterproof rubber material from being separated from the fixing part, wherein the T-type steel has a plurality of anchor bolts impregnated in the slab. Installed, the waterproof rubber material is made of a concave cross-sectional shape so that the water flowing along the gap between the T-shaped steel, and the expansion joint for the bridge is formed at the end of the waterproof rubber material is bent by the fixing portion In the apparatus,
A first coupling bend formed at a lower end of the T-shaped steel is bent in a 'b' shape, and the first coupling bend is formed with a first coupling hole to which the coupling member is coupled;
The fixing unit includes:
An insertion groove provided in the T-shaped steel and into which the bending part is inserted; And
A support member inserted into the bent portion and pressing the bent portion toward the insertion groove portion;
The insertion groove portion is spaced in the T-shaped steel is provided with a plurality, and the cross-sectional shape is made to be bent '''shape;
The support member is in close contact with the T-shaped steel is formed in a long panel shape to be inserted into the plurality of insertion grooves at the same time, the bottom is bent in a '∪' shape to form a second coupling bent portion, the second coupling bent portion is A second coupling hole portion to which the coupling member is coupled is formed;
The bent portion is formed by bending both ends of the waterproof rubber material in a '∩'shape;
The insertion groove surrounds the outer wall of the bent portion, and the support member is inserted into the bent portion to press the bent portion into the insertion groove portion;
The second coupling bent portion is bent in the outward direction of the T-shaped steel, the second coupling hole portion is the expansion joint device for a bridge, characterized in that formed on the outer surface of the second coupling bend. delete A plurality of T-shaped steels installed at an end portion of the slab forming a joint of the bridge, a waterproof rubber material disposed between the T-shaped steels and preventing water introduced between the joints from flowing into the slab; And a fixing part for fitting the waterproof rubber material to the T-type steel, and a coupling member for preventing the waterproof rubber material from being separated from the fixing part, wherein the T-type steel has a plurality of anchor bolts impregnated in the slab. Installed, the waterproof rubber material is made of a concave cross-sectional shape so that the water flowing along the gap between the T-shaped steel, and the expansion joint for the bridge is formed at the end of the waterproof rubber material is bent by the fixing portion In the apparatus,
The fixing unit includes:
An insertion groove provided in the T-shaped steel and into which the bending part is inserted; And
A support member inserted into the bent portion and pressing the bent portion toward the insertion groove portion;
A plurality of second coupling holes are formed in the support member to be coupled to a plurality of first coupling holes provided in the T-shaped steel;
The first coupling hole portion and the second coupling hole portion include a groove portion having an open outer end portion;
The bent portion is formed by bending both ends of the waterproof rubber material in a '∩'shape;
The insertion groove surrounds the outer wall of the bent portion, and the support member is inserted into the bent portion to press the bent portion into the insertion groove portion;
A plurality of pieces of the first coupling holes are welded to the outer wall of the T-shaped steel, and a plurality of second coupling holes are formed on the outer wall of the support member so as to face the first coupling holes;
The first coupling hole portion and the second coupling hole portion are formed of a 'U'-shaped groove portion at which an outer end thereof is opened;
The insertion groove portion is formed long along the inner wall of the T-shaped steel, the cross-sectional shape of the insertion groove portion is a stretch joint device for a bridge, characterized in that the curved "b" shape. delete delete delete

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