KR20180116841A - Construction Method for Elastic Support Layer between Track and Substructure - Google Patents

Abstract

The present invention relates to an installation method for a track upper plate body. With the present invention, a new track can be swiftly and stably installed without an imbalance of the support reaction force of a track upper plate structure and it is possible to remove an existing sleeper and an existing rail on a route where a track upper plate for noise reduction is in operation. The method for installing a track upper plate body for a railroad bridge on a longitudinal girder includes a first step of installing a fence-shaped outflow preventing dam on the upper surface of the longitudinal girder; a second step of placing the track upper plate body in contact with the upper surface of the outflow preventing dam so as to be spaced apart from the upper surface of the longitudinal girder; a third step of filling a liquid resin into the space provided by the longitudinal girder, the track upper plate body, and the outflow preventing dam; a fourth step of performing horizontal adjustment while adjusting the height of the front, rear, left, and right sides of the track upper plate body; and a fifth step of fixing the track upper plate body after the resin is cured.

Description

Technical Field [0001] The present invention relates to a method of installing a track top plate body for a railway car,

The present invention relates to a track top plate for a railway bridge, and more particularly to a track top plate for railway bridges, more specifically to a rail track bridge which removes a previously installed railroad track and a rail on a currently operating track, And a method of installing the orbital top plate main body for installing the orbit.

If the existing railway structures have been completed for a considerable time, they will need to be replaced due to aging. Many of the existing railway bridges have aged 40 to 70 years or more and have many problems in the safety of the train operation and damage to the noise and vibration.

Railway bridges are mainly made of steel bridges in the form of bridges and hangings, and have a form of railroad ties on them. More specifically, a longitudinal girder or a transverse beam is installed on the pier or alternation, and the rail is installed on the sleeper. Many complaints have been filed against them for noise or safety reasons, and the necessity of replacing them is well known. However, it is desirable that the replacement does not interfere with the operation of the railway vehicle or minimize the interference. For this purpose, the existing sleepers and rails are removed and the new rail fixing system is combined with the orbital top plate coupling structure to improve the road surface resistance to increase the rail resistance, thereby making it possible to eliminate noise caused by noise and reduce noise vibration , Load carrying capacity and durability, it is necessary not only to solve the noise vibration complaint but also to increase the transportation capacity according to the speed increase.

On the other hand, as a method for fixing a new resin fixed buried orbit upper plate main body on a girder, a pre-manufactured elastic pad is interposed between the upper or lower plate main body and the girder. However, the planar shape of the joining point is irregular due to the existing rivet, bolt or welding by providing the supporting surface for mounting the upper main body of the orbiter on the girder by a point supporting method while maintaining flatness by using an iron plate or the like. In this case, the unbalance of the supporting reaction force due to the load transmitted from the upper part may cause serious consequences to the safety of the entire railway bridge structure and the safety of the vehicle operation. In addition, since such loads are used for a long period of time in an unbalanced state of the load, excess load on any portion may cause destruction of the structure.

Korean Patent Application No. 20-2001-0013955 Korean Patent Application No. 10-2007-0016538

The object of the present invention with respect to the above problems is to improve the speed of the existing railway and the load passing through the reduction of the noise vibration, increase of the load carrying capacity and maintenance cost by the long talk of the existing railway bridge, And a method of installing a track top plate main body provided with a resin-fixed rail fixing device.

More specifically, in the case of installing the orbital upper plate body on the girder of the existing bridge within a limited time of operation, even if the upper surface of the girder is not flat, A railway track for ensuring the safety of the structure by improving the durability caused by the vibration fatigue breakdown due to the long-term train by preventing the imbalance of the supporting reaction force due to the load transmitted from the upper part by closely supporting the upper plate main body and the girder contact portion And an object of the present invention is to provide a method of installing an upper plate body.

The purpose of the above is;

A main beam provided at a right angle to the extending direction of the rail and provided with a plurality of spaced apart portions and provided with a rail trough installation groove for installing a rail trough at a position where the rail is installed; A sub beam fixedly installed on both sides of the main beam at right angles; A concrete part installed on both sides of the main beam along a longitudinal direction of the rail and cured by placing concrete on both sides of the main beam by using a mold; And a rail installed on the concrete portion, the method comprising the steps of:

A first step of installing an outflow preventing dam on the upper surface of the longitudinal girder in the form of a fence;

A second step of placing the orbital upper plate main body in contact with the upper surface of the outflow preventing dam so as to be spaced apart from the upper surface of the longitudinal girder;

A third step of filling a liquid resin into the space provided by the longitudinal girder, the orbital upper plate body and the outflow preventing dam;

A fourth step of horizontally adjusting the height of front, rear, left, and right sides of the orbital upper plate main body;

A fifth step of fixing the orbital upper plate main body after the resin is cured;

Wherein the upper rail is provided with an upper rail and a lower rail.

According to another aspect of the present invention, in the fourth step, the top of the setting bolt is supported on the upper surface of the longitudinal girder by screwing the setting bolt vertically through the upper rail main body by screwing, And can be spaced upward relative to the longitudinal girder.

According to another aspect of the present invention, the first step includes a longitudinal dam installation step of installing a linear longitudinal dam on the upper surface of the flange of the I beam constituting the longitudinal girder along the longitudinal direction of the flange, ;

Wherein the longitudinal dam installation step comprises:

Providing a longitudinal dam on each side of the flange along its longitudinal direction,

Tensioning both ends of a tension rod of a longitudinal dam in which the outer surface is surrounded by a sponge and a tension wire such as a wire or a wire is inserted into the inner surface and fixing both ends of the tension wire to the longitudinal girder;

And adhering and fixing the foamed foam in the form of a wire in the transverse direction of the upper surface of the flange.

Another object of the present invention is to provide:

A main beam provided at a right angle to the extending direction of the rail and provided with a plurality of spaced apart portions and provided with a rail trough installation groove for installing a rail trough at a position where the rail is installed; A sub beam fixedly installed on both sides of the main beam at right angles; A concrete part installed on both sides of the main beam along a longitudinal direction of the rail and cured by placing concrete on both sides of the main beam by using a mold; And a rail installed on the concrete part, the method comprising the steps of:

A first step of providing an outflow preventing dam in the form of a fence on the upper surface of the transverse beam;

A second step of placing the orbital upper plate main body in contact with the upper surface of the outflow preventing dam so as to be spaced apart from the upper surface of the lateral beam;

A third step of filling a liquid resin into the space provided by the lateral beam, the orbital upper plate body and the outflow preventing dam;

A fourth step of horizontally adjusting the height of front, rear, left, and right sides of the orbital upper plate main body;

A fifth step of fixing the orbital upper plate main body after the resin is cured;

Wherein the upper rail is provided with an upper rail and a lower rail.

According to another aspect of the present invention, the first step comprises:

Is fixed to the upper surface of the transverse beam by welding, and both ends are bent so as to surround the transverse beam, And a step of fixing the outflow preventing dam to the bottom surface of the main body seating plate with an adhesive.

In the present invention, the fixing device may be a clamp.

In the present invention, the resin may be a ultra rapid polyurethane resin which is cured within 2 to 3 hours.

According to the present invention, it is possible to elastically fix a rail and a track structure and a lower structure in a continuous support form after demolishing a tie rail and a rail of an existing bridge, minimize the reinforcement of the alternate or pier, It is possible to increase the durability of the railroad bridge after assembling, to facilitate the maintenance such as rail refinement after construction, and to reduce the noise vibration due to the railway interconnection of the existing railway bridge and isolation of vibration between the structures at economical cost.

The tight coupling between the upper body of the track and the existing lower structure and the formation of the elastic layer can remarkably improve the driving stability, durability and noise and vibration reduction by forming equal supporting reaction force and vibration isolation.

According to the present invention, the above-mentioned problem has been solved by introducing the field-applied supporting elastic layer construction method using the ultra-rapid polyurethane resin so that the supporting elastic layer can be formed within a given time regardless of the shape of the lower structure coupling surface .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a rail girder bridge according to an embodiment of the present invention; FIG.
2 is a perspective view of a track girder upper rail main body according to an embodiment of the present invention installed on a longitudinal girder.
3 is a perspective view showing a state in which an upper rail main body for a railway bridge according to an embodiment of the present invention is fixed to the longitudinal direction heat.
4 is a cross-sectional view taken along the line AA in Fig.
FIG. 5 is a perspective view showing a stepwise process of installing an upper rail main body for a railway bridge on a longitudinal girder according to an embodiment of the present invention.
FIG. 6 is a perspective view showing a combination of an upper rail main body and a transverse beam for a railway bridge according to another embodiment of the present invention. FIG.
FIG. 7 is a perspective view of a railway bridge upper rail according to another embodiment of the present invention,
8 is a cross-sectional view taken along line BB in Fig.
9 is a perspective view of an outflow preventing dam according to another embodiment of the present invention.
10 is a perspective view showing a part of the installation process of the upper rail main body for a railroad bridge according to another embodiment of the present invention.
11 is a cross-sectional view taken along line CC in Fig.
12 is a frame structure of an upper rail main body for a railway bridge according to an embodiment of the present invention.

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

The present invention proposes a method of installing on a longitudinal girder (plate-type bridge) or a transverse beam (truss bridge, lower plate bridge, etc.) installed at a pier or alternate to support the orbital upper plate main body. The same direction as the extending direction of the rail is referred to as a longitudinal direction, and the direction perpendicular to the rail is referred to as a lateral direction. Hereinafter, it is abbreviated simply as 'girder' or 'beam'.

An elastic pad is interposed between the main body of the track and the girder and between the main body of the track and the beam to damp vibration or noise. As mentioned above, if the elastic pads that have already been made are inserted between them, the upper surface of the girder or beam may not be smooth, which may cause various problems.

The present invention prevents this problem in advance by installing an elastic pad on the spot at the time of field construction. This is because the liquid resin poured at the site can fill the uneven surface. According to this, the adhesion between the orbital upper plate main body and the girder (or beam) is excellent.

The field-applied support elastic layer construction method can be applied to both the lower support structure type, that is, the longitudinal girder type (plate type bridge) and the transverse beam type (truss bridge, lower bridge type bridge, etc.). The longitudinal girder type is constructed as a continuous elastic support, and the transverse beam type is constructed as a partial elastic support type.

A simple construction procedure is as follows: The tracked upper plate body 100 preliminarily manufactured in the factory is mounted on the girder 10 or the beam 10 ', the height of the upper plate body 100 is adjusted by a height adjusting spindle, After the resin is injected to form the elastic layer, the orbital upper plate body 100 is fixed with the clamp capable of supporting the lifting force and the longitudinal load. In order to resist the lateral force, a shear key is installed on the inside of the orbital top plate in the girder type, and a shear key is installed on the left and right sides of the beam in beam form. Hereinafter, each embodiment will be described in detail. First, a method of installing an orbital upper plate main body on a girder will be described with reference to Figs. 1 to 5. Fig.

The upper rail main body 100 is a steel reinforced concrete (SRC) having a structure optimized for self weight and noise vibration reduction and includes a main beam 120, a sub beam, a concrete portion 110 and a rail 300.

12, the main beams 120 are provided at right angles to the extending direction of the rails 300, and a plurality of main beams 120 are provided with intervals therebetween. Rail mounting grooves 121 for mounting the rails 300 are provided on the main beam 120 at two locations where the rails 300 are installed. The sub beams 125 are fixed at right angles to both sides of the main beam 120 to have a frame structure. The concrete part 110 is installed on both sides of the main beam 120 along the longitudinal direction of the rail and is formed by placing and curing concrete on both sides of the main beam 120 by using a formwork. A reinforcing bar is laid on the concrete part (110).

In the first step, the outflow preventing dam 20 is installed on the upper surface of the girder 10 in the form of a fence (see Figs. 4 (a) and 4 (b)). The outflow preventing dam 20 is provided so as not to flow sideways and to be filled with a predetermined height when the liquid resin 26 is laid on the girder 10. [

The outflow preventing dam 20 is installed over the whole section L along the length of the girder 10 as shown. Therefore, the outflow preventing dam 20 is composed of a pair of long sides corresponding to the length of the girder and a pair of short sides corresponding to the width of the girder. The long side and the short side join together to form an elongated rectangle.

According to the embodiment of the present invention, the short side lateral dam 21 can be installed by bonding the linear foamed foam with an adhesive. However, the longitudinal dam 23 constituting the long side has a problem in fixing the foamed foam with an adhesive. It is necessary to install the longitudinal foam damper 23 as long as the length of the girder 10. After installing the longitudinal dam 23, The flange 12 of the I beam constituting the girder is provided with a flange 12 on the side of the flange 12, A longitudinal dam 23, that is, a longitudinal dam, is enclosed by a sponge 24 on the outside, and a tension wire such as a wire or a wire is wound around the longitudinal dam 23, Both ends of the tension wire 25 of the longitudinal dam 23 are tightly pulled and then the both ends thereof are fixed to the girder 10. It is temporarily fixed by welding and then removed by a grinder If the longitudinal dam 23 is fixed by using the tension of the wire, it is possible to touch the longitudinal dam 23 during the operation. The sponge 24 may return to its original shape to be retained in the outflow preventing dam 20. The end surface of the sponge 24 may have a circular shape with a hole through which the tension wire 25 passes, but the present invention is not limited thereto.

The second step is to put the orbital upper plate main body 100 in contact with the upper surface of the outflow preventing dam 20 (see FIGS. 5A and 5B). Crane or other heavy-duty transport equipment may be used. When the orbital upper plate main body 100 is completely pressed against the outflow preventing dam 200, there is no space for filling the elastic member, and therefore, it must be positioned at a predetermined distance from the upper surface of the girder 10 (see FIG. The interval between the orbital upper plate body 100 and the girder 10 is preferably 10 to 20 mm. That is, the interval is the height of the space in which the elastic member is filled and the height of the elastic pad.

The height adjustment bolts 130 are vertically inserted into the corner portions of the upper rail main body 100 and are then supported on the upper surface of the girder 10. A nut (not shown) for screwing the height adjusting bolt 130 is inserted into the concrete portion 110.

The third step is a step of filling the liquid resin 26 in the sealed space provided by the girder 10, the orbital upper plate body 100 and the outflow preventing dam 20. A resin injection port 111 is provided in the orbital upper plate body 100 so as to vertically penetrate the concrete portion 100 of the orbital upper plate main body. The liquid may be a liquid polyurethane resin, and it is preferable that the liquid has a characteristic of initial curing which is completely cured in about 2 to 3 hours. When the liquid resin is cured after filling, it forms an elastic layer.

Thereafter, the fourth step of adjusting the height of the upper, lower, left, and right sides of the upper rail main body 100 is performed. This is done using the height adjustment bolts 130 described above. After the resin is cured in the fifth step, the orbital upper plate body 100 is fixed using a fixing device.

According to an embodiment of the present invention, the clamping device is a clamp 200. The clamp 200 includes a clamp body 210 having a side shape and a fastening bolt 220 vertically penetrating the clamp body. Two fastening bolts 220 are coupled to one clamp 200. An insert nut (240), to which a fastening bolt (220) can be screwed, is buried at the edge of the orbit upper plate main body. The clamp 200 is installed at a position where the main beam 120 is installed. This is because the concrete may break if it is installed in the concrete part. A loosening prevention cap 230 for preventing disassembly of the fastening bolts 220 is put on the fastening bolts 230. When the fastening bolts 220 are tightened in the state of FIG. 5C, the orbital upper plate main body 100 and the flanges 12 of the girders are tightly coupled with each other.

Hereinafter, a method of installing the orbit upper plate body 100 on the beam 10 'perpendicular to the rail will be described with reference to FIG.

And is basically the same as that provided in the girder 10. However, since the beam 10 'is provided in a square different from that of the girder 10, there are inevitably different parts. Hereinafter, other portions will be mainly described.

The present embodiment is different from the above-described embodiment in the first step of installing the outflow preventing dam 40 (see Fig. 9) on the upper surface of the beam 10 '.

"의 형태로 되어 있는 본체안착판(30)을 준비한다. 그리고 본체안착판(30)의 저면 또는 거더(10')의 상면에 유출방지댐(40)을 접착제로 고정시키는 단계를 포함할 수 있다. 본체안착판(30)의 횡판(31)은 궤도상판본체(100)의 메인빔(120)의 하부플랜지에 용접으로 고정된다. 본체안착판(30)의 일측에는 수지주입구(34)와 클램프를 설치하기 위한 클램프설치부(33)가 마련된다. 수지주입구(34)의 양측에는 볼트체결공(35)이 마련된 다. According to the present embodiment, the first step is to fix the upper surface of the beam 10 'by welding, and both ends 32 are bent so as to surround the transverse beams,

And fixing the outflow preventing dam 40 to the bottom surface of the main body seat plate 30 or the upper surface of the girder 10 'with an adhesive agent. The transverse plate 31 of the main body seat plate 30 is fixed by welding to the lower flange of the main beam 120 of the upper rail main body 100. The main body seat plate 30 has a resin injection port 34 And a clamp mounting portion 33 for mounting the clamps are provided on both sides of the resin injection port 34. Bolt fastening holes 35 are provided on both sides of the resin injection port 34. [

Also in the present embodiment, the fastening device may be a clamp 200 '. The clamp 200 'includes a pair of clamp bodies 210 bent in a diaphragm shape and a fastening bolt 220 vertically coupled to each clamp body 210. A loosening preventing cap 230 for preventing disassembly of the fastening bolts 220 is put on the fastening bolts 220.

Also in the present invention, the resin may be a polyurethane resin at ultra fast speed which is cured within 3 to 5 hours.

In order to prevent the orbital upper plate body 100 from flowing in the longitudinal direction of the beam 10 ', a bracket 50 having a L-shaped cross section is formed on the outside of the clamp 200' Can be welded to the upper surface. The clamp may be installed by a process as shown in Figs. 10 (a), (b) and (c).

According to this embodiment, the liquid resin 26 is filled in the manner shown in Fig. 8 in accordance with the procedure shown in Figs. 5A, 5B and 5C of the previous embodiment, and the resin 26 is hardened in this state, Thereby forming a pad. In this embodiment, the height and the horizontal adjustment of the orbital upper plate body 100 can be performed by the fastening bolts 220.

The configuration shown and described above is merely a preferred embodiment based on the technical idea of the present invention. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

10: longitudinal girder 10 ': lateral beam
40: leakage preventing dam 23: longitudinal dam
24: Sponge 25: Tensile wire
26: liquid resin 30: body seat plate
50: Bracket 100: Orbit top plate body
110: Concrete part 120: Main beam
130: height adjusting bolt 200, 200 ': clamp
210: clamp body 220: fastening bolt
230: Relaxation prevention cap 300: Rail

Claims (6)

A main beam provided at a right angle to the extending direction of the rail and provided with a plurality of spaced apart portions and provided with a rail trough installation groove for installing a rail trough at a position where the rail is installed; A sub beam fixedly installed on both sides of the main beam at right angles; A concrete part installed on both sides of the main beam along a longitudinal direction of the rail and cured by placing concrete on both sides of the main beam by using a mold; And a rail installed on the concrete portion, the method comprising the steps of:
A first step of installing an outflow preventing dam on the upper surface of the longitudinal girder in the form of a fence;
A second step of placing the orbital upper plate main body in contact with the upper surface of the outflow preventing dam so as to be spaced apart from the upper surface of the longitudinal girder;
A third step of filling a liquid resin into the space provided by the longitudinal girder, the orbital upper plate body and the outflow preventing dam;
A fourth step of horizontally adjusting the height of front, rear, left, and right sides of the orbital upper plate main body;
A fifth step of fixing the orbital upper plate main body after the resin is cured;
Wherein the upper rail includes a lower rail and a lower rail.
The method according to claim 1,
In the fourth step, the upper end of the setting bolt is supported on the upper surface of the longitudinal girder by screwing the setting bolt vertically through the upper rail main body so that the orbital upper plate body is moved upward Of the upper rail (2).
The method according to claim 1,
The first step includes a longitudinal dam installation step of installing a linear longitudinal dam along the longitudinal direction of the flange on the upper surface of the flange of the I beam constituting the longitudinal girder,
Wherein the longitudinal dam installation step comprises:
Providing a longitudinal dam on each side of the flange along its longitudinal direction,
Tensioning both ends of a tension rod of a longitudinal dam in which the outer surface is surrounded by a sponge and a tension wire such as a wire or a wire is inserted into the inner surface and fixing both ends of the tension wire to the longitudinal girder;
And adhering and fixing a foam foam in the form of a wire in the horizontal direction of the upper surface of the flange.
The method according to claim 1,
A main beam provided at a right angle to the extending direction of the rail and provided with a plurality of spaced apart portions and provided with a rail trough installation groove for installing a rail trough at a position where the rail is installed; A sub beam fixedly installed on both sides of the main beam at right angles; A concrete part installed on both sides of the main beam along a longitudinal direction of the rail and cured by placing concrete on both sides of the main beam by using a mold; And a rail installed on the concrete part, the method comprising the steps of:
A first step of providing an outflow preventing dam in the form of a fence on the upper surface of the transverse beam;
A second step of placing the orbital upper plate main body in contact with the upper surface of the outflow preventing dam so as to be spaced apart from the upper surface of the lateral beam;
A third step of filling a liquid resin into the space provided by the lateral beam, the orbital upper plate body and the outflow preventing dam;
A fourth step of horizontally adjusting the height of front, rear, left, and right sides of the orbital upper plate main body;
A fifth step of fixing the orbital upper plate main body after the resin is cured;
Wherein the upper rail includes a lower rail and a lower rail.
5. The method of claim 4, wherein the first step comprises:
Is fixed to the upper surface of the transverse beam by welding, and both ends are bent so as to surround the transverse beam,

And fixing the outflow preventing dam to the bottom surface of the main body seating plate with an adhesive agent.
5. The method of claim 4,
Wherein the fixing device is a clamp.

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