KR100556219B1 - A method for changing plate-girder bridge of railway bridge into slab bridge by using temporary construction bents. - Google Patents

Abstract

The present invention relates to a method of slab replacement of the plate-shaped bridge of the railway bridge, in particular, the installation of the construction vents perpendicular to the railway at the same interval as the piers or alternating intervals to minimize the resistance according to the amount of water flow during construction to prevent construction In order to provide a bridge replacement method of good quality without the above, the above object is to replace the plate-shaped bridge in a conventional railway bridge with a slab bridge,

Installing a temporary vent in a direction perpendicular to the alternating and pier spacing of the bridge and perpendicular to the upper structure of the alternate and pier;

Installing the brackets into the alternating inner and front piers;

Installing a rail on an upper portion of the temporary frame by installing a rail on the upper horizontal frame; Removing the existing teaching device after installing the hydraulic jack in place of the existing teaching device;

Manufacturing a new slab and installing a new teaching device;

Removing the existing plate-shaped bridge and moving the new superstructure by placing it on a moving trolley installed on the horizontal frame; And new slab deposition and induction phase.

Railroad bridge, temporary construction, replacement method

Description

{A method for changing plate-girder bridge of railway bridge into slab bridge by using temporary construction bents.}

1 is a cross-sectional view of an installation state of a conventional ballless railway bridge.

2 is a cross-sectional view for explaining a repair method of a conventional induction fire railway bridge.

3 is a conventional maintenance process diagram.

4 is a perspective view showing the overall process of the present invention.

delete

Figure 5a is a front view of the installation state and the bracket installation except the base concrete placing and the upper horizontal frame.

Figure 5b is a front view of a state equipped with a mobile trolley equipped with an upper horizontal frame and a rail, and equipped with a copper bar and replacing the existing screw device with a hydraulic screw jack.

5C is a front view of a state of manufacturing a new slab and installing a new teaching device.

5D is a front view of a state in which an existing plate-shaped bridge is removed and a new slab is moved and replaced.

5E is a front view of a state in which the replacement is completed and induced induction;

5F is a side view of FIG. 5E.

Figure 6a is a front view showing the construction of the railway bridge of the up and down line from both sides in the present invention.

Figure 6b is a front view showing the construction of the railway bridge of the up and down line in the present invention in the present invention is a front view showing a state in which the upper horizontal frame to support the construction of both sides without the need for a bracket.

The present invention relates to a method for replacing the upper structure of the bridge due to the increase and aging of various loads, such as the running load of the vehicle, in particular, by installing a temporary vent on the axis, such as bridges or shifts, during the summer The present invention relates to a method of replacing an upper structure with good quality without any disruption in replacement construction by minimizing resistance according to the amount of water flowing through, and an induction burn method using the same.

First, the definition of the term "judo" refers to the condition where gravel is laid on rails and sleepers or girders that support them in railway bridges. A ballless phase refers to a state in which gravel is not laid in the above.

In general, in most railway bridges constructed in the past, most railway bridges that are not installed on the ground, such as more than 50% through rivers or valleys as steel bridges are installed on the ball as shown in FIG.

These ballistic railway bridges are structurally very vulnerable. Referring to FIG. 1, the pair of rails 100 installed in parallel in the longitudinal direction are supported by the sleepers 200 installed in the width direction at a predetermined interval, and the plate-shaped bridge 300 as the lower part of the sleepers. Is supported in the longitudinal direction, and the bridge device 400 is interposed at the upper position of the alternating or pier of the plate-shaped bridge.

However, in such a railway bridge, a very large dynamic load is applied as the vehicle proceeds.

Therefore, in this case, the sleeper girder and sleeper 200 of the rail (100) or plate-shaped bridge (300) in contact with the sleeper despite the inevitable use of a wooden sleeper in order to be absorbed some vibration tapping load The sleeper 200 swells as shown in the enlarged recess of FIG. 1 due to the continuous tapping load at the contact surface of the vehicle, and as the gap increases, driving noise of the vehicle is severely generated, causing discomfort to the train passengers. In recent years, structural safety enhancement and pole rail laying are absolutely required due to the speed increase due to the opening of high speed trains, and the ballless bridge is the weakest point in this regard.

As a result, if the repair is not performed, such as sleeper replacement, girder replacement, the rail 100 falls and there is a risk that the railway vehicle derails.

Therefore, the above method of sleeper replacement is only a temporary method, so induction fire construction is required to realize a more stable structure.

For this reason, a conventional substitution method for inductively converting a non-phased railroad bridge will be described with reference to Figs.

This is a method of placing slabs on existing plate-girder girders.

The conventional method will be described step by step with reference to FIGS. 2 and 3.

Giling working step to improve the adhesion with concrete by grinding the girder base surface of the plate-shaped bridge (300);

Drilling operation step of drilling a hole 310 for the reinforcement in the girder;

Reinforcing the reinforcing bars 610 through the perforated holes 310 and installing slab formwork 600;

A step of leveling the ground and removing obstacles under the pier, and supporting and installing the club support 700;

Pouring concrete (810) on the slab formwork (600);

Cutting the girder protrusion 320 exposed to the upper part of the slab 800 after demolding the support 700 and the die 600 after curing;

Waterproofing the slab; And

Completion of the induction phase on the slab (800) with gravel (900).

However, this conventional method has many problems as follows.

In other words, because the vehicle must be operated on the railroad during the slab casting and curing, it is an unreasonable way that problems in structural rigidity due to cracking and material separation of the slab can be caused, and the adhesion force between the girder and the concrete is reduced by the vibration caused by the vehicle operation. Phenomenon And as the railway vehicle runs during construction, the gravel, which has a relatively large mass compared to sand, cement, etc. in the concrete composition in the formwork is segregated to the bottom of the formwork due to the vibration load, and the phenomenon occurs that is concentrated under the cured slab. There is a crack in the slab that is cured by the volume expansion of the girder due to oxidation that accelerates corrosion of the girder due to the penetration of rainwater from the upper part of the existing girder cut out.

As can be seen from the above, in the conventional railway bridge induction system, the existing girders are reinforced in the state where the existing girders are buried, and the support is installed in the lower ground to install concrete, so that the existing girders continue to support and bear the dynamic load of the train even during curing. There is a problem that causes great damage to the slab bridge due to excessive impact.

In addition, the installation of formwork at the site for concrete placement of the slab and the plurality of supports thereof are not only difficult to support on the bottom of rivers, but also difficult to support. There is a problem in that it is necessary to avoid the summer when setting the air due to the problem that the water resistance is increased by affecting the amount of water flow and the support and installation is lost.

Therefore, there are many problems in the reconstruction of the concrete bridge including the existing girder, 10-2002-0045807 (name: Gabent using the steel patent of the patent application filed on August 5, 2002 by the applicant) The invention and method for inductive phase substitution by concrete bridge have been invented.

As a result, the construction has been greatly improved in comparison with the structure improvement method of the upper structure of the bridge including the existing girders by the conventional commanding work. However, this also has a problem in that it is difficult to predict the concentrated heavy rain, etc., because the construction vent hinders the flow of water in the river, thereby reducing the area of the water supply stage.

 Therefore, the present invention has been invented to solve the above problems, an object of the present invention, to provide a method for replacing the upper structure of the general bridge, including the railway bridge and induction burn while replacing the upper structure in the railway bridge Is in.

The accompanying drawings in the embodiment of the present invention shows the construction of replacing (substituting) the steel bridge of the railway bridge with the slab bridge, but not necessarily limited to this embodiment.

The purpose is to replace the superstructure of the bridge,

Installing a temporary vent in the direction perpendicular to the alternating and pier spacing of the bridge and perpendicular to the superstructure of the alternate and pier;

Installing the brackets into the alternating inner and front piers;

Installing a rail on an upper portion of the temporary frame by installing a rail on the upper horizontal frame;

Manufacturing a new superstructure;

Removing the existing superstructure and moving the new superstructure by placing it on a moving trolley installed on the horizontal frame; And

This is accomplished by consisting of a new slab stack and an induction phase.

And, in replacing the superstructure of the bridge with a small gap in at least one pair,

Installing a pair of hypothesis vents having the same spacing as the alternating and pier spacings of the bridge and corresponding to both sides in a direction perpendicular to the superstructure of the alternating and pier;

Installing a rail on the upper portion of the rail by installing a rail on an upper horizontal frame connected to the pair of temporary vents;                         

Manufacturing a new superstructure;

Removing the existing superstructure and moving the new superstructure by placing it on a moving trolley installed on the horizontal frame; And

By stacking new superstructures.

Dismantling the existing superstructure in the above, and moving the new superstructure by placing it on a moving cart installed on the horizontal frame;

After the installation of the hydraulic jack for replacing the existing chair in the previous stage, it is achieved by further including the step of removing the existing chair and the new chair.

And the temporary vent is achieved by being installed on the base concrete is installed on the bottom.

And the upper horizontal frame is installed on both sides of the alternating river and the front and rear of the temporary construction of the temporary vent is achieved by being supported by the bracket on the side of the alternating and piers with an extended length.

In addition, the installation of the hydraulic jack for replacing the existing stair device may be achieved by being supported on the upper horizontal frame of the temporary vent, and the upper horizontal frame supported by the bracket on the alternating and pier sides may be adjusted via the hydraulic jack. Is achieved by.

On the other hand, in induction conversion by replacing steel bridges of railway bridges with slab bridges,

Installing a temporary vent in the direction perpendicular to the alternating and pier spacing of the bridge and perpendicular to the superstructure of the alternate and pier;

Installing brackets in the inner side of the alternation and in front of and behind the piers, respectively;

Installing a rail on an upper portion of the temporary frame by installing a rail on an upper horizontal frame;

Manufacturing a new superstructure;

Conducting induction by blocking openings in both front and rear surfaces after curing of the upper structure;

Dismantling the existing superstructure and moving the induced upper superstructure onto a moving trolley installed on the horizontal frame; And

By stacking new superstructures.

And in the induction conversion by replacing the steel bridges of railway bridges with at least one pair having a small gap with slab bridges,

Installing a pair of hypothesis vents having the same spacing as the alternating and pier spacings of the bridge and corresponding to both sides in a direction perpendicular to the superstructure of the alternating and pier;

Installing a rail on the upper portion of the rail by installing a rail on an upper horizontal frame connected to the pair of temporary vents;

Manufacturing a new superstructure;

Conducting induction by blocking openings in both front and rear surfaces after curing of the new superstructure;

Removing the existing superstructure and moving the new superstructure by placing it on a moving trolley installed on the horizontal frame; And

By stacking new superstructures.

Hereinafter, the structure of the present invention and the method thereof will be described in detail with reference to the accompanying drawings.

4 of the drawings of the present invention is a perspective view showing the overall process of the present invention, Figures 5a, 5b, 5c, 5d, 5e and 5f is a flow chart showing the process of the present invention,

Figure 5a is a front view of the installation and bracket installation, except the base concrete placing and the upper horizontal frame, Figure 5b is replaced with a hydraulic screw jack and replacing the existing teaching device and the upper horizontal frame and rail installed with 5C is a front view of a state of manufacturing a new slab and installing a new stabilization device, and FIG. 5D is a front view of a state in which a new slab is removed and a new slab is moved and replaced. 5E is a front view of the state in which the replacement has been completed and induced induction, and FIG. 5F is a side view of FIG. 5E.

And Figure 6a is a front view showing the construction of the railway bridge of the up and down line from both sides in the present invention, Figure 6b is a front view showing the construction of the railway bridge of the up and down line from both sides in the present invention without the need for a bracket on the upper horizontal frame It is the front view which showed the state supported by both sides of the vent construction.

The present invention described with reference to the above drawings is not necessarily limited to the scope of the present invention to this drawing will be suitable for understanding the technical idea of the present invention.

In order to facilitate understanding of the direction in the present invention, the front and rear of the shift and the piers for the convenience of the road, and therefore the two sides with respect to the axis of the river flow.

In replacing the superstructure of the bridge,

Installing a temporary vent (20) in the direction perpendicular to the alternating (10A) and pier (10B) intervals of the bridge and perpendicular to the superstructure of the alternate and pier;

Installing brackets 30 respectively in the inner side of the alternation and in front of and behind the piers;

Installing a rail (R) on the upper horizontal frame (21) of the temporary vent (20) to install the moving cart (40) at the top;

New superstructure 50 manufacturing step;

Removing the existing upper structure and moving the new upper structure 50 by placing it on a moving trolley installed on the horizontal frame; And

The superstructure of the bridge is replaced by the step of loading the new superstructure 50.

And in replacing the superstructure of the bridge passing the up and down line of the railway in at least a pair as in Figure 6a and 6b,

Installing a pair of temporary vents (20A, 20B) having the same spacing as the alternating (10A) and pier (10B) intervals of the bridge and corresponding to both sides in a direction perpendicular to the upper structure of the alternating and pier;

Installing a rail (R ') on an upper horizontal frame (21F) connected to and extended with a pair of temporary vents to install a moving cart (40) thereon;

New superstructure 50 manufacturing step;

Removing the existing upper structure and moving the new upper structure 50 by placing it on a moving trolley installed on the horizontal frame; And

The superstructure of the bridge in the step of loading the new superstructure 50 is characterized in that the replacement.

Removing the existing upper structure and moving the new upper structure 50 in the above,

After the installation of the hydraulic jack (J) substitute for the existing teaching device in the previous step, characterized in that it comprises the step of removing the existing teaching device 400 and the new teaching device (60).

In the above, the temporary vents 20, 20A, 20B are characterized in that they are installed on the base concrete (10C) is installed on the bottom (see Figs. 6a and 6b).

In the above, the upper horizontal frame (21F) is installed in the upper side of both the inner side of the alternating (10A) of the temporary construction 20 and before and after the piers (10B) is supported by the bracket 30 on the alternating and piers side with an extended length (See FIG. 6B)

The installation of the hydraulic jack J instead of the existing chair is characterized in that the support is installed on the upper horizontal frame (21, 21F) of the temporary vents (20, 20A, 20B) (not shown).

In the shift and pier (10A, 10B) side, the upper horizontal frame supported on the bracket 30 is characterized in that the horizontal through the hydraulic jack (J) can be adjusted (see Figure 6a).

On the other hand, in induction conversion by replacing steel bridges of railway bridges with slab bridges,

Installing a temporary vent (20) in a direction perpendicular to an alternating (10A) and pier (10B) interval of the bridge and perpendicular to the upper structure (50) of the alternating and pier;

Installing brackets 30 respectively in the inner side of the alternation and in front of and behind the piers;

Installing a rail (R) on the upper horizontal frame (21) of the temporary tent to install the moving cart (40) at the top;

New superstructure 50 manufacturing step;

Conducting induction by blocking openings in both front and rear surfaces after curing of the new superstructure;

Dismantling the existing superstructure and moving the new superstructure 50, which is induced in phase, on a moving cart installed on the horizontal frame; And

It is characterized in that the induction phase by replacing the upper structure of the bridge in the step of loading the new upper structure (50).

On the other hand, in induction image replacement by replacing the steel bridges of railway bridges with at least one pair having a small gap with slab bridges

Installing a pair of temporary vents (20A, 20B) having the same spacing as the alternating (10A) and pier (10B) intervals of the bridge and corresponding to both sides in a direction perpendicular to the upper structure of the alternating and pier;

Installing a rail (R ') on an upper horizontal frame (21F) connected to and extended with a pair of temporary vents to install a moving cart (40) thereon;

New superstructure 50 manufacturing step;

Conducting induction by blocking openings in both front and rear surfaces after curing of the new superstructure;

Dismantling the existing upper structure (300), and moving the new upper structure (50) induced by placing it on a moving cart installed on the horizontal frame; And

It is characterized in that the induction phase by replacing the upper structure of the bridge in the step of loading the new upper structure (50).

In the above method of blocking the openings on both front and rear surfaces of the upper structure 50 will be constructed by various well-known forms, such as a temporary plate or by stacking sand bags.

The most important point in the present invention is to install the temporary vent 20 in the same direction as the flow of the river, that is, perpendicular to the railway rails at the same interval as the interval between the alternating and piers 10A, 10B. This minimizes the resistance of the water to the stream flowing to the bridge to secure the cross-sectional area, causing the installation facilities to float and be lost due to the rapid increase in flow rate, resulting in the irreparable situation of the bridge. This is a simple and groundbreaking idea that can improve the discontinuity of construction.

In the above, the base concrete 10C is placed on each straight line of the alternation and the piers 10A and 10B, as shown in FIG. 4, and is installed spaced apart from each alternation and the piers. The reason is that this concrete base, which is not demolished even after the replacement installation of the bridge, has an additional effect of preventing eddy currents from being generated at the bottom of the alternating and pier due to the flow rate, and the foundation thereof is dug. It can also be used as a basis for future re-installation of events for maintenance or other reasons.

Temporary vents 20 installed on the foundation concrete 10C are installed on the lower horizontal frame 23 supported in parallel on the plurality of jacks 22 for horizontal alignment at regular intervals and installed at regular intervals thereon. Assembled with a plurality of vertical frames 24 and reinforcing rods and braces 24 and 25 to reinforce them, the upper horizontal frame 21 is extended in the longitudinal direction and is mounted on top of the bracket (30). At this time, the hydraulic jack (J) is interposed between the bracket (30) and the upper horizontal frame (21) may be to act to level the entire horizontal.

On the other hand, the bracket 30 may be a concrete bracket to form a concrete bracket by embedding the anchor in the upper and rear sides of the alternating and piers, may be a steel bracket for binding and fixing the steel bracket to the anchor, and the shift And a temporary vent bracket in which temporary tents are placed on the front and rear sides of the pier, and disclosed in the applicant's patent No. 214387 (supporting device for raising the upper structure of the bridge and a method for repairing the bridge using the same). In the embodiment of the present invention to be used as a prefab bracket is described as an example of a prefab bracket.

A mobile trolley 40 having a copper portion 41 for loading the upper structure 50, which is a heavy object, and a roller 42 at the bottom thereof, and a moving means (not shown) may also be used in various embodiments. Substitution of the new superstructure 50 and the existing plate-shaped bridge 300 may also have a variety of embodiments is not limited to the drawings presented in the present invention.

In the above, the new chair apparatus 60 means a new chair apparatus except for the existing chair apparatus 400, and any existing chair apparatus may be used.

In the embodiment of the present invention, the present invention is performed by the device of the applicant of Patent No. 403158 or the device of the same structure.

In the step of installing the bracket in front of the alternating river side and the piers in the bracket 30 may be a concrete bracket to form a concrete bracket by embedding the anchor in the front and rear sides of the alternating (10A) and piers (10B) ,

It can also be a steel bracket for fixing and fixing the steel bracket to this anchor,

In addition, it is also possible to use a temporary vent bracket in which the temporary vents are placed on the front and rear sides of the shifts and piers,

It can be used as a prefabricated bracket described as a supporting iron in the applicant's patent No. 214387 in the embodiment of the present invention is carried out as an example of a prefabricated bracket.

In addition, the moving cart, which is a means for moving the new superstructure, may also be applied to various embodiments, but is not limited to the drawings presented in the present invention.

Filling the slabs with gravel and inducing the sleepers and the rails in the above may shorten the air in advance before the movement of the new slab.

And the step of dismantling the girder, sleepers and rails of the existing plate-shaped bridge can be cut to the unit length to drop to the bottom or lifted by a crane. Of course, the present invention may be achieved by the present patent-applied method or various well-known embodiments of the present invention, such as it may be achieved by seating on a trolley which is a girder-substituted moving means installed on a gas and moving out. It is in the technical category.

On the other hand, in the present invention, when the space for installing the hydraulic jack (J) on the shift or the top of the pier due to the existing bridge device does not come out, the hydraulic jack (J) may be installed as a support point on the upper horizontal frame (21) Will belong to the technical category.

The new upper structure 50 which is placed on the mobile trolley 40 while the existing bridge plate 300 is released is entered by a pair of mobile trolleys 40 positioned parallel to each other.

For reference, the moving means of the moving cart can be variously implemented. For example, the moving cart 40 is not shown on the rail R installed in the upper horizontal frame 21 of the temporary vent 20. As the hydraulic jack device fixed by the clamp is loaded, the roller 42 of the movable cart 40 is moved by a repeating operation of moving the movable truck 40, releasing the clamp, unloading the clamp, and loading the clamp again. The movement is carried out by (R).

That is, the method of seating by moving the new upper structure 50 which does not induce phase induction or moving to the moving cart 40 will be described with reference to FIGS. 5D and 5E. The lowest surface of the upper structure 50 is the hydraulic jack J. After loading the hydraulic jack (J) to support the slab (50) of the alternating and pier of the mobile truck 40 and the height of the new bridge device (60) laid higher than), the mobile truck As the 40 is removed and the unloading hydraulic jack J supporting the upper structure 50 is completed, the new upper structure 50 is settled in the new teaching device 60 and completed.

In the above example, the existing plate-shaped bridge 300 may fill the gravel in advance and move the sleepers and the rails before the movement of the new upper structure 50 in a state in which the operation of the train is allowed.

And the step of dismantling the girder, sleepers and rails of the existing plate-shaped bridge can be cut to the unit length to drop to the bottom or lifted by a crane. Of course, the present invention can be achieved by the present patent-applied method or various exemplary embodiments of the present invention, such as it may be achieved by restoring by moving to a trolley which is a girder-substituted moving means installed on a temporary vent. Will be in category.

On the other hand, the hypothesis also belongs to the technical scope of the present invention also by the method of moving the hypothesis itself, which is the applicant's previously filed manner.

The present invention constituted and operated as described above is installed in a straight line with respect to the direction of alternating bridges and the direction of water flowing through the bridges and rivers, so that the cross-sectional area of the passage does not decrease even in the rainy season with heavy rainfall, and thus due to the pressure caused by the quantity of water and the floatings, etc. It has the function of protector to prevent hitting on the pier, thereby maintaining the safety of the bridge.

In addition, the superstructure is manufactured on the temporary construction or the prefabricated structure is pre-fabricated in the factory, and the concrete slab, which is the superstructure, is quickly and correctly installed in the fixed position by moving the self-propelled trolley or replacing the girder on the stationary gas. It is possible to replace without stopping time, the workability and quality is good, there is an effect that can be stable construction.

In addition, by leaving the base concrete as it is after the completion of the construction according to the present invention there is an effect of preventing the structural defects due to the shift of the bridge and the bridge pier due to the groove cavitation phenomenon caused by the flow of the river at the bottom of the existing shift and pier have.

Claims (9)

In replacing the superstructure of the bridge, Installing a temporary vent (20) in the direction perpendicular to the alternating (10A) and pier (10B) intervals of the bridge and perpendicular to the superstructure of the alternate and pier; Installing brackets 30 respectively in the inner side of the alternation and in front of and behind the piers; Installing a rail on the upper horizontal frame 21 of the temporary tent and installing a moving cart 40 thereon; New superstructure 50 manufacturing step; Removing the existing superstructure and moving the new superstructure; And Method of replacing the superstructure of the bridge, characterized in that for loading the new superstructure. In replacing the superstructures of bridges with small gaps in at least one pair, Installing a pair of temporary vents (20A, 20B) having the same spacing as the alternating (10A) and pier (10B) intervals of the bridge and corresponding to both sides in a direction perpendicular to the upper structure of the alternating and pier; Installing a rail (R ') on an upper horizontal frame (21F) connected to and extended with a pair of temporary vents to install a moving cart (40) thereon; Manufacturing a new superstructure; Removing the existing superstructure and moving the new superstructure by placing it on a moving trolley installed on the horizontal frame; And Method of replacing the superstructure of the bridge, characterized in that for loading the new superstructure. The method of claim 1 or 2, wherein the step of removing the existing superstructure and moving the new superstructure, Method of replacing the superstructure of the bridge, characterized in that after the installation of the hydraulic jack for replacing the existing bridge device in the previous step, the existing bridge device removal and the installation of a new bridge device. The method of claim 1 or 2, wherein the temporary vent is installed on the base concrete is installed on the bottom. The method according to claim 1, wherein the upper horizontal frame installed on both sides of the alternating rivers and before and after the bridge is supported by a bracket on the alternating and pier sides with an extended length. 4. The method of replacing a superstructure of a bridge according to claim 3, wherein the installation of a hydraulic jack for replacing the existing bridge device is made to be supported on the upper horizontal frame of the temporary vent. 4. The method of claim 3, wherein the upper horizontal frame supported by the brackets on the alternating and pier sides can adjust their horizontality through a hydraulic jack. In converting steel bridges of railway bridges into slab bridges, Installing a temporary vent (20) in the direction perpendicular to the alternating (10A) and pier (10B) intervals of the bridge and perpendicular to the superstructure of the alternate and pier; Installing brackets 30 respectively in the inner side of the alternation and in front of and behind the piers; Installing a rail on an upper portion of the temporary frame by installing a rail on an upper horizontal frame; Manufacturing a new superstructure; Conducting induction by blocking openings in both front and rear surfaces after curing of the upper structure; Dismantling the existing superstructure and moving the induced upper superstructure onto a moving trolley installed on the horizontal frame; And The method of induction image replacement by replacing the superstructure of the bridge, characterized in that for loading the new superstructure. In induction burning by replacing steel bridges of railway bridges with at least one pair with a small gap, Installing a pair of temporary vents (20A, 20B) having gaps (10A) and (10B) of bridges and corresponding to both sides in a direction perpendicular to the superstructures of the bridges and bridges; Installing a rail (R ') on an upper horizontal frame (21F) connected to and extended with a pair of temporary vents to install a moving cart (40) thereon; New superstructure 50 manufacturing step; Induction imaging the openings on both sides of the front and rear surfaces after curing of the superstructure; Removing the existing superstructure and moving the new superstructure; And The method of induction image replacement by replacing the superstructure of the bridge, characterized in that for loading the new superstructure.

Images