KR20070027162A - Truss bridge lifting apparatus for maintenance and method thereof - Google Patents

Abstract

A reinforcing supporting structure and a method for repairing and replacing a truss bridge are provided to smoothly secure the vehicle traveling while repairing and replacing by preventing the lower member of the truss from being damaged. A lifting apparatus for repairing and replacing a truss bridge comprises plural lower reinforcements(10) combined at the lower side of a truss(3) to stably support the lower part of the truss supported by a shoe apparatus(2) on the upper surface of a pier(1), to lift the truss, and to repair and replace the shoe apparatus, horizontally symmetrical on an upper member(6) at the edges of the upper member and a lower member(7) toward the lower side of the truss, and combined to keep a predetermined slope angle; and a lifting unit(20) mounted at the lower side of the lower member to lift each device of the truss with a predetermined height when repairing and replacing the shoe apparatus. A hydraulic jack(21) is installed on the bracket fixed at the edge of the pier.

Description

Truss bridge lifting apparatus for maintenance and method

Figures 1a and 1b is a view showing the installation state of the lower reinforcement and the lifting means applied to the lifting device for replacing the truss bridge according to the present invention, Figure 1a is a side view of the bridge of the continuous beam section, Figure 1b Side view of the bridge of the simple beam section.

Figure 2 is a front view of the bridge showing the installation state of the lower reinforcement is applied to the lifting device for replacing the truss bridge according to the present invention.

Figure 3 is a flow chart showing a sequential process of the pulling method for repair replacement of the truss bridge according to the present invention.

<Description of Symbols for Major Parts of Drawings>

One ; Pier 2; Device

3; Truss 4; sleeper

5; Rail 10; Hahyeon Reinforcement

11; Stock 12; Splice Plate

13; Bolt 14; Truss internal reinforcement

20; Raising means 21; Hydraulic Jack

22; Bracket

The present invention relates to a lifting device for repair and replacement of truss bridges, and more particularly, to more stable reinforcement for the position to raise the upper truss when repairing and replacing the old bridge device is made, such as trains or vehicles during repair replacement construction The present invention relates to an apparatus for repairing and replacing a truss bridge that can securely support and raise an upper truss while ensuring smooth operation of the truss bridge.

Roads and railways are used as the main transportation route for large-scale logistics movement and smooth human transportation as a national transport network, and due to the terrain characteristics of our country, which has a lot of mountains and rivers, we build tunnels and bridges, Frequent crossings are common. In particular, the construction of a long bridge is essential to the passage of roads and railways through large rivers, and the truss bridge has been mainly constructed as a technical bridge structure. Most of these domestic truss bridges are one of the main facilities that are directly maintained by the country, and most of them were constructed in the 1910 ~ 1960s, and since then, the facilities themselves are considerably old.

Moreover, the railway truss bridge is very difficult to block or slow down due to the characteristics of our country, which has to cross the large rivers and the rail traffic is paralyzed when the operation of the bridge is restricted, for example, the Han River Railway Bridge is a good example. The Han River Railway is a bridge that enters Seoul with the highest number of rail operations in Korea. When the train is blocked, it immediately causes paralysis of railroad traffic nationwide.

Therefore, there is a strong need to prepare appropriate and reliable repair and reinforcement measures for the safe operation of railways as well as to prepare measures for the aging of truss bridges in Korea.

In general, the truss bridge, the upper structure consisting of the truss, the lower structure such as bridges and shifts for supporting it, and connecting the upper structure and the lower structure to properly distribute the load of the heavy upper structure to the lower structure Consisting device for performing a smooth stretching support function so that it can be delivered to, and the upper and lower structures are possible to repair and reinforcement during train operation.

However, in performing the repair and replacement work for the chair apparatus, it is only safe to carry out the repair and replacement work in the state of blocking the train operation since only the state of raising the truss of the upper structure is possible. As described above, since it causes paralysis of railway traffic, it is necessary to safely perform repair and replacement of bridges while maintaining train operation. However, there is no suitable method for repairing and repairing bridges until now.

In addition, the rail truss bridge of our country is a gravel-free ballless bridge, and the height of the rail does not change sensitively even if the upper truss is raised a little, and the long span truss is long, so its own load and train load are overloaded. In view of the above, there was a difficulty in that the repair and replacement work of the above-described apparatus must be made.

In addition, the railway truss bridge may cause severe lateral vibration of the bridge due to the meandering movement of the train during operation of the train, and especially when the upper truss is raised to repair and replace the damaged bridge device, Since the upper truss is temporarily supported only by the hydraulic jack for bridge raising while being converted to the free end, stable supporting means of the upper truss is necessary for safer train operation in such a state. There was no.

The present invention has been made to solve the above-mentioned problems, the object of the present invention is to provide a more stable structural reinforcement at the position to raise the upper truss during maintenance and replacement of the old truss bridge bridge device, the truss lower current It can prevent the damage caused by the refraction, can safely transfer the vertical load on the truss phase current, and can securely support and raise the upper truss while ensuring the smooth operation of trains or vehicles during maintenance replacement. The present invention provides a pulling apparatus for repairing and replacing a truss bridge.

The lifting device for repair replacement of the truss bridge according to the present invention for achieving the above object, while reinforcing so that the lower portion of the truss supported by the bridge device installed on the upper surface of the bridge can be stably supported. It is coupled to the lower part of the truss to raise the truss to be repaired and replaced, the predetermined angle of inclination in the form of being symmetrical about the upper chord at the corner of the upper chord and lower chord of the lower truss Impressions that are installed at the bottom of the lower chord lower portion of each lower reinforcement and each lower reinforcement is fastened and fixed at each corresponding position to raise each place of the truss by the appropriate height when repairing and replacing the bridge device Characterized in that it comprises a means.

Here, the pulling means is preferably made of a hydraulic jack installed on the bracket fixed to the corner portion of the piers.

In addition, the pulling means may be made of a hydraulic jack located on a temporary vent installed in the vicinity of the pier.

On the other hand, the lifting method for repair replacement of the truss bridge according to the present invention for achieving the above object, the truss inner reinforcement means is provided in the open section of the upper and lower chorus of the position adjacent to the bridge device on the lower side of the truss Placing the fastening plate as a bowl at a position where the truss inner reinforcing means is installed on each of the upper chord and the lower chord, respectively, and placing the upper chord between each fastening plate installed at the upper chord and the lower chord. Installing a plurality of lower back reinforcement materials at predetermined inclination angles so as to be symmetrical with respect to the center; Characterized in that it comprises a step to raise.

Hereinafter, an apparatus for pulling up and replacing a truss bridge according to a preferred embodiment of the present invention and a bridge pulling method using the same will be described in detail with reference to the accompanying drawings. The present invention is a more suitable structure of the truss bridge, in particular the railway truss bridge, the following detailed description will be described by illustrating the railway truss bridge.

1 to 3 are for explaining the structure and the lifting method of the lifting device for replacement of the railway truss bridge according to the present invention. That is, Figures 1a and 1b is a view showing the installation state of the lower reinforcement 10 and the pulling means 20 is applied to the lifting device for replacement of the railway truss bridge according to the present invention, Figure 1a The side view of the bridge, Figure 1b is a side view of the bridge of the simple beam section, Figure 2 is a bridge showing the installation state of the lower reinforcement 10 applied to the lifting device for replacement of the truss bridge according to the present invention 3 is a flowchart showing a pulling method for repair replacement of the truss bridge according to the present invention for each sequential process.

The structure of the railway truss bridge according to the present invention, as shown in the structure of the general truss bridge shown in Figure 1a (example of continuous beam section) and Figure 1b (example of simple beam section) and Figure 2, truss (3) Consisting of the upper structure and the lower structure, such as the pier (1) for supporting it, and connecting the upper structure and the lower structure smoothly support the elastic support so that the load of the heavy upper structure can be properly distributed and transferred to the lower structure. Consisting device 2 for performing, the sleeper (4) is installed on the inner bottom surface of the truss (3), the rail 5 is formed on the upper structure.

The lifting device for repair replacement according to the present invention applied to such a truss bridge, the lower portion of the truss (3) to transfer the load to the upper chord of the truss (3) when the bridge is raised to prevent buckling or damage of the lower chord Reinforcing and including the lifting means 20 that can lift it, including the yarn 11, the fastening plate 12 and the bolt 13, the lower reinforcement (10); It has a structure in which the pulling means 20 including the hydraulic jack 21 and the bracket 22 is coupled.

That is, the lifting device for repair replacement according to the present invention reinforces so that the lower part of the truss 3 supported by the bridge device 2 installed on the upper surface of the bridge 1 can be stably supported and the bridge device. Coupled to the lower part of the truss 3 to raise the truss 3 to repair and replace (2), the upper chord (6) and lower chord (7) of the lower side of the truss (3) A plurality of lower back stiffeners 10 and a lower side of each lower back stiffener 10 which maintain a predetermined angle of inclination in the form of left and right symmetry about the upper chord 6 at the corners of the upper and lower ends of the lower back stiffener 10, respectively. It is installed in the lower portion of the lower current comprises a pulling means 20 for lifting each part of the truss (3) by the appropriate height by the control of a control device (not shown) during the repair and replacement of the bridge device (2); It is a structure.

At this time, the inclination angle for installing the yarn 11 of the lower reinforcement 20 is to be maintained 45 to 60 ° with respect to the horizontal plane, the lifting means 20 may be applied to the screw type hydraulic jack 21, When the pulling means 20 is installed on the bracket 22 fixed to the corner portion of the pier 1 according to the embodiment, when directly installed on the upper portion of the pier 1 and the pier separately from the pier 1 The case may be installed on a temporary vent (not shown) installed in the vicinity of 1).

Referring to the bridge lifting method using the lifting device for replacing the truss bridge according to the present invention constituting the structure as described above based on the flowchart of Figure 3 as follows.

First, the truss internal reinforcement means 14 is installed in the open end surface openings of the upper chord 6 and the lower chord 7 at a position adjacent to the pedestal device 2 at the lower side of the truss 3 so that the yarn 11 is provided. Make sure it is firmly supported. In FIG. 1A, as a truss inner reinforcing means 14 is provided with a supporting iron plate, a plurality of supporting iron plates are installed in the opening of the upper chord 6 in a state spaced side by side at regular intervals. A structure in which a plurality of supporting iron plates are stacked in an opening is shown. 1B shows a case where a hydraulic screw jack is provided as the truss internal reinforcing means 14, and a screw jack may be used as the truss internal reinforcing means 14.

Subsequently, the plurality of fastening plates 12 are padded at positions where the supporting iron plate is installed, and a plurality of holes are drilled to fasten the bolts 13 to each of the bolts 13. ) To fasten the fastening plate 12 to each other.

As described above, after the plurality of fastening plates 12 are respectively installed at the corresponding positions, the plurality of yarns 11 are symmetrical with respect to the upper chord 6 between the respective fastening plates 12 within the range of the inclination angle. Each will be installed by.

As described above, when the lower reinforcement member 10 is installed, and the maintenance and replacement of the teaching apparatus 3 is required, the hydraulic jack 21 installed at the lower end of the lower side of each yarn 11 is controlled. The following operation may be performed in a state in which the truss 3 is raised by an appropriate height by driving under the control of.

According to the present invention as described above, the apparatus for raising and replacing the truss bridge according to the present invention, the truss by a more stable structural reinforcement at the position to raise the upper truss during maintenance and replacement of the old truss bridge bridge device It can prevent the damage caused by the deflection of the lower chord, transfer the vertical load at the time of lifting to the truss top chord safely, and secure the operation of trains or vehicles even during the replacement and replacement construction. It is effective in ensuring the operating profit of the operating institution as much as possible.

Although the present invention has been described with reference to the embodiments shown in the accompanying drawings, this may be regarded as exemplary, and a person of ordinary skill in the art may conceive various modifications and equivalent embodiments therefrom. It should be understood that such equivalent embodiments are also included within the claims of the present invention. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

Claims (4)

It is coupled to the lower part of the truss to raise the truss so as to reinforce the lower portion of the truss supported by the device installed on the upper surface of the pier to be stably supported, and to repair and replace the device. A plurality of lower stiffeners are fixed to each corresponding position while maintaining a predetermined angle of inclination in the form of the left and right symmetry around the upper chord and lower chord of the truss lower side, and the lower end of each lower stiffener It is installed on the lower side of the lower chord, the lifting device for repair replacement of the truss bridge, characterized in that it comprises a lifting means for lifting the respective parts of the truss by the appropriate height during repair and replacement of the bridge device. The method of claim 1, The pulling means, the lifting device for replacing the truss bridge, characterized in that consisting of a hydraulic jack installed on the bracket fixed to the corner of the pier. The method of claim 1, The pulling means, the lifting device for replacing the truss bridge, characterized in that consisting of a hydraulic jack located on the temporary vent installed in the vicinity of the pier. Installing internal truss reinforcement means in the open end portions of the upper chord and the lower chord at positions adjacent to the pedestal device at the bottom of the truss; Placing a fastening plate as a bowl at a position where the truss inner reinforcement means is installed on each of the upper chord and the lower chord; Installing a plurality of lower reinforcement yarns at predetermined inclination angles so as to be symmetrical with respect to the upper chords between the respective fastening plates installed at the upper chords and the lower chords; And Raising the truss bridge for the maintenance and replacement of the bridge device to drive the lifting means installed on the lower side of the lower side of each yarn to raise the truss by a suitable height; Way.

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