KR200377361Y1 - Reinforced rail type expansion joint - Google Patents

Abstract

The present invention relates to a rail-type expansion joint with a reinforcement, and more particularly, the upper portion of the wire mesh structure consisting of a vertical reinforcement 33 and a horizontal reinforcement 34 on the control box 25 of the rail-type expansion joint The loop-type lower reinforcement 32 is welded and fixed to the lower reinforcement 31 and the control box 25. The present invention reduces the cracks generated in the construction site of the expansion joint device, thereby providing an effect that can save the cost of repair and maintenance.

Description

Rail type expansion joint with reinforcement {REINFORCED RAIL TYPE EXPANSION JOINT}

The present invention relates to a rail-type expansion joint device provided with a reinforcing material, and more particularly, is provided between the upper structure of the bridge is provided with a reinforcing material to ensure the smooth running of the vehicle by accommodating the movement and rotation of the bridge To a rail-type expansion joint device.

Expansion joint device accommodates the behavior of bridge upper structure by temperature extension, creep, dry shrinkage, live load, etc. to secure the smooth running and discontinuity of the vehicle, and further promote the functionality and structural stability of the bridge. As the device, there are typically a rail joint, a monocell joint, a finger joint, and the like.

In particular, the rail type expansion joint has a large allowable expansion amount, durability and watertightness is large, and is used as a new expansion joint of the bridge by maintaining its function and capacity even with a continuous increase in vehicle load.

1 is a perspective view showing a rail-type expansion joint according to the prior art, as shown, the rail-type expansion joint is coupled to the end of the upper structure (10) and the shield 21, the sealing member 23 Control box for providing a space for applying the center beam 22 and the support 24 and the support 24 arranged at predetermined intervals under the load under the center beam 22 connected between the guard beam 21 It is comprised including 25.

However, the conventional rail-type expansion joint device as described above has a problem that cracks occur frequently in the direction of the bridge in the construction site contacting the expansion joint device by the concrete drying shrinkage of the upper structure after a certain period of time after construction.

In particular, in the case of rail type expansion joints having an allowable extension amount of 160 mm or more, cracks are generated at many sites after construction of expansion joints due to weak adhesion to concrete on the control box 25, resulting in repair costs exceeding the construction cost. There was a problem.

The present invention was devised to solve the problems in view of the above-described problems of the prior art, by combining a reinforcing material to strengthen the upper structure and the attachment force to the conventional rail-type expansion joint, cracks around the expansion joint The purpose is to reduce the cost of site maintenance and repair and to provide more reliable expansion joints.

In order to achieve the above object, the present invention has a cap beam coupled to the end of the upper structure, a central beam connecting between the guard beam as a sealing member, a plurality of supports are arranged at predetermined intervals under the load of the central beam, In the rail-type expansion joint device consisting of a control box provided a space for applying each support,

Reinforcement consisting of a steel wire is fixed by the coupling means to enhance the adhesive force with the upper structure around the control box.

Hereinafter, a preferred embodiment according to the present invention will be described in more detail based on the accompanying drawings.

Figure 2 is a plan perspective view showing an embodiment according to the present invention, as shown, the present invention is a reinforcement material 30 to provide tension to the upper and lower surfaces of the control box 25 coupled with the lamp beam 21 There is a feature that is combined. Let's take a closer look at this.

First, the control box 25 is for applying a support 24 (shown in FIG. 1) under a load in the lower portion of the central beam 22, and has a box-shaped space provided with a predetermined space for the support 24 to be installed. It is configured and coupled to the side of the sabot 21. Fixing studs 26 are coupled to both side and bottom surfaces of the control box 25.

In addition, a plurality of curved beam reinforcing supporters 27 are arranged at a predetermined interval on the side of the guard beam 21.

Next, referring to the upper reinforcement material 31 fixedly disposed on the upper surface of the control box, as shown, the upper reinforcement material of the grid type of steel wire is fixed to the upper surface of the control box 25. Looking in more detail, the upper stiffener 31 is a plurality of vertical stiffeners 33 perpendicularly intersecting the guard beam 21 and a plurality of horizontal stiffeners disposed in the longitudinal direction of the guard beam 21 on the vertical stiffener 33 ( 34).

The vertical reinforcement 33 is welded and fixed to the upper surface of the control box 25 at a predetermined interval, the horizontal reinforcement 34 is disposed perpendicular to the vertical reinforcement 33 and welded to each other, horizontal reinforcement member 34 The end of the) is preferably bent downwardly welded to the beam reinforcing support 27 coupled to the side of the guard beam 21.

In addition, the upper reinforcing material 31 composed of iron wire is preferably composed of reinforcing bars generally used, but is not limited thereto and may be changed to various materials. In addition, the structure of the upper reinforcing material 31 is preferably configured in a lattice shape as described above, but is not limited thereto. The vertical reinforcing material 33 and the horizontal reinforcing material 34 may be changed at various angles. Thus, the upper stiffener 31 may be anything as long as it is in the shape of a wire mesh structure. In addition, the thickness, number and spacing of the wire can be appropriately adjusted according to the degree of adhesion to the upper structure.

Next, the lower reinforcing material 32 coupled to the lower portion of the contro box 25 will be described with reference to FIG. 3.

3 is a bottom perspective view showing an embodiment according to the present invention, as shown in the lower reinforcing material 32 is made of a steel wire as the upper reinforcing material 31, the structure is different from the upper reinforcing material (31) 21) and consists of a long loop extending in the longitudinal direction. The lower reinforcing material 32 may be directly welded to the lower surface of the control box 25, or welded to the fixed stud 26 formed on the lower surface so as to be spaced apart from the lower surface by a predetermined distance, both sides of the beam reinforcing support It is to be inclined as shown in Figure 3 to be welded to (27).

In addition, the lower reinforcing material 32 is not necessarily configured in a loop type, it can be configured to be welded and fixed to the beam reinforcing support 27 by placing a plurality of iron wire in the longitudinal direction of the beam 21, the upper reinforcing material ( It may be composed of a wire mesh structure as shown in (31). In addition, the lower reinforcing material 32 is preferably used as the reinforcing bar as the upper reinforcing material 31, the diameter of the reinforcing bar may be changed.

Looking at the manufacturing process of the rail-type expansion joint device provided with the reinforcing material 30 as described above, first, by fixing the welded to the bottom surface of the control box 25, the lower reinforcing material 32 processed in a loop type rail joint expansion joint Leave the device. Next, in the construction site where the expansion joint device is installed, the reinforcing bars in a grid shape on the top of the control box 25 and then fixed each of the welding. It is preferable to use high strength steel electrodes (KS D 7006) as welding rods for field welding. In addition, it is possible to facilitate the welding operation by using a plate during the construction of the grid-shaped upper reinforcement (31).

In the above, the present invention has been shown and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiments, and those skilled in the art to which the present invention pertains may vary without departing from the spirit of the technical idea of the present invention described in the claims below. It will be possible to carry out the change.

As described in detail above, the present invention provides a tension to the control box by connecting the reinforcement to the expansion joint device, thereby strengthening the adhesion to the upper structure to prevent the cracks often occur in the construction site of the expansion joint device, It gives economicality to expansion joints by providing reliability for joints and saving the cost of repairing and managing cracks.

1 is a perspective view showing a rail-type expansion joint according to the prior art,

Figure 2 is a plan perspective view showing an embodiment according to the present invention,

Figure 3 is a bottom perspective view showing an embodiment according to the present invention.

Explanation of symbols on the main parts of the drawings

10: upper structure 21: Godbap

22: center beam 23: sealing member

24: support 25: control box

26: fixed stud 27: beam reinforcement support

30: reinforcing material 31: upper reinforcing material

32: lower reinforcement

Claims (4)

The head beam 21 coupled to the end of the upper structure 10, the center beam 22 connecting between the guard beam 21 by the sealing member 23, and the lower portion of the center beam 22 under a predetermined interval In the rail-type expansion joint device consisting of a plurality of supports 24 arranged in the control box 25 provided with a space for applying each support 24, Rail type expansion joint device around the control box 25, characterized in that the reinforcing member (30) consisting of a steel wire is fixed by the coupling means to strengthen the attachment force with the upper structure (10). The method of claim 1, wherein the reinforcing material 30, Is disposed on the upper surface of the control box 25, by providing a tension on the upper portion of the control box 25, and the upper reinforcing material 31 to closely bond the upper and upper structure 10 of the control box 25 and ; A lower reinforcement 32 disposed on the lower surface of the control box 25 to provide tension to the lower portion of the control box 25 so as to closely bond the lower and upper structures 10 of the control box 25 to each other; Rail type expansion joint characterized in that consisting of. The method of claim 2, The upper reinforcing material 31 is composed of a grid consisting of a vertical reinforcing material 33 and a horizontal reinforcing material 34, The lower reinforcing material 32 is a rail-type expansion joint device characterized in that the loop. The method according to any one of claims 1 to 3, The coupling means is a rail-type expansion joint characterized in that the use of welding.