KR100837212B1 - Reinforcing apparatus for both edge parts of tunnel - Google Patents

Abstract

An apparatus for reinforcing two ends of a tunnel is provided to reinforce a bell mouth part and to support pressure transmitted from side parts of the tunnel by installing a plurality of H-shaped reinforcing members at two ends of the tunnel. An apparatus for reinforcing two ends of a tunnel comprises a plurality of reinforcing members(10), and a fixing member. The H-shaped reinforcing members are inclined from the ground and bent around two ends of the tunnel with the same curvature as the tunnel. The reinforcing member is inserted to the concrete filled between the corrugation plate of the tunnel and the reinforcing plate. The fixing unit fixes the plural reinforcing member at a base retaining wall located at a lower part of the tunnel. The fixing unit has a reinforcing block(21) and a reinforcing plate(22). The concrete reinforcing block is fixed to the base retaining wall. The reinforcing plate has a corrugation plate which is inserted to the concrete reinforcing block and faced to a corrugation plate that is located at two ends of the tunnel.

Description

Reinforcement device at both ends of tunnel {REINFORCING APPARATUS FOR BOTH EDGE PARTS OF TUNNEL}

The present invention relates to a tunnel to be excavated, such as a road, and more particularly to a reinforcing device for reinforcing both ends of the tunnel installed at the entrance or exit side entrance to the vehicle in the tunnel construction.

In general, construction of new highways, national highways, railways, etc. often pass through mountainous areas as well as flat areas, and especially in mountainous areas, tunnels are not cut off due to natural environmental problems or construction costs. Excavations often open roads.

Tunnels to be excavated are constructed by shotcrete on the rock wall of the tunnel excavated by blasting, embedding rock bolts, waterproofing the surface of the shotcrete, and placing lining concrete layer to complete the tunnel construction.

In recent years, tunnels are often constructed using corrugated steel sheet in consideration of ease of construction and economical efficiency. Corrugated steel sheet is to increase the shape strength by forming the bending of the waveform on the metal plate, has the advantage of easy use and low manufacturing cost than other concrete products. Therefore, as well as the general arch structure, it is also used as a semi-circular structure, such as the dike channel or the support of the tunnel.

On the other hand, the entrance of the tunnel, as shown in Figure 1, minimizes the pressure of the driver feels when the vehicle enters the tunnel on the road, prevents pressure and vibration due to wind pressure at the time of entry and exit of the tunnel, and unexpected conditions such as heavy rain In order to prevent accidents that can occur due to the collapse of the upper slope of the tunnel entrance in the tunnel or on the road, it is configured to form a cylindrical cut slope called bellmouthed.

When the structure is installed in the tunnel using the corrugated steel sheet described above, the corrugated steel sheets of a predetermined length, which are mass-produced in the factory, are arranged to overlap the edges of adjacent corrugated steel sheets to be fixed to each other using fasteners such as bolts.

In the case of such a bell-mouth tunnel, as shown in Fig. 2, the foundation retaining wall formwork is installed in the lower part of the tunnel, the anchor 2 is fixed to the retaining wall reinforcement, and concrete is injected therein to harden the upper part of the foundation retaining wall. Insert the base channel (3) into the fastener provided in the tightening and fastening to the anchor, and then the corrugated steel plate (4) installed on the excavation surface of the tunnel to the base channel by bolt and nut coupling at the bottom of the corrugated steel sheet Tighten. Then, backfill the top of the tunnel and compact to complete the tunnel construction.

However, in the bell mouse type tunnel construction according to the prior art, since the bell mouse part is formed by inclining the entrance and exit ports at both ends of the tunnel, the bell mouse part is formed to be inclined to transfer the load of the corrugated steel plate itself as compared with the intermediate part formed in the semicircular shape. The load-bearing capacity is weak, and only the base retaining wall is supported by joining with the base channel, which is very weak. In particular, there was a problem that the corrugated steel plate of the bell mouse part is easily deformed due to the side pressure that may occur due to the load or compaction of the compaction equipment during the tunnel construction.

The present invention is to solve the above-mentioned problems of the prior art, an object of the present invention, by using a H-shaped steel by simply reinforcing the bell mouse portion can support the side pressure acting during compaction equipment or compaction and after compaction It is to provide a reinforcing device at both ends of the tunnel.

In addition, another object of the present invention is to provide a tunnel-end reinforcement device that can easily install the H-shaped steel as a reinforcement to be reinforced in the bell mouse portion without any fixed member or formwork.

In addition, another object of the present invention is to provide a tunnel end portion reinforcement device that can be applied to the bell mouse portion of the tunnel that is already installed using the H-beam, as well as the bell mouse portion being installed.

By reinforcing device according to the present invention to support the lateral pressure by reinforcing the bell mouse parts to be installed at both ends of the tunnel, at the same time can be installed a number of H-beams and to install a beautiful finish on the H-beams and advertisements Or a moving passage such as an animal can be provided.

In order to achieve the above object, the reinforcing device at both ends of the tunnel according to the present invention includes a plurality of reinforcing members that are bent near both ends of the tunnel formed to be inclined from the ground, and the plurality of reinforcing members are fixed to the base retaining wall under the tunnel. It is characterized by having a government.

The reinforcing member is characterized in that the H-beam bent to the same curvature of the tunnel.

The tunnel is a tunnel in which corrugated steel is installed, and the fixing part is a corrugated steel plate which is disposed opposite to a corrugated steel plate fixed to the foundation retaining wall and inserted into and fixed to the concrete reinforcing block and disposed near both ends of the tunnel. Consists of a reinforcing plate consisting of, the reinforcing member is characterized in that the insert is fixed to the concrete is filled in the space formed between the corrugated steel plate and the reinforcing plate of the tunnel.

In addition, the tunnel is a tunnel with a corrugated steel plate is installed, the fixing portion is fixed to the foundation retaining wall and consists of a reinforcement plate consisting of a corrugated steel sheet disposed opposite the corrugated steel sheet disposed near both ends of the tunnel, the reinforcing member is It is characterized in that the insert is fixed to the concrete is filled in the space formed between the corrugated steel plate and the reinforcement plate of the tunnel.

According to the reinforcement device according to the present invention, by using the H-shaped steel by simply reinforcing the bell mouse portion can support the side pressure acting during compaction equipment or compaction, and can be easily installed without any other fixing member or formwork In addition, it can be applied to a bell-mouth tunnel under construction as well as an existing tunnel.

In addition, it is possible to support the lateral pressure by reinforcing the bell mouse parts to be installed at both ends of the tunnel, and at the same time, it is possible to install a plurality of H-beams and to install a beautiful finish on the H-beams, and to move advertisements or animals. Can be prepared.

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

<Example 1>

3 is a perspective view showing a bell mouse-type tunnel in which the reinforcing device according to the present invention is installed, FIG. 4 is a plan view thereof, and FIG. 5 is a front view thereof.

As shown in Fig. 3, the reinforcement device 1 according to the present invention is installed in a bell-mouse-type tunnel having a shape in which both ends of the tunnel, that is, the entrance and exit sides of the tunnel, are cut out obliquely from the ground. Hereinafter, for convenience of description, a portion inclinedly cut from the ground on the entrance side and the exit side of the tunnel is referred to as a 'bell mouse portion'.

The tunnel described in the present embodiment may be composed of a tunnel using conventional concrete, but preferably is formed of a corrugated steel tunnel using a corrugated steel sheet having a high shape strength by forming a curved wave on a metal plate.

The reinforcing device 1 at both ends of the tunnel according to the present invention comprises a reinforcing member 10 and a fixing portion 20 for fixing the reinforcing member.

The reinforcing member 10, but may use a variety of reinforcing members such as steel or steel, it is preferable to use H-shaped steel as in this embodiment. The reinforcing member 10 is formed by bending the H-shaped steel, and the H-shaped steel is formed by bending at approximately the same curvature of the corrugated steel sheet forming the tunnel. That is, the flange portion of the H-beams are installed by bending to have a curvature approximately equal to the curvature of the corrugated steel sheet in a state in which the flange portion faces the ground and the web portion is disposed perpendicular to the ground.

The reinforcing member 10 is fixed to the foundation retaining wall 5 forming the lower portion of the tunnel by the fixing portion. In the present embodiment, the fixing portion 20 will be described as an example to be installed in the bell mouse type tunnel already installed.

The fixing part 20 is composed of a concrete reinforcement block 21 and a reinforcement plate 22.

The concrete reinforcement block 21 may be installed over a predetermined length in the longitudinal direction of the tunnel. That is, in order to distribute the load acting on the reinforcing member 10 or to ensure that the plurality of the reinforcing members behave integrally with the corrugated steel sheet forming the tunnel, the bell mouse portion ends from the vicinity of the end of the tunnel. It is preferable to provide more than length.

The concrete reinforcement block 21 may be configured to be fixed to the foundation retaining wall by drilling a hole in the upper portion of the foundation retaining wall and inserting an anchor bolt 21a, and to install the concrete reinforcement block 21 in the tunnel. Corrugated steel sheet forming the formwork for the concrete reinforcement block formwork is formed as part of the formwork and can be constructed so that the anchor bolt and the cast concrete is installed integrally.

Then, the reinforcing plate 22 is inserted into the concrete reinforcing block 21 is installed. The reinforcement plate 22 is inserted and fixed to the concrete reinforcement block is composed of a corrugated steel plate disposed to face the corrugated steel plate disposed near the both ends of the tunnel. The reinforcing plate 22 is composed of a corrugated steel sheet having the same curvature as the corrugated steel sheet forming the tunnel of the bell mouse portion, and is disposed to face the corrugated steel sheet of the tunnel. That is, as shown in Figure 4, the valley portion of the corrugated steel plate forming a tunnel is arranged to abut the mountain portion of the reinforcement plate, and is fastened and assembled by a bolt or nut between the corrugated steel plate forming a tunnel and the reinforcement plate It is arranged to provide a space.

Then, the concrete is filled in the space between the corrugated steel plate forming the tunnel and the reinforcing plate, and before the filled concrete is cured, the reinforcing member is inserted into the space by inserting the reinforcing member into the space without additional fixing member. It can be fixed to the fixing portion.

As described above, by fixing the plurality of reinforcement members made of H-shaped steel to the foundation retaining wall by the reinforcement plate and the concrete reinforcement block, the side pressure acting on the bell mouse portion can be distributed and burdened by the plurality of reinforcement members. In addition, by connecting the flange portions of the H-shaped steel as a reinforcing member with a member such as a steel plate, it can be used as a passage for humans or animals, and the tunnel is beautifully finished by using a finishing material with a beautiful appearance such as glass or synthetic resin in the H-shaped steel. It may also form the entry and exit ports of the

<Example 2>

Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 6 and 7.

Fig. 6 is a perspective view showing a bell mouse-type tunnel in which a reinforcing device according to a second embodiment of the present invention is installed, and Fig. 7 is a front view thereof.

In the present embodiment, except for the configuration of the fixing portion, the other components are the same as in the first embodiment, the same reference numerals are given and the duplicate description thereof will be omitted.

Although the first embodiment has described the reinforcement device applied to the tunnel already installed, the present embodiment relates to the reinforcement device of the tunnel under installation and construction, and the structure of the fixing part is different from the first embodiment.

In the present embodiment, the fixing portion 20 'is composed of a second reinforcing plate (23).

In the installation of the fixing part according to the present embodiment, first, the second reinforcing plate 23 is inserted into the concrete of the foundation retaining wall before the concrete is hardened when the foundation retains the concrete. Can be installed without

That is, the positions of the peaks and valleys of the corrugated steel that are installed in the bell mouse portion of the tunnel are determined in advance, and the valleys of the reinforcement plate are positioned at the peaks of the corrugated steel opposite to the peaks and valleys of the corrugated steel that form the tunnel. After determining the position of the reinforcement plate so as to, the installation is completed by inserting the reinforcement plate in the determined position before the concrete of the foundation retaining wall is cured.

Then, when the corrugated steel sheet forming the tunnel is constructed, the corrugated steel sheet forming the tunnel with the reinforcing plate is fastened and assembled by bolts or the like.

Then, the concrete is filled in the space between the corrugated steel plate forming the tunnel and the reinforcing plate, and before the filled concrete is cured, the reinforcing member is inserted into the space by inserting the reinforcing member into the space without additional fixing member. It can be fixed to the fixing portion.

As described above, the plurality of reinforcing members made of H-shaped steel are fixed to the foundation retaining wall only by the reinforcing plate, so that the installation and the construction are more convenient, and the side pressure acting on the bell mouse portion is dispersed by the plurality of reinforcing members. I can bear it. In addition, by connecting the flange portions of the H-shaped steel as a reinforcing member with a member such as a steel plate, it can be used as a passage for humans or animals, and the tunnel is beautifully finished by using a finishing material with a beautiful appearance such as glass or synthetic resin in the H-shaped steel. It is also possible to form the entrance and exit of the.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings attached to this specification clearly show some of the technical ideas included in the present invention, and modifications that can be easily inferred by those skilled in the art within the scope of the technical ideas included in the specification and drawings of the present invention. It is obvious that both and specific embodiments are included in the scope of the technical idea of the present invention.

1 is a perspective view showing a bell mouse type tunnel according to the prior art.

2 is a cross-sectional view showing the mounting structure of the bell mouse portion of the tunnel according to the prior art.

Figure 3 is a perspective view showing a bell mouse-type tunnel is installed reinforcement device according to the present invention.

4 is a plan view of FIG. 3.

5 is a front view of FIG. 3.

6 is a perspective view illustrating a bell mouse-type tunnel in which a reinforcing device is installed according to another embodiment of the present invention.

FIG. 7 is a plan view of FIG. 6.

8 is a front view of FIG. 6.

<Description of the symbols for the main parts of the drawings>

1: Reinforcement device at both ends of tunnel

10: reinforcing member

20: fixed part

21: concrete reinforcement block

22: reinforcement plate

23: second reinforcement plate

Claims (4)

delete delete In the reinforcing device at both ends of the tunnel, A plurality of reinforcing members bent at both ends of the tunnel inclined from the ground, and a fixing part for fixing the plurality of reinforcing members to the foundation retaining wall below the tunnel, The reinforcing member is H-shaped steel bent to the same curvature of the tunnel, The tunnel is a tunnel in which the corrugated steel sheet is installed, The fixing part, It is composed of a reinforcement plate composed of a concrete reinforcement block fixed to the foundation retaining wall, and a corrugated steel plate inserted and fixed to the concrete reinforcement block and disposed opposite the corrugated steel plates disposed near both ends of the tunnel, And the reinforcing member is inserted into and fixed to concrete filled in a space formed between the corrugated steel sheet and the reinforcing plate of the tunnel. In the reinforcing device at both ends of the tunnel, A plurality of reinforcing members bent at both ends of the tunnel inclined from the ground, and a fixing part for fixing the plurality of reinforcing members to the foundation retaining wall below the tunnel, The reinforcing member is H-shaped steel bent to the same curvature of the tunnel, The tunnel is a tunnel in which the corrugated steel sheet is installed, The fixing part is fixed to the foundation retaining wall and consists of a reinforcement plate composed of a corrugated steel sheet disposed opposite the corrugated steel sheet disposed near both ends of the tunnel, And the reinforcing member is inserted into and fixed to concrete filled in a space formed between the corrugated steel sheet and the reinforcing plate of the tunnel.

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