JP2001336398A - Method and apparatus for arranging reinforcing material in tunnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and easily arrange reinforcing materials such as reinforcing bars on an internal wall surface of a tunnel, and to improve the arrangement efficiency of the reinforcing materials especially onto a curved portion of the tunnel. SOLUTION: According to a method and apparatus for arranging the reinforcing materials 12 on the internal wall surface 36 of the tunnel during concrete lining into the tunnel 14, the reinforcing bars 12 which have been assembled by a feeding truck 16 for hoisting and assembling the reinforcing materials 12 at an upper portion of the tunnel, are fed onto a pair of conveyor substrates 30 of a conveyor truck 28, which are arranged in a manner being movable in a tunnel circumferential direction in order to convey the reinforcing materials 12. Thereafter, the assembled reinforcing materials 12 are sequentially conveyed from a lower end to an upper end of the tunnel 14 by means of the conveyor substrates 30, and then they are stuck to the tunnel. In this manner, the reinforcing materials 12 are arranged in the tunnel 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for arranging a reinforcing member such as a reinforcing bar for reinforcing a rock on a wall surface side of a tunnel when lining concrete in a tunnel. It is.

[0002]

2. Description of the Related Art Originally, concrete lining on the inner wall surface of a tunnel is performed by first applying a thin layer of primary lining concrete on the inner wall surface of the tunnel in order to stop water from the rock side not excavated and to reinforce the rock. It is well known that after spraying, a reinforcing material such as a reinforcing bar is disposed on the inner wall surface side of the tunnel to reinforce rock, and then a secondary lining concrete is cast (see FIG. 6).

Prior to placing the secondary lining concrete, in order to arrange a reinforcing material on the inner wall surface side of the tunnel, the reinforcing material is processed and assembled at a construction site, and a lifting mechanism such as a lift is integrally provided. It was lifted by a trolley and stopped by workers manually.

[0004] Also, it is known that a straight line portion and a curved portion are often mixed in a single tunnel.

In FIG. 6, 12 is a reinforcing material, 14 is a tunnel, 36 is a tunnel inner wall surface, 52 is a primary lining concrete, 54 is a secondary lining concrete, and 56 is a bedrock.

[0006]

Conventionally, as described above, a bogie for arranging reinforcing materials such as reinforcing bars is provided integrally with an elevating mechanism such as a lift, which increases the bogie length.
In a tunnel where a straight portion and a curved portion coexist, there has been a problem that it is impossible to dispose a reinforcing material along the curved portion of the tunnel without fail.

[0007] Further, since the bogie length is long, the bogie moves on the curved part of the tunnel in a narrow mine, where the distance between the bogie and the inner wall surface of the tunnel is not so large in the width direction of the tunnel, so that the bogie does not come into contact. And paying attention to the above, and a great deal of labor is required.

[0008] In addition, in the work of arranging the reinforcing material, since it can be performed only at one place of the bogie, there is a problem that the work efficiency is not good.

In view of the above drawbacks, the present invention makes it possible to efficiently and easily arrange a reinforcing material such as a reinforcing bar on the inner wall surface of a tunnel. It is an object of the present invention to provide an excellent method and apparatus for disposing a reinforcing material in a tunnel.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a method and an apparatus for arranging reinforcing materials such as reinforcing bars for rock reinforcement on the inner wall surface side of a tunnel during concrete lining in a tunnel. Lifting and transporting the reinforcing material by disposing the assembled reinforcing material movably in the circumferential direction of the tunnel on a transportable truck that is movable in the tunnel by a supply cart for assembling the reinforcing material at the top After being supplied onto a pair of transport tables, each transport table sequentially transports the assembled reinforcing material from the lower end to the upper end of the tunnel, and secures each reinforcing material to reinforce the tunnel. It is characterized by disposing materials.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 5, an apparatus for arranging reinforcing materials such as reinforcing bars in a tunnel according to the present invention has the following configuration.

[0012] One of the reinforcing members 12 such as a reinforcing bar used in the present invention.
As for the size, the width of the tunnel 14 in the length direction is about 4 m, and the length of the tunnel 14 in the circumferential direction is about 4 m to 7 m.

The reinforcing member 12 is lifted, and the reinforcing member 12 is
Is provided movably in the tunnel 14.

In this embodiment, the supply cart 16 is composed of two pairs of legs 18 and a frame 20 provided between the upper portions of the two pairs of legs 18.
And a scaffold 2 provided at an appropriate position on the legs 18 and the frame 20.
2 to form a frame.

The reinforcing member 1 is provided on the upper part of the supply truck 16.
A crane, which is a lifting mechanism 24 for lifting the lift 2, is provided, and a trolley 26 for assembling the lifted reinforcing members 12 and supplying the assembled reinforcing members 12 to a carrier cart 28 described below is provided. Has been established.

The reinforcing material 12 supplied from the supply truck 16 side is provided in front of the supply truck 16 (left side in FIG. 2).
A transport cart 28 for transporting in the circumferential direction of the tunnel,
It is provided movably in the tunnel 14.

In this embodiment, the carriage 28 comprises two pairs of vertically movable legs 18 and a frame 20 provided between the legs 18.
And a scaffold 2 provided at an appropriate position on the legs 18 and the frame 20.
The scaffold 22 is movable in the width direction of the tunnel 14 so as not to hinder the transfer of a pair of transfer tables 30 described later in the circumferential direction of the tunnel.

A pair of carriages 30 for moving the reinforcing member 12 in the circumferential direction of the tunnel are arranged on a carriage 28.

In this embodiment, each carriage 30 is movably provided on a guide rail 32 provided on the outer periphery of the carriage 28 via wheels 34, and is driven along the guide rail 32 by driving the wheels 34. 28 moves.

Further, a reinforcing member holding mechanism for moving the reinforcing members 12 supplied from the supplying vehicle 16 side and assembled on the supplying vehicle 16 toward and away from the inner wall surface 36 of the tunnel is provided on each carrier 30. 38 are deployed.

As shown in FIG. 3, the reinforcing member holding mechanism 38 has a plurality of link members 40 rotatably cross-supported to form a pantograph. A cylinder 44 is connected to an end of the cylinder 40, and the mounting plate 42 is moved up and down by the expansion and contraction of the cylinder 44, so that the retained reinforcing material 12 is removed from the inner wall surface 36 of the tunnel.
Approach and separate to the side.

In the drawing, reference numeral 46 denotes a traveling rail of the transport vehicle 28, 48 denotes a driving roller, and 50 denotes a curved portion of the tunnel 14.

A method of disposing the reinforcing member 12 on the tunnel inner wall surface 36 side in the tunnel 14 using the reinforcing member disposing device according to the present invention will be described in detail below.

In the present invention, the inner wall surface 36 of the tunnel is
This refers to the surface of the thin primary lining concrete sprayed on the tunnel excavation surface.

First, the transporting carriage 28 which is a reinforcing member arranging device
Then, the supply cart 16 is moved to a predetermined position in the tunnel 14.

Next, the reinforcing members 12 are sequentially lifted on the supply truck 16 by the lifting mechanism 24 of the supply truck 16 and assembled.

Next, the assembled reinforcing member 12 is moved to the carrier 28 side.

At this time, the assembled reinforcing member 12 is supported by the trolley 26 on the supply cart 16 and the trolley 2
6 to supply them onto each carrier 30 of the carrier 28.

Next, the reinforcing material 12 supplied from the supply cart 16 and assembled on the supply cart 16 is transferred to the transport cart 2.
8 and is transported from the lower end to the upper end of the tunnel 14 sequentially along the guide rail 32 along the guide plate 32.

At this time, since the transfer tables 30 are arranged in a pair (two), the reinforcing members 12 assembled at the same time can be transferred from the center of the tunnel 14 to both sides, thereby shortening the construction period. It becomes possible.

Further, the mounting plate 42 is moved up and down by the reinforcing member holding mechanism 38 of the transfer table 30, and the reinforcing member 12 is moved toward and away from the inner wall surface 36 of the tunnel to adjust the arrangement position of the reinforcing member 12.

As shown in FIG. 4, at the curved portion 50 of the tunnel 14, the supply truck 16 and the transport truck 28
Can be arranged along the curved portion 50 of the tunnel 14, respectively, so that the arrangement efficiency of the reinforcing member 12 in the curved portion of the tunnel 14 is further improved.

Next, the reinforcing members 12 transported by the transport tables 30 are successively fixed, whereby the inner wall surface 3 of the tunnel is
The arrangement of the reinforcing member 12 on the side 6 is completed.

By repeating this operation sequentially,
The reinforcing member 12 is disposed on the inner wall surface 36 side of the tunnel 14.

In addition, by lifting the pre-assembled reinforcing member 12 on the supply truck 16, the time required to supply the assembled reinforcing member 12 to the transport cart 28 can be reduced.

In this example, the reinforcing material 12 has a width of 4
m, the length of which is about 4 m to 7 m in the circumferential direction of the tunnel, a plurality of which are used, but the width, length and number thereof are not limited to this example. May be.

The lifting mechanism 24 for lifting the reinforcing member 12 of the supply truck 16 is a crane. However, the lifting mechanism 24 is not particularly limited as long as it is a lift or another mechanism capable of lifting and lowering.

The transport means of the transport platform 30 of the transport vehicle 28 is based on the guide rails 32 and wheels 34, but any transport mechanism such as a chain or belt can be used.

Although the tunnel 14 is substantially circular, the tunnel 14 may be semicircular, and it is obvious that the tunnel 14 can be used for construction of underwater tunnels and sewage systems.

[0040]

According to the method and apparatus for arranging reinforcing materials such as reinforcing bars in a tunnel according to the present invention, the reinforcing materials are sequentially lifted on a supply truck, assembled at the upper part, and the assembled reinforcing materials are transported. Supplied to the trolley side, the assembled reinforcing material is sequentially transported from the lower end to the upper end of the tunnel by a pair of transporting trolleys, and the reinforcing material is fixed along the inner wall surface of the tunnel to fix each reinforcing material. Can be arranged efficiently and easily.

Further, since a pair (two) of transport tables are provided, it is possible to transport simultaneously assembled reinforcing members from the center of the tunnel to both sides, thereby shortening the construction period.

Further, since the vehicle is constituted by the supply carriage and the transport carriage, both carriages can be respectively disposed along the curved portion of the tunnel, and the efficiency of arranging the reinforcing material on the curved portion of the tunnel can be improved. Is better.

[Brief description of the drawings]

FIG. 1 is a front view of an apparatus for arranging reinforcing materials in a tunnel according to the present invention, showing a state in which the left side from the center is descending, and a state in which the right side from the center is ascending.

FIG. 2 is a side view of the same.

FIG. 3 is an enlarged front view of a main part of the transfer table.

FIG. 4 is a plan view showing the state of use.

FIG. 5 is a front view showing a reinforcing member.

FIG. 6 is a sectional view showing lining concrete in a tunnel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Reinforcement 14 Tunnel 16 Supply trolley 28 Transport trolley 30 Transport trolley 36 Tunnel inner wall 50 Curved

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yukiyoshi Inoue 2-22 Bentendori, Naka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Obayashi-gumi Yokohama Branch Co., Ltd. Gifu Kogyo Co., Ltd. (72) Inventor Daisuke Sumi 144, 14-Jojo, Masamasa-cho, Motosu-gun, Gifu Prefecture F-term in Gifu Kogyo Co., Ltd. 2D055 BB02 GB01 KA00 KB04 KB05

Claims (2)

[Claims] 1. A method of arranging a reinforcing member (12) such as a reinforcing bar for rock reinforcement on the inner wall surface (36) side of a tunnel when concrete lining the tunnel (14). And a supply trolley (16) for assembling reinforcement (12) at the top
With this, the assembled reinforcing material (12) is transported in the tunnel (14) on a transportable carriage (28) that is movable in the tunnel circumferential direction, and the reinforcing material (12) is transported. After being supplied onto a pair of transport tables (30), the reinforcing members (12) assembled by each transport table (30) are sequentially transported from the lower end to the upper end of the tunnel (14). Fix the reinforcement (12),
A method for arranging a reinforcing material in a tunnel, comprising arranging a reinforcing material (12) in a tunnel (14). 2. A device for arranging a reinforcing material (12) such as reinforcing steel for rock reinforcement on the inner wall surface (36) side of a tunnel when concrete lining the tunnel (14). And a trolley (16) for lifting the reinforcement (12), assembling the reinforcement (12) at the top, and a tunnel (1).
4) A transport vehicle provided with a pair of transport vehicles (30) for transporting the reinforcing material (12), which is movably disposed in the tunnel circumferential direction on a transport vehicle (28) movable in the inside. (28), and along the curved part (50) of the tunnel (14), both carriages (16),
(28) is disposed, and a reinforcing member (12) is disposed corresponding to a curved portion (50) of the tunnel (14).