JP4448729B2 - Lining concrete curing device - Google Patents

Description

  The present invention relates to a curing apparatus for lining concrete.

In tunnel lining concrete, curing measures are taken to prevent cracks due to drying shrinkage.
For example, there is a technique in which the back surface of a water retaining sheet that is brought into contact with the lining concrete surface is pressed with an air tube, and water is supplied from a perforated water conduit attached to a nonwoven fabric that is a water retaining sheet to wet and cure (Patent Document) 1).
In addition, by placing a sheet curved to approximately the same curvature on the inner peripheral side of the lining concrete, an ultrasonic humidifier is installed in the semi-ring-shaped space formed between the sheet and the lining concrete. There is also a technique for wet curing with water vapor generated by the operation of an ultrasonic humidifier (see Patent Document 2).
In addition, there is also a technique of rearranging the lining concrete curing teleform (see Patent Document 3).
Japanese Patent Laid-Open No. 10-102773 JP 2000-73696 A JP 2003-155898 A

However, the technology for supplying moisture from the perforated water conduit attached to the water retaining sheet and moisturizing it requires a non-woven fabric as the water retaining sheet and an air tube that presses the back of the water retaining sheet in addition to the water conduit. There is a problem that the cost of equipment, management and movement is high.
In addition, the technology of forming a semi-ring-shaped space between the lining concrete and the sheet arranged on the inner circumference side and moistening with water vapor generated from the ultrasonic humidifier is also used for the electrical wiring and the ultrasonic humidifier. Since water supply is required, there is a problem that the cost of equipment, management, and movement is high as well.
In the case of the technology for rearranging the lining concrete curing teleform, there is a problem that the curing teleform itself is large and complicated, and the cost of equipment, management and movement is high.

  It is an object of the present invention to eliminate the need for water supply or a large-scale device for curing lining concrete, and to facilitate management and movement and reduce costs.

In order to solve the above-described problems, the present invention is a curing device 10 for lining concrete 1 after demolding, for example, as shown in FIGS. A curing balloon 20 in which an outer peripheral surface 21 is in close contact with a concrete surface substantially uniformly, and a substantially portal-shaped moving carriage 11 that supports and mounts the curing balloon 20 on an inner peripheral surface 22 thereof. To do.

In this way, the outer peripheral surface of the curing balloon inflated in an arch shape is held in an almost uniform contact state with the lining concrete surface, thereby preventing cracks caused by drying shrinkage of the lining concrete after demolding Can be cured well.
And since the curing balloon which expand | swells in such an arch shape was mounted in the substantially portal-shaped mobile trolley supported by the internal peripheral surface, management and movement are easy and cost can also be reduced. Moreover, since it is a gate-shaped moving carriage, a work vehicle traveling in the tunnel can pass through the moving carriage.

The present invention is the above-described lining concrete curing apparatus 10, and as shown in FIGS. 1 to 4, for example, the movable carriage 11 is formed with a pipe passage portion 15 through which the pipe 2 provided in the tunnel is passed. In addition, a pipe receiving portion 16 is provided for placing and supporting the pipe 2 in the pipe passage portion 15.

  Thus, since the pipe provided in the tunnel is passed through the pipe passing part of the mobile carriage and supported on the pipe receiving part, the movement in the tunnel and the curing of the lining concrete surface by the balloon can be performed satisfactorily.

The present invention is the above-described lining concrete curing device 10, for example, as shown in FIGS. 1 to 4, in order to enable work on the curing balloon 20 around the movable carriage 11 before and after the movable carriage 11. The working stairs 17 are provided.

  As described above, using the work stairs provided before and after the moving carriage, it is possible to easily perform an operation such as an inspection for the curing balloon around the moving carriage.

According to the present invention , the curing balloon that swells in an arch shape and the outer peripheral surface is in close contact with the lining concrete surface is mounted on the substantially portal-shaped moving carriage supported by the inner peripheral surface. And cost can be reduced. In addition, a work vehicle traveling in the tunnel can pass through a gate-shaped movable carriage.

According to the present invention, in addition to the above-described effects, there is an advantage that the piping in the tunnel is passed through the movable carriage so that the movement in the tunnel and the curing of the lining concrete surface by the balloon can be performed satisfactorily.

According to the present invention, in addition to the above-described effects, there is an advantage that an operation such as an inspection for a surrounding curing balloon can be easily performed using work stairs provided before and after the moving carriage.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
In FIG. 1 to FIG. 4 showing a lining concrete curing state in a tunnel as a configuration of an embodiment to which the present invention is applied, 1 is lining concrete, 2 is a blow pipe (pipe), 3 is a slide centle, 4 is Rail 10 is a lining concrete curing device, 11 is a moving carriage, and 20 is a curing balloon.
As shown in the figure, a blower pipe 2, which is a pipe extending to the face, is installed in the upper part of the tunnel by hanging support of an unillustrated anchor member. Then, the slide center 3 covered with the cover sheet moves to the next concrete placing section.

In this embodiment, the slide centre 3 is moved to the next section and the exposed inner peripheral surface of the lining concrete 1 is held in close contact with the curing balloon 20 provided on the moving carriage 11 of the lining concrete curing device 10, Curing lining concrete 1
The curing balloon 20 is in the form of an air mat formed by connecting elastic sheets such as inflatable / shrinkable rubber and waterproof cloth. When the curing balloon 20 is supplied with air from a blower (not shown), the curing balloon 20 swells and becomes an arch shape with both the outer peripheral surface 21 and the inner peripheral surface 22 as shown in the figure, and the outer peripheral surface 21 is the inner periphery of the lining concrete 1. Adheres almost uniformly to the surface.
The above curing balloon 20 is mounted on the movable carriage 11 by supporting the inner peripheral surface 22 thereof on the outer surface of the substantially portal-shaped movable carriage 11 as shown in the figure.

In the embodiment, as shown in the drawing, the movable carriage 11 is formed in a substantially gate shape by left and right support columns 12 and upper arch portions 13 formed by assembling steel pipe pipes along the inner peripheral surface of the tunnel.
In the illustrated example, six struts 12 are arranged, for example, at intervals of 3 m, and wheels 14 are provided at the lower ends of the struts 12. As shown in FIG. 5, the wheel 14 rolls in the rail 4 made of channel steel laid on both the left and right sides in the tunnel. The rail 4 is also used for moving the slide center 3.
Further, the arch portion 13 is formed with a blower tube passage portion (pipe passage portion) 15 through which the blower tube 2 is passed in the front-rear direction. In the blower tube passage portion 15, a blower tube receiving portion (pipe receiving portion) 16 on which the blower tube 2 is placed and supported by a roller 16 a on the lower portion and both sides thereof is provided. For example, four air duct receiving portions 16 are arranged at intervals of 6 m.

Work stairs 17 are provided before and after the movable carriage 11. As shown in the figure, the work staircase 17 is attached along the support column 12 and the arch portion 13, and is also provided above the blower tube passage portion 15.
In the mobile carriage 11 described above, the curing balloon 20 is attached to the outside of the left and right struts 12 and the arch portion 13 thereabove at the inner peripheral surface 22 thereof. In the embodiment, six curing balloons 20 are connected to the support carriage 12 so as to be connected to the support 12 and are mounted on the movable carriage 11. Here, one curing balloon 20 has a predetermined circumference and thickness corresponding to the lining concrete 1 and is lightweight, for example, 80 kg.
The left and right sides of the inner peripheral surface 22 of the curing balloon 20 have a straight shape along the vertical support column 12 in the illustrated example. However, as shown by the dotted lines in FIG. 3 and FIG. A curved shape along the inner peripheral surface of the concrete 1 may be used.

Next, the curing method of the lining concrete 1 using the above lining concrete curing device 10 will be described.
First, prior to the forward movement of the movable carriage 11, the worker removes the blower pipe 2 from the anchor member using the front work staircase 17 and also removes the anchor member from the upper part of the tunnel so that the blower pipe 2 is connected to the blower pipe passage portion. 15, the blower tube 2 is placed on the roller 16 a of the blower tube receiver 16.
Thereafter, the movable carriage 11 is moved forward by a towing vehicle or the like (not shown), and the movable carriage 11 is stopped in the curing section of the lining concrete 1 exposed by moving the slide center 3 to the next section.

Then, when the curing balloon 20 is inflated by supplying air from the blower, the outer peripheral surface 21 having an arch shape is in close contact with the inner peripheral surface of the lining concrete 1 as illustrated. This state is maintained by continuing the operation of the blower.
Here, the adhesion state of the curing balloon 20 to the lining concrete 1 is confirmed by a worker using the work stairs 17 before and after the movable carriage 11.
After the predetermined curing period has elapsed, the operation of the blower is stopped, air is discharged from the curing balloon 20, and the movable carriage 11 is advanced to the next curing section.
As the movable carriage 11 moves forward, the worker attaches the anchor member to the upper part of the tunnel and reattaches the blower pipe 2 to the anchor member using the rear work staircase 17.

As described above, by holding the outer peripheral surface 21 of the curing balloon 20 inflated in an arch shape in a state of being almost uniformly adhered to the inner peripheral surface of the lining concrete 1, the lining concrete 1 after demolding Curing for preventing cracks resulting from drying shrinkage of the resin can be performed well.
Since the moving carriage 11 is equipped with the curing balloon 20 that expands like this in an arch shape, management and movement are easy, and cost reduction can be achieved.
In addition, since it is a gate-shaped mobile carriage 11, a work vehicle (not shown) traveling in the tunnel can pass through the mobile carriage 11, and there is no hindrance to the work vehicle.

In the above embodiment, air is supplied to the balloon by the blower, but other fluids such as gas and water may be supplied to and discharged from the balloon.
And in a curing balloon and a moving trolley | bogie, it can change suitably about a specific shape, detailed structure, etc.
Moreover, about piping, it is not restricted to the ventilation pipe of embodiment, A water distribution pipe and another piping may be sufficient.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view showing a configuration of an embodiment to which the present invention is applied and showing a curing state by a lining concrete curing device in a tunnel. It is the schematic side view which showed the curing state by the lining concrete curing apparatus of FIG. 1 from the side. It is the figure shown along the arrow AA line of FIG. It is the figure shown along the arrow BB line of FIG. It is an enlarged view of the wheel and rail part of FIG.

Explanation of symbols

1 Lined concrete 2 Blower pipe (pipe)
3 slide center 4 rail 10 lining concrete curing device 11 moving carriage 12 strut 13 arch part 14 wheel 15 blower pipe passage part (pipe passage part)
16 Blower pipe receiving part (pipe receiving part)
16a roller 17 work staircase 20 curing balloon 21 outer peripheral surface 22 inner peripheral surface

Claims (2)

Curing equipment for tunnel lining concrete after demolding,
A curing balloon that swells in an arch shape due to the supply of fluid, and the outer peripheral surface adheres almost uniformly to the lining concrete surface;
It is equipped with an almost portal-shaped moving carriage that supports and mounts this curing balloon on its inner peripheral surface,
The movable carriage is configured in a substantially gate shape by left and right pillars and upper arches assembled with steel pipe pipes along the inner peripheral surface of the tunnel,
Each of the left and right struts is arranged in a plurality in spaced intervals in the length direction of the tunnel,
Below the arch portion, near the upper portions of the left and right columns, a horizontal steel pipe pipe extending in the direction between the columns on the left and right sides is provided,
Between the arch portion of the movable carriage and the lateral steel pipe pipe, a pipe passage portion for passing a pipe as a blower pipe provided in the tunnel is formed, and the pipe is placed in the pipe passage portion. pipe receiving portion for supporting the plurality et been at intervals in the longitudinal direction of the movable carriage,
The lining concrete curing device according to claim 1, wherein the pipe receiving portion is configured to mount the pipe and to support the lower part of the pipe and the rollers on both sides thereof . The cover according to claim 1, wherein work stairs for enabling work on the surrounding curing balloons are provided in front and rear of the movable carriage so as to protrude forward and backward from the movable carriage. Engineering concrete curing equipment.

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