JP2002275831A - Reinforcing/repairing material painting method and device of concrete structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing/repairing material painting method and a device of a concrete structure easy in reinforcing/repairing work, and reducing a loss in a reinforcing/repairing material. SOLUTION: The reinforcing/repairing material 40 is inputted from a supply nozzle 25 to between a surface of a skeleton 30 of the reinforcing/repairing concrete structure and a film 20 having one end pressed down by a film pressing-down means 9. The film 20 is pressed from above by a pressing roller 12. While supplying the film 20, a slide base 10 mounted with these members is moved, and the reinforcing/repairing material 40 is painted on a reinforcing/ repairing surface. Since the painted reinforcing/repairing material 40 is covered with the film 20, slipping-out and peeling-off are not caused, and the loss is reduced. Since the reinforcing/repairing material is automatically painted by the device, efficient and unform painting can be performed so that an operator can be released from laborious work.

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 coating a reinforcing / repair material for reinforcing or repairing concrete structures such as bridges, tunnels, and buildings.

[0002]

[Prior Art] The piers of expressways etc. collapsed due to the earthquake,
Due to accidents such as concrete debris falling from the lower surface of the tunnel ceiling, reinforcement and repair of side walls, side surfaces, and lower surfaces of slabs of concrete structures such as side surfaces of piers and lower surfaces of ceiling slabs have been performed. Conventionally, such reinforcement and repair of the side surface and the lower surface of the slab of the concrete structure have been performed manually by using a trowel or the like with a reinforcing material such as PPMG mortar on the side surface or the lower surface of the slab of the concrete structure.

[0003]

When the reinforcement / repair material is manually applied by troweling, the amount of work per unit time is small, the number of days required for the work is high, and the work cost is high. In addition, the work of manually reinforcing and repairing the side surface of the concrete structure or the lower surface of the slab by applying a reinforcing / repair material by troweling is a difficult and painful operation.

[0004] When reinforcing a concrete structure, a reinforcing bar is arranged on the work surface to be reinforced and a reinforcing / repair material is filled and applied from above the reinforcing bar, thereby reinforcing the reinforcing bar.・ It is embedded in the repair material to reinforce the pillars and walls of the concrete structure and the lower surface of the slab. When the reinforcement / repair material is applied manually, the reinforcement / repair material is filled on the back side of the reinforcing bar, that is, between the reinforcing bar and the work surface such as the side surface of the concrete structure or the lower surface of the slab, thereby forming a clearance space. Construction work must be performed so that the reinforcement and repair work is difficult. Furthermore, during the reinforcement and repair work, the reinforcement and repair material may fall off or come off, resulting in wasteful use of the reinforcement and repair material.

[0005] There is also a method in which this work is not performed manually by troweling, but instead, the reinforcing and repairing material is pressed and applied to the side of the concrete structure or the work surface such as the lower surface of the slab by a pumping machine. In this case, simply feeding the reinforcement / repair material to the work surface with a pump or the like and painting it between the reinforcement and the work surface, such as the side of the concrete and the side of the concrete structure or the lower surface of the slab, is not required. The material is not filled securely,
There is a problem that a gap may be generated, and sufficient reinforcement and repair cannot be performed. Even when working with this pump,
Reinforcement / repair materials may fall off or come off, resulting in wasteful use of reinforcement / repair materials. Even when the work is performed by the pumping machine, the work is performed by hand, so that the work is difficult and troublesome.

Accordingly, the present invention provides a method for reinforcing and
Reinforcement of concrete structures that can reliably fill the repair material, facilitate reinforcement and repair work, and reduce loss of reinforcement and repair material.
An object of the present invention is to provide a repair material applying method and a reinforcing / repair material applying apparatus capable of automatically applying a reinforcing / repair material.

[0007]

According to the present invention, there is provided a method for applying a reinforcing / repair material to a concrete structure, the method comprising the steps of reinforcing and repairing a surface of a concrete structure such as a side surface of a concrete structure to be reinforced or repaired or a lower surface of a slab. The repairing material was charged, the reinforcing material and the repairing material supplied were covered with a film, and the reinforcing member and the repairing material were pressed from above the film with a pressing member so as to be applied to the surface of the concrete structure. More specifically, the reinforcement / repair material is moved between the surface of the structure and the film while being pressed by a pressing member such as a roller while the reinforcement / repair material is being put between the surface of the structure and the film, and the reinforcement / repair material is moved to the concrete structure Between the film surface and the film.

As an apparatus for carrying out the above method, the apparatus for applying a reinforcing / repair material for a concrete structure according to the present invention is provided with a slide base which is moved by driving a feed means provided in a housing, and is attached to the slide base. Film supply means, supply means for supplying a reinforcement / repair material between the surface of the concrete structure and the film, and a pressing mechanism for pressing the reinforcement / repair material supplied from above the film and painting the surface of the concrete structure And Further, the apparatus is provided with an interval adjusting means for adjusting the interval between the surface of the concrete structure to be reinforced and repaired and the slide base. The pressing mechanism may include a pressing roller, pressure applying means for applying a pressing force to the pressing roller, pressure adjusting means for adjusting the pressure applied by the pressure applying means, or moving the pressing roller in a pressing direction. Is provided. Further, the pressing mechanism can adjust the thickness of the reinforcing / repair material applied to the surface of the concrete structure. Further, a film pressing means for pressing one end of the film against the surface of the concrete structure is provided.

[0009]

FIG. 1 is a side view of an embodiment of a reinforcement / repair material coating apparatus for carrying out a method for coating a reinforcement / repair material of a concrete structure according to the present invention, and FIG. 2 is a front view thereof. is there. The housing 1 of the reinforcing / repair material coating apparatus according to this embodiment includes a guide rail 3 for guiding the movement of the slide base 10, and interval adjusting means attaching members 2 provided at both ends of the guide rail 3. At both ends of the space adjusting means mounting member 2, space adjusting means 8 is provided. The distance adjusting means 8 has a structure in which the amount of protrusion from the mounting member 2 can be adjusted with a screw or the like. Further, a film pressing means 9 is provided on the lower space adjusting means attaching member 2, and a tip rod 9a of the film pressing means 9 is urged by a spring or the like to protrude forward.

The guide rail 3 is provided with a ball screw 4 along its length, and the ball screw 4 is driven by a drive motor 6 via a transmission mechanism 7 such as a gear. A ball nut (not shown) provided on the slide base 10 is screwed into the ball screw 4. The rotation of the ball screw 4 causes the slide base 10 to be guided by the guide rail 2 and move linearly. It is configured. Also, in FIG.
Is a housing 1 for attaching a reinforcement / repair material coating device to the tip of an arm of a construction machine such as a power shovel or a backhoe.
It is an attachment member provided in.

A pressing mechanism 11 is mounted on the slide base 10. The pressing mechanism 11 includes a pressing roller 12.
A swing arm 13 on which the pressing roller 12 is rotatably mounted, a spring 14 as a pressure applying means for applying a pressing force to the pressing roller 12, and an arm control cylinder 15 as a pressing force adjusting means. It is configured.

The swing arm 13 has one end to which the pressing roller 12 is rotatably mounted, and the other end rotatably mounted to a shaft 16 mounted on the slide base 10. In addition, the swing arm 1 is
3 outward (counterclockwise around axis 16 in FIG. 1)
A spring 14 is applied as a pressure applying means between the other end and the slide base 10 so as to be rotated. Further, an arm control cylinder 15 is provided between the other end of the swing arm 13 and the slide base 10 as pressure adjusting means for adjusting the outward pressing force of the pressing roller applied by the spring 14. ing.

Further, on the slide base 10, a film supply means 21 composed of a film roll or the like for supplying a polymer film 20 such as polyethylene vinyl or polyvinyl chloride, and a guide roller 22 for guiding the film 20 are provided. Is provided. Also, slide base 1
0, a film pressing arm 23 is provided below the pressing roller 14 (on the opposite side of the guide roller 22 across the pressing roller 14), and the tip rod 23a of the film pressing arm 23 is protruded by a spring or the like in the protruding direction. A roller is pivotally attached to the tip of the tip rod 23a so as to be freely rotatable. Between the guide roller 22 and the pressing roller 14, a sensor 24 for detecting the supply state of the reinforcing / repair material is provided.
Is provided. In this embodiment, three sensors 24
Are arranged side by side as shown in FIG. In addition, a supply nozzle 25 as a reinforcing / repair material supply unit whose tip is disposed outside the guide roller 22 is attached to the slide base 10.

Next, a description will be given of the operation of the reinforcing / repair material coating apparatus when reinforcing and repairing the side surface and the lower surface of the slab of the concrete structure. The example shown in FIG. 1 shows a state in which a reinforcing / repair material coating operation is performed in an operation of reinforcing a side surface of a concrete structure.

First, the surface of the skeleton 30 to be reinforced and repaired for the concrete structure is removed to remove dust, oil, mold, etc., and then the reinforcing steel bar 31 is attached with a mounting bracket. Repair parts (PP
MG mortar) is sprayed onto the surface of the work to perform undercoat spraying. After that, using the reinforcing / repair material applying apparatus of the present invention, the reinforcing / repair material applying method of the present invention is applied to perform a reinforcing / repair material applying step.

First, the reinforcement / repair material coating device is attached to the tip of an arm of a construction machine such as a power shovel or a backhoe via an attachment member 5 provided on the housing 1.
Depending on the thickness of the reinforcement / repair material 40 to be painted,
The protrusion amount of the interval adjusting means 8 is adjusted. Further, the spring 14 of the pressure applying means corresponding to the thickness of the reinforcing / repair material 40 is used.
Select and attach. Further, the pressure applied by the pressing roller 12 is adjusted by adjusting the arm control cylinder 15 of the pressure adjusting means.

Then, the construction machine is operated, and the reinforcing / repair material coating device is disposed on the surface of the skeleton 30 of the concrete structure to be reinforced and repaired as shown in FIG. That is, the tip of the interval adjusting means 8 presses the work surface,
The work surface and the slide surface of the slide base 10 are arranged in parallel. At this time, the film supply means 2
The film 20 is taken out of the film roll 1 and outside the guide roller 22 and the pressing roller 12 (the work surface side).
Through the film holding means 9 at the lower end position of the work surface.
Press and fix with.

Next, the reinforcing / repair material 40 is supplied from the supply nozzle 25.
Is fed between the work surface and the film 20.
When the reinforcement / repair material 40 falls and is filled between the work target surface of the frame 30 and the film 20, and the three sensors 24 are turned on by the weight of the reinforcement / repair material 40, the drive motor 6 is driven. Then, the slide base 10 is raised by the mechanism of the ball screw 4 and the nut. The pressing roller 12 presses the reinforcement / repair material 40 against the surface of the body 30 via the film 20 by the tension force of the spring 14, and the pressing force is pressed by the pressure set by the arm control cylinder 15.

When the slide base 10 rises, the pressing roller 12 also rises while rotating, and as this rises, the film 20 is supplied from the film supply means 21, and the reinforcing / repair material 40 is placed on the surface of the frame 30. It is painted with a predetermined thickness, and its surface is covered and held by the film 20. In addition, the reinforcing / repair material 40 is applied to the surface of the skeleton 30 while being pressed via the film 20 by the pressing roller 12.
That is, the gap between the reinforcing bar 31 and the surface of the frame 30 is evenly filled, and no space is generated. Further, when the film holding arm 23 presses the film 20 against the reinforcement / repair material 40, the film 20 adheres to the reinforcement / repair material 40, thereby preventing the reinforcement / repair material 40 from peeling off.

If the work surface of the frame 30 is partially collapsed to form a concave portion, the reinforcement / repair material 40 is filled in the concave portion, and as a result, the load applied to the sensor 24 is reduced. Then, when at least one sensor 24 is turned off, the lifting of the slide base 10 stops, and a large amount of the reinforcing / repair material 40 is filled at this point. This makes it possible to reliably fill the reinforcement / repair material 40 even with irregularities on the work target surface.
In addition, since the reinforcement / repair material 40 is supplied so as to fill between the film 20 and the work surface, the reinforcement / repair material 40
There is little spilling, and the loss of the reinforcing / repair material 40 is small.

In this way, the reinforcing / repair material 40 is filled between the film 20 and the work surface, and the reinforcing / repair material 40 is pressed and painted on the work surface. Is stopped, the film 20 is cut, the work for applying the reinforcement / repair material to the work target surface is completed, and the construction machine is driven to drive the reinforcement / repair material application device. Is moved to the next work surface position. A film cutting device may be attached to the reinforcing / repair material coating device, and the cutting device may automatically cut the film.

The above is the description of the operation of the reinforcing / repair material coating method and the apparatus of the present invention, and the operation thereof. In the above-mentioned example, the example in which the work target surface is the side wall of the concrete structure is shown, but the lower surface of the slab of the concrete structure can also be reinforced by the method of the present invention and the reinforcing / repair material coating device of the present invention. The repair material coating method is applicable. In particular, when reinforcing and repairing the lower surface of the slab, the reinforcement / repair material 4
0 is pressed and pressed against the lower surface of the slab and the surface thereof is covered with the film, so that the reinforcing / repair material 40 does not fall partially.

After the reinforcing / repair material 40 is applied, the film 20 is peeled off from the reinforcing / repair material 40 after the reinforcing / repair material 40 has dried to some extent, and the pressure is further increased to apply the reinforcing / repair material 40. Then, the reinforcement / repair material 40 is applied again by the same method. When the finishing process is performed, after the film 20 is peeled off, a finishing reinforcing / repair material is sprayed on the surface, and this reinforcing / repairing operation is completed.

The adhesive strength between the reinforcing / repair material 40 and the concrete surface is much larger than the adhesive force between the reinforcing / repair material 40 and the film 20, and even if the film 20 is peeled off from the reinforcing / repair material 40, The repair material 40 does not adhere to the film and peel off together. The thickness of this film is preferably about 0.02 mm to 0.2 mm, and 0.05 mm
Is desirable. Further, by using a transparent film, the dried state and quality of the applied reinforcing / repair material 40 can be confirmed.

In the above description, the work of applying the reinforcing / repair material 40 from above with the reinforcing bar applied has been described. However, the present invention is also applicable to the case where the reinforcing / repair material 40 is directly applied to the surface of the concrete structure without applying the reinforcing bar. Is applicable.

In the above embodiment, the arm control cylinder 15 as the pressure adjusting means is provided. Instead of the arm control cylinder 15, the arm control cylinder 15 is provided in the outward direction of the swing arm (counterclockwise around the axis 16 in FIG. 1). A stopper for restricting the movement may be received. In this case, the position of the stopper and the distance adjusting means 8 are used to reinforce and fill the coating.
The thickness of the repair material 40 is determined, and the pressing force with which the pressing roller 12 presses the reinforcing / repair material 40 via the film 20 is determined by the tension of the spring 14 of the pressure applying means.
What is necessary is just to select and attach the spring 14 so as to obtain a desired pressing force.

In the above-described embodiment, a rotatable roller is used as the pressing means. However, other than the roller, a pressing member having an arcuate surface may be used. In the present embodiment, the pressing roller 12 is attached to the tip of the swing arm 13,
Although the component force of the pressing force by the pressing roller 12 is also in the traveling direction of the pressing roller (the direction toward the supply side of the reinforcing / repair material), the pressing member such as the pressing roller is simply moved with respect to the work surface. You may make it press with a hydraulic cylinder, a solenoid, etc. in a perpendicular direction.

In the above embodiment, the film holding means 9 is provided in the reinforcing / repair material coating apparatus. However, the film holding means 9 is not provided in the reinforcing / repair material coating apparatus.
When the application of the repair material is started, the film 20 may be manually fixed to the work surface.

Further, in the above-described embodiment, the slide base is moved by the ball screw nut mechanism. However, a linear motor, an endless chain, a belt or the like may be used instead of the ball screw nut mechanism. In particular, in the case of reinforcing or repairing the inner peripheral surface of the tunnel, since the work target surface may be in an arc shape, the slide base 10 can only move linearly by the ball screw nut mechanism as in the above-described embodiment. Also, it is desirable that the pressing roller moves along the arc surface of the work target surface. In such a case, the slide base may be moved in an arc shape using an endless chain, a belt, a crawler, or the like, and the pressing roller may be moved in an arc shape. And
If the running surface of the endless chain, belt, crawler, etc. can be changed with rollers, etc., so that the curved surface of the running surface of the slide base formed by endless chains, belts, crawlers, etc. can be changed arbitrarily, concrete structures In accordance with the curved surface of the surface to be reinforced or repaired, the stiffening / repairing member can be applied to the work surface by pressing the pressing roller of the pressing means with a predetermined pressure to the work surface via the film.

[0030]

According to the present invention, the film is reinforced and
Since the repair material is applied to the surface of the concrete structure and held, the reinforcement and repair material can be surely applied to the surface of the concrete structure and adhered to it. Since the concrete structure surface is reliably filled between the concrete structure surfaces to be formed and no space is formed, accurate and reliable reinforcement and repair can be performed. In addition, the use of the film slows down the drying speed of the reinforcing / repair material, so that a repair operation is prepared.

Further, by using the reinforcing / repair material coating apparatus of the present invention, the reinforcement / repair material coating is automatically performed, so that the construction efficiency is improved and labor can be saved. Furthermore, the thickness of the reinforcement / repair material can be adjusted by the pressing mechanism,
In addition, the thickness can be made uniform, and the processing accuracy is remarkably improved. Then, since the reinforcing and repair material coating work is performed by the machine, the work is freed from the conventional difficult and troublesome work, and the working environment is improved.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of a reinforcement / repair material coating apparatus for performing a method for coating a reinforcement / repair material of a concrete structure according to the present invention.

FIG. 2 is a front view of the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 housing 2 spacing adjusting means mounting member 3 guide rail 4 ball screw 5 mounting member 6 drive motor 7 transmission mechanism 8 spacing adjusting means 9 film pressing means 10 slide base 11 pressing mechanism 12 pressing roller 13 swing arm 14 spring (pressure applying means) 15 Arm Control Cylinder (Pressing Force Adjusting Means) 20 Film 21 Film Supply Means 22 Guide Roller 23 Film Holding Arm 24 Sensor 25 Supply Nozzle 25 30 Body 31 Reinforcing Bar 40 Reinforcement / Repair Material

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Yoshitaka Yoshida, Inventor 3-31-5 Takada, Toshima-ku, Tokyo Inside Seikiken Construction Co., Ltd. (72) Takashi Nogiba 3-31-5 Takada, Toshima-ku, Tokyo F-term (reference) in Stock Tree Construction Co., Ltd. 2D055 DB07 KA00 KB05 LA16 2D059 AA03 GG01 GG40 GG55 2E176 AA01 BB01 BB03 BB27

Claims (10)

[Claims] 1. A reinforcing / repair material is supplied to a surface of a concrete structure to be reinforced or repaired, and the supplied reinforcing / repair material is covered with a film, and a reinforcing member is repaired with a pressing member from above the film. A method of applying a reinforcement / repair material for a concrete structure by pressing the material to apply it to the surface of the concrete structure. 2. The method according to claim 1, wherein the surface of the concrete structure is a side surface of the structure or a lower surface of the slab. 3. The reinforcing / repair material is moved between the surface of the structure and the film while being pressed between the surface of the structure and the film while being pressed by the pressing member. The method for applying a reinforcing / repair material for a concrete structure according to claim 1 or 2, wherein the method is applied by filling in between. 4. The method for applying a reinforcing / repair material to a concrete structure according to claim 1, wherein said pressing member comprises a roller. 5. A slide base which is moved by driving a feed means provided in a housing, a film supply means attached to the slide base, and a reinforcing / repair material between a surface of a concrete structure and the film. A reinforcing means for a concrete structure, comprising: a supply means for supplying; and a pressing mechanism for pressing a reinforcing / repair material supplied from above the film and applying the material to the surface of the concrete structure.
Repair material coating equipment. 6. The concrete structure reinforcing / repairing material according to claim 5, wherein the housing is provided with a spacing adjusting means for adjusting a spacing between a surface of the concrete structure to be reinforced / repaired and a slide base. Coating equipment. 7. The pressure mechanism includes a pressing roller, pressure applying means for applying a pressing force to the pressing roller, and pressure adjusting means for adjusting the pressure applied by the pressure applying means. The reinforcing / repair material coating apparatus for a concrete structure according to claim 5 or 6, wherein 8. The concrete structure reinforcing / repairing material coating apparatus according to claim 7, wherein the pressing mechanism has a stopper for limiting movement of the pressing roller in the pressing direction instead of the pressure adjusting means. 9. The concrete structure according to claim 5, wherein the pressing mechanism is capable of adjusting the thickness of the reinforcement / repair material applied to the surface of the concrete structure. apparatus. 10. The concrete structure according to claim 5, wherein said housing is provided with film pressing means for pressing one end of said film against a surface of a concrete structure. apparatus.