JP2013221253A - Auxiliary apparatus for repairing/reinforcing concrete structure, and repairing/reinforcing method using the apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an auxiliary apparatus for repairing/reinforcing a concrete structure which allows for easy and labor saving repairing/reinforcing work for unreeling a photo-curable FRP sheet and attaching the sheet to the surface of concrete, enabling only one operator to easily and rapidly perform the attaching work with a uniform quality and construction accuracy; and a repairing/reinforcing method using the apparatus.SOLUTION: A sheet roll support 3 installed on the main shaft 20 of a traveling trestle 2 which moves along the surface of a spot in need of repair of a concrete structure 7 is rotatable around the main shaft 20. A sheet roll support member 4, to which a photo-curable fiber reinforced resin sheet roll 5 is detachably attached, is installed at one end of the sheet roll support 3. A sheet guide member 6 for guiding the unreeling of the photo-curable fiber reinforced resin sheet 50 unreeled from the photo-curable fiber reinforced resin sheet roll 5 is attached to the sheet roll support member 4.

Description

  This invention is a repair in which a photocurable fiber reinforced resin sheet (hereinafter sometimes referred to as a photocurable FRP sheet) that cures and adheres when receiving ultraviolet rays is applied to the surface of a concrete structure requiring repair, It belongs to the technical field of a repairing / reinforcing method performed using a device for assisting the repairing and reinforcing work by extending the photocurable FRP sheet toward the same surface during the reinforcing work, and more specifically, , Repairing and pasting light-curing FRP sheet on the concrete surface can be done easily and labor-saving, and even one worker can easily and quickly perform it, and expect a certain level of quality and construction accuracy. The present invention relates to an auxiliary device for repairing / reinforcing concrete structures and a repair / reinforcing method using the same.

  A concrete structure such as a tunnel has a problem in that its surface causes peeling or cracking due to deterioration over time. For this reason, a photo-curing FRP sheet (for example, about 1 mm in thickness) that cures and adheres to the surface of the concrete structure requiring repair as described above is adhered and adhered for repair and reinforcement work. An apparatus and a method for caulking are disclosed in, for example, the following Patent Documents 1 to 3, are generally known, and have already been implemented.

  For example, Patent Document 1 below is a configuration in which a sheet sticking device and an ultraviolet irradiation device are installed on a traveling vehicle that travels in the tunnel axial direction on the bottom surface in the tunnel. When the sheet affixing device adheres the photocurable FRP sheet to the concrete surface and moves on the traveling vehicle by one work step, the ultraviolet irradiation device advances to a position immediately below the photocurable FRP sheet, and the photocurable FRP sheet ultraviolet rays are emitted. Irradiate to adhere.

  In Patent Document 2 below, a bracket is installed at the upper end of a support column installed on a frame that can move on the bottom surface of the tunnel, and a shaft member is attached to a shaft coupling provided at the upper end of the bracket. A main frame is attached to a fixed base frame, and a plurality of members are bonded by applying pressure to the photo-curing FRP sheet between the ends of the swinging arm installed at the upper end of the main frame to bring them into close contact with the repair-needed portions. This is a configuration in which the pressing roller is installed in the axial direction of the tunnel.

Patent Document 3 below is a method in which a photocurable FRP sheet is attached to a concrete structure where repair is necessary and adhered.
The repair and reinforcement procedures are briefly described below.
First, the surface of the concrete structure is examined, and it is started by checking the presence or absence of a repair-necessary part such as an opening crack or a cross section joint. In addition to the visual confirmation of the worker, the investigation can be performed more effectively using, for example, an infrared sensor.
Next, clean the surface of the investigated concrete structure where necessary for repair with a brush or the like to remove dirt and foreign matter. This is because the adhesion strength of the photo-curable FRP sheet is reduced when dirt, foreign matter, or the like adheres to the concrete surface.
Next, the light curable FRP sheet is cut into a necessary size, and the light curable FRP sheet is pulled by an operator so that the light curable FRP sheet is not twisted or loosened, while maintaining a stable state. A curable FRP sheet is affixed to a concrete structure requiring repair, and pressure is applied to the light curable FRP sheet with a roller or a wooden mallet, for example, so that the concrete surface is bonded and pressure bonded. In addition, when a pressure is applied and a vibrator is used in combination to apply vibration to the photocurable FRP sheet, the surface can be more effectively adhered to the concrete surface.
Finally, when the photo-curable FRP sheet is pressure-bonded to the concrete surface using an ultraviolet irradiation device, the photo-curable FRP sheet is cured and bonded to the concrete surface. it can.

JP 2011-117129 A JP 2000-136696 A JP 2005-120820 A

  The inventions disclosed in Patent Documents 1 and 2 above are devices that attach and bond a photo-curing FRP sheet to a place where repair of a concrete structure such as a tunnel is necessary. There is a problem that it requires and labor cost is very high.

  The repair and reinforcement method disclosed in Patent Document 3 needs to keep the sheet in a stable state so that the photocurable FRP sheet is not twisted or loosened before being attached to the concrete surface where repair is required. Therefore, in addition to the operator who sticks the sheet, many workers such as an operator who pulls the sheet and an operator who supports the sheet roll in which the sheet is rolled are required. In the future, it is considered that repair and reinforcement work for social infrastructure facilities will increase, and in the methods that require many workers, such as the repair and reinforcement work performed by the above method, it is considered that the cost increases. Reduction is a major issue. Also, since the construction accuracy is related to the operator's technology, when many workers perform the work of attaching the photo-curing type FRP sheet manually, the finish will vary, and a certain quality and construction accuracy cannot be expected. .

  The object of the present invention is to feed out the photo-curable FRP sheet so as to face the surface of the concrete structure to be repaired in a substantially parallel manner, while applying tension to prevent twisting or loosening. By guiding the feeding of the photo-curable FRP sheet, repair and reinforcement work for attaching the photo-curable FRP sheet to the surface where repair is required can be carried out easily and accurately, with a small number of workers, especially one person. To provide an auxiliary device for repairing / reinforcing concrete structures and a repairing / reinforcing method using the same, which can be performed easily and quickly even by an operator and can be expected to have a certain quality and construction accuracy. It is.

As a means for solving the problems of the prior art described above, an auxiliary device for repairing / reinforcing a concrete structure according to the invention described in claim 1 is:
A repairing / reinforcing work auxiliary device 1 that feeds a photocurable fiber-reinforced resin sheet 50 that cures and adheres when receiving ultraviolet rays toward the surface of the concrete structure 7 where repair is necessary,
The traveling platform 2 that is moved along the surface of the repaired portion of the concrete structure 7 includes a main shaft 20 and a plurality of carriages 21 and 21 that support at least both ends of the main shaft 20 substantially horizontally. The spindle 20 of the gantry 2 is supported by a support member 22 on the carriage 21 so that the height can be adjusted in the vertical direction.
On the main shaft 20, a sheet roll support 3 configured to be rotatable around the main shaft 20 is installed,
The sheet roll support 3 is provided with a rotating device 34 for rotating the sheet roll support 3 around the main shaft 20, and is reinforced with a photocurable fiber wound around one end of the sheet roll support 3. A sheet roll support member 4 to which the resin sheet roll 5 can be attached or detached is installed,
A sheet guide member 6 that guides the feeding of the photocurable fiber reinforced resin sheet 50 fed from the photocurable fiber reinforced resin sheet roll 5 is attached to the sheet roll support member 4.
The traveling frame 2 is moved to a place where the concrete structure 7 needs to be repaired, and the main shaft 20 is positioned so as to be substantially parallel to the concrete surface. The rotating device 34 causes the sheet roll support 3 and the sheet roll support member 4 to move to the main shaft 20. The photo-curing fiber reinforced resin sheet 50 is rotated around the surface of the sheet so that the light-curing FRP sheet 50 is guided by the sheet guide member 6 to be repaired. It is characterized in that it is used for repairing and reinforcing work to be applied to the surface of the necessary part.

The invention described in claim 2 is an auxiliary device for repairing and reinforcing a concrete structure according to claim 1,
The sheet roll support 3 that is rotatably mounted on the main shaft 20 is configured to be movable in the longitudinal direction of the main shaft 20 and to be fixed at a use position.

The invention described in claim 3 is an auxiliary device for repairing or reinforcing a concrete structure according to claim 1 or 2,
Both ends of the main shaft 20 constituting the traveling platform 2 are supported by the support member 22 on the carriage 21 via the joint member 23, and the joint member 23 is moved up and down with respect to the support member 22. It is configured to be able to adjust the height in the direction,
The support member 22 is configured to be capable of adjusting the support position in the length direction of the main shaft 20.

The invention described in claim 4 is an auxiliary device for repairing or reinforcing a concrete structure according to any one of claims 1 to 3,
The sheet roll support member 4 includes a bearing body 40 that is attached to and supported by one end of the sheet roll support 3 with a bolt 3a, and a photocurable fiber reinforced fiber that is configured to be attached to or detached from the bearing body 40. It is comprised by the axial part 41 which attaches the resin sheet roll 5, It is characterized by the above-mentioned.

The invention described in claim 5 is an auxiliary device for repairing and reinforcing a concrete structure according to any one of claims 1 to 4,
The sheet guide member 6 attached to the sheet roll support member 4 is configured to be able to protrude or retreat toward a repair-required portion, and to be concentric with the center of the photocurable fiber reinforced resin sheet roll 5. It is characterized by that.

A method for repairing and reinforcing a concrete structure according to the invention described in claim 6 is:
Repair of a concrete structure according to the invention described in claims 1 to 5 above, a method for repairing and reinforcing a concrete structure to be performed using an auxiliary device for reinforcement work,
Moving the traveling gantry 2 to move the concrete structure 7 to a repaired or reinforced part, and to repair the concrete structure 7 and position the surface of the reinforced part and the main shaft in a substantially parallel arrangement;
The photocurable fiber reinforced resin sheet roll 5 is attached to the sheet roll support member 4, and the photocurable fiber reinforced resin sheet roll 50 is phased substantially parallel from the same photocurable fiber reinforced resin sheet roll 5 toward the surface of the repaired portion. Extending the sheet so as to face each other and proceeding through the sheet guide member 6;
The photocurable fiber reinforced resin sheet starts to be attached to the surface of the repair-required portion, and the photocuring is performed while rotating the sheet roll support 3 and the sheet roll support member 4 at a constant speed by the rotating device 34. A step of guiding the mold fiber reinforced resin sheet 50 with the sheet guide member 6 and affixing and adhering to the surface of the repair-required portion; and
At the stage where the pasting step is performed to the end, once the light curable fiber reinforced resin sheet 50 is stopped and cut to perform edge cutting;
Irradiating and adhering ultraviolet light to the photocurable fiber reinforced resin sheet 50 that has been constructed and adhered to the surface of the repair-needed portion as described above;
Hereinafter, the same process of sticking to the surface of the repair required part of the concrete structure 7 is repeated.

The invention described in claim 7 is a method for repairing and reinforcing a concrete structure according to claim 6,
Using the auxiliary device for repairing and reinforcing a concrete structure according to the inventions described in claims 1 to 5, the photocurable fiber reinforced resin sheet 50 is fed out to a place where repair is necessary, and the photocurable fiber reinforced resin is supplied. When the sheet guide member 6 guides and affixes the sheet 50 to the end, the photocurable fiber-reinforced resin sheet 50 is cut and trimmed, and when the attachment to the facing part is finished, the traveling platform 2 The sheet roll support base 3 is moved by one pitch in the longitudinal direction of the main shaft 20 in a state where the sheet is fixed, and is moved to the place where the next repair is necessary. Repeat the process of adhering the sheet 50 to the surface of the repair-needed surface and bringing it into close contact within the length range of the spindle 20, and if the range is exceeded, move the traveling platform 2 to the next construction site. Osamu, wherein the advancing repeatedly reinforcement work.

  The auxiliary device for repairing / reinforcing concrete structures according to the first to fifth aspects of the present invention is attached to the sheet roll support member 4 by the sheet roll support base 3 that rotates around the main shaft 20 by the rotation device 34. Since the photocurable FRP sheet 50 is fed out from the photocurable FRP sheet roll 5 so as to face the surface of the concrete structure 7 where repair is necessary, the photocurable FRP sheet 50 is fed out. By adding an auxiliary work that the operator holds down slightly by hand, the concrete structure 7 can be stuck directly to the surface of the repair-required portion, and is not twisted or loosened carelessly. In other words, the photocuring FRP sheet 50 is supported by the sheet guide member 6 and is pulled to guide the feeding of the sheet 50, thereby repairing the photocuring FRP sheet 50 on the surface where repair is necessary. Reinforcing work can be done easily and accurately.

When the repair / reinforcement method according to the inventions described in claims 6 and 7 is carried out using the repair / reinforcing work auxiliary device described in claims 1 to 5 above, the worker alone attaches the traveling platform 2 to the concrete. It moves to the inside of the structure 7 and is positioned so that the surface of the concrete structure 7 and the main shaft 20 are arranged substantially parallel to each other, and the photo-curing FRP sheet 50 is substantially parallel to the surface of the repair required portion. The photo-curing FRP is fed out so as to face each other and starts to be attached to the surface where repair is necessary, while rotating the sheet roll support 3 and the sheet roll support member 4 at a constant speed by the rotating device 4. The sheet 50 is supported by the sheet guide member 6 to guide the feeding of the sheet 50, and after that, it is necessary to repair the photocurable FRP sheet 50 only by adding an auxiliary operation in which one operator presses it with a hand. It can be brought into close contact paste as it is closely to the surface. That is, repair and reinforcement work for attaching the photocurable FRP sheet 50 to the surface where repair is required can be easily performed with labor saving, so that the operator supporting the photocurable FRP sheet roll 5 and the photocurable FRP sheet 50 can be used. There is no need for an operator to support by pulling, and a series of operations for attaching and bonding the photo-curing type FRP sheet 50 to the repaired portion of the concrete structure 7 is less, especially one operator. Even so, it can be carried out easily and quickly.
Further, when the repair / reinforcing work auxiliary device 1 is used, as described above, the photo-curing FRP sheet 50 is fed out so as to face the surface of the repair-required portion so as to be relatively parallel to the photo-curing type. In order to prevent the FRP sheet 50 from being twisted or slackened carelessly, the sheet guide member 6 supports the sheet 50 to guide the feeding of the sheet 50, and then the operator performs an auxiliary operation to hold the sheet slightly by hand. Since only the FRP sheet 50 is attached to the surface of the repair-required portion, it is possible to expect a certain quality and construction accuracy regardless of whether the operator's technical skill is skilled or not.

It is the perspective view which showed the whole auxiliary | assistant apparatus for repair and reinforcement work which concerns on this invention. It is the front view which showed the state which installed the auxiliary | assistant apparatus for repair and reinforcement work which concern on this invention in the repair required location of a concrete structure. It is the perspective view which expanded and showed the sheet roll support stand and the sheet roll support member of the auxiliary apparatus for repair and reinforcement work which concern on this invention. It is the perspective view which disassembled and showed the sheet roll support member. (A), (b) is explanatory drawing which showed the process of repairing a repair required location and reinforcement work using the auxiliary apparatus for repair and reinforcement work which concerns on this invention.

In the auxiliary device for repairing and reinforcing a concrete structure according to the present invention, the traveling base 2 that is moved along the surface of the concrete structure 7 where repair is necessary is configured such that the main shaft 20 and at least both ends of the main shaft 20 are substantially disposed. The main shaft 20 of the traveling platform 2 is supported by a support member 22 on the carriage 21 so that the height can be adjusted in the vertical direction. On the main shaft 20, a sheet roll support 3 configured to be rotatable about the main shaft 20 is installed. The sheet roll support 3 is provided with a rotating device 34 for rotating the sheet roll support 3 around the main shaft 20, and a photocurable FRP sheet roll 5 wound in a roll shape is attached to one end of the sheet roll support 3. An attachable / detachable sheet roll support member 4 is installed. A sheet guide member 6 that guides the feeding of the photocurable FRP sheet 50 fed from the photocurable FRP sheet roll 5 is attached to the sheet roll support member 4.
The traveling platform 2 is moved to a place where the concrete structure 7 needs to be repaired so that the main shaft 20 is positioned substantially parallel to the concrete surface, and the sheet roll support 3 and the sheet roll support member 4 are centered on the main shaft 20 by the rotating device 34. The photo-curable FRP sheet 50 is fed out so as to be relatively parallel to the surface of the repair-required portion, and the photo-curable FRP sheet 50 is guided by the sheet guide member 6 to the surface of the repair-required portion. It is used for repairing and reinforcing work.

  In the concrete structure repair and reinforcement method according to the present invention, the traveling base 2 is moved to move the concrete structure 7 to the repaired or reinforced portion, and the surface of the repaired and reinforced portion of the concrete structure 7 is substantially parallel to the main shaft. Position in the correct arrangement. The photocurable FRP sheet roll 5 is attached to the sheet roll support member 4, and the photocurable FRP sheet 50 is fed out from the photocurable FRP sheet roll 5 so as to face the surface of the repair-required portion in a substantially parallel manner. Proceed via the guide member 6. Affixing the photocurable FRP sheet 50 to the surface of the repair-required portion is started, and the photocurable FRP sheet is rotated while rotating the sheet roll support 3 and the sheet roll support member 4 at a constant speed by the rotating device 34. 50 is guided by the sheet guide member 6 and affixed and adhered to the surface of the repair-needed portion. At the stage where the pasting process has been performed to the end, the photo-curable FRP sheet 50 is once stopped, cut and trimmed. The photo-curable FRP sheet 50 that has been constructed and adhered to the surface of the repair-required portion as described above is irradiated with ultraviolet rays and bonded. Thereafter, the same process of pasting on the surface of the concrete structure 7 where repair is necessary is repeated.

Below, the repair of the concrete structure which concerns on this invention, the auxiliary | assistant apparatus for reinforcement work, and the repair and reinforcement method implemented using the apparatus are demonstrated based on the Example shown in FIGS.
The auxiliary device 1 for repairing and reinforcing work shown in FIGS. 1 to 5 performs a series of operations for attaching and bonding a photo-curable FRP sheet 50 to a repair-necessary portion of a concrete structure 7 such as a pipe wall, a floor board or a tunnel. This device is used to assist a small number of workers, especially one worker, and pushes the traveling platform 2 to the place where the concrete structure 7 needs to be repaired. Then, after being fixed, the photo-curable FRP sheet 50 is fed out so as to face the surface of the repair-required portion in a substantially parallel manner.

As shown in FIGS. 1 and 2, the traveling platform 2 that moves along the surface of the concrete structure 7 where repair is required includes two main shafts 20 and two ends that support both ends of the main shaft 20 substantially horizontally. It is comprised with the trolley | bogies 21 and 21. FIG.
The carriage 21 is provided with two support members 22, 22 that are vertically erected on the carriage 21 with an interval of about 30 cm, and the main shaft 20 has both ends at the support members 22, 22. The joint member 23 is connected in common and is supported by the support member 22 by tightening the fixing bolt 23a. The main shaft 20 can adjust the height in the vertical direction by moving the joint member 23 in the vertical direction with respect to the support member 22.
The support member 22 can freely adjust the support position in the length direction of the main shaft 20 by loosening the fixing bolt 23a. After installation at an appropriate support position, the position can be firmly fixed by tightening the fixing bolt 23a again. That is, by adjusting the support position of the support member 22, the movement range of the sheet roll support base 3 described later can be widened or narrowed.
The main shaft 20 can be freely adjusted in height in the vertical direction by moving the joint member 23 in the vertical direction with respect to the support member 22.

  The main shaft 20 is a square member made of aluminum having a side of about 38 mm, and has a length of about 3.7 m. However, the main shaft 20 can be implemented by, for example, a round material, and the dimensions and materials are not limited to the above shapes and dimensions.

  A handle 24 attached via a hinge mechanism 24 a is provided on the outer side surface of the joint member 23. The handle 24 is used by extending in the horizontal direction when carrying the repair / reinforcing work auxiliary device 1 to a predetermined place, and when not needed, it is bent downward by 90 degrees to be folded, repaired and reinforced by an operator who performs repair and reinforcement. Can be avoided.

At both ends of each carriage 21 constituting the traveling platform 2, there are provided elastic fixing members 25 for fixing the auxiliary device 1 for repair and reinforcement work by pressing against the concrete surface of the concrete structure 7. The fixing member 25 can be protruded or retracted by manually rotating the adjustment member 25a. Since the auxiliary device 1 for repair and reinforcement work can be firmly fixed to the concrete structure 7 with the protruding fixing member 25, it does not move during the work, and the worker can work safely and satisfactorily. Can do. The fixing member 25 is appropriately used according to the size and shape of the concrete structure 7.
Further, when the concrete structure 7 is a pipe rod shown in FIG. 5 at the central position of the carriage 21, the center line drawn on the bottom surface of the pipe rod 7, and for repair and reinforcement work viewed from the side surface direction. A center line confirmation fitting 26 that aligns with the center of the auxiliary device 1 is provided.

A seat roll support 3 configured to be rotatable about the main shaft 20 and movable in the longitudinal direction of the main shaft 20 is installed on the main shaft 20 of the traveling platform 2.
As shown in FIG. 3 in an enlarged manner, the sheet roll support base 3 has a vertically long shape and is supported by a main shaft 20 penetrating through the upper portion thereof. A slide bearing 30 for supporting the main shaft 20 and a slip ring 35 for energization are provided on the upper side (left side in FIG. 3) on one side of the sheet roll support base 3. The sheet roll support base 3 is configured to be movable in the longitudinal direction on the main shaft 20, and after the sheet roll support base 3 is moved to a use position, the fixing bolt 30a of the slide bearing 30 is tightened. Thus, it can be fixed to the position.
An upper sprocket 31 is provided at the upper part of the other side (right side in FIG. 3) of the sheet roll support 3 and is connected to the lower part of the same side as the upper sprocket 31 by the upper sprocket 31 and a chain 33. A lower sprocket 32 is provided.
On the other side of the lower part of the sheet roll support 3 (left side in FIG. 3), a motor 34 as a rotating device is installed. When the lower sprocket 32 is rotated by driving the motor 34, the rotational force is chained. The sheet roll support 3 is transmitted to the upper sprocket 31 through 33 and rotates around the main shaft 20.
Incidentally, the rotational speed of the sheet roll support 3 is a speed that matches the work speed of the worker, and is about 0.12 to 0.13 rpm as an example.
In addition, the code | symbol 36 shown with the broken line in FIGS. 1-3 is the cover material installed in the side surface in which the upper and lower sprockets 31 and 32 of the said sheet roll support stand 3 were installed.

At one end of the sheet roll support 3, a sheet roll support member 4 configured to attach or remove a roll-shaped photocurable FRP sheet 50 is installed.
3 and 4, the sheet roll support member 4 is attached to one end of the sheet roll support base 3 with bolts 3a and attached to the bearing main body 40. It is comprised with the axial part 41 comprised so that removal was possible. The photocurable FRP sheet roll 5 is attached to the shaft portion 41.
The sheet roll support member 4 can be rotated 360 degrees in the left-right direction by loosening the bolt 3a that is fixed to the sheet roll support base 3, and the photo-curing FRP sheet roll 5 attached to the shaft portion 41 is appropriately attached. Can be set to angle. By tightening the loosened bolt 3a again, the position of the rotated sheet roll support member 4 can be firmly fixed to the sheet roll support base 3.

As shown in FIG. 4, the bearing main body 40 has a configuration in which two L-shaped members 40a and 40b having different bottom plate lengths are combined, and a small L-shape is formed on the upper surface of the large L-shaped member 40a. The member 40b is placed, and the bottom plates of the two L-shaped members 40a and 40b are connected by bolts 40c. By removing the bolt 40c, the small L-shaped member 40b can be detached from the large L-shaped member 40a, and the shaft portion 41 can be attached or detached from the sheet roll support member 4.
The photocuring type FRP sheet roll 5 attached to the coaxial part 41 is pressed against the intermediate part of the shaft part 41 from the inside of the core of the sheet roll so that it does not move during the operation. A fixing member 41a for firmly fixing the position of the FRP sheet roll 5 is provided. As shown in FIG. 4, the shaft portion 41 to which the photocurable FRP sheet roll 5 is attached passes through both ends of the coaxial portion 41 to the bearing holes 41 d and 41 d on the side surface of the bearing main body portion 40, and nuts 41 b and 41 c. It is attached to the bearing main body 40 by tightening.

As shown in FIGS. 1 to 3, the side surface of the bearing main body portion 40 of the sheet roll support member 4 is fed out from the photocurable FRP sheet roll 5 so as to be relatively parallel to the repair required portion. A U-shaped sheet guide member 6 that guides the feeding of the photo-curable FRP sheet 50 is attached while the photo-curable FRP sheet 50 is supported so as not to be twisted or loosened carelessly. .
The seat guide member 6 is attached to a coupling joint 60 protruding outward from the side surface of the bearing main body 40, and the bolt 61 of the coupling joint 60 is loosened to adjust the length so that the seat guiding member 6 is directed to a location requiring repair. Can be pushed out or retracted. Further, the sheet guide member 6 can rotate concentrically with the center of the photocurable FRP sheet roll 5 together with the coupling joint 60.
The sheet guide member 6 set to an appropriate length and angle toward the repair-required portion can be fixed by fixing the bolt 61 of the coupling joint 60.
Although not shown in the drawings, the shape of the sheet guide member 6 is not limited to that shown in the drawings, and for example, an L-shaped configuration may be used.
Further, a sheet roll support base 3 and a turning restriction brake 8 for the sheet roll support member 4 are provided on the side surface of the sheet roll support member 4. However, the turning restriction brake 8 may not be provided.

  Next, a repair / reinforcement method for a concrete structure, which is performed using the above-described repair / reinforcement auxiliary device 1 will be described. The repair and reinforcement method according to the present invention is a concrete structure by operating the auxiliary device 1 from the work of carrying in the repair and reinforcement work auxiliary device 1 described in the first embodiment to the repair required portion of the concrete structure 7. 7 is a configuration in which a series of operations for attaching and bonding the photocurable FRP sheet 50 to the repair-necessary portion 7 is performed by a small number of workers, particularly one operator.

The concrete structure 7 shown in FIGS. 5 (a) and 5 (b) is a pipe culvert and is used to repair and reinforce the repair-required portion using the above-described repair / reinforcement auxiliary device 1. An example is shown.
First, the concrete surface is investigated from the inside of the pipe rod 7, and the presence or absence of a repair required part, such as an opening crack and a cross-section joint, is confirmed. In addition to the visual confirmation of the worker, the investigation can be performed more effectively using, for example, an infrared sensor.
The operator pushes and moves the traveling platform 2 to the confirmed repair required location. The traveling platform 2 can be moved by laying a carriage rail on the bottom surface of the pipe rod 7 along the axial direction of the pipe rod 7 and running on the carriage rail.

  After the traveling platform 2 is moved to the place where the pipe rod 7 needs to be repaired, the fixing member 25 provided on the carriage 21 is pressed against the concrete surface of the tubular rod 7, and the traveling platform 2 is connected to the surface of the tubular rod 7 and the main shaft. Position and fix so that 20 is in a substantially parallel arrangement. The fixing member 25 can be protruded or retracted by rotating the adjusting member 25a.

Next, the photocurable FRP sheet roll 5 is attached to the sheet roll support member 4, the joint member 23 is moved in the vertical direction with respect to the support member 22, and the height of the main shaft 20 constituting the traveling gantry 2. Is adjusted so that the photocurable FRP sheet roll 5 attached to the sheet roll support member 4 faces the surface of the repair-required portion.
In addition, as for the distance of the said photocurable FRP sheet roll 5 and a repair required location, about 7-8 cm is preferable, for example.
Further, the photo-curable FRP sheet roll 5 may be attached to the sheet roll support member 4 in advance before moving the traveling base 2 to the inside of the pipe rod 7. In short, it is appropriately attached according to the construction situation.

The sheet roll support 3 can be moved in the longitudinal direction of the main shaft 20 by loosening the fixing bolt 30a, and the position of the photo-curable FRP sheet roll 5 with respect to the concrete surface at the repair required position can be adjusted. it can.
Further, the range of movement of the sheet roll support 3 is within the length range of the main shaft 20 between the left and right support members 22, 22, but the range is the position of the support member 22 in the length direction of the main shaft 20. It can be widened or narrowed by adjusting in.
Further, the direction of the photocurable FRP sheet roll 5 is adjusted by loosening the bolt 3a for fixing the sheet roll support 3 and the sheet roll support member 4 and rotating the sheet roll support member 4 to an appropriate angle. be able to.

Next, as shown in FIG. 5A, the photo-curing FRP sheet 50 is fed out from the photo-curing FRP sheet roll 5 so as to face the surface of the repair-required portion so as to be relatively parallel to each other. Repair and reinforcement work is proceeded via 6. The sheet guide member 6 is appropriately adjusted to a length and an angle at which the operator can easily work on the surface of the repair-required portion.
While starting the pasting to the surface of the repair required location, while rotating the sheet roll support 3 and the sheet roll support member 4 at a constant speed (about 0.12-0.13 rpm) with the rotating device 34, The sheet-guiding member 6 is pulled and held so that the unrolled photocurable FRP sheet 50 is not carelessly twisted or loosened, and the unfolding of the photocurable FRP sheet 50 is guided. The unrolled photo-curing FRP sheet 50 is assisted by the operator to press the tube cup 7 by hand from the side surface of the tube cup 7 shown in FIG. 5A to the upper surface of the pipe cup 7 shown in FIG. By adding work, it can be stuck and adhered directly to the surface of the repair-needed portion. In addition, at the corner portion of the tube rod 7, the protruding length of the sheet guide member 6 is adjusted, and the photocurable FRP sheet 50 attached to the surface of the tube rod 7 is pressed by the sheet guide member 6. Thus, the sheet 50 can be prevented from being lifted.
As a means for closely attaching the photocurable FRP sheet 50 attached to the surface of the repair-required portion to the same surface, for example, a roller or a wooden mallet is used to apply pressure to the photocurable FRP sheet 50 and apply pressure to the concrete surface. Let When pressure is applied and vibration is applied to the photocurable FRP sheet 50 using a vibrator in combination, it can be more effectively adhered to the concrete surface.
At the stage where the step of attaching the photocurable FRP sheet 50 is performed to the end, the photocurable FRP sheet 50 is temporarily stopped, cut and trimmed.

As described above, the photocurable FRP sheet 50 is fed out to a place where repair is necessary, and the photocurable FRP sheet 50 is guided by the sheet guide member 6 and pasted to the end to complete the photocurable FRP sheet 50. After cutting and edging and pasting to the facing part is completed, the sheet roll support base 3 is moved by one pitch in the longitudinal direction of the main shaft 20 with the traveling base 2 fixed, and the next order Within the length range of the spindle 20, the process of moving to the repair-necessary location (see, for example, the broken line in FIG. 2) and attaching the photo-curing FRP sheet 50 to the surface of the repair-necessary site in the same manner as described above. Repeat with.
When the length range of the main shaft 20 is exceeded, the fixing member 25 of the traveling platform 2 is retracted to release the fixed state of the traveling platform 2, and the operator himself moves the traveling platform 2 to the next construction site. We will then proceed with repair and reinforcement work. In addition, when repairing and reinforcing the next required repair site, the photocurable FRP sheet 50 to be attached later is wrapped and attached to the photocurable FRP sheet 50 that has been applied in advance.

  An ultraviolet irradiation device is installed (not shown) at the position of the light-cured FRP sheet 50 adhered to the repair-required portion, and the light-effect FRP sheet pasted using the ultraviolet irradiation device. When 50 is irradiated with ultraviolet rays, the photocurable FRP sheet 50 can be immediately cured and bonded to the surface of the tube 7. In addition, after the said photocurable type FRP sheet 50 hardens | cures, it is necessary to peel off the coating film of the surface side.

Therefore, the method for repairing and reinforcing a concrete structure according to the present invention does not require an operator who supports the photocurable FRP sheet roll 5, an operator who supports the photocurable FRP sheet 50 by pulling it, and the like. A series of operations for attaching and adhering the photocurable FRP sheet 50 to the repair-required portion of the structure 7 can be easily and quickly performed even by a small number of workers, particularly one operator.
Further, when this repair / reinforcing work auxiliary device 1 is used, as described above, the photocurable FRP sheet 50 is fed out toward the surface of the repair required portion so as to be relatively parallel to the surface, and the photocurable FRP sheet is fed out. In order to prevent the sheet 50 from being twisted or slackened inadvertently, the sheet guide member 6 is used to guide the feeding of the sheet 50, and after that, an auxiliary work that the operator slightly presses with hand is added to the photocurable FRP. Since the sheet 50 is simply stuck on the surface of the repair-needed portion as it is, a certain quality and construction accuracy can be expected regardless of whether the operator's technical skill is skilled or not.

  Although the present invention has been described above based on the illustrated embodiment, the present invention is not limited to the above-described embodiment. It should be noted here that the present invention can be implemented in various modes as design changes, applications, and modifications as required by those skilled in the art without departing from the spirit and technical idea of the present invention.

DESCRIPTION OF SYMBOLS 1 Repairing / reinforcing work auxiliary device 2 Traveling base 20 Main shaft 21 Bogie 22 Support member 23 Joint member 3 Sheet roll support base 34 Rotating device (motor)
4 Sheet roll support member 40 Bearing body portion 41 Shaft portion 5 Photocurable fiber reinforced resin sheet roll 50 Photocurable fiber reinforced resin sheet 6 Sheet guide member 7 Concrete structure

Claims (7)

A repair / reinforcement auxiliary device that feeds out a photocurable fiber reinforced resin sheet that cures and adheres when exposed to ultraviolet rays toward the surface of the concrete structure that requires repair,
A traveling platform to be moved along the surface of the repaired portion of the concrete structure is composed of a main shaft and a plurality of carts that support at least both ends of the main shaft substantially horizontally, and the main shaft of the traveling platform is on the cart. It is supported by the support member so that the height can be adjusted in the vertical direction.
On the main shaft, a sheet roll support base configured to be rotatable around the main shaft is installed,
The sheet roll support base is provided with a rotating device that rotates the sheet roll support base around the main shaft, and a photocurable fiber reinforced resin sheet roll wound in a roll shape is attached to one end of the sheet roll support base Or, a removable sheet roll support member is installed,
A sheet guide member for guiding the feeding of the photocurable fiber reinforced resin sheet fed from the photocurable fiber reinforced resin sheet roll is attached to the sheet roll support member.
The traveling platform is moved to a place where the concrete structure needs to be repaired, the main shaft is positioned so as to be substantially parallel to the concrete surface, and the sheet roll support base and the sheet roll support member are rotated around the main shaft by the rotating device. The curable fiber reinforced resin sheet is fed out so as to be relatively parallel to the surface of the repair required part, and the light curable fiber reinforced resin sheet is guided by the sheet guide member and attached to the surface of the repair required part. Auxiliary equipment for repairing / reinforcing concrete structures, characterized by being used for reinforcement work.   The concrete structure according to claim 1, wherein the sheet roll support base rotatably installed on the main shaft is configured to be movable in a longitudinal direction of the main shaft and to be fixed at a use position. Auxiliary equipment for repair and reinforcement work. Both ends of the main shaft constituting the traveling platform are supported by a support member on the carriage via a joint member, and the height of the main shaft is adjusted by moving the joint member in the vertical direction with respect to the support member. Configured to be possible,
The auxiliary device for repairing / reinforcing a concrete structure according to claim 1 or 2, wherein the support member is configured to be capable of adjusting a support position in a length direction of the main shaft.   The sheet roll support member is mounted with a bearing main body part that is attached to and supported by one end of the sheet roll support base, and a photocurable fiber reinforced resin sheet roll that can be attached to or detached from the bearing main body part. The auxiliary device for repairing / reinforcing a concrete structure according to any one of claims 1 to 3, wherein the auxiliary device is composed of a shaft portion.   The sheet guide member attached to the sheet roll support member is configured to be able to protrude or retreat toward a repair-needed portion and to be concentric with the center of the photocurable fiber reinforced resin sheet roll. An auxiliary device for repairing / reinforcing a concrete structure according to any one of claims 1 to 4. Repair of a concrete structure according to the invention described in claims 1 to 5 above, a method for repairing and reinforcing a concrete structure to be performed using an auxiliary device for reinforcement work,
Moving the traveling platform and repairing the concrete structure, moving it to the reinforced location, repairing the concrete structure, positioning the surface of the reinforced location and the main shaft in a substantially parallel arrangement,
Attach the photocurable fiber reinforced resin sheet roll to the sheet roll support member, and make the photocurable fiber reinforced resin sheet from the same photocurable fiber reinforced resin sheet roll relatively parallel to the surface of the repair required part. A stage of advancement and advancement via a sheet guide member;
Affixing the photocurable fiber reinforced resin sheet to the surface of the repair-required portion is started, and the photocurable fiber reinforced fiber is reinforced while rotating the sheet roll support base and the sheet roll support member at a constant speed by a rotating device. A step of guiding the resin sheet with a sheet guide member and affixing the surface to the surface of the repair-required portion and advancing the work,
At the stage where the pasting step is performed to the end, once the light curable fiber reinforced resin sheet is stopped and cut to perform edge cutting;
Irradiating UV light to the photocurable fiber reinforced resin sheet constructed and adhered to the surface of the repair-needed portion as described above, and bonding,
A method for repairing and reinforcing a concrete structure, characterized in that the same process of affixing a photocurable fiber-reinforced resin sheet to the surface of a concrete structure where repair is required is repeated.   Using the auxiliary device for repairing and reinforcing a concrete structure according to the invention described in claims 1 to 5, the photocurable fiber reinforced resin sheet is fed out to a place where repair is necessary, and the photocurable fiber reinforced resin sheet is provided. Guide the sheet with the sheet guide member and paste it to the end, cut the photocurable fiber reinforced resin sheet, cut the edge, and when pasting to the facing part is finished, the traveling platform remains fixed In this state, the sheet roll support base is moved by one pitch in the longitudinal direction of the main shaft and moved to the next place where repair is necessary. Repeat the process of pasting and sticking to the main shaft within the range of the length of the spindle, and if exceeding the range, move the traveling platform to the next construction site and repeat the repair and reinforcement work repeatedly. Wherein the repair of concrete structures as set forth in claim 6, a reinforcing method.

Images