JPH08333716A - System for strengthening structure continuously with fiber reinforced plastics - Google Patents

Abstract

PURPOSE: To make not only long fiber reinforced plastics executable but the range of material selection of the fiber reinforced plastics sharply expandable, and simultaneously dispensing with the expense of a scaffold or the like as well as to make execution of works so as to be achievable in a short time. CONSTITUTION: Long cloth or the like 1a is fed to an FRP feeder 3, and this long cloth 1a is folded in two with a cloth bender 3a, while hardenable resin lb is continuously poured into in an inner part of the long cloth 1a folded double by a hardenable resin feeder 4, and the hardenable resin 1b is uniformly opened wide by a roll 3c as clipping a side face of the long cloth la with an end leak preventing belt 3b, thereby manufacturing long reinforced plastics 1. These fiber reinforced plastics 1 is directly stuck to the executed surface, or an extent of required length wound on a take-up reel 5a set to a winding frame 5b otherwise.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous FRP supply device and a construction method for continuously applying a long fiber-reinforced resin (hereinafter referred to as "FRP") to a structure for reinforcement. If the structure has a columnar shape such as a bridge pier, use FRP on the take-up reel.
The present invention relates to a method of winding up, setting the winding reel on the winding reel stand of the winding machine, and adhering the FRP while winding up. This hoist is a rotating machine that rotates around the hoist support frame, an arm with a construction surface surveying device such as an optical sensor (hereinafter referred to as "arm with a surveying device"), and a bridge pier on which the take-up reel support frame is set. Ring (hereinafter referred to as "rotating ring"), rotating ring drive, rotating ring support stand, rotating ring support stand stabilizing column,
The present invention relates to a construction machine composed of a rotary ring up / down actuator. Furthermore,
When applying a primer etc. to the construction surface, a spray gun can be attached to the arm equipped with the inspection device to achieve uniform application. The present invention also relates to a construction machine and a construction method in which the application of top-coat paint is the same.

[0002]

2. Description of the Related Art When FRP is applied to a conventional structure, a scaffold is assembled and a curable resin is applied to the applied surface, and then a fixed-length fiber cloth or the like (hereinafter referred to as "cloth or the like") is pressed and bonded. As for the seams of cloths and the like, a method in which a hardenable resin is applied on top of a cloth or the like which has already been applied and overlapped with each other, and discontinuous and not stable in strength, and a time-consuming process has been performed.

There is also a method of impregnating a fixed length cloth with a hardened resin in advance, but since the process is carried out at a factory or the like and carried to a construction site, curing progresses during transportation, resulting in insufficient adhesion. It was difficult to obtain stable strength.

Conventionally, columns such as bridge piers use regular length cloths and the like, so that it is not possible to endure the destruction by the force to push the columns outward by a strong force from the upper part or the shearing force.

[0005]

SUMMARY OF THE INVENTION In view of these circumstances, the present invention folds a long cloth or the like in two and holds the curable resin evenly at the construction site. It is an object of the present invention to provide a continuous FRP supply device and a construction method which can be attached while being expanded to the original width.

Further, when the structure is a pier or the like, a scaffold is not required by this hoisting machine, and it is an object of the invention to provide a construction machine and a construction method capable of performing a long FRP construction to painting easily and in a short time.

Therefore, a long cloth or the like can be used, and the range of choices such as the type of curable resin, the characteristics of the composite and the workability can be widened, and the structure reinforced by this method can be joined by the cloth or the like. It is an object of the present invention to provide a long FRP construction machine and a construction method capable of eliminating a partial weak point and obtaining a stable design strength.

[0008]

[Means for explaining issues]

The continuous FRP supply device of the present invention is such that a long cloth or the like is continuously folded in two, and a curable resin is continuously injected into a gap between the metering pump and the curable resin supply device with an automatic mixing device, and then the end. The curable resin is spread evenly by the roll while being clipped by the partial leak prevention belt, and continuously supplied to the construction surface of the structure. It is a continuous FRP supply device and a construction method in which FRP such as a two-fold resin-impregnated fiber cloth is spread to its original width immediately after construction and attached to the construction surface of the structure to continuously strengthen the structure with long FRP.

When the structure is a pillar such as a bridge pier, the long FRP supplied from the continuous FRP supply device is wound on a take-up reel and set on a take-up reel support stand of a hoist, This is a construction method in which a long FRP is adhered from the lower part while winding up the FRP. When performing the two-layer construction, it is possible to obtain more stable strength by reversing the rotation direction of the rotary ring and winding the first layer and the second layer so as to cross each other by the same method.

This hoist comprises a hoist support frame,
A construction machine consisting of a rotating ring that rotates around a bridge pier with an arm equipped with a geodetic device and a take-up reel support stand, a rotating ring drive machine, a rotating ring support stand, a rotating ring support stand stabilizing column, and a rotating ring vertical actuator. Is. The rotating ring and the rotating ring support stand can be divided, and the piers and other parts should be held and set in preparation for construction. The rising speed of the rotating ring, the rotating speed is the width of the long FRP, the number of FRP,
Program according to the thickness and shape of pillars.

Further, when a primer or the like is applied to the construction surface, a spray gun can be attached to the arm equipped with the inspection device to achieve uniform application. The same construction machine and construction method are used for applying top-coat paint.

Therefore, a long cloth or the like can be used, and the range of choices such as the characteristics of FRP such as physical properties due to the type of curable resin and the compatibility with fibers and the workability such as pot life and viscosity are widened. The structure reinforced by this method eliminates a partial weak point due to a bonding portion such as a cloth or an adhesion failure with the structure, and a stable design strength can be obtained.

Fiber materials for long cloths, mats, rovings, etc. include glass, carbon, aramid, polyester, acrylic, acetate, nylon, rayon, vinylin, boron, alumina, silicon carbide, ceramics, iron,
Copper, aluminum, brass, cotton, hemp, pulp, etc., which are used alone or in combination when forming a cloth or the like. However, the selection range is widened, although selection is made with due consideration of design strength and price, number of constructions, compatibility with curable resin used together, durability, etc.

A room temperature curable resin is preferable as the curable resin, and various types of epoxy, acrylic, vinyl ester, polyerter, urea, urethane and the like are used. These resins are similar to fibers in selecting

[0016]

The continuous FRP feeder of the above means can continuously feed FRP as it is long without cutting the long cloth or the like. By combining this continuous FRP feeder and this winding machine, the F of columnar structures such as piers can be
RP can be easily strengthened and stable FRP
A reinforced structure is obtained. Also, by setting the coating device on the winding machine, the primer and the top coat can be applied in a short time, so that a scaffold is not necessary for a series of operations, and it works economically effectively.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings. In FIG. 1, a long cloth or the like is made into FRP by a continuous FRP supply device, and a required area is wound on a winding reel by a winding machine. It is the whole figure which schematized the series of processes which wind up this FRP to the original width, and carry out adhesion construction by the winding machine which set the reel which wound up FRP.

First, as shown in FIG. 1, a long cloth or the like 1a
The wound cross reel 2a is attached to the cross reel mount 2b, the continuous cloth 1a is supplied to the continuous FRP supply device 3, and the long cloth 1a is folded in two by the cloth bending device 3a. Further, the curable resin 1b is continuously injected into the inside of the long cloth or the like 1a folded in two by the curable resin supply device 4, and the side surface of the long cloth or the like 1a is provided with the end leakage prevention belt 3
The curable resin 1b is evenly spread by the roll 3c while being clipped with b to continuously produce a long FRP1, and the long FRP1 is directly adhered to the construction surface 8a or set on the winding stand 5b. The required length is wound onto the take-up reel 5a. As shown in FIG. 2, on the take-up reel stand 6b installed on the rotary ring 6a supported by the rotating ring support stand stabilizing column 6j of the hoisting machine 6 which has been set in advance on the pier 8a which is the reinforcement target. , Set the take-up reel 5a wound with the long FRP1, and set the long FRP1
Is attached to the arm 6d with the geographic device through the FRP spreading device 6c, and the rotating ring 6a is lifted by the rotating ring up / down actuator 6f while rotating the rotating ring 6a with a constant torque by the rotating ring driving device 6e. At the construction start point, the long FRP 1 is spread, and the curable resin 1b injection surface is pressed and fixed to the construction surface 8b of the pier 8a or the like that is the object to be reinforced.
The construction surface 8b is sensed by the geodetic device 6g such as an optical sensor so as to follow the construction surface 8b of the pier 8a which is the strengthened body, and the long FRP 1 is bonded while being pressed by the pressure bonding roller 6h attached to the rotating ring 6a. . In the case of multi-layer construction, the winding direction is the reverse of the previous layer. If the spray gun 7a is attached to the arm 6d with the inspection device as shown in FIG. 3, the primer 1c and the top coat 1d can be applied along the applied surface 8b.

As shown in FIG. 1, details of the curable resin supply device 4 include a resin supply tank 4a, a curing agent supply tank 4b, respective metering pumps 4c and 4d, and an automatic mixing device 4e.

[0020]

INDUSTRIAL APPLICABILITY The continuous FRP supply device and the winding device according to the present invention not only allow construction of a long FRP, but also widen the range of material selection such that the material can be arbitrarily selected, and can be used for scaffolding and the like. It is an economically superior device because it does not require cost and can be installed in a short time.
Furthermore, this hoist has a wide range of uses such as being applicable to painting.

A long FR constructed by the method according to the present invention
P is an excellent construction method in terms of durability and reliability, as it has a stable design strength because the weak points due to joining are eliminated.

[Brief description of drawings]

FIG. 1 is an overall view of a continuous FRP supply device 3.

FIG. 2 is an overall view of the winding machine 6.

FIG. 3 is a construction diagram of a primer 1c in which a spray gun 7a is attached to an arm 6d with a geodetic device of the winding machine 6.

[Explanation of symbols]

Claims (4)

[Claims] 1. A long fiber cloth and / or mat, roving 1a, etc. are continuously folded in two, and a curable resin 1b is continuously injected into the gap from a metering pump 4c and a curable resin feeder 4 with an automatic mixing device 4e. Rear end leak prevention belt 3
The curable resin 1b is uniformly spread by the roll 3c while being clipped by b, and the fiber-reinforced resin 1 such as a resin-impregnated fiber cloth is continuously supplied to the construction surface 8b of the structure. Immediately after the construction, the fiber-reinforced resin 1 such as a two-fold resin-impregnated fiber cloth is spread to its original width, the resin supply surface is attached to the structure construction surface 8b and cured, and the structure is continuously reinforced with the fiber-reinforced resin 1. Continuous fiber reinforced resin supply device 3 and construction method. 2. When the construction surface 8b is a pillar or the like, the long fiber-reinforced resin 1 supplied from the continuous fiber-reinforced resin supply device 3 is wound on the winding reel 5a by the construction area. The take-up reel 5a is attached to the rotary ring 6 of the rotary winding machine 6.
A method in which the structure is continuously reinforced with the fiber-reinforced resin 1 by being attached to a and being pulled up while being rotated so as to give a constant torque to the long fiber-reinforced resin 1. 3. The hoisting machine 6 comprises a hoisting machine support frame 6k, an arm 6d having a construction surface surveying device 6g such as an optical sensor, a take-up reel support table 6b, and other rotating rings 6a which rotate around a bridge pier or the like. , A rotary ring driving machine 6e, a rotary ring support pedestal 6j, a rotary ring support pedestal stabilizing column 6i, and a rotary ring up / down actuator 6f. 4. When applying a primer or the like to the construction surface 8b, the spray gun 7a is attached to the arm 6d having a construction surface detecting device such as an optical sensor to automatically adjust the distance from the construction surface 8b to make it uniform. Can be applied to. The same construction machine and construction method for painting top-coat paints.