KR102143855B1 - Manhole repair and reinforcement using light curing - Google Patents

Abstract

The present invention relates to a method for repairing and reinforcing a manhole using light curing, which includes the following steps of: (S10) installing a frame in the shape of a pipe at one end of a stiffening tube for repair and reinforcement; (S20) arranging the stiffening tube for repair and reinforcement so that the frame is exposed to the manhole to be repaired and reinforced; (S30) installing a watertight cover on the frame in a state in which a light curing device is arranged in the stiffening tube for repair and reinforcement; (S40) expanding the stiffening tube for repair and reinforcement; (S50) stiffening the stiffening tube for repair and reinforcement which is expanded by using the light curing device; and (S60) removing the frame from the stiffening tube for repair and reinforcement. Therefore, the method for repairing and reinforcing a manhole using light curing can improve structural integrity.

Description

Manhole repair and reinforcement using light curing}

The present invention relates to a method of repairing and reinforcing old manholes using light curing.

In general, manholes are holes made to allow human access to the road surface, and installation places are applied in various ways, such as points where the thickness or direction of a pipe changes, starting points, and intersections.

These manholes are gradually deteriorated due to various causes such as continuous fatigue load caused by a vehicle traveling on the road, and problems such as cracking or subsidence occur due to such deterioration.

In order to repair such defective manholes, conventionally, a repair method of excavating the ground, removing the existing manhole, and then re-installing a new manhole has been widely used. It took a long time and became an obstacle to smooth traffic flow.

As an example of the prior art, in Korean Patent Registration No. 10-0621639, in the method of repairing manholes buried in a lower part of a road surface and made of a main body, a connection pipe, a flange, etc., the steps of removing a flange and a ladder at the upper part of the body; Installing a GRP pipe in the main body having connection holes perforated so as to face each other on both sides of the lower part; Waterproofing by placing mortar or concrete under the GRP pipe; Applying a resin to a liner having an extension part formed at the end of the tube shape, and inserting it through the connection hole of the GRP pipe and the connection pipe of the main body; Curing the liner with steam or hot water heat; Filling between the main body and the GRP pipe with mortar or resin; And it proposes a method of repairing and reinforcing a manhole using a GRP pipe, characterized in that consisting of a step of installing a flange, etc. on the main body and the upper portion of the GRP pipe and covering the lid to finish.

However, in the case of the above technology, there is a problem in that it is not possible to expect solid repair and reinforcement because lifting may occur between the GRP pipe for reinforcement and the inner periphery of the old manhole, and there is a problem that the ease of construction cannot be sufficiently expected.

Korean Patent Registration No. 10-0621639

The present invention has been devised to solve the above problems, and is to provide a manhole repair and reinforcement method capable of improving easy construction and structural integrity.

As a means to solve the above problem, the manhole repair and reinforcement method using the light curing of the present invention (hereinafter referred to as "the method of the present invention") is a step of installing a tubular frame at one end of the curing tube for repair and reinforcement. (S10); Disposing a curing tube for repair and reinforcement so that the frame is exposed in the manhole to be repaired and reinforced (S20); Installing a watertight cover on the frame while the light curing device is disposed inside the curing tube for repair and reinforcement (S30); Expanding the curing tube for repair and reinforcement (S40); Curing the expanded repair and reinforcement curing tube using a light curing device (S50); It characterized in that it includes; removing the frame from the curing tube for repair and reinforcement (S60).

As an example, a fastening jaw is formed at the inner periphery of the frame, and a watertight cover is installed on the frame by the fastening jaw in step S30.

As an example, a thread is formed on the upper part of the fastening jaw at the inner periphery of the frame, a water-tight ring is mounted on the rim of the water-tight cover, and the water-tight cover is placed by the fastening jaw in step S30, and a thread facing the thread It characterized in that the pressure ring formed on the outer periphery is rotationally coupled to the inner periphery of the frame to pressurize the water-tight ring.

As an example, the pressure ring is characterized in that a plurality of supports forming an inclined gradient in a centripetal direction and a fixing ring formed at an end of each support and having an open side surface are configured.

As an example, the watertight cover is characterized in that a flow hole through which an adjustment line connected to the light curing device passes is formed, and an air injection hole through which the air injection line is connected is formed.

As an example, the repair and reinforcement hardened tube includes an outer skin layer in contact with the inner periphery of the manhole; An adhesion layer in which glass fiber yarns are attached to the inner periphery while contacting the inner periphery of the outer skin layer; A glass fiber layer impregnated with an impregnating resin including a photocurable resin while in contact with the inner periphery of the adhesion layer; It characterized in that it includes; a protective layer detachable from the inner periphery of the glass fiber layer.

As an example, in the glass fiber layer, the impregnating resin includes potassium hydrogen carbonate in addition to the photocurable resin.

As described above, the construction method of the present invention has the advantage of being able to perform maintenance and reinforcement in an old manhole, which is easy to install and has excellent durability and durability.

In addition, the method of the present invention improves resistance to earthquakes by forming a reinforcing layer made of glass fibers in multiple layers, and can control tearing, cracking, and twisting of the cured tube that may occur during the construction and curing process. There is an advantage.

1 is a block diagram showing the construction method of the present invention,
2 is a perspective view showing a state in which a frame is installed at one end of a hardened tube for repair and reinforcement in the construction method of the present invention,
3 and 4 are perspective and side cross-sectional views showing a state in which a repair and reinforcement hardening tube is disposed in a manhole to be repaired and reinforced,
5 is a view showing an embodiment of a frame, a water seal, etc. applied to the construction method of the present invention,
6 is a view showing another embodiment of a watertight cover applied to the construction method of the present invention,
7 is a cross-sectional view showing a repair and reinforcement hardened tube used in the construction method of the present invention,
8 is a cross-sectional view showing an embodiment of the glass fiber layer in FIG. 7.

In describing the present invention, terms or words used in the present specification and claims are the present invention based on the principle that the inventor can appropriately define the concept of terms in order to describe his or her invention in the best way. It must be interpreted as a meaning and concept consistent with the technical idea of

The method of the present invention includes the steps of installing a tubular frame at one end of the hardened tube for repair and reinforcement as shown in FIG. 1 (S10); Disposing a curing tube for repair and reinforcement so that the frame is exposed in the manhole to be repaired and reinforced (S20); Installing a watertight cover on the frame while the light curing device is disposed inside the curing tube for repair and reinforcement (S30); Expanding the curing tube for repair and reinforcement (S40); Curing the expanded repair and reinforcement curing tube using a light curing device (S50); It characterized in that it includes; removing the frame from the curing tube for repair and reinforcement (S60).

First, the method of the present invention has a step (S10) of installing a tubular frame 8 at one end of the hardened tube 1 for repair and reinforcement as shown in FIG. 2. The tubular frame 8 is mounted on one end of the repair/reinforcement hardening tube 1, and through the frame 8 in a post process, the photocuring device 7 is placed inside the repair/reinforcement hardening tube 1 It corresponds to a configuration for smoothly performing subsequent processes, such as enshrining ).

The repair/reinforcement hardening tube 1 includes an outer skin layer 2 in contact with the inner periphery of the old manhole as shown in FIGS. 7 and 8; An adhesion layer (4) in which glass fiber yarns are attached to the inner periphery while contacting the outer periphery of the outer layer (2); A glass fiber layer (5) impregnated with an impregnating resin including a photocurable resin while in contact with the inner periphery of the adhesion layer (4); It characterized in that it comprises a; a protective layer (6) detachable from the inner periphery of the glass fiber layer (5).

In other words, the curing tube 1 for repair and reinforcement not only enables repair and reinforcement with excellent watertightness and stiffness in the manhole where deterioration occurs as the glass fiber layer 5 impregnated with photocurable resin is cured by photocuring. By allowing a multi-layered structure to be formed, the resistance to earthquakes can also be improved.

The outer skin layer 2 is configured to directly contact the inner periphery of the old manhole, and a material that maintains stable strength is used. In addition, the outer skin layer 2 is to be in contact with the inner periphery of the old manhole due to expansion during construction, and to induce tearing on one side during expansion.

In addition, the outer skin layer 2 is made of a material that blocks ultraviolet rays, and after the tube 1 of the present invention is installed in an old manhole, the light irradiated during the light irradiation process is prevented from leaking out to the outside of the tube 1, so that the light irradiation efficiency It is to increase the product, and to prevent the photocurable resin from reacting in advance by ultraviolet rays caused by sunlight when storing and transporting the tube 1 as a product.

The material of the outer skin layer 2 may be a PVC material reinforced with a grid rather than a one-sided material to prevent tearing, cracking, warping, and improvement of traction during installation and installation of stable strength.

The adhesion layer 4 is not shown in the drawing while in contact with the inner periphery of the outer skin layer 2, but the glass fiber yarn is attached to the inner periphery, and is in contact with the glass fiber layer 5 on the body of the adhesion layer made of a material having excellent expandability. In the form of a plurality of fiberglass yarns attached to the surface, expansion is ensured during construction by the body of the adhesive layer made of a material with excellent expandability, and the adhesion to the glass fiber layer 5 is increased by the glass fiber thread attached to one surface. The cracks that may occur in the body of the adhesion layer during expansion are controlled by the crosslinking action of the glass fiber yarn to ensure watertightness.

The material of the attachment layer body should be made of an elastic material so as to secure expandability. For example, a material in which HDPE and PA are fused may be used.

The glass fiber layer 5 corresponds to a configuration in which an impregnating resin including a photocurable resin is impregnated while contacting the inner periphery of the adhesive layer 4 to be cured by light irradiation.

In the curing process by light irradiation, the impregnating resin is cured while filling the gap of the glass fiber layer 5 so that the watertightness and rigidity are doubled.

In the case of the photocurable resin, a variety of known materials are also present, so a description thereof will be omitted.

The glass fiber layer 4 is formed by weaving of glass fibers, and the product is manufactured in a state in which an impregnating resin is impregnated as mentioned above. That is, the impregnating resin is impregnated in the gap between the glass fiber yarns constituting the glass fiber layer 5.

The glass fiber yarn has some degree of translucency in the fiber itself, and the gap between the glass fibers is formed by weaving of the glass fiber, so that ultraviolet rays by light irradiation are sufficiently transmitted to the impregnated resin to be cured.

In particular, in the present invention, the glass fiber layer 4 is composed of three layers as shown in FIG. 8 to improve impact resistance to improve earthquake resistance, while increasing the smoothness of the exposed surface, and the adhesion layer 4, etc. Strengthen the adhesion of the product to improve durability.

The glass fiber layer 5 is not shown in the drawing, but the inner glass fiber layer 51 in a form in which the cut glass fiber yarns are attached to the surface in contact with the protective layer 6 while contacting the protective layer 6 in multiple directions. ); An intermediate glass fiber layer 52 in which the glass fiber yarns are woven so as to be orthogonal while in contact with the inner glass fiber layer 51; And an outer glass fiber layer 53 in which a larger gap is formed than the intermediate glass fiber layer beam 52 while being in contact with the adhesion layer 4.

First of all, the inner glass fiber layer 51 is configured to form an exposed surface in an aging pipe, and although not shown in the drawing, the inner glass fiber layer body formed by weaving of glass fiber yarn, etc., and the surface exposed from the inner glass fiber layer body are multi-directional. It is composed of cut glass fiber yarn attached to it.

The reason for configuring the cut glass fiber yarn attached in multiple directions to the surface exposed from the inner glass fiber layer body is that after curing by light irradiation, the exposed surface of the inner glass fiber layer 51 is a surface layer made of impregnated resin. This is formed and the surface layer by the impregnating resin is cured while the glass fiber yarn is impregnated. This is to control the cracks generated in the curing process of the surface layer by the composition of the glass fiber yarn cut in such a multi-direction.

Cracks occurring in the surface layer may lower the smoothness and cause corrosion due to accumulation of foreign substances, and may be the starting point of cracks that may occur throughout the tube 1. In the present invention, the exposed surface of the inner glass fiber layer body This is to control the shrinkage cracks that may occur in multiple directions by allowing the cut fiberglass yarn to adhere in multiple directions.

The intermediate glass fiber layer 52 is a form in which the glass fiber yarns are woven so as to be orthogonal while in contact with the inner glass fiber layer 51. Although not shown in the drawing, the intermediate fiberglass layer 52 is woven so that the horizontal yarns and the vertical yarns are orthogonal to ensure strength and rigidity. will be.

The outer fiberglass layer 53 is in contact with the adhesion layer 4 so that a larger gap is formed than that of the intermediate fiberglass layer 52 so that the outer fiberglass layer 53 and the adhesion layer 4 by photocurable resin are formed. This is to make the attachment more solid.

The outer glass fiber layer 53 is also not shown in the drawing, but the horizontal yarn and the vertical yarn are woven so as to be orthogonal to each other, but the gap formed by the horizontal yarn and the vertical yarn is formed to be large, so that the photocurable resin and the adhesive layer (4) And, by increasing the adhesion area between the intermediate glass fiber layers 52 so that the interlayers are firmly attached, it is to prevent lifting between the glass fiber layer 5 and the adhesion layer 4.

In addition, the present invention presents an example in which potassium hydrogen carbonate is included in the glass fiber layer 5 in addition to the photocurable resin in the impregnated resin.

In the case of photocurable resins, shrinkage occurs during the curing process due to photocuring, and cracks are generated due to such shrinkage. That is, temperature cracking occurs due to the heat of curing. This temperature cracking is controlled to some extent by the crosslinking action of the glass fiber yarns mentioned above. However, when excessive addition of glass fiber yarns to control cracking through the crosslinking action, such as agglomeration between fibers As a problem, there is a problem such as partial strength reduction.

Accordingly, in the present invention, potassium hydrogen carbonate is blended in addition to the photocurable resin in the impregnating resin. The potassium hydrogencarbonate absorbs part of the curing heat when the curing heat is generated, thereby lowering the entire curing heat, thereby controlling the temperature cracking caused by the curing heat.

Preferably, it is reasonable to mix 1 to 5 parts by weight of potassium hydrogen carbonate with respect to 100 parts by weight of the photocurable resin.

The protective layer 6 is detachable to the inner periphery of the glass fiber layer 5 and is made of a transparent material.

The reason why the protective layer 6 is further configured in this way is not shown in the drawing, but the conventional light irradiation device 7 does not have a drawing number, but it allows light irradiation while moving. In order to solve problems such as damage to the curing tube 1, the protective layer 6 is configured on the inner periphery of the glass fiber layer 5 so as to be detachable.

In this way, the curing tube 1 is protected during the curing process by light irradiation, and the protective layer 6 is removed after curing.

The protective layer 6 is made of a transparent material to prevent the light irradiation from being transmitted to the inside thereof, and the detachable structure can be variously formed. It is protected by removing the taping after curing while fixing both ends by taping. This is to allow the layer 6 to be detached.

Next, as shown in FIGS. 3 and 4, a step (S20) of disposing the curing tube 1 for repair and reinforcement so that the frame 8 is exposed in the manhole M to be repaired and reinforced is performed. A plurality of locking holes 81 are formed in the frame 8 so that the frame 8 is exposed to the manhole M to be repaired and reinforced by attaching a known means such as a crane to the locking hole 81 It is to arrange the reinforcing hardening tube (1) and perform the subsequent process.

In this step (S20), foreign substances must be removed from the inner periphery of the manhole to be repaired and reinforced before disposing the hardened tube 1 for repair and reinforcement. Various foreign substances such as soil, organic matter, and metal (including rust) are deposited on the inner periphery of the manhole. These foreign substances are removed first to control jamming by foreign substances in the arrangement of the hardening tube (1), and the hardening tube ( The occurrence of defects in 1) should be controlled and construction (placement) should be made easy.

It is to remove foreign substances such as soil deposited in the manhole by a physical method, for example, a rust removal device, scraper, brush, etc. from the manhole to be repaired and reinforced.

Next, a step (S30) of installing a watertight cover 9 on the frame 8 is carried out while the light curing device 7 is disposed inside the curing tube 1 for repair and reinforcement.

The water-tight cover 9 has a flow hole 91 through which the adjustment line 71 connected to the light curing device 7 passes, as shown in FIGS. 3 and 4, and an air injection hole to which the air injection line is connected ( 92) is formed, and a water milling ring 93 is formed on the rim of the water seal cover 9.

Each of the flow hole 91 and the air injection hole 92 is provided with a packing means so as to ensure watertightness even in the insertion and flow of the adjustment line 71 and the air injection line, respectively.

Although not shown in the drawing through the air injection line, air is injected into the repair/reinforcement curing tube (1) through an external air injection means, so that the repair and reinforcement curing tube (1) is inserted into a manhole (M). By expanding from the inside, the inner periphery of the manhole (M) and the hardened tube (1) for repair and reinforcement are in contact.

In this step (S30), in order to mount the watertight cover 9 to the frame 8 to ensure easy and watertightness, as shown in FIG. 5, a fastening jaw 82 is formed on the inner periphery of the frame 8 In step S30, the watertight cover 9 is installed on the frame 8 by the fastening jaws 82.

In addition, a screw thread 83 is formed on the upper portion of the fastening jaw 82 at the inner periphery of the frame 8, and a pressure ring 10 having a screw thread 11 facing the screw thread 83 is formed at the outer periphery. To be further configured, the watertight cover 9 is placed by the fastening jaw 82 in step S30, and the pressure ring 93 is pressed in the watertight cover 9 as shown in the drawing ( 10) is rotated to the inner periphery of the frame 8 so that the watertight cover 9 is securely fixed to the frame 8 while ensuring watertightness. By being configured in this way, it is possible to prevent a decrease in the expansion efficiency due to lifting of the watertight cover 9 during the expansion work of the hardened tube 1 for repair and reinforcement through the air injection line.

In addition, as shown in FIG. 6, the pressure ring 10 includes a plurality of supports 12 forming an inclined gradient in the centripetal direction, and a fixing ring having an opening 131 at the side and formed at the ends of each support 12. 13) is presented as an example.

By being configured in this way, the pressure ring 10 ensures that the watertight cover 9 is secured in the frame 8 and is firmly fixed, and at the same time, the position of the adjustment line 71 is adjusted from the top in the subsequent process. It is held so that the light irradiation by the light curing device 7 is made uniformly.

In more detail, since the light irradiation process is performed in the expanded repair/reinforcement hardening tube 1, the position of the adjustment line 71 is fixed when the adjustment line 71 flows up and down. Problems such as non-uniform irradiation due to the tilt of the photocuring device 7 and leakage through the flow hole 91 due to the inclination of the adjustment line 71 are controlled by holding a spaced apart from the flow hole 91 To be.

The adjustment line 71 is to be mounted on the fixing ring 13 through the opening 131 after the pressure ring 10 is fastened.

Then, it has a step (S40) of expanding the repair and reinforcement curing tube (1). The repair and reinforcement hardening tube 1 is expanded through an air injection line installed in the air injection hole 92. It is to expand by injecting compressed air into the arranged hardening tube (1).

Then, a step (S50) of curing the expanded repair/reinforcement curing tube 1 using the photocuring device 7 is performed. As mentioned above, by adjusting the adjustment line 71 up and down from the outside, the entire repair and reinforcement curing tube 1 expanded through the up and down flow of the light curing device 7 is irradiated with light. It is to allow photocuring to occur.

When photo-curing is performed on the expanded repair/reinforcement curing tube (1), a finishing step (S60) is performed. As mentioned above, the protective layer 6 is removed from the curing tube 1 and repaired. ·The photocuring device 7 installed inside the reinforcing hardening tube 1 is disassembled together with the watertight cover 9, and the frame 8 is dismantled from the repairing/reinforcing hardening tube 1 It is to ensure that the finishing work is done.

As described above, although the present invention has been described by a limited embodiment and drawings, the present invention is not limited to the above embodiment, as well as from the above description by a person of ordinary skill in the field to which the present invention belongs. It goes without saying that various modifications and variations can be made.

1: tube of the present invention 2: outer skin layer
3: outer skin finishing layer 4: adhesion layer
5: glass fiber layer 6: protective layer
7: light curing device 8: frame
9: water seal 10: pressure ring

Claims (7)

Installing a tubular frame at one end of the repair and reinforcement curing tube (S10);
Disposing a curing tube for repair and reinforcement so that the frame is exposed in the manhole to be repaired and reinforced (S20);
Installing a watertight cover on the frame while the light curing device is disposed inside the curing tube for repair and reinforcement (S30);
Expanding the curing tube for repair and reinforcement (S40);
Curing the expanded repair and reinforcement curing tube using a light curing device (S50); And
Including; removing the frame from the curing tube for repair and reinforcement (S60),
The hardening tube for repair and reinforcement,
An outer skin layer in contact with the inner periphery of the manhole; An adhesion layer in which glass fiber yarns are attached to the inner periphery while contacting the inner periphery of the outer skin layer; A glass fiber layer impregnated with an impregnating resin including a photocurable resin while in contact with the inner periphery of the adhesion layer; And a protective layer detachable from the inner periphery of the glass fiber layer; including, wherein 1 to 5 parts by weight of potassium hydrogen carbonate are further blended with 1 to 5 parts by weight of potassium hydrogen carbonate relative to 100 parts by weight of the photo-curing resin in the impregnating resin, Act to absorb heat to control temperature cracking,
A fastening jaw is formed on the inner circumference of the frame, and a watertight cover is installed on the frame by the fastening jaw in step S30, and a thread is formed on the top of the fastening jaw on the inner circumference of the frame, and Milling is mounted, the watertight cover is placed by the fastening jaw in step S30, and a pressure ring having a thread facing the screw thread formed on the outer periphery is rotationally coupled to the inner periphery of the frame to pressurize the watertight ring. Manhole repair and reinforcement method using light hardening as a feature.
delete delete The method of claim 1,
The pressure ring is a manhole repair and reinforcement method using light curing, characterized in that a plurality of supports forming an inclined gradient in a centripetal direction and a fixing ring formed at an end of each support and having an open side surface.
The method of claim 1,
Manhole repair and reinforcement method using light curing, characterized in that a flow hole through which the adjustment line connected to the light curing device passes through the watertight cover is formed, and an air injection hole through which the air injection line is connected is formed. delete delete

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