KR200335572Y1 - Crack repair apparatus of concrete structure - Google Patents

Abstract

The present invention relates to a crack repair device of a concrete structure, for this purpose the present invention is a plurality of cover plate member 10 which is bolted along the crack surface of the concrete structure; An L-shaped tube member 20 having one end screwed to the cover plate member 10; One end is screwed with one end of the L-shaped pipe member 20, and the other end is T-shaped pipe member 30 screwed to the cover plate member 10; Main tube member 40, one end of which is screwed to the T-shaped tube member 30: and one end of the T-shaped supply pipe 51 is screwed with one end formed with a spiral on the outer peripheral surface of the main tube member 40 It is provided, the supply pipe 51 is connected to the repair solution supply means 52 is provided with a repair solution supply member 50 for supplying the repair solution at a predetermined pressure bar while allowing a faster repair solution supply and filling can be made It is characterized in that the repair solution is supplied using the repair solution supply means 50 at one place for a plurality of repair solution supply sites, thereby providing convenience of easy installation and dismantling.

Description

Crack repair apparatus of concrete structure

The present invention relates to a crack repair device for a concrete structure, in particular, crack repair of a concrete structure to improve the efficiency of the work by repairing the cracks occurring in the walls of the concrete structure, such as filling the repair liquid more quickly and economically Relates to a device.

In general, the concrete structure is cracked due to various causes over time after the construction. Cracks generated in such concrete structures may cause fatal insufficiency of the structure's safety in severe cases, so the crack repair work may be performed at some time depending on the crack condition.

In other words, if the crack state of the concrete structure is left as it is, the crack gradually increases over time, and the air supply field causes serious failure in the safety of the concrete structure, resulting in disastrous events leading to collapse.

In order to prevent such accidents, the crack repair of a concrete structure is usually performed by injecting a crack repair liquid into the cracked part. The general method of repairing is for hydration foaming in the voids or cracked parts of the structure that are apparently leaking. It is made by a method of injection-filling a water-based injector, which is mainly made of a polyurethane polymer, an epoxy or a cement mixed with an expanding agent.

As a method of injecting a repair solution to repair such a crack, a method of using an injector for injecting a repair solution at low pressure using a building syringe and a packer using a high pressure packer are mainly known.

The method of using the injector is to use a syringe-shaped injector to fill the cracks of the concrete structure 1, as shown in Figure 1, the injector is again pressed plate (2), casing (3) and the piston rod ( 4) and the elastic means (5), and the concrete cracks are firmly fixed to the pressing plate (2) at the distal end, and the water is fixed in the casing (3) filled with a certain amount of the repair liquid. The piston rod 4 is forcibly slid from the rear by a restoring elastic force so that a certain amount of the repair liquid is drawn out from the end connected to the pressing plate 2 of the tip of the casing 3 for a predetermined time. To make it possible.

In the method using a packer, first, an installation hole is formed in the crack generated in the concrete structure, and the packer is inserted into this hole to fix it firmly, and then the repair solution is connected to the packer in a short time at a high pressure. To be injected.

As described above, the method of using the injector injects the repair liquid only by the low pressure by the elastic means, which not only takes a long injection time, but also causes the phenomenon that the repair liquid is cured during filling, thereby decreasing the filling efficiency. Therefore, there is a problem that causes environmental pollution due to the generation of waste materials immediately after construction.

And the method of using the packer is a hole that is too large during the drilling operation for inserting the packer, when the deep drilling into the structure is in contact with the reinforcing steel or electric pipes embedded in the structure and damages these buried materials.

On the other hand, in order to improve the problem that the working speed of the repair liquid filling using the injector is too late, the applicant has already proposed a patent application No. 2003-0018311 (name: crack repair device of concrete structure).

In other words, as shown in Fig. 2, the rectangular cover plate 6 having fastening holes formed at both ends along the crack surface of the concrete structure 1 is bolted in the elected draft, and the repair liquid is filled in the center of the cover plate 6. Check valve (6a) to intermittently be provided to the integral, between the cracked portion of the concrete structure (1) and the cover plate (6) is in close contact with the elastic cushion member 7 is tightly inserted into the leak of the repair liquid To prevent it.

In such a configuration, the check valve 6a can be filled with a maintenance liquid for a required time by connecting a conventional syringe-shaped injector or a high pressure pump nozzle, so that a uniform maintenance liquid can be filled without leaking at any pressure. do.

In addition, the cover plate 6, once used, can be reused, thus enabling economical construction and fast repair liquid filling using a high-pressure infusion pump, thereby greatly reducing work time.

However, all the injectors connected to the check valves 6a through the design of the first application are disposable, and in particular, when the construction position is difficult to work at high positions or difficult to work, the injectors are connected to the check valves 6a one by one There is a problem that a very cumbersome and difficult task is required to separate these multiple injectors one by one immediately after filling is completed.

In addition, each of the check valve (6a) is filled with a maintenance liquid, each must be provided with a single injector, so the burden of the operation cost is large, in particular, there is a problem that adds to the environmental pollution by generating a large amount of waste materials.

Therefore, the present invention is designed to solve the above-mentioned problems of the prior art, and the present invention is connected to the repair liquid inlet of the cover plate member fixed to the crack portion of the concrete structure at the same time while a plurality of cracks by one high-pressure pump and cylinder The main purpose is to provide a crack repairing device for concrete structures that can be repaired more easily and quickly by allowing the site to be repaired in the city, thereby reducing the construction period and economical cost savings.

In addition, the present invention has another object to achieve an environmental improvement by suppressing the use of the disposable device required for the operation to the maximum.

1 is a cross-sectional view showing a state of filling liquid using a conventional injector,

Figure 2 is a use state showing an example of applying a configuration improved the conventional cover plate,

3 is an exploded perspective view showing a crack repair apparatus of the present invention,

4 is a side cross-sectional view of a cover plate member according to the present invention;

Figure 5 is a side cross-sectional view showing an L-shaped tube member of the present invention,

Figure 6 is a side cross-sectional view showing a T-shaped tube member of the present invention,

Figure 7 is a side cross-sectional view showing the main tube member of the present invention,

8 is an exemplary view showing a repair liquid supply member of the present invention;

9 is a use state showing the assembly configuration according to the present invention.

Explanation of symbols on the main parts of the drawings

10 cover plate member 11 fastening hole

20: L type pipe member 30: T type pipe member

40: main pipe member 50: maintenance liquid supply member

21, 31, 41, 51a: tightening nut 22, 32, 42, 51b: fitting

51 supply pipe 52 repair means supply means

52a: pump 52b: injector

In order to achieve the above object, the present invention is bolted while a plurality of consecutively arranged along the crack surface of the concrete structure, one side cover plate member to protrude a tubular coupling portion formed with a spiral on the outer peripheral surface of the end and ; One end is rotatably provided with a tightening nut screwed to the engaging portion of the cover plate member while the end surface is tapered to form a fitting portion so as to be closely coupled to the engaging portion, and the other end has a spiral on the outer peripheral surface of the end portion. L-shaped tube member to be formed; At one end, a tightening nut is rotatably provided so as to be screwed tightly with one end of the spiral formed member of the L-shaped pipe member, while the end face has a tapered outer peripheral surface to form a fitting portion, and the other end has a spiral formed at the outer peripheral surface of the end portion. , The branch pipe is integrally formed in the direction perpendicular to both ends, but the end of the branch pipe is rotatably provided with a tightening nut so as to be tightly screwed to the engaging portion of the cover plate member. A T-shaped tube member which is tapered to form a fitting portion; At one end, a tightening nut is rotatably provided so as to be tightly screwed with the other end of which the spiral is formed on the outer circumferential surface of the T-shaped tube member, and the outer end surface is tapered on the end surface to form a fitting portion, and the other end is formed with a spiral on the outer circumferential surface of the end portion. The main pipe member made of a predetermined length to: and one end is provided with a tightening nut to be screwed with one end formed with a spiral on the outer peripheral surface of the main tube member while the end surface is provided with a supply pipe to form a fitting portion so that the outer peripheral surface is tapered, The supply pipe is connected to a repair liquid supply means and is provided as a repair liquid supply member for supplying the repair liquid at a predetermined pressure.

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

Figure 3 is an exploded perspective view showing a crack repair apparatus according to the present invention.

The present invention is largely composed of a cover plate member 10, L-shaped tube member 20, T-shaped tube member 30, the main tube member 40 and the repair liquid supply member (50).

The cover plate member 10 has a predetermined diameter or length and is composed of a rigid material that covers the crack surface from the outside while a plurality of the plurality is continuously arranged along the crack surface of the concrete structure to be repaired. A metal plate such as a copper plate or a synthetic resin is used. In particular, the cover plate member 10 may be formed in a circular flat plate, but may be formed in a rectangular shape as in the original application of the present applicant, and may cover the cracked portion in such a manner that one end portions adjacent to each other are connected to each other. .

The cover plate member 10 has a plurality of fastening holes 11 to be firmly fastened by fastening means, such as bolts, to the concrete structure at both end portions or outer peripheral ends thereof, and one side, in particular, a surface in contact with the cracked surface. On the opposite side of the tubular coupling portion 12 as shown in Figure 4 to be integrally formed, but the outer peripheral surface of the end to form a spiral, and the hole 13 through which the repair liquid flows horizontally through Shape.

In addition, the other side surface corresponding to one side on which the coupling part 12 of the cover plate member 10 is formed, and the repair liquid leakage preventing jaw 14 is formed in multiple layers while expanding the diameter based on the hole 13 formed to flow the repair liquid. To form.

The L-shaped pipe member 20 is a pipe to allow the liquid to flow by forming the shape of the "L" shape as shown in Figure 5, one end outer peripheral surface of the coupling portion 12 in the cover plate member 10 The fastening nut 21 which is screwed to the spiral formed in this is rotatably fitted, and the other end is formed so that a spiral may be formed in the outer peripheral surface.

One end that is screwed with the engaging portion 12 of the cover plate member 10 provided with the tightening nut 21 of the L-shaped tubular member 20 is intimately connected to the hole 13 through which the repair liquid of the engaging portion 12 flows. The fitting portion 22 is formed to have a tapered shape so that the outer circumferential surface thereof can be inserted, and the seal ring 23 is fitted to the outer circumferential surface of the fitting portion 22.

The T-shaped tube member 30 is a pipe forming a “T” shape as shown in FIG. 6, and the tightening nut 31 is tightly screwed to one end with a spiral end of the L-shaped tube member 20 at one end thereof. Is rotatably provided, the end surface of the one end portion of the outer peripheral surface is tapered to form a fitting portion 32, the other end corresponding to the spiral is formed on the outer peripheral surface. And the fastening nut 31 and the fitting part 32 of one end part are formed also in the end part of the branch pipe 34 formed in the direction orthogonal between these both ends.

In addition, the seal ring 33 is fitted to the outer circumferential surface of each fitting portion 32 formed at the end portion of the T-shaped pipe member 30.

The main pipe member 40 is configured as a constant length as shown in Figure 7, while at one end is provided with a tightening nut 41 as in the L-shaped pipe member 20 or T-shaped pipe member 30 The outer peripheral surface is tapered to form a fitting portion 42, the outer peripheral surface of the fitting portion 42 is to be coupled to the seal ring 43, the outer peripheral surface of the other end is configured to form a spiral.

The repair liquid supply member 50 is configured such that the repair liquid is forcibly supplied by having one end connected to a spirally formed end of the main pipe member 40. The repair liquid supply member 50 is largely T-shaped as shown in FIG. Bar T-shaped supply pipe 51, which is configured to serve as supply pipe 51 and repair liquid supply means 52, is a fitting portion in which the outer peripheral surface is tapered together with a tightening nut 51a at the tip portion connected to the main pipe member 40. The seal ring 51c is fitted to the outer circumferential surface of the fitting portion 51b while the 51b is formed.

As the repair liquid supply means 52 provided with the T-shaped supply pipe 51, there is a pump 52a for supplying the repair liquid at high pressure first, and there is an injector 52b for gradually supplying the repair liquid at low pressure.

That is, one end of the T-shaped supply pipe 51 is connected to the main pipe member 40, the other end is connected to the pump 52a, and the other end is connected to the injector 52b.

On the other hand, in the above-described configuration, the main pipe member 40 is equipped with a check valve 44 for preventing the back flow of the repair liquid at one end thereof, and in particular, the front end of the pump 52a and the injector 52b of the repair liquid supply member 50. Most preferably, a check valve (not shown) is also mounted to the side T-shaped supply pipe 51.

In addition, it is also preferable that a cushioning member such as rubber having elasticity is inserted into one side of the cover plate member 10 which is in contact with the crack surface of the present invention.

Repair work using the concrete crack repair device according to this configuration is performed as follows.

Once cracks occur in the concrete structure, the cover plate member 10 is firmly coupled along the cracked portion of the concrete structure 60 at regular intervals.

That is, a plurality of cover plate members 10 are fixed at regular intervals, and then the cover plate members 10 are connected to each other by using the L-shaped pipe member 20 and the T-shaped pipe member 30.

More specifically, as shown in FIG. 9, the fastening nuts 21 and 31 of the L-shaped pipe member 20 and the T-shaped pipe member 30 are coupled to the coupling portion 12 of each cover plate member 10. The fastening nut 31 of the T-shaped pipe member 30 is screwed to the end of the L-shaped pipe member 20 so as to be firmly connected to each other.

At this time, the fitting portions 22 and 32 when the screw is tightened by the tightening nuts 21 and 31 closely contact the one end of the coupling portion 12 and the L-shaped tube member 20 of the cover plate member 10. While being inserted while being in close contact with the seal ring 23, 33 provided in particular as the outer circumferential surface of the fitting portion (22) 32 to be possible.

Thereafter, while the cover plate members 10 are attached at regular intervals along the length of the cracked portion, the cover plate members 10 are connected as the T-shaped tube members 30, and these T-shaped tube members 30 are also fastened to each other. It is connected by being firmly coupled by the nut (32).

In this manner, the cracks are connected to each other using a plurality of cover plate members 10, L-shaped pipe members 20, and T-shaped pipe members 30, and then the T-shaped pipe members 30 positioned at the far end. After the main pipe member 40 is connected to the other end of the main pipe member 40, the repair liquid supply member 50 is connected to prepare for repair work.

Therefore, a plurality of cover plate members 10, one L-shaped pipe member 20, and a plurality of cover plate members 10 lack one of the number of T-shaped pipe members 30 and one in the crack portion having a predetermined length. The main pipe member 40 and the repair liquid supply member 50 is made, the repair liquid supplied at a predetermined pressure from the repair liquid supply member 50 is each T-shaped pipe member 30 through the main pipe member 40 And it is supplied to each cover plate member 10 via the L-shaped pipe member 20 is to fill the repair solution to the cracked portion to which each cover plate member 10 is attached.

On the other hand, once the repair liquid is filled to the cracked portion to some extent, backflow is prevented by the check valve 42 mounted on the main pipe member 40, so the repair liquid supplied once gradually fills the cracked portion even if the supply is not continued. .

At this time, in the repair liquid supply member 50, the repair liquid is supplied at a high pressure by the pump 5a, but is gradually supplied by a minute amount through the injector 52b on one side immediately after the supply through the pump 52a is finished.

When the filling of the repair liquid is completed by the repair liquid supply member 50, the predetermined curing time is waited, and then the fastening means that fixes the cover plate member 10 to the crack surface through the fastening hole 11 of the cover plate member 10 is released. The cover plate member 10 is separated from the crack surface.

When the cover plate member 10 is separated, the water supply member 50 is separated from the main pipe member 40, and then the L-shaped pipe member 20 and the T-shaped pipe member 30 coupled to the cover plate member 10. And the main pipe member 40 is separated and discarded.

As described above, the present invention allows the repair solution to be filled in a plurality of cover plate members 10 at the same time by the repair solution supply member 50, thereby allowing a faster repair solution to be filled, thereby significantly reducing the work time. .

In particular, the present invention is not required for each injector in the cover plate member 10 as before, so that more economical work can be done while minimizing the use of disposable injectors.

As described above, the present invention simply attaches a plurality of cover plate members 10 at regular intervals along the cracked portion of the concrete structure 50 to cover the cracked portions, but these cover plate members 10 are L-shaped pipe members. 20 and the T-shaped tube member 30 to be connected to each other, so that the main tube member 40 and the maintenance liquid supply member 50 is connected to the most T-side tube member 30 of these connection configurations. Repair liquid supply member 50 to be forcibly supplied to the repair liquid by the pump to allow a faster repair liquid supply and filling while the repair liquid supply means 50 at one place for a plurality of repair liquid supply site The supply is characterized by providing the convenience of work that is easy to install and dismantle.

In particular, the present invention does not need to provide an injector to each cover plate member 10 individually, it provides a very economic advantage that can significantly reduce the operating cost while significantly reducing the required amount of the injector provided for single use.

Claims (5)

A cover plate member which is bolted while a plurality of consecutively arranged along the crack surface of the concrete structure, and protrudes a tubular coupling portion formed with a spiral on the outer peripheral surface of the end portion; One end is rotatably provided with a tightening nut screwed to the engaging portion of the cover plate member while the end surface is tapered to form a fitting portion so as to be closely coupled to the engaging portion, and the other end has a spiral on the outer peripheral surface of the end portion. L-shaped tube member to be formed; At one end, a tightening nut is rotatably provided so as to be screwed tightly with one end of the spiral formed member of the L-shaped pipe member, while the end face has a tapered outer peripheral surface to form a fitting portion, and the other end has a spiral formed at the outer peripheral surface of the end portion. , The branch pipe is integrally formed in the direction perpendicular to both ends, but the end of the branch pipe is rotatably provided with a tightening nut so as to be tightly screwed to the engaging portion of the cover plate member. A T-shaped tube member which is tapered to form a fitting portion; At one end, a tightening nut is rotatably provided so as to be tightly screwed with the other end of which the spiral is formed on the outer circumferential surface of the T-shaped tube member, and the outer end surface is tapered on the end surface to form a fitting portion, and the other end is formed with a spiral on the outer circumferential surface of the end portion. The main pipe member consisting of a predetermined length to: One end is provided with a tightening nut for screwing with one end formed with a spiral on the outer circumferential surface of the main pipe member, and an end surface is provided with a supply pipe that forms a fitting portion so that the outer circumferential surface is tapered, and the supply pipe is connected to a maintenance liquid supply means. No repair fluid supply to allow repair fluid to be supplied by: Crack repair apparatus for concrete structures provided as. The device for crack repair of a concrete structure according to claim 1, wherein each of the fitting parts is provided with a seal ring on an outer circumferential surface thereof so that a tight sealing is achieved between the mating surfaces. The crack repair apparatus of claim 1, wherein the cover plate member has a repair liquid leak prevention jaw having a predetermined diameter based on a hole in which the repair liquid flows to one side in close contact with the crack surface. The crack repair apparatus of claim 1, wherein the main pipe member is provided with a check valve for preventing a backflow. 2. The crack repair apparatus for a concrete structure according to claim 1, wherein the repair liquid supply means comprises a pump for supplying the repair liquid at a high pressure and an injector for supplying the repair liquid at a low pressure.