KR101980355B1 - Method of repair and reinforcement of structure using fire retardant resin - Google Patents

Abstract

The present invention relates to a method of repairing and reinforcing a structure using a flame retardant resin. More particularly, the present invention relates to a repair and reinforcement method for repairing and repairing cracks in a structure, A first epoxy resin layer forming step of applying an epoxy resin to an outer surface of the structure to form a first epoxy resin layer; and a second epoxy resin layer forming step of fastening a base reinforcement panel to the anchor bolt A base reinforcing panel mounting step of fixing a front surface of the base reinforcing panel to the epoxy resin layer and fixing the front surface of the base reinforcing panel to the epoxy resin layer, a slant guide panel having one end fixed to the back surface of the base reinforcing panel, A fastening unit mounting step of mounting a fastening unit comprising a latching panel to be formed, A second epoxy resin layer forming step of forming a second epoxy resin layer by applying an epoxy resin to the back surface of the base reinforcement panel; a second epoxy resin layer forming step of forming a second epoxy resin resin layer on the second epoxy resin resin layer, And a flame retardant panel mounting step of fixing and attaching the panel to the flame retardant resin.
According to the repair and reinforcement method of the present invention, it is possible to improve the supporting force by reinforcing the outer surface of the structure and repairing the cracks, and the anchor bolt and the nut are not exposed to the outside during installation, A separate finishing process is unnecessary for embedding the bolt and the nut, thereby shortening the process and reducing the construction cost.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire retardant resin,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of repairing and reinforcing a structure using a flame retardant resin, and more particularly, to a method of repairing and reinforcing a structure using a flame retardant resin.

Generally, concrete or reinforced concrete structures (such as bridges, retaining walls, tunnels, general apartments, underground parking lots of buildings, houses and building walls, etc.) tend to have external factors (shocks, chemicals, seawater, etc.) Cracks, corrosion and peeling due to deformation of physical properties, exposure of reinforcing steel parts due to this, whitening and sagging phenomena are occurring. Particularly, cracks such as this are likely to cause the worst such as collapse, It is known that reinforcement work is carried out by.

The reinforcement of concrete structures can be roughly classified into restoring the strength reduction and increasing the structural strength to suit the purpose of use. In order to repair or reinforce the cracked structure (structure) , It is necessary to determine a reinforcement method suitable for sufficiently completing the cause.

The reinforcement of the structure needs to be precisely handled in terms of reconstructing the structure to suit the purpose of use, and the behavior after reinforcement must be fully considered.

When reinforcing a structure, reinforcement method, reinforcement time, and reinforcement material are selected so that the pre-planned reinforcement purpose can be achieved in consideration of the cause of crack, load, range and scale of required strength reinforcement, And the section and members must be designed. In addition, the stability should be considered considering the change of the structure, the additional long-term load, and the construction load at the time of reinforcement.

In other words, the order of reinforcement of structures is as follows: ① Analyze various survey results to estimate the cause and extent of damage, determine the timing and extent of reinforcement and scale, ② Load applied to the structure, environment where the structure is located, Identification of various constraints on damaged structures such as ease of construction and duration of reinforcement, consideration of the degree of damage and constraints, and selection of reinforcement materials that are deemed to be most appropriate, and design of sections and members. ③ Design the machine tools necessary for reinforcement work. ④ Design a supporting stand (work footrest, etc.) for reinforcement work. ⑤ Review equipment for work safety. ⑥ Be careful about beauty after reinforcement. ⑦ Determine how to confirm the reinforcement effect.

As described above, the construction methods for selecting and reinforcing the reinforcing materials should be determined according to the purpose of reinforcement, and considering the characteristics of each material constituting the reinforcement, The reinforcing material of the panel structure is installed on the surface of the building to be repaired as in Korean Patent Registration No. 10-0439922 and then the reinforcing material is inserted into the anchor bolt The nuts fix the reinforcement.

However, the conventional structure for fixing the reinforcing member has a problem that the end portion and the nut of the anchor bolt are protruded to the outside to deteriorate the aesthetic appearance, and there is a problem that the nut is gradually released due to external force or wind and the stiffener is moved or separated from the anchor bolt . In order to solve such a problem, recently, a receiving groove is formed in the stiffener so that the end portion and the nut of the anchor bolt are received, and then the receiving groove is filled again. However, there is a problem that the process time is delayed due to complicated processes, There is still a problem that the aesthetic appearance is deteriorated due to exposure.

The above-mentioned invention means the background art of the technical field to which the present invention belongs, and does not mean the prior art.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. An object of the present invention is to provide a method of manufacturing a panel, which comprises impregnating a panel with a flame retardant resin to shorten a process, To provide a method of repairing and reinforcing the above-mentioned structure.

In order to achieve the above object,

A method of repairing and reinforcing a structure installed on an outer surface of a structure to repair and reinforce a crack of a structure, the method comprising: an anchor bolt installing step of removing foreign substances from the outer surface of the structure to install an anchor bolt; A first epoxy resin layer forming step of applying a resin to form a first epoxy resin layer; a step of fastening and fixing the base reinforcement panel to the anchor bolt, and fixing the front surface of the base reinforcement panel to the epoxy resin layer in close contact with the epoxy resin layer A step of installing a fastening unit for installing a fastening unit comprising a slant guide panel having one end fixed to the rear portion of the base reinforcement panel and a fastening panel formed at an upper end of the slant guide panel, A second epoxy resin layer is formed by applying an epoxy resin to the backside of the panel, And a flame-retardant resin mounting step of fixing the second epoxy resin layer to the second epoxy resin layer by attaching a panel impregnated with a flame retardant resin to the first and second epoxy resin layers, To provide a method for repairing and reinforcing a structure using the same.

In one embodiment of the present invention, the base reinforcement panel further includes through holes to reduce the weight, and one of the through holes is fastened to the anchor bolt and fixed.

According to an embodiment of the present invention, the flame retardant panel may have a receiving groove formed in an adhesive surface thereof so as to receive an anchor bolt projected from the base reinforcing panel, and the inner circumference of the receiving groove may be fitted into the fastening unit, A locking step is further formed to be engaged with the panel, and a lower part of the locking step is further formed on the inclined guide surface to be guided by the inclined guide panel.

In addition, in one embodiment of the present invention, the latching panel further includes an operation groove formed on an inner surface of the latching panel, a pressure spring projecting from the operation groove, And an elastic pressure panel is further formed to press the jaw toward the structure.

In addition, in an embodiment of the present invention, after the step of installing the flame retardant panel, a step of installing a connection panel is further added, and the connection panel is formed by forming a connection groove on a side surface of the base reinforcement panels provided on the structure, A connection panel having an inner fastening protrusion and an outer fastening protrusion formed on both sides thereof after the coupling grooves are formed on the side surfaces of the panels is inserted into the coupling grooves and the coupling grooves and the coupling panels are inserted between the base reinforcing panels and the flame- And the epoxy resin is applied to both side surfaces of the connection panel so that the connection panel, the base reinforcement panel, and the flame retardant panel are attached to each other.

The method for repairing and reinforcing a structure using a flame retardant resin according to the present invention includes the steps of installing an anchor bolt, forming a first epoxy resin layer, installing a base reinforcement panel, installing a fastening unit, forming a second epoxy resin layer, It is possible to improve the supporting force by reinforcing the outer surface of the structure and repairing the crack while doubling the panel mounting step and the connecting panel mounting step, and it is possible to improve the aesthetics because the anchor bolt and nut are not exposed to the outside during installation And an additional finishing process is unnecessary for embedding the anchor bolt and the nut, so that the process can be shortened and the construction cost can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart showing a method of repairing and reinforcing a structure using a flame retardant resin according to the present invention. FIG.
FIG. 2 is a view showing a step of installing an anchor bolt in a repairing and reinforcing method of a structure using a flame retardant resin according to the present invention.
3 is a view illustrating a step of forming a first epoxy resin layer and a step of installing a base reinforcement panel in a method of repairing and reinforcing a structure using a flame retardant resin according to the present invention.
FIG. 4 is a view showing a step of installing a fastening unit in a repairing and reinforcing method of a structure using a flame retardant resin according to the present invention.
FIG. 5 is a view showing steps of installing a flame retardant panel in a repairing and reinforcing method of a structure using a flame retardant resin according to the present invention.
6 is a view showing another embodiment of a method of repairing and reinforcing a structure using the flame retardant resin according to the present invention.
FIG. 7 is a view illustrating a step of installing a connection panel in the method of repairing and reinforcing a structure using the flame retardant resin according to the present invention.
8 is a view showing another flow chart of a method of repairing and reinforcing a structure using a flame retardant resin according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as an example, and various embodiments may be implemented through the present invention.

FIG. 1 is a flow chart showing a method for repairing and reinforcing a structure using a flame retardant resin according to the present invention. FIG. 3 is a view showing a step of forming a first epoxy resin layer and a step of installing a base reinforcing panel in a method of repairing and reinforcing a structure using a flame retardant resin according to the present invention, 5 is a view showing a step of installing a flame retardant panel in a repairing and reinforcing method of a structure using a flame retardant resin according to the present invention, and FIG. 6 is a view showing a step of installing a flame retardant resin according to the present invention FIG. 7 is a view showing another embodiment of the repairing and reinforcing method of a structure using a resin, and FIG. 7 is a view showing a method of repairing and reinforcing a structure using a flame- I, a diagram illustrating a connection panel installation steps, Figure 8 is a view showing another flow diagram of a rehabilitation method of a structure using a flame-retardant resin according to the present invention.

As shown in the drawing, a repair and reinforcement method of a structure using a flame retardant resin according to the present invention is a repair and reinforcement method in which a crack 300 of a structure 100 is installed on the outer surface of a structure 100, The method for repairing and reinforcing a structure according to the present invention comprises the steps of installing an anchor bolt S1, forming a first epoxy resin layer S2, installing a base reinforcement panel S3, installing a fastening unit S4, A second epoxy resin layer formation step S5, a flame retardant panel installation step S6, and a connection panel installation step S7.

The anchor bolt installing step S1 is a step of injecting water into the outer surface 200 of the structure 100 to remove foreign substances and then punching the outer surface 200 with a perforator so that one end of the anchor bolt 10 ).

A nut is fastened to the anchor bolt 10 to fix the base reinforcement panel 30 to be described later.

The first epoxy resin layer forming step S2 is a step of forming a first epoxy resin layer 20 by applying a viscous liquid epoxy resin to the outer surface 200 of the structure 100. [ The epoxy resin may be an epoxy adhesive.

At this time, it is preferable that the epoxy resin is injected into the crack 300 of the outer surface portion 200 to fill it.

The epoxy resin is applied so that the epoxy resin is easily injected into the cracks 300 and the first epoxy resin layer 20 is formed on the outer surface 200 with a uniform thickness. And a vibrator which is attached to the epoxy resin is attached to the epoxy resin and then the vibrator which is a vibrator is vibrated to transmit vibration to the epoxy resin so that the epoxy resin is injected into the crack 300 without being caught, It is preferable to further add a vibration applying step after the step (S2) of forming the first epoxy resin layer so that the first epoxy resin layer 20 can be formed.

After the vibrator is driven, the release panel can be separated from the release panel after the release panel is separated from the release panel, so that the release panel can be recycled.

Alternatively, the epoxy resin may also be applied using a syringe injection method.

The base reinforcing panel mounting step S3 may be performed by fastening and fixing the base reinforcing panel 30 to the anchor bolts 10 and by fitting the front portion 31 of the base reinforcing panel 30 to the epoxy resin layer And fixing it.

3, through holes 33 are formed in the base reinforcement panel 30 and any one of the through holes 33 is passed through the anchor bolts 10 and then a nut is fastened to the structure 100 and the first epoxy resin layer 20, respectively.

By forming the through holes 33 in the base reinforcement panel 30, the weight of the base reinforcement panel 30 can be reduced.

Alternatively, only one through hole 33 may be formed, and then the anchor bolt 10 may be fastened and fixed.

The base reinforcement panel 30 may be formed of a metal material or a synthetic resin material and may be formed of a synthetic resin material having elasticity.

As described above, the base reinforcement panel 30 is installed on the structure 100 so that the outer surface 200 of the structure 100 can be primarily reinforced and repaired.

The fastening unit mounting step S4 includes a slant guide panel 41 having one end fixed to the back surface 32 of the base reinforcing panel 30 and a fastening panel 42 formed on the upper end of the slant guide panel 41. [ The fastening unit 40 is installed.

The inclined guide panel 41 is formed of a metal material and welded or welded to the base reinforcement panel 30 at the lower end thereof to fix the engaging panel 42 to the upper portion of the inclined guide panel 41, Thereby forming a fastening groove 43 between the latching panel 42 and the base reinforcing panel 30.

The step S5 of forming the second epoxy resin layer may include forming a second epoxy resin layer 50 by applying an epoxy resin as a liquid epoxy adhesive to the backside 32 of the base reinforcement panel 30, to be.

The flame retardant panel mounting step S6 is a step of fixing the flame retardant panel 60 to the second epoxy resin layer 50 by fixing the flame retardant panel to the fastening unit 40 of the base reinforcement panel 30. [

In the present invention, the flame retardant panel uses a reinforcing panel manufactured by impregnating a flame retardant resin. The flame retardant resin used in the technical field of the present invention can be used without limitation.

The flame retardant panel 60 is formed with a receiving groove 61 on an adhesive surface thereof so that the anchor bolt 10 protruded from the base reinforcing panel 30 is received therein. And a locking protrusion 62 is formed on the lower surface of the locking protrusion 62 so that the locking protrusion 62 is engaged with the locking panel 42. The locking protrusion 62 is formed on the inclined guide surface 621 Lt; / RTI >

The engaging protrusion 62 is pulled into the engaging groove 43 to guide the inclined guide surface 621 of the engaging protrusion 62 to the inclined guide panel 41 as shown in FIG. And is attached to the second epoxy resin layer 50 and is fixed to the base reinforcement panel 30. The base reinforcement panel 30 is fixed to the base reinforcement panel 30 by being attached to the second epoxy resin layer 50. [

The engaging protrusion 62 is formed of a metal material or a synthetic resin material and is preferably screwed or fused to the receiving recess 61 to be fixed.

Further, the anchor bolt 10 and the nut projected into the receiving groove 61 are inserted, so that the anchor bolt 10 and the nut are not exposed to the outside, thereby providing a beautiful aesthetic appearance.

At this time, it is preferable that a roller is further provided on the inclined guide surface 621 to prevent the inclined guide surface 621 from rubbing against the inclined guide panel 41 and to be guided downward.

The flame retardant panel 60 is attached to the base reinforcement panel 30 to reinforce the outer surface portion 200 of the structure 100 and improve the supporting force.

At this time, the flame retardant panel 60 is formed of a panel having a predetermined thickness by impregnating a nonwoven fabric or a synthetic fiber sheet with a liquid resin, and may be any of synthetic resin or metal panel containing fibers.

Since the flame retardant panel 60 includes fibers or nonwoven fabric, the flame retardant panel 60 can maintain a constant strength and reduce the weight of the flame retardant panel 60.

Alternatively, the primer may be applied to both sides of the nonwoven fabric, and then a panel made of a synthetic resin may be attached to both sides to form the flame retarding panel 60. The nonwoven fabric and the panel are impregnated with the resin solution, Can be formed.

7, an operation groove 421 is further formed on the inner side surface of the latch panel 42. A pressing spring 422 is protruded from the operation groove 421, An elastic pressing panel 423 is further formed at the end of the pressing spring 422 protruded from the elastic member 422 so as to press the locking protrusion 62 toward the structure 100, The elastic pressing panel 423 presses the latching protrusion 62 to prevent the flame retarding panel 60 from being moved or separated from the base reinforcing panel 30. [

8, the step of installing the connection panel 70 is further added after the flame retardant panel installation step S6, and the connection panel installation step S7 is performed by attaching the base reinforcement panel 30 provided on the structure 100, And a connecting panel 70 having an inner fastening protrusion and an external fastening protrusion formed on both sides of the connecting panel 70, The connection panels 70 are inserted between the base reinforcement panels 30 and the flame retardant panels 60 while being inserted into the connection grooves 34 and the coupling grooves 63, The epoxy resin is applied to both sides of the connection panel 70, the base reinforcement panel 30 and the flame retardant panel 60 so as to be attached thereto.

An inner fastening protrusion 71 and an external fastening protrusion 72 are formed on the connection panel 70 and are fastened to the connection groove 34 and the coupling groove 63 and then fixed with the epoxy resin, , The connection panel 70 is doubly fastened to the base reinforcement panel 30 and the flame retardant panel 60, thereby preventing the connection panel 70 from being moved or removed.

The method of repairing and reinforcing a structure using the flame retardant panel according to the present invention can reinforce the outer surface of the structure and repair cracks by reinforcing the outer surface of the structure with the base reinforcement panel and the flame retardant panel, A bolt and a nut are not exposed to the outside to improve the aesthetics and a separate finishing process is unnecessary for embedding the anchor bolt and the nut so that the process can be shortened and the construction cost can be reduced, The problems caused by the exposure of the bolt and the problem of reducing the bearing capacity over time do not occur.

It will be apparent to those skilled in the art that various modifications and equivalent arrangements may be made therein without departing from the scope of the present invention as defined by the appended claims and their equivalents. . Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

10: anchor bolt 20: first epoxy resin layer
30: base reinforcing panel 40: fastening unit
50: second epoxy resin layer 60: flame retardant panel
70: Connect panel
100: Structure 200:
300: crack

Claims (5)

The present invention relates to a repair and reinforcement method, which is installed on an outer surface of a structure to repair and reinforce cracks in the structure,
An anchor bolt installing step of removing foreign matter from the outer surface of the structure and installing the anchor bolt by drilling,
A first epoxy resin layer forming step of forming an epoxy resin layer on an outer surface of the structure to form a first epoxy resin layer;
Fixing the base reinforcement panel to the anchor bolt and fixing the base reinforcement panel to the base resin reinforcement panel in close contact with the epoxy resin layer,
A step of installing a fastening unit comprising a slant guide panel having one end fixed to the back surface of the base reinforcement panel and a latch panel formed at an upper end of the slant guide panel,
A second epoxy resin layer forming step of forming a second epoxy resin layer by applying an epoxy resin to the back surface of the base reinforcement panel,
And a flame retardant panel fastening step of fastening the fastening unit of the base reinforcement panel and attaching and fixing a panel impregnated with the flame retardant resin to the second epoxy resin layer,
Wherein the step of installing the connecting panel further comprises forming a connecting groove on the side of the base reinforcement panels provided on the structure and forming a coupling groove on the side of the flame retardant panels, The connecting panel having the inner fastening projections and the external fastening projections on both sides thereof is inserted into the connection groove and the coupling groove and the connection panels are disposed between the base reinforcing panels and the flame retardant panels, Wherein the connection panel, the base reinforcement panel and the flame retardant panel are adhered to each other by applying an epoxy resin to both sides of the base panel Repair and Reinforcement Method of Structures Using Flame Retardant Resin.
The method according to claim 1,
Wherein the base reinforcement panel is further formed with through holes so as to reduce the weight, and one of the through holes is fastened and fixed to the anchor bolt to fix the structure.
The method according to claim 1,
The flame retardant panel has a receiving groove formed in its adhesive surface so as to receive an anchor bolt projected from the base reinforcing panel, and an inner periphery of the receiving groove is further formed with a latching jaw so as to be engaged with the latching panel, And the lower portion of the latching jaw is further formed on the inclined guide surface to be guided by the inclined guide panel.
The method of claim 3,
Wherein an operating groove is further formed in the inner side surface of the latch panel and a pressing spring is protruded from the operating groove so that the engaging protrusion protruded from the operating groove is elastically pressed And a panel is further formed on the flame retardant resin. delete

Images