WO2018056727A1

WO2018056727A1 - Bolt for crack repair and reinforcement of structure

Info

Publication number: WO2018056727A1
Application number: PCT/KR2017/010419
Authority: WO
Inventors: 류정엽; 김종탁
Original assignee: 류정엽; 김종탁
Priority date: 2016-09-21
Filing date: 2017-09-21
Publication date: 2018-03-29

Abstract

Disclosed is a bolt for crack repair and reinforcement of a structure. The present invention implements the following advantageous effects: a blade structure mounted on the lower portion of the head portion of a screw can directly infiltrate a cracking portion, thereby fixing the crack, and permanent crack reinforcement can be implemented through a simple process without requiring an additional process.

Description

Bolts for crack repair and reinforcement of structures

The present invention relates to bolts for crack repair and reinforcement of structures.

After the structure is installed, cracks are generated due to impact, external force applied continuously, and aging according to the lapse of time. The cracks also affect the strength of the structure. It will act as a factor causing destruction.

Therefore, it is necessary to periodically check the occurrence of cracks that are acting as a critical threat to the safety of the structure and to immediately repair and reinforce the work.

In the case of cracks, a process for reinforcing a conventional structure includes, first, a process of installing a plurality of lock members that can temporarily fix cracks in a cracked area. It must be provided. The fixing member is fixed to the crack part by using a fixing screw after the crack is no longer opened.

1 is a process flowchart schematically showing a technique for performing repair of a structure 10 in which a conventional crack CR is generated.

Referring to FIG. 1, first, (a) using a drill D and a drill jig 20 to repair a portion in which a crack CR is generated in the structure 10, the hole H is perpendicular to the crack. ) To form and arrange a plurality.

(b) After that, the foreign matter inside the hole (H) or to remove the residue generated after the drilling operation.

(c) Next, the reinforcing key member K is inserted into the arrayed holes H and arranged. It is preferable to provide a plurality of such key members so as to prevent the crack CR from further progressing and to generate a constant fixing force.

(d) Then, in order to insert the bolt member in the cracking direction using the reinforcing bolt (B), the operation of drilling the bolt insertion holes (H1, H2) using a drill (D) again.

After (e), the reinforcing bolt B is inserted into the bolt insertion holes H1 and H2 to fix the crack portion.

(f) The reinforcing bolt B needs to be provided with a plurality of key members H3 and H4, and a plurality of reinforcing bolts are inserted into the crack in the advancing direction of the crack to be fixed.

However, this construction method is that the reinforcing key member (K) that is a fixed member is to be arranged essentially, it is necessary to drill a hole for fixing this, because the unnecessary impact is applied to the crack bar, cracks In addition, a problem occurs that occurs.

Furthermore, the construction of the drilling work insert into which the reinforcing key member is inserted and the insertion work of the reinforcing key member are inevitably generated, resulting in a long construction cost and a long process time.

In addition, after the reinforcing key member is inserted, the drilling operation for inserting the reinforcing bolts is performed again, and the working time is further increased.

In addition, the purpose of the reinforcement construction for permanent crack prevention is to be made, but due to the aging and adhesion of the fixing member, re-cracking of the portion to be bonded with the crack, it is impossible to ensure the reliability of the construction.

The present invention has been made in order to solve the above problems, an object of the present invention is to implement the operation of fixing the cracks to directly penetrate the crack structure of the blade structure mounted on the lower portion of the head of the screw, It is to provide a bolt for crack repair and reinforcement of a structure that does not require any additional process and allows permanent crack reinforcement to be implemented in a simple process.

As a means for solving the above problems, in the embodiment of the present invention, as shown in Figures 2 to 4, the body portion having a plurality of screw structures inclined downward around the outer peripheral surface (100); And a head part 200 disposed above the body part and having a tightening groove. The head part 200 extends from the head part 200 and protrudes in a downward direction. Two or more blade structures 210; to provide a bolt for crack repair and reinforcement of the structure comprising.

In this case, the blade structure 210, at least two or more corners (211, 212, 213) extending in the lower direction of the outer circumferential surface of the head portion 200 converged to the attachment (T); It may be composed of a crack repair and reinforcement bolt of the structure, the cutting portion of the blade shape is implemented in at least one or more of the corner portion.

In addition, the blade structure 210 according to an embodiment of the present invention, disposed in the inner region of the vertical width (A) formed by the outer peripheral surface of the head portion 200, to provide a bolt for crack repair and reinforcement of the structure. Do it.

Further, the blade structure 210, the cutting surface 214 disposed in the direction of the center (B) of the body portion 100 of the cutting surface implemented by the at least two or more corners, the curved surface of the central direction of the body portion The first curvature processing unit (R1) having a; can be implemented.

In addition, according to an embodiment of the present invention, the crack repair and reinforcement bolt of the structure is a second curvature processing unit (R4) for implementing the curvature of the distal end portion of the body portion 100 and the contact interface edge portion of the blade 210 It can be formed into a structure that is implemented.

In addition, the screw structure provided in the body portion, provided with a screw thread inclined downward on the outer circumferential surface of the body portion, so that the edge portion of the screw thread can be implemented in a structure having a second cutting portion of the blade structure.

In addition, the crack repair and reinforcement bolt of the structure according to an embodiment of the present invention, it may be implemented in a structure that is provided with a drilling tip structure 310 for drilling at the end of the body portion (100).

In this case, it may be configured to further include a vortex-shaped strip discharge groove 310a adjacent to the hole tip structure 310 to discharge the strip generated by the operation of the hole tip structure 310 to the outside. .

According to an embodiment of the present invention, the blade structure mounted on the lower portion of the head of the screw can directly penetrate the cracked portion to implement the work to fix the crack, no additional process is required, permanent crack reinforcement The effect is that it can be implemented in a simple process.

That is, no additional drilling is required to install the reinforcing member to reinforce the crack part, and it is possible to prevent the expansion of the crack, and to directly block the bar uniformly. Benefits can be realized.

Therefore, the blade structure according to the embodiment of the present invention is to directly penetrate the crack surface of the structure and the fixed reinforcement work is implemented.

In addition, as the area of the bolt gradually coming in contact with the area where the crack occurred during repair and reinforcement of the crack generated in the structure is curved, the area of contact with the inside of the structure is wider than that of the straight line. Compared with the straight line segment, the horizontal component is larger, which effectively prevents cracking during construction.

1 is a process chart showing a repair and reinforcement process of a crack generated in a conventional structure.

Figure 2 is a perspective conceptual diagram showing the structure of the bolt for crack repair and reinforcement of the structure according to the embodiment of the present invention.

Figure 3 is an enlarged view of the main portion of the crack repair and reinforcement bolt of the structure according to an embodiment of the present invention.

4 is a cross-sectional view taken along line AA ′ of FIG. 1.

5 and 6 are perspective views showing the construction method using the bolt for crack repair and reinforcement of the structure according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation according to the present invention. In the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and duplicate description thereof will be omitted. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Figure 2 is a perspective conceptual view showing the structure of the crack repair and reinforcing bolt (hereinafter referred to as "the present invention") of the structure according to an embodiment of the present invention, Figure 3 is an enlarged view of the main part of the present invention, Figure 4 Is a cross-sectional view taken along line AA ′ of FIG. 1.

Referring to Figures 2 to 4, the present invention is the body portion 100 having a plurality of screw structures inclined downward around the outer circumferential surface and the head portion 200 is provided on the upper portion of the body portion, with a tightening groove ), Extending from the head 200, protruding downward, and may include at least two or more blade structures 210 having an attachment T at the distal end.

That is, the present invention relates to a bolt structure that can easily dig the surface of the structure in which the crack is generated to directly perform reinforcement and repair, in particular, a cutting structure extending from the head to dig the surface of the structure (hereinafter, It is characterized by a structure having one or more).

Therefore, in a general bolt structure, a structure including at least one blade structure protruding downward from the head corresponding to the head portion of the bolt will be included in the gist of the present invention.

Specifically, the body portion 100 forms the perforations on the surface of the structure, the leg portion 300, a portion is inserted, the structure for the repair and reinforcing bolts for the structure of the structure according to the embodiment of the present invention After the introduction into the inside or the inside of the structure, as a means for withdrawing to the outside of the structure, it has a cylindrical shape as a whole, it may be implemented in a structure in which the screw structure is inclined downward along the outer circumferential surface.

The screw structure implemented in the body portion 100 may include a screw thread inclined downward on an outer circumferential surface of the body portion, and may be implemented in a structure in which an edge portion of the screw thread includes a second cutting portion 115 of a blade structure. . That is, the thread structure can implement the function of the tab and the thread at the same time, it is possible to efficiently dig into the structure.

The head portion 200 is formed in an integral structure on the upper portion of the body portion 100. That is, the outer peripheral surface circumference larger than the outer peripheral surface circumference of the body portion 100, the center of the lower surface is fixed to the center of the upper surface of the body portion 100 is formed integrally.

In particular, the upper surface of the head portion 200 is formed with a tightening groove 200a recessed downward, the tightening groove 200a is the bolt portion in the state in which the leg portion 300 is introduced into the surface of the structure It is a tool used to tighten or loosen the head to form a space where the box can be fitted.

In the first embodiment of the present invention, the tightening groove 200a is implemented as a hexahedral space, but the present invention is not limited thereto, and the tool, which is a tool used when tightening or loosening to the head of the bolt, may be fitted in various shapes. Could be implemented.

In addition, the head portion 200 is provided with a blade structure 210 which is a protrusion structure extending in a downward direction. The blade structure 210 extends from the head 200, protrudes in a downward direction, and may be implemented as a three-dimensional structure having an attachment T at the distal end.

At least one or more blade structures 210 may be disposed, and a plurality of blade structures 210 may protrude in a lower direction, in which the direction of the attachment T is in the longitudinal direction of the body part, and when the body part 100 rotates to progress downward. , The attachment (T) is in contact with the surface of the structure, it can be easily inserted into the head portion more efficiently.

That is, when the attachment (T) touches the surface of the structure and rotates, the surface of the structure is naturally excavated by the structure of the blade structure 210 and inserted into the structure.

That is, primarily, when a hole is formed in the surface of the structure by the drilling tip 210 structure, the body portion 100 enters the inside of the structure secondly due to rotation of the screw structure of the body portion, After that, the head 200 is naturally inserted into a space in which the blade structure 210 is formed by rotating.

To this end, the blade structure 210, as shown in Figures 2 and 3, at least two or more edges extending in the lower direction of the outer peripheral surface of the head 200 converged to the attachment (T) ( 211, 212, and 213. In particular, it is preferable to be configured in a structure that the cutting portion of the blade shape is implemented in at least one or more of the corner portion. The cutting part has a blade structure that is sharply implemented as a blade structure integrally with the edge portion, it is possible to easily cut the inner surface of the structure by rotation.

As shown in FIG. 2, the blade structure 210 of the present invention may be disposed in the inner region of the vertical widths A: a1 to a2 formed by the outer circumferential surface of the head 200. That is, when implemented in a structure that extends outside the area of the horizontal width of the head portion 200, the attachment (T) is disposed outside the diameter of the cross section of the head, the head is inserted into the structure and seated by fitting Will interfere with doing. Therefore, in order to realize strong insertion and binding force, the attachment T may be disposed in the inner region of the vertical widths A: a1 to a2 formed by the outer circumferential surface of the head 200.

Preferably, the attachment may be disposed at or in a position coinciding with the lower side of the outer circumferential surface of the head 200, which is to allow the blade structure to form a perforation having a width corresponding to the head 200. To make it possible.

In the blade structure of the present invention, as shown in FIG. 2, a plurality of blade structure units may be arranged at uniform intervals, but is not limited thereto.

In addition, the blade structure 210 has at least two

corner portions

211, 212, 213 extending in a lower direction of the outer circumferential surface of the head part 200 and converged to the attachment T, wherein the corner portion By the converging point and the attached to be able to be implemented as a three-dimensional structure as shown in FIG.

That is, the blade structure 210 may be provided with a plurality of cutting surfaces implemented by the at least two corners.

Among them, the cutting surface 214 disposed in the direction of the center portion B of the body portion 100 may be embodied as a first curvature processing portion R1 having a curved surface in the direction of the center portion of the body portion. The first curvature processor R1 implements rounding on the blade surface to facilitate the external discharge of the residues generated when cutting the structure surface and to easily dig into the structure surface.

In this case, when a plurality of blade structures are arranged, the first curvature processor R1 may have the curvature planes arranged in the same direction in one direction, thereby making the cutting operation more smooth.

In addition, as shown in FIGS. 2 and 3, in the case of the opposite surface facing the first curvature processing unit R1, the cutting surface may be implemented to have a curvature opposite to the curvature of the curvature processing unit R1. The operation can be made.

The blade structure (trihedron or tetrahedron) shown in (a) and (b) of Figure 3, in one embodiment, is not limited to this, the cutting edge for cutting (structure sharply edged) is Three-dimensional object having a three-dimensional structure having a corner portion is attached to the converging structure will be included in the blade structure of the present invention.

Referring to the operation of the blade structure of the present invention through the structure of Figures 2 and 3 (a) as follows.

The blade structure 210 is inserted into the inside of the structure by a screw structure formed inclined downward along the outer circumference of the body portion, the fixed to the center of the upper surface of the body portion 100 integrally formed It is a configuration for further pulling the head 200 into the inside of the structure.

Therefore, this working example will be described with reference to the structure shown in Fig. 3 (a) as an embodiment. The blade structure in the present embodiment, the first edge 211 of the straight line extending directly downward around the outer circumferential surface of the head portion 200, one end thereof is connected to the other end of the edge 211, the head The second edge 212 of the curve that the other end is connected to a position spaced in the clockwise or counterclockwise direction at the position in contact with one end of the first edge 211 of the outer peripheral surface of the portion 200, and the first edge One end is connected to the other end of the 211, the structure consisting of a tetrahedral shape including a third edge 213 of the curve that the other end is connected to the position where the body portion 100 and the head portion 200 abuts is applied do.

As the first edge 211 and the third edge 213 of the blade structure 210 is integrally provided with a blade structure (cutting part), which is a structure in which a sharp edge is formed at the end along the longitudinal direction. The leg part 300 is introduced into the surface of the structure in a process of fitting the box into the tightening groove 200a of the head to rotate clockwise or counterclockwise.

Subsequently, when the body part 100 is introduced into the structure, the lower end of the blade 210, that is, the other end of the first edge 211, the second edge ( One end of 212 and one end of the third component 213 come into contact with the surface of the structure.

At this time, the position where the surface abuts the structure (the position where the other end of the first edge, one end of the second edge, one end of the third component abuts) is able to concentrate the stress on the contact area as point contact with the structure. . This can be more easily introduced into the surface of the structure.

In addition, by cutting the structure in the inward direction along the direction of rotation by being provided with a sharp blade at the end along the longitudinal direction of the first edge 211 and the third edge 213 at the same time the head portion 200 Can be drawn in the inward direction of the cut structure.

And the blade structure 210 can be drawn into the structure more easily as it is made of a tetrahedral shape, the area that is in contact with the inside of the structure is wider than that made of a straight edge even in the state of being drawn inside the structure Of course, since the horizontal component (horizontal component) is larger than that consisting of a straight edge there is an effect that can effectively prevent cracks occurring during the construction process.

Referring to FIG. 4, this shows the sectional view taken along line AA ′ of FIG. 1.

Referring to the structure shown in Figure 4, the head region 200 and the body portion 100 in contact with the edge region is formed a stress concentration prevention groove (100a) recessed inwardly, the stress concentration prevention groove (100a) is a substantially ring-shaped recessed space, in order to repair the crack of the structure in the process of introducing the crack repair and reinforcing bolt 50 of the structure according to the first embodiment of the present invention The stress is concentrated in the edge region where the body portion 100 and the head 200 of the crack repair and reinforcing bolt 50 of the structure according to the embodiment can be prevented from cracking.

Particularly, the present invention further provides a second curvature processing unit R4 that implements the curvature of the end portion of the body portion 100 and the above-described stress concentration preventing groove, which is an edge portion of the contact boundary surface of the blade 210. It can be formed into an implementation structure.

That is, the present invention has a second curvature processing portion for implementing the edge portion of the contact portion between the distal end portion and the blade blade of the blade portion, when digging into the surface of the structure, the force of the vertical stress to dig in the vertical direction It is possible to easily disperse and prevent secondary cracks.

Leg portion 300 of the present invention shown in Figure 4 is provided with a drilling tip structure 310 for drilling at the end of the body portion 100, the drilling tip structure adjacent to the drilling tip structure 310 Vortex-shaped strip discharge groove 310a for discharging the strip generated by the operation of the 310 to the outside can be implemented.

In addition, the leg portion 300 is fixed to the center of the lower surface of the body portion 100 is formed integrally, so that the circumference becomes smaller toward the lower side from the outer peripheral surface circumference to facilitate the introduction to the surface of the structure , So that the perforated tip structure 310 can be implemented at its end.

Referring to FIG. 5, when the circumference of the area where the crack of the structure is generated is smaller than the circumference of the outer circumferential surface of the body portion 100 of the crack repair and reinforcement bolt 50 of the structure according to the first embodiment of the present invention, The perforated tip structure is disposed in contact with the center of the area where the crack of the structure has occurred, in the leg portion of the structure for crack repair and reinforcement bolt 50 of the structure according to the embodiment of the present invention.

After that, the reinforcing bolt 50 of the present invention is introduced into the region where the crack of the structure is generated by rotating the box in accordance with the tightening groove. At this time, as the blade structure is formed on the lower surface of the head of the reinforcing bolt 50 of the present invention, when the reinforcing bolt 50 is introduced by the blade is easily penetrated through the outer circumferential surface of the region where the crack has occurred It acts as a force to open.

On the other hand, as shown in Figure 6, when the circumference of the area where the crack of the structure is generated is larger than the circumference of the outer peripheral surface of the body portion 100 of the crack repair and reinforcement bolt 50 of the structure of the present invention, As described above, cracks can be prevented by linking a plurality of reinforcing bolts 50.

In this case, in particular, in the region where the structure cracks and the hole member 30 abuts in the construction process, it is environmentally friendly with low volatile organic components, can be used in high insulation, impact resistance, high moisture, and has a high adhesive strength You can also apply a release-forming material such as benzona to finish a more stable crack-proof construction.

In the detailed description of the invention as described above, specific embodiments have been described. However, many modifications are possible without departing from the scope of the invention. The technical spirit of the present invention should not be limited to the described embodiments of the present invention, but should be determined not only by the claims, but also by those equivalent to the claims.

Claims

Body portion 100 having a plurality of screw structures inclined downward around the outer peripheral surface; And

Is disposed above the body portion, the head portion 200 having a tightening groove; includes,

At least two blade structures (210) extending from the head (200), protruding in a downward direction, and having an attachment (T) at the distal end;

Crack repair and reinforcement bolts of the structure comprising a.
The method according to claim 1,

The blade structure 210,

And at least two corner portions 211, 212, and 213 extending in a lower direction of the outer circumferential surface of the head 200 and converged to the attachment T.

At least one or more cutting edge-shaped cutting portion is implemented,

Bolts for crack repair and reinforcement of structures.
The method according to claim 2,

The blade structure 210,

Is disposed in the inner region of the vertical width (A) formed by the outer peripheral surface of the head 200,

Bolts for crack repair and reinforcement of structures.
The method according to claim 3,

The blade structure 210,

In the cutting surface 214 disposed in the direction of the central portion (B) of the body portion 100 of the cutting surface implemented by the at least two corners,

A first curvature processing unit (R1) having a curved surface in the direction of the center of the body portion;

Bolts for crack repair and reinforcement of structures.
The method according to claim 4,

A second curvature processor (R4) for implementing a curvature of the distal end portion of the body portion 100 and the contact interface edge portion of the blade 210;

Is implemented,

Bolts for crack repair and reinforcement of structures.
The method according to claim 5,

The screw structure provided in the body portion,

It is provided with a screw thread inclined downward on the outer peripheral surface of the body portion, the edge portion of the screw thread is implemented in a structure having a second cutting portion of the blade structure,

Structure crack repair and reinforcement bolt.
The method according to claim 6,

A perforation tip structure 310 for perforation is provided at the end of the body portion 100,

Structure crack repair and reinforcement bolt.
The method according to claim 7,

Adjacent to the perforated tip structure 310 to discharge the strip generated by the operation of the perforated tip structure 310 to the outside,

Vortex-shaped strip discharge groove 310a is implemented,

Structure crack repair and reinforcement bolt.