KR20160093880A - The screw anchor pile with extended reinforcing plate for earth reinforcement - Google Patents

Abstract

The present invention relates to a ground reinforcement screw pile with a front end extension reinforcement plate mounted thereon. More specifically, the ground reinforcement screw pile excavates the ground, and comprises: a body of a bar shape having a through hole which is formed therein and becomes a passage of grouting liquid; a screw wing formed in a spiral shape along an outer circumferential surface of the body and integratively installed on the body; a plurality of grouting holes drilled to spray the grouting liquid to the outer circumferential surface of the body; a front end extension reinforcement plate of a circular plate shape wherein one end of the body is mounted on an upper surface thereof, and an air discharge hole penetrates the upper and a lower surface thereof to be placed on a line with the through hole; and an excavation bit wherein a cutting blade is formed on one end thereof, and the other end thereof is mounted on one side of the lower surface of the front end extension reinforcement plate. The excavation bit (500) and the screw wing rotate to drill the ground, and then the front end extension reinforcement plate is seated on a bottom surface of a drilled hole and grouts the bottom surface to increase front end bearing power.

Description

[0001] The present invention relates to a screw anchor pile with an extended reinforcing plate for earth reinforcement,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a screw reinforcement for ground reinforcement combined with a leading end reinforcing plate having an increased tip end supporting force.

In general, when a high-rise building or a reinforced concrete structure is to be built, a basic construction is carried out by putting a PHC file or an H-type beam on the ground in order to strengthen the foundations, and the construction of the above- It is a very important construction for building structures.

As a method of constructing the above-mentioned file, a piling method and an excavation method have been introduced. The method of installing the electron is as follows: a method in which the hammer of the weight is elevated by using a hoisting rope installed on the upper part of a leader installed vertically in the crawler traveling device, So that the pile is poured into the ground while the hammer is raised and lowered. In the latter excavation method, a screw file mounted on a file connection part is rotated to excavate the ground to form a pile hole, and then the screw file is reversed to be pulled out from the excavated pile and inserted into the pile .

However, there is a great difference in the time required for perforating the ground according to the shape of the screw file when drilling the ground using such a screw file, and there is a need for a shape of the screw file that can drill the ground most effectively According to the present invention, the present applicant has proposed the registered patent No. 10-1416864 and improved the workability. That is, the Japanese Patent Registration No. 10-1416864 is an invention that can shorten the time required for punching operation when drilling a ground using a screw pile, and at the same time, improve workability of the punching operation.

However, the present applicant's registered patent No. 10-1416864 can increase the perforating workability but can not secure the tip supporting force, so that a large number of files must be installed in order to secure the design supporting force. That is, the construction history of the inserted file is made up of the sum of the front end bearing force of the file front end and the peripheral frictional force of the file side surface, but the conventional method can not secure the front end bearing force,

Korean Patent No. 10-1416864

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to at least partially solve the above problems and / or disadvantages and to provide at least the advantages described below. The present invention provides a screw for reinforcing a ground, which is combined with a reinforcing plate for extending the end of the screw, which improves workability and economy.

In order to accomplish the above object, the present invention provides a ground reinforcement file capable of excavating a ground, comprising: a rod-shaped body having a through hole formed therein for passage of air and a grouting liquid; A grouting hole formed in the body so as to allow the grouting solution to be sprayed on the outer circumferential surface of the body; and a grooved hole formed in the shape of a circular plate, one end of the body being coupled to the upper surface, And a cutting edge is formed at the other end, and one end of the excavating bit is coupled to one side of the lower end of the end expanding reinforcing plate, and the excavating bit 500 ) And the screw wing rotates to pierce the ground, and then the end extension reinforcing plate is seated on the bottom surface of the perforated hole, To increase the supporting force provided to the front end extended reinforcing plate bonded ground reinforcement screw file according to claim.

The present invention has the following effects.

First, the present invention is an invention in which an end extension reinforcing plate is coupled to a file, and the endurance of the file is used to increase the construction resistance of the file. That is, the present invention can reduce the number of files or the length of a file to be installed in order to secure a design supporting capacity, thereby remarkably reducing a construction period and a construction cost.

Second, since the present invention is capable of purchasing a file at the same time as perforating, it is advantageous in that the construction period required for perforating and compacting the file can be reduced.

1 is a perspective view showing an embodiment of a screw file of the present invention.
2 is an exploded perspective view of FIG.
3 is a cross-sectional view of Fig.
4 is a bottom view of Fig.
5 is a perspective view showing a second embodiment of the screw file of the present invention.
6 is a perspective view showing a third embodiment of the screw file of the present invention.
FIG. 7 is an exploded perspective view of FIG. 6. FIG.
8 is a cross-sectional view of Fig.
Fig. 9 is a bottom view of Fig. 6. Fig.

Hereinafter, the detailed description of the ground reinforcement screw file to which the end extension reinforcing plate according to the present invention is coupled will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing one embodiment of a screw file of the present invention, and FIG. 2 is an exploded perspective view of FIG. 1. FIG.

Fig. 3 is a sectional view of Fig. 1, and Fig. 4 is a bottom view of Fig.

5 is a perspective view showing a second embodiment of the screw file of the present invention.

The present invention relates to a ground reinforcement screw pile to which a ground supporting reinforcement plate is coupled. More specifically, the present invention relates to a ground reinforcement pile capable of excavating a ground, in which a through hole (110) for passage of air and a grouting solution is formed A screw blade 200 formed in a spiral shape along the outer circumferential surface of the body 100 and integrally installed in the body 100; A plurality of grooves 300 formed on the upper surface of the body 100 so as to allow the air to be injected thereinto; (400) having a cutting edge formed at the other end thereof and having one end connected to one side of a lower surface of the end-extending reinforcing plate (400), and an excavating bit (500 ), Wherein the excavation ratio The screw 500 and the screw blade 200 rotate to puncture the ground, and the end extension reinforcing plate 400 is seated on the bottom surface of the perforated hole, thereby increasing the supporting force.

The present invention relates to a soil reinforcement screw file having a body 100, a screw blade 200, a grouting hole 300, a tip extension reinforcing plate 400, and a drilling bit 500, It is an invention that can reduce the construction period and the construction cost when constructing the pile for supporting the load of the structure.

In general, when a high-rise building or a reinforced concrete structure is to be built, a basic construction is carried out by putting a PHC file or an H-type beam on the ground in order to strengthen the foundations, and the construction of the above- It is a very important construction for building structures.

As a method of constructing the above-mentioned file, a piling method and an excavation method have been introduced. The method of installing the electron is as follows: a method in which the hammer of the weight is elevated by using a hoisting rope installed on the upper part of a leader installed vertically in the crawler traveling device, So that the pile is poured into the ground while the hammer is raised and lowered. In the latter excavation method, a screw file mounted on a file connection part is rotated to excavate the ground to form a pile hole, and then the screw file is reversed to be pulled out from the excavated pile and inserted into the pile .

However, there is a great difference in the time required for perforating the ground according to the shape of the screw file when drilling the ground using such a screw file, and there is a need for a shape of the screw file that can drill the ground most effectively According to the present invention, the present applicant has proposed the registered patent No. 10-1416864 and improved the workability. That is, the Japanese Patent Registration No. 10-1416864 is an invention that can shorten the time required for punching operation when drilling a ground using a screw pile, and at the same time, improve workability of the punching operation.

However, the present applicant's registered patent No. 10-1416864 can increase the perforating workability but can not secure the tip supporting force, so that a large number of files must be installed in order to secure the design supporting force. That is, the construction history of the inserted file is made up of the sum of the front end bearing force of the file front end and the peripheral frictional force of the file side surface, but the conventional method can not secure the front end bearing force,

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to at least partially solve the above problems and / or disadvantages and to provide at least the advantages described below. The present invention provides a screw for reinforcing a ground, which is combined with a reinforcing plate for extending the end of the screw, which improves workability and economy.

That is, the present invention is an invention in which the end extension reinforcing plate is coupled to the file, and the endurance of the file can be utilized to increase the construction resistance of the file. That is, the present invention can reduce the number of files or the length of a file to be installed in order to secure a design supporting capacity, thereby remarkably reducing a construction period and a construction cost. In addition, the present invention has the advantage of being able to purchase a file at the same time as the perforation, thereby reducing the construction time required for perforating and closing the file.

The body 100 is a rod-like member having a through hole 110 formed therein for passage of air and a grouting solution. The body 100 includes a through hole 110 extending in the longitudinal direction at a center thereof to form a path through which the fluid moves so as to facilitate the drilling operation by ejecting a fluid such as water or air during the drilling of the ground, Respectively. When the air is injected into the ground through the penetrating hole 110, the ground is weakened so that the piercing operation can be performed more smoothly. At the same time, the perforated soil can be quickly moved to the screw blade 200 to be described later. . The through hole 110 is used as an air or fluid injection path in the ground penetration and pile installation steps, and as an injection path of the grouting solution in the grouting step.

In addition, the present invention may further include one or more bodies 100 formed with grouting holes 300 on the outer circumferential surface of the other end of the body 100 according to the excavated depth. That is, a plurality of bodies 100 may be coupled to each other according to the depth of excavation, and excavated to a depth required in the design.

A variety of materials can be used as the body 100 satisfies the required strength, for example, a steel pipe can be used.

The screw blades 200 are formed in a spiral shape along the outer circumferential surface of the body 100 and integrally installed in the body 100. The screw blades 200 may be formed along the entire length of the body 100 along the outer circumferential surface of the body 100 or may have a predetermined length at one end thereof. The screw blade (200) is configured such that the screw pile (10) can be rotationally press-fitted into the ground so that the screw pile (10) can be easily inserted into the ground. In addition, the screw blade 200 is a passage through which the gravel generated during drilling can move quickly to the outside. The screw blades 200 may be installed on the outer circumferential surface of the body 100 at various pitches and diameters along the longitudinal direction of the body 100, depending on the nature of the ground. For example, the screw pawl 10 may have a diameter P of the screw blade 200 of 2.3 to 2.5 times the diameter d of the body 100 and a diameter D of the screw blade 200 may be smaller than a diameter of the body 100 (P / D) of the pitch (P) to the diameter (D) of the screw vane 200 may be 1.2 to 1.5 while having a size 1.5 to 2.0 times the diameter d. Here, the diameter d of the body 100 is the outer diameter of the body 100, the pitch P of the screw vanes 200 is the distance of the screw vanes 200, and the diameter D of the screw vanes 200 is Means the outer diameter of the circle drawn by the screw blade 200.

A variety of materials can be used if the screw blade 200 satisfies the required strength, but the same type of material is used as the material of the body 100 for ease of manufacture.

The grouting hole 300 has a structure in which a plurality of holes are drilled so that the grouting solution can be injected onto the outer circumferential surface of the body 100. The grouting holes 300 may be formed to face each other along the circumferential direction of the body 100. For example, the grouting holes 300 may be provided such that two or four grouting holes 300 are opposed to each other. In the case where two grouting holes 300 are formed to pass through the side surface of the body 100 so as to face each other, the amount of discharged water to the inside of the body 100 is increased through the end of the opened body 100 There is an effect that can be. In the case where the four grouting holes 300 are formed to pass through the side surface of the body 100 so as to face each other, the time required for penetrating the screw piles 10 into the ground of the same depth can be reduced. The grouting holes 300 may be provided at a plurality of side surfaces of the body 100 at regular intervals along the longitudinal direction of the body 100. The spacing may vary depending on the material of the ground where the screw piles 10 are drilled The grouting holes 300 may be formed at an interval of 1 meter, for example. It is effective that the grouting holes 300 are alternately arranged in the longitudinal direction of the body 100 so as to allow the grouting solution to penetrate evenly around the peripheries of the perforated ground.

The end extension reinforcing plate 400 is formed in a circular plate shape so that one end of the body 100 is coupled to the upper surface and the air discharge hole 410 is pierced through the upper and lower surfaces so as to be positioned on the straight line with the through hole 110 . The diameter of the end extension reinforcing plate 400 should be smaller than the diameter of the member to which the body 100 and the screw blade 200 are coupled. In addition, the end extension reinforcing plate 400 is mounted on the bottom of the perforation hole in the shape of a circular plate, so that it is easy to secure the end supporting force. In other words, since the end extension reinforcing plate 400 is supported on the bottom surface of the perforation hole, the end supporting plate 400 can receive the end supporting force equal to the sectional area of the end extension reinforcing plate 400, so that a larger compression load can be received. Therefore, since the end supporting force is secured by the applied end expanding reinforcing plate 400, the frictional force of the main surface is reduced in the tensile and compressive force required. For example, if the construction file is a micro-file, the length of fixation to be secured can be reduced. As the length of the micro-file is reduced, the cost of the drilling process and the grouting solution injection cost can be reduced, Can be expected. As another example, in the case of a simple file, it is possible to reduce the number of files to be installed because the supporting force of the tip can be increased.

The air discharge hole 410 is a hole through which air is blown out so that the gravel generated by the excavating bit can be taken out to the outside. The air discharge hole 410 may be formed to have a diameter of 10 to 30 mm, for example, so that the air discharge hole 410 can be taken out to the outside by the air to be injected.

The end extension reinforcing plate 400 further includes an engagement groove 420 formed on an upper surface of the air discharge hole 410 to fit the end of the body 100, 100 may be inserted into the coupling groove 420 and coupled. The end extension reinforcing plate 400 may be coupled with the body 100 by various methods such as welding when the end extension reinforcing plate 400 and the body 100 are coupled. In order to facilitate coupling, a coupling groove 420 may be formed on one side of the end extension reinforcing plate 400. The coupling groove 420 is formed as a circular groove in the cross section of the air discharge hole 410. The coupling groove 420 is formed to be larger than the outer diameter of the body 100 so that the body 100 can be easily inserted. In addition, when a thread is formed on the inner surface of the coupling groove 420 and the threaded line corresponding to one end of the body is provided, the end extension reinforcing plate 400 and the body 100 can be coupled in a bolt-coupled manner. When the coupling groove is formed in the end extension reinforcing plate 400, the end extension reinforcing plate 400 can be manufactured in a large quantity and can be easily combined with the body whenever necessary to produce the screw pile 10.

In addition, the end extension reinforcing plate 400 further includes a plurality of soil discharge holes 430 through which upper and lower surfaces are perforated on one side of the upper surface, So that the generated soil is discharged to the outside. The gravel-discharging hole 430 may have a variety of diameters at one side of the extensible gusset plate 400 so that the gravel generated at the time of perforation can be easily discharged to the outside. For example, the diameter may be 10 to 40 mm. The gravel-discharging holes 430 may be formed in four to eight holes on one side of the end extension reinforcing plate 400.

In addition, the distal end reinforcing plate 400 may have a circular plate shape cut in a direction perpendicular to the longitudinal direction of the body 100, and the incised portions may be twisted to be spaced apart at regular intervals. In this case, the air discharge hole 410 is pierced by the diameter of the body 100, so that the end extension reinforcing plate 400 is easily coupled to the body 100 and the end extension reinforcing plate 400 is inserted into the screw blades 200 ) Can play a role to facilitate the excavation of the ground easily.

In the present invention, the air injection hole 350 may be formed in the outer peripheral surface of the body 100 at a position close to the end extension reinforcing plate 400. The air spray hole 350 is a hole through which air is blown out to discharge the gravel generated when excavating the gravel on the upper surface of the end extension reinforcing plate 400 without discharging it to the outside. For example, the air injection hole 350 is formed to be inclined downward from the inner circumferential surface to the outer circumferential surface, so that the gravel on the upper surface of the end extension reinforcing plate 400 can be easily discharged .

FIG. 6 is a perspective view showing a third embodiment of the screw file of the present invention, and FIG. 7 is an exploded perspective view of FIG. 6. FIG.

Fig. 8 is a sectional view of Fig. 6, and Fig. 9 is a bottom view of Fig. 6. Fig.

The present invention can further connect auxiliary screw blades to the outer circumferential surface of the end extension reinforcing plate 400 so that the screw file can be easily inserted into the ground. Specifically, the end extension reinforcing plate 400 may be formed in a spiral shape on the outer peripheral surface and may further include an auxiliary screw blade 250 integrally installed on the end extension reinforcing plate 400. A plurality of auxiliary screw blades 250 may be installed so that the screw piles can be easily inserted into the ground, and may be installed according to the shape of the screw blades 200. For example, the auxiliary screw blade 250 may be formed in a spiral shape on the outer peripheral surface of the end extension reinforcing plate 400 so that one end of the auxiliary screw blade 250 is engaged with one end of the screw blade 200.

A variety of materials may be used for the secondary screw vane 250 if the required strength is satisfied. For the convenience of manufacturing, the secondary screw vane 250 may be made of the same material as the end extension reinforcing plate 400.

Although the preferred embodiments of the ground reinforcement screw pile having the end extension reinforcing plate according to the present invention have been described above, the present invention is described as at least one embodiment, and the technical idea, And the scope of the technical idea of the present invention is not limited to or limited by the description with reference to the drawings or the drawings. It will also be appreciated by those skilled in the art that the concepts and embodiments of the invention set forth herein may be used as a basis for modifying or designing other structures for carrying out the same purposes of the present invention It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. And various changes, substitutions, and alterations can be made without departing from the scope of the invention.

10: Screw file
100: Body 110: Through-hole
200: screw blade 250: auxiliary screw blade
300: grouting ball 350: air blowing hole
400: End extension plate
410: air discharge hole 420: coupling groove
430: Earth discharge ball
500: Excavation bit

Claims (9)

In a ground reinforcement file capable of excavating a ground,
A rod-shaped body 100 having a through-hole 110 formed therein for passage of air and a grouting solution;
A screw blade 200 formed in a spiral shape along the outer circumferential surface of the body 100 and integrally installed in the body 100;
A grouting hole (300) in which a plurality of holes are drilled so that a grouting solution can be sprayed to an outer peripheral surface of the body (100);
The air discharge hole 410 is formed in the shape of a circular plate so that one end of the body 100 is coupled to the upper surface and the air discharge hole 410 is aligned with the through hole 110, ); And
And an excavating bit (500) having a cutting edge formed at the other end and having one end coupled to one side of the lower surface of the end extension reinforcing plate (400)
Wherein the drilling bit (500) and the screw vane (200) rotate to puncture the ground, and then the end extension reinforcing plate (400) is seated on the bottom surface of the perforated hole, Screw file for reinforcing soil combined with extended reinforcement plate. The method according to claim 1,
Wherein an air injection hole (350) is formed in an outer peripheral surface of the body (100) at a position close to the end extension reinforcing plate (400). 3. The method of claim 2,
The air injection holes 350
Wherein the reinforcing plate is formed so as to be inclined downward from the inner circumferential surface toward the outer circumferential surface. The method according to claim 1,
The end extension reinforcing plate 400 may further include a coupling groove 420 formed at a portion of the upper surface of the air discharge hole 410 where the air discharge hole 410 is formed to fit a size of one end of the body 100,
Wherein one end of the body (100) is inserted into the engaging groove (420) and engaged with the engaging groove (420). The method according to claim 1,
The end extension reinforcing plate 400 may further include a plurality of soil discharge holes 430 through which upper and lower surfaces are perforated on one side of the upper surface,
Wherein the gravel-discharging hole (430) allows the gravel generated when the excavating bit (500) is excavated to be discharged to the outside. The method according to claim 1 or 4,
The end extension reinforcing plate (400) further includes an auxiliary screw blade (250) formed in a spiral shape on the outer peripheral surface and integrally installed on the end extension reinforcing plate (400) Screw file for reinforcement of ground. The method according to claim 6,
The auxiliary screw blades (250)
Wherein one end of the screw is formed in a spiral shape on an outer circumferential surface of the end extension reinforcing plate so as to be engaged with one end of the screw vane. The method according to claim 1,
And one or more bodies 100 formed with the grouting holes 300 are formed on the outer circumferential surface of the other end of the body 100 according to the depth of excavation. Reinforcing screw files. The method according to claim 1,
Wherein the end extension reinforcing plate 400 is formed such that a part of a circular plate is cut in a direction perpendicular to the longitudinal direction of the body 100 and the cut portions are twisted to be spaced apart at regular intervals. Combined soil reinforcement screw file.

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