KR20200089837A - Helix pile - Google Patents

Abstract

According to one embodiment of the present invention, a helix pile includes: a front end pile to which a rotating wing is connected and in which an inserting part is formed on an end portion; a coupler inserted into the inserting part and having a slide key protruding from an inner surface toward the inserting part; and a connecting pile connected to an end portion of the coupler and having the inserting part at the other end portion, wherein the inserting part includes a wall connected to the inner surface and coming in contact with the slide key of the coupler. The helix pile can improve resistance performance with respect to a tensile load.

Description

Helix file {HELIX PILE}

The present invention relates to a helix file.

In general, when a building or structure is erected, a foundation work is performed to reinforce the ground to support the upper structure according to the conditions of the ground or the load of the structure. For example, if a ground that is in contact with a structure, such as a hard ground, has sufficient strength to support it, the foundation work can be carried out directly on it, but in the case of a soft ground, a pile is used to prevent ground subsidence. After performing the designated construction to drive the ground or to improve the ground, the ground is reinforced, and then the basic construction is performed thereon.

At this time, the file to be constructed on the soft ground is divided into steel pipe file, PC file, PHC file, etc. according to its material, and also, according to its shape and use, it is divided into steel file, tubular file, H-beam, etc. In soft ground, tubular files are commonly used.

In addition, helix pile (Helix pile) is a method of reinforcement by grouting by intruding into the ground through rotational movement by attaching a spiral helix to a high-strength steel pipe pile. Therefore, there is an effect that can secure excellent stability in compression and tensile load through the upper and lower ends or frictional support through the blades provided in the pile.

Helix piles have a certain length, so in some cases, they must be connected to each other. In this case, it is common to use fastening parts such as pins or bolts penetrating the inserted and connected ends after each end is overlapped and inserted to connect each file to each other.

However, in the conventional connection method, it is difficult to insert rotations due to the lack of fastening force at the connection end, and when the helix file is rotated, each helix file rotates with each other. It becomes more vulnerable to the bending moment, which can cause vertical defects.

In addition, there was a shortcoming that the play is vulnerable to tensile load and the grouting effect is reduced due to the clearance caused by the perforated hole to penetrate the bolt through the pile.

One embodiment of the present invention is to provide a helix pile that can maintain the verticality of the helix pile and prevent grout leakage, and improve the resistance to tensile load.

According to an aspect of the present invention, a rotary blade is connected and a tip file having an insertion portion formed at an end, a coupler having a slide key protruding toward the insertion portion on the inner surface, connected to the end of the coupler, and the other end An insertion portion is formed in the connection file and the insertion portion is connected to the inner surface, and provides a helix file including a wall in contact with the slide key of the coupler.

The insertion portion may include an extension portion formed on one surface extending along an axial direction from one end portion of the insertion portion, and a fixing portion formed in a width greater than the width of the extension portion in communication with the extension portion end portion.

The coupler, a packing groove is formed on the inner surface, may further include a packing member connected to the packing groove.

The slide key may be formed such that the length in the width direction corresponds to the length in the width direction of the extension portion to be inserted into the extension portion.

The slide key may be formed with a through hole penetrating from one surface to the other surface contacting the inner surface of the coupler.

The diameter of the tip pile may be formed to be the same as the diameter of the connecting pile.

The coupler may further include a sleeve inserted therein.

The sleeve may be formed such that the outer diameter corresponds to the inner diameter of the coupler in order to pack between the connecting pile and the coupler.

The helix file according to an embodiment of the present invention may be easily connected to each file by applying a coupler to each end of the connection file and the tip file.

The helix pile according to an embodiment of the present invention is a method of inserting and using a slide key of a coupler, rather than a pin or bolt coupling method, and has excellent bonding strength and can prevent leakage of grout material during grouting.

Since the helix pile according to an embodiment of the present invention is coupled by a coupler and there is no play, the resistance performance against tensile load can be improved.

The helix file according to an embodiment of the present invention can easily manufacture and weld a coupler and a slide key, thereby reducing manufacturing cost and processing cost.

1 is a perspective view of a helix pile according to an embodiment of the present invention.
2 is an exploded perspective view of a helix pile according to an embodiment of the present invention.
3 is an exploded perspective view of a portion of a helix pile according to an embodiment of the present invention.
Figure 4 is a perspective view showing the combined state of the helix pile of an embodiment of the present invention.
5 is a perspective view showing a combined state of the helix pile of an embodiment of the present invention.
6 is an exploded perspective view showing a connection state of neighboring connection files according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily practice. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. In the drawings, parts not related to the description are omitted in order to clearly describe the present invention, and the same reference numerals are attached to the same or similar elements throughout the specification.

In this specification, the terms "include" or "have" are intended to indicate the presence of features, numbers, steps, actions, components, parts or combinations thereof described in the specification, but one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance. In addition, when a part such as a layer, film, region, plate, etc. is said to be "above" another part, this includes not only the case "directly above" the other part but also another part in the middle. Conversely, when a portion of a layer, film, region, plate, or the like is said to be “under” another portion, this includes not only the case “underneath” another portion, but also another portion in the middle.

1 is a perspective view of a helix pile according to an embodiment of the present invention. 2 is an exploded perspective view of a helix pile according to an embodiment of the present invention. Figure 3 is an exploded perspective view of the coupling portion of the helix pile according to an embodiment of the present invention.

As illustrated in FIG. 1, the head portion 70 is defined as the upper side in the tip pile 10, and the tip file 10 side is defined as the lower side in the head portion 70.

Referring to FIG. 1, the helix pile 1 is a structure that is rotationally penetrated into the ground for reinforcement of the ground, and includes a tip pile 10, a rotating blade 11, a connecting pile 30, a coupler 50, and a head portion ( 70). At this time, a plurality of connection files 30 may be provided and connected according to the depth of entry of the helix file 1, and accordingly, the total length of the helix file 1 may be extended.

The tip pile 10 has a hollow circular pipe shape, and one end may be sharply formed to easily dig in the installation direction when the tip pile 10 is installed on the ground. On the outer surface of the tip pile 10, a plurality of rotary blades 11 may be formed.

The rotary blade 11 can be penetrated into the ground while the tip pile 10 is rotated and rotated at the same time. The rotary blade 11 provides a function for supporting the stress applied in the vertical direction after the helix pile 1 is penetrated into the ground or after being penetrated into the ground. When the helix pile 1 is penetrated into the ground, the rotary blade 11 simultaneously supports the compressive stress formed vertically downward and the tensile stress formed vertically upward against the compressive stress and transmits it to the ground, while transmitting the helix pile ( It can provide structural stability to 1).

The connecting pile 30 is a hollow circular pipe shape, and may be formed to have the same diameter as the diameter of the tip pile 10. The connecting file 30 may be connected to the upper end of the tip file 10 and the coupler 50, and a plurality of connecting files 30 may be continuously connected according to the depth of penetration, and accordingly, the helix file 1 The total length can be extended.

At this time, the coupler 50 is located between each connection file 30 and the tip file 10 and between the adjacent connection files 30, so that each file can be connected to each other by the coupler 50.

The head portion 70 may be connected to the upper end portion of the helix pile 1 which is configured by connecting the tip pile 10 and the connecting pile 30. For example, the head portion 70 may be coupled with a driving body that rotates and presses the helix pile 1 while the helix pile 1 is installed in the ground, and also a structure fixed to the ground after installation in the ground is completed. It can also be installed on.

2 and 3, the coupler 50 is connected to the lower end of the connection file 30, and the upper end of the tip file 10 and the connection file 30 is coupled to the coupler 50 so as to be coupled. Insertions 10a and 30a may be formed.

The coupler 50 has a hollow circular pipe shape and may be formed to have a predetermined length. At this time, the inner diameter of the coupler 50 may be formed to correspond to the outer diameter of the connecting file 30 and the tip file 10 so that the connecting file 30 and the tip file 10 can be drawn into the interior space. have. For example, the coupler 50 may be inserted into the connection file 30 and fixed. Accordingly, when the connection file 30 is rotated, the coupler 50 fixed to the connection file 30 can be rotated together.

A packing groove 51 may be formed along the circumferential surface at the lower end of the inner surface of the coupler 50. The packing groove 51 may be formed to extend a predetermined length in the vertical direction, and the packing member 52 may be connected to the packing groove 51.

The packing member 52 may be formed in a ring shape to correspond to the packing groove 51. For example, the height of the packing member 52 may be formed smaller than 1/2 of the height of the packing groove 51. In addition, the packing member 52 is formed to have a predetermined thickness, and is in close contact with the outer surface of the insertion portion 10a when the insertion portion 10a of the tip file 10 is inserted through the lower side of the coupler 50. Can be. Accordingly, the packing groove 51 can seal the gap between the coupler 50 and the insertion portion 10a, so that inflow of soil from the outside can be prevented.

In addition, since the packing groove 51 is formed to extend more than the length of the packing member 52 in the height direction, when the helix pile 1 is drawn in or out of the ground, the packing member 52 opens the packing groove 51. Therefore, it can move up and down. Accordingly, the packing member 52 may not be crushed or compressed while connected to the packing groove 51.

On the other hand, the coupler 50 may be provided with a slide key 53 that is formed to have a predetermined thickness on the inner surface to protrude. In addition, the slide key 53 may be formed of a metal material to have sufficient rigidity and durability, and may be fixed by welding to the inner surface of the coupler 50.

For example, the slide key 53 in contact with the inner surface of the coupler 50 is formed with a through hole 53a penetrating the other side from one side, the circumference of the through hole 53a and the outer periphery of the slide key 53. The side can be joined to the inner surface of the coupler 50 by welding.

Meanwhile, insertion holes 13 and 33 are formed in the insertion portions 10a and 30a of the front end file 10 and the connection file 30 so that the slide keys 53 of the coupler 50 can be inserted and coupled, respectively. , Walls 15 and 35 may be disposed on the inner surfaces of each of the insertion portions 10a and 30a.

The insertion holes 13 and 33 may be formed so that the outside and the inside are connected at one surface of the insertion portions 10a and 30a of each file. For example, the insertion holes 13 and 33 may have an inner width larger than an outer width. As another example, the insertion holes 13 and 33 may be formed in each file through a laser cutting process, and each file is automatically cut into a desired shape through a laser cutting machine, and it has an accurate dimension, so it is easy to manufacture. There is this.

The insertion hole 13 may include an extension portion 13a and a fixing portion 13b. The extension portion 13a may be formed to extend along the axial direction of the insertion portion 10a. The fixed portion 13b is formed to be connected to the extended portion 13a at the lower end of the extended portion 13a, and may be formed to have a width greater than the width of the extended portion 13a. Accordingly, the insertion hole 13 may be formed in an overall “iron” shape.

Accordingly, when the slide key 53 is inserted through the extension portion 13a of the insertion hole 13 to the fixing portion 13b, the slide key 53 is fixed by the rotation of the helix file 1 ( It can slide to the left or right along 13b), and can be locked while being inserted into the insertion hole 13.

The walls 15 and 35 are disposed inside the insertion portions 10a and 30a, and a cross section may be formed in a circular arc shape to maintain a state in close contact with the inner surfaces of the insertion portions 10a and 30a. For example, the walls 15 and 35 may be formed by cutting a pipe having an outer diameter equal to the inner diameter of the tip pile 10 and the connecting pile 30 in the axial direction.

Further, the width and the axial length of the walls 15 and 35 may be formed in a state corresponding to or longer than the width and the axial length of the insertion holes 13 and 33. At this time, the walls 15 and 35 may be disposed at positions corresponding to the insertion holes 13 and 33. Accordingly, the space opened by the insertion holes 13 and 33 is closed, so that leakage of grout material can be prevented during grouting.

At this time, the slide key 53 has a predetermined thickness so that the other surface formed on the opposite side of one surface contacting the inner surface of the coupler 50 can contact one surface of the wall 15 through the insertion holes 13 and 33. It can be formed protruding. That is, when the coupler 50 is rotated, the slide key 53 can be stably fixed to the insertion holes 13 and 33 because no play occurs when sliding along the outer surface of the wall while in contact with the walls 15 and 35. have.

Figure 4 is a perspective view showing the combined state of the helix pile of an embodiment of the present invention. 5 is a perspective view showing a combined state of the helix pile of an embodiment of the present invention.

4 and 5, the insertion portion 10a of the tip file 10 located at the bottom and the connection file 30 located at the top may be coupled by the coupler 50. The insertion portion 10a may be drawn through the lower end of the coupler 50, and the lower end of the connection file 30 may be drawn through the upper end of the coupler 50. At this time, the sleeve 37 is fixed to the inner upper end of the coupler 50. Since the sleeve 37 is a hollow circular pipe shape formed to a predetermined length, the connection pile 30 is drawn into the sleeve 37 and thus can be drawn through the top of the coupler 50. That is, the sleeve 37 may be located between the connection file 30 and the coupler 50.

For example, the inner diameter of the sleeve 37 is formed to correspond to the outer diameter of the connecting pile 30, and can be connected in close contact with the outer surface of the connecting pile 30. In addition, the outer diameter of the sleeve 37 is formed to correspond to the inner diameter of the coupler 50, and can be in contact with the inner surface of the coupler 50 while being inserted inside the coupler 50. Accordingly, the gap between the coupler 50 and the connecting file 30 can be sealed by the sleeve 17, preventing leakage of the grout material through the gap during grouting, thereby increasing the grouting injection efficiency, and the sleeve 37 It can be fixed to the connection file 30 and the coupler 50 by welding.

Further, the slide key 53 fixed to the inner surface of the coupler 50 may be inserted into the insertion hole 13 formed in the insertion portion 10a of the tip file 10. Insertion hole 13 is one side is closed by the wall 15, the other side is closed by the inner surface of the coupler 50, the slide key 53 can be stably inserted into the insertion hole 13 .

The slide key 53 may be formed to have a width corresponding to the width of the extension portion 13a of the insertion hole 13. Accordingly, the slide key 53 can be inserted into the fixing portion 13b through the extension portion 13a.

As shown in FIG. 5, when the upper connection file 30 is rotated in one direction, the slide key 53 slides along the fixing portion 13b to be in contact with one side of the vertical portion of the fixing portion 13b.

In addition, the length of the vertical direction of the slide key 53 may be formed to correspond to the height of the fixing portion 13b, so that the upper and lower sides of the slide key 53 may contact the upper and lower sides of the fixing portion 13b. . Accordingly, when the connection file 30 is rotated in one direction, the slide key 53 moves to one side while being inserted into the fixing portion 13b, engages with one side of the fixing portion 13b, and connects the tip file 10 and Files 30 can be combined. At this time, when the upper connection file 30 is re-rotated to one side, the slide key 53 of the coupler 50 transmits contact rotational force to one side of the vertical surface and the lower side of the fixing portion 13b, thereby leading to the tip file 10 and The connecting file 30 can be rotated in one direction at the same time and penetrated into the ground.

6 is an exploded perspective view showing a connection state of neighboring connection files according to an embodiment of the present invention.

On the other hand, when two or more connection files 30 are combined as shown in FIG. 6, in the upper portion of each connection file 30 for insertion between two neighboring connection files 30, an insertion hole 33 and a connection file Insertion portion (30a) including a wall (35) disposed on the upper inner surface of the (30) can be formed, each of these components is the insertion hole 13 of the tip pile 10 shown in FIG. It may be formed in the same manner as the insertion portion (10a) including the wall (15). In addition, a coupler 50 may be positioned between each connection file 30.

Accordingly, as shown in Figure 6, the helix file 1 composed of a plurality of connection files 30, the lower end of the connection file 30 located above, and the insertion portion of the connection file 30 located below ( 30a) may be connected by a coupler 50.

When the helix file configured as described above is rotated in one direction as shown in FIGS. 4 and 5, the slide key 53 moves to one side while being inserted into the fixing part 33b. , Two adjacent connection files 30 may be engaged by engaging one side of the fixing part 33b.

At this time, when the upper connection file 30 is re-rotated to one side, the slide key 53 of the coupler 50 transmits contact rotational force to one side of the vertical surface and the lower side of the fixing part 33b, and the connection file connected to the lower side 30 and the tip pile 10 can be simultaneously penetrated into the ground while rotating in one direction.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention may add elements within the scope of the same spirit. However, other embodiments may be easily proposed by changing, deleting, adding, or the like, but this will also be considered to be within the scope of the present invention.

1: Helix file 10: Lead file
10a, 30a: Insertion part 11: Rotary wing
13, 33: insertion hole
13a,33a: extension 13b,33b: fixing
15, 35: wall 37: sleeve
30: connection file 50: coupler
53: slide key 53a: through hole

Claims (8)

A tip file to which a rotary blade is connected and an insertion portion is formed at an end portion;
A coupler having a slide key protruding toward the insert on the inner surface;
A connection file connected to the end of the coupler and having an insertion portion formed at the other end; And
The insertion portion,
A helix file connected to an inner surface and including a wall contacting the slide key of the coupler. According to claim 1,
The insertion portion,
An extension formed on one surface extending along the axial direction from one end of the insert; And
A helix pile comprising a fixed portion in communication with the end portion of the extension portion and having a width greater than the width of the extension portion. According to claim 1,
The coupler,
A packing groove is formed on the inner surface, and a helix file further comprising a packing member connected to the packing groove. According to claim 2,
The slide key,
The helix file is formed such that the length in the width direction corresponds to the length in the width direction of the extension portion to be inserted into the extension portion. According to claim 1,
The slide key,
The helix pile is formed with a through hole penetrating from one surface to the other surface contacting the inner surface of the coupler. According to claim 1,
The diameter of the tip pile,
A helix file formed to be the same as the diameter of the connection file. According to claim 1,
The coupler,
Helix file further comprising a sleeve that is inserted therein. The method of claim 7,
The sleeve,
In order to pack between the connection pile and the coupler, a helix pile is formed so that the outer diameter corresponds to the inner diameter of the coupler.

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