KR102325920B1 - Helix pile - Google Patents

Abstract

Helix file according to an embodiment of the present invention, the rotary blade is connected to the front end file with an insertion portion formed at the end; a coupler having a slide key protruding toward the inserting part on an inner surface of the inserting part; a connection file connected to an end of the coupler and having an insertion portion formed at the other end; and the insertion part, which is connected to the inner surface, and includes a wall in contact with the slide key of the coupler.

Description

helix file {HELIX PILE}

The present invention relates to a helix pile.

In general, when a building or structure is erected, the foundation work to reinforce the ground is performed to support the structure above it according to the conditions of the ground or the load of the structure. For example, if the ground in contact with the structure, such as hard ground, has sufficient strength to support it, the foundation work can be carried out directly on it, but in the case of otherwise soft ground, piles are used to prevent subsidence. After reinforcing the ground by carrying out the designated work to drive or improve the ground, the foundation work is performed on it.

At this time, the piles constructed on the soft ground are divided into steel pipe piles, PC piles, PHC piles, etc. according to the material, and also divided into steel pile piles, tubular piles, H-beam piles, etc. according to the shape and use, In soft ground, tubular piles are generally used.

In addition, helix pile is a method of reinforcing by grouting by attaching a spiral blade to a high-strength steel pipe pile and penetrating the ground through rotational motion. Therefore, there is an effect of securing excellent stability under compression and tensile loads through the upper and lower ends or frictional support force through the blades provided in the pile.

Since the helix pile has a certain extension length, it must be used in connection with each other in some cases. At this time, in order to connect each file to each other, it is common to use a fastening part such as a pin or a bolt penetrating the inserted end after each end is overlapped and inserted.

However, in this conventional connection method, due to insufficient fastening force at the connecting end, each helix file rotates in vain during rotation of the helix file, making it difficult to insert rotation, and a play occurs at the connecting end portion, which occurs at a constant depth from the ground surface. It becomes more vulnerable to the bending moment, which may cause verticality defects.

In addition, there was a disadvantage that a gap was generated by the drilled hole for penetrating the bolt in the pile, so it was vulnerable to tensile load and the grouting effect was reduced.

One embodiment of the present invention is to provide a helix pile capable of maintaining verticality of the helix pile and preventing grout re-leakage, and improving resistance performance against tensile load.

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

The insertion part may include an extended part extending along the axial direction from one end of the insertion part on one surface, and a fixing part communicating with the extended part end and having a width greater than a width of the extended part.

The coupler may further include a packing member having a packing groove formed on its inner surface and connected to the packing groove.

The slide key may be formed to have a width direction length corresponding to a width direction length of the extension portion to be inserted into the extension portion.

The slide key may have a through hole penetrating from one surface in contact with the inner surface of the coupler to the other surface.

The diameter of the tip pile may be the same as the diameter of the connection pile.

The coupler may further include a sleeve inserted therein.

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

The helix pile according to an embodiment of the present invention can be easily made by applying a coupler to each end of the connection pile and the tip pile to connect each pile.

The helix file according to an embodiment of the present invention is not a pin or bolt coupling method, but is inserted and coupled using a slide key of a coupler, and has excellent coupling force and can prevent leakage of the grout material during grouting.

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

The helix file according to an embodiment of the present invention can reduce manufacturing and processing costs because it is easy to manufacture and weld a coupler and a slide key.

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 the coupling part side of the helix pile according to an embodiment of the present invention.
4 is a perspective view showing the coupling state of the helix pile according to an embodiment of the present invention.
5 is a perspective view illustrating a coupled state of a helix pile according to an embodiment of the present invention.
Figure 6 is an exploded perspective view showing the connection state of the adjacent connection file according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof. Further, when a part of a layer, film, region, plate, etc. is said to be “on” another part, this includes not only the case where the other part is “directly on” but also the case where there is another part in between. Conversely, when a part of a layer, film, region, plate, etc. is said to be “under” another part, this includes not only cases where it is “directly under” another part, but also a case where another part is in between.

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 side of the helix pile according to an embodiment of the present invention.

As shown in FIG. 1 , in the tip pile 10 , the head portion 70 side is defined upward, and the tip pile 10 side is defined downward in the head portion 70 .

Referring to Figure 1, the helix pile (1) is a structure that rotatably penetrates the ground for ground reinforcement, the tip pile 10, the rotary blade 11, the connection pile 30, the coupler 50, the head part ( 70) may be included. In this case, a plurality of connection piles 30 may be provided and connected according to the penetration depth of the helix pile 1 , and thus the total length of the helix pile 1 may be extended.

The tip pile 10 has a hollow circular pipe shape, and when the tip pile 10 is installed in the ground, one end may be formed to be sharp so that it can be easily dug in the installation direction. A plurality of rotary blades 11 may be formed on the outer surface of the tip file 10 .

The rotary blade 11 may be penetrated into the ground while rotating at the same time when the tip file 10 is rotated. The rotary blade 11 provides a function of supporting the helix pile 1 against the stress applied in the vertical direction in order to penetrate into the ground or after penetrating into the ground. The rotary blade 11 simultaneously supports the compressive stress formed vertically downward and the tensile stress formed vertically upward to oppose the compressive stress when the helix pile 1 penetrates into the ground, while transmitting the helix pile ( 1) can provide structural stability.

The connection pile 30 has a hollow circular pipe shape, and may be formed to have the same diameter as the diameter of the tip pile 10 . The connection pile 30 may be connected to the upper end of the tip pile 10 through the coupler 50, and a plurality of connection piles 30 may be continuously connected according to the depth of the insertion, and thus the helix pile 1 The total length may be extended.

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

The head part 70 may be connected to the upper end of the helix pile 1 configured by connecting the tip pile 10 and the connection pile 30 . For example, a driving body for rotating and press-fitting the helix pile 1 may be coupled to the head part 70 while the helix pile 1 is installed underground, and also a structure fixed to the ground after installation in the ground is completed. may be installed in

2 and 3 , the coupler 50 is connected to the lower end of the connection pile 30 , and the top of the tip pile 10 and the connection pile 30 is coupled with the coupler 50 so that it can be coupled. Insertion portions 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 connection pile 30 and the tip pile 10 so that the connection pile 30 and the tip pile 10 can be drawn into the inner space. have. For example, the coupler 50 may be inserted into and fixed to the connection pile 30 . Accordingly, when the connection pile 30 is rotated, the coupler 50 fixed to the connection pile 30 can rotate 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 to be 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 pile 10 is inserted through the lower side of the coupler 50 . can be Accordingly, the packing groove 51 can pack the gap between the coupler 50 and the insertion part 10a, and thus the inflow of soil from the outside can be prevented.

In addition, since the packing groove 51 is formed to extend further than the height direction length of the packing member 52 , when the helix pile 1 is drawn into or withdrawn into the ground, the packing member 52 closes the packing groove 51 . 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 is formed to have a predetermined thickness on the inner surface, the slide key 53 which is formed to protrude may be installed. In addition, the slide key 53 may be formed of a metal material to have sufficient rigidity and durability, and may be welded and fixed 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 from one side to the other side, the circumference of the through hole 53a and the outside of the slide key 53 . The side may be joined to the inner surface of the coupler 50 by welding.

On the other hand, insertion holes 13 and 33 are formed in the insertion portions 10a and 30a of the tip file 10 and the connection file 30 so that the slide key 53 of the coupler 50 can be inserted and coupled thereto. , walls 15 and 35 may be disposed on the inner surface 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 on one surface of the insertion part 10a, 30a of each file. For example, the insertion holes 13 and 33 may be formed to have an inner width greater 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 is possible to have accurate dimensions, so manufacturing is easy. There is this.

The insertion hole 13 may include an extension part 13a and a fixing part 13b. The extension portion 13a may extend along the axial direction of the insertion portion 10a. The fixing part 13b is formed to be connected to the extension part 13a at the lower end of the extension part 13a, and may be formed to have a width greater than the width of the extension part 13a. Accordingly, the insertion hole 13 may be formed in a "convex" shape as a whole.

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 moved to the fixing portion ( It can slide left or right along 13b), and can be locked while being inserted into the insertion hole 13 .

The walls 15 and 35 are disposed on the inside of the inserts 10a and 30a, and the cross-section may be formed in an arc shape in order to maintain a state in close contact with the inner surfaces of the inserts 10a and 30a. For example, the walls 15 and 35 may be formed by cutting a pipe having the same outer diameter as the inner diameter of the tip pile 10 and the connection pile 30 in the axial direction.

In addition, the width and axial length of the walls 15 and 35 may be formed in a state corresponding to or longer than the width and axial length of the insertion holes 13 and 33 . In this case, the walls 15 and 35 may be disposed at positions corresponding to the insertion holes 13 and 33 . Accordingly, by closing the space opened by the insertion holes 13 and 33, the leakage of the grout material can be prevented during the grouting construction.

At this time, the slide key 53 has a predetermined thickness so that the other surface formed on the opposite side of the one surface in contact with the inner surface of the coupler 50 can contact one surface of the wall 15 through the insertion holes 13 and 33 . A protrusion may be formed. That is, when the coupler 50 rotates, the slide key 53 slides along the outer surface of the wall while in contact with the walls 15 and 35, so there is no play, so it can be stably fixed to the insertion holes 13 and 33 have.

4 is a perspective view illustrating a coupling state of a helix pile according to an embodiment of the present invention. 5 is a perspective view illustrating a coupling state of a helix pile according to an embodiment of the present invention.

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

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

In addition, 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 . One side of the insertion hole 13 is closed by the wall 15 , and the other side is closed by the inner surface of the coupler 50 , so that the slide key 53 can be stably inserted and coupled to 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 may be inserted into the fixing part 13b through the extension part 13a.

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

In addition, the vertical length of the slide key 53 may be formed to correspond to the height of the fixing part 13b, so that upper and lower sides of the slide key 53 may contact the upper and lower sides of the fixing part 13b. . Accordingly, when the connection file 30 rotates in one direction, the slide key 53 moves to one side while being inserted into the fixing portion 13b, and engages with one side of the fixing portion 13b to engage the tip file 10 and the connection. The file 30 may 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 a contact rotational force to one side vertical surface and the lower side of the fixing part 13b, the tip file 10 and The connection pile 30 may rotate in one direction at the same time and penetrate the ground.

Figure 6 is an exploded perspective view showing the connection state of the adjacent connection file according to an embodiment of the present invention.

On the other hand, when two or more connection files 30 are coupled as shown in FIG. 6 , an insertion hole 33 and a connection file are provided at the upper end of each connection file 30 for coupling between two adjacent connection files 30 . The insertion part 30a including the wall 35 disposed on the upper inner surface of the 30 may be formed, and each of these configurations is the insertion hole 13 of the tip file 10 shown in FIG. 2 , 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 pile 30 .

Accordingly, as shown in FIG. 6 , the helix file 1 composed of a plurality of connection files 30 includes the lower end of the connection file 30 located on the upper side and the insertion part of the connection file 30 located on the lower side ( 30a) may be connected by a coupler 50 .

As shown in FIGS. 4 and 5, when the helix file configured as above is rotated in one direction, the slide key 53 moves to one side while being inserted into the fixing part 33b. , two adjacent connection piles 30 engaged with one side of the fixing part 33b may 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 a 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) rotate in one direction at the same time and can be penetrated into the ground.

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 who understand the spirit of the present invention can add components within the scope of the same spirit. , changes, deletions, additions, etc. may easily suggest other embodiments, but this will also fall within the scope of the present invention.

1: Helix file 10: Tip file
10a, 30a: insert part 11: rotary blade
13, 33: insertion hole
13a, 33a: extended part 13b, 33b: fixed part
15, 35: wall 37: sleeve
30: connection file 50: coupler
53: slide key 53a: through hole

Claims (8)

a tip file having a rotary blade connected thereto and an insertion part formed at the end;
a coupler having a slide key protruding toward the inserting part on an inner surface of the inserting part; and
It is connected to the end of the coupler, and includes a connection file in which an insertion part is formed at the other end,
The insert is
It is connected from the inner surface to close the open space, and is in contact with the slide key, the cross section is formed in an arc shape to maintain a state in close contact with the inner surface of the insertion part, and is located only in a portion in contact with the slide key, and the tip file and an outer diameter equal to the inner diameter of the connecting pile, and a wall formed in the axial direction. and
It is formed so that the outside and the inside are connected on one surface of the tip file, the slide key is inserted, and an insertion hole disposed to correspond to the outer surface of the wall,
The insertion hole is
an extension formed extending along the axial direction from one end of the insertion part on one surface; and
and a fixing part communicating with the end of the extension and having a width greater than the width of the extension,
The coupler is
a packing member having a packing groove formed on the inner surface and connected to the packing groove; and
It is inserted therein, and for packing between the connection file and the coupler, it includes a sleeve formed so that an outer diameter corresponds to the inner diameter of the coupler,
The slide key is
The width direction length is formed to correspond to the width direction length of the extension portion to be inserted into the extension portion, a through hole penetrating from one surface in contact with the inner surface of the coupler to the other surface is formed, and along the outer surface of the wall while in contact with the wall sliding,
The diameter of the tip file is,
Helix pile formed to be the same as the diameter of the connection pile.




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