KR101675884B1 - Helical pile and construction method thereof - Google Patents

Helical pile and construction method thereof Download PDF

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Publication number
KR101675884B1
KR101675884B1 KR1020160007202A KR20160007202A KR101675884B1 KR 101675884 B1 KR101675884 B1 KR 101675884B1 KR 1020160007202 A KR1020160007202 A KR 1020160007202A KR 20160007202 A KR20160007202 A KR 20160007202A KR 101675884 B1 KR101675884 B1 KR 101675884B1
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South Korea
Prior art keywords
file
shaft
coupler
extension
plate
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KR1020160007202A
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Korean (ko)
Inventor
황규원
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황규원
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/56—Screw piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
    • E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/22—Placing by screwing down
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/16—Shapes
    • E02D2200/1671—Shapes helical or spiral
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0038—Production methods using an auger, i.e. continuous flight type
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0018—Cement used as binder
    • E02D2300/002—Concrete

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The present invention relates to a grouting simultaneous installation type helical file in which an extension plate for extending a soil space is fixed while firmly connecting a front end file, a first shaft file, a first shaft file, and a second shaft file by a coupler and an extension part, .

Description

[0001] HELICAL PILE AND CONSTRUCTION METHOD THEREOF [0002]

The present invention relates to a helical file and a method of constructing the helical file, and more particularly, to a helical file and a method of constructing the helical file and the method of constructing the helical file. A helical file in which an extension plate is manufactured, and a construction method thereof.

As a method of constructing a pile for supporting a structure or a pile for reinforcing a ground, there is a method using a helical pile having a relatively small diameter.

FIG. 1 is a sectional view of the conventional helical pile 20, wherein the helical pile is a generally hollow tube type pile, and a plurality of helical rotary blades 21 are spaced apart from the outer circumferential surface of the helical pile 20, ) Is installed on the ground by rotating it.

After the helical pile 20 is rotated in the ground, the helical pile 20 is fixed to the support plate (not shown) using a fixing nut 50.

When the helical pile 20 is to be connected to each other by a limited length (for reasons of construction, transportation, etc.), the connection ends of the helical piles 20 are inserted to overlap each other, It is common to use fastening members 40 such as bolts and nuts.

In addition, since the helical pile 20 is a pile of a hollow shaft having a constant diameter, it is very susceptible to a bending moment (horizontal resistance) generated at a certain depth (approximately 5-10 m) from the ground surface There was no.

In other words, since the conventional helical pile 20 is a pipe member having a constant diameter and is constructed in the form of a small diameter pipe over the entire extension length, there is a problem that the lateral resistance force due to the earth pressure or the like acting on the upper portion is small.

Therefore, the conventional helical pile 20 is generally limited in the use of a support anchor body such as a structure or a wall having a small size, rather than being used as a base file having a deep depth.

On the other hand, in the construction of a conventional helical pile similar to the above helical pile 20, grouting is carried out by using a grouting packer installed in the uppermost shaft after continuously penetrating the shaft by penetrating the front end pile.

However, in the conventional helical file, concrete often leaks from the coupler portion of the uppermost shaft, so that it is not grouted up to the bottom of the helical file, and it is mixed with the soil, there was.

Korean Patent No. 10-1425879 filed on December 14, 2012, entitled "Helical file with buckling prevention structure and method of construction thereof" Korean Patent No. 10-1191289 filed on Sep. 6, 2012, entitled " Method of Construction of Double Helical File for Reducing Frictional Force on Other Subsurface Surfaces in Consolidated Settlement "

SUMMARY OF THE INVENTION [0006] In order to solve the above-mentioned problems, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method of manufacturing a shaft- The present invention is to provide a helical file and an installation method thereof, in which an expansion plate capable of greatly expanding the earth / sand space is provided.

It is another object of the present invention to provide an expansion plate capable of forming a deeper pore through an expanding blade formed on both sides of an expanding plate and an expanding plate having a diameter two times larger than that of the tip end file, the first shaft file and the second shaft file, And to provide a helical file and a construction method thereof.

According to another aspect of the present invention, there is provided a helical file in which a grouting material is injected into a plurality of grouting holes radially formed on an expanding blade to penetrate the pile portion of the ground, thereby preventing corrosion of the pile portion, .

As a means for achieving the above technical object, a helical file produced by the expansion plate according to an embodiment of the present invention includes a front end file, a first shaft file connected to the front end file and integrally rotatable with the front end file, A file portion including a second shaft file rotatable in one piece; A spiral rotating blade unit disposed on the outer circumferential surface of the distal end portion so as to be spaced apart from each other; A coupler for connecting the front end file and the first shaft file, the first shaft file and the second shaft file; And an extension part having a larger radius of rotation than the coupler and arranged to surround the coupler. When the file part is rotationally penetrated by the ground, the extension part rotates to form a sandwiching space between the front end part file and the ground Lt; / RTI &
Wherein the extension comprises: a ring-shaped extension plate formed to have a diameter greater than twice the diameter of the tip end file, the first shaft file, and the second shaft file, the center of the disk being penetrated; And an expanding blade formed downward from both ends of the expanding plate and positioned on an outer circumferential surface of the coupler, wherein grouting holes formed in the expanding plate to extend through the expanding plate are radially arranged from the center of the expanding plate, The grout material injected along the outer circumferential surface is passed through the grouting hole and grouted into a gravel space formed by rotational penetration of the pile portion. The grout material is directly injected from the ground into the gravel space to enlarge the diameter of the helical file,
A plurality of through holes are formed in the outer circumferential surface of the coupler so as to allow the bolt to pass therethrough, and the bolt penetrates the expanding vane while fixing the expanding portion to the coupler as the nut is fastened to the nut, A first expanding blade formed on the base plate; And a second extension vane formed on the other side of the outer circumferential surface of the coupler facing the first extension vane, wherein the first and second extension vanes have a shape that becomes narrower toward the lower side .

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Meanwhile, a method of constructing a helical file in which an expansion plate according to the present invention is fabricated includes the steps of: (a) a hollow tube-like end portion file is mounted on a file driver and rotationally penetrated into a ground; (b) welding the coupler so as to surround the upper end of the front end pile and the lower end of the first shaft pile, and then attaching the extension plate with the extension wing to the coupler, Rotating and penetrating the ground and simultaneously performing grouting; And (c) welding another coupler so as to surround the upper end of the first shaft file and the lower end of the second shaft file, and attaching an extension plate having an extension wing to the other coupler, 2. The method of claim 1, further comprising the step of rotating and penetrating the two shaft files on the ground and performing grouting, wherein the expanding portion is formed to have a diameter greater than twice the diameter of the front end portion file, the first shaft portion file, A ring-shaped extension plate in which a central portion of the disk is passed through; And an expanding blade formed downward from both ends of the expanding plate and positioned on an outer circumferential surface of the coupler, wherein grouting holes formed in the expanding plate to extend through the expanding plate are radially arranged from the center of the expanding plate, The grout material injected along the outer circumferential surface is passed through the grouting hole and grouted into a gravel space formed by rotational penetration of the pile portion. The grout material is directly injected from the ground into the gravel space to enlarge the diameter of the helical file, The bolt is fixed to the coupler by being fastened to the nut while the bolt penetrates the extension wing, and the extension wing is formed on one side of the outer circumferential surface of the coupler, A first extension wing; And a second extension vane formed on the other side of the outer circumferential surface of the coupler facing the first extension vane, wherein the first and second extension vanes have a shape that becomes narrower toward the lower side.

The step (a) comprises the steps of: (a1) inserting the distal end portion of the distal end portion of the distal end portion of the distal end portion pile Rotating the soil on the ground; And (a2) after the rotation of the leading end file is stopped, the leading end file is removed from the file driver.

The step (b) includes the steps of: (b1) positioning a first shaft file mounted on the file driver in a state that the first shaft file is positioned on the same axis as the front end file; (b2) welding the coupler to surround the upper end of the distal end file and the lower end of the first shaft file to secure the distal end file and the first shaft file; (b3) passing the extension wing and the coupler through a bolt, and then fastening the extension wing and the first shaft file with a nut to integrate the front end file and the first shaft file; And (b4) injecting the grooved material into the grooved hole radially penetrating the extension plate while rotating the integrated end-piece file and the first shaft file into the ground.

The step (c) includes the steps of: (c1) positioning a second shaft file mounted on the file driver while being positioned on the same axis as the first shaft file; (c2) fixing the first shaft file and the second shaft file by welding the other coupler to surround the upper end of the first shaft file and the lower end of the second shaft file; (c3) integrating the first shaft file and the second shaft file by threading the bolt through the extension wing and the other coupler, and then tightening the nut with the nut; And (c4) rotating the integrated first shaft file and the second shaft file in the ground, and injecting the grouting material into the grouting hole formed radially through the expansion plate.

(D) cutting a portion of the second shaft file protruded above the ground surface, and then placing the foundation concrete over the ground, which is the periphery of the second shaft file, .

The step (d) includes the steps of: (d1) cutting a portion of the second shaft file protruding from the ground; (d2) attaching a support plate to the end of the cut second shaft file; And (d3) placing the foundation concrete on an upper portion of the support plate so that the second shaft file and the support plate are buried.

According to the present invention, by directly welding the front end file, the first shaft file, the first shaft file, and the second shaft file with the coupler, the expansion plate and the extension vane are additionally mounted and fixed to the coupler, It is possible to enlarge it to a greater extent, thus enabling smooth construction.

According to the present invention, it is possible to make deeper construction than the prior art through the expansion plate formed on both sides of the expansion plate and the expansion plate, the diameter of which is two times or more larger than the diameter of the front end file, the first shaft file and the second shaft file.

According to the present invention, grouting material is injected into a plurality of grouting holes radially formed in an expanding vane when the pile portion is rotationally penetrated into the ground, thereby preventing corrosion of the pile portion.

1 is a sectional view showing a construction of a helical pile according to a conventional technique.
2 is a view showing a helical file in which an extension plate according to an embodiment of the present invention is manufactured.
3A is a detailed view of the S region of FIG. 2 according to the first embodiment.
FIG. 3B is a detailed view of the S region of FIG. 2 according to the second embodiment.
3C is a detailed view of the S region of FIG. 2 according to the third embodiment.
FIG. 4 is a diagram illustrating that a leading end file according to an embodiment of the present invention is rotationally penetrated to a ground by a file driver.
5 is a view showing that the front end file and the first shaft file according to the embodiment of the present invention are rotationally penetrated to the ground by the pile driver in a state where they are integrated with the coupler.
FIG. 6 is a diagram illustrating that a file attaching file driver including a front end file, a first and a second shaft file according to an embodiment of the present invention is rotationally penetrated to the ground.
FIG. 7A is a view showing that a paddle is mounted on one end of a second shaft file in a state where a file portion including first and second shaft files is rotationally inserted in a ground according to an embodiment of the present invention.
FIG. 7B is a view showing the foundation concrete poured into the upper part of the pressure plate according to the embodiment of the present invention.
FIG. 7C is a view showing an upper part of a concrete placed on the same axis line of the pressure plate according to the embodiment of the present invention is fixed by another pressure plate.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Hereinafter, a helical file in which an extension plate according to an embodiment of the present invention is manufactured will be described with reference to FIGS. 2, 3A to 3C, and a construction method of a helical file in which an extension plate is manufactured will be described with reference to FIGS. .

[Helical file (100)]

FIG. 2 is a view showing a helical file in which an extension plate according to an embodiment of the present invention is manufactured. FIG. 3 (a) is a detailed view of the S region of FIG. 2 according to the first embodiment, FIG. 3C is a detailed view of the S region of FIG. 2 according to the third embodiment.

2, 3A, and 3B, a helical file 100 in which an extension plate according to an embodiment of the present invention is manufactured includes a file unit 110, a rotary wing unit 120, a coupler 130, A fastening portion 140, a fastening portion 150, and a pressure plate 160.

The file unit 110 may include a front end file 111, a first shaft file 112, and a second shaft file 113. [

The tip end file 111 has a hollow tube shape such as a general pipe. The leading end file 111 in the present invention is widely used in civil engineering and construction fields. One end of the leading end file 111 is formed in a conical shape as shown in FIG. 2, so that the ground G can be smoothly extracted. The other end of the leading end portion file 111 is attached to the file driver 105 mounted on the excavator so that the leading end portion file 111 penetrates the ground G by rotating during operation of the file driver 105.

The first shaft file 112 is a hollow shaft member which is integrally coupled with the leading end portion file 111 when the leading end portion file 111 is rotationally inserted into the ground G and then the leading end portion file 111 and the file driver 105 are detached. And the outer diameter and inner diameter of the first shaft file 112 are formed to be equal to the outer diameter and inner diameter of the front end portion pile 111. [

The upper end of the first shaft file 112 is attached to the file driver 105 and is rotatable. The first shaft file 112 is connected to the coupler 130 in a state where the first shaft file 112 is positioned on the same axis as the leading end file 111, As shown in Fig.

The size and shape of the second shaft file 113 are the same as those of the first shaft file 112. The second shaft file 113 is a hollow tube to be used when additional excavation work is required.

The upper end of the second shaft file 113 is mounted and rotatable with the file driver 105 after the first shaft file 112 is removed from the file driver 105, May be integrated with the upper end of the first shaft file 112 by another coupler 130.

The rotary vane 120 may include a first rotary vane 121, a second rotary vane 122, and a third rotary vane 123.

The first rotary blade 121 may be formed in a spiral shape, that is, a helical shape, on the outer peripheral surface of the lower end of the distal end portion 111. At this time, the angle of inclination between the front end portion pile 111 and the first rotation pawl 121 can be made as small as in the present invention. However, when the ground G is rigid, 121 may be formed to have a large inclined angle.

The second rotary blade 122 may be formed in a spiral shape on the outer peripheral surface of the front end pile 111, which is an upper portion spaced apart from the first rotary blade 121 by a predetermined distance. The size of the second rotary blade 122 And the shape are the same as those of the first rotary blade 121, it goes without saying that it can be appropriately changed and applied as necessary.

The third rotary blade 123 may be formed in a spiral shape on the outer peripheral surface of the front end pile 111, which is an upper portion spaced apart from the second rotary blade 122 by a predetermined distance. The size of the third rotary blade 123 And the shape are the same as those of the first and second rotary blades 121 and 122, it goes without saying that it can be appropriately changed and applied as necessary.

The coupler 130 may be applied in various forms as shown in FIGS. 3A, 3B and 3C.

First, the coupler 130 according to the first embodiment may be a pin type as shown in FIG. 3A. Specifically, the inner diameter of the coupler 130 is formed to be larger than the inner diameter of the front end portion file 111 and the first shaft portion 112. The upper portion of the front end pile 111 and the lower portion of the first shaft pile 112 are inserted into both ends of the coupler 130 by direct welding.

A plurality of through holes are formed in the outer circumferential surface of the coupler 130 so that the bolt 151 can penetrate through the coupler 130. The bolt 151 is fastened to the nut 152 while penetrating the expanding blade 142 Thereby fixing the extension 140.

3B, a thread is formed on the outer circumferential surface of the coupler 130 so that the extended vane 142 is coupled to the coupler 130, At this time, a thread corresponding to the thread of the coupler 130 may be formed on the inner circumferential surface of the extended blade 142. Unlike the coupler 130 according to the first embodiment, the coupler 130 according to the second embodiment can be fastened without using the bolts 151 and the nuts 152.

On the other hand, the coupler 130 according to the third embodiment may have a hexagonal thread type as shown in FIG. 3C, and an enlarged blade 142 is mounted on the outer circumferential surface of the coupler 130.

The coupler 130 described above is integrally joined by direct welding when the front end file 111 and the first shaft file 112 and the first shaft file 112 and the second shaft file 113 are combined .

The extension 140 is disposed to surround the coupler 130 and has a larger radius of rotation than the coupler 130. When the file 110 is rotationally inserted into the ground, 111) and the ground. The extension 140 may include an extension plate 141 and an extension blade 142.

3A to 3C, a grooved hole 141a passing through the expansion plate 141 is radially disposed from the center of the expansion plate 141. The grooved hole 141a is formed in the shape of a ring, . Although the number of the grouting holes 141a is six in the present invention, the number of the grouting holes 141a can be appropriately changed as needed.

The extension wing 142 is formed downward from both ends of the extension plate 141 and is located on the outer peripheral surface of the coupler 130 and may include a first extension wing 142a and a second extension wing 142b.

The first extension wing 142a is located on one side of the outer peripheral surface of the front end portion file 111 and the width of the first extension wing 142a is narrowed to the lower portion of the front end portion file 111, Thereby effectively securing the surrounding space of the leading end portion file 111. [

The second expanding vane 142b has the same shape as that of the first expanding vane 142a and is preferably located on the other side of the outer circumferential face of the tip end file 111 which is opposed to the first expanding vane 142a.

Although the first and second extension vanes 142a and 142b are shown as a pair in the present invention, they can be appropriately changed according to the purpose or intention of the user.

The fastening part 150 may include a bolt 151 and a nut 152 and is used only when the coupler 130 according to the first embodiment of the present invention is applied.

The bolt 151 is a commonly used fastening tool. In the present invention, the bolt 151 is used to couple the coupler 130 and the extension blade 142 according to the first embodiment. The bolts 151 are fastened to the nuts 152 to fix the couplers 130 and the extension vanes 142. In the present invention, at least three or more bolts 151 may be applied as shown in FIG.

As shown in FIG. 2, the pliers 160 are completely rotated by the pile 110 including the leading end file 111 and the first and second shaft files 112 and 113 into the ground G, 2 shaft 113 is cut.

When the first shaft file 112 or the second shaft file 113 is connected by the bolt 151 after the rotation of the front end portion file 111 with the rotary wing portion 120 attached thereto, The expansion plate 141 with the wings 142 is fixed to the first shaft file 112 or the portion of the second shaft file 113 adjacent to the coupler 130 with the bolts 151 to rotate the file unit 110 At the same time, the first shaft file 112 or the second shaft file 113 is rotationally penetrated into the ground G and grouting is performed.

More specifically, when the earth and sand portion, which has a diameter of D216, is formed by being pushed by the expansion plate 141 and the expanding blade 142 laterally by the rotary blade 120 of the front end portion file 111, The grout is injected directly into the soil space formed in the installed grouting equipment.

Thereafter, the first and second shaft files 112 and 113 are continuously fixed to the side of the coupler 130 with the bolts 151 by the same method, and then the cushioning plate 160 is installed, At this time, the finishing of the pressure plate 160 is divided into a new construction and an extension construction.

[Construction method of helical file with extension plate]

FIG. 4 is a view showing that a front end file according to an embodiment of the present invention is rotationally penetrated to a ground by a file driver, FIG. 5 is a view showing a state in which the front end file and the first shaft file according to the embodiment of the present invention are integrated with a coupler FIG. 6 is a view showing that the file is inserted in the ground by the file driver in the file by the file driver. FIG. 6 shows that the file is inserted in the ground by the file attachment file driver including the front end file and the first and second shaft files according to the embodiment of the present invention FIG. 7A is a view showing that a paddle is mounted on one end of a second shaft file in a state where a file portion including a front end file, first and second shaft files according to an embodiment of the present invention is rotationally penetrated into the ground, FIG. 7B is a view showing a foundation concrete poured into an upper part of a pressure plate according to an embodiment of the present invention, and FIG. A diagram illustrating that were fixed to the upper portion of the concrete, located in the coaxial line of the jiappan Another jiappan.

A method of constructing a helical file according to an embodiment of the present invention includes the steps of (a) a step (b) in which a hollow tube-type leading end file 111 is mounted on a file driver 105 and rotationally penetrated into a ground G, After the coupler 130 is welded so as to surround the upper end of the front end portion file 111 and the lower end of the first shaft portion 112 and the extension plate 141 having the extension wing 142 attached thereto is mounted on the coupler 130 A step of rotating the first shaft file 112 mounted on the file driver 105 into the ground G and simultaneously grouting the first shaft file 112 and (c) The second coupler 130 is welded to surround the lower end of the first shaft 112 and the extension shaft 141 attached to the other coupler 130 is mounted. The step of rotating the file 113 in the ground G and simultaneously performing the grouting It can hamhal.

The tip end file 111 having the first, second and third rotating blades 121, 122 and 123 is rotationally inserted into the ground G and the step (a) .

4, the first rotating blade 121, the second rotating blade 122, and the second rotating blade 122 are sequentially formed so as to be spaced apart from each other on the lower outer circumferential surface of the front end pile 111, A step in which the leading end file 111 mounted on the file driver 105 is rotationally penetrated to the ground G by the third rotating blade 123; And (a2) removing the distal end portion file 111 from the file driver 105 after the rotation of the distal end portion file 111 is stopped.

Next, the step of penetrating the first shaft file 112 provided with the extension plate 141 is performed. In this step, the extension plate 141 with the extension wing 142 is fixed to the first shaft file 112, When the first shaft file 112 is rotationally inserted, a gravel-like space having a diameter of D216 is formed by the expansion plate, and corresponds to the step (b).

5, the first shaft file 112 mounted on the file driver 105 is positioned on the same axis as the front end file 111, (B2) welding the coupler (130) so as to surround the upper end of the leading end file (111) and the lower end of the first shaft file (112) to fix the leading end file (111) and the first shaft file (b3) passing the extension blade 142 and the coupler 130 through the bolt 151 and then fastening the same with the nut 152 to integrate the front end pile 111 and the first shaft pile 112, and (b4 And injecting the grouting material into the grouting hole 141a formed radially through the expansion plate 141 while rotating the first and second shaft files 111 and 112 in the ground, . At this time, the grouting material means those shown around the front end file 111 and the first shaft file 112.

Concretely, the first shaft file 112 is rotationally penetrated into the ground G and simultaneously the grouting is poured directly into the sandwiching space to form the front end portion file 111 reinforced by the cement grouting with a diameter of D216, Is prevented from being corroded and reinforced with respect to the direct compression force of the front end portion pile 111. [

6, the second shaft file 113 mounted on the file driver 105 is positioned on the same axis as the first shaft file 112, as shown in FIG. 6 (c1) (C2) welding another coupler 130 to surround the upper end of the first shaft file 112 and the lower end of the second shaft file 113 to form a first shaft file 112 and a second shaft file (C3) The bolts 151 penetrate the extension wing 142 and the other coupler 130 and then are fastened with the nuts 152 to secure the first shaft file 112 and the second shaft file 113 (C4) integrally rotating the first shaft file 112 and the second shaft file 113 into the ground G and simultaneously forming a grouting hole 141a formed radially through the expansion plate 141 ) Of the grouting material.

The steps (b4) and (c4) described above are performed to connect the first and second shaft files 112 and 113 provided with the expansion plate 141, and then rotationally penetrate the first and second shaft files 112 and 113. 112 and 113 are rotated.

When the construction using the file unit 110 is completed, the pressure plate 160 is installed, and the corresponding step is step (d).

That is, a method of constructing a helical file according to an embodiment of the present invention includes the steps of (e) cutting a portion of a second shaft file 113 protruded on a paper surface G, G) onto the foundation concrete (C).

Specifically, step (d) includes cutting a part of the second shaft file 113 protruded on the ground G shown in FIG. 7A (d1) (step d2) The second shaft file 113 and the pressure plate 160 (see FIG. 7 (c)) by installing the foundation concrete C on the upper part of the pressure plate 160, And a step of burying the insulating film.

In other words, after the cushion plate 160 is installed on the upper end of the second shaft file 113, reinforcing rods or the like are laid out so that the foundation concrete is laid on the base concrete, and expansion work can be carried out if necessary.

At this time, in the enlargement site, a core is drilled on an existing foundation, a helical file is installed, and a supporting tube is installed to install a lower fixing device, which is shown in detail in FIG.

The present invention is characterized in that the leading end portion of the leading end portion of the leading end portion of the leading end portion of the leading end portion of the leading end portion of the leading end portion of the leading end portion of the leading end portion of the leading end portion, When the first and second shaft files 112 and 113 are connected to each other by the coupler, the bolts 151 and the second bolts 151, ), It is possible to increase the usability of the helical file 100.

In addition, as the gravels are pushed laterally by the expansion blade 142 and the extension plate 141, grouting is performed with the grouting holes 141a having a diameter of D216 formed in the expansion plate 141, It is possible to solve the problem that the construction of the deep file due to the small diameter (generally used in D88.9) is difficult.

Also, the helical file 100 can be prevented from being corroded by an outer grout material formed by filling the helical file 100 with a grouting material, such as a micro file.

In addition, in order to install a coupler in a shaft file, which has been pointed out as the greatest problem in the related art, a coupler is manufactured with a pipe diameter slightly larger than that of a shaft. As a result of the gap between the coupler portion and the shaft file, However, in the present invention, the bent portion can be firmly fixed by the extension plate 142 having the extension blade 142 attached between the front end portion file 111 and the first shaft portion.

In addition, in the grouting, the grout material of the grouting hole 141a penetrates into the soil material portion and is cemented together, so that frictional force is generated later, and a higher supporting force can be exerted.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Groove simultaneous construction helical file with extension plate installed
105: File driver
110: File section
111: tip file
112: First shaft file
113: 2nd shaft file
120:
121: first rotating blade
122: second rotary blade
123: 3rd rotary blade
130: Coupler
140: Extension part
141: Extension
141a: Grouting Hall
142: Extended wing
142a: first extension wing
142b: second extension wing
150:
151: Bolt
152: Nuts
160:

Claims (9)

A file portion including a front end file, a first shaft file connected to the front end file and integrally rotatable with the front end file, and a second shaft file connected to the first shaft file and integrally rotatable;
A spiral rotating blade unit disposed on the outer circumferential surface of the distal end portion so as to be spaced apart from each other;
A coupler for connecting the front end file and the first shaft file, the first shaft file and the second shaft file; And
And an extension part having a larger turning radius than the coupler and arranged to surround the coupler,
Wherein when the file portion is rotationally penetrated into the ground, the extension portion rotates to form a gravel space between the front end portion file and the ground,
The extension portion includes: a ring-shaped extension plate 141 having a central portion of the circular plate penetrated; And an expanding blade (142) formed downwardly from both ends of the expanding plate and positioned on an outer circumferential surface of the coupler, wherein a grouting hole (141a) formed through the expanding plate is radially arranged from the center of the expanding plate The grout material injected along the outer circumferential surface of the front end pile passes through the grouting hole 141a and is grouted into a slurry formed by the rotation of the pile portion,
The grout material is directly injected from the ground into the earth-moving space to enlarge the diameter of the helical file,
A plurality of through holes are formed in the outer circumferential surface of the coupler 130 such that the bolts 151 can penetrate through the coupler 130. The bolts 151 extend through the extending blades 142 and are fastened with the nuts 152, (140) to be fixed to the coupler (130), wherein the extension wing (160) includes: a first extension wing (162) formed at one side of the outer circumferential surface of the coupler; And a second extension vane formed on the other side of the outer circumferential surface of the coupler facing the first extension vane, wherein the first and second extension vanes have a shape that becomes narrower toward the lower side, Helical file produced. delete delete (a) a hollow tube-like tip file is mounted on a file driver and rotationally penetrated into the ground;
(b) welding the coupler so as to surround the upper end of the front end pile and the lower end of the first shaft pile, and then attaching the extension plate with the extension wing to the coupler, Rotating and penetrating the ground and simultaneously performing grouting; And
(c) welding another coupler so as to surround the upper end of the first shaft file and the lower end of the second shaft file, and attaching an extension plate having an extension wing to the other coupler, And rotating the shafts on the ground to perform grouting,
The extension plate having the extension wings of the steps (b) and (c) includes a ring-shaped extension plate 141 having a central portion of the circular plate penetrated; And an expanding blade 142 formed downward from both ends of the expanding plate and positioned on an outer circumferential surface of the coupler, and a grouting hole 141a extending through the expanding plate is radially disposed from the center of the expanding plate, The grouting is performed such that the grout material injected along the outer circumferential surface of the front end pile is passed through the grouting hole 141a to be grouted into the slurry space formed by the rotational penetration of the pile portion, and the grout material is directly injected into the slurry Thereby increasing the diameter of the helical file,
A plurality of through holes are formed in the outer circumferential surface of the coupler 130 such that the bolts 151 can penetrate through the coupler 130. The bolts 151 extend through the extending blades 142 and are fastened with the nuts 152, (140) to be fixed to the coupler (130), wherein the extension vane comprises: a first extension vane formed on one side of the outer circumferential surface of the coupler; And a second extension vane formed on the other side of the outer circumferential surface of the coupler facing the first extension vane, wherein the first and second extension vanes have a shape that becomes narrower toward the lower side, Construction method of helical file installed simultaneously with grouting. 5. The method of claim 4,
The step (a)
(a1) a step of rotating the leading end file mounted on the pile driver by a first rotating blade, a second rotating blade, and a third rotating blade sequentially formed on the lower outer circumferential surface of the front end pile; And
and (a2) removing the distal end portion of the file from the pile driver after stopping rotation of the distal end portion of the file. 6. The method of claim 5,
The step (b)
(b1) positioning a first shaft file mounted on the file driver in a state that the first shaft file is positioned on the same axis as the front end file;
(b2) welding the coupler to surround the upper end of the distal end file and the lower end of the first shaft file to secure the distal end file and the first shaft file;
(b3) passing the expanding vane and the coupler through a bolt and then fastening the same with a nut to integrate the front end file and the first shaft file; And
(b4) injecting the grouting material into the grooved material through the grooved hole radially penetrating the expansion plate while rotating the integrated end-piece file and the first shaft file into the ground, and injecting the grouting material with the grooved material Construction Method of Helical Files. The method according to claim 6,
The step (c)
(c1) positioning a second shaft file mounted on the file driver while being positioned on the same axis as the first shaft file;
(c2) fixing the first shaft file and the second shaft file by welding the other coupler to surround the upper end of the first shaft file and the lower end of the second shaft file;
(c3) integrating the first shaft file and the second shaft file by threading the bolt through the extension wing and the other coupler, and then tightening the nut with the nut; And
(c4) rotating the integrated first shaft file and the second shaft file in the ground, and injecting the grouting material into the grouting hole formed radially through the expansion plate. Construction method of grooved helical file simultaneously. 8. The method of claim 7,
The helical file construction method includes:
(d) cutting a portion of the second shaft file protruded above the ground, and then placing the foundation concrete over the ground, which is the periphery of the second shaft file. A method of constructing a helical file. 9. The method of claim 8,
The step (d)
(d1) cutting a portion of the second shaft file protruding above the ground;
(d2) attaching a support plate to the end of the cut second shaft file; And
(d3) placing the foundation concrete on the upper part of the support plate so that the second shaft file and the support plate are buried; and (d3) installing the extension plate on the support plate.
KR1020160007202A 2016-01-20 2016-01-20 Helical pile and construction method thereof KR101675884B1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101759879B1 (en) * 2017-01-19 2017-07-20 쏘일락이엔지(주) Rotational penetration pile unit, rotational penetration pile and construction method thereof
KR101852826B1 (en) * 2017-07-13 2018-04-27 김용모 Helical pile of edge extension type
KR101864544B1 (en) 2017-08-09 2018-06-05 썬엔지니어링 (주) Distribution plate unit for connecting rebar and distribution structure of micropile and smallcaliber pile using of the same
CN108149676A (en) * 2017-12-28 2018-06-12 浙江大学 Band expands shoe stake side two-step-filling construction of prefabricated piles structure and its construction method
KR20180112642A (en) * 2017-04-03 2018-10-12 와이투건설(주) Helical Pile
KR101939020B1 (en) 2018-04-16 2019-01-16 썬엔지니어링 (주) Footing bar jointed pressure supporting unit and foundation construction method of caliber penetrator using the same
CN113756278A (en) * 2021-09-18 2021-12-07 北京城建亚泰建设集团有限公司 Construction method of prestressed pipe pile

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JP2003247231A (en) * 2002-02-25 2003-09-05 Kokuei Co Ltd Steel pipe pile
KR101454598B1 (en) * 2014-01-10 2014-11-04 황규원 Helix pile head construction method with grouting-processing

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JP2003247231A (en) * 2002-02-25 2003-09-05 Kokuei Co Ltd Steel pipe pile
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101759879B1 (en) * 2017-01-19 2017-07-20 쏘일락이엔지(주) Rotational penetration pile unit, rotational penetration pile and construction method thereof
KR20180112642A (en) * 2017-04-03 2018-10-12 와이투건설(주) Helical Pile
KR101952704B1 (en) * 2017-04-03 2019-02-27 와이투건설(주) Helical Pile
KR101852826B1 (en) * 2017-07-13 2018-04-27 김용모 Helical pile of edge extension type
KR101864544B1 (en) 2017-08-09 2018-06-05 썬엔지니어링 (주) Distribution plate unit for connecting rebar and distribution structure of micropile and smallcaliber pile using of the same
CN108149676A (en) * 2017-12-28 2018-06-12 浙江大学 Band expands shoe stake side two-step-filling construction of prefabricated piles structure and its construction method
KR101939020B1 (en) 2018-04-16 2019-01-16 썬엔지니어링 (주) Footing bar jointed pressure supporting unit and foundation construction method of caliber penetrator using the same
CN113756278A (en) * 2021-09-18 2021-12-07 北京城建亚泰建设集团有限公司 Construction method of prestressed pipe pile
CN113756278B (en) * 2021-09-18 2022-07-26 北京城建亚泰建设集团有限公司 Construction method of prestressed pipe pile

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