KR101552139B1 - Helical anchor pile - Google Patents

Abstract

The present invention relates to a helical anchor pile. The present invention is capable of firmly joining connection heads to the anchor piles by screw-coupling a helical anchor pile body, a first connection head joined to the same, a first shaft pile anchor, second connection head joined to the same, a second shaft anchor pile, a third connection head joined to the same using a male and a female screw unit and welding the first connection head to the helical anchor pile body, the second connection head to the first shaft anchor pile, and the third connection head to the second shaft anchor pile respectively; thereby smoothly constructing the helical anchor pile by preventing a separation of the connection heads from the anchor piles even when a storing torque is applied. The present invention is capable of minimizing a resistance of a cut ground by interpenetrating the helical anchor pile after forming cut portions on an outer circumference of helixes equipped in the helical anchor pile; improving the ground cutting performance by including a cutting blade on the cut portions; effectively excavating and cutting by excavating the ground with an excavation crown before cutting the ground with the helixes by joining the excavation crown made of a material with excellent cutting force and including a cutting tip on the outer circumference of the lower part of the helical anchor pile and a cutting tip on the lower end of the helical anchor pile. Accordingly, the present invention is capable of constructing the helical anchor pile even the helical anchor pile can be constructed through a bedrock, rapidly constructing the helical anchor pile by reducing a burden to the helixes for cutting, and economically constructing the helical anchor pile by constructing the helical anchor pile even with a small hydraulic rotary device.

Description

Helical anchor pile {Helical anchor pile}

The present invention relates to helical anchor piles, and more particularly, to a helical anchor pile which is capable of being installed even when it is required to pass through a rock during construction, and a connection portion between a helical anchor pile and a shaft pile and a shaft pile are firmly connected, The present invention relates to a helical anchor pile which can be installed safely even when a large torque is applied and can be installed even with a small hydraulic rotary device so that economical construction is possible.

In general, piles are introduced into the ground in the construction of the foundation supporting the load of a building or a civil structure. For example, a hitting method in which a file is hit and an entry method in which a file is pressed are used.

However, as the striking method and the press-in method are pointed out as safety problems and environmental problems due to noise and vibration at the time of construction, rotational indentation methods have been developed and used.

In the rotary indentation method, a helical anchor pile is used. The helical anchor file includes a helical anchor file body in the form of a pipe and a plurality of helixes formed on the outer circumferential surface of the helical anchor file body.

In addition, the helical anchor file is coupled to a hydraulic rotary device installed at the end of a boom of a backhoe, without using large equipment such as an auger drill machine.

Therefore, since the height of the equipment for rotating the helical anchor file can not be increased indefinitely, the length of the helical anchor file is set to about 3 m. If the required penetration depth is deeper than the helical anchor file length, One or more shaft anchor piles may be connected and intruded.

Typical helical anchor file construction methods include the steps of penetrating the helical anchor file, connecting and penetrating the shaft file (simple pipe-type file without helix), grouting, head cleaning, and docking test And it is possible to shorten the air to 250m / day by the integrated construction of the pile, and the construction quality is excellent, the non-clay soil, the noiseless, The non-vibration method has advantages such as improvement of construction safety and environment, complaints at construction sites and dispute resolution, as well as minimizing ground disturbance at the time of construction of soft ground, and also it is possible to construct at slope angle.

However, the conventional helical anchor pile construction method has various problems.

First, the tip of helical anchor pile of helical anchor pile is sloped or the conical head with bottom pile is combined to facilitate digging into the ground. However, if the pile should pass through the rock during construction, So that the construction can not be performed.

Second, Helical anchor file The main body of the helical anchor file and the shaft file are connected to the top of the helical anchor file and the bottom of the shaft file to connect the helical anchor file and the shaft file, using the same diameter pipe. Insert the connecting sleeve into the upper end of the lower shaft file and the lower end of the upper shaft file in order to connect the shaft file and the shaft file to the connecting sleeve and the helical anchor file body and the connecting pin passing through the shaft file. If the connection sleeve and the connecting pin penetrating the shaft files of the upper and lower parts are inserted, when the torque is applied at the time of construction due to the weak connection part, the connection part between the helical anchor file and the shaft file is damaged and the construction is delayed There is a problem.

Therefore, the construction can be carried out even when the rock is to be passed through the construction, and the connection portion between the helical anchor pile and the shaft pile and the shaft pile are firmly connected, so that even when a large torque is applied during construction, It is necessary to develop a technology that enables construction with economical construction since it is possible to construct even a small hydraulic rotary device.

Korean Registered Patent No. 10-1425879 (Registered on July 28, 2014) "Helical file with buckling prevention structure and its construction method" Korean Registered Patent No. 10-1447080 (Registered on Sep. 26, 2014) "Helical file with anti-twist and anti-buckling structure and its construction method"

Accordingly, it is an object of the present invention to provide a method of constructing a helical anchor pile and a shaft pile, which can be applied even when a rock is to be passed through during construction, And a helical anchor pile which can be installed with a small hydraulic rotary device and can be installed economically.

According to an aspect of the present invention, there is provided a helix anchor file including a helix anchor file body and a plurality of helixes coupled to an outer circumferential surface of the helix anchor file body. A first shaft anchor file located at an upper portion of the helical anchor pile and having a lower end connected to an upper end of the helical anchor pile body; And a second shaft anchor file located on the upper side of the first shaft anchor file and having a lower end connected to an upper end of the first shaft anchor file; A first connection head coupled to an upper end of the helical anchor pile; A second connecting head coupled to an upper end of the first shaft anchor pile; And a third connecting head coupled to an upper end of the second shaft anchor pile, wherein the helix has a plurality of cutouts formed at the outer periphery thereof and a cutting edge formed at one side of the cutout, A positioning and welding ring in which the lower end of the first connecting head is welded and fixed to the lower portion of the upper male thread portion of the knife anchor file to weld the lower end of the first connecting head, Welded to the lower part of the second shaft anchor pile to determine the lower end position of the second connecting head and to weld the lower end of the second connecting head, 3 positioning and welding ring for determining the lower end position of the connecting head and welding the lower end of the third connecting head, A positioning and welding ring which is fixed and determines an upper end position of the first connection head and to which the upper end of the first connection head is welded and a second welding head which is welded and fixed to the upper portion of the lower end thread portion of the second shaft anchor pile, Further comprising a drill crown coupled to the lower end of the helical anchor pile of the helical anchor pile, the positioning and welding ring for determining an upper position and welding an upper end of the second connection head, The common crown includes a crown main body coupled to the lower end of the helical anchor pile main body, a plurality of outer peripheral side cutting tips protruding from the outer peripheral surface of the crown main body, and a plurality of lower side cutting tips projecting from the lower end surface of the crown main body And provides a helical anchor file which is composed of

According to the helical anchor file of the present invention, the helical anchor pile main body and the first connection head connected thereto, the first shaft anchor file, the second connection head and the second shaft anchor file coupled thereto, The head is screwed to the helical anchor pile main body, the second connecting head to the first shaft anchor pile, and the third connecting head to the second shaft anchor pile The welding can be more firmly coupled by welding, so that even when a large torque is applied, the connection heads are not separated from the anchor pile, and the construction of the helical anchor pile can be smoothly proceeded.

In addition, according to the Helical anchor file of the present invention, the cut-out portion is formed in the outer periphery of a plurality of helixes provided in the helical anchor file to minimize the resistance of the cut soil when penetrating the ground, The cutting performance of the ground is improved and a perforating crown having an outer circumferential cutting tip made of a material having superior cutting power and a lower cutting tip at the bottom of the helical anchor pile is combined with the crown, By perforating the ground, it is possible to drill and cut the ground very effectively, which makes it possible to construct even when it has to pass through the rock during construction, and it is possible to reduce the burden on the cutting of the helix, The construction of the pile is made, and the construction can be carried out even with a small hydraulic rotary machine, It is.

1 to 4 show a first preferred embodiment of a helical anchor pile according to the present invention,
1 is an exploded perspective view of a helical anchor file and a shaft file,
2 is a perspective view showing a connection state between a helical anchor file and a shaft file,
3 is an enlarged longitudinal sectional view showing a connecting portion between the helical anchor file and the shaft file,
4 is an enlarged longitudinal sectional view showing a connecting portion of the shaft anchor pile,
5 is a perspective view of a helical anchor pile showing a second preferred embodiment of a helical anchor pile according to the present invention,
6 and 7 show a third preferred embodiment of a helical anchor file according to the present invention,
6 is an enlarged vertical sectional view showing a connecting portion between the helical anchor file and the shaft file,
7 is an enlarged vertical sectional view showing a connecting portion of the shaft anchor pile,
8 to 10 show a fourth preferred embodiment of a helical anchor file according to the present invention,
FIG. 8 is a perspective view of a coupled state of the perforated crown coupled to the lower end of the helical anchor pile,
9 is a perspective view of the helical anchor pawl body and the crown crowns as viewed from above,
And,
FIG. 10 is an exploded perspective view of the helical anchor pawl body and the crater crowns as viewed from the bottom thereof.

Hereinafter, a helical anchor file according to the present invention will be described in detail in accordance with a preferred embodiment illustrated in the accompanying drawings.

1 to 4 show a first preferred embodiment of a helical anchor file according to the present invention.

The helical anchor file according to the present embodiment includes a helical anchor file main body 11 and a helical anchor main body 11 including a plurality of helixes 12, An anchor file 10; A first shaft anchor pile 20 located at an upper portion of the helical anchor pile 10 and having a lower end connected to an upper end of the helical anchor pile body 11; And a second shaft anchor pile 30 located at the upper portion of the first shaft anchor pile 20 and connected to the upper end of the first shaft anchor pile 20 at the lower end.

The number of shaft anchor files is substantially determined by the total anchor file depth. However, in the illustrated example, only the first shaft anchor file 20 and the second shaft anchor file 30 are shown for convenience.

The helical anchor pile main body 11, the first shaft anchor pile 20 and the second shaft anchor pile 30 are formed in a pipe shape.

The outer diameters of the helixes 12 located at the lower end are the smallest and the outer diameters of the helixes 14 located at the top are the largest. The outer diameter of the helix 12 and the outer diameter of the helix 14 are preferably equal.

A first connection head 40 for connecting the upper end of the helical anchor pile 10 to a hydraulic rotary device (not shown) mounted on the backhoe is provided at the upper end of the helical anchor pile body 11, A second connecting head 50 is provided at an upper end of the one shaft anchor pile 20 and a third connecting head 60 is provided at an upper end of the second shaft anchor pile 30. [

The first connection head 40 has a cylindrical connection sleeve 41 having an inner diameter corresponding to the outer diameter of the helical anchor pillar body 11 and a connecting sleeve 41 protruding from the outer circumferential surface of the connection sleeve 41, And a relative rotation preventing protrusion 42 for preventing relative rotation (idle rotation prevention) when the file 10 is mounted on a hydraulic rotary device (not shown) mounted on the backhoe.

The second connection head 50 includes a cylindrical connection sleeve 51 having an inner diameter corresponding to the outer diameter of the first shaft anchor pile 20 and a second shaft 50 projecting from the outer circumferential surface of the connection sleeve 51, And a relative rotation preventing protrusion 52 for preventing relative rotation when the anchor paddle 20 is mounted on a hydraulic rotary device (not shown) mounted on the backhoe.

The third connection head 60 includes a cylindrical connection sleeve 61 having an inner diameter corresponding to the outer diameter of the second shaft anchor pile 30 and a second connection shaft 61 protruding from the outer circumferential surface of the connection sleeve 61, And a relative rotation preventing protrusion 62 for preventing relative rotation when the anchor paddle 30 is mounted on a hydraulic rotary device (not shown) mounted on the backhoe.

The connecting sleeves 41, 51 and 61 and the relative rotation preventing projections 42, 52 and 62 may be integrally formed or integrally formed by welding.

The helical anchor main body 11 of the helical anchor pile 10 and the connecting sleeve 41 of the first connecting head 40 are connected to the upper end thread portion 15 of the helical anchor main body 11, It is possible to engage with the female screw portion 43 formed on the inner peripheral surface of the sleeve 41 by fastening.

The connecting sleeve 51 of the first shaft anchor pile 20 and the second connecting head 50 is connected to the upper end thread portion 21 of the first shaft anchor pile 20 and the female thread 51 formed on the inner peripheral surface of the connecting sleeve 51, It is possible to engage with the fastening portion 53 by fastening.

The connecting sleeve 61 of the second shaft anchor pile 30 and the third connecting head 60 is connected to the upper end male thread portion 31 of the second shaft anchor pile 30 and the female thread formed on the inner peripheral surface of the connecting sleeve 61 Can be coupled by fastening the portion (63).

The upper end of the helical anchor pile 10 and the first shaft anchor pile 20 are connected to the lower end threaded portion 22 of the first shaft anchor pile 20 and the connecting sleeve 41 can be connected by fastening the female threaded portion 43 thereof.

The upper end of the first shaft anchor pile 20 and the lower end of the second shaft anchor pile 30 are connected to the lower end thread portion 32 of the second shaft anchor pile 30 by a connection And the female screw portion 53 formed on the inner peripheral surface of the sleeve 51 can be fastened.

The fastening state of the male screw portion 15 at the upper end of the helical anchor pawl main body 11 of the helical anchor pawl 10 and the female screw portion 43 of the connecting sleeve 41 of the first connecting head 40 is maintained The first engagement state maintaining means 70 may be further provided.

The first fastening state maintaining means 70 is provided between the lower end of the connecting sleeve 41 of the first connection head 40 and the outer peripheral surface of the helical anchor pillar body 11 of the helical anchor pile 10, As shown in Fig.

The connection sleeve of the first connection head 40 coupled to the upper end of the helical anchor pile body 11 of the helical anchor pile 10 and the male thread portion 22 of the lower end of the first shaft anchor pile 20 And a second fastening state maintaining means (80) for maintaining the fastened state of the female threaded portion (43) of the first fastening means (41).

The second fastening state maintaining means 80 is constituted by a welding portion 81 for welding between the upper end of the connecting sleeve 41 of the first connecting head 40 and the outer peripheral surface of the first shaft anchor pile 20 can do.

The female thread portion 32 of the lower end of the second shaft anchor pile 30 and the female thread portion of the connecting sleeve 51 of the second connecting head 50 coupled to the lower end of the first shaft anchor pile 20 53 to maintain the fastened state of the first and second fastened state holders 90, 90, respectively.

The third fastening state maintaining means 90 is constituted by a welding portion 91 for welding between the upper end of the connecting sleeve 41 of the second connecting head 50 and the outer peripheral surface of the second shaft anchor pile 30 can do.

Hereinafter, the construction process of the helical anchor file according to the present embodiment will be described.

First, the helical anchor file 10, the first shaft anchor file 20, and the second shaft anchor file 30 are prepared.

In the illustrated example, the shaft anchor file includes the first shaft anchor file 20 and the second shaft anchor file 30, but the number of the shaft anchor files is substantially determined by the total anchor file depth.

The first connecting head 40, the second connecting head 50 and the third connecting head 60 are connected to the helical anchor pile 10, the first shaft anchor pile 20 and the second shaft anchor pile 30, Prepare in a combined state.

That is, the helical anchor pawl 10 is fastened to the helical anchor pawl main body 11 by fastening the female threaded portion 43 formed on the inner peripheral surface of the upper male thread 15 and the connecting sleeve 41 of the first connecting head 40 The second shaft anchor pile 30 is provided in a state where the upper end thread portion 21 and the second connecting head 50 are engaged with each other, The second connection head 50 is coupled to the upper end of the first shaft anchor pile 20 by fastening the female screw portion 53 formed on the inner circumferential surface of the connection sleeve 51, 30 is fastened to the upper end of the second shaft anchor pile 30 by fastening a female screw portion 63 formed on the inner circumferential surface of the connecting sleeve 61 of the upper male thread portion 31 and the third connecting head 60, Prepare the connection head 60 in a combined state.

The lower end of the connecting sleeve 41 of the first connection head 40 and the outer peripheral surface of the helical anchor pile body 11 of the helical anchor pile 10 are welded to each other to maintain the first fastened state by the welded portion 71 Means 70 is formed so that the female thread portion 43 formed on the inner peripheral surface of the connecting sleeve 41 of the first connecting head 40 and the upper male thread portion 15 of the helical anchor pillar body 11 is not loosened, And the second fastening state maintaining means 80 by the welding portion 81 is welded between the lower end of the connecting sleeve 51 of the second connecting head 50 and the outer peripheral surface of the first shaft anchor pile 20, So that the female thread portion 53 formed on the inner peripheral surface of the connecting sleeve 51 of the second connecting head 50 and the upper male thread portion 21 of the first shaft anchor pile 20 are not loosened Between the lower end of the connecting sleeve 61 of the third connecting head 60 and the outer peripheral surface of the second shaft anchor pile 30, The third fastening state maintaining means 90 is formed by the welding portion 91 so that the inner circumferential surface of the connecting sleeve 61 of the upper end male thread portion 31 of the second shaft anchor pile 30 and the connecting sleeve 61 of the third connecting head 60 So that the female screw portion 63 formed in the female screw portion 63 is not loosened.

As a result, the helical anchor pile 10, the first connecting head 40, the first shaft anchor pile 20, the second connecting head 50, the second shaft anchor pile 30, and the third connecting head 60, Are firmly coupled in a disengaged or disengaged state.

When the helical anchor pile 10 prepared as described above is mounted on a hydraulic rotary device (not shown) mounted on the backhoe and the hydraulic rotary device is rotated, the helices 12, 13 and 14 of the helical anchor pile 10 ) Descend while sequentially cutting the ground, and the helical anchor pile 10 is introduced into the ground.

Since the first connection head 40 coupled to the upper end of the helical anchor pawl 10 is provided with the relative rotation preventive protrusion 42 in the course of rotating the helical anchor pawl 10, 10 are not idle with the hydraulic rotary device, so that the rotational force of the hydraulic rotary device is transmitted to the helical anchor pile 10 as it is.

When the hydraulic rotary device is stopped, the helical anchor pile 10 is separated from the hydraulic rotary device, and the first and second helical anchor piles 10, And the shaft anchor pawl 20 is connected.

The connection between the upper end of the helical anchor pile 10 and the first shaft anchor pile 20 is achieved by connecting the first connecting head 40 of the helical anchor pile 10, And the lower end male thread portion 22 of the first shaft anchor pile 20 is fastened to the female threaded portion 43 of the connecting sleeve 41.

The fourth fastening state maintaining means 100 is welded between the upper end of the connecting sleeve 41 of the first connecting head 40 and the outer circumferential face of the first shaft anchor pile 20 to form the fourth fastened state holding means 100 by the welded portion 101, The female threaded portion 43 of the connecting sleeve 41 of the connecting head 40 and the lower end threaded portion 22 of the first shaft anchor pile 20 are not loosened or separated arbitrarily.

The second connecting head 50 coupled to the upper end of the first shaft anchor pile 20 is coupled to the hydraulic rotating device and the hydraulic rotating device is operated to connect the helical anchor pile 10 and the first shaft anchor pile (20) are continuously rotated while being simultaneously rotated.

When the first shaft anchor pile 20 is further inserted into the vicinity of the upper end of the first shaft anchor pile 20, the hydraulic rotating device is stopped, the first shaft anchor pile 20 is separated from the hydraulic rotary device, And the second shaft anchor pile 30 is connected to the upper end.

The connection between the upper end of the first shaft anchor pile 20 and the second shaft anchor pile 30 is achieved by connecting the connecting sleeve 51 of the second connecting head 50, And fastening the lower end threaded portion 32 of the second shaft anchor pile 30 to the female threaded portion 53. [

The upper end of the connecting sleeve 51 of the second connecting head 50 and the outer circumferential surface of the second shaft anchor pile 30 are welded to form the fifth fastening mating holding means 110 by the welding portion 111, The female threaded portion 53 of the connecting sleeve 51 of the connecting head 50 and the lower threaded portion 32 of the second shaft anchor pile 30 are not loosened or disengaged arbitrarily.

The male threaded portions 15, 21, 22, 31, and 32 and the female threaded portions 43, 53, and 63 are made of a multi-threaded screw such as a two-threaded screw or a three- It is desirable to be able to ensure a sufficient bonding strength while being able to do so.

The third connecting head 60 coupled to the upper end of the second shaft anchor pile 30 is coupled to the hydraulic rotating device and the hydraulic rotating device is operated to rotate the helical anchor pile 10, the first shaft anchor pile 20, And the second shaft anchor pile 30 are continuously rotated while being simultaneously rotated.

When the final shaft anchor file is penetrated in this manner, the construction is completed through the grouting step, the head parting step, and the dynamic material testing step.

A grouting agent injection hole H1 is formed at the lower end of the helical anchor pile body 11 of the helical anchor pile 10 to inject and fill the grouting agent and an upper end portion of the second shaft anchor pile 30 A grouting outflow hole H2 through which the grouting agent flows out is formed.

In the grouting step, the grouting agent is injected through the upper end of the uppermost shaft anchor pile, and the grouting anchor pile is inserted through the inside of the shaft anchor piles including the first shaft anchor pile 20 and the second shaft anchor pile 30 The helical anchor main body 11 of the helical anchor main body 11 of the helical anchor main body 11 of the helical anchor main body 11, Grouting agents are filled between the shaft anchor files including the file 10, the first shaft anchor file 20, and the second shaft anchor file 30, and the perforations formed on the ground.

The grouting agent is injected into the second shaft anchor file 30, the first shaft anchor file 20 and the helical anchor pile 10 through the grouting agent injection hole H1 to form the helical anchor pile 10, When the grouting agent is sufficiently filled between the shaft anchor piles including the first shaft anchor pile 20 and the second shaft anchor pile 30 and the perforations formed in the ground, grouting is performed on the upper end of the second shaft anchor pile 30, Outflow hole H2, the operator can confirm that the grouting agent has been sufficiently charged, so that the grouting agent can be accurately injected and filled.

FIG. 5 shows a second preferred embodiment of a helical anchor file according to the present invention.

This embodiment is characterized in that a plurality of cutouts 12a, 13a and 14a are formed in the outer periphery of the helixes 12, 13 and 14 of the helical anchor pile 10 so that the helixes 12, The resistance of the soil received by the helixes 12, 13 and 14 is minimized and the cutting edges 12b, 13b and 14b are formed in the cut-out portions 12a, 13a and 14a, The penetration of the helical anchor pile 10, the first shaft anchor pile 20 and the second shaft anchor pile 30 can be smoothly performed, the hydraulic rotary device can be made compact, and the equipment cost can be reduced .

Compared with the conventional helix and the helixes 12, 13 and 14 of the first embodiment, the helixes of the prior art and the helixes 12, 13 and 14 of the first embodiment are simply formed in the shape of a spiral plate The helix 12, 13 and 14 are resisted by the cut soil in the course of penetration while cutting the ground, so that the helical anchor pile 10, the first shaft anchor pile 20 and the second shaft anchor pile 20, The penetration of the hydraulic motor 30 may not be performed smoothly, and the equipment cost may increase because the hydraulic rotating device must be made large.

On the other hand, the helical anchor pile 10 according to the present embodiment has a plurality of cutouts 12a, 13a and 14a formed on the helixes 12, 13 and 14 so that the helixes 12, The resistance due to the cut soil is minimized in the process of penetration while being cut so that the penetration of the helical anchor pile 10, the first shaft anchor pile 20 and the second shaft anchor pile 30 is smoothly performed, The use of a small hydraulic rotary device can reduce equipment costs.

In addition, since the helix of the prior art and the helix of the first embodiment described above are formed in a simple spiral plate shape, and since only one cutting edge is provided at the lower end of each of the helixes 12, 13 and 14, The performance can not be smoothly introduced between the helical anchor pile 10 and the first shaft anchor pile 20 and the second shaft anchor pile 30, .

On the other hand, the helical anchor pile 10 according to the present embodiment is provided with the cutting edges 12b, 13b, and 14b on the plurality of cutouts 12a, 13a, and 14a formed on the helixes 12, Therefore, the cutting performance of the ground is improved, so that the penetration of the helical anchor pile 10, the first shaft anchor pile 20 and the second shaft anchor pile 30 is smoothly performed, Thereby reducing equipment costs.

The outer circumferential portions 12c, 13c and 14c between the cut-out portions 12a, 13a and 14a of the helix 12, 13 and 14 further include a plurality of cutting protrusions 12d, 13d and 14d protruding downward, It is preferable to further improve the performance of the display device.

FIG. 6 shows a third preferred embodiment of a helical anchor file according to the present invention.

The helical anchor file according to the present embodiment is welded and fixed to the lower portion of the upper threaded portion 15 of the helical anchor pile 10 to determine the lower end position of the first connecting head 40, A positioning and welding ring 16 to which the lower end of the second connecting head 40 is welded and a lower end of the second connecting head 50 are welded and fixed to the lower portion of the upper end thread portion 21 of the first shaft anchor pile 20, A positioning and welding ring 23 to which the lower end of the second connection head 50 is welded and a lower end of the upper end thread portion 31 of the second shaft anchor pile 30, A positioning and welding ring 33 for determining the lower end position of the head 60 and welding the lower end of the third connection head 60 and a positioning and welding ring 33 for positioning the lower end of the lower end thread portion 22 of the first shaft anchor pile 20 The upper end of the first connection head 40 is fixed and the upper end of the first connection head 40 is welded to the upper end of the first connection head 40, And the welding ring 24 are welded and fixed to the upper portion of the lower threaded portion 32 of the second shaft anchor pile 30 to determine the upper position of the second connection head 50 and the second connection head 50 And a positioning and welding ring (34) in which the upper end of the positioning and welding ring (34) is welded.

6 and 7, W1 indicates the positioning and welding rings 16, 23, 24, 33, and 33 for the helical anchor file main body 11, the first shaft anchor file 20 and the second shaft anchor file 30, 34).

In FIG. 6, N denotes the positioning and welding ring 16, the positioning and welding ring 23, the positioning and welding ring 24, the positioning and welding ring 33, and the positioning and welding ring 34, The positioning and welding ring 16, the positioning and welding ring 23, and the positioning and clamping unit 40 in welding the first connection head 40, the second connection head 50, and the third connection head 60 to the first connection head 40, Between the welding ring 24, the positioning and welding ring 33 and the positioning and welding ring 34 and the first connection head 40, the second connection head 50 and the third connection head 60 As shown in Figs. 6 (a) and 7 (b), welding notches N are formed, respectively, as shown in Figs. 6 Welding can be performed more firmly by welding the notch N so that the welding material is filled.

The welding notch N comprises a positioning and welding ring 16, a positioning and welding ring 23, a positioning and welding ring 24, a positioning and welding ring 33 and a positioning and welding ring 34 and the first connection head 40, the second connection head 50 and the third connection head 60 at an upper or lower end.

6 and 7, reference numeral W2 denotes a positioning and welding ring 16, a positioning and welding ring 23, a positioning and welding ring 24, a positioning and welding ring 33, and a positioning and welding ring 34 and the first connecting head 40, the second connecting head 50 and the third connecting head 60. [

According to the present embodiment, the helical anchor file main body 11 of the helical anchor file 10, the first connection head 40, the first shaft anchor file 20 and the second connection head 50, The anchor file 30 and the third connecting head 60 and the first connecting head 40 and the first shaft anchor pile 20 and the second connecting head 50 and the second shaft anchor pile 30 are screwed Since the relative positions are determined by the positioning and welding rings 16, 23, 24, 33, and 34 in the process of fastening in the above-described manner, not only the operation is simple, So that the construction quality is uniform.

Since the other constituent parts in this embodiment are the same as those in the first and second embodiments, the same parts are denoted by the same reference numerals, and a detailed description thereof will be omitted.

8 to 10 show a fourth preferred embodiment of a helical anchor file according to the present invention.

The helix anchor file according to the present embodiment is obtained by combining the heavenly crown 200 at the bottom of the helical anchor file body 11 of the helical anchor file 10.

The perforating crown 200 is a portion that punctures while contacting with the ground at the time of penetration of the helical anchor pile.

The perforating crown 200 includes a crown main body 210 coupled to the lower end of the helical anchor pawl body 11, a plurality of outer circumferential cutting tips 220 protruding from the outer circumferential surface of the crown main body 210, And a plurality of lower side cutting tips 230 protruding from a lower end surface of the crown main body 210.

The crown main body 210 is integrally formed with a connecting tube portion 211 at an upper end thereof and a female screw portion 212 formed on the inner circumferential surface of the connecting tube portion 211 is connected to a lower end threaded portion 211 formed at the lower end of the helical anchor pillar body 11, And can be coupled to the lower end of the helical anchor pawl body 11 by fastening it to the helical anchor pawl body 17. It is preferable to weld between the upper end of the connecting tube portion 211 and the outer circumferential surface of the helical anchor pawl body 11 so that the threaded portion 17 and the female threaded portion 212 are not loosened arbitrarily. In FIG. 8, reference numeral 240 denotes a weld.

The crown main body 210 may be integrally formed with the outer cutting edge 220 and the lower cutting edge 230. In order to increase the cutting force and durability while simplifying the manufacturing process, It is preferable that the outer cutting edge 220 and the lower edge cutting edge 230 are formed of a material having a high hardness and excellent cutting ability.

Industrial diamond may be used as the material of the outer cutting edge 220 and the lower edge cutting edge 230. However, since the helical anchor pile of the present invention is not used repeatedly, It is preferable to use a relatively low-cost manganese steel (Hi-Mn steel).

The helical anchor file according to the present embodiment has a crown 200 attached to the bottom of the helical anchor pile body 11 of the helical anchor pile 10. The crown 200 has a high hardness, The outer side cutting tip 220 and the lower side cutting tip 230 are made of a superior material and therefore the helical anchors are inserted into the ground before the helix 12, The ground is punctured by the outer cutting tip 220 and the lower cutting tip 230 which are excellent in cutting power first and then the ground where the helixes 12, 13 and 14 are drilled is cut, So that the burden on the cutting of the helixes 12, 13 and 14 can be reduced, so that the construction of the helical anchor pile can be performed more quickly.

The crown main body 210 is made of a material that is easy to manufacture. The outer circumferential cutting tip 220 and the lower cutting tip 230 are used once by using a hygmanganese steel which is relatively inexpensive and excellent in cutting force and durability, It is possible to economically perform the construction of the helical anchor pile having the characteristics of being embedded in the helical anchor pile.

The helical anchor pile according to the present embodiment is formed by combining a perforating crown 200 having an outer cutting tip 220 and a lower cutting tip 230 with excellent cutting power at the lower end of the helical anchor pile 10 Therefore, it is possible to drill not only the ground with the general soil but also the rock, so that the helical anchor pile can be constructed irrespective of the type of the ground.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Helical anchor file 11: Helical anchor file body
12, 13, 14: Helix 12a, 13a, 14a:
12b, 13b, 14b: cutting edge 20: first shaft anchor file
30: second shaft anchor file 40: first connection head
50: second connection head 60: third connection head
200: crowned crown 210: crown body
220: outer cutting tip 230: bottom cutting tip

Claims (1)

A helical anchor file (10) comprising a helical anchor file body (11) and a plurality of helixes (12, 13, 14) coupled to the outer circumferential surface of the helical anchor file body (11); A first shaft anchor pile 20 located at an upper portion of the helical anchor pile 10 and having a lower end connected to an upper end of the helical anchor pile body 11; A second shaft anchor pile 30 located at an upper portion of the first shaft anchor pile 20 and having a lower end connected to an upper end of the first shaft anchor pile 20; A first connection head (40) coupled to an upper end of the helical anchor pile (10); A second connecting head (50) coupled to an upper end of the first shaft anchor pile (20); And a third connecting head (60) coupled to an upper end of the second shaft anchor pile (30), the helical anchor file
The helix 12, 13, and 14 have a plurality of cutouts 12a, 13a, and 14a formed on the outer periphery thereof, and cutting edges 12b, 13b, and 13b formed on one side of the cutouts 12a, 14b,
The outer circumferential portions 12c, 13c and 14c between the cutouts 12a, 13a and 14a of the helixes 12, 13 and 14 further comprise a plurality of cutting protrusions 12d, 13d and 14d protruding downward,
The first connection head 40 includes a connection sleeve 41 having an inner diameter corresponding to the outer diameter of the helical anchor pillar body 11 and a connection sleeve 41 protruding from the outer circumferential surface of the connection sleeve 41, A relative rotation preventing protrusion 42 for preventing relative rotation when mounting the first shaft anchor pile 20 to the hydraulic rotating device and a lower end thread portion 15 of the helical anchor pile 10 and a lower end And a female screw portion (43) screwed to the screw portion (22)
The second connection head 50 includes a cylindrical connection sleeve 51 having an inner diameter corresponding to the outer diameter of the first shaft anchor pile 20 and a second shaft 50 projecting from the outer circumferential surface of the connection sleeve 51, (21) of the first shaft anchor pile (20) and the second shaft anchor (21) of the first shaft anchor pile (20) for preventing relative rotation when mounting the anchor pile (20) And a female screw portion (53) screwed to the lower male screw portion (32) of the pile (30)
The third connection head 60 includes a cylindrical connection sleeve 61 having an inner diameter corresponding to the outer diameter of the second shaft anchor pile 30 and a second connection shaft 61 protruding from the outer circumferential surface of the connection sleeve 61, A relative rotation preventing projection 62 for preventing relative rotation when the anchor pile 30 is mounted on the hydraulic rotary apparatus and a female screw portion (not shown) fastened to the upper end screw portion 31 of the second shaft anchor pile 20 63,
The lower end of the first connection head 40 is welded and fixed to the lower portion of the upper end thread portion 15 of the helical anchor pile 10 to determine a position where the lower end of the first connection head 40 is welded And welding ring 16,
The lower end of the second connection head 50 is welded and fixed to the lower portion of the upper end thread portion 21 of the first shaft anchor pile 20 and the lower end of the second connection head 50 is welded The crystal and welding rings 23,
The lower end of the third connection head 60 is welded and fixed to the lower portion of the upper end thread portion 31 of the second shaft anchor pile 30 and the lower end of the third connection head 60 is welded The crystal and welding rings 33,
The upper end of the first connection head 40 is welded and fixed to the upper portion of the lower end thread portion 22 of the first shaft anchor pile 20 to determine the upper end position of the first connection head 40, The determining and welding ring 24,
The upper end of the second connection head 50 is welded and fixed to the upper portion of the lower end thread portion 32 of the second shaft anchor pile 30 to determine the upper end position of the second connection head 50, And a determining and welding ring (34)
Further comprising a perforating crown (200) coupled to a lower end of the helical anchor pawl body (11) of the helical anchor pawl (10)
The perforating crown 200 includes a crown main body 210 coupled to the lower end of the helical anchor pawl body 11, a plurality of outer circumferential cutting tips 220 protruding from the outer circumferential surface of the crown main body 210, And a plurality of lower side cutting tips (230) protruding from a lower end surface of the crown main body (210).

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