KR101870714B1 - Prefabricated steel pole for soil excavation and its construction method - Google Patents

Abstract

The present invention relates to a prefabricated steel pipe, and more particularly to a prefabricated steel pipe which is used for constructing a steel pipe in a ground by rotating excavation using a lower excavating blade and an excavating screw without a separate excavation process using gravity, This makes it possible to improve the quality of the construction and to reduce the air shortage and the construction cost by forming a solid ground with the convenience of construction, and it is also possible to perform excavation and drilling through the vicinity of the upper excavation screw without unnecessary excavation according to installation of the pre- By making it possible to support the ground firmly, it is possible to prevent the slope displacement phenomenon by more rigid construction without damaging the ground, such as having the function of the former main axis without having a separate pre- The excavating blade and the excavating screw to prevent the decrease Before digging Press-Fit will be erected on the main steel pipe steel pipe and its main construction methods.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of constructing a steel pipe for a steel pipe,

The present invention relates to a prefabricated steel pipe, and more particularly, to a prefabricated steel pipe which has advantages in that it can be used conveniently in construction of a steel pipe, The present invention relates to a method of constructing a prefabricated press-in type prefabricated steel pipe and a steel pipe main construction method.

Generally, a pole used as a support for a communication line, a distribution line, or the like is largely made of wood, reinforced concrete, steel, or the like.

On the other hand, in general, a steel pipe stock is mainly used for a communication line, and a reinforcing concrete pole is used for a distribution line. However, when a load of a pole is not large or a high ground surface is not required, These steel pipe joints have become commonplace in their use.

These conventional steel pipes are mostly constructed as a prefabricated structure for the convenience of construction and handling, and the separated steel pipes are assembled and assembled continuously according to site requirements or required length on site.

On the other hand, when a prefabricated steel pipe having a smaller diameter than the reinforcing concrete pole is installed, the excavation paper is backfilled and fixed with excavation of the ground and a steel pipe as a foundation by using gravity or a backhoe or an auger crane , It is necessary to assemble another steel pipe with a required length to the upper part of the steel pipe, and particularly, the steel pipe pipe should be firmly supported by constructing another steel pipe pipe together.

However, since the size of the excavation hole excavated relative to the diameter of the steel pipe is relatively large at the time of constructing the poles at the time of construction as described above, it is necessary to perform the backfilling and chopping operations of the soil, There was a weakening problem.

In addition, since the bearing capacity of the soil buried with the excavated soil is relatively weak compared with that before excavation, even when the excavated soil is applied, there is a problem in that the slope displacement phenomenon that the pole is inclined due to the tension of the electric line is frequently generated .

Korea Utility Model Registration No. 20-0121929. Korean Patent Laid-Open Publication No. 10-2017-0013066.

The present invention has been devised to solve the above-mentioned problems, and it is an object of the present invention to provide a method of constructing a steel pipe by using a lower excavation blade and a rotary excavation using an excavation screw without using an excavation process using a gravity, a backhoe, It is possible to form a solid foundation by forming a solid foundation by making it easy to construct, and to improve the quality of the construction and to reduce the air shortage and the construction cost. The present invention provides a method for casting a steel pipe.

In addition, it is possible to excavate and securely support the ground through the excavation of the upper excavation screw without unnecessary excavation according to the installation of the pre-excavation site, so that the excavation can be carried out without damaging the ground, A method for preventing slope displacement by more rigid construction and preventing the reduction of the bearing capacity of the ground due to excavation and backfilling, And it is a further object of the present invention to provide the present invention.

As a concrete means for accomplishing the above object, there is a method of manufacturing a hollow foundation, And
And at least one hollow connection main body coupled to and extending from the top of the foundation,
In the fundamentals,
And the lower portion is a downwardly inclined cutting edge portion facing the lower center of the lower portion. The lower portion of the cutting edge portion is formed between the excavating blade and the inner circumferential surface of the foundation caulking An excavation blade configured to form an excavation inlet groove that allows the introduction of the soil into the interior of the foundation;
A spiral drill screw formed on the lower circumference to enable direct excavation of the ground; And
And a helix formed around the upper portion of the excavation screw, the excavation screw being capable of direct excavation of the ground and having a diameter larger than the diameter of the excavation screw,
On the excavation day,
And an upper open-type gravel-like guide groove that extends from the lower end of the foundation to the intermediate portion of the cutting edge to connect the gravel-
In the excavation screw industry,
And a spiral plate protruding from the lower end to an upper portion in a sloping manner so as to form an inclined slope extending upward from the lower end to an upper portion of the digging screw,
The base includes a first coupling portion at the upper end,
A second engaging portion having a first engaging portion and an insertion engaging force;
A third coupling unit having an insertion coupling force with the second coupling unit; And
Further comprising fixing means for coupling and fixing the base and the connection main body and another connection main body,

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A foundation mounting step for mounting the foundation top to the rotary excavation drill rig;

A basic construction step of excavating the ground through the excavating blade, the excavating screw and the excavating screw by applying a load and a rotational force to the foundation, and rotating and excavating the foundation;

Dismantling the equipment to dismantle the rotary excavation equipment from the pressurized foundation cavern; And

And a connection main construction step of connecting the connection main body from the top of the dismantled basic excavation equipment,

In the basic construction step,

And a foundation to be press-fitted into the ground is auxiliary excavated at a lower portion through a lower excavation screw, and a base to be press-fitted into the ground is excavated by an upper excavation screw Additional excavation is carried out from the upper part through the site and excavated as it is to the site of excavation screw,

And by performing a compaction by applying a load to the upper part of the vicinity of the press-fitted excavation screw.

As described above, according to the present invention, there is provided a method of constructing a sand blasted excavation type press-in type prefabricated steel pipe main body and a steel pipe main construction method in which the excavating blade and the excavating screw near the base are formed, , It is possible to perform direct excavation and rotary excavation indentation without any additional ground excavation process when the foundation is installed in the ground, resulting in the formation of a solid ground, the convenience of construction and the shortening of air, as well as the remarkable reduction of the construction cost. You can get it.

In addition, it is possible to directly press-fit the ground on the ground without excavation and backfilling of the ground, and it is possible to impart the function of the pre-excavation site without installing a separate pre-excavation site through the excavation screw near the foundation, It is possible to receive the support force of the hard ground as it is. In particular, it is possible to easily fill the inside of the steel pipe which is press-fitted through the earth guide groove of the excavating blade, so that the center of gravity can be placed, It is.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a sandblasted excavation-type press-fitting type steel pipe having an excavation blade and a drilling screw at the vicinity of the present invention. FIG.
FIG. 2 is a perspective view showing an assembled perspective view of a gypsum rotary excavation type press-fitting type steel pipe having an excavating blade and a drilling screw at the vicinity thereof.
3 is a cross-sectional view of a sandblasted excavation-type press-fit type prefabricated steel pipe in which the excavating edge of the present invention and the vicinity of the excavating screw are formed.
FIG. 4 is another embodiment of the excavating blade of the sandblasted excavation type press-in type prefabricated steel pipe in which the excavating blade of the present invention and the excavating screw are formed.
FIG. 5 is a perspective view of an excavating screw of a sand blasted digging type prefabricated steel pipe having an excavating blade and a slab of the present invention.
FIG. 6 is a perspective view of another embodiment of the excavating screw of the sand blasted excavation-type prefabricated steel pipe in which the excavating blade of the present invention and the excavating screw are formed.
FIG. 7 is another embodiment in which the excavating blade of the present invention and the sand blasting excavation type press-fit type prefabricated steel pipe joint of FIG.
8 is an overall process diagram showing a method of predominantly constructing a sandblasted excavation type press-in type prefabricated steel pipe with an excavating edge of the present invention and an excavating screw near its periphery;
FIG. 9 is a schematic view showing a basic installation step of a method for installing a sand blasted excavation-type press-fit type prefabricated steel pipe with an excavating edge and an excavating screw at the vicinity of the present invention.
10 is a simplified schematic view of a basic construction step of a method of installing a sand blasted excavation type press-fit type prefabricated steel pipe with an excavating blade and a drilling screw near the edge of the present invention.
FIG. 11 is a basic construction step of another embodiment of the present invention, in which the excavating blade and the excavating screw are formed at the site of the sand blasted excavation type press-fitting type prefabricated steel pipe main construction method.
12 is a view showing another basic construction step of a method of sandwiching a sand blasted excavation type press-fit type prefabricated steel pipe with an excavating edge of the present invention and an excavated screw around the same.
FIG. 13 is a main part view of a state in which a base stock of a sand blasted excavated press-fit type prefabricated steel pipe main construction method in which the excavating edge of the present invention and the excavating screw at the vicinity thereof are formed.
FIG. 14 is a schematic view of the equipment dismantling step of the method of predicting a sandblasted excavation-type press-fit type prefabricated steel pipe having an excavating blade and an excavating screw in accordance with the present invention;
FIG. 15 is a schematic view of a connection main construction step of a construction method of a sand blasted excavation type press-fit type prefabricated steel pipe main construction method in which the excavating edge and the excavating screw near the present invention are formed.
FIG. 16 is a perspective view showing another embodiment of the joint construction step of the method of sandwiching a sand blasted excavation type press-fit type prefabricated steel pipe main construction method in which the excavating edge of the present invention and the excavating screw are formed.
Fig. 17 is a state view showing another embodiment in which the excavating blade and the excavating screw of the present invention are formed and the excavated screw is used for the excavation type excavation type prefabricated steel pipe.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view of a gypsum rotary excavation type prefabricated steel pipe having an excavation blade and a drilling screw at the vicinity of the present invention, FIG. 2 is an assembled perspective view of a sandblasted excavation type prefabricated steel pipe, 3 is a cross-sectional view of a sandblasted excavation-type press-fit type steel pipe in which the excavating edge of the present invention and the vicinity of the excavating screw are formed.

As shown in FIGS. 1 to 3, the earth-moving rotary excavation-type prefabricated steel pipe main body 1 in which the excavating blade and the excavating screw at the present invention are formed has a foundation 100 which is rotary- .

Here, the foundation 100 has a vertical length and has a hollow tube shape. The lower part of the foundation 100 is rotationally excavated and press-fitted into a foundation of the steel pipe 1 when the steel pipe 1 is installed. And a first engaging portion 150 for engaging with the connecting main body 200 is formed at the upper end.

At this time, the first engaging part 150 has a diameter smaller than the diameter of the base 100, and is formed by a stepped structure with the base 100, and the first engaging hole 151 is formed around the first engaging part 150.

The excavating blade 110, the excavating screw 120, and the excavating screw workpiece 130 are formed in the foundation 100.

The excavating blade 110 is formed to protrude downward from the lower end of the foundation 100 to enable direct excavation of the ground.

At this time, the excavating blade 110 is formed as an excavating-edge-to-be-engaged portion 111 which is inserted into and coupled to the interior of the base 100 at the bottom, Through welding or the like.

The cutting edge portion 112 protrudes downward from the foundation 100 and the both sides of the excavation edge 110 are formed so as to protrude downward And the lower side is inclined downward toward the center so that both sides are formed in the shape of "∨".

Between the both side surfaces of the excavating blade engaging portion 111 of the excavating blade 110 and the inner circumferential surface of the base 100 is formed a soil inlet groove 101 in which the inside and the outside of the base 100 communicate with each other. So that the soil is introduced and charged into the foundation 100 when the ground is excavated through the earth-moving entrance groove 101.

The excavating blade 110 having the above-described structure can be formed in various ways. First, referring to FIGS. 1 to 3, the excavating blade 110 has the same width as the outer diameter of the base 100 and the inner diameter of the base 100 Shaped block having a smaller thickness.

In this case, when the excavating blade 110 is constructed in the shape of a plate-like block, the upper portion of the excavating blade 110 has a reduced width to form an excavating blade engaging portion 111 which is inserted into and welded into the base 100, And a lower portion thereof is formed as a cutting edge portion 112 which is downwardly inclined with both sides in the width direction facing the lower end center, and the soil inlet grooves 101 are formed on both sides of the excavating-

4, a plate having a width equal to the outer diameter of the base 100 and a thickness smaller than the inner diameter of the base 100 may be formed in a cross- It can be configured as a block shape having a plane cross shape.

In this case, when the excavating blade 110 is formed in the shape of a cross-shaped block, the upper portion of the excavating blade 110 has a cross-shaped excavating-edge-engaging portion 111 having a reduced width and being inserted into and welded to the inside of the base 100, And a lower portion thereof is a cross-shaped cutting edge portion 112 which is downwardly inclined with the four sides of the cruciform being directed toward the lower center, and the four earth-like inlet grooves 101 are formed on all sides of the excavating-

Also, it is possible to further include a soil induction groove 113 for guiding the smooth inflow of the gravel through the gravel inlet groove 101 during the excavation through the excavation blade 110.

At this time, the gravel-like guiding grooves 113 are formed in the form of an upper open "U-shaped groove" leading to the middle portion of the cutting edge portion 112 which is removed from the lower end of the foundation 100 from the excavating- It is possible to connect the adjacent soil inflow grooves 101 and to extend the soil inflow grooves 101 through the grooves 113 and to minimize the interference with the excavating blades 110 during the excavation process, So that it is possible to smoothly induce the soil to the inside of the main body 100.

That is, the excavating blade 110 is constructed such that the excavating blade 110 can be directly excavated to the ground through the excavating blade 110 without a separate excavator construction in construction of the foundation 100, If it is formed in the shape of a plate, it will be easy to excavate in a relatively soft ground, and when it is formed in a cross shape, its bonding force with the foundation 100 will be increased and it will be applicable to a relatively hard ground.

The excavation screw 120 is formed in a spiral shape extending to the upper portion of the excavation blade 110 around the lower portion of the foundation 100.

At this time, the excavating screw 120 is spiraled about one rotation from the upper part of the excavating blade 110 to assist excavation of the excavating blade 110 to assist smooth excavation of the foundation 100, .

The excavation screw runner 130 is formed around the upper portion of the foundation 100 and is formed in a spiral shape so as to enable direct excavation of the ground, and is configured at a lower position of the first joint portion 150.

At this time, the excavation screw near-work site 130 is formed to have a diameter (at least twice or more) larger than the diameter of the excavation screw 120 to assist smooth excavation of the foundation 100, So as to support the upper portion of the base 100 which is rotationally excavated and press-fitted so as to be given binding force with the ground.

On the other hand, the excavation screw workpiece 130 is composed of a spiral plate having a lower end thereof contacting the periphery of the foundation 100, and a projecting sloping shape extending from the lower end to the upper end and protruding upward.

In addition, the space portion is formed at the upper part of the excavation screw runner 130 having the spiral plate constructed as described above, and the space portion constitutes a slurry support groove 131 in which the slurry is introduced and supported.

That is, the excavating screw near-work site 130 is formed in a spiral shape to have the excavating force of the ground, while the soil resistance is secured through the inclined structure, so that the foundation 100 has a strong ground supporting force, Such as to prevent it from falling into the groove, and to perform the role of the root with the rotary excavation.

Meanwhile, various configurations can be employed in constituting the excavation screw working site 130 constructed as described above on the foundation 100.

1 to 3, the lower end of the excavation screw 130 is welded and fixed around the foundation 100 as shown in FIG. 5 And the excavating screw workpiece 130 may be integrally formed with the foundation 100.

In addition, the excavation screw work site 130 can be configured to enable the excavation screw work site 130 to be adjusted in position on the foundation 100 as shown in FIG.

In order to do this, the base 100 may further include a horizontal through-hole height adjusting hole 102 ', 102', 102 ', 102', 102 '

The base 100 may further include a height adjusting pipe 140 through which the base 100 penetrates and which can slide upward and downward from the penetrating base 100.

At this time, the height adjusting pipe 140 is provided with a fixing hole (not shown) which is connected to the height adjusting holes 102 and 102 'of one of the bases 100 and enables the bolts B and N to be fastened 141).

At this time, the lower end of the excavating screw workpiece 130 is welded and fixed around the height adjusting pipe 140.

That is, when the excavation screw workpiece 130 is coupled to the foundation 100 through the height control pipe 140, the excavated screw workpiece 130 can be connected to the foundation 100 through the height control pipe 140, It is possible to adjust the depth at which the base 100 is rotated or press-fit or to adjust the ground supporting position of the excavation screw 130 at the height adjustment.

The connection main body 200 has a vertical length and is hollow and has the same diameter as the base 100. The connection main body 200 is connected to the upper end of the base 100 to adjust the length of the steel pipe main body 1 And at least one can be constituted.

At this time, the connection main body 200 has a second coupling portion 250 for coupling with the first coupling portion 150 of the base 100 at the lower end thereof, and another coupling portion 200 A second coupling hole 251 is formed in the second coupling portion 250 and the third coupling portion 260 so as to pass through the second coupling portion 250 and the second coupling hole 260, And a third coupling hole 261 are formed.

The first and second coupling portions 150 and 250 for coupling the base 100 and the coupling main body 200 are inserted and coupled with each other, (251) are configured to communicate with each other.

In this case, the structure in which the base 100 and the coupling 200 are inserted and coupled is not limited, but the first coupling part 150 may have a smaller diameter than the base 100, The first engaging portion 150 may be formed to be inserted into the lower end of the first engaging portion 250 and the third engaging portion 260 may have a reduced diameter or the second engaging portion 250 may have a reduced diameter. And the third engaging part 260. In the present invention, the reduced diameter of the first engaging part 150 and the third engaging part 260 is applied.

Also, in the present invention, the first, second, and third coupling holes 151, 251, and 261 of the first, second, and third coupling portions 150, 250, .

In this case, when forming the first, second, and third coupling holes 151, 251, and 261 forming the upper and lower ends, first, referring to FIGS. 1 to 3, .

In addition, the first, second and third coupling holes 151, 251 and 261 constituting upper and lower ends are formed so as to intersect with each other in the form of "cross" can do.

The connecting bolt 210 is coupled to the connecting bolster 210 so as to be inserted around the connecting bolster 210. The upper end of the connecting bolster 200 is connected to the upper end of the connecting bolster 210, The closing cap 30 may be closed in order to prevent the inflow of foreign matter.

In order to connect the base 100 and the coupling 200 constructed as described above to each other, a fixing means 300 for imparting a coupling force of the first, second, and third coupling portions 150, 250, ) Is further included.

The fixing means 300 includes an elongated bolt 310 horizontally penetrating the base 100 and the first, second and third engaging holes 151, 251 and 261 of the connecting main body 200, And a nut 320 to be fastened to the bolt 310 is formed as a set.

That is, the fixing means 300 is coupled to the first, second, and third coupling holes 151, 251, and 261 of each row, and the first, second, and third coupling holes 151 and 251 261 are fixed to the upper and lower rows in the same direction when they form the same row and the same row, and the first, second, and third coupling holes 151, 251, 261 intersect with each other The upper and lower rows are fixed.

Hereinafter, a construction method for constructing a sandblasting drilling press-fit type prefabricated steel pipe main body having the excavating blade and the excavating screw around thereof will be described in detail with reference to the accompanying drawings.

FIG. 8 is an overall process diagram showing a main method of constructing a sandblasted excavation-type press-fitting type prefabricated steel pipe in which the excavating edge of the present invention and the excavating screw are formed.

Referring to FIGS. 1 to 7, as shown in FIG. 8, the method of predicting a gypsum rotary excavation type press-fit type prefabricated steel pipe having an excavation blade and an excavating screw near the excavation method according to the present invention includes a foundation installation step (S100) , An equipment disassembly step (S300), and a connection main construction step (S400).

First, in step S100,

As shown in FIG. 9, the present invention is a step for mounting the steel pipe main body 1 on a ground by rotary excavation and press fitting, and mounting the same on a rotary excavation equipment 10 for rotary excavation. A conventional backhoe, an auger crane, or the like can be applied instead of being newly implemented.

On the other hand, in applying the backhoe to the rotary excavation apparatus 10, the backhoe includes a speed reducer (not shown) having a rotary shaft tube (not shown) applied to the vicinity of the backhoe-mounted hydraulic excavation screw proposed by the applicant of the present invention. The upper end of the base 100 is coupled to the rotary shaft tube of the speed reducer 11. In this case,

Thereafter, the basic main construction step (S200)

A method of constructing a foundation 100 of a steel pipe 1 to be installed on a ground by using the excavating blade 110, the excavating screw 120 and the excavating screw 120, The main body 100 is rotated and press-fitted into the ground.

Specifically,

As shown in FIG. 10, the rotary excavation drilling rig 10 equipped with the foundation 100 is moved to a construction site where the steel pipe 1 is to be installed, and excavation is performed. First, the excavation blade 110 is used The excavation may be performed by applying a load and a rotational force to the foundation 100 in a state where the excavator is positioned on the ground to be excavated.

Therefore, when the foundation 100 is subjected to a load with rotation, the cutting edge 112 of the excavating blade 110 digs into the ground. Thus, the ground can be pierced by rotary excavation, The excavating blade 110 can be easily crushed and excavated when various soil materials such as maras are formed through the cutting edge 112.

The excavation screw 120 is formed around the lower portion of the foundation 100 to perform the rotary excavation and press-fitting of the ground as described above, The excavated area around the excavation hole is auxiliary excavated together with the rotary excavation indentation of the ground via the excavator 110.

Since the auxiliary excavation through the excavation screw 120 performs additional excavation when the excavator 100 enters the excavator, the frictional resistance between the surface of the foundation 100 and the ground is minimized Thereby increasing the excavation force. At the same time, the excavation screw 120 is tightly coupled to the ground in a state where excavation is completed.

Further, in the process of performing the excavation through the excavation screw 120, the upper excavation is performed through the excavation screw near the excavation screw 130 at the upper part of the foundation 100.

At this time, the additional excavation through the excavation screw near-work site 130 allows the excavation screw work site 130, which is further excavated by the excavation screw 130, to be rotary-excavated in the ground when the foundation 100 enters the excavation hole .

That is, the additional excavation of the excavation screw near-work site 130 is performed by at least a depth at which the first excavation screw 150 is exposed to the ground while the excavation screw near-work site 130 is rotationally excavated and inserted into the ground. The excavated screw workpiece 130 thus rotated is press-fitted into the soil support groove 131 formed in the upper portion of the excavation screw 130 when the screw workpiece 130 is rotationally excavated into the ground. It will be able to carry out the role of Jeonju market price.

Meanwhile, in the process of excavating the ground using the foundation 100, the excavation screw workpiece 130 performing the excavation of the upper part can adjust the elevation height from the foundation 100 .

6, the excavation screw drilling machine 130 can be selectively fixed to the height adjusting holes 102 and 102 'at either end of the foundation 100 through the height adjusting pipe 140 The adjustment of the height of the excavation screw runner 130 enables adjustment of the depth at which the excavation screw drums 130 are supported in the depth or the ground where the excavation and rotary excavation of the foundation 100 is performed.

10, a height adjustment hole 102 (102) located at the uppermost portion of the foundation 100 when the foundation 100 is rotated and inserted at the maximum, 'By fixing the height-adjusting pipe 140 to the position of the excavating screw 130. As shown in FIG.

Also, as shown in FIG. 11, it is possible to fix the excavating screw rotor 130 at a low position when the foundation 100 is rotated and press-fitted relatively low.

Also, as shown in FIG. 12, it is possible to fix the excavating screw workpiece 130 at a lower position when the base 100 is rotated and press-fitted to the maximum extent and the support depth of the excavating screw workpiece 130 is adjusted .

Thereafter, the upper portion where the excavating screw near-work site 130 is rotationally excavated and press-fitted gives a bearing force to the excavated screw work site 130 which is rotationally excavated and press-fitted by applying a load to the excavated soil received in the excavated soil support grooves 131.

In other words, as described above, the basic construction step (S200) is performed by directly rotating the ground by using the foundation 100 to perform the excavation step of excavating the construction site at the time of constructing the ordinary foundation, It is possible to push and pull the base 100 simultaneously with the excavation of the foundation 100 without having to carry out an embedding step for embedding the base material into the excavation paper and embedding the embedding base material in the embedding step. It is not necessary to install a conventional prime mover near the excavation screw near-work site 130, thereby significantly shortening the construction time.

In addition, the foundation 100, which is rotationally excavated and press-fitted as described above, has a lower bearing capacity than that of the original soil when the soil is buried by the conventional backfill when the conventional technique is applied with the conventional technique, In the present invention, as shown in Fig. 13, the ground is directly press-fitted into the ground without rotating back, and the original supporting force of the ground can be received as it is as the ground. Thus, The ground supporting force due to the increase of the coupling force with the ground is further increased through the excavation screw 120 formed around the foundation 100. [

In the present invention, the gravel excavated in the process of excavating the ground using the foundation 100 is introduced into the foundation 100 through the excavating blade 110 and the epidermal inflow groove 101 of the foundation 100, So that the inside support and the center of gravity are located at the bottom, so that the stable supporting force and the rigidity can be added.

Then, in the equipment disassembly step S300,

The step of separating the rotary excavation apparatus 10 from the foundation 100 pressurized from the ground is carried out by rotating the excavation equipment 10 from the foundation 100 in a state in which the foundation 100 is rotary- The speed reducer 11 can be separated, so that only the foundation 100 is press-fitted into the ground.

Then, in the main connection step S400,

The connection main body 200 is connected to the upper end of the foundation 100 constructed as described above.

At this time, as shown in FIG. 15, the connection main body 200 first covers the upper first coupling portion 150 of the base 100 using the second coupling portion 250 at the lower end thereof, The coupling between the connected base 100 and the coupling 200 is achieved by using a fixing means 300 which is a combination of the bolts 310 and the nuts 320. The bolts 310 are connected to the second coupling portions And the nut 320 is fastened to the end of the bolt 310 which penetrates and penetrates through the first engaging hole 151 of the first engaging portion 150 and the second engaging hole 251 of the first engaging portion 250. [

When the base 100 and the coupling 200 are engaged with each other by using the fixing means 300 as described above, it is preferable that the first and second coupling holes 151 and 251 are formed at least up and down It can be fixed firmly by fixing it by using a plurality of fixing means 300. [

At least two upper and lower ends of the first and second coupling holes 151 and 251 are formed in the first and second coupling holes 151 and 251 And the fixing means 300 can be constructed so that the upper and lower portions are coupled to each other in the same direction. Thus, the fixing means 300 can be firmly fixed through the plurality of fixing means 300.

7, the first and second coupling holes 151 and 251 are formed so as to intersect with each other so as to form a cross shape, and the fixing means 300 is also formed in a crossing direction So that it is possible to maintain a uniform coupling force when an external force is applied from four sides through the crossing fixing means 300. [

That is, in connecting the base 100 to the coupling 200, the coupling 200 connected to the base 100 is required to have a lower supporting force when connecting the steel pipe 1 By applying a plurality of fixing means 300 thereto, a more rigid coupling is possible.

The pedestal bolts 210 formed in a conventional steel pipe may be formed in the connecting main body 200 and the pedestal bolts 210 may be installed around the connecting main body 200 directly .

On the other hand, in the connection main construction step (S400), as shown in FIG. 16, a plurality of connection main bodies 200 can be continuously connected to the upper end of the foundation 100.

To this end, a connection main body 200 constituting a third connection portion 260 is applied to the upper end of the connection main body 200, and the connection main body 200 is connected to the first connection portion 150 of the base main body 100, The second engaging portion 250 of the second engaging main body 200 and the second engaging portion 250 of the second engaging main body 200 are coupled to each other by the engaging and fixing means 300, (300) through the third coupling part (260) of the coupling part (200).

When the plurality of connection main bodies 200 are connected to each other as described above, the first, second, and third coupling holes 151 and 251 formed in the first, second, and third coupling portions 150, 250, The first, second, and third coupling holes 151, 251, and 261 may be at least one end, One fixing means 300 is applied in the same manner as the first and second fixing holes 251 and 261. When the first, second and third fixing holes 151, 251 and 261 are formed in a plurality of stages, The fixing means 300 of multiple means can be applied in the same manner as the three coupling holes 151, 251 and 261.

That is, in the connection main construction step S400, when the connection main body 200 is connected to the upper part of the foundation main body 100, the connecting main body 200 having a relatively large diameter and a long shape is installed at one time, (200) having a relatively small diameter and a short length are connected to each other by at least one fixing means (not shown) in accordance with the diameter and length of the connecting main body 200 300) will be applied so that the construction will be possible

Thus, the construction of the sand-blasted excavation-type prefabricated steel pipe having the excavating blade and the excavating screw at the vicinity thereof is completed, and the uppermost third coupling part 260 of the connection main body 200, It is desirable to prevent the rainwater or the like from flowing in the rain.

17, when the foundation 100 is installed on the ground, as shown in FIG. 17, in the case of applying the earth-moving rotary excavation-type press-fitting type steel pipe column 1 having the excavating blade of the present invention and the excavating screw of the present invention constructed as described above, It is possible to construct the guard rail 400 of the road in place of the connection main body 200 in the installed base 100.

That is, the foundation 100 is excavated through the excavating blade 110 and the excavating screw 120, and the excavation screw 120 is rotated and excavated as it is. In this case, the foundation 100 has a plurality of And press-fitting.

Thereafter, the plurality of press-fitted bases 100 may be bolted to a conventional guard rail 400 installed outside the road.

That is, if the foundation 100 is used as a foundation for constructing the guard rail 400, it is possible to easily perform rotary excavation and press-in construction instead of the foundation caulking construction for constructing the guard rail. The construction of the foundation 100 for constructing the foundation 100 minimizes the frictional resistance between the surface of the foundation 100 and the ground so that the excavation force is increased and at the same time the rotary excavation is performed The tight coupling force between the excavation screw 120 and the ground is imparted to the excavator so that a more rigid base 100 can be press-fitted into the excavator. Thus, a strong stability of the guard rail 400 due to the robust construction can be ensured.

When the base 100 is applied to the guard rail 400 as described above, the upper first coupling portion 150 of the base 100 is closed with the finishing cap 30 so that rainwater, etc., .

As described above, according to the present invention, the sand blasted excavation-type prefabricated steel pipe having the excavating blade and the excavating screw near the excavation blade is formed in the bottom of the excavation blade, and the excavating blade is formed at the lower end of the foundation. It is possible to carry out excavation and rotary excavation indentation at the same time without additional excavation, backfilling, and so on, so that it is possible to provide more rigid, convenient construction, and shorten the air without installation of prefabricated buildings.

In addition, since the base soil applied as described above can receive the original soil bearing capacity of the ground as it is, it is possible to prevent the slope displacement phenomenon due to the tension at the time of construction of the electric cable, and the stability of the steel pipe can be further improved.

100: Fundamentals 101: Earth entrainment grooves
102, 102 ': height-adjustable ball 110:
111: excavation blade engaging portion 112: cutting edge portion
113: earth guide groove 120: excavation screw
130: Excavation screw work price 131: Tosa support groove
140: height adjusting tube 141: fixing hole
150: first coupling portion 151: first coupling hole
200: connection note 210: foot bolt
250: second coupling portion 251: second coupling hole
260: third coupling portion 261: third coupling hole
300: fixing means 310: bolt
320: Nut 400: Guard rail
S100: Foundation foundation mounting step S200: Basic foundation construction step
S300: Equipment disassembly step S400: Connection main construction step

Claims (14)

A hollow base (100) which is rotationally excavated in the ground; And
And at least one hollow connector 200 coupled to and extending from an upper portion of the base 100,
In the foundation 100,
The upper part of the foundation 100 is connected to the lower end of the foundation 100 and the lower part of the foundation is connected to the cutting edge 112 An excavating blade 110 formed between the excavating blade 110 and the inner circumferential surface of the foundation 100 to form an excavation inlet groove 101 allowing the introduction of the excavation material into the interior of the foundation 100;
A spiral drilling screw 120 formed around the lower portion and capable of direct excavation of the ground; And
(130) which is formed around the upper portion and is capable of direct excavation of the ground and has a diameter larger than the diameter of the excavation screw (120) and capable of excavating the ground and supporting the foundation (100) And,
In the excavating blade 110,
And an upper open gravel-like material induction groove 113 that extends from the lower end of the foundation 100 to the intermediate portion of the cutting edge 112 and connects the gravel-like inlet grooves 101 on both sides from the lower- And,
The excavation screw workpiece 130,
And a spiral plate protruding from the lower end to an upper portion in a sloping manner so as to form an inclined slope extending upward from the lower end to the upper end of the slope,
The base 100 includes a first coupling part 150 that can be coupled to the coupling 200 at an upper end thereof;
A second engaging part 250 having a first engaging part 150 and a second engaging part 250 at a lower end of the connecting main body 200;
A second coupling portion 250 and a third coupling portion 260 having an insertion coupling force; And
And a fixing means (300) for fixing the base (100) to the coupling shaft (200) or the coupling shaft (200) and another coupling shaft (200) Torsion rotating excavated press-in type prefabricated steel pipe with near-
The method according to claim 1,
The excavating blade (110)
Shaped block having a width equal to the outer diameter of the base 100 and a thickness smaller than the inner diameter of the base 100,
The upper portion of the base 100 forms an excavating-tooth coupling portion 111 which is inserted into and coupled to the lower end of the base 100, and the lower portion of the base 100 forms a downwardly inclined cutting edge portion 112 from both sides in the width- And a sand blasted drilling type prefabricated steel pipe with a near -
The method according to claim 1,
The excavating blade (110)
Shaped cross-shaped block having a width equal to the outer diameter of the base 100 and a thickness smaller than the inner diameter of the base 100,
The upper part of the base 100 forms an excavating-tooth coupling part 111 which is inserted into and coupled with the lower end of the base 100, and the lower part of the base 100 forms a downward- And the excavation of the excavation screw.
delete The method according to claim 1,
The excavation screw workpiece 130,
And the lower end is welded and fixed to the periphery of the foundation body (100).
The method according to claim 1,
In the foundation 100,
The horizontal height adjusting holes 102 and 102 'of the upper and lower horizontal means,
The base 100 is slidable from the base 100 and is connected to one of the height adjustment holes 102 and 102 'to fix the bolt B and the nut N Further comprising a height adjusting pipe (140) having a hole (141)
The excavation screw workpiece 130,
And the lower end is welded and fixed around the height adjusting pipe (140) so that the upper and lower sides of the base (100) can be adjusted. The excavating blade and the excavating screw Prefabricated steel pipes.
The method according to claim 1,
The first engaging portion 150 of the base 100 has a substantially U-
A first coupling hole 151 penetrating through both sides of the first coupling hole 151,
The second engaging portion 250 of the connecting main body 200 is provided with a first engaging portion 250,
And a second coupling hole (251) penetrating to both sides of the first coupling hole (151) and communicating with the first coupling hole (151)
The third engaging portion 260 of the connecting main body 200,
And a third coupling hole 261 corresponding to the second coupling hole 251 of the coupling main body 200,
The first coupling hole 151, the second coupling hole 251, and the third coupling hole 261 are constituted by at least upper and lower ends,
The fixing means (300)
When the base 100 and the coupling 200 are engaged with each other, the first coupling hole 151 and the second coupling hole 251, or the coupling hole 200 and the second coupling hole 200 when the coupling hole 200 is coupled, And a bolt (310) and a nut (320) penetrating and fastening to the third joint hole (261) and the second joint hole (251).
8. The method of claim 7,
When the first coupling hole 151 and the second coupling hole 251 penetrating to both sides are constituted by a plurality of stages,
The upper and lower portions may be configured to penetrate in the same direction,
Wherein the upper and lower portions are cross-pierced in a "cross" shape.
A method of manufacturing a slab-type steel pipe joint according to any one of claims 1 to 3 or 5 to 8,
A foundation mounting step (S100) of mounting the upper end of the foundation (100) to the rotary excavation equipment;
A basic construction step of applying a load and a rotational force to the foundation 100 to excavate the ground through the excavating blade 110, the excavating screw 120 and the excavating screw working site 130, and rotating and excavating the foundation 100 (S200);
An equipment disassembling step S300 of disassembling the rotary excavation equipment from the upper end of the press-fitted foundation 100; And
(S400) for connecting the connection main body (200) from the top of the disassembled base body (100)
The basic main construction step (S200)
And a load and a rotational force of the excavation point through the excavating blade 110 to excavate the foundation so that the foundation 100 press-fitted into the ground is auxiliary excavated through the lower excavation screw 120 at the lower part, The foundation 100 press-fitted into the ground is additionally excavated from the upper part through the excavation screw near the upper part 130 and is directly excavated to the excavation screw near the excavation screw 130,
And a compaction is performed by applying a load to the upper part of the press-fitted digging screw working site (130).
10. The method of claim 9,
The height of the digging screw 130 can be adjusted in the base 100 by using the height adjusting pipe 140,
In the basic construction step S200,
Wherein the drilling is performed in a state in which the base stock (100) is rotationally excavated and pressurized at a depth or a position in which the upper and lower positions of the excavation screw near-work site (130) are adjusted. Construction method.
10. The method of claim 9,
In the connection main construction step (S400)
One coupling shaft 200 is connected to the upper end of the foundation 100,
The first engaging portion 150 of the base 100 and the second engaging portion 250 of the connecting main body 200,
A first coupling hole 151 of the first coupling portion 150 formed at the upper end of the base 100 and a second coupling portion 250 formed at the lower end of the coupling main body 200, Is fixed by a fixing means (300) comprising a bolt (310) and a nut (320) for penetrating and fastening the second joint hole (251) of the second joint hole (251) Steel pipe main construction method.
12. The method of claim 11,
The first coupling hole 151 and the second coupling hole 251 are configured to be fixed by a plurality of rows of fixing means 300,
The first and second coupling holes 151 and 251 at the respective ends may be fixed by fixing means 300 of the same row,
The first and second coupling holes 151 and 251 at each end are formed so as to intersect with each other in a cross shape in the upper and lower directions and are fixed by the fixing means 300 of the intersecting row. Torsion rotary excavation press type prefabricated steel pipe Main construction method.
10. The method of claim 9,
In the connection main construction step (S400)
A plurality of connection springs 200 are continuously connected to the upper end of the base 100,
The first coupling part 150 of the base 100 and the second coupling part 250 of the coupling 200 are coupled by insertion and coupling of the first coupling part 150 and the second coupling part 250, 3 coupling part 260 and the second coupling part 250 formed on the coupling part 200 of the upper part,
The first engaging portion 151 of the first engaging portion 150 and the second engaging portion 250 formed at the lower end of the engaging portion 200 are formed at the upper end of the base 100 The second and third coupling holes 251 and 261 of the second coupling holes 251 and the second and third coupling portions 250 and 260 formed at the upper and lower ends of the plurality of coupling springs 200, (300) consisting of a bolt (310) and a nut (320)
The first, second and third coupling holes (151) (251) and (261) are fixed by at least one end structure and fixing means (300) Main construction method.
A method of manufacturing a slab-type steel pipe joint according to any one of claims 1 to 3 or 5 to 8,
The foundation 100 is rotated and press-fitted into the ground at the same time as excavation and excavation through the excavating blade 110, the excavating screw 120 and the excavating screw near-
A plurality of rotary excavation press-fitting of the foundation 100 at regular intervals at the edge of the road,
A method of predicting a method of constructing a prefabricated steel pipe having a sandwich rail, wherein a guard rail of the road is bolted to a plurality of press-fitted bases (100).

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