KR102596912B1 - Rotational Intrusion Filesystem - Google Patents

Abstract

The present invention relates to a rotary penetration pile system, which improves the structure to form piles by dividing them, transporting them to the site, and assembling them using a non-welding method, thereby improving on-site constructability and significantly shortening the construction period, as well as the excavation blades and center. The main structure includes the first pile (10), the second pile (20), the third pile (30), and the coupling module (100) so that underground excavation force can be effectively transmitted by the blade to improve construction efficiency. Do it as

Description

Rotational Intrusion Filesystem

The present invention relates to a rotary penetration pile system, and more specifically, the structure is improved to divide the piles, transport them to the site, and assemble them using a non-welding method, thereby improving on-site constructability and significantly shortening the construction period, and excavating blades. This relates to a rotary penetration pile system that can improve construction efficiency by effectively transmitting underground excavation force through the head and center blade.

Usually, when the upper stratum is a soft layer or has high compressibility and is unsuitable as a support layer, the foundation ground is reinforced using the type method. Here, the type method is constructed by erecting the pile vertically and then breaking the top of the pile from above to penetrate the ground.

This type of construction method has the advantage of excellent pile support due to friction with the surrounding foundation because when the pile penetrates the ground, it penetrates by pushing out the soil of the surrounding ground. However, since the pile penetrates by hitting the top of the pile, the top of the pile is damaged. It is easy to use it in urban areas, and its use in urban areas is limited due to noise and vibration when hitting.

Accordingly, in the previously disclosed patent registration No. 10-1144312, the first step of mounting a tip enlargement plate having a toothed blade on the outer peripheral surface of the tip of the first steel pipe pile in the form of a hollow tube; A second step of penetrating the steel pipe pile by rotating and pressing the first steel pipe pile into the ground and drilling the first steel pipe pile to a certain depth from the surface; A third step of excavating the middle tunnel by inserting and rotating the auger inside the first steel pipe pile; A fourth step of coupling the second steel pipe pile to the upper end of the first steel pipe pile penetrated; A fifth step of rotating and press-fitting the first and second steel pipe piles and simultaneously excavating the tip of the inside of the steel pipe with an auger to penetrate the ground to a predetermined depth; A sixth step of injecting mortar from the tip of the ground drilling portion expanded by the first and second steel pipe piles to a predetermined height; A seventh step of filling the main surfaces of the first and second steel pipe piles with grout material and curing them to form a pile structure; And a technology including an eighth step of arranging the head of the structure has been previously presented.

However, in the above method, since the semicircular disk plate is welded to the tip of the steel pipe pile body, when the semicircular disk plate rotates to achieve tip expansion construction, the weight increases and falls off from the tip of the steel pipe pile body, making tip expansion construction difficult. I followed.

In addition, in Patent No. 10-2231581, which is another prior art, a first pile made of a steel pipe, a rotating penetration pile coupling part protruding from the top of the first pile, and an excavation wing part coupled to the bottom of the first pile, A rotating penetrating pile having a pair of spiral blades coupled to the first pile at the top of the excavation wing portion; a second file having a second file body whose lower end is coupled to the upper end of the first pile, and a second file coupling portion protruding from the upper end of the second file body; And a technology including a third file having a third file body whose lower end is coupled to the upper end of the second pile body and a third file coupling portion protruding from the upper end of the third file body has been previously registered.

However, in the prior art, the coupling of the rotary penetration pile coupling to the rotary chuck is configured so that the rotary chuck and the rotary penetration pile can rotate as one body without spinning by inserting the rotary penetration pile coupling into the coupling groove formed in the rotary chuck. Because the fixation force was not strong, rotational force was not transmitted smoothly, and welding work was required to improve the fixation force of the joint, which resulted in a delay in work time in the field.

KR 10-1144312 B1 (2012.05.02.) KR 10-2231581 B1 (2021.03.18.)

Accordingly, the present invention was conceived to solve the above-mentioned problems, and the structure is improved so that the piles are divided and transported to the site and assembled using a non-welding method, thereby improving on-site constructability and significantly shortening the construction period. The purpose is to provide a rotary penetration pile system that can effectively transmit underground excavation force through the wings and center blades to improve construction efficiency.

In order to achieve this purpose, the present invention features a first pile (10) made of a steel pipe and provided with an excavation wing portion (12) at the bottom; A second pile (20) coupled to the upper end of the first pile (10) and provided to extend the length of the first pile (10); A third file (30) coupled to the upper end of the second pile (20), the upper end of which is mounted on the rotary chuck (1) of the rotary penetration equipment to transmit rotational force; and a coupling module 100 provided to couple the first and second piles 10 and 20 and the second and third piles 20 and 30.

At this time, the excavating wing parts 12 are formed in a fan shape and are arranged spaced apart in pairs at opposing positions centered on the first pile 10, and one end of the excavating wing parts 12 is located at the other end. It is formed at a lower inclination angle compared to the end, and an inclined tip (12a) is formed at the lower end of the excavating blade portion (12). When the first pile (10) is rotated, the inclined tip of the excavating blade portion (12) (12a) is characterized in that it is provided to be transported downward while excavating the ground.

In addition, a pair of center blades 14 are provided at the lower end of the first pile 10, one end of the center blades 14 is fixed inside the first pile 10, and the other end is attached to the first pile ( 10) It is formed to protrude downward, and when the first pile 10 is rotated, the ground is excavated first compared to the excavation wing portion 12 to secure an access road to the first pile 10.

In addition, the coupling module 100 includes an inner coupling portion 110 in which a first inner sleeve 112 is formed at one end to be inserted and fixed to the end of the pile, and an outer ring tooth portion 114 is formed at the other end, A second inner sleeve 122 is formed at one end to be inserted into another adjacent pile end, and an inner ring tooth 124 is formed at the other end to engage with the outer ring tooth 114. An outer coupling portion 120 and a coupling bolt 130 that penetrates the inner ring tooth 124 of the outer coupling part 120 and is screwed to the outer ring tooth 114 of the inner coupling part 110, and the inner coupling part 110. An inner guide pipe 116 protrudes from the end of the outer ring tooth 114, and an outer guide pipe protrudes from the end of the inner ring tooth 124 of the outer coupling part 120 and is provided to engage with the inner guide pipe 116. (126), and the inner guide pipe 116 is inserted into the inner peripheral surface of the outer guide pipe 216 to temporarily couple the inner coupling portion 110 and the outer coupling portion 120 to form the inner coupling portion 110 and the inner coupling portion 110. It is characterized by rotating any one of the outer coupling parts 120 to engage the outer ring teeth 114 and the inner ring teeth 124, and fastening the coupling bolt 130.

In addition, the coupling module 100 includes an inner ring portion 140 that is mounted on the end of a pile and has a plurality of inner key holes 142 radially formed on the outer peripheral surface, and an inner ring portion 140 that is mounted on another adjacent pile end. ) An outer ring portion 150 that is inserted into the outer peripheral surface and has an outer key hole 152 radially formed to correspond to the inner key hole 142, and an inner ring portion 140 that is inserted into the outer key hole 152 and the inner key hole 142. ) and a key block 160 that binds the outer ring part 150, a strip groove 154 engraved on the outer circumferential surface of the outer ring part 150 corresponding to the outer key hole 152, and a band groove 154 that surrounds the outer circumferential surface of the outer ring part 150. It includes a band 156 that is inserted into the band groove 154 and closes the entrance to the outer key hole 152 where the key block 160 is inserted, and the inner ring portion 140 and the outer ring portion 150 are assembled, After inserting the key block 160 into the outer key hole 152 and the inner key hole 142, the entrance to the outer key hole 152 is closed using a band 156 to bind neighboring files. .

In addition, the band groove 154 has guide grooves 155 formed on both sides, and the guide groove 155 is extended to the outside of the guide groove 155 by a slot groove 155a that is connected to the outer peripheral surface of the outer ring portion 150. It is open, and the band 156 is inserted into the guide groove 155 through the slot groove 155a and installed to surround the band groove 154, and a stop groove 156a is formed at the end of the band 156, One of the key blocks 160 has a stop protrusion 161 formed at its end, and when inserted into the outer key hole 152 and the inner key hole 142, a conveying force protrudes outward by the elastic body 162. It is provided to act, and the band 156 is inserted into the guide groove 155 through the slot groove 155a, and the stop groove 156a engages the stop projection 161 to fix the position. .

In addition, the coupling module 100 includes first and second fixing flanges 170 and 170', which are mounted on the end of the pile and have a plurality of female threads 172 in the pile length direction, and first and second fixing flanges 170 and 170'. A first connecting pipe body 180 disposed between the fixing flanges 170 and 170', and a first connecting pipe body 180 installed on both ends of the connecting pipe body 180 and having a fastening hole 192 formed at a position corresponding to the female thread portion 172. , 2 multi-flanges (190) (190'), and screwed through the fastening hole (192) to the female screw portion (172) to form the 1st and 2nd fixing flanges (170) (170') and the 1st and 2nd multi-flanges ( It is characterized by including a fastening bolt 194 that binds 190)(190').

In addition, the connecting pipe body 180 has an outer ring threaded portion 186 formed at one end, and an inner ring threaded portion 196 is formed on either side of the first and second multi-flanges 190 and 190' to form an outer ring threaded portion 186. ) is screwed together, is installed to surround the outer peripheral surface of the connection pipe body 180, and is provided with a cover pipe body 200 formed in a reduced length compared to the connection pipe body 180, and is directed inward at both ends of the cover pipe body 200. A conical groove 210 whose diameter decreases as it goes toward is formed, and conical protrusions 174 are formed at the ends of the first and second fixing flanges 170 and 170' corresponding to the conical groove 210, and the connection With the cover pipe body (200) inserted into the pipe body (180), the first and second multi-flanges (190) (190') are fastened to the first and second fixing flanges (170) (170') with fastening bolts (194). , When the connecting tube body 180 is rotated together with the file, the outer ring screw part 186 is screwed to the inner ring screw part 196, and the gap between the first and second multi-flanges 190 and 190' is reduced and the conical protrusion 174 is formed. ) is provided to engage the conical groove 210 and close the space between the first and second multi-flanges 190 and 190' including the fastening bolts 194.

According to the above configuration and operation, the present invention improves the structure to form piles by dividing them, transporting them to the site, and assembling them using a non-welding method, thereby improving on-site constructability and significantly shortening the construction period, and it is possible to significantly shorten the construction period on the excavation blade portion and the center blade. This has the effect of effectively transmitting underground excavation force and improving construction efficiency.

1 is an overall configuration diagram of a rotational penetration file system according to an embodiment of the present invention.
Figure 2 is a configuration diagram showing the first, second, and third files of a rotational penetration pile system according to an embodiment of the present invention.
Figure 3 is a configuration diagram showing the excavation blade portion of the rotary penetration pile system according to an embodiment of the present invention.
Figure 4 is a configuration diagram showing the coupling module of the rotational penetration pile system according to an embodiment of the present invention.
Figure 5 is a configuration diagram showing a coupling module of a rotational penetration pile system according to another embodiment of the present invention.
Figure 6 is a configuration diagram showing the assembled cross section of Figure 5.
Figure 7 is a configuration diagram showing the band fixing structure of Figure 5.
Figure 8 is a configuration diagram showing a coupling module of a rotational penetration pile system according to another embodiment of the present invention.
Figure 9 is a configuration diagram showing the cover pipe assembly structure for finishing the outer peripheral surface of the coupling module of Figure 8.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Also, in describing the present invention, if it is determined that related known functions may unnecessarily obscure the gist of the present invention as they are obvious to those skilled in the art, the detailed description thereof will be omitted.

Figure 1 is a configuration diagram showing the overall rotational penetration file system according to an embodiment of the present invention, and Figure 2 is a configuration diagram showing the first, second, and third files of the rotational penetration file system according to an embodiment of the present invention. , Figure 3 is a configuration diagram showing the excavation wing portion of the rotational penetration pile system according to an embodiment of the present invention, and Figure 4 is a configuration diagram showing the coupling module of the rotational penetration pile system according to an embodiment of the present invention. Figure 5 is a configuration diagram showing a coupling module of a rotational penetration pile system according to another embodiment of the present invention, Figure 6 is a configuration diagram showing an assembled cross section of Figure 5, and Figure 7 is a diagram showing the band fixing structure of Figure 5. It is a configuration diagram, and Figure 8 is a configuration diagram showing a coupling module of a rotary penetration pile system according to another embodiment of the present invention, and Figure 9 is a configuration showing a cover tube assembly structure that finishes the outer peripheral surface of the coupling module of Figure 8. It's a degree.

The present invention relates to a rotary penetration pile system, which improves the structure to form piles by dividing them, transporting them to the site, and assembling them using a non-welding method, thereby improving on-site constructability and significantly shortening the construction period, as well as the excavation blades and center. The main structure includes the first pile (10), the second pile (20), the third pile (30), and the coupling module (100) so that underground excavation force can be effectively transmitted by the blade to improve construction efficiency. Do it as

The first pile 10 according to the present invention is made of a steel pipe and is provided with an excavation wing portion 12 at the bottom, and the second pile 20 is coupled to the upper end of the first pile 10, forming the first pile 10. It is provided to extend the length of the pile 10, and the third pile 30 is coupled to the upper end of the second pile 20, and the upper end is mounted on the rotary chuck 1 of the rotary penetration equipment to transmit rotational force. do.

The first, second, and third piles 10, 20, and 30 are formed to a preset length in consideration of transportability and handling, and are usually formed within 10 meters.

For example, if the length of the first, second, and third piles (10) (20) (30) is each 6 meters, and the design penetration depth is 18 meters or less, the first, second, and third piles (10) (20) ) (30) is prepared one each, and if the design penetration depth is 18 meters or more, one each of the first and third piles (10) and (30) is prepared, and the second pile (20) is connected in two or more pieces. It is equipped to respond to the design penetration depth.

At this time, the excavation blades 12 are formed in a fan shape and are spaced apart in pairs at opposing positions with the first pile 10 as the center.

One end of the excavating wing portion 12 is formed at a lower inclination angle than the other end, and an inclined tip 12a is formed at the lower end of the excavating blade portion 12.

Accordingly, when the first pile 10 is rotated, the inclined tip 12a of the excavation wing 12 is provided to be transported downward while excavating the ground.

Additionally, a pair of center blade portions 14 are provided at the lower end of the first pile 10.

One end of the center blade portion 14 is fixed inside the first pile 10, the other end protrudes downward from the first pile 10, and an inclined blade portion is formed at the lower end.

That is, the center blade portion 14 protrudes from the lower part of the first pile 10, and the pressure received from the ground is reduced by pre-excavating the ground when the first pile 10 rotates and penetrates.

In this way, when the first pile 10 is rotated, the ground is excavated before the excavation wing portion 12 to secure an access road to the first pile 10.

In addition, the coupling module 100 according to the present invention is provided to couple the first and second piles 10 and 20 and the second and third piles 20 and 30, where the coupling module 100 ) For specific embodiments, refer to FIGS. 4 to 9 described later.

In FIG. 4, the coupling module 100 is an inner coupling portion 110 in which a first inner sleeve 112 is formed at one end to be inserted and fixed into the end of the pile, and an outer ring tooth portion 114 is formed at the other end. and an outer coupling portion ( 120, and a coupling bolt 130 that penetrates the inner ring tooth portion 124 of the outer coupling portion 120 and is screwed to the outer ring tooth portion 114 of the inner coupling portion 110, and the inner coupling portion 110. ), the inner guide pipe 116 protrudes from the end of the outer ring tooth 114, and the outer protrudes from the end of the inner ring tooth 124 of the outer coupling part 120 and is provided to engage with the inner guide pipe 116. Includes a guide tube (126).

Then, the inner guide pipe 116 is inserted into the inner peripheral surface of the outer guide pipe 216 to temporarily couple the inner coupling portion 110 and the outer coupling portion 120 to form the inner coupling portion 110 and the outer coupling portion 120. ) is rotated to engage the outer ring teeth 114 and the inner ring teeth 124, and is equipped to fasten the coupling bolt 130, thereby improving workability for on-site assembly without welding. In addition, there is an advantage that the bond between files is maintained firmly.

In FIGS. 5 and 6, the coupling module 100 is mounted on the end of a pile, has an inner ring portion 140 in which a plurality of inner key holes 142 are formed radially on the outer peripheral surface, and is mounted on another adjacent pile end. It is inserted into the outer peripheral surface of the inner ring portion 140, and is inserted into the outer ring portion 150 in which the outer key hole 152 is formed radially to correspond to the inner key hole 142, and the outer key hole 152 and the inner key hole 142. , a key block 160 that binds the inner ring portion 140 and the outer ring portion 150, a band groove 154 engraved on the outer peripheral surface of the outer ring portion 150 corresponding to the outer key hole 152, and an outer ring portion 150. ) It includes a band 156 that is inserted into the band groove 154 to surround the outer peripheral surface and closes the entrance to the outer key hole 152 where the key block 160 is inserted.

Looking at the assembled state, the inner ring part 140 and the outer ring part 150 are assembled, the key block 160 is inserted into the outer key hole 152 and the inner key hole 142, and then the band 156 is used to It is provided to close the entrance to the outer key hole (152) and bind neighboring piles.

In this way, the inner ring portion 140 and the outer ring portion 150 are simply bound by the key block 160 inserted into the outer key hole 152 and the inner key hole 142, and the key block 160 is connected to the band 156. It has the advantage of excellent on-site assembly as it is restrained in a non-welding manner.

In FIG. 7, the band groove 154 has guide grooves 155 formed on both sides, and the guide groove 155 is formed by a slot groove 155a connected to the outer peripheral surface of the outer ring portion 150. It is open to the outside, and the band 156 is inserted into the guide groove 155 through the slot groove 155a and is installed to surround the band groove 154.

At this time, a stop groove 156a is formed at the end of the band 156, a stop protrusion 161 is formed at the end of one of the key blocks 160, and an outer key hole 152 and an inner key hole 142 are formed. It is provided so that a protruding transfer force is applied in the outward direction by the elastic body 162 in the inserted state.

In addition, the band 156 is inserted into the guide groove 155 through the slot groove 155a, and the stop groove 156a is provided to engage and fix the position of the stop projection 161, so that the band 156 is fixed. This has the advantage of simplification.

In FIG. 8, the coupling module 100 includes first and second fixing flanges 170 and 170' mounted on the end of the pile and having a plurality of female threads 172 in the pile length direction, and the first and second fixing flanges 170 and 170'. , 2 A connecting pipe body 180 disposed between the fixing flanges 170 and 170', installed on both ends of the connecting pipe body 180, and a fastening hole 192 formed at a position corresponding to the female thread portion 172. The first and second multi-flanges (190) (190') and the first and second multi-flanges (170) (170') are screwed through the fastening hole (192) and screwed to the female screw portion (172). Includes fastening bolts 194 that fasten the flanges 190 and 190'.

In addition, the overall length of the pile can be adjusted in the field depending on the length of the connecting pipe 180.

In Figure 9, the connecting pipe body 180 has an outer ring threaded portion 186 formed at one end, and an inner ring threaded portion 196 is formed on either side of the first and second multi-flanges 190 and 190' to form an outer ring threaded portion. A cover pipe body (200) is screwed together with (186), installed to surround the outer peripheral surface of the connecting pipe body (180), and formed in a reduced length compared to the connecting pipe body (180).

In addition, conical grooves 210 whose diameter decreases toward the inside are formed at both ends of the cover pipe body 200, and the ends of the first and second fixing flanges 170 and 170' corresponding to the conical grooves 210. A conical protrusion 174 is formed.

Looking at the use state, the first and second multi-flanges (190) (190') are fastened to the first and second fixing flanges (170) (170') with the cover pipe body (200) inserted into the connecting pipe body (180). When it is fastened with the bolt 194 and the connecting pipe 180 is rotated together with the file, the outer ring threaded portion 186 is screwed to the inner ring threaded portion 196 to close the gap between the first and second multi-flanges 190 and 190'. As this is reduced, the conical protrusion 174 engages with the conical groove 210 and is provided to close the space between the first and second multi-flanges 190 and 190' including the fastening bolt 194, so that the connection pipe 180 , Since the coupling module 100 including the fastening bolt 194 is not exposed to the outside by the cover pipe body 200, friction resistance is reduced when the pile is excavated into the ground, thereby improving construction efficiency.

As described above, the most preferred embodiments of the present invention have been described in the detailed description of the present invention, but various modifications may be made without departing from the technical scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the above embodiments, but should be recognized to the technologies in the patent claims described later and to equivalent technical means from these technologies.

10: 1st file 20: 2nd file
30: Third file 100: Coupling module

Claims (8)

A first pile (10) made of a steel pipe and provided with excavation wings (12) at the bottom; A second pile (20) coupled to the upper end of the first pile (10) and provided to extend the length of the first pile (10); A third file (30) coupled to the upper end of the second pile (20), the upper end of which is mounted on the rotary chuck (1) of the rotary penetration equipment to transmit rotational force; And a coupling module 100 provided to couple the first and second piles 10 and 20 and the second and third piles 20 and 30,
The coupling module 100 includes an inner coupling portion 110 in which a first inner sleeve 112 is formed at one end to be inserted and fixed to the end of the pile, and an outer ring tooth 114 is formed at the other end, and an adjacent An outer coupling portion 120 in which a second inner sleeve 122 is formed at one end to be inserted into the other pile end, and an inner ring tooth 124 is formed at the other end to engage with the outer ring tooth 114; A coupling bolt 130 that penetrates the inner ring tooth 124 of the outer coupling part 120 and is screwed to the outer ring tooth 114 of the inner coupling part 110, and the outer ring tooth of the inner coupling part 110. An inner guide tube 116 protruding from the end of the shape part 114, and an outer guide tube 126 protruding from the end of the inner ring tooth part 124 of the outer coupling part 120 and provided to engage with the inner guide tube 116. ), and inserting the inner guide pipe 116 into the inner peripheral surface of the outer guide pipe 216 to temporarily couple the inner coupling portion 110 and the outer coupling portion 120 to the inner coupling portion 110 and the outer coupling portion. A rotary penetration pile system characterized in that it is provided to rotate any one of the ring parts 120 to engage the outer ring teeth 114 and the inner ring teeth 124, and to fasten the coupling bolt 130.
According to clause 1,
The excavation wing portions 12 are formed in a fan shape and are spaced apart in pairs at opposing positions centered on the first pile 10,
The excavation wing portion 12 is formed with one end at a lower inclination angle than the other end,
An inclined tip (12a) is formed at the lower end of the excavating wing portion (12),
When the first pile (10) is rotated, the inclined tip (12a) of the excavating wing portion (12) is provided to be transported downward while excavating the ground.
According to claim 1 or 2,
A pair of center blades 14 are provided at the lower end of the first pile 10,
One end of the center blade portion 14 is fixed inside the first pile 10, and the other end protrudes downward from the first pile 10,
When the first pile (10) is rotated, the rotational penetration pile system is provided to secure an access road to the first pile (10) by excavating the ground first compared to the excavation wing portion (12).
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