KR102547059B1 - Seismic foundation pile and method of manufacturing the same - Google Patents

Abstract

An earthquake-resistant foundation pile according to the present invention is an earthquake-resistant foundation pile installed in the ground to support a building structure on the ground, and includes a pipe unit provided as a hollow pipe, rotated along a central axis and buried in the ground; and an entry unit that is connected to the pipe unit and drills into the ground according to rotation of the pipe unit so that the pipe unit can be embedded into the ground through the ground.

Description

Seismic foundation pile and method of manufacturing the same {SEISMIC FOUNDATION PILE AND METHOD OF MANUFACTURING THE SAME}

The present invention relates to an earthquake-resistant foundation pile and a method for manufacturing the same, and more particularly, to an entry that is connected to a pipe unit so that the pipe unit can be buried in the ground through the ground and drills the ground according to the rotation of the pipe unit. It relates to an earthquake-resistant foundation pile that can reduce work time and cost and improve stability while the pipe unit itself is buried through the unit, and a method for manufacturing the same.

An earthquake is a phenomenon in which energy from inside the earth comes out to the surface and the ground cracks and shakes.

Recently, due to frequent earthquakes, interest in securing the safety of structures in response to earthquakes is rapidly increasing in all countries. Earthquakes are more terrifying than other natural disasters, such as typhoons and floods, because they are difficult to predict, the affected areas are very large, and even small-scale earthquakes cause great psychological anxiety to local residents. Therefore, it is urgently needed to develop civil engineering/construction technology to reduce loss of buildings and bridges caused by land subsidence and cracking during an earthquake.

Building a building firmly is the basic of basics, but in the case of earthquake-resistant design, it is different from general design because it is more important to build a building so that it does not fall over than to build it firmly.

Seismic design is applied to all buildings built in modern times, and in Korea, earthquakes are relatively low, and in order to reduce costs, it has not been strictly applied.

For example, many efforts have been made to protect buildings from earthquake damage as much as possible through a method of driving various types of piles into the floor of a building as a method widely used as a method for seismic design of buildings.

Specifically, in order to deeply bury the steel pipe used as the foundation pile in the pile foundation work as described above, in Japan, after burying a 6m long steel pipe into the ground, leave about 1m from the ground and Another 6m long steel pipe is welded and buried.

However, for the burial of the above-mentioned foundation pile, a process of drilling a hole in the ground is generally necessary, and a process of pouring and hardening cement is essential after the process of burying a steel pipe.

In the process as described above, it is difficult to work in a deep space due to the work structure, it is not easy to harden it firmly, it is not easy to make a reinforcing bar bundle strong, it is difficult to pour cement evenly, and it takes time to harden and harden the placed cement. The problem is that it takes a lot.

The present invention is intended to solve the above problems, and an object of the present invention is to omit the process of pouring and hardening cement by simultaneously performing the process of drilling the ground and the process of embedding foundation piles.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

In order to solve the above problems, an earthquake-resistant foundation pile according to one embodiment of the present invention is an earthquake-resistant foundation pile installed in the ground to support a building structure on the ground, is provided as a hollow pipe, and is rotated along a central axis to A pipe unit buried in; and an entry unit that is connected to the pipe unit and drills into the ground according to rotation of the pipe unit so that the pipe unit can be embedded into the ground through the ground.

The entry unit includes a perforation unit connected to a lower end of the pipe unit and perforating the ground; It may include a wing that is disposed on one side of the perforation and discharges soil generated by the perforation in a direction different from the entry direction of the perforation.

The perforation part may have an upper end connected to a lower part of the pipe unit and a tip end formed at the lower end so as to have the same longitudinal direction and concentricity as the pipe unit.

The perforation part has an outer circumferential surface provided in a conical shape with an upper and lower narrow, and protruding members formed long in a downward direction from an upper part of the outer circumferential surface may be arranged spaced apart from each other at predetermined intervals along the outer circumferential surface.

Here, the wing portion may be coupled to the outer circumferential surface of the pipe unit in the form of a screw.

In addition, unit blades protruding from an outer circumferential surface of the pipe unit may be formed in an oblique direction in a longitudinal direction of the pipe unit corresponding to a rotational direction of the pipe unit.

The unit blade may have a V-shaped wing discharge groove for discharging soil and an auxiliary protrusion to assist in discharging soil.

The auxiliary protrusions are disposed on first and second surfaces facing each other in the wing discharge groove, and may be alternately arranged on the first and second surfaces along the longitudinal direction of the discharge groove.

Meanwhile, the wing portion may be connected to an upper end of the perforation portion.

In order to solve the above problems, a method for manufacturing an earthquake-resistant foundation pile according to one embodiment of the present invention includes a pile fixing step of supporting and fixing a pipe unit so that it is horizontal to the ground; A mounting step of locating the wing of the entry unit at a predetermined position on the outer circumferential surface of the pipe unit; and a welding step of fixing the wing portion to an outer circumferential surface of the pipe unit.

The earthquake-resistant foundation pile and method for manufacturing the same of the present invention for solving the above problems do not require a separate ground drilling screw process, and the pile to be buried directly penetrates the ground to the target point and hardens on the spot, It is possible to shorten the working time and reduce the number of people required for the work, thereby improving work productivity and reducing the cost required for the work.

In addition, since only a narrower working space is required than the working space required for the above-described conventional working process, there is an effect that space restrictions are improved.

In addition, since it can be continuously and firmly coupled to the ground in the vertical direction, it is possible to bury foundation piles deeply from the ground, thereby minimizing shaking in the event of an earthquake and improving safety.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

The above summary, as well as the detailed description of the preferred embodiments of the present application set forth below, will be better understood when read in conjunction with the accompanying drawings. Preferred embodiments are shown in the drawings for the purpose of illustrating the present invention. However, it should be understood that this application is not limited to the precise arrangements and instrumentalities shown.
1 is a view for explaining how an earthquake-resistant foundation pile according to an embodiment of the present invention is buried in the ground by a landfill device;
Figure 2 is a view for explaining the overall appearance of the foundation pile for earthquake resistance according to an embodiment of the present invention;
3 is a view for explaining a pipe unit and an entry unit of an earthquake-resistant foundation pile according to an embodiment of the present invention;
Figure 4 is a view for explaining a modified example of the perforation of the earthquake-resistant foundation pile according to an embodiment of the present invention;
Figure 5 is a view for explaining another modified example of the perforation of the earthquake-resistant foundation pile according to an embodiment of the present invention;
Figure 6 is a view for explaining the shape of the wings of the entry unit of the earthquake-resistant foundation pile according to an embodiment of the present invention;
7 is a view for explaining a modified example of an entry unit of an earthquake-resistant foundation pile according to an embodiment of the present invention;
8 is a view for explaining a connection unit of an earthquake-resistant foundation file according to an embodiment of the present invention;
9 is a view for explaining a foundation file for earthquake resistance according to another embodiment of the present invention;
10 is a view for explaining a foundation file for earthquake resistance according to another embodiment of the present invention;
11 is a view for explaining a method for manufacturing an earthquake-resistant foundation pile according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention in which the object of the present invention can be realized in detail will be described with reference to the accompanying drawings. In describing the present embodiment, the same name and the same reference numeral are used for the same configuration, and additional description thereof will be omitted.

1 is a view for explaining how an earthquake-resistant foundation pile according to an embodiment of the present invention is buried in the ground by a landfill device, and FIG. 2 is an overall view of an earthquake-resistant foundation pile according to an embodiment of the present invention. 3 is a view for explaining a pipe unit and an entry unit of an earthquake-resistant foundation pile according to an embodiment of the present invention. 4 is a view for explaining a modified example of a perforation of an earthquake-resistant foundation pile according to an embodiment of the present invention, and FIG. 5 is another modification of a perforation of an earthquake-resistant foundation pile according to an embodiment of the present invention. It is a view for explaining an example, and FIG. 6 is a view for explaining the shape of the wings of an entry unit of an earthquake-resistant foundation file according to an embodiment of the present invention, and FIG. 7 is a view for earthquake-proof according to an embodiment of the present invention. It is a view for explaining a modified example of an entry unit of a foundation pile, and FIG. 8 is a view for explaining a connection unit of an earthquake-resistant foundation pile according to an embodiment of the present invention.

As shown in FIGS. 1 and 2 , the earthquake-resistant foundation pile 10 according to an embodiment of the present invention may largely include a pipe unit 100 and an entry unit 200.

As shown in FIG. 1, the earthquake-resistant foundation pile 10 of the present invention may be installed in the ground through a landfill device 1 to support a building structure on the ground.

Here, the embedding device 1 fixes the earthquake-resistant foundation pile 10 of the present invention and rotates the foundation pile to drill the ground G and at the same time embed it in the ground, the shape and configuration can be varied. It can be, so it will be taken for granted that the scope of the present invention is not limited.

First, as shown in FIG. 2, the pipe unit 100 is fixed to the landfill device 1 and then rotated to be buried in the ground, and by supporting the lower part of the building structure, the construction It can play a role in reducing collapse and loss of structures such as bridges.

That is, the pipe unit 100 is buried in the ground and firmly supports the above-mentioned building and the lower part of the building structure including the above-mentioned structure, thereby reducing damage caused by an earthquake and ensuring safety.

At this time, the pipe unit 100 may be provided as a hollow tube, and after fixing its upper end to the landfill device 1 on the ground, it may be rotated along the central axis of the pipe unit 100 to be buried in the ground.

In addition, the pipe unit 100 is buried in the ground so that its upper end is exposed at a predetermined height from the ground by an embedding device, and then connected to another pipe unit 100 through a facility such as an orbital welding device. The pipe unit 100 to be buried in the ground ), the length of which can be adjusted.

For example, the pipe unit 100 may be provided with a steel pipe so that it can be firmly connected to each other, and is formed in a length of 6m, leaving about 1m from the ground and embedding only 5m in the ground, and another 6m length on top of it. of steel pipes can be welded.

As described above, as the pipe unit 100 is buried at a depth of 10 m or more in the ground G, the seismic design effect can be improved to protect the building structures from earthquake damage.

The entry unit 200 is connected to the pipe unit 100 to be in contact with the ground (G) so that the above-described pipe unit 100 can be buried in the ground through the ground (G), and the rotation of the pipe unit 100 Depending on the ground (G) can be drilled in the direction perpendicular to the ground.

The configuration of the entry unit 200 will be described in detail with reference to FIG. 3 as follows.

Specifically, the entry unit 200 may include a perforation part 220 and a wing part 240.

First, the perforation unit 220 may be connected to the lower end of the above-described pipe unit 100 to perforate the ground (G).

Specifically, the upper end of the perforation 220 is connected to the lower part of the pipe unit 100 so as to have the same longitudinal direction and concentricity as the pipe unit 100, and a tip end 220c may be formed at the lower end.

For example, as shown in FIG. 3 , the perforation unit 220 may have an outer circumferential surface formed in a conical shape with upper and lower sides.

In other words, the perforation 220 may have an inverted triangle shape, one side of which is connected to the lower end of the pipe unit 100 when viewed in a cross-sectional side view based on a virtual plane formed by the central axis and the ground.

At this time, the drilling process of the ground (G) can be made more smooth by forming a space for discharging the soil generated by the entry of the drilling unit 220 in a different direction from the entry of the drilling unit 220, and the Depending on the shape or strength, it may be transformed into a shape different from that shown in FIG. 3, and variations will be described later with reference to FIGS. 4, 5, 9 and 10.

For example, as shown in FIG. 4, the perforation part 220 is formed with steps at predetermined intervals from the top connected to the bottom of the pipe unit 100 to the tip 220c located at the bottom, thereby securing a discharge space. can

Specifically, the perforation part 220 may include a body 220a, a discharge groove 220b, and a tip 220c, wherein the body 220a is the lower end of the pipe unit 100 and the lowermost tip. A plurality of cylinders whose diameters gradually decrease between (220c) may be provided in a form connected to each other.

Therefore, a step may be formed due to a difference in diameter of adjacent cylinders, and a discharge groove 220b may be formed due to the formed step.

That is, through the discharge groove 220b formed by the side surface of the plurality of cylinders and the lower surface of the other cylinder vertically in contact with the side surface, soil may be discharged in an oblique direction of the rotation axis based on the tip part 220c.

In a different form as described above, as shown in FIG. 5, when the strength of the ground G is strong, the perforation part 220 may include a body 220a connected with a concentric axis at the lower end of the pipe unit 100. On the outer circumferential surface of the body 220a, discharge grooves 220b having a length in a direction perpendicular to the ground and recessed toward the center of the body 220a may be arranged at a predetermined interval.

In this case, the tip portion 220c is not provided with a pointed end, but may be formed on the lower surface of the body 220a in a hemispherical shape as shown in the drawing.

Therefore, the cutting edge 220c provided in the form of a hemisphere is made of a material having a stronger strength than the strength of the ground G to be drilled, so that the ground G having strong strength can be evenly ground and drilled.

As shown in FIG. 6, the wing unit 240 may be disposed on one side of the perforation unit 220 to discharge soil generated by the perforation unit 220 in a direction different from the entry direction of the perforation unit 220. there is.

Specifically, the wings 240 may be coupled to the outer circumferential surface of the pipe unit 100 in the form of a screw, and the wing width W1 of the wing 240 and the gap W2 between the wings are adjusted to form a ground (G) Correspondingly, the discharge space can be adjusted.

In addition, when the earthquake-resistant foundation pile 10 of the present invention is completely buried in the ground, the contact surface with the ground can be taken wider by the wing portion 240 described above, and accordingly, the earthquake-resistant foundation pile of the present invention ( 10) can be stably fixed.

In addition, the wing portion 240 may be connected to the upper end of the above-described perforated portion 220.

For example, as shown in FIG. 7 , the perforation part 220 may be provided in the form of a cylinder with upper and lower narrow edges as described above, and the tip part 220c is formed at the top of the perforation part 220 in a downward direction. A wing portion 240 of the form may be formed.

The earthquake-resistant foundation pile 10 according to an embodiment of the present invention having the configuration described above may further include a connection unit 300.

Specifically, the connection unit 300 is provided on the upper outer circumferential surface of the pipe unit 100 so that the pipe unit 100 is firmly fixed to the above-described landfill device 1 and can be rotated about the central axis of the pipe unit 100. It can be.

For example, the connection unit 300 may be provided in the form of a coupling groove formed in the direction of the central axis on the outer circumferential surface of the upper side of the pipe unit 100 .

Due to this, the embedding device 1 can firmly fix the pipe unit 100 through a clamp having a coupler having a shape corresponding to the coupling groove.

Also, the connection unit 300 may include a connection member 320 as shown in FIG. 8 .

As described above, when the pipe unit 100 is vertically welded with equipment such as an orbital welding machine in order to adjust the length buried in the ground, the connecting member 320 is a pipe located at the lower part with respect to the welding line WD. It may be connected to the connection unit 300 of the unit 100 and the connection unit 300 of the pipe unit 100 located at the top.

Therefore, the connection unit 300 can further strengthen the coupling force of the pipe units 100 connected to each other.

9 is a view for explaining an earthquake-resistant foundation file 10 according to another embodiment of the present invention.

As shown in the drawing, the earthquake-resistant foundation pile 20 according to another embodiment of the present invention may largely include a pipe unit 100 and an entry unit 200, and may further include a connection unit 300. may be

Here, since the pipe unit 100 and the connection unit 300 are identical and similar to the pipe unit 100 according to an embodiment of the present invention, descriptions thereof will be omitted and only other parts will be described.

The entry unit 200 includes a perforation part 220 and a wing part 240, and the perforation part 220 may be connected to the lower end of the pipe unit 100 described above to perforate the ground (G).

In addition, as described above in one embodiment, the perforation part 220 has the same longitudinal direction and concentricity as the pipe unit 100, and the upper end is connected to the lower part of the pipe unit 100, and the lower end has the tip end 220c. ) can be formed.

That is, as shown in FIG. 3 , the perforation unit 220 may have an outer circumferential surface provided in a conical shape with an upper and lower width.

The wing unit 240 may include a unit wing.

The unit blades protrude from the outer circumferential surface of the pipe unit 100, and are formed in an oblique direction with respect to the central axis of the pipe unit 100 so as to correspond to the rotational direction of the pipe unit 100 on the outer circumferential surface of the pipe unit 100. can

In other words, since the unit blades are formed in an oblique direction with respect to the longitudinal direction of the pipe unit 100, the above-mentioned soil discharge area in the oblique direction is formed between the unit blades, and thus the soil generated by the perforation part 220. It is possible to discharge in a direction different from the entry direction of the perforation 220.

10 is a view for explaining an earthquake-resistant foundation file 10 according to another embodiment of the present invention.

As shown in FIG. 10, the earthquake-resistant foundation pile 30 according to another embodiment of the present invention may largely include a pipe unit 100 and an entry unit 200, and further includes a connection unit 300. may also include

Here, since the pipe unit 100 and the connection unit 300 are identical and similar to the pipe unit 100 according to an embodiment of the present invention, descriptions thereof will be omitted and only other parts will be described.

The entry unit 200 includes a perforation part 220 and a wing part 240, and the perforation part 220 may be connected to the lower end of the pipe unit 100 described above to perforate the ground (G).

In addition, as described above in one embodiment, the perforation part 220 has the same longitudinal direction and concentricity as the pipe unit 100, and the upper end is connected to the lower part of the pipe unit 100, and the lower end has the tip end 220c. ) can be formed.

That is, the perforation unit 220 may have an outer circumferential surface provided in a conical shape with upper and lower narrows, as shown in FIG. 3 described above.

At this time, as shown in FIG. 10, in the perforation 220, the protruding member 280 formed long in the downward direction from the top of the outer circumferential surface is arranged spaced apart at a predetermined interval along the outer circumferential surface, so that the soil discharge space can be secured.

Also, in the protruding member 280, protruding pieces 280a protruding in the vertical direction of the longitudinal direction may be regularly arranged along the longitudinal direction.

That is, the protruding member 280 has a protruding piece 280a such as a gear tooth arranged on at least one surface, thereby expanding the contact area of the perforation 220 with respect to the ground G or the ground, and as a result, the perforation 220 is formed on the ground. (G) can play a role in enabling smooth perforation.

The wing unit 240 may include unit blades, and the unit blades protruding from the outer circumferential surface of the pipe unit 100 are oblique to the longitudinal direction of the pipe unit 100 in correspondence with the rotational direction of the pipe unit 100. can be formed as

Here, the unit blade may have a wing discharge groove 240a formed, and the wing discharge groove 240a may be provided in a v-shape to smoothly discharge soil.

In addition, the unit blades may have auxiliary protrusions 240b and 240c formed to assist discharge of soil, and the auxiliary protrusions 240b and 240c face each other in the wing discharge groove 240a, as shown in FIG. The view may be disposed on the first and second surfaces, respectively.

At this time, the auxiliary protrusions 240b and 240c may be alternately arranged on the first and second surfaces along the longitudinal direction of the wing discharge groove 240a.

Referring again to the cross-sectional view of the unit blades cut perpendicular to the longitudinal direction, the unit blades are asymmetrical to each other with respect to the central edge of the wing discharge groove 240a where the first and second surfaces meet. can be provided.

11 is a view for explaining a method for manufacturing an earthquake-resistant foundation pile according to an embodiment of the present invention.

As shown in FIG. 11, the method for manufacturing an earthquake-resistant foundation pile according to an embodiment of the present invention largely includes a file fixing step (S1). A mounting step (S2) and a welding step (S3) may be included.

A method for manufacturing an earthquake-resistant foundation pile according to an embodiment of the present invention relates to a method for automatically welding the above-described wings to a pipe unit through an automatic welding device, and automatically welds a desired welding portion while automatically rotating the pipe unit. productivity can be improved.

First, in the fixing step, the pipe unit may be supported and fixed horizontally to the ground by a support device having a horizontal support roller so that the pipe unit is supported sufficiently horizontally when it rotates (S1).

At this time, the clamp fixing the pipe unit in the support device can firmly clamp or release the pipe in response to an operator's command so that welding work, which will be described later, can proceed safely.

In addition, the clamp may be provided to rotate forward or backward with respect to the central axis of the pipe unit.

Next, in the mounting step, the wing of the entry unit may be positioned at a predetermined position on the outer circumferential surface of the pipe unit fixed by the clamp in the support device (S2).

At this time, the mounting step may include a process of aligning the central axis of the screw-shaped wing and the central axis of the pipe unit.

Finally, in the welding step, the wings are fixed to the outer circumferential surface of the pipe unit (S3). At this time, the welding device is coupled to the multi-joint robot in response to the welding line including the curvature to provide a welding torch that is easy to adjust the angle. there is.

In addition, the welding device in the welding step can be provided so that it can be moved forward and backward in the longitudinal direction of the pipe unit supported by the support device, so that welding corresponding to the _length of various wing parts is possible. can

Therefore, the earthquake-resistant foundation pile and method for manufacturing the same of the present invention shortens the working time by directly entering the ground to be buried without the need for a screw process to drill the ground and directly entering the ground to the target point and hardening on the spot, It is possible to reduce the number of people required for work, thereby improving work productivity and reducing the cost required for work.

In addition, since only a narrower working space is required than the working space required for the conventional working process described above, space restrictions can be improved, and since it can be continuously and firmly coupled to the ground in the vertical direction, foundation piles can be buried deeply from the ground. As a result, when an earthquake occurs, shaking can be minimized and safety can be improved.

As described above, the preferred embodiments according to the present invention have been reviewed, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope is a matter of ordinary skill in the art. It is self-evident to them. Therefore, the embodiments described above are to be regarded as illustrative rather than restrictive, and thus the present invention is not limited to the above description, but may vary within the scope of the appended claims and their equivalents.

1: landfill device
G: ground
10: Foundation pile for earthquake resistance
100: pipe unit
200: entry unit
220: perforation
240: wing part
300: connection unit

Claims (10)

As an earthquake-resistant foundation pile installed in the ground to support a building structure on the ground,
A pipe unit provided as a hollow pipe, rotated along a central axis and buried in the ground; and
Including an entry unit connected to the pipe unit and drilling the ground according to the rotation of the pipe unit so that the pipe unit can be buried into the ground through the ground,
The entry unit is
A perforation part connected to the lower end of the pipe unit to perforate the ground and a wing part disposed on one side of the perforation part and discharging soil generated by the perforation part in a direction different from the entry direction of the perforation part,
The wing part,
Unit blades protruding from the outer circumferential surface of the pipe unit are formed in an oblique direction in the longitudinal direction of the pipe unit corresponding to the rotational direction of the pipe unit,
The unit wing,
Characterized in that a V-shaped wing discharge groove is formed for discharging soil and an auxiliary protrusion is formed to assist in discharging soil.
Seismic basic file.
delete According to claim 1,
The perforation,
Characterized in that the upper end is connected to the lower part of the pipe unit so as to have the same longitudinal direction and concentricity as the pipe unit, and a tip is formed at the lower end.
Seismic basic file.
According to claim 3,
The perforation,
Characterized in that the outer circumferential surface is provided in the form of a conical upper and lower rim, and protruding members formed long from the upper part of the outer circumferential surface downward are arranged spaced apart at predetermined intervals along the outer circumferential surface,
Seismic basic file.
delete delete delete According to claim 1,
The auxiliary protrusion,
Disposed on the first and second surfaces facing each other in the wing discharge groove, characterized in that arranged alternately on the first and second surfaces along the longitudinal direction of the wing discharge groove,
Seismic basic file.
delete A pile fixing step of supporting and fixing the pipe unit so that it is horizontal to the ground;
A mounting step of locating the wing of the entry unit at a predetermined position on the outer circumferential surface of the pipe unit; and
A welding step of fixing the wing to the outer circumferential surface of the pipe unit,
The entry unit is
A perforation part connected to the lower end of the pipe unit to perforate the ground and a wing part disposed on one side of the perforation part and discharging soil generated by the perforation part in a direction different from the entry direction of the perforation part,
The wing part,
Unit blades protruding from the outer circumferential surface of the pipe unit are formed in an oblique direction in the longitudinal direction of the pipe unit corresponding to the rotational direction of the pipe unit,
The unit wing,
Characterized in that a V-shaped wing discharge groove is formed for discharging soil and an auxiliary protrusion is formed to assist in discharging soil.
A method for manufacturing foundation piles for earthquake resistance.

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