JP2011252301A - Pile and penetration apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pile rotatively penetrable without being stressed on its main body and joint part due to distortion and a penetration apparatus.SOLUTION: A pile has an inner space for inserting a rod therein, and its base end side exposed from the ground can be jointed with a pile having the same cross-sectional shape. The rod can be fitted to the pile at an optional depth inside the inner space of the pile. A penetration apparatus is mounted with the rod and fits the pile to the rod at the tip of the pile and at a joint part to rotatively penetrate the pile into the ground.

Description

  The present invention relates to a pile penetrating into the ground as a foundation of a construction and a penetrating device therefor, and more particularly, a pile having an internal space for inserting a rod, and a pile through the inserted rod. The present invention relates to a penetrating device capable of rotating and penetrating into the ground.

  When building a structure on the ground, the surface part does not always have sufficient support. Therefore, a method of stably supporting a building by using a plurality of piles penetrating to a layer having a supporting force (supporting layer) as a foundation and constructing the building on the pile is used.

  Various methods have been proposed for the penetration of piles into the ground.One example is the use of an auger machine to place a steel pipe pile with blades for excavating the ground into the ground. A method of rotational press-fitting is widely used (Patent Document 1). At that time, the steel pipe pile penetrates into the ground while the blades excavate the ground.

  In such a method, since the pile is penetrated by rotation, vibration and noise may be reduced compared to the driving method in which the penetration is performed by hitting the pile head with a drop hammer, diesel hammer, hydraulic hammer, etc. it can.

  In addition, after the penetration of the pile, if the tip does not reach the support layer, weld the second steel pipe pile from the base end side of the penetrated steel pipe pile so that its longitudinal direction matches, Form as a pile. And the method of penetrating a steel pipe pile further deeply by giving a torque continuously from the base end side of the welded pile is used (patent document 2).

JP-A-9-151456 JP-A-9-125386

  In the method described above, a large torque is applied to the proximal end side of the steel pipe pile provided with the blades by the auger machine. The torque is transmitted to the wing near the tip through the pile body. In addition, the wing receives a torque in the direction opposite to its rotational direction as resistance from the ground. Therefore, the steel pipe pile body receives a large twisting force. The stress which this twist produces has caused the steel pipe pile to be damaged or deteriorated.

  Moreover, when the 2nd steel pipe pile is welded with respect to the steel pipe pile provided with the blade | wing, generally the strength is low compared with the pile main body. Therefore, breakage due to twisting is particularly likely to occur in the joint portion.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a pile including blades and an internal space for excavating the ground, and a penetration provided with a rod inserted into the internal space. In the device, the inserted rod is configured so that it can be fitted to the pile at an arbitrary depth during rotation and torque can be applied to the pile. It is providing the pile which can be penetrated without receiving, and the penetration apparatus for it.

  (1) The pile and penetration device concerning the present invention comprise the 1st pile and the penetration device which penetrates the 1st pile into the ground. The first pile includes a first tubular body having a polygonal cross-section intersecting the longitudinal direction, a blade projecting outward from the first tubular body in a direction intersecting the longitudinal direction, and the first And a pressing member extending in a direction intersecting the longitudinal direction in the internal space of the tubular body. The penetration device includes a rod that can be inserted into the internal space of the first tubular body, and a distal end side of the rod. In the internal space of the first tubular body, the polygonal shape of the first tubular body The fitting member is a polygonal shape that can be fitted, and can be brought into contact with the pressing member from the upper side in the vertical direction, while supporting the base end side of the rod, while moving the rod in the vertical direction. And a drive support section that rotates about the axis.

  Here, the blade is the one that rotates in conjunction with the first pile when the first pile penetrates and plays a role of excavating the ground, and is formed in a spiral shape on the side surface of the first tubular body. Including various shapes such as those formed by welding two steel plates at different angles. Further, in the present invention, the fitting of the first tubular body and the rod is a state in which the first tubular body and the rod are fitted so that they cannot rotate with respect to each other in the longitudinal direction. is there.

  The penetration device applies torque to the vicinity of the tip of the first pile through the rod inserted into the internal space, and penetrates the first pile into the ground. Therefore, the first pile penetrates into the ground without being subjected to torsional stress on the first tubular body.

(2) The pile and penetration device according to the present invention is a second tubular body having the same cross-sectional shape as the first tubular body, and a second pile that can be joined to the first tubular body in the longitudinal direction. Furthermore, you may have.
The fitting member may be capable of fitting with both the first tubular body and the second tubular body at a joint portion between the first tubular body and the second tubular body.

  Thereby, the fitting member gives torque to both the first tube body and the second tube body at the joined portion of the joined first tube body and the second tube body. It becomes possible to penetrate two pipes into the ground. Therefore, the first pile and the second pile are penetrated into the ground without being subjected to torsional stress at the joint portion.

  (3) The first tubular body and the second tubular body may be steel pipes.

  Thereby, the 1st pile and the 2nd pile can have big proof stress in the perpendicular and horizontal direction.

  (4) The pile and the penetration device according to the present invention include a tubular joint having means for joining the first tubular body and the second tubular body and fixing both tubular bodies at least in the longitudinal direction. The cross-sectional shape that intersects the longitudinal direction of the joint may be a polygonal shape, and in the cross-sectional shape that intersects the longitudinal direction of the first tubular body and the second tubular body. The polygonal shape can be fitted to each other at the time of joining.

  Here, the fitting of the first tubular body and the second tubular body and the joint in the present invention means that the first tubular body, the second tubular body and the joint are mutually connected with each other in the longitudinal direction. It is a state that is fitted so that it cannot rotate.

   Thereby, a 1st pile and a 2nd pile each fit with a joint, and the torque given to the 2nd pile is efficiently transmitted to a 1st pile.

  (5) The method of penetrating a pile according to the present invention is a first tubular body having a polygonal cross-sectional shape intersecting the longitudinal direction, and is projected outward from the first tubular body in a direction intersecting the longitudinal direction. And a pressing member extending in a direction intersecting the longitudinal direction in the internal space of the first tubular body, and supporting the first pile with the longitudinal direction as a vertical direction, A first step of positioning at a predetermined position; and a rod having a polygonal fitting member that can be fitted in the internal space of the first tubular body on the tip side is inserted into the internal space of the first tubular body, A second step of penetrating while rotating the first pile on the ground by rotating the fitting member in contact with the pressing member.

  Thereby, a 1st pile penetrates in the ground, without receiving the twist stress to a 1st pipe body.

  (6) The method for penetrating a pile according to the present invention is to provide a second pile having a second tubular body having the same cross-sectional shape as the first tubular body of the first pile in the first pile penetrated into the ground. And a third step of joining so that the longitudinal direction of the first and second rods are aligned, and the fitting member of the rod is rotated in a state of being fitted to the joining portion of the first tubular body and the second tubular body. By this, you may further include the 4th step penetrated, rotating the said 1st pile and the said 2nd pile to the ground.

  Thereby, a 1st pile and a 2nd pile penetrate | invade in the ground, without receiving the stress of a twist in a joining part.

  (7) In the method of penetrating a pile according to the present invention, the polygonal shape is the first tubular body and the first through the tubular joint having a polygonal cross-sectional shape intersecting the longitudinal direction during the joining. The first tubular body and the second tubular body are joined to each other so that the polygonal shape in the cross-sectional shape intersecting the longitudinal direction of the two tubular bodies is fitted, and both the tubular bodies are connected to the joint. Then, it may be fixed at least in the longitudinal direction, and at the time of the penetration, the fitting member of the rod may be rotated in a state of being fitted at the joint portion or above. .

  Thereby, a 1st pile and a 2nd pile each fit with a joint, and the torque given to the 2nd pile is efficiently transmitted to a 1st pile.

  According to the present invention, the inserted rod can be fitted to the pile near the tip in the inner space of the pile, and torque can be applied to the pile. Penetration without stress. In addition, the rod inserted into the pile after joining can be engaged with the pile at the joint in the interior space of the pile and torque can be applied to the pile. The joint is inserted without being subjected to torsional stress.

FIG. 1 is a front view and a cross-sectional view of a first pile according to an embodiment of the present invention. FIG. 2 is a front view and a cross-sectional view of the rod according to the embodiment of the present invention. FIG. 3 is a cross-sectional view intersecting the longitudinal direction at the fitting position between the first tubular body and the fitting member. FIG. 4 is a schematic view showing an appearance of a penetration device for penetrating the first pile into the ground. FIG. 5 is a schematic view showing a state of the first pile before penetration. FIG. 6 is a schematic view showing a state of the first pile after penetration. FIG. 7 is a schematic view showing a state of the first pile and the second pile before penetration. FIG. 8 is a schematic view showing a state of the first pile and the second pile after penetration. FIG. 9 is a perspective view showing the rod inside the pile in the welded portion. FIG. 10 is a perspective view and a cross-sectional view showing a joint portion between a first pile and a second pile according to a modification of the present invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings as appropriate. Note that the embodiment described below is merely an example of the present invention, and it is needless to say that the embodiment of the present invention can be changed as appropriate without departing from the gist of the present invention.

[First pile 100]
The front view of the 1st pile 100 which concerns on this embodiment is shown by the left side of FIG. Moreover, sectional drawing in the II cut surface of the 1st pile 100 is shown on the right side. The first pile 100 includes a first tubular body 110 and two blades 120 and 121 welded in the vicinity of the tip. The first tubular body 110 is a metal steel pipe, and its cross-sectional shape intersecting with the longitudinal direction is a square. The inside of the first tube body 110 is hollow. The internal space of the first tubular body 110 corresponds to the internal space in the present invention. An open portion 130 that communicates with the internal space is formed on the proximal end side (upper end side) of the first tubular body 110. In the internal space of the first tubular body 110, pressing members 140 and 141 extend in the direction intersecting the longitudinal direction near the tip (near the lower end). The pressing members 140 and 141 are welded to the inner wall of the first tubular body 110. The blades 120 and 121 are welded near the front end of the side surface of the first tubular body 110. Each of the blades 120 and 121 has a semicircular shape, and the two blades 120 and 121 are arranged so as to form a circular shape as a whole in a plan view and extend to the outside of the first tubular body 110. The blades 120 and 121 are inclined so that their front and back surfaces intersect the longitudinal direction. The directions in which the two blades 120 and 121 are inclined are different from each other.

[Rod 200]
A front view of the rod 200 according to the present embodiment is shown on the left side of FIG. Further, a cross-sectional view of the rod 200 taken along the line II-II is shown on the right side. The rod 200 has a fitting member 220 and a shaft 210. The fitting member 220 is a rectangular parallelepiped having a square cross section that intersects the longitudinal direction. A shaft 210 is connected to one end of the fitting member 220.

  FIG. 3 shows a cross-sectional view of the fitting position between the first tubular body and the fitting member. In the figure, X1 indicates the length of one side of the square in the internal space of the first tubular body 110. X2 in the drawing indicates the length of one side of the square in the cross section of the fitting member 220. The first tubular body and the rod are formed so as to satisfy X2 <X1. Thereby, the fitting member 220 can be inserted into the internal space of the first tubular body 110 through the opening 130. Further, the fitting member 220 is movable in the longitudinal direction in the internal space.

  In the drawing, X3 indicates the length of the diagonal line of the square in the cross section of the fitting member 220. The first tubular body and the rod are formed so as to satisfy X3> X1. Accordingly, when the fitting member 220 rotates about the axis along with the rotation of the shaft 210, the fitting member 220 is fitted to the first tubular body 110 on four side surfaces in the internal space. At that time, the fitting portions on the respective side surfaces receive the same amount of force in the tangential direction of the rotation circle. Therefore, the fitting member 220 can efficiently transmit the torque necessary for penetration to the first tubular body 110.

[Penetration device 300]
A schematic view of the penetration device 300 according to the present embodiment is shown in FIG. A column 330 is attached to the vehicle body 310. The strut 330 can be translated in the longitudinal direction by operating the penetrating device 300. A chuck 320 that supports the base end side of the shaft 210 is attached to the column 330. The chuck 320 can move up and down the side surface of the support 330 by operating the penetrating device 300. Further, the chuck 320 can apply a torque for rotating the rod 200 to the shaft 210 by operating the penetration device 300. Here, the column 330 and the chuck 320 correspond to the drive support portion in the present invention. The vehicle body 310 is a movable heavy machine having a caterpillar as a drive wheel, and a diesel engine is used as a power source. The vehicle body 310 includes an operation seat on which an operator can get in, and the operation seat can be controlled from the operation seat 330 and the chuck 320 described above. In addition, an operation for moving or changing the direction of the vehicle body 310 can be performed from the operation seat.

[Intrusion of the first pile 100]
Then, the procedure at the time of penetrating the 1st pile 100 which concerns on this embodiment in the ground is demonstrated. As shown in FIG. 5, the first pile 100 is attached to the penetration device 300. The proximal end side of the 1st pile 100 is attached to the chuck | zipper 320, and the 1st pile 100 is supported by making the elongate direction into a perpendicular direction. The penetration device 300 is moved to position the first pile 100 at a predetermined position on the ground.

  The rod 200 of the penetration device 300 is inserted into the internal space of the first pipe body 110 of the positioned first pile 100. The rod 200 is inserted into the internal space of the first pile 100 through the opening 130, and the fitting member 220 is brought into contact with the pressing members 140 and 141.

  Subsequently, at the same time as the shaft 210 is rotated, the chuck 320 is moved downward. The rotation of the shaft 210 is transmitted to the first tubular body 110 through the fitting member 220. A downward pressing force in the vertical direction is transmitted from the fitting member 220 to the pressing members 140 and 141. Thereby, the first pile 100 is rotated while being pressed vertically downward.

  As the first pile 100 rotates, the blades 120 and 121 rotate in the ground. Also by the rotation of the blades 120 and 121, the first pile 100 is propelled downward in the ground.

  As FIG. 6 shows, when the front-end | tip of the 1st pile 100 penetrates to the support layer 420, penetration of the 1st pile 100 will be complete | finished. When the penetration of the first pile 100 is completed, the rod 200 is pulled out from the internal space of the first tubular body 110, and the excess on the proximal end side of the first tubular body 110 exposed from the ground is appropriately cut. A series of operations from the insertion of the rod 200 to the end of the penetration of the first pile 100 corresponds to the second step in the present invention.

  Note that cement or the like may be poured from the opening 130 of the first pile 100 during or after the penetration. The cement hardens in the internal space of the first tubular body 110. Thereby, the steel pipe pile 100 can have a further greater yield strength in the vertical and horizontal directions.

[Connection of the first tube body 110 and the second tube body 510]
If the distal end of the first tubular body 110 does not reach the support layer 420 even if the proximal end of the first tubular body 110 penetrates to the vicinity of the ground, the second tubular body 510 ( 2nd pile) is joined. Whether or not the second tubular body 510 needs to be continued is apparent from the depth of the support layer 420 and the length of the first tubular body 110, which have been grasped by a ground survey conducted in advance.

  The second tubular body 510 is a tube having the same cross-sectional shape as the first tubular body 110. While supporting the proximal end of the second tubular body 510 with the chuck 320, the distal end of the second tubular body 510 is brought into contact with the proximal end of the first tubular body 110 so that the longitudinal directions of both are matched. In that state, the first tube body 110 and the second tube body 510 are temporarily fixed by an appropriate fixing tool.

  Subsequently, the proximal end of the first tubular body 110 and the distal end of the second tubular body 510 are welded. The welding method is not particularly limited, and examples thereof include arc welding. A welded portion 520 between the first tubular body 110 and the second tubular body 510 corresponds to a joining portion in the present invention.

[Penetration of first tube body 110 and second tube body 510]
As shown in FIG. 7, the rod 200 is inserted into the internal space from the proximal end side of the welded second pipe body 510 in the same manner as the first pipe body 110. As shown in FIG. 9, the rod 200 is inserted until the fitting member 220 is positioned at the welded portion 520 between the first tube body 110 and the second tube body 510. In order to confirm the position of the fitting member 220, a through hole capable of confirming the internal space may be provided in the vicinity of the welded portion 520 of the first tube body 110 and the second tube body 510.

  Subsequently, at the same time as the shaft 210 is rotated, the chuck 320 is moved downward. The rotation of the shaft 210 is transmitted to the first tube body 110 and the second tube body 510 through the fitting member 220. As the first pile 100 rotates, the blades 120 and 121 rotate in the ground. Also by the rotation of the blades 120 and 121, the first pile 100 and the second pipe body 510 are propelled downward in the ground.

  In the welded portion 520, the fitting member 220 transmits the same amount of torque in the same rotational direction to the first tube body 110 and the second tube body 510. This makes it difficult for a force in the twisting direction to be applied to the welded portion 520, thereby preventing the welded portion 520 from being broken.

  As FIG. 8 shows, when the front-end | tip of the 1st pile 100 penetrates to the support layer 420, penetration of the 1st pile 100 will be complete | finished. When the penetration of the first pile 100 is completed, the rod 200 is pulled out from the internal space of the first tube body 110 and the second tube body 510, and the excess on the proximal end side of the second pile 510 exposed from the ground is appropriately cut. Is done.

[Operational effects of this embodiment]
According to this embodiment, since the 1st pile 100 penetrates in the ground, without receiving the torsional stress to the 1st pipe body 110, even if it is a case where the torsional rigidity of the 1st pipe body 110 is weak. The damage of the 1st pile 100 at the time of penetration can be avoided. Such a first pile 100 can be manufactured at low cost.

  Moreover, since the 1st pipe body 110 and the 2nd pipe body 510 are penetrated in the ground, without receiving the torsional stress in the welded part 520, the risk of the damage of the welded part 520 in the penetration of the pile after joining is not. Can be reduced.

  Moreover, since the 1st pipe body 110 and the 2nd pipe body 510 are steel pipes, the pile after penetration can have big yield strength in the vertical and horizontal direction. Furthermore, the first tube body 110 and the second tube body 510 can be easily manufactured by processing a metal plate, and the first tube body 110 and the second tube body 510 are easily joined together by welding. be able to. Accordingly, the cost for manufacturing and penetrating the pile can be further reduced.

  In addition, the fitting member 220 is fitted with four side surfaces in the internal space of the first tube body 110 and the second tube body 510, respectively, so that the first tube body 110 and the second tube body 510 are penetrated. Torque for can be transmitted efficiently.

  Further, since the torque for penetration is distributed to four side surfaces in the internal space of the first tube body 110 and the second tube body 510, the force received from the fitting member 220 causes the first tube body 110 and the first tube body The risk of damaging the two-pipe 510 can be reduced.

  Moreover, since the fitting member 220 does not require a special engagement operation and is fitted to the first tube body 110 and the second tube body 510 by rotation, the time required for the penetration of the pile can be shortened. .

[Modification]
Hereinafter, modifications of the above-described embodiment will be described. In this modification, a joint is used instead of welding for joining the first tube body 110 and the second tube body 510. The structure of the joint is explained below.

[Joint 610]
Each member before joining is indicated by “before joining” in FIG. The joint 610 is a tubular body having a square cross section that intersects the longitudinal direction, and the length of one side of the square on the inner edge side is the outer edge side in the cross sectional shapes of the first tubular body 110 and the second tubular body 510. It is formed to be longer than the length of the square. Therefore, the first tube body 110 and the second tube body 510 can be inserted from both ends of the joint 610, and the inserted first tube body 110 and second tube body 510 and the joint 610 are in the longitudinal direction. On the other hand, they can move relative to each other.

  The joint 610 is provided with two insertion holes 631 to 634 into which bolts 621 to 628 can be inserted for each surface. Further, similar insertion holes are provided on two back side surfaces not shown in the drawing. A spiral groove for fastening with a bolt is formed in the insertion hole.

  The same shape of insertion holes 635 to 638 is also provided on each side surface of the first tube body 110 and the second tube body 510 around the joint portion. Further, similar insertion holes are provided on two back side surfaces not shown in the drawing. These insertion holes are arranged at positions where they overlap with the insertion holes of the joint 610 at a predetermined depth at the time of joining.

[Connection of the first tube body 110 and the second tube body 510]
After the penetration of the first tubular body 110, the joint 610 is supported in the vertical direction and is moved from its lower end so that the proximal end of the first tubular body 110 is relatively inserted. Of the two insertion holes provided on each side surface of the joint 610, the joint 610 is temporarily fixed so that one of the lower half portions overlaps the insertion hole of the first tubular body 110. Bolts are respectively inserted into the four insertion holes that overlap, and the first tube body 110 and the joint 610 are fastened. Accordingly, the joint 610 is supported on the proximal end side by the first tubular body 110.

  Subsequently, the proximal end of the second tubular body 510 is supported by the chuck 320, and the distal end is inserted from the upper end of the joint 610 supported by the first tubular body 110. Of the two insertion holes provided on the side surfaces of the joint 610, one of the upper half portions has a depth that overlaps with the insertion hole of the second tube 510, and the second tube 510 is temporarily fixed. Bolts are respectively inserted into the four insertion holes that overlap, and the second pipe body 510 and the joint 610 are fastened. Accordingly, the second tubular body 510 is supported by the first tubular body 110 via the joint 610.

  The joined portion after joining is indicated by “after joining” in FIG. The joint 610 is fixed to the first tubular body 110 by bolts 622 and 624, and the second tubular body 510 is fixed to the joint 610 by bolts 621 and 623. Moreover, the same fixation is performed also on the two side surfaces which are not shown in the drawing. A cross-sectional view taken along the line XX of the joining portion is shown in a “cross-sectional view” in FIG. Since the bolt shaft does not hinder the progress of the rod 200 at the time of penetration, each bolt shaft has a length that does not protrude into the internal space of the pile.

[Penetration of first tube body 110 and second tube body 510]
In the same manner as described above, the rod 200 is inserted into the internal space from the proximal end side of the joined second tubular body 510. At that time, the rod 200 is inserted until the fitting member 220 is at a joint portion between the first tube body 110 and the second tube body 510 or at a position above the joint portion. The subsequent procedures are the same as those described above.

  According to such a modification, the joint 610 is fitted to the first tube body 110 and the second tube body 510, respectively. Therefore, when the torque is applied above the joint portion, the torque is effectively the first. Transmitted to the tube. Further, the risk of the shearing force being generated in the bolt due to the slip between both the pipes and the joint 610 can be avoided.

  Moreover, since the joint 610, the 1st pipe body 110, and the 2nd pipe body 510 are fixed in the state which the mutual side surface contacted, a contact area becomes large compared with the case where edge parts are welded. Therefore, the joint portion can be formed with higher strength.

  In addition, since the joint 610 and the first tube body 110 and the second tube body 510 are fixed by bolts, a special tool is not required for joining, and in a short time compared to joining by welding. Enforcement is possible.

  The embodiment described above is merely an example of the present invention, and those skilled in the art can appropriately change the embodiment of the present invention without departing from the gist of the present invention. For example, the cross-sectional shapes of the first tube body 110, the second tube body 510, and the joint 610 may be other polygons such as a regular pentagon and a regular hexagon, and the fitting member 220 can be fitted to them. Any other shape may be used. In addition, the blades 120 and 121 may be anything that excavates the ground and generates a propulsive force, and may be formed spirally on the side surface of the pile, for example. Furthermore, the penetration device 300 does not necessarily have to include the vehicle body 310, and the support column 330 may be supported by another optimal fixture or the like.

DESCRIPTION OF SYMBOLS 100 ... 1st pile 110 ... 1st pipe body 120 ... Blade 121 ... Blade 130 ... Opening part 140 ... Pressing member 141 ... Pressing member 200 ... Rod 210- .... Shaft 220 ... Fitting member 300 ... Penetration machine 310 ... Car body 320 ... Chuck 330 ... Strut 410 ... Soft ground 420 ... Support layer 510 ... Second pipe Body 520 ... weld 610 ... joint 621 ... bolt 622 ... bolt 623 ... bolt 624 ... bolt 625 ... bolt 626 ... bolt 627 ... bolt 628 ... -Bolt 631 ... Insertion hole 632 ... Insertion hole 633 ... Insertion hole 634 ... Insertion hole 635 ... Insertion hole 636 ... Insertion hole 637 ... Insertion hole 638 ... Insertion hole

Claims (7)

Comprising a first pile and a penetrating device for penetrating the first pile into the ground,
The first pile is
A first tubular body having a polygonal cross-sectional shape intersecting the longitudinal direction;
A blade protruding outward from the first tubular body in a direction intersecting the longitudinal direction;
A pressing member extending in a direction crossing the longitudinal direction in the internal space of the first tubular body,
The penetration device is
A rod insertable into the internal space of the first tubular body;
It is provided in the front end side of the rod, and has a polygonal shape that can be fitted into the polygonal shape of the first tubular body in the internal space of the first tubular body, and is vertically above the pressing member. A fitting member capable of abutting from,
A pile and a penetrating device having a drive support portion that supports the proximal end side of the rod and rotates the rod about the axis while moving the rod in the vertical direction. A second tubular body having the same cross-sectional shape as the first tubular body, further comprising a second pile that can be joined to the first tubular body in the longitudinal direction;
The pile according to claim 1, wherein the fitting member can be fitted to both the first tube and the second tube at a joint portion of the first tube and the second tube. Penetration device.   The pile and penetrating device according to claim 2, wherein the first tubular body and the second tubular body are steel pipes. A tubular joint provided with means for joining the first tubular body and the second tubular body and fixing both tubular bodies at least in the longitudinal direction;
The cross-sectional shape that intersects the longitudinal direction of the joint is a polygonal shape, and the polygonal shape in the cross-sectional shape that intersects the longitudinal direction of the first tubular body and the second tubular body, and during the joining The pile and the penetration device according to claim 2, which can be respectively fitted. In a first tubular body having a polygonal cross-sectional shape intersecting the longitudinal direction, a blade projecting outward from the first tubular body in a direction intersecting the longitudinal direction, and an internal space of the first tubular body A first step of positioning a first pile including a pressing member extending in a direction intersecting the longitudinal direction at a predetermined position on the ground while supporting the longitudinal direction as a vertical direction;
A rod having a polygonal fitting member that can be fitted in the internal space of the first tubular body is inserted into the internal space of the first tubular body, and the fitting member is brought into contact with the pressing member. A second step of penetrating the pile including rotating the first pile while rotating the first pile on the ground. A second pile having a second tubular body having the same cross-sectional shape as the first tubular body of the first pile is joined to the first pile penetrated into the ground so that their longitudinal directions match. 3 steps,
The first pile and the second pile are rotated to the ground by rotating the fitting member of the rod in a state in which the rod fitting member is fitted to the joint portion of the first pipe body and the second pipe body. The pile penetrating method according to claim 5, further comprising a fourth step of penetrating while penetrating. At the time of the joining, the polygonal shape is in a cross-sectional shape intersecting the longitudinal direction of the first tubular body and the second tubular body by a tubular joint whose cross-sectional shape intersecting the longitudinal direction is a polygonal shape. The first tubular body and the second tubular body are joined so as to be fitted to the polygonal shape, and both the tubular bodies are fixed to the joint at least in the longitudinal direction,
The method of penetrating a pile according to claim 6, wherein the fitting member of the rod is rotated in the state of being fitted at the joining portion or above the joining portion at the time of the penetration.

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