JP2008223409A - Connection structure of pile, and connection structure of pile and blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pile connection structure that can easily connect piles. <P>SOLUTION: The connection structure is provided for connecting the ends 2 of two piles 1 of circular pipe shape to each other by a joint 3 of short cylinder shape. The end 2 of the pile 1 is formed with a plurality of cutout parts 61 elongated in a longitudinal direction from an endmost part 60, and a plurality of through holes 63. The joint 3 has an inner collar part 10 at the intermediate part in an axis direction, and the inner collar part 10 is formed with an annular recessed groove 13 into which the end 2 of the pile 1 is inserted. A plurality of holding tongue pieces 70 facing the inner peripheral surface 2a of the end 2 of the pile 1 in the inserted state of the end 2 of the pile 1 into the annular recessed groove 13 are provided to uprise from the inner collar part 10. A connecting piece part 74 inserted in the elongate cutout part 61 is formed to connect the inner peripheral surface 11 of the joint 3 to the outer peripheral surfaces 70a of the predetermined number of holding tongue pieces out of the holding tongue pieces 70, and the remaining holding tongue pieces 70 are penetratingly provided with threaded holes 51. A through hole 50 is formed in a cylindrical wall part 12 of the joint 3 coaxially with the threaded hole 51, and a bolt 90 is screwed in a skewering state into the through hole 50, the through hole 63 and the threaded hole 51 to fasten them. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pile connection structure and a pile-blade connection structure.

As an enforcement method of seismic foundations for small buildings such as ordinary houses, a thin steel pipe pile is entered into the ground and driven into the ground (for example, see Patent Document 1), and concrete is placed on the steel pipe pile. There is a way to do it. And when the ground is soft, or when the rock is deep in the ground, one steel pipe pile is not enough, so two steel pipe piles are connected vertically and driven into the ground and driven into the ground. It was out.
Moreover, the blade | wing for excavation etc. was welded and fixed to the lower end part (tip part) of the pile integrally.
JP-A-2005-90128

  However, conventionally, two steel pipe piles are connected by welding, and the piles and blades are also connected by welding, so it takes time for the connection work or the welding strength depends on the technique of the welding operator. There was a problem with variations. In addition, it is necessary to secure the power required for welding or to bring a welding machine to the construction site, which is troublesome and may cause a fire. It was unsuitable for construction.

  Then, an object of this invention is to provide the connection structure of the pile which can connect a pile easily, and the connection structure of a pile which can connect a pile and a blade | wing easily.

  Therefore, the pile connection structure according to the present invention is a connection structure in which the ends of two circular tubular piles are connected to each other with a short cylindrical joint, A plurality of elongated notches are formed in the longitudinal direction from the end edge, and a plurality of through holes are formed. Further, the joint has an inner flange at an intermediate portion in the axial direction, and the pile includes the pile. A plurality of holding tongues facing the inner peripheral surface of the end portion of the pile in a state where the end portion of the pile is inserted into the annular groove. The connecting piece portion inserted into the elongated cutout portion is formed so as to connect the inner peripheral surface of the joint and the outer peripheral surface of a predetermined number of the holding tongue pieces. Further, a screw hole is formed in the remaining holding tongue piece, and a through hole is formed in the cylindrical wall portion of the joint on the same axis as the screw hole. And screwed as skewers 挿状 the through hole and the transmural hole and the screw hole, in which is fixed.

  In addition, the pile connection structure according to the present invention is a connection structure in which the ends of two circular tubular piles are connected to each other by a short cylindrical joint, and is connected to the end of the pile. An elongated notch is formed in the longitudinal direction from the end edge, and a through hole is formed in the end opposite to the elongated notch at 180 °. Further, the joint is formed in an intermediate portion in the axial center direction. An annular concave groove into which the end of the pile is inserted is formed on the inner flange, and the end of the pile is inserted into the annular concave groove in the inner flange. A pair of holding tongues opposed to the inner peripheral surface of the end portion are provided upright from the inner flange portion at a symmetrical position of 180 °, and the connecting piece portion inserted into the elongated cutout portion is an inner peripheral surface of the joint Are formed so as to connect the outer peripheral surfaces of the one holding tongue piece, screw holes are penetrated through the remaining holding tongue pieces, and the screw holes are formed on the same axis. A through-hole is formed in the cylindrical wall portion, and a bolt is screwed into the through-hole, the through-hole, and the screw hole as a skewered shape and fixed.

  In addition, the pile connection structure according to the present invention is a connection structure in which the ends of two circular tubular piles are connected to each other by a short cylindrical joint, and is connected to the end of the pile. A plurality of elongated cutouts are formed in the longitudinal direction from the end edge, and a lateral cutout is formed in the circumferential direction from the side edge of the elongated cutout, and the joint is further formed in the middle portion in the axial center direction. An annular groove is formed in the inner flange, into which the end of the pile is inserted, and the pile is inserted in the annular groove. A plurality of holding tongues opposed to the inner peripheral surface of the end portion are provided upright from the inner flange portion, and the connecting piece portions inserted into the elongated cutout portions are connected to the inner peripheral surface of the joint and the plurality of holding tongues. The outer peripheral surfaces of the pieces are connected to each other, a screw hole is formed therethrough, a through hole is formed in the cylindrical wall portion of the joint on the same axis as the screw hole, and the bolt is attached to the screw hole. And screwed as skewers 挿状 the hole and the lateral notch and the screw hole, in which is fixed.

  Further, the pile connection structure according to the present invention is a connection structure in which the ends of two circular tubular piles are connected to each other by a short cylindrical joint, A plurality of holes are formed, and the joint has an inner flange at an axially intermediate portion, and an annular groove into which an end of the pile is inserted is formed in the inner flange, and A plurality of holding tongue pieces are provided in an upright manner from the inner flange portion so as to be opposed to the inner peripheral surface of the end portion of the pile in a state where the end portions of the pile are inserted into the annular concave grooves. A through hole is formed in the cylindrical wall portion of the joint on the same axis as the screw hole, and the bolt is inserted into the through hole, the through hole, and the screw hole. It is screwed and fixed.

  Moreover, the connection structure of the pile and blade | wing which concerns on this invention is a connection structure of the pile and blade | wing which connects an edge part and blade | wing of a circular tubular pile, Comprising: It is a longitudinal direction from the edge part to the edge part of the said pile. A plurality of elongated slits and a plurality of through-holes are formed, and the blade has a short cylindrical bottomed or bottomless connecting part integrally or integrally, and further, the bottom of the connecting part An annular ditch into which the end of the pile is inserted is formed on the upper surface of the wall or inner flange, and the end of the pile is inserted in the state where the end of the pile is inserted into the annular ditch. A plurality of holding tongues opposed to the peripheral surface are provided upright from the inner flange, and a connecting piece inserted into the elongated cutout is provided in the inner peripheral surface of the connecting part and a predetermined one of the holding tongues. A plurality of outer peripheral surfaces are connected to each other, and a screw hole is penetrated through the remaining holding tongue, and the above-mentioned link is formed on the same axis as the screw hole. Part of the cylindrical wall portion of the through hole is formed in the bolt through hole and the transmural hole and the screw hole and screwed as skewers 挿状, in which is fixed.

  Moreover, the connection structure of the pile and blade | wing which concerns on this invention is a connection structure of the pile and blade | wing which connects an edge part and blade | wing of a circular tubular pile, Comprising: It is a longitudinal direction from the edge part to the edge part of the said pile. And a through-hole is formed in the end opposite to the elongated notch 180 °, and the blade is integrally or integrally formed with a bottomed or bottomless short cylindrical shape. An annular groove is formed on the bottom wall or inner flange of the coupling portion, and an end of the pile is inserted into the annular groove. A pair of holding tongues facing the inner peripheral surface of the end portion of the pile in the inserted state are provided as standing from the inner flange portion at a symmetrical position of 180 °, and are inserted into the elongated cutout portion. The one part is formed so as to connect the inner peripheral surface of the connecting part and the outer peripheral surface of one holding tongue piece, and screw holes are formed through the remaining holding tongue pieces. The screw hole is formed on the same axial center with a through hole formed in the cylindrical wall portion of the connecting portion, and the bolt is screwed into the through hole, the through hole, and the screw hole as a skewered shape and fixed. Is.

  Moreover, the connection structure of the pile and blade | wing which concerns on this invention is a connection structure of the pile and blade | wing which connects an edge part and blade | wing of a circular tubular pile, Comprising: It is a longitudinal direction from the edge part to the edge part of the said pile. A plurality of elongated cutouts are formed, and a lateral cutout is formed in the circumferential direction from the side edge of the elongated cutout, and the blade is integrally or integrally formed with a bottomed or bottomless short cylindrical shape. And an annular groove into which the end of the pile is inserted is formed on the bottom wall or the inner flange of the connecting portion, and the end of the pile is the annular groove. A plurality of holding tongue pieces opposed to the inner peripheral surface of the end portion of the pile in the state of being inserted into the stake are provided as standing from the inner flange portion, and the connecting piece portion to be inserted into the elongated cutout portion is connected to the connecting portion. Formed so as to connect the inner peripheral surface of the portion and the outer peripheral surfaces of the plurality of holding tongue pieces, and the threaded hole is formed so as to be on the same axis as the threaded hole. To form a cylindrical wall portion into the through hole of the connecting portion, the bolt through hole and the transverse notch and the screw hole and screwed as skewers 挿状, in which is fixed.

  Moreover, the connection structure of a pile and a blade according to the present invention is a connection structure of a pile and a blade that connects the end of the circular pile and the blade, and a plurality of through holes are formed in the end of the pile. The blade has a short-cylinder connection part with a bottom or no bottom integrally or integrally, and the end of the pile is inserted into the upper surface of the bottom wall or the inner collar part of the connection part. A plurality of holding tongues facing the inner peripheral surface of the end portion of the pile are erected from the inner flange portion in a state where the annular groove is formed and the end portion of the pile is inserted into the annular groove. A threaded hole is formed in the plurality of holding tongue pieces, a through hole is formed in the cylindrical wall portion of the connecting portion on the same axis as the screw hole, and a bolt is connected to the through hole and the above It is screwed into the through hole and the screw hole as a skewer and fixed.

  According to the pile connection structure of the present invention, a pair of piles can be easily connected via a joint, and there is no need to weld the piles as in the prior art. This simplifies the connection work of the piles and can greatly reduce the work time. In addition, it is not necessary to prepare electric power and equipment necessary for welding, and there is no risk of fire, so it is particularly suitable for construction of a basic structure of a general house. Also, connection work in rainy weather is possible. Moreover, since a pair of piles are connected with a joint and a bolt by a mechanical structure, the connection strength can be made uniform and can be removed. Furthermore, since the bolt is supported in the form of a double-supported beam, it is advantageous in terms of strength and is not easily damaged.

  According to the connection structure of a pile and a blade | wing of this invention, a pile and a blade | wing can be connected easily. That is, since it is not necessary to weld and connect the pile and the blade as in the conventional case, the connection work between the pile and the blade can be simplified and the working time can be greatly shortened. In addition, it is not necessary to prepare electric power and equipment necessary for welding, and there is no risk of fire, so it is particularly suitable for construction of a basic structure of a general house. Also, connection work in rainy weather is possible. Moreover, since a pile and a blade | wing are connected with a connection part and a volt | bolt by a mechanical structure, connection strength can be made uniform and removal is also possible. Furthermore, since the bolt is supported in the form of a double-supported beam, it is advantageous in terms of strength and is not easily damaged.

  FIG. 1 shows the state of use of the present invention. The connection structure of the pile of the present invention is a connection structure in which the ends 2 of two circular tubular piles 1 are connected to each other by a short tubular joint 3, for example, for two or more houses It is used as a connection structure when connecting steel pipe piles sequentially. The joint 3 is manufactured by casting, for example (cast iron). Preferably, the joint 3 is made of ductile or mariable. After the two piles 1 are connected, a rotational torque T is given to the upper pile 1 (by a rotary pushing means of a construction machine not shown), and this rotational torque T is transmitted to the lower pile 1. A blade 30 is connected to the end 2 of the lower end 4 of the lower pile 1 as described later. As the lower pile 1 rotates, the blade 30 rotates, and the pile 1 is buried while excavating the underground G.

  2A and FIG. 3 and FIG. 7 show the first embodiment of the present invention. The connection structure of the present invention is a structure in which the end portions 2 of two circular piles 1 are connected to each other by a short cylindrical joint 3, and for example, the end portion 2 of the pile 1 is the outermost edge. Two elongated slits 61 are provided from the portion 60 in the longitudinal direction at intervals of 180 ° in the circumferential direction, and through holes 63 are provided at 90 ° and 270 ° in the circumferential direction from one elongated notch 61. ing.

  Next, the joint 3 has a short cylindrical shape and has an inner flange portion 10 in an intermediate portion in the axial center direction, and an annular groove 13 into which the end portion 2 of the pile 1 can be inserted is formed. Further, in the state where the pile 1 is inserted into the joint 3, the holding tongue pieces 70 are arranged at intervals of 90 ° in the circumferential direction as standing from the inner flange portion 10 facing the inner peripheral surface 2 a of the end portion 2 of the pile 1. Provided. Further, the outer peripheral surface 70a of the two holding tongue pieces 70 and the inner peripheral surface 11 of the joint 3 are inserted so that the bottom end portion 60 of the end portion 2 of the pile 1 contacts the bottom surface 13a of the annular groove 13. Are provided with connecting piece portions 74 into which the elongated cutout portions 61 can be inserted, and the remaining two holding tongue pieces have screw holes 51 on the same axis as the through holes 63 of the end portion 2 of the pile 1. Is provided. Further, a through hole 50 is provided on the cylindrical wall portion 12 of the joint 3 on the same axis as the screw hole 51.

  That is, while inserting the two elongated cutout portions 61 of the end portion 2 of the pile 1 into the two connecting piece portions 74, the outermost edge 60 of the end portion 2 of the pile 1 is connected to the annular groove of the joint 3. 13 until it touches the bottom surface 13a of the joint 13, and then, using bolts 90, the through hole 50 of the cylindrical wall portion 12 of the joint 3, the through hole 63 of the end portion 2 of the pile 1 and the screw hole 51 of the holding tongue piece 70 are skewed. The pile 1 and the joint 3 can be fixed by screwing in a shape.

  2B and FIG. 4 and FIG. 8 show a second embodiment of the present invention. The connection structure of the present invention is a structure in which the piles 1 are similarly connected to each other by the joint 3. For example, the end 2 of the pile 1 is provided with an elongated notch 61 in the longitudinal direction from the outermost edge 60. At the same time, a through-hole 63 is provided in the end 2 opposite to the circumferential direction by 180 °.

  Next, the joint 3 has an inner flange portion 10 as in the first embodiment, and an annular groove 13 is formed. In addition, a pair of holding tongues 70 are provided at 180 ° symmetrical positions on the inner peripheral surface 2a of the end portion 2 of the pile 1 in a state of being inserted into the joint 3 so as to stand upright from the inner flange portion 10. In addition, the outer peripheral surface 70a of one holding tongue piece 70 and the inner peripheral surface 11 of the joint 3 are inserted so that the bottom edge 13a of the end 1 of the pile 1 contacts the bottom surface 13a of the annular groove 13. A connecting piece portion 74 into which the elongated cutout portion 61 can be inserted is provided so as to connect the two, and the remaining one holding tongue piece 70 has a screw on the same axis as the through-hole 63 of the end portion 2 of the pile 1. A hole 51 is provided. Further, a through hole 50 is provided on the cylindrical wall portion 12 of the joint 3 on the same axis as the screw hole 51.

  That is, while inserting the elongated notch 61 of the end 2 of the pile 1 into the connecting piece 74, the outermost edge 60 of the end 2 of the pile 1 is inserted until it hits the bottom surface 13 a of the annular groove 13 of the joint 3, Next, using the bolt 90, the through hole 50 of the cylindrical wall portion 12 of the joint 3, the through hole 63 of the end portion 2 of the pile 1 and the screw hole 51 of the holding tongue 70 are screwed in a skewered manner and the pile 1 And the joint 3 can be fixed.

  FIG. 2C and FIG. 5 and FIG. 9 show a third embodiment of the present invention. Similarly, the connection structure of the present invention is a structure in which the piles 1 are connected to each other by the joint 3. For example, the end 2 of the pile 1 has an elongated notch 61 from the outermost edge 60 in the longitudinal direction. In addition, a lateral notch 62 is provided from the side edge 61a of the elongated notch 61 in the circumferential direction opposite to the excavation rotation direction N, and the end also on the end surface 180 ° opposite to the circumferential direction. 2 is provided with an elongated notch 61 in the longitudinal direction from the outermost edge 60, and a lateral notch 62 is provided in the circumferential direction opposite to the excavation rotation direction N from the side edge 61a of the elongated notch 61. ing.

  Next, the joint 3 has an inner flange portion 10 as in the first embodiment, and an annular groove 13 is formed. In addition, two holding tongue pieces 70 are provided at 180 ° symmetrical positions as standing from the inner flange portion 10 on the inner peripheral surface 2a of the end portion 2 of the pile 1 in a state where the pile 1 is inserted into the joint 3. Yes. Further, the outer peripheral surface 70a of the two holding tongue pieces 70 and the inner peripheral surface 11 of the joint 3 are inserted so that the bottom end portion 60 of the end portion 2 of the pile 1 contacts the bottom surface 13a of the annular groove 13. A connecting piece portion 74 into which the elongated cutout portion 61 can be inserted is provided so as to connect the two, and the two holding tongue pieces 70 are provided with a screw hole 51 through which the bolt 90 can penetrate the horizontal cutout portion 62. Further, a through hole 50 is provided on the cylindrical wall portion 12 of the joint 3 on the same axis as the screw hole 51.

  That is, while inserting the elongate notch 61 of the end 2 of the pile 1 into each connecting piece 74, the outermost edge 60 of the end 2 of the pile 1 is inserted until it contacts the bottom surface 13a of the annular groove 13 of the joint 3. Next, the bolt 90 is used to screw the through-hole 50 in the cylindrical wall portion 12 of the joint 3, the lateral notch 62 in the end 2 of the pile 1, and the screw hole 51 in the holding tongue 70 into a skewered shape. The pile 1 and the joint 3 can be fixed.

  FIG. 2D and FIG. 6 and FIG. 10 show a fourth embodiment of the present invention. Similarly, the connection structure of the present invention is a structure in which the piles 1 are connected to each other by the joint 3. For example, the end 2 of the pile 1 is provided with four through holes 63 at 90 ° intervals in the circumferential direction. Yes.

  Next, the joint 3 has an inner flange portion 10 as in the first embodiment, and an annular groove 13 is formed. Further, in the state where the pile 1 is inserted into the joint 3, the holding tongue pieces 70 are arranged at intervals of 90 ° in the circumferential direction as standing from the inner flange portion 10 facing the inner peripheral surface 2 a of the end portion 2 of the pile 1. Provided. Further, the four holding tongue pieces are inserted into the through holes 63 of the end portion 2 of the pile 1 in such a state that the bottom end portion 60 of the end portion 2 of the pile 1 hits the bottom surface 13a of the annular groove 13. And a screw hole 51 on the same axis. Further, a through hole 50 is provided on the cylindrical wall portion 12 of the joint 3 on the same axis as the screw hole 51.

  That is, the outermost edge 60 of the end 2 of the pile 1 is inserted until it hits the bottom surface 13a of the annular groove 13 of the joint 3, and then the through hole 50 and the pile of the cylindrical wall 12 of the joint 3 using the bolt 90 The pile 1 and the joint 3 can be fixed by screwing the through hole 63 of the end portion 1 of 1 and the screw hole 51 of the holding tongue piece 70 as a skewer.

  FIG. 1 shows the state of use of the present invention. The connection structure of the pile and the blade of the present invention is a connection structure for connecting the end portion 2 of the tubular pile 1 with a short cylindrical connection portion 31 of the blade 30, and the steel pipe pile for housing and the blade are connected to each other. Used as a connection structure when connecting. The connection part 31 is manufactured by casting (it is set as cast iron), for example. Preferably, the connecting portion 31 is made of ductile or mariabble. After the two piles 1 are connected, a rotational torque T is given to the upper pile 1 (by a rotary pushing means of a construction machine not shown), and this rotational torque T is transmitted to the lower pile 1. A blade 30 is connected to the lower end 4 of the lower pile 1 as will be described later. As the lower pile 1 rotates, the blade 30 rotates, and the pile 1 is buried while excavating the underground G.

  FIG. 2A and FIG. 11 and FIG. 15 show a fifth embodiment of the present invention. The connection structure of the present invention is a structure in which the end 2 of the circular pile 1 is connected to the blade 30 (the short cylindrical connecting portion 31). For example, the end 2 of the pile 1 is the outermost edge. Two elongated slits 61 are provided in the longitudinal direction from 60 at intervals of 180 ° in the circumferential direction, and through holes 63 are provided at 90 ° and 270 ° in the circumferential direction from one elongated notch 61. Yes.

  Next, the connecting portion 31 of the blade 30 has a short cylindrical shape, and has an inner flange portion 10 at an axially central portion, and an annular groove 13 into which the end portion 2 of the pile 1 can be inserted is formed. In addition, with the pile 1 inserted into the connecting portion 31, the holding tongue pieces 70 are arranged at intervals of 90 ° in the circumferential direction as standing from the inner flange portion 10 to face the inner peripheral surface 2 a of the end portion 2 of the pile 1. There are four. Further, the outer peripheral surface 70a of the two holding tongue pieces 70 and the inner peripheral surface 11 of the joint 3 are inserted so that the bottom end portion 60 of the end portion 2 of the pile 1 contacts the bottom surface 13a of the annular groove 13. Are provided with connecting piece portions 74 into which the elongated cutout portions 61 can be inserted, and the remaining two holding tongue pieces are screw holes on the same axis as the through holes 63 of the end portion 2 of the pile 1. 51 are provided. Further, a through hole 50 is provided on the cylindrical wall portion 12 of the connecting portion 31 on the same axis as the screw hole 51.

  That is, while inserting the two elongated cutout portions 61 of the end portion 2 of the pile 1 into each of the two connecting piece portions 74, the outermost edge portion 60 of the end portion 2 of the pile 1 is connected to the annular groove 13 of the connecting portion 31. Until it hits the bottom surface 13a of the joint, and then using bolts 90, the through hole 50 of the cylindrical wall portion 12 of the joint 3, the through hole 63 of the end portion 2 of the pile 1 and the screw hole 51 of the holding tongue 70 are skewed. And the pile 1 and the joint 3 can be fixed together.

  FIG. 2B and FIG. 12 and FIG. 16 show a sixth embodiment of the present invention. The connection structure of the present invention is a structure in which the pile 1 is similarly connected to the blade 30 (the connecting portion 31 thereof). For example, the end 2 of the pile 1 is elongated from the outermost edge 60 in the longitudinal direction. A portion 61 is provided, and a through hole 63 is provided in the end portion 2 opposite to the circumferential direction by 180 °.

  Next, the connection part 31 has the inner collar part 10 similarly to 5th Embodiment, and the annular groove 13 is formed. In addition, two holding tongue pieces 70 are provided at 180 ° symmetrical positions as standing from the inner flange portion 10 on the inner peripheral surface 2a of the end portion 2 of the pile 1 in a state where the pile 1 is inserted into the joint 3. Yes. In addition, the outer peripheral surface 70a of one holding tongue piece 70 and the inner peripheral surface 11 of the joint 3 are inserted so that the bottom edge 13a of the end portion 2 of the pile 1 contacts the bottom surface 13a of the annular groove 13. A connecting piece 74 into which the elongated notch 61 can be inserted is provided so as to connect the two, and the remaining one holding tongue piece has a screw hole on the same axis as the through-hole 63 of the end 2 of the pile 1. 51 are provided. Further, a through hole 50 is provided on the cylindrical wall portion 12 of the connecting portion 31 on the same axis as the screw hole 51.

  That is, while inserting the elongated notch 61 of the end 2 of the pile 1 into the connecting piece 74, the outermost edge 60 of the end 2 of the pile 1 is inserted until it hits the bottom surface 13 a of the annular groove 13 of the connecting 31. Next, the bolt 90 is used to screw the through hole 50 of the cylindrical wall portion 12 of the connecting portion 31, the through hole 63 of the end portion 2 of the pile 1, and the screw hole 51 of the holding tongue piece 70 as a skewered shape. The pile 1 and the joint 3 can be fixed.

  FIG. 2C and FIG. 13 and FIG. 17 show the seventh embodiment of the present invention. The connection structure of the present invention is a structure in which the pile 1 is similarly connected to the blade 30 (the connecting portion 31 thereof). For example, the end 2 of the pile 1 is elongated from the outermost edge 60 in the longitudinal direction. 61, a lateral notch 62 is provided from the side edge 61a of the elongated notch 61 in the circumferential direction opposite to the excavation rotation direction N, and is also provided on the end surface 180 ° opposite to the circumferential direction. An elongated notch 61 is provided in the longitudinal direction from the outermost edge 60 of the end 2, and a lateral notch 62 is formed in a circumferential direction opposite to the excavation rotation direction N from the side edge 61 a of the elongated notch 61. Is provided.

  Next, the connection part 31 has the inner collar part 10 similarly to 5th Embodiment, and the annular groove 13 is formed. In addition, two holding tongue pieces 70 are provided at 180 ° symmetrical positions as standing from the inner flange portion 10 on the inner peripheral surface 2a of the end portion 2 of the pile 1 in a state where the pile 1 is inserted into the joint 3. Yes. In addition, the outer peripheral surface 70a of the two holding tongue pieces 70 and the inner peripheral surface of the connecting portion 31 are inserted so that the bottom end 13a of the end portion 2 of the pile 1 contacts the bottom surface 13a of the annular groove 13. 11 is provided with a connecting piece portion 74 into which the elongated cutout portion 61 can be inserted, and the two holding tongue pieces 70 are provided with a screw hole 51 through which the bolt 90 can penetrate the horizontal cutout portion 62. Further, a through hole 50 is provided on the cylindrical wall portion 12 of the connecting portion 31 on the same axis as the screw hole 51.

  That is, until the end 60 of the end portion 2 of the pile 1 hits the bottom surface 13a of the annular groove 13 of the connecting portion 31 while inserting the elongated notches 61 of the end portion 2 of the pile 1 into the connecting piece portions 74, respectively. Next, the bolt 90 is used to screw the through hole 50 of the cylindrical wall portion 12 of the connecting portion 31, the lateral notch portion 62 of the end portion 2 of the pile 1, and the screw hole 51 of the holding tongue 70 into a skewered shape. Thus, the pile 1 and the connecting portion 31 can be fixed.

  FIG. 2D and FIG. 14 and FIG. 18 show an eighth embodiment of the present invention. Similarly, the connection structure of the present invention is a structure in which the pile 1 is connected to the blade 30 (the connecting portion 31 thereof). For example, the end 2 of the pile 1 passes through the through-hole 63 from the outermost edge 60 in the circumferential direction. Are provided at intervals of 90 °.

  Next, the connection part 31 has the inner collar part 10 similarly to 5th Embodiment, and the annular groove 13 is formed. In addition, with the pile 1 inserted into the connecting portion 31, the holding tongue pieces 70 are arranged at intervals of 90 ° in the circumferential direction as standing from the inner flange portion 10 to face the inner peripheral surface 2 a of the end portion 2 of the pile 1. There are four. Further, the four holding tongue pieces are inserted into the through holes 63 of the end portion 2 of the pile 1 in such a state that the bottom end portion 60 of the end portion 2 of the pile 1 hits the bottom surface 13a of the annular groove 13. And a screw hole 51 on the same axis. Further, a through hole 50 is provided on the cylindrical wall portion 12 of the connecting portion 31 on the same axis as the screw hole 51.

  That is, the outermost edge portion 60 of the end portion 2 of the pile 1 is inserted until it contacts the bottom surface 13a of the annular groove 13 of the connecting portion 31, and then the through hole 50 of the cylindrical wall portion 12 of the connecting portion 31 using the bolt 90. The through hole 63 of the end 2 of the pile 1 and the screw hole 51 of the holding tongue 70 are screwed in a skewered shape so that the pile 1 and the joint 3 can be fixed.

  In the first, second, and fourth embodiments of the above-described pile connection structure and the fifth, sixth, and eighth embodiments of the pile-blade connection structure, the rotational torque T as shown in FIG. When the pile 1 is rotated in the N direction, the bolt 63 in which the inner surface 63a of the through hole 63 at the end 2 of the pile 1 is screwed into the screw hole 51 of the holding tongue piece 70 as shown in FIG. The direction (inner diameter direction and outer diameter direction) in which the inner end edge 63a of the through-hole 63 of the pile 1 is crushed and the wall thickness is increased as shown in FIG. To the inner peripheral surface 11 of the cylindrical wall portion 12 and the outer peripheral surface 70a of the holding tongue piece 70 with extremely high surface pressure. Symbols S and T in FIG. 19 (c) indicate contact portions that are in contact with each other at an extremely high surface pressure. The friction resistance increases due to the extremely high contact surface pressure at the contact portions S and T, and the pile 1 and The rotational torque T transmitted between the cylindrical wall portion 12 and the pile 1 and the holding tongue 70 is extremely large, and as a whole, a large rotational force is transmitted from the pile 1 to the pile 1 and further to the blade 30. Go.

  Further, in the third embodiment of the above-mentioned pile connection structure and the seventh embodiment of the pile-blade connection structure, as shown in FIG. 20, (a) to (b) and In sequence with (c), the inner end edge (inner surface) 62a of the transverse notch 62 is crushed by the rotational torque T in the direction of arrow N (causing plastic deformation with increasing wall thickness), and at the contact portions S and T. With a very high contact surface pressure, the inner peripheral surface 11 of the cylindrical wall portion 12 and the outer peripheral surface 70a of the holding tongue piece 70 are contacted and pressed to increase the frictional resistance, thereby transmitting a large rotational torque. In some cases, it is desirable that the side edge 61a of the notch 61 is brought into strong contact with the connecting piece portion 74 to receive a force at the connecting piece portion 74 (such as when the bolt 90 has a small diameter).

  In the embodiment of the pile connection structure and the embodiment of the pile-blade connection structure described above, the pile 1 and the joint 3 or the pile 1 and the blade 30 are fixed by the bolt 90. The pile 1 and the joint 3 or the pile 1 and the blade 30 can be easily removed. Further, by providing a concave groove in the inner flange portion 10 or the bottom wall 32 and fixing the end portion 2 of the pile 1 as an insertion shape, the deformation in the inner diameter direction of the pile 1 during rotation is restricted, and the rotational torque T Is not dispersed in the deformation direction of the pile 1, and the force can be efficiently transmitted in the circumferential direction.

Note that the present invention can be modified in various ways other than the embodiment shown in the drawings. For example, as shown in FIG. 21 (a), the head 90a of the bolt 90 is attached to the outer peripheral surface 12b of the cylindrical wall portion 12. Even if protruding and screwed, as shown in FIG. 21 (b), the through hole 50 may be set larger than the bolt head 90a, and the bolt head 90a may be screwed so as to be buried in the cylindrical wall portion 12. 2B has the advantage that the bolt 90 is not easily worn or damaged (during rotation). Further, the number of the elongated cutout portions 61, the through holes 63, and the holding tongue pieces 70 can be increased or decreased.
By the way, in order to process the notch 61, the lateral notch 62 or the through hole 63 as shown in FIGS. 2A to 2D at the end of the pile 1, the unprocessed pipe material (pile 1) is used. Insert a metal fitting into the inside of the end and press it in the direction perpendicular to the axis from the outer periphery with a male die or punch that operates linearly with an actuator such as a hydraulic pressure, for plastic processing such as pressing or punching. It is desirable to form.

  As described above, the present invention is a connection structure in which the ends 2 of two circular piles 1 are connected to each other by a short tubular joint 3, and the ends 2 of the piles 1 are connected to each other. A plurality of elongated cutout portions 61 are formed in the longitudinal direction from the endmost edge portion 60, a plurality of through holes 63 are formed, and the joint 3 has an inner flange portion 10 at an intermediate portion in the axial center direction. 10 is formed with an annular groove 13 into which the end 2 of the pile 1 is inserted, and the inner periphery of the end 2 of the pile 1 with the end 2 of the pile 1 inserted into the annular groove 13. A plurality of holding tongues 70 facing the surface 2a are provided upright from the inner flange 10, and a connecting piece 74 inserted into the elongated cutout 61 is provided between the inner peripheral surface 11 of the joint 3 and the holding tongue 70. A predetermined number of outer peripheral surfaces 70a are formed so as to be connected, and the remaining retaining tongue 70 is threaded with a screw hole 51, and the cylindrical wall portion 12 of the joint 3 is located on the same axis as the screw hole 51. A through hole 50 is formed in the The pile connection structure is characterized in that it is screwed into the through hole 50, the through hole 63 and the screw hole 51 as a skewer and fixed, so that the pair of piles 1 can be easily connected via the joint 3. This eliminates the need for welding the piles as in the prior art. Thereby, the connection work of the pile 1 can be simplified and the work time can be greatly shortened. In addition, it is not necessary to prepare electric power and equipment necessary for welding, and there is no risk of fire, so it is particularly suitable for construction of a basic structure of a general house. Also, connection work in rainy weather is possible. Moreover, since a pair of pile 1 is connected with the joint 3 and the volt | bolt 90 with a mechanical structure, connection strength can be made uniform and removal is also possible. Also, by inserting the elongated cutout portion 61 into the connecting piece portion 74, it plays a role of circumferential positioning, and the through-hole 50 of the joint 3 and the through-hole 63 of the pile 1 can be on substantially the same axial center. 90 screwing is easy. Further, by inserting the elongated cutout portions 61 into the plurality of connecting piece portions 74 of the joint 3, the connecting piece portion 74 serves as a guide, and the axis of the joint 3 and the axis of the pile 1 are substantially the same axis. Since it becomes upper, the large-diameter pile 1 and the heavy pile 1 do not fall diagonally, and the pile 1 can be easily inserted into the joint 3. In addition, since bolts 90 are used to fix at multiple locations, a larger rotational torque is required, such as excavation with a large-diameter pile 1, deep excavation by connecting several piles 1, or excavation of hard ground. Can cope with various construction.

  Further, the present invention is a connection structure in which the end portions 2 of two circular tubular piles 1 are connected to each other by a short cylindrical joint 3, and the end edge 2 of the pile 1 is connected to the outermost edge. An elongated notch 61 is formed from the portion 60 in the longitudinal direction, and a through-hole 63 is formed at the end 2 opposite to the elongated notch 61 at 180 °. An inner groove portion 10 is formed, an annular groove 13 into which the end 2 of the pile 1 is inserted is formed in the inner flange portion 10, and an end 2 of the pile 1 is inserted into the annular groove 13 In the state, a pair of holding tongues 70 facing the inner peripheral surface 2a of the end 2 of the pile 1 are provided upright from the inner collar 10 at a symmetrical position of 180 °, and are connected pieces inserted into the elongated notch 61 The portion 74 is formed so as to connect the inner peripheral surface 11 of the joint 3 and the outer peripheral surface 70a of one holding tongue piece 70, the screw holes 51 are penetrated through the remaining holding tongue pieces 70, and the screw holes 51 are formed. Through hole 5 on tube wall 12 of joint 3 on the same axis 0 is formed, and the bolt 90 is screwed into the through hole 50, the through hole 63, and the screw hole 51 in a skewered manner, and is fixed. Can be easily connected to each other, and there is no need to weld the piles as in the prior art. Thereby, the connection work of the pile 1 can be simplified and the work time can be greatly shortened. In addition, it is not necessary to prepare electric power and equipment necessary for welding, and there is no risk of fire, so it is particularly suitable for construction of a basic structure of a general house. Also, connection work in rainy weather is possible. Further, since the pair of piles 1 are connected by a mechanical structure with the joint 3 and the bolt 90, the connection strength can be made uniform and can be detached. Also, by inserting the elongated cutout portion 61 into the connecting piece portion 74, it plays a role of circumferential positioning, and the through-hole 50 of the joint 3 and the through-hole 63 of the pile 1 can be on substantially the same axial center. 90 screwing work is easy. In addition, by making the elongated notch 61 into the connecting piece 74 of the joint 3 at one place, the shaft center of the joint 3 and the shaft center of the pile 1 can be easily and quickly on substantially the same axis. Since the bolt 90 is screwed in one place, the connection work time is shortened and the work efficiency is increased. Therefore, it is possible to cope with construction where a large number of piles are buried, nighttime where time is limited, and emergency construction. Further, since only two holding tongue pieces 70 are required, the joint 3 can be reduced in size and weight, and can be manufactured at a low cost. Moreover, since the processing area to the edge part 2 of the pile 1 is small, it can respond also to the thin pile 1 with a small surface area.

  Further, the present invention is a connection structure in which the end portions 2 of two circular tubular piles 1 are connected to each other by a short cylindrical joint 3, and the end edge 2 of the pile 1 is connected to the outermost edge. A plurality of elongated cutout portions 61 are formed in the longitudinal direction from the portion 60, a lateral cutout portion 62 is formed in the circumferential direction from the side edge 61a of the elongated cutout portion 61, and the joint 3 is intermediate in the axial direction. The inner flange portion 10 has an inner groove portion 10 formed with an annular groove 13 into which the end 2 of the pile 1 is inserted, and the end portion 2 of the pile 1 is inserted into the annular groove 13. A plurality of holding tongues 70 facing the inner peripheral surface 2a of the end 2 of the pile 1 are provided in an upright state from the inner flange 10, and a connecting piece 74 inserted into the elongated notch 61 is connected to the joint. 3 and the outer peripheral surface 70a of the plurality of holding tongues 70 are formed so as to be connected to each other, the screw hole 51 is penetrated, and the cylindrical wall of the joint 3 is formed on the same axis as the screw hole 51. The through hole 50 is formed in the part 12, and the bolt 90 is The pile connection structure is characterized in that it is screwed into the through hole 50, the lateral notch 62 and the screw hole 51 as a skewer and fixed, so that the pair of piles 1 can be easily connected via the joint 3 This eliminates the need for welding the piles as in the prior art. Thereby, the connection work of the pile 1 can be simplified and the work time can be greatly shortened. In addition, it is not necessary to prepare electric power and equipment necessary for welding, and there is no risk of fire, so it is particularly suitable for construction of a basic structure of a general house. Also, connection work in rainy weather is possible. Moreover, since a pair of pile 1 is connected with the joint 3 and the volt | bolt 90 with a mechanical structure, connection strength can be made uniform and removal is also possible. Also, by inserting the elongated cutout portion 61 into the connecting piece portion 74, it plays a role of circumferential positioning, and the bolt 90 inserted from the through hole 50 of the joint 3 can pass through the horizontal cutout portion 62 of the pile 1 Therefore, the screwing operation is easy. Further, by inserting the elongated cutout portions 61 into the plurality of connecting piece portions 74 of the joint 3, the connecting piece portion 74 serves as a guide, and the axis of the joint 3 and the axis of the pile 1 are substantially the same axis. Since it becomes upper, the pile 1 can be easily inserted into the joint 3. In addition, since the elongated cutout portion 61 and the horizontal cutout portion 62 are formed in one shape, the end portion 2 of the pile 1 can be efficiently processed because it can be formed in one step.

  Further, the present invention is a connection structure in which the ends 2 of two circular piles 1 are connected to each other by a short cylindrical joint 3, and the through hole 63 is formed in the end 2 of the pile 1. And the joint 3 has an inner flange portion 10 at an axially central portion, and the inner flange portion 10 is formed with an annular groove 13 into which the end portion 2 of the pile 1 is inserted, and A plurality of holding tongues 70 facing the inner peripheral surface 2a of the end 2 of the pile 1 in a state where the end 2 of the pile 1 is inserted into the annular groove 13 are provided upright from the inner flange 10; Screw holes 51 are formed through a plurality of holding tongue pieces 70, and through holes 50 are formed in the cylindrical wall portion 12 of the joint 3 on the same axis as the screw holes 51, and bolts 90 are formed through the through holes 50 and the through holes 50. Since the pile connection structure is characterized in that 63 and the screw hole 51 are screwed and fixed in a skewered manner, the pair of piles 1 can be easily connected via the joint 3, This eliminates the need to weld the piles together. Thereby, the connection work of the pile 1 can be simplified and the work time can be greatly shortened. In addition, it is not necessary to prepare electric power and equipment necessary for welding, and there is no risk of fire, so it is particularly suitable for construction of a basic structure of a general house. Also, connection work in rainy weather is possible. Moreover, since a pair of pile 1 is connected with the joint 3 and the volt | bolt 90 with a mechanical structure, connection strength can be made uniform and removal is also possible.

  Further, the present invention is a connection structure of a pile 1 and a blade 30 that connects the end 2 of the circular pile 1 and the blade 30, and is connected to the end 2 of the pile 1 from the end edge 60 in the longitudinal direction. A plurality of elongated slits 61 are formed, a plurality of through holes 63 are formed, and the blade 30 has a bottomed or bottomless short cylindrical connecting part 31 integrally or integrally with the connecting part. An annular groove 13 into which the end 2 of the pile 1 is inserted is formed on the upper surface of the bottom wall 32 or the inner flange 10 of the 31 and the end 2 of the pile 1 is inserted into the annular groove 13 A plurality of holding tongues 70 facing the inner peripheral surface 2 a of the end 2 of the pile 1 are provided upright from the inner flange 10, and the connecting piece 74 inserted into the elongated notch 61 is provided on the connecting part 31. The inner peripheral surface 11 is formed so as to connect the outer peripheral surfaces 70a of a predetermined number of the holding tongue pieces 70, and the screw holes 51 are provided through the remaining holding tongue pieces 70. Tube wall 1 of connecting part 31 on the same axis Since the through hole 50 is formed in 2 and the bolt 90 is screwed into the through hole 50, the through hole 63, and the screw hole 51 as a skewer and fixed, the pile and blade connection structure is provided. And the blade 30 can be easily connected, and there is no need to weld the pile and the blade as in the prior art. As a result, the connection work between the pile 1 and the blade 30 can be simplified and the working time can be greatly shortened. Moreover, since it is not necessary to prepare the electric power and equipment required for welding and there is no fear of fire, it is particularly suitable for basic construction of ordinary houses. In addition, work in rainy weather is also possible. Moreover, since the pile 1 and the blade | wing 30 are connected with the connection part 31 and the volt | bolt 90 with a mechanical structure, connection strength can be made uniform and removal is also possible. Also, by inserting the elongated notch 61 into the connecting piece 74, it serves to position in the circumferential direction, and the through hole 50 of the connecting part 31 and the through hole 63 of the pile 1 are on substantially the same axis. The screwing operation of the bolt 90 is easy. Further, by inserting the elongated cutout portions 61 into the plurality of connecting piece portions 74 of the connecting portion 31, the connecting piece portion 74 serves as a guide, and the axis of the connecting portion 31 and the axis of the pile 1 are substantially the same. Since it is on the axial center, the large-diameter pile 1 and the heavy pile 1 are not tilted diagonally, and the pile 1 can be easily inserted into the connecting portion 31. In addition, because it is fixed at multiple locations using bolts 90, it can be used for constructions that require greater rotational torque, such as excavation with large-diameter piles 1 and excavation of hard ground.

  In addition, the present invention is a connection structure of a pile 1 and a blade 30 that connects the end 2 of the tubular pile 1 and the blade 30, and is connected to the end 2 of the pile 1 from the outermost edge 60 in the longitudinal direction. The elongated notch 61 is formed, and a through hole 63 is formed at the end 2 opposite to the elongated notch 61 at 180 °, and the blade 30 has a bottomed or bottomless short cylindrical shape integrally or integrally. Further, an annular groove 13 into which the end 2 of the pile 1 is inserted is formed on the bottom wall 32 of the connecting portion 31 or the upper surface of the inner flange 10, and the end of the pile 1 A pair of holding tongue pieces 70 facing the inner peripheral surface 2a of the end portion 2 of the pile 1 in a state where 2 is inserted into the annular groove 13 are provided upright from the inner flange portion 10 at a symmetrical position of 180 °, A connecting piece portion 74 inserted into the elongated cutout portion 61 is formed so as to connect the inner peripheral surface 11 of the connecting portion 31 and the outer peripheral surface 70a of one holding tongue piece 70, and a screw hole is formed in the remaining holding tongue piece 70. 51 and the screw hole 51 A through hole 50 is formed in the cylindrical wall portion 12 of the connecting portion 31 on the same axis, and the bolt 90 is screwed into the through hole 50, the through hole 63, and the screw hole 51 as a skewered shape and fixed. Therefore, the pile 1 and the blade 30 can be easily connected, and there is no need to weld the pile and the blade as in the prior art. As a result, the connection work between the pile 1 and the blade 30 can be simplified and the working time can be greatly shortened. Moreover, since it is not necessary to prepare the electric power and equipment required for welding and there is no fear of fire, it is particularly suitable for basic construction of ordinary houses. In addition, work in rainy weather is also possible. Moreover, since the pile 1 and the blade | wing 30 are connected with the connection part 31 and the volt | bolt 90 with a mechanical structure, connection strength can be made uniform and removal is also possible. Further, by inserting the elongated cutout portion 61 into the connecting piece portion 74, it plays a role of circumferential positioning, and the through hole 50 of the connecting portion 31 and the through hole 63 of the pile 1 can be on substantially the same axis. The screwing operation of the bolt 90 is easy. In addition, by making the elongated cutout portion 61 to be inserted into the connecting piece portion 74 of the connecting portion 31 in one place, the axis of the connecting portion 31 and the axis of the pile 1 can be easily and quickly on substantially the same axis. In addition, since the bolt 90 is screwed in one place, the connection work time is shortened and the work efficiency is increased. Therefore, it is possible to cope with construction where a large number of piles are buried, nighttime where time is limited, and emergency construction. Further, since only two holding tongue pieces 70 are required, the connecting portion 31 can be reduced in size and weight and can be manufactured at low cost. Moreover, since the processing area to the edge part 2 of the pile 1 may be small, it can respond also to the thin pile 1 with a small surface area.

  Further, the present invention is a connection structure of a pile 1 and a blade 30 that connects the end 2 of the circular pile 1 and the blade 30, and is connected to the end 2 of the pile 1 from the end edge 60 in the longitudinal direction. A plurality of elongated cutouts 61 are formed, and a lateral cutout 62 is formed in the circumferential direction from the side edge 61a of the elongated cutout 61, and the blades 30 are bottomed or bottomless integrally or integrally. An annular concave groove 13 into which the end portion 2 of the pile 1 is inserted is formed on the bottom wall 32 of the connecting portion 31 or the upper surface of the inner flange portion 10. A plurality of holding tongue pieces 70 facing the inner peripheral surface 2a of the end portion 2 of the pile 1 in a state where the end portion 2 of the pile 1 is inserted into the annular groove 13 are provided in an upright shape from the inner flange portion 10, The connecting piece portion 74 inserted into the portion 61 is formed so as to connect the inner peripheral surface 11 of the connecting portion 31 and the outer peripheral surface 70a of the plurality of holding tongue pieces 70, and the screw holes 51 are provided therethrough. Connecting part 3 on the same axis as hole 51 A through-hole 50 is formed in one cylindrical wall portion 12, and a bolt 90 is screwed into a through-hole 50, a lateral notch 62, and a screw hole 51 as a skewered shape, and is fixed. Since it is a connection structure, the pile 1 and the blade | wing 30 can be connected easily, and it becomes unnecessary to weld a pile and a blade | wing conventionally. As a result, the connection work between the pile 1 and the blade 30 can be simplified and the working time can be greatly shortened. Moreover, since it is not necessary to prepare the electric power and equipment required for welding and there is no fear of fire, it is particularly suitable for basic construction of ordinary houses. In addition, work in rainy weather is also possible. Moreover, since the pile 1 and the blade | wing 30 are connected with the connection part 31 and the volt | bolt 90 with a mechanical structure, connection strength can be made uniform and removal is also possible. Also, by inserting the elongated notch 61 into the connecting piece 74, it plays a role of circumferential positioning, and the bolt 90 inserted from the through hole 50 of the connecting part 31 can penetrate into the lateral notch 62 of the pile 1 Since the position can be determined, the screwing operation is easy. Further, by inserting the elongated cutout portions 61 into the plurality of connecting piece portions 74 of the connecting portion 31, the connecting piece portion 74 serves as a guide, and the axis of the joint 3 and the axis of the pile 1 have substantially the same axis. Since it becomes on the heart, the pile 1 can be easily inserted into the joint 3. In addition, since the elongated cutout portion 61 and the horizontal cutout portion 62 are formed in one shape, the end portion 2 of the pile 1 can be efficiently processed because it can be formed in one step.

  Further, the present invention is a connection structure of a pile 1 and a blade 30 for connecting the end 2 of the tubular pile 1 and the blade 30, and a plurality of through holes 63 are formed in the end 2 of the pile 1, The blade 30 has a bottomed or non-bottomed short cylindrical connecting part 31 integrally or integrally. Further, the end 2 of the pile 1 is formed on the bottom wall 32 of the connecting part 31 or the upper surface of the inner flange part 10. A plurality of holding tongues facing the inner peripheral surface 2a of the end portion 2 of the pile 1 in a state where the annular groove 13 to be inserted is formed and the end portion 2 of the pile 1 is inserted into the annular groove 13 70 is provided upright from the inner flange 10, screw holes 51 are penetrated through the plurality of holding tongues 70, and the through holes 50 are formed in the cylindrical wall portion 12 of the connecting portion 31 on the same axis as the screw holes 51. This is a pile-blade connection structure characterized in that the bolt 90 is screwed into the through-hole 50, the through-hole 63 and the screw hole 51 as a skewer and fixed, so that the pile 1 and the blade 30 can be easily Can be connected to the piles and feathers as conventional No need to weld roots. As a result, the connection work between the pile 1 and the blade 30 can be simplified and the working time can be greatly shortened. Moreover, since it is not necessary to prepare the electric power and equipment required for welding and there is no fear of fire, it is particularly suitable for basic construction of ordinary houses. In addition, work in rainy weather is also possible. Moreover, since the pile 1 and the blade | wing 30 are connected with the connection part 31 and the volt | bolt 90 with a mechanical structure, it can make connection strength uniform and can also be removed.

It is a partial cross section side view of one Embodiment which shows a use condition. It is an expanded view which shows embodiment. It is principal part sectional drawing which shows 1st Embodiment. It is principal part sectional drawing which shows 2nd Embodiment. It is principal part sectional drawing which shows 3rd Embodiment. It is principal part sectional drawing which shows 4th Embodiment. FIG. FIG. FIG. FIG. It is a general view which shows 5th Embodiment, (a) is a front view, (b) is side part principal part sectional drawing. It is a general view which shows 6th Embodiment, (a) is a front view, (b) is side part principal part sectional drawing. It is a general view which shows 7th Embodiment, (a) is a front view, (b) is side part principal part sectional drawing. It is a general view which shows 8th Embodiment, (a) is a front view, (b) is side part principal part sectional drawing. FIG. FIG. FIG. FIG. It is an operation explanatory view. It is an operation explanatory view. It is a principal part expanded sectional view.

Explanation of symbols

1 Pile 2 End 2a Inner peripheral surface 3 Joint
10 Inner buttock
11 Inner peripheral surface
12 Tube wall
13 Annular groove
30 feathers
31 Connecting part
32 Bottom wall
50 Through hole
51 Screw hole
60 edge
61 Slender notch
61a Side edge
62 Horizontal cutout
63 Through-hole
70 Holding tongue
70a outer peripheral surface
74 Connection piece
90 volts

Claims (8)

A connection structure for connecting the ends (2) of two circular tubular piles (1) to each other with a short tubular joint (3),
In the end (2) of the pile (1), a plurality of elongated notches (61) are formed in the longitudinal direction from the outermost edge (60), and a plurality of through holes (63) are formed,
Furthermore, the joint (3) has an inner flange part (10) in the axial center intermediate part, and the inner recess part (10) is an annular recess into which the end (2) of the pile (1) is inserted. The inner circumference of the end (2) of the pile (1) in a state where a groove (13) is formed and the end (2) of the pile (1) is inserted into the annular concave groove (13) A plurality of holding tongues (70) facing the surface (2a) are provided upright from the inner flange (10), and the connecting piece (74) inserted into the elongated notch (61) is connected to the joint ( 3) and an inner peripheral surface (70a) of a predetermined number of the holding tongue pieces (70) are connected to each other, and a screw is attached to the remaining holding tongue pieces (70). A through hole (50) is formed in the cylindrical wall portion (12) of the joint (3) on the same axis as the screw hole (51). The through hole (50), the through hole (63), and the screw hole (51) Connection structure pile by screwing a skewer 挿状, characterized by sticking. A connection structure for connecting the ends (2) of two circular tubular piles (1) to each other with a short tubular joint (3),
In the end (2) of the pile (1), an elongated notch (61) is formed in the longitudinal direction from the outermost edge (60), and is 180 ° opposite to the elongated notch (61). A through hole (63) is formed in the end (2),
Further, the joint (3) has an inner flange portion (10) at an axially central portion, and an annular portion into which the end portion (2) of the pile (1) is inserted into the inner flange portion (10). Inside the end (2) of the pile (1) in a state in which the groove (13) is formed and the end (2) of the pile (1) is inserted into the annular groove (13) A pair of holding tongues (70) facing the peripheral surface (2a) are provided upright from the inner flange (10) at symmetrical positions of 180 °, and are connected pieces inserted into the elongated cutout (61). The part (74) is formed so as to connect the inner peripheral surface (11) of the joint (3) and the outer peripheral surface (70a) of one holding tongue piece (70), and the remaining holding tongue piece (70). A through hole (50) is formed in the cylindrical wall portion (12) of the joint (3) on the same axis, and the screw hole (51) is formed through the screw hole (51). ) The through hole (50), the through hole (63) and the screw hole (51) Connection structure pile by screwing a skewer 挿状, characterized by sticking. A connection structure for connecting the ends (2) of two circular tubular piles (1) to each other with a short tubular joint (3),
A plurality of elongated notches (61) are formed in the longitudinal direction from the outermost edge (60) at the end (2) of the pile (1), and the side edges of the elongated notches (61) ( 61a) form a transverse notch (62) in the circumferential direction,
Further, the joint (3) has an inner flange portion (10) at an axially central portion, and an annular portion into which the end portion (2) of the pile (1) is inserted into the inner flange portion (10). Inside the end (2) of the pile (1) in a state in which the groove (13) is formed and the end (2) of the pile (1) is inserted into the annular groove (13) A plurality of holding tongues (70) facing the peripheral surface (2a) are provided upright from the inner flange (10), and the connecting piece (74) to be inserted into the elongated notch (61) The inner peripheral surface (11) of the joint (3) and the outer peripheral surface (70a) of the plurality of holding tongue pieces (70) are connected to each other, the screw hole (51) is penetrated, and the screw A through hole (50) is formed in the cylindrical wall portion (12) of the joint (3) on the same axis as the hole (51), and the bolt (90) is connected to the through hole (50) and the lateral notch (62 ) And the above screw hole (51) as a skewer and fixed. Pile connection structure characterized by. A connection structure for connecting the ends (2) of two circular tubular piles (1) to each other with a short tubular joint (3),
A plurality of through holes (63) are formed in the end (2) of the pile (1),
Further, the joint (3) has an inner flange portion (10) at an axially central portion, and an annular portion into which the end portion (2) of the pile (1) is inserted into the inner flange portion (10). Inside the end (2) of the pile (1) in a state in which the groove (13) is formed and the end (2) of the pile (1) is inserted into the annular groove (13) A plurality of holding tongues (70) facing the peripheral surface (2a) are provided upright from the inner flange (10), and screw holes (51) are provided through the plurality of holding tongues (70), A through hole (50) is formed in the cylindrical wall portion (12) of the joint (3) on the same axis as the screw hole (51), and a bolt (90) is connected to the through hole (50) and the through hole. Pile connection structure characterized by being screwed into the hole (63) and the screw hole (51) as a skewer and fixed. A connection structure of a pile (1) and a blade (30) for connecting an end (2) of the circular pile (1) and a blade (30),
In the end (2) of the pile (1), a plurality of elongated notches (61) are formed in the longitudinal direction from the outermost edge (60), and a plurality of through holes (63) are formed,
The blade (30) has a short cylindrical connection part (31) having a bottom or no bottom integrally or integrally, and further, a bottom wall (32) or an inner collar part (31) of the connection part (31). An annular groove (13) into which the end (2) of the pile (1) is inserted is formed on the upper surface of 10), and the end (2) of the pile (1) is formed into the annular groove (13). A plurality of holding tongues (70) facing the inner peripheral surface (2a) of the end (2) of the pile (1) in the state of being inserted into the pile (1) are provided upright from the inner flange (10). The connecting piece (74) to be inserted into the elongated cutout (61) is connected to the inner peripheral surface (11) of the connecting portion (31) and the outer peripheral surface of a predetermined number of the holding tongue pieces (70). (70a) are connected to each other, and a screw hole (51) is formed through the remaining holding tongue piece (70), and the connecting portion is arranged on the same axis as the screw hole (51). A through hole (50) is formed in the cylindrical wall (12) of (31) Preparative (90) and screwed to the skewer 挿状 the through hole (50) and the through-hole (63) and the screw hole (51), the connection structure of piles and the blade, characterized in that the anchoring. A connection structure of a pile (1) and a blade (30) for connecting an end (2) of the circular pile (1) and a blade (30),
In the end (2) of the pile (1), an elongated notch (61) is formed in the longitudinal direction from the outermost edge (60), and is 180 ° opposite to the elongated notch (61). A through hole (63) is formed in the end (2),
The blade (30) has a short cylindrical connection part (31) having a bottom or no bottom integrally or integrally, and further, a bottom wall (32) or an inner collar part (31) of the connection part (31). An annular groove (13) into which the end (2) of the pile (1) is inserted is formed on the upper surface of 10), and the end (2) of the pile (1) is formed into the annular groove (13). The pair of holding tongues (70) facing the inner peripheral surface (2a) of the end (2) of the pile (1) in a state of being inserted into the inner flange (10) ) And a connecting piece portion (74) inserted into the elongated notch portion (61) is connected to the inner peripheral surface (11) of the connecting portion (31) and one holding tongue piece (70). The outer peripheral surface (70a) is formed to be connected, the screw hole (51) is penetrated through the remaining holding tongue piece (70), and the screw hole (51) is connected to the connecting portion on the same axis. A through hole (50) is formed in the cylindrical wall (12) of (31) Preparative (90) and screwed to the skewer 挿状 the through hole (50) and the through-hole (63) and the screw hole (51), the connection structure of piles and the blade, characterized in that the anchoring. A connection structure of a pile (1) and a blade (30) for connecting an end (2) of the circular pile (1) and a blade (30),
A plurality of elongated notches (61) are formed in the longitudinal direction from the outermost edge (60) at the end (2) of the pile (1), and the side edges of the elongated notches (61) ( 61a) form a transverse notch (62) in the circumferential direction,
The blade (30) has a short cylindrical connection part (31) having a bottom or no bottom integrally or integrally, and further, a bottom wall (32) or an inner collar part (31) of the connection part (31). An annular groove (13) into which the end (2) of the pile (1) is inserted is formed on the upper surface of 10), and the end (2) of the pile (1) is formed into the annular groove (13). A plurality of holding tongues (70) facing the inner peripheral surface (2a) of the end (2) of the pile (1) in the state of being inserted into the pile (1) are provided upright from the inner flange (10). The connecting piece portion (74) inserted into the elongated cutout portion (61) is connected to the inner peripheral surface (11) of the connecting portion (31) and the outer peripheral surface (70a) of the plurality of holding tongue pieces (70). It forms so that it may connect, and a screw hole (51) is penetrated, and a through-hole (50) is formed in the cylindrical wall part (12) of the said connection part (31) on the same axial center as this screw hole (51). ) And the bolt (90) with the through hole (50) and the above horizontal notch (62) and to said threaded hole (51) and screwed as skewers 挿状 connection structure of piles and the blade, characterized in that the anchoring. A connection structure of a pile (1) and a blade (30) for connecting an end (2) of the circular pile (1) and a blade (30),
A plurality of through holes (63) are formed in the end (2) of the pile (1),
The blade (30) has a short cylindrical connection part (31) having a bottom or no bottom integrally or integrally, and further, a bottom wall (32) or an inner collar part (31) of the connection part (31). An annular groove (13) into which the end (2) of the pile (1) is inserted is formed on the upper surface of 10), and the end (2) of the pile (1) is formed into the annular groove (13). A plurality of holding tongues (70) facing the inner peripheral surface (2a) of the end (2) of the pile (1) in the state of being inserted into the pile (1) are provided upright from the inner flange (10). The screw holes (51) are penetrated through the plurality of holding tongue pieces (70), and penetrate the cylindrical wall portion (12) of the connecting portion (31) on the same axis as the screw holes (51). A hole (50) is formed, and the bolt (90) is screwed into the through hole (50), the through hole (63), and the screw hole (51) as a skewer and fixed. Pile and blade connection structure.

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