JP2017071897A - Joining method and joining material for sheath pipe and pile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joining method for a sheath pipe and a pile that may be applied when a core of the sheath pipe and a core of a foundation pile are deviated, or when the foundation pipe is slanted.SOLUTION: A method is for fitting and joining a sheath pipe located at a lower part of a structure and a foundation pile having an outer diameter smaller than an inner diameter of the sheath pipe. A winding sheet is wrapped around from a position above a bottom end of the sheath pipe to an outer periphery of the foundation pile, and the winding sheet is tightened and fixed by a fastening material from around. A prescribed interval between a plurality of vertical belts provided vertically on the outer periphery of the winding sheet is narrowed by a gathering material provided between the adjacent vertical belts at a position between the bottom end of the sheath pipe and a top end of the foundation pile, on the outer periphery of the winding sheet. The outer periphery of the foundation pile is fixed by tightening the tightening material from around at a position near a bottom edge of the winding sheet, and a filler is filled in a space surrounded by the winding sheet, the sheath pipe, and the foundation pile.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a joining method and a joining member for an exterior pipe and a foundation pile located at the lower part of a structure when the structure is constructed.

When constructing a structure on water, it is common to use a jacket structure.
Here, the jacket structure 1 is a three-dimensional steel pipe truss structure obtained by combining oblique members and horizontal members arranged between the vertically inserted outer tube 11 groups (FIG. 9).
The jacket structure 1 is manufactured in a factory and joined to a foundation pile 2 made of a steel pipe or the like installed on the seabed, and a floating structure is constructed based on the jacket structure 1.
A method for joining the jacket structure 1 and the foundation pile 2 at this time is disclosed in Patent Document 1.

In this method, first, an anti-slip material is welded and attached in a circumferential direction at a position above the lower end of the outer tube 11 of the jacket structure 1.
Then, the outer periphery of the foundation pile 2 is surrounded by the wrapping sheet from a position above the anti-slip material, and the wrapping sheet is fastened and fixed from the outer periphery by a band-shaped fixing material at a position above the anti-slip material.
On the other hand, in the vicinity of the lower edge of the wound sheet, the outer periphery of the foundation pile 2 is fixed by tightening the wound sheet from the outer periphery with a band-shaped tightening material.
In this way, the upper portion of the wound sheet is fixed to the outer insertion tube a and the lower portion is fixed to the foundation pile 2, and in that state, the filler is filled between the outer insertion tube 11 and the foundation pile.

Also, in recent years, in order to improve the seismic performance of existing floating structures, after removing the floating structures, the foundation piles 2 are struck and the floating structure is constructed again based on the new jacket structure 1. Has been done.
At this time, in order to reduce environmental load, the existing foundation pile 2 is reused.

Japanese Patent No. 5210985

Some existing foundation piles 2 are not evenly spaced or inclined due to problems such as construction accuracy.
For this reason, when using these, the center-of-alignment with respect to the outer tube 11 of the jacket structure 1 arises, or it inserts with respect to the outer tube 11 diagonally.
The joining method of Patent Document 1 is adapted to a shape in which the outer insertion tube 11 and the foundation pile 2 are substantially concentric circles, and does not correspond to a large misalignment or an inclined foundation pile 2. For this reason, when winding a winding sheet around the foundation pile 2, a bias | bias and a wrinkle arise and there exists a possibility that the filler to inject | pour may leak.
The fastening material on the foundation pile 2 side is preferably fastened so as to be perpendicular to the pile axis, but when there is misalignment or inclination, the fastening material is inclined with respect to the foundation pile 2. If the filling material is injected at this time and an injection pressure is applied to the wound sheet, the cloth film of the wound sheet is pulled non-uniformly to cause a displacement of the fastening material, which may cause the filler to leak.
In addition, when the diameter of the outer insertion tube a is increased in order to cope with the oblique foundation pile 2, the injection pressure applied to the wound sheet is increased, but since only the cloth film is used, there is a limit to the pressure resistance. For this reason, even when the filler is injected up to a predetermined height, it is necessary to reduce the filling height in the first injection work in order to lower the injection pressure, and the injection work is performed in multiple steps. There is a need.

1st invention of this application for solving the above subjects fits and joins an external insertion tube located in the lower part of a structure, and a foundation pile with an outer diameter smaller than the internal diameter of the external insertion tube. A method for joining an outer tube and a foundation pile, wherein the outer tube is surrounded by a wrapping sheet from a position above the lower end of the outer tube to the outer periphery of the foundation pile, and the outer tube is placed at a position above the lower end of the outer tube. The outer periphery of the intubation is fixed by tightening the winding sheet from the outer periphery with a fixing material, and a plurality of vertical belts provided at predetermined intervals over the upper and lower sides of the outer periphery of the winding sheet are arranged on the outer periphery of the winding sheet. At the position between the lower end of the extrapolation tube on the circumference and the upper end of the foundation pile, the outer periphery of the foundation pile is squeezed with a drawing material provided between the adjacent vertical belts, near the lower edge of the winding sheet. Tighten the fastening material The outer tube and the foundation are characterized in that the space is surrounded by the winding sheet, the outer tube, and the foundation pile, and the filler is filled with the wound sheet. Provide a method for joining piles.
According to a second invention of the present application, in the joining method of the outer insertion tube and the foundation pile of the first invention, a plurality of stages of fastening material through holes through which the fastening material is inserted are provided across the height direction of the vertical belt, and the fastening material Between the outer tube and the foundation pile, wherein the fastening material is inserted through the through hole selected from a plurality of stages, and the fastening material is arranged and tightened so as to be substantially orthogonal to the foundation pile. Provide a method.
3rd invention of this application is the outer periphery of the said winding sheet | seat in the joining method of the extrapolation pipe and foundation pile of 1st invention or 2nd invention, Comprising: The position between the lower end of the said extrapolation pipe and the upper end of the said foundation pile is set. The present invention provides a method for joining an externally inserted tube and a foundation pile, characterized by being surrounded by a tension material that suppresses swelling of the wound sheet when the filler is filled.
4th invention of this application is a joining member used when fitting the extrapolation pipe located in the lower part of a structure to a foundation pile with an outer diameter smaller than the inner diameter of the said extrapolation pipe, Surrounding the outer periphery of the foundation pile in the vicinity of the lower end of the intubation to the outer periphery of the foundation pile, the fixing material positioned above the lower end of the outer intubation, and the lower edge of the winding sheet A fastening material positioned at a position, a plurality of vertical belts provided at predetermined intervals over the upper and lower sides of the outer periphery of the winding sheet, a lower end of the extrapolation tube and an upper end of the foundation pile on the circumference of the outer periphery of the winding sheet And a plurality of squeezing members that squeeze the interval between the adjacent vertical belts at a position between them.
According to a fifth aspect of the present invention, there is provided the joining member according to the fourth aspect, wherein the joining member includes a fastening material through hole provided in a plurality of stages over the height direction of the longitudinal belt.
6th invention of this application provides the joining member characterized by having the tension | tensile_strength material shorter than the outer periphery of the said winding sheet in the outer periphery of the said winding sheet in the joining member of 4th invention or 5th invention.

Since the joining method and joining member of the extrapolation tube and foundation pile of the present invention are as described above, the following effects can be obtained.
<1> The center position of the wound sheet can be moved corresponding to the misalignment of the foundation pile by previously narrowing the interval between the vertical belts with the drawing material.
<2> Even if it is a misalignment or an inclined foundation pile, it can be tightened by arranging the fastening material substantially orthogonally.
<3> Since the wound sheet whose center position has been moved is fastened with the fastening material arranged substantially orthogonal to the foundation pile, the filler does not leak.
<4> Since the injection pressure of the filler is received not only by the cloth film of the wound sheet but also by the longitudinal belt arranged in the longitudinal direction and the tension material arranged in the transverse direction, the filler can be injected at once to a high position. .
<5> By appropriately increasing the number of vertical belts, the strength of the joining member can be arbitrarily selected.

Explanatory drawing of the state which attached the joining member of the present invention to the external intubation pipe and the foundation pile Perspective view of joining member Exploded view of joining member Explanatory drawing of the usage state of the joining member when the core is displaced Explanatory drawing of the state where the winding sheet is pulled inward by the pulling belt Illustration of the backing material of the joining member Explanatory drawing of the Example of the external intubation which wound the winding sheet | seat Explanatory drawing of the state where the winding sheet is opened Illustration of joining method for general jacket structure and pile

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

<1> Extratubation and foundation pile.
The jacket structure 1 is a three-dimensional steel pipe truss structure in which an extrapolation pipe 11 that is a vertical member made of a steel pipe is coupled with a diagonal member or a horizontal member (FIG. 9).
On the other hand, the foundation pile 2 used as a foundation is configured by placing a steel pipe having an outer diameter smaller than the inner diameter of the outer insertion tube 11 on the bottom of the water.
And the extrapolation tube 11 which comprises the jacket structure 1 is fitted to the head of the foundation pile 2, the gap between the outer insertion tube 11 and the foundation pile 2 is filled with a filler made of mortar, and the jacket structure 1 and the foundation pile 2 are integrated.
On the basis of the jacket structure 1, a floating structure is constructed on top of the jacket structure 1.

<2> Anti-slip material.
An anti-slip material 12 is attached to the outer periphery of the outer insertion tube 11 at a position above the lower end so as to make a round in the circumferential direction (FIGS. 1 and 2).
The anti-slip material 12 can be used by welding a reinforcing bar, for example, but a material other than the reinforcing bar or a discontinuous material can also be used.
Since the anti-slip material 12 is attached to the outer periphery of the outer tube 11 in the circumferential direction, when the wound sheet 3 is attached to the outer tube 11, which will be described later, the wound sheet 3 is caused by the injection pressure and weight of the filler. It can prevent sliding down.

<3> Wound sheet.
The wound sheet 3 is a rectangular sheet in the unfolded state (FIGS. 2 and 3).
This winding sheet 3 can surround the range from the position above the non-slip material 12 of the outer tube 11 of the jacket to the periphery of the foundation pile 2 in a cylindrical shape.
For example, a polyester sheet is used as the material.
Since the wrapping sheet 3 becomes a mold at the time of filling the filler, it is highly impermeable and preferably has a longitudinal / lateral strength of 300 kg / cm 2 or more.
Fasteners 31 are attached to both rectangular edges of the wound sheet 3, that is, to the short sides of the rectangle. The fastener 31 joins the short sides of the wound sheet 3, and the watertightness and strength are preferably equal to or higher than those of the wound sheet 3.
Further, winding belts 32 are attached to the upper edge of the winding sheet 3 at a plurality of locations.
This is for winding up the winding sheet 3 before fitting the outer insertion tube 11 to the outer periphery of the foundation pile 2, as will be described later, and any string-like material can be used.

<4> Vertical belt.
A plurality of vertical belts 4 extending vertically are provided on the outer periphery of the wound sheet 3 at a predetermined interval.
The vertical belt 4 is made of, for example, polyester having a higher strength than the winding sheet 3 and is integrated with the winding sheet 3 by sewing or the like.
Since the injection pressure and load acting on the cloth film of the wound sheet 3 are supported by the vertical belt 4, the strength of the wound sheet 3 can be appropriately adjusted depending on the number of the vertical belts 4 arranged.

<5> Fixing material.
The fixing material 5 is attached in parallel with the upper edge over the entire length of the winding sheet 3 at a position near the upper edge of the rectangular winding sheet 3.
The fixing material 5 is passed through a fixing material through hole 41 attached at the same height of the vertical belt 4 to prevent vertical displacement.
Since the fixing material 5 receives almost the entire weight of the filler to be injected, a large fastening force is required. Therefore, a steel band, a wire, a high-strength fiber belt, etc. are used, and an end is clamped and fixed with a special clamp.
The fixing material 5 may be a plurality of windings or a plurality of windings to enhance the fixing and fixing effect of the wound sheet 3. In the case of multi-stage winding, it is preferable that the anti-slip material 12 of the outer insertion tube 11 is similarly multi-stage.

<6> Drawing material.
In the wound sheet 3, a plurality of (for example, nine divisions) squeezing materials 6 are provided on the circumference at a position between the lower end of the outer insertion tube 11 and the upper end of the foundation pile 2. It is preferable to arrange the vertical belt 4 according to the number of divisions.
The squeezing material 5 is a long member that is attached to the adjacent vertical belts 4 and provided with a buckle 61, and the distance between the vertical belts 4 can be reduced by pulling the squeezing material 6 coming out of the buckle 61. . At this time, by providing the stopper 62 at a position corresponding to the diaphragm width, the diaphragm 6 coming out of the buckle 61 is pulled and the buckle 61 is brought into contact with the stopper 62 to easily reach a predetermined diaphragm amount. Can be squeezed.

<6.1> A drawing amount of the drawing material.
The squeezing with the squeezing material 6 is performed by adjusting the interval between the vertical belts 4 provided on the outer periphery of the wrapping sheet 3 so as to correspond to the misalignment between the wrapping sheet 3 and the foundation pile 2 at the attachment position of the squeezing material 6. The center position of 3 is moved to shape the joining member. The squeezing material 6 at the position where the misalignment is large is squeezed large, and the squeezing material 6 at the position where the misalignment is small is squeezed small.
Since the aperture amount of the aperture 6 can be set as appropriate depending on the position of the stopper 62, it can cope with various misalignment states.

<7> Fastening material.
The fastening material 7 is attached at a position close to the lower edge of the bottom part of the rectangular winding sheet 3.
The fastening material 7 is passed through the fastening material through hole 42 attached to the vertical belt 4 to determine the height.
Since the fastening material 7 supports the injected filler from below, a large fastening force is required.
A steel band, a wire, a high-strength fiber belt, or the like is used as the fastening material 7, and the end is fastened and fixed with a special fastening tool.

<7.1> Height of fastening material.
When the core of the outer insertion tube 11 and the core of the foundation pile 2 are misaligned, the distance from the lower end of the wound sheet 3 on the surface orthogonal to the foundation pile 2 is different (FIG. 4).
For this reason, a plurality of fastening material through holes 42 through which the fastening material 7 is passed are provided in the height direction, and the height through which the fastening material 7 is passed is appropriately selected from the plurality of fastening material through holes 42 to thereby provide the fastening material 7. The distance from the lower end part of the winding sheet 1 can be changed, and the fastening material 7 can be arranged substantially orthogonal to the foundation pile 2.

<8> Tension material.
In the wound sheet 3, a tension material 8 is provided at a position between the lower end of the outer tube 11 and the fastening material 7.
The tension material 8 is passed through a tension material through hole 43 attached to the vertical belt 4 to determine the height.
The tension member 8 is made of a high strength fiber belt.
When the filler is injected, the winding sheet 3 between the lower end of the outer insertion tube 11 and the fastening material 7 swells.
By providing the tension member 8 at this height, the winding sheet 3 receives the hoop tension of the filler and suppresses the swelling, thereby reducing the tensile force applied to the surface of the winding sheet 3 and reducing the amount of the filler. .
Since the tension member 8 suppresses the swelling of the wound sheet 3, the tension member 8 surrounds the wound sheet 3 with a length shorter than the outer periphery of the wound sheet 3.
If the squeezing material 6 is arranged at this position, the squeezing material 6 can similarly receive the hoop tension of the filler.
The tension member 8 may be provided in a single stage or a plurality of stages. Further, similarly to the fastening material 7, a plurality of tension material through holes 43 may be provided in the height direction, and the tension material 8 may be horizontally selected by appropriately selecting the tension material through holes 43.

<9> Pulling belt.
At the lower edge of the winding sheet 3, a drawing belt 9 is provided in the middle of the adjacent vertical belts 2.
When the distance between the vertical belts 2 is narrowed by the squeezing material 6, the wrapping sheet 3 in the squeezed portion is left at the portion where the squeezing amount is large. There is a risk of mortar leaking from that part.
Therefore, after squeezing with the squeezing material 6, the winding sheet 3 can be uniformly tightened by drawing the winding sheet 3 into one side with the drawing belt 9 and folding it (FIG. 5). At this time, if the winding sheet 3 and the squeezing material 6 are stitched at the position of the stopper 62 corresponding to the squeezing amount, the wrapping sheet 3 can be folded back and pulled at the position of the stopper 62.

<10> backing material.
A backing material 10 is attached to the back surface of the wound sheet 3 (FIG. 2).
The backing material 10 is made of nonwoven fabric or sponge.
The backing material 10 includes an upper backing material 101 attached to the upper end side of the winding sheet 3 and a lower backing material 102 attached to the lower end side.

<10.1> Upper backing material.
The upper backing material 101 is attached over the entire width of the back surface of the wound sheet 3 in the range from the fastening position of the fixing material 5 to the lower end (5 to 10 cm) of the outer insertion tube 11.
In the fastening position of the fixing material 5, leakage of the filler from the gap between the wound sheet 3 and the outer insertion tube 11 is prevented.
Further, at the lower end of the outer insertion tube 11, the edge of the lower end of the outer tube 11 and the winding sheet 3 are in direct contact with each other, and the winding sheet 3 is prevented from being slid or broken (FIG. 6).

<10.2> Lower backing material.
The lower backing material 102 is attached over the entire back side width of the fastening position of the fastening material 7.
Since the winding sheet 3 is squeezed by the squeezing material 6, wrinkles are formed at the position of the fastening material 6. Therefore, in order to prevent the filler from leaking out from the wrinkled portion, the lower backing material 102 is provided between the wound sheet 3 and the outer insertion tube 11.
The lower backing material 102 may be longer than the full width of the back surface of the wound sheet 3 and may be provided with the extra length portion 103.
By providing the surplus length portion 103, the lower backing material 102 is doubled in the surplus length portion 103 when the winding sheet 3 is wound (FIG. 6).
Although a tool is used for fastening the fastening material 6, it is possible to prevent the filler from leaking out when the tool comes into contact with the winding sheet 3 and the surface of the winding sheet 3 is broken.

<11> Attaching the winding sheet.
The winding sheet 3 described above is attached to the outer periphery of the outer intubation tube 11 on land.
For this purpose, first, the wrapping sheet 3 is wound around the outer periphery of the outer insertion tube 11 up to above the non-slip material 12 protruding from the outer insertion tube.
The attachment position of the winding sheet 3 is such a position that the fixing material 5 of the winding sheet 3 comes just above the anti-slip material 12.
Further, by attaching the attachment cord 33 along the upper end side of the winding sheet 3, the winding sheet 1 can be temporarily fixed to the outer tube together with the joining of the upper end of the fastener 31 before fixing by the fixing material 4. .
Thereafter, the fixing material 5 is inserted into the fixing material through hole 41 and is tensioned and fixed with a dedicated tool, so that the upper edge of the wound sheet 3 is positioned above the anti-slip material 12 and the outer periphery of the outer tube 11. Can be securely attached.
The fastening material 7 is inserted into the fastening material through hole 42 and wound loosely around the skirt portion of the winding sheet 3 located on the outer periphery of the outer insertion tube 11 in a cylindrical shape. The fastening material through holes 42 are provided in a plurality of stages along the vertical belt 4, and the fastening material through holes 42 having a preset height are used in accordance with the misalignment and inclination of the foundation pile 2. When the fastening material 7 is a drawing wire, the ends of the fastening material 7 are loosely connected with a temporary fixing rope.
Similarly to the fastening material 7, the tension material 8 is inserted into the tension material through hole 43 and wound loosely.

<12> Winding up the wound sheet.
In the above state, the wrapping sheet 3 is wound around the lower end of the outer insertion tube 11 in a tubular shape and remains hanging in the tubular shape.
Therefore, there is a possibility that the winding sheet 3 is caught and broken when the outer insertion tube 11 is fitted to the foundation pile 2.
Therefore, the winding sheet 3 is once wound up and folded from below.
Then, the wound sheet 3 folded in a bag shape is bound by a winding belt 32 attached to the upper edge thereof.
As a result, the wound sheet 3 can be wound around the outer periphery of the outer tube 11 in a headband shape and fixed (FIG. 7).
The above work is work on land.

<13> Installation of the jacket.
Next, a method of surrounding the outer tube 11 and the foundation pile 2 with the winding sheet 3 will be described.
As described above, the foundation pile 2 is first installed on the bottom of the water. The foundation pile 2 may reuse an existing pile.
Thereafter, the jacket structure 1 is suspended by a crane or the like, and the hollow outer insertion tube 11 constituting the jacket structure 1 is fitted to the head of the foundation pile 2 having an outer diameter smaller than the inner diameter of the outer insertion tube 11. At a position above the lower end of the outer tube 11, a winding sheet 3 folded in a band shape is fixed and attached by a winding belt 32.

<14> Release of the winding sheet.
The restraint of the winding belt 32 is released in a state where the lower end of the outer insertion tube 11 is located on the outer periphery of the foundation pile 2.
Then, the winding sheet 3 naturally hangs down by the weight of the fastening material 7 and surrounds the periphery of the foundation pile 2 in a cylindrical shape (FIG. 8).

<15> Winding of the sheet.
The fastener 31 is pulled down by the diver to join both ends of the wound sheet 3, and the outer periphery of the outer insertion tube 11 and the foundation pile 2 is surrounded by the wound sheet 3.
Next, the squeezing material 6 coming out of the buckle 61 is pulled to squeeze the buckle 61 to a position where it abuts against the stopper 62, and both ends of the tension material 8 are joined and the tension material 8 surrounds the periphery of the wound sheet 3. . Thereby, the wound sheet 3 is shaped into a form corresponding to the misalignment.
Thereafter, the lower end of the winding sheet 3 is drawn along one side of the foundation pile 2 with the draw belt 9 and folded.
Although these operations are underwater operations, all of them are operations that simply grab and move the fastener 31, the drawing material 6, the tension material 8, and the pulling belt 9 without using a tool. You can work reliably in the sea.
Then, the fastening material 7 turning around the hem of the winding sheet 3 is tensioned, and the winding sheet 7 is wound around the outer periphery of the foundation pile 2. When the fastening material 7 is a squeezing wire, a commercially available fastening tool such as a chain block is interposed between both ends of the squeezing wire, and the handle is reciprocated to tighten the fastening material 7 so that the winding sheet 3 The skirt is attached in a state where the outer periphery of the foundation pile 2 is tightened. Since it is a simple operation of simply reciprocating the handle of the tool, the operation can be performed reliably even in the sea where it is contaminated and has no visibility.
The squeezing member 6 and the tension member 8 may be inserted into the tightening material through hole 42 and the tension material through hole 43 and tightened after the winding sheet is opened in the sea.

<16> Filler injection.
A part of the outer tube 11 is provided with a filling port 13 for the filler 5 such as cement milk.
A filler is injected from the filling port 13 and cured.
As a result, the jacket structure 1 and the foundation pile 2 can be firmly integrated by filling the gap between the outer tube 11 and the foundation pile 2, which is completely surrounded by the winding sheet 3, with the filler. it can.
Since the injection pressure of the filler is received not only by the cloth film of the wound sheet 3 but also by the vertical belt 2 disposed in the longitudinal direction of the outer periphery of the wound sheet 3 and the tension material 8 disposed in the lateral direction, it must correspond to a high injection pressure. The filler can be injected up to a high position.

Although the present Example has described about the joining of the extrapolation pipe | tube 11 and the foundation pile 2 of the jacket structure 1, the joining method and joining member of this invention are the independent extrapolation pipe | tube which comprises the lower part of a water structure, The present invention can also be applied when joining a foundation pile.
Moreover, it is applicable not only in the sea but also in the case of joining pipes having different diameters such as an extrapolation pipe and a foundation pile in the air.

1: Jacket structure 11: Extrapolation tube 12: Non-slip material 13: Filling port 2: Foundation pile 3: Winding sheet 31: Fastener 32: Winding belt 33: Attachment string 4: Vertical belt 41: Fixing material through hole 42: Clamping material through-hole 43: Tension material through-hole 5: Fixing material 6: Drawing material 61: Buckle 62: Stopper 7: Clamping material 8: Tension material 9: Pulling belt 10: Backing material 101: Upper backing material 102: Lower part Backing material 103: extra length

Claims (6)

A method of joining an outer tube and a foundation pile, in which an outer tube located at the lower part of the structure and a foundation pile having an outer diameter smaller than the inner diameter of the outer tube are fitted and joined,
From the position above the lower end of the outer cannula to the outer periphery of the foundation pile, surrounded by a wrapping sheet,
At a position above the lower end of the outer tube, the outer periphery of the outer tube is fixed by fixing the winding sheet from the outer periphery with a fixing material,
The interval between the vertical belts provided at a predetermined interval across the upper and lower sides of the outer periphery of the wound sheet is a position between the lower end of the outer tube and the upper end of the foundation pile on the circumference of the outer periphery of the wound sheet. Drawing with a drawing material provided between the adjacent vertical belts,
In the vicinity of the lower edge of the winding sheet, the outer periphery of the foundation pile is fixed by tightening the winding sheet from the outer periphery by tightening a fastening material,
It is performed by filling a space surrounded by the winding sheet, the extrapolation tube and the foundation pile with a filler,
Joining method of extratubation and foundation pile. In the joining method of the extratubation tube and foundation pile according to claim 1,
A plurality of tightening material through holes for inserting the tightening material are provided over the height direction of the vertical belt,
The fastening material is inserted through the fastening material through hole selected from a plurality of stages, and the fastening material is arranged to be substantially orthogonal to the foundation pile and tightened.
Joining method of extratubation and foundation pile. In the joining method of the external intubation tube and foundation pile according to claim 1 or claim 2,
Surrounding the position of the outer periphery of the wound sheet between the lower end of the extrapolation tube and the upper end of the foundation pile with a tension material that suppresses the swelling of the wound sheet when the filler is filled. To
Joining method of extratubation and foundation pile. A joining member used when an extrapolation tube located at the lower part of a structure is fitted and joined to a foundation pile having an outer diameter smaller than the inner diameter of the extrapolation tube,
A wrapping sheet that surrounds from the position above the lower end of the outer cannula to the outer periphery of the foundation pile;
A fixing material located above the lower end of the outer tube;
In the vicinity of the lower edge of the winding sheet, a fastening material located at a position surrounding the outer periphery of the foundation pile,
A longitudinal belt provided at a predetermined interval across the upper and lower sides of the outer periphery of the wound sheet;
It consists of a plurality of squeezing materials that squeeze the interval between the adjacent vertical belts at a position between the lower end of the outer tube and the upper end of the foundation pile on the circumference of the outer periphery of the wound sheet.
Joining member. The joining member according to claim 4,
It has a fastening material through hole provided in a plurality of stages over the height direction of the vertical belt,
Joining member. In the joining member according to claim 4 or 5,
The outer periphery of the wound sheet has a tension material shorter than the outer periphery of the wound sheet,
Joining member.

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