JP2017002671A - Joint structure, joint, and installation method for joint structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint structure, a joint, and an installation method for the joint structure that resolve a problem with grout joining.SOLUTION: A joint structure 200 connects a flange 40 of a pile head part of a pile 400 with a tower flange 50 of a bottom tower 500, with a bolt 90 and a nut 91. The joint structure includes: a first joint member 110a having a first upper flange part 30a inclined by a joint member inclination angle α to a first lower flange part 10a connected to the flange 40 of the pile head part; and a second joint member 110b having a second upper flange part 30b inclined by the joint member inclination angle α to a second lower flange part 10b connected to the first upper flange part 30a. A first thickest phase (phase A) of the first joint member 110a and a second thickest phase (phase B) of the second joint member 110b are positioned symmetrically to each other on both sides of a virtual line in a pile inclination direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a joint structure, a joint, and a method for constructing a pile structure, in particular, a joint structure in which a pile standing on a ground and an upper structure are connected, a joint forming the joint structure, and a connection by the joint It is related with the construction method of the pile structure to be done.

  In recent years, wind power generation has attracted attention as a clean energy source, and offshore wind power generation facilities have been constructed due to restrictions on installation locations. At this time, the offshore wind power generation facility needs to place a large number of foundation piles with high accuracy, while shortening the construction period and reducing the construction cost. (For example, refer to Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-38247 (page 5-6, FIG. 10)

  The monopile foundation construction method disclosed in Patent Document 1 uses a connecting pipe (hereinafter referred to as a “joint sleeve”) to connect a monopile foundation erected on the seabed and a wind turbine tower (hereinafter referred to as a “bottom tower”). To connect. In other words, the joint sleeve is put on the monopile foundation, and the upper end of the joint sleeve is made horizontal through the level adjusting section. Then, “grouting” is performed in which a gap between the joint sleeve and the monopile foundation is filled with grout (for example, an underwater indegradable high-flow non-shrink mortar). This grout bonding has the following problems.

(1) Including the curing time such as the strength expression of grout requires days and affects the whole construction process.
(2) Moreover, there is a risk that the adhesion between the grout and the bottom tower and the adhesion between the grout and the monopile foundation are cut off due to the repeated action of wind and waves on the bottom tower. For this reason, the grout collapses, and the grout joint is likely to be a structural “weak point”, making it difficult to control the quality of the grout over a long period of time.

  The present invention solves the problems associated with grout bonding as described above, shortens the construction time, and has the required joint performance over a long period of time, and the joint forming the joint structure And it is providing the construction method of the pile structure connected by this joint.

The joint structure according to the present invention is a joint structure that connects a pile head flange portion installed at the head of a pile erected on the ground and an upper structure flange portion provided in the upper structure. ,
A first joint member and a second joint member, wherein each of the first joint member and the second joint member includes a cylindrical portion and an annular lower flange portion provided at one end of the cylindrical portion; And an annular upper flange portion provided at the other end of the cylindrical portion,
The upper flange portion of the first joint member is inclined with respect to the lower flange portion of the first joint member, and the upper flange portion of the second joint member is against the lower flange portion of the second joint member. Each tilt angle is the same,
The lower flange portion of the first joint member is connected to the pile head flange portion by mechanical connection means, and the lower flange portion of the second joint member is mechanically connected to the upper flange portion of the first joint member. The upper structure flange portion is connected to the upper flange portion of the second joint member by mechanical connection means.

Further, in the joint structure according to the present invention, the center of the upper flange portion of the first joint member coincides with the center of the lower flange portion of the second joint member,
When the central axis of the pile is vertical, the first thickest phase corresponding to the thickest position of the first joint member and the second thickest position corresponding to the thickest position of the second joint member. The thickness phase is characterized by being arranged at symmetric positions with respect to the center on an imaginary line passing through the center.

Further, in the joint structure according to the present invention, the center of the upper flange portion of the first joint member coincides with the center of the lower flange portion of the second joint member,
When the central axis of the pile is inclined in the pile inclination direction with respect to the vertical, the first thickest phase corresponding to the thickest position of the first joint member and the thickest of the second joint member The second thickest phase corresponding to the thick position is characterized by being arranged at positions symmetrical to each other with respect to the pile inclination direction virtual line in the pile inclination direction passing through the center.

  Further, in the joint structure according to the present invention, the pile inclination angle inclined with respect to the vertical of the central axis of the pile in the pile inclination direction is the inclination angle of the first joint member and the inclination angle of the second joint member. The first thickest phase and the second thickest phase are arranged at the same position on the pile tilt direction imaginary line.

Further, in the joint structure according to the present invention, the pile head flange portion, the upper structure flange portion, and the lower flange portion are formed with flange portion through holes that are equidistant from each other at least on the circumference, In the upper flange portion, the upper flange portion through hole is formed in the same phase as the flange portion through hole,
The mechanical connection means includes a bolt that passes through the flange through holes and a nut that is screwed into the bolt, or a bolt that passes through the flange through hole and the upper flange through hole and is screwed into the bolt. It is characterized by being a nut.

Furthermore, the joint according to the present invention has a first joint member and a second joint member for connecting the head of the pile erected on the ground and the upper structure,
Each of the first joint member and the second joint member is provided at the cylindrical portion, an annular lower flange portion provided at one end portion of the cylindrical portion, and the other end portion of the cylindrical portion. An annular upper flange portion,
The upper flange portion of the first joint member is inclined with respect to the lower flange portion of the first joint member, and the upper flange portion of the second joint member is against the lower flange portion of the second joint member. And the inclination angles are the same.
Furthermore, the joint according to the present invention is characterized in that a shape dimension of the first joint member is the same as a shape dimension of the second joint member.

Furthermore, the construction method of the pile structure according to the present invention includes a pile head flange portion installed at the head of a pile erected on the ground and an upper structure flange portion provided in the upper structure. A construction method of a pile structure connected by
The joint includes a first joint member and a second joint member, and each of the first joint member and the second joint member is a cylindrical portion and an annular shape provided at one end of the cylindrical portion. A lower flange portion, a plurality of lower through holes formed in the lower flange portion, an annular upper flange portion provided at the other end of the cylindrical portion, and a plurality of holes formed in the upper flange portion An upper through hole, wherein the upper flange portion of the first joint member is inclined with respect to the lower flange portion of the first joint member, and the upper flange portion of the second joint member is the second It is inclined with respect to the lower flange portion of the joint member, and the respective inclination angles are the same,
Measuring the pile inclination direction and the pile inclination angle in which the pile is inclined with respect to the vertical (S1);
With respect to the first joint member and the second joint member, the virtual surface and the upper flange portion with respect to a rotation lower phase line that is a line of intersection between the virtual surface including the central axis of the cylindrical portion and the lower flange portion A step (S2) of specifying a virtual plane in which a rotation phase inclination angle, which is an angle formed by a rotation phase line that is an intersection line, becomes 1/2 of the measured pile inclination angle;
Among the plurality of pile head through holes formed in the pile head flange portion, a plurality of the first joint members are connected to the pile head through holes that are closest to the pile tilt direction virtual line in the pile tilt direction. A lower through hole arranged at a position closest to the rotation lower phase line in the identified virtual plane is overlapped among the lower through holes, and the lower flange portion of the first joint member is machined on the pile head flange portion. Connecting by means of a type connecting means (S3);
Of the plurality of upper through-holes of the first joint member, the upper through-holes disposed at the positions closest to the rotation upper phase line in the specified virtual plane, the plurality of lower through-holes of the second joint member Of these, the lower through-hole disposed at a position closest to the rotation lower phase line on the identified virtual plane is overlapped so that the inclination of the pile is canceled, and the first flange is placed on the upper flange portion of the first joint member. Connecting the lower flange part of the two joint members by mechanical connecting means (S4);
A step (S5) of connecting the upper structure flange portion to the upper flange portion of the second joint member by mechanical connection means.

  According to the present invention, the inclination of the pile can be absorbed, the construction time is shortened, and the required performance as a joint is obtained over a long period against an external force that repeatedly acts.

The longitudinal cross-sectional view which shows a part (1st coupling member) explaining the coupling which concerns on Embodiment 1 of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view illustrating a joint according to Embodiment 1 of the present invention, with a part of each of constituent members being shown in cross section. It is a cross-sectional view which shows the cross section which looked at another direction about each of the member to demonstrate the coupling which concerns on Embodiment 1 of this invention. It is the side view which made the cross section partially explaining the joint structure which concerns on Embodiment 2 of this invention. FIG. 5 is a perspective view showing a perspective view of each member with a part (bottom tower) illustrating Example 2 of the joint structure illustrated in FIG. 4 omitted. FIG. 5 is a perspective view showing a perspective view of each member, omitting a part (bottom tower) for explaining a third embodiment of the joint structure described in FIG. 4. FIG. 5 is a perspective view illustrating each member with a part (bottom tower) illustrating Example 4 of the joint structure illustrated in FIG. 4 omitted. It is a flowchart explaining the construction method of the pile structure which concerns on Embodiment 3 of this invention.

[Embodiment 1: Joint]
A mode for carrying out the present invention will be specifically described with reference to the drawings. In addition, the following drawings are drawn typically and this invention is not limited to the drawn form.
1 to 3 illustrate a joint according to Embodiment 1 of the present invention. FIG. 1 is a longitudinal sectional view showing a part (first joint member), and FIG. FIG. 3 is a cross-sectional view showing a cross section of the constituent members viewed in a different direction. In FIG. 2, some of the portions (first lower outer through-holes, etc.) are shown, and the total number is not shown. Further, in FIG. 3, one member (first joint member) shown on the lower side in the drawing is a cross section viewed from the upper side, and the other member (second joint member) shown on the upper side in the drawing is crossed. The surface is viewed downward.

(Fitting member)
1 to 3, a joint 100 is connected to a head of a cylindrical pile standing on the ground (including the seabed, lake bottom, riverbed, etc.) and an upper structure (see FIG. 4). It has 1 joint member 110a and 2nd joint member 110b. The first joint member 110a and the second joint member 110b have the same shape (common parts).
Therefore, hereinafter, the first joint member 110a will be mainly described, and for the second joint member 110b, “first”, which modifies the names of the respective parts of the first joint member 110a, will be referred to as “second”. “A” is replaced with “b”. In the description of the common contents, the description of “first” or “second” that modifies the name of each part and “a” or “b” attached to the reference may be omitted.

(Cylindrical part)
The first joint member 110a is perpendicular to the first cylindrical portion 20a and the central axis (hereinafter referred to as “first cylindrical portion central axis”) 29a of the first cylindrical portion 20a, and is one end of the first cylindrical portion 20a. (Hereinafter referred to as “first cylindrical portion lower end”) 21a, the annular first lower flange portion 10a provided on 21a, and the other end of the first cylindrical portion 20a (hereinafter referred to as “first cylindrical portion upper end”) And an annular first upper flange portion 30a which is provided at 23a and is inclined with respect to the first lower flange portion 10a by a “joint member inclination angle α (for example, α = 0.75 °)”.

In the first joint member 110a, the distance between the lower surface of the first lower flange portion 10a of the first cylindrical portion 20a and the upper surface of the first upper flange portion 30a (hereinafter referred to as “thickness”) is the thickest. The corresponding circumferential phase is referred to as “first thickest phase 22a” and is indicated by “phase A”. Further, the position of the first cylindrical portion central axis 29a is defined as “center O (O)”, and the virtual line passing through the phase A and the center O is defined as “first virtual line 28a”. Further, the circumferential phase corresponding to the position where the thickness of the first cylindrical portion 20a is the thinnest is referred to as “first thinnest phase 24a”. On the virtual line 28a, the phase A is symmetrical with respect to the center O.
For convenience of explanation, the phase A and the phase P are illustrated in the first upper flange portion 30a. However, in the first lower flange portion 10a, the first thickest phase 22a is also the phase A, and the first thinnest phase. 24 a is also the phase P.

Further, for convenience of the following description, a virtual plane in the direction of the first thickest phase 22a including the first cylindrical portion central axis 29a is set to a predetermined angle (hereinafter referred to as “rotational angle θ”) with the first cylindrical portion central axis 29a as the rotational center. The phase of the virtual surface when rotated is referred to as “first rotation phase 25a”. The intersection line between the virtual surface and the lower surface of the first lower flange portion 10a is defined as “first rotation lower phase line 26a”, and the intersection line between the virtual surface and the upper surface of the first upper flange portion 30a is defined as “first rotation. The angle formed by the first rotation upper phase line 27a with respect to the first rotation lower phase line 26a is referred to as “rotation phase tilt angle δ”.
In the second joint member 110b, the second thinnest phase 22b of the second lower flange portion 10b is indicated by “phase B”, and the second thinnest phase 24b of the second lower flange portion 10b is indicated by “phase Q”. In the second upper flange portion 30b, the second thinnest phase 22b is also the phase B, and the second thinnest phase 24b is also the “phase Q”.

(Lower flange, upper flange)
The first lower flange portion 10a is a ring, and includes a first lower outer flange portion 11a that protrudes outside the first cylindrical portion 20a, a first lower inner flange portion 15a that protrudes inside the first cylindrical portion 20a, It has. A plurality of first lower outer through holes 13a are formed at equal intervals on the first lower outer circumference circle 12a in the first lower outer flange portion 11a. Similarly, a plurality of first lower inner through holes 17a are formed at equal intervals on the first lower inner circumferential circle 16a in the first lower inner flange portion 15a.
Similarly, the first upper flange portion 30a is a ring, and includes a first upper outer flange portion 31a projecting outside the first cylindrical portion 20a, and a first upper inner flange projecting inside the first cylindrical portion 20a. Part 35a. A plurality of first upper outer through holes 33a are formed at equal intervals on the first upper outer circumference circle 32a in the first upper outer flange portion 31a. A plurality of first upper inner through holes 37a are formed at equal intervals on the first upper inner circle 36a in the first upper inner flange portion 35a.

(Through hole)
First lower outer through-hole 13a, first lower inner through-hole 17a, first upper outer through-hole 33a, and first upper inner through-hole 37a (hereinafter referred to as “through holes” individually or collectively, respectively) Are the same number (for example, 32 locations, see FIG. 3), one of which is arranged in the first thickest phase 22a. At this time, it is arranged at the center of the first lower outer through-hole 13a (hereinafter referred to as “first thickest phase lower outer through-hole 14a”) disposed in the first thickest phase 22a and the first thickest phase 22a. The first outer imaginary line 114a connecting the center of the first upper outer through-hole 33a (hereinafter referred to as “first thickest phase upper outer through-hole 34a”) is parallel to the first cylindrical portion central axis 29a.
Similarly, the center of the first lower inner through hole 17a (hereinafter referred to as “first thickest phase lower inner through hole 18a”) disposed in the first thickest phase 22a and the first thickest phase 22a. The first inner imaginary line 118a connecting the center of the first upper inner through-hole 37a (hereinafter referred to as “first thickest phase upper inner through-hole 38a”) is parallel to the first cylindrical portion central axis 29a.

  In the above, all the through holes are formed at equal intervals, but the present invention is not limited to this. That is, as long as all the through holes are arranged symmetrically with respect to the first imaginary line 28a, at least some through holes are arranged at equal intervals, and between the through holes arranged at equal intervals, Further, a through hole may be added. Further, the number of the first lower outer through holes 13a and the number of the first lower inner through holes 17a are the same, but the number of both may be different. This also applies to the first upper outer through hole 33a and the first upper inner through hole 37a.

In addition, although the 1st upper flange part 30a is an annular | circular shape above, you may make the 1st upper flange part 30a elliptical.
In the above, the first lower flange portion 10a is perpendicular to the first cylindrical portion central axis 29a of the first cylindrical portion 20a. However, the present invention is not limited to this, and the first lower flange portion 10a. Both the first upper flange portion 30a and the first cylindrical portion central axis 29a may be inclined.
Further, the first lower flange portion 10a has only one of the first lower outer flange portion 11a or the first lower inner flange portion 15a, and the first upper flange portion 30a is the first upper outer flange portion 31a or the first upper inner portion. Only one of the flange portions 35a may be provided.

Example 1
The shape of the joint 100 is not limited. In particular, the shape dimension of the joint 100 varies depending on the shape dimension of the pile or the upper structure on which the joint 100 is installed.
For example, at the upper end of a circular steel pipe having an outer diameter of 6000 mm and a thickness of 75 mm (see “Pile 400” shown in FIG. 4), a flange portion (an outer diameter of 6000 mm and an inner diameter of 5200 mm) and a thickness of 75 mm is formed (“ In the case of a pile in which a pile head flange portion 40 ”is installed, the shape of the joint 100 is, for example, as follows.

The cylindrical portion 20 is a circular steel pipe having an outer diameter of 5400 mm and an inner diameter of 5280 mm, and has a thickness of 922 mm in the thickest phase 22 and a thickness of 852 mm in the thinnest phase 24.
The lower flange portion 10 and the upper flange portion 30 are circular rings having an outer diameter of 5636 mm, an inner diameter of 5048 mm, and a thickness of 75 mm. And the lower outer periphery circle | round | yen 12 and the upper outer periphery circle | round | yen 32 are 5517 mm in diameter, and the lower outer through-hole 13 and the upper outer through-hole 33 are formed in 170 places at equal intervals on it. Further, the lower inner circumferential circle 16 and the upper inner circumferential circle 36 have a diameter of 5163 mm, and the lower inner through-hole 17 and the upper inner through-hole 37 are formed at equal intervals in 32 places thereon.
The upper flange portion 30 is inclined “0.75 ° (α = 0.75 °)” with respect to the lower flange portion 10. Therefore, the distance (thickness) between the upper surface of the upper flange portion 30 and the lower surface of the lower flange portion 10 is 1074 mm in the thickest phase 22 (phase A) and 1000 mm in the thinnest phase 24 (phase P).

  In addition, although the above is a case where the 1st joint member 110a and the 2nd joint member 110b have the same shape dimension (common component), this invention is not limited to this. Each includes a cylindrical portion (20a, 20b), a lower flange portion (10a, 10b), an upper flange portion (30a, 30b) and a through hole (13a, 33b, 17a, 37b), and each joint member inclination angle α As long as these are the same, the shape dimensions may be different.

[Embodiment 2: Joint structure]
A mode for carrying out the present invention will be specifically described with reference to the drawings. In addition, the following drawings are drawn typically and the description of one part is abbreviate | omitted, and this invention is not limited to the drawn form. The same members as those in the first embodiment are denoted by the same reference numerals, and a part of the description is omitted. Moreover, although the bottom tower of a wind power generator is demonstrated as an upper structure, this invention is not limited to this.
4 to 7 illustrate a joint structure according to Embodiment 2 of the present invention. FIG. 4 is a side view of a part of the joint structure, and FIG. FIG. 6 is a perspective view showing a perspective view of each member with a part (bottom tower) omitted, and FIG. 7 is a perspective view thereof. FIG. 4 is a perspective view showing a part of FIG. In addition, a through-hole (refer FIG. 4 etc.) is not described in FIGS.

In FIG. 4, the joint structure 200 includes a pile head flange portion 40 installed on the head of a pile 400 erected on the ground (not shown) by the joint 100, and a bottom tower (corresponding to an upper structure). A tower flange portion (corresponding to an upper structure flange portion) 50 installed at 500 is connected.
The pile head flange portion 40 is in contact with the first lower flange portion 10a of the first joint member 110a, and is outside the pile head at the same position as the first lower outer through hole 13a and the first lower inner through hole 17a. A through hole 43 and a through hole 47 in the pile head are formed. Then, the nut 91 is screwed into the bolt 90 that has passed through the first lower outer through hole 13a and the pile head outer through hole 43, and the nut 90 is passed through the first lower inner through hole 17a and the pile head inner through hole 47. 91 is screwed (corresponding to a mechanical connection means).

  Further, at the contact portion between the first joint member 110a and the second joint member 110b, the nut 91 is screwed into the bolt 90 penetrating the first upper outer through hole 33a and the second lower outer through hole 13b, and the first A nut 91 is screwed into a bolt 90 penetrating the upper inner through hole 37a and the second lower inner through hole 17b (corresponding to a mechanical connection means).

Further, the tower flange portion 50 abuts on the second upper flange portion 30b of the second joint member 110b, and the tower outer through hole 53 is similar to the pile head outer through hole 43 and the pile head inner through hole 47. And the through-hole 57 in a tower is formed, respectively. Then, a nut 91 is screwed into the bolt 90 penetrating the second upper outer through hole 33b and the tower outer through hole 53, and the nut 91 is inserted into the bolt 90 penetrating the second upper inner through hole 37b and the tower inner through hole 57. They are screwed together (corresponding to mechanical connection means).
Although the bolts 90 are inserted into all the through holes as described above, the present invention is not limited to this, and the bolts 90 are inserted into some through holes and the bolts 90 are inserted into the other through holes. It does not have to be done.

(Example 2)
In FIG. 5, a case where the pile 400 is erected in the vertical direction 490 will be described. That is, the pile inclination angle φ is “0.00 ° (φ = 0.00 °)”.
At this time, the phase A (first thinnest phase 22a) of the first joint member 110a and the phase Q (second thinnest phase 24b) of the second joint member 110b coincide with each other (at this time, the phase P (first phase) 1 thinnest phase 24a) and phase B (second thinnest phase 22b) coincide).
Accordingly, the first imaginary line 28a and the second imaginary line 28b are on the same line, and the phase A (first thickest phase 22a) of the first joint member 110a and the phase B (second maximum thickness) of the second joint member 110b. The thickness phase 22b) is arranged at a diagonal position with respect to the center O (∠AOB = 180 °).
At this time, since the joint member inclination angle α of the first joint member 110a and the joint member inclination angle α of the second joint member 110b cancel each other, the first lower flange portion 10a and the second upper flange portion 30b are They are parallel (β = 0.00 °).
Therefore, even when the joint head 100 is used when the pile head flange portion 40 is horizontal, the tower flange portion 50 can be leveled (the bottom tower 500 is erected vertically).
Although the first upper flange portion 30a and the second lower flange portion 10b are in contact with each other, the second joint member 110b is turned over so that the second upper flange portion 30b contacts the first upper flange portion 30a. You may touch.

(Example 3)
In FIG. 6, the case where the pile 400 is inclined at a pile inclination angle “1.50 ° (φ = 1.50 °)” in the pile inclination direction 410 (indicated by a thick arrow) will be described. The joint member inclination angle α is “0.75 ° (α = 0.75 °)”, and the pile inclination angle φ is twice the joint member inclination angle α (φ = 2 · α).
At this time, the phase A (first thickest phase 22a) of the first joint member 110a and the phase B (second thickest phase 22b) of the second joint member 110b are the pile inclination direction 410 passing through the pile center axis 409. On the virtual line (hereinafter referred to as “pile inclination direction virtual line 408”). Therefore, the pile inclination direction imaginary line 408, the first imaginary line 28a, and the second imaginary line 28b overlap each other (∠AOB = 0 °). At this time, the phase P (first thinnest phase 24a) and the phase Q (second thinnest phase 24b) coincide with each other on the pile tilt direction virtual line 408.

That is, in the pile inclination direction 410, since the joint member inclination angle α of the first joint member 110a and the joint member inclination angle α of the second joint member 110b are simply overlapped, the joint inclination angle β The sum of the member inclination angles α is “1.50 °”, which coincides with the pile inclination angle φ (β = φ = 1.50 °). Also, for the direction perpendicular to the pile inclination direction 410, the inclination of the first upper flange part 30a with respect to the first lower flange part 10a and the inclination of the second upper flange part 30b with respect to the second lower flange part 10b are: They are horizontal to cancel each other.
Therefore, the inclination (φ = 1.50 °) of the pile 400 is absorbed by the joint 100, and the tower flange portion 50 is horizontal. Therefore, when the pile 400 is erected obliquely, the bottom tower 500 can be installed in the vertical direction 490 by using the joint 100.
That is, for example, when the joint member inclination angle α is set to “0.75 ° (α = 0.75 °)”, the joint 100 is bottomed until the pile 400 is tilted by the maximum “1.50 °” in the pile inclination direction 410. The tower 500 can be installed in a substantially vertical direction 490.
Although the first upper flange portion 30a and the second lower flange portion 10b are in contact with each other, the second joint member 110b is turned over so that the second upper flange portion 30b contacts the first upper flange portion 30a. You may touch.

Example 4
In FIG. 7, a case where the pile 400 is inclined in a pile inclination direction 410 (indicated by a thick arrow) with a pile inclination angle φ (for example, φ = 0.75 °) will be described.
At this time, the first rotation lower phase line 26a and the first rotation upper phase line 27a (first rotation) in which the rotation phase inclination angle δ is 1/2 of the pile inclination angle φ (δ = φ / 2 = 0.375 °). Phase 25a, see FIG. 2) and the second rotation lower phase line 26b (second rotation phase 25b, see FIG. 2) respectively coincide with the pile inclination direction virtual line 408, and cancel the inclination of the pile 400, The first joint member 110a and the second joint member 110b are connected.

At this time, if the joint member inclination angle α is “0.75 °”, the clockwise rotation angle θ of the first joint member 110a is “45 ° (θ = 45 °)”, and the second joint member 110b The rotation angle θ in the counterclockwise direction is “45 ° (θ = 45 °)” (∠AOB = 90 °).
Also, for the direction perpendicular to the pile inclination direction 410, the inclination of the first upper flange part 30a with respect to the first lower flange part 10a and the inclination of the second upper flange part 30b with respect to the second lower flange part 10b are: They are horizontal to cancel each other.
Therefore, the inclination of the pile 400 is absorbed by the joint 100, and the tower flange portion 50 is substantially horizontal. Therefore, when the pile 400 is erected obliquely, by using the joint 100, the pile inclination angle φ is approximately absorbed and the bottom tower 500 becomes substantially vertical.

As described above, the first joint member 110a and the second joint member 110b are identified by specifying the rotation angle θ at which the rotation phase inclination angle δ is ½ of the pile inclination angle φ (see FIG. 2). A through-hole arranged on the first rotation upper phase line 27a at the rotation angle θ and a through-hole arranged on the second rotation lower phase line 26b at the specified rotation angle θ (or the first The pile head penetration in which the through hole arranged closest to the rotation upper phase line 27a and the through hole arranged closest to the second rotation lower phase line 26b are on the pile tilt direction virtual line 408 of the pile 400 It connects so that the inclination of the pile 400 may be negated so that it may be right above the hole (or the pile through hole in the position closest to the pile inclination direction virtual line 408), that is, the pile head through hole in the lowest position. From the above, the joint structure 200 is an inclination of the pile 400 Can be substantially absorbed.
At this time, the first joint member 110a and the second joint member 110b are the same as being rotated symmetrically with respect to the pile inclination direction virtual line 408 and arranged symmetrically.
In addition, it may replace with the pile head through-hole which is the lowest position, and may use the pile head through-hole standard which is the highest position.

As described above, the joint structure 200 includes the first imaginary line 28a and the second imaginary line 28a on the contact surface between the first upper flange portion 30a of the first joint member 110a and the second lower flange portion 10b of the second joint member 110b. Since the rotation phase inclination angle δ (see FIG. 2) can be changed by changing the angle (∠AOB) formed with the virtual line 28b, that is, by changing the rotation angle θ, the first joint member 110a. The joint inclination angle β (β = 2 · δ) formed by the lower surface of the first lower flange portion 10a and the upper surface of the second upper flange portion 30b of the second joint member 110b can be changed. Furthermore, mechanical connection means (bolt 90 / nut 91) is used instead of grout bonding. Therefore, the following effects can be obtained.
(1) When the pile 400 is inclined, the bottom tower 500 can be made vertical or substantially vertical by absorbing the pile inclination angle φ.
(2) Since a curing time such as strength development like grout is unnecessary, the construction period is shortened.
(3) Moreover, even if wind and waves repeatedly act on the bottom tower 500, it has the required performance as a joint for a long period of time.

[Embodiment 3: Construction method of pile structure]
The form for implementing this invention is demonstrated concretely with reference to a flowchart. In addition, the order which implements each process is not limited to the order shown, It can change suitably. The same members as those in the first embodiment or the second embodiment are denoted by the same reference numerals, and a part of the description is omitted.
FIG. 8 is a flowchart illustrating a method for constructing a pile structure according to Embodiment 3 of the present invention. In addition, FIG. 2 is referred for the name and code | symbol of each site | part.

(flowchart)
In FIG. 8, the construction method of a pile structure has the following processes.
Measuring the pile inclination angle φ of the pile 400 (S1);
For the first joint member 110a, the first rotation lower phase line 26a and the first rotation upper phase line 27a that are 1/2 the pile inclination angle φ of which the rotation phase inclination angle δ is measured are specified, and the second joint member For 110b, a step (S2) of identifying the second rotation lower phase line 26b and the second rotation upper phase line 27b, which are ½ of the measured pile inclination angle φ, for the rotation phase inclination angle δ,
The first lower outer through hole 13a and the first first hole arranged at positions closest to the identified first rotation lower phase line 26a in the pile head outer through hole 43 and the pile head inner through hole 47 which are at the lowest position. A step of overlapping the lower inner through hole 17a and connecting the first lower flange portion 10a of the first joint member 110a to the pile head flange portion 40 with the bolt 90 / nut 91 (S3);
The first upper outer through-hole 33a and the first upper inner through-hole 37a disposed at the position closest to the identified first rotation upper phase line 27a are positioned closest to the identified second rotation lower phase line 26b. The second lower outer through-hole 13b and the second lower inner through-hole 17b that are arranged are overlapped so as to cancel the inclination of the pile 400, and the second joint member 110b is placed on the first upper flange portion 30a of the first joint member 110a. Connecting the second lower flange portion 10b with a bolt 90 / nut 91 (S4);
A step of connecting the tower flange portion 50 to the second upper flange portion 30b of the second joint member 110b with the bolt 90 / nut 91 (S5).

That is, the second joint member 110b is symmetrical with respect to the pile inclination direction imaginary line 408 (the phase B (second imaginary line 28b) is phase A (first (The symmetric position of the virtual line 28a)) (see FIG. 7).
Therefore, the construction method of this pile structure has the joint structure 200, and while the joint structure 200 can absorb the inclination of the pile 400 as described above, the bolt 90 / nut 91 (mechanical connection means) is used. Thus, the above-mentioned effect can be obtained.
In addition, although the above is connecting the 2nd coupling member 110b to the 1st coupling member 110a connected to the pile head flange part 40, this invention is not limited to this. For example, in a state where the angle formed by the first virtual line 28a and the second virtual line 28b is twice the rotation angle θ, the first joint member 110a and the second joint member 110b are previously integrated, You may connect this integrated thing to the pile head flange part 40. FIG.
In addition, it replaces with the pile-head outer through-hole 43 and the pile-head inner through-hole 47 which are the lowest positions, and is based on the pile-head outer through-hole 43 and the pile-head inner through-hole 47 which are the highest positions. A process according to the above process may be performed.

  Although the present invention has been described based on the embodiment, this embodiment is an exemplification, and various modifications can be made to combinations of the respective components, and such modifications are also included in the present invention. It will be understood by those skilled in the art that it is in the range.

  As described above, the joint structure of the present invention, the joint, and the method of constructing the pile structure can absorb the inclination of the pile and solve the problems associated with the use of the grout. It is not limited to the connection with, and can be widely used as a joint structure for connecting various substructures and various superstructures, a joint, and a construction method for the structure.

10a: first lower flange portion 10b: second lower flange portion 11a: first lower outer flange portion 11b: second lower outer flange portion 12a: first lower outer circumferential circle 12b: second lower outer circumferential circle 13a: first lower outer Through hole 13b: second lower outer through hole 14a: first thickest phase lower outer through hole 14b: second thickest phase lower outer through hole 15a: first lower inner flange portion 15b: second lower inner flange portion 16a: First lower inner circumference circle 16b: Second lower inner circumference circle 17a: First lower inner through hole 17b: Second lower inner through hole 18a: First thickest phase lower inner through hole 18b: Second thickest phase lower inner Through hole 20a: first cylindrical portion 20b: second cylindrical portion 21a: first cylindrical portion lower end 21b: second cylindrical portion lower end 22a: first thickest phase 22b: second thickest phase 23a: first cylindrical portion upper end 23b : Second cylindrical portion upper end 24a: first thinnest phase 24b: second thinnest phase 25a: first rotational phase 2 b: second rotation phase 26a: first rotation lower phase line 26b: second rotation lower phase line 27a: first rotation upper phase line 27b: second rotation upper phase line 28a: first imaginary line 28b: second imaginary line 29a: first cylindrical portion central axis 29b: second cylindrical portion central axis 30a: first upper flange portion 30b: second upper flange portion 31a: first upper outer flange portion 31b: second upper outer flange portion 32a: first Upper outer circle 33a: first upper outer through hole 33b: second upper outer through hole 34a: first thickest phase upper outer through hole 35a: first upper inner flange portion 35b: second upper inner flange portion 36a: first Upper inner circle 37a: first upper inner through hole 37b: second upper inner through hole 38a: first thickest phase upper inner through hole 40: pile head flange 43: pile head outer through hole 47: pile head inside Through hole 50: Tower flange portion 53: Tower outer through hole 57: Tower inner through hole 90 Bolt 91: Nut 100: Joint 110a: First joint member 110b: Second joint member 114a: First outer imaginary line 118a: First inner imaginary line 200: Joint structure 400: Pile 408: Pile inclination direction imaginary line 409: Pile Central axis 410: Pile inclination direction 490: Vertical direction 500: Bottom tower α: Joint member inclination angle β: Joint inclination angle δ: Rotation phase inclination angle θ: Rotation angle φ: Pile inclination angle A: First thickest phase B: Second thinnest phase P: First thinnest phase Q: Second thinnest phase O: Center

Claims (8)

It is a joint structure that connects a pile head flange portion installed at the head of a pile erected on the ground and an upper structure flange portion provided in the upper structure,
A first joint member and a second joint member, wherein each of the first joint member and the second joint member includes a cylindrical portion and an annular lower flange portion provided at one end of the cylindrical portion; And an annular upper flange portion provided at the other end of the cylindrical portion,
The upper flange portion of the first joint member is inclined with respect to the lower flange portion of the first joint member, and the upper flange portion of the second joint member is against the lower flange portion of the second joint member. Each tilt angle is the same,
The lower flange portion of the first joint member is connected to the pile head flange portion by mechanical connection means, and the lower flange portion of the second joint member is mechanically connected to the upper flange portion of the first joint member. A joint structure connected by connection means, wherein the upper structure flange portion is connected to the upper flange portion of the second joint member by mechanical connection means. The center of the upper flange portion of the first joint member is coincident with the center of the lower flange portion of the second joint member,
When the central axis of the pile is vertical, the first thickest phase corresponding to the thickest position of the first joint member and the second thickest position corresponding to the thickest position of the second joint member. 2. The joint structure according to claim 1, wherein the thickness phase is arranged at a symmetric position with respect to the center on an imaginary line passing through the center. The center of the upper flange portion of the first joint member is coincident with the center of the lower flange portion of the second joint member,
When the central axis of the pile is inclined in the pile inclination direction with respect to the vertical, the first thickest phase corresponding to the thickest position of the first joint member and the thickest of the second joint member 2. The joint according to claim 1, wherein the second thickest phase corresponding to the thick position is disposed at a position symmetrical to each other with respect to a pile tilt direction virtual line of the pile tilt direction passing through the center. Construction.   When the pile inclination angle inclined with respect to the vertical of the central axis of the pile in the pile inclination direction is equal to the sum of the inclination angle of the first joint member and the inclination angle of the second joint member, the first maximum 4. The joint structure according to claim 3, wherein the thickness phase and the second thickest phase are arranged at the same position on the pile tilt direction virtual line. The pile head flange portion, the upper structure flange portion, and the lower flange portion are formed with flange portions through holes that are equidistant from each other at least on the circumference, and the upper flange portion passes through the flange portion. The upper flange part through hole is formed in the same phase as the hole,
The mechanical connection means includes a bolt that passes through the flange through holes and a nut that is screwed into the bolt, or a bolt that passes through the flange through hole and the upper flange through hole and is screwed into the bolt. The joint structure according to claim 1, wherein the joint structure is a nut. A first joint member and a second joint member for connecting the head of the pile erected on the ground and the upper structure;
Each of the first joint member and the second joint member is provided at the cylindrical portion, an annular lower flange portion provided at one end portion of the cylindrical portion, and the other end portion of the cylindrical portion. An annular upper flange portion,
The upper flange portion of the first joint member is inclined with respect to the lower flange portion of the first joint member, and the upper flange portion of the second joint member is against the lower flange portion of the second joint member. The joint is characterized in that the inclination angle is the same and the inclination angle is the same.   The joint dimension according to claim 6, wherein a shape dimension of the first joint member is the same as a shape dimension of the second joint member. It is a construction method of a pile structure in which a pile head flange portion installed at the head of a pile erected on the ground and an upper structure flange portion provided in the upper structure are connected by a joint,
The joint includes a first joint member and a second joint member, and each of the first joint member and the second joint member is a cylindrical portion and an annular shape provided at one end of the cylindrical portion. A lower flange portion, a plurality of lower through holes formed in the lower flange portion, an annular upper flange portion provided at the other end of the cylindrical portion, and a plurality of holes formed in the upper flange portion An upper through hole, wherein the upper flange portion of the first joint member is inclined with respect to the lower flange portion of the first joint member, and the upper flange portion of the second joint member is the second It is inclined with respect to the lower flange portion of the joint member, and the respective inclination angles are the same,
Measuring the pile inclination direction and the pile inclination angle in which the pile is inclined with respect to the vertical (S1);
With respect to the first joint member and the second joint member, the virtual surface and the upper flange portion with respect to a rotation lower phase line that is a line of intersection between the virtual surface including the central axis of the cylindrical portion and the lower flange portion A step (S2) of specifying a virtual plane in which a rotation phase inclination angle, which is an angle formed by a rotation phase line that is an intersection line, becomes 1/2 of the measured pile inclination angle;
Among the plurality of pile head through holes formed in the pile head flange portion, a plurality of the first joint members are connected to the pile head through holes that are closest to the pile tilt direction virtual line in the pile tilt direction. A lower through hole arranged at a position closest to the rotation lower phase line in the identified virtual plane is overlapped among the lower through holes, and the lower flange portion of the first joint member is machined on the pile head flange portion. Connecting by means of a type connecting means (S3);
Of the plurality of upper through-holes of the first joint member, the upper through-holes disposed at the positions closest to the rotation upper phase line in the specified virtual plane, the plurality of lower through-holes of the second joint member Of these, the lower through-hole disposed at a position closest to the rotation lower phase line on the identified virtual plane is overlapped so that the inclination of the pile is canceled, and the first flange is placed on the upper flange portion of the first joint member. Connecting the lower flange part of the two joint members by mechanical connecting means (S4);
A method for constructing a pile structure comprising: connecting the upper structure flange portion to the upper flange portion of the second joint member by a mechanical connection means (S5).

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