JP2006089964A - Structure installation method and structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure installation method according to which temporary piles other than foundation files are dispensed with, and an installation height of a superstructure is positively adjusted to distribute the load of the superstructure to the foundation piles correspondingly, even if distortion occurs when setting the foundation piles and the superstructure, to thereby unite the foundation piles and the superstructure together in one body, and to provide a structure constructed according to the method. <P>SOLUTION: According to the structure installation method, each foundation pile 5 is set on the ground 3, and a steel pipe 39 of a height adjusting device 13 is inserted into a jacket leg 7 of the superstructure 1. Then, the superstructure 1 is hung from a hanging point fitting as a hanging point, which is arranged on an upper end of the height adjusting device 13, and the foundation pile 5 is inserted into the jacket leg 7, to thereby mount an end plate 55 of the steel pipe 39 on the foundation pile 5. At this time, a lower steel pipe 39c bears an intermediate steel pipe 39b via a spherical bearing 51, and the intermediate steel pipe 39b bears an upper steel pipe 39a via a slide jack 45. Thereafter, the slide jack 45 is extended/contracted to adjust the installation height of the superstructure 1, and thus the foundation piles 5 and the superstructure 1 are integrated together. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure installation method and a structure.

  Conventionally, when constructing offshore structures, etc. (1) After installing a temporary pile on the ground of the bottom and installing the upper structure on the temporary pile, the straight pile and the oblique pile are driven into the bottom A method of fixing the structure is used. The upper structure is horizontally adjusted and installed on the temporary pile (see, for example, Patent Document 1).

  Moreover, (2) There is also a method in which a foundation foundation pile is placed in advance on the ground of the water bottom, a leg of the upper structure is inserted into the foundation pile, and the leg and the foundation pile are fixed with a grout material. In this case, a support material having a diameter larger than the outer diameter of the foundation pile is provided at an appropriate position of the leg of the superstructure composed of the leg and the brace. And when a leg is inserted in a foundation pile, a support material is made to contact a foundation pile upper end (for example, refer to patent documents 2).

JP 2004-44199 A Japanese Patent No. 3423394

  However, in the method (1), it is necessary to perform pile driving twice (temporary piles and foundation piles), so that there is a problem that the cost is increased and the construction period becomes long. In addition, in the connection work between the foundation pile and the superstructure, a scaffold and work floor where the welder descends to the pile head are required.

  In the method (2), since the installation height of the upper structure is adjusted at the fixing position of the support member, the height cannot be adjusted during the installation work of the upper structure. If the height cannot be adjusted and the required slope cannot be secured on the upper floor surface, adjusted concrete will be used and the load will increase. Also, when inserting the legs into the foundation pile, if the support material provided on multiple legs does not hit the pile at the same time (in some extreme cases, there is a support material that does not hit the pile), the load on the pile will vary. Arise. In addition, it is necessary to use some of the legs for attaching a plurality of support materials as suspension points of the structure.

  The present invention has been made in view of such problems, and the purpose thereof is that a temporary pile other than the foundation pile is unnecessary, and even when distortion occurs during the installation of the foundation pile or the upper structure, An object of the present invention is to provide a structure installation method and a structure capable of integrating the foundation pile and the upper structure by surely adjusting the installation height of the upper structure and distributing the load corresponding to each foundation pile.

  1st invention for achieving the objective mentioned above consists of an upper stage cylinder and a lower stage cylinder in the upper structure which consists of a process (a) which installs a foundation pile in the ground, and a cylindrical leg part and a main part. A height adjusting device comprising a cylindrical body, a spherical bearing provided at a boundary portion between the upper cylindrical body and the lower cylindrical body, and an adjusting means for adjusting an installation height of the upper structure relative to the cylindrical body. (B) inserting and installing the cylinder into the leg, inserting the foundation pile into the leg, placing the cylinder on the foundation pile, and via the spherical bearing The step (c) of temporarily receiving the upper structure with the foundation pile, the step (d) of adjusting the installation height of the upper structure using the height adjusting device, the foundation pile and the And a step (e) of integrating the leg portion with the structure.

  One pair of spherical bearings is provided at the lower end of the upper cylinder. The other is provided at the upper end of the lower cylinder. The upper cylinder and the lower cylinder are connected by a suspension bolt. The suspension bolt, for example, connects a flange provided on the spherical bearing on the upper cylinder side and a flange provided on the spherical bearing on the lower cylinder side.

  In step (c), the lower end surface of the lower cylinder is placed on the top end of the foundation pile, but until the lower cylinder is placed on the top end of the foundation pile, It is the state connected with the suspension bolt. After the lower cylinder is placed on the top end of the foundation pile, the lower cylinder supports the upper cylinder via the spherical bearing. When the top end of the foundation pile is an inclined surface, the spherical bearing absorbs the inclination of the foundation pile and prevents an uneven load from acting on the cylinder.

  The second invention is the step (a) of installing the foundation pile on the ground, the upper structure composed of the cylindrical leg portion and the main body, the cylindrical body, and the suspension points provided in the vicinity of the upper end portion of the cylindrical body. A step (b) of installing a height adjusting device comprising a metal fitting and an adjusting means for adjusting an installation height of the superstructure relative to the cylindrical body by inserting the cylindrical body into the leg portion; The upper structure is transported using a point bracket as a hanging point, the foundation pile is inserted into the leg, the cylinder is placed on the foundation pile, and the upper structure is temporarily received by the foundation pile. Step (c), step (d) of adjusting the installation height of the upper structure using the height adjusting device, step (e) of integrating the foundation pile and the leg portion, A structure installation method characterized by comprising:

  The hanging point metal fitting includes, for example, a first flange fixed to the upper end portion of the cylindrical body, a second flange disposed below the first flange and fixed to the inner peripheral surface of the cylindrical body, And a reinforcing member for connecting the second flange and the second flange.

  The hanging point metal fitting is a jig for installing a hanging metal fitting such as a lifting machine ship in the height adjusting device. The hanging point metal fitting is installed so that the amount of upward protrusion of the upper structure is as small as possible. Thereby, at the time of carrying an upper structure by using a hanging point metal fitting as a hanging point in the step (c), it is possible to secure the maximum lifting height of a hoisting ship or the like.

  The third invention includes a step (a) of installing a foundation pile on the ground, an upper structure including a cylindrical leg and a main body, a cylinder including an upper cylinder and a lower cylinder, and the upper cylinder. And a height adjusting device, which is provided at a boundary portion between the lower cylinder and the adjusting means for adjusting the installation height of the upper cylinder relative to the lower cylinder, and inserts the cylinder into the leg. The step (b) of fixing and installing the upper end of the upper cylinder to the upper structure, and inserting the foundation pile into the leg, and placing the cylinder on the foundation pile, The step (c) of temporarily receiving the upper structure with the foundation pile and the step (d) of adjusting the installation height of the upper cylinder fixed to the upper structure using the height adjusting device. And a step (e) of integrating the foundation pile and the leg portion, and a structure installation method.

  The adjusting means is disposed between, for example, a reaction force cradle fixed to the inner peripheral surface near the lower end of the upper cylinder and a jack cradle fixed to the inner peripheral surface near the upper end of the lower cylinder. It is a jack. The upper cylinder and the lower cylinder are connected by a suspension bolt. The suspension bolt connects, for example, a reaction force support provided on the upper cylinder and a jack support provided on the lower cylinder.

  In step (c), the lower end surface of the lower cylinder is placed on the top end of the foundation pile, but until the lower cylinder is placed on the top end of the foundation pile, It is the state connected with the suspension bolt. After the lower cylinder is placed on the top end of the foundation pile, the lower cylinder supports the upper cylinder via an adjusting means such as a jack.

  The upper cylindrical body is fixed to the upper structure by, for example, integrating a flange provided at the upper end with a flange provided at the upper end of the leg portion. For example, the lower end of the upper cylinder and the upper end of the lower cylinder are slidably fitted in a seal shape. In the step (d), for example, the installation height of the upper structure to which the upper cylinder is fixed is adjusted by sliding the upper cylinder with respect to the lower cylinder by expanding and contracting the jack as the adjusting means.

  4th invention is the structure constructed | assembled using the installation method of the structure of 1st-3rd invention.

  According to the present invention, temporary piles other than foundation piles are unnecessary, and even when distortion occurs during the installation of foundation piles or upper structures, the installation height of the upper structures can be adjusted securely, It is possible to provide a structure installation method and a structure capable of integrating the foundation pile and the superstructure by appropriately distributing loads.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an elevation view of the upper structure 1 and the foundation pile 5 before being integrated, FIG. 2 is a plan view of the upper structure 1 as viewed from above, and FIG. It is sectional drawing of the upper structure 1 of the state made. FIG. 1 is a view as seen from the direction indicated by the arrow B in FIG. FIG. 3 is an enlarged cross-sectional view of a portion indicated by A in FIG.

  In order to install the underwater structure, first, as shown in FIG. 1, the foundation pile 5 is installed on the ground 3 at the bottom of the water 19. Moreover, as shown in FIG. 1 and FIG. 2, the upper structure 1 is assembled.

  As shown in FIGS. 1 and 2, the upper structure 1 includes a truss portion 11, a jacket leg 7, a brace 9, and the like. The truss portion 11 is a main body of the upper structure 1. The jacket leg 7 is a leg portion of the upper structure 1, is arranged so as to extend downward from the truss portion 11, and is fixed to the truss portion 11.

  As shown in FIG. 3, a flange 15 is fixed to the upper end portion of the jacket leg 7. The flange 15 is provided so as to protrude in the outer peripheral direction of the jacket leg 7. The flange 15 is, for example, an annular plate material. The corners formed by the flange 15 and the jacket leg 7 and the jacket leg 7 and the truss portion 11 are reinforced by the reinforcing member 46.

  As shown in FIGS. 1 and 2, the brace 9 is fixed between jacket legs 7 in order to reinforce the superstructure 1. The foundation pile 5 is a steel pipe pile, a steel pipe concrete pile, or the like. The number and installation positions of the foundation piles 5 are determined according to the number and installation positions of the jacket legs 7 of the upper structure 1.

  As shown in FIG. 3, the height adjusting device 13 includes a hanging point fitting, a steel pipe 39 and the like. The hanging point metal fitting includes the flange 35, the flange 41, and the reinforcing member 42 shown in FIG. The flange 35 is fixed to the upper end portion of the steel pipe 39. The flange 35 is, for example, an annular plate material as shown in FIG. 4B, and is provided so as to project in the outer peripheral and inner peripheral directions of the steel pipe 39.

  The flange 41 is disposed below the flange 35 so as to project in the inner peripheral direction of the steel pipe 39. The flange 41 is, for example, an annular plate material, and the outer peripheral portion is fixed to the inner peripheral surface of the steel pipe 39. A cylindrical reinforcing member 42 is fixed between the flange 35 and the flange 41.

  A suspension fitting 21 is installed in the height adjustment device 13 as necessary. The hanging point bracket is a jig for installing the hanging bracket 21 on the height adjusting device 13. As shown in FIG. 3, the suspension fitting 21 includes a suspension member 23, a connecting member 25, a widened portion 27, a switching member 29, and the like. The suspension member 23 is connected to a lifting machine ship or the like (not shown). The connecting member 25 is a member that connects the suspension member 23 and the widened portion 27. The widened portion 27 includes a main body 33 and a widened member 31 and is a member for attaching the hanging fitting 21 to the steel pipe 39 via a hanging point fitting. The switching member 29 is a member for switching the shape of the widening member 31.

  FIG. 4 is a diagram illustrating a method for attaching and detaching the hanging bracket 21. 4A is an elevation view of the height adjusting device 13 with the hanging bracket 21 attached, and FIG. 4B is a diagram of the height adjusting device 13 with the hanging bracket 21 removed. It is a top view.

  In the widened portion 27 of the hanging bracket 21, as shown in FIG. 3, when the switching member 29 is directed upward, the pair of widened members 31 are separated. As shown in FIG. 4A, when the switching member 29 is turned downward, the pair of widening members 31 are in contact with each other.

  In order to attach the suspension fitting 21 to the steel pipe 39 using the suspension point fitting comprising the flange 35, the flange 41, etc., first, as shown in FIG. 4 (a), the pair of widening members 31 are in contact with each other. The widened portion 27 is inserted into the steel pipe 39 through the opening of the flange 35. Then, as shown in FIG. 3, the pair of widening members 31 are separated with the switching device 29 facing upward, and the convex portion 44 of the widening member 31 is hooked on the flange 41.

  As shown in FIG. 1, in the upper structure 1, the height adjusting devices 13 are installed in at least four places. The height adjusting device 13 is installed in the upper structure 1 in advance by inserting the steel pipe 39 into the jacket leg 7 using a crane or the like. The flange 35 fixed to the upper end portion of the steel pipe 39 of the height adjusting device 13 and the flange 15 fixed to the upper end portion of the jacket leg 7 are integrated using a fixture 37. The fixture 37 is, for example, a bolt and a nut. In addition, the guide cap 17 is installed in the upper end part of the foundation pile 5a corresponding to the jacket leg 7a which does not install the height adjustment apparatus 13. FIG.

  As shown in FIG. 3, the steel pipe 39 of the height adjusting device 13 includes an upper steel pipe 39a, a middle steel pipe 39b, and a lower steel pipe 39c. FIG. 5 is a view showing the vicinity of the boundary between the upper steel pipe 39a and the middle steel pipe 39b. 5 (a) is an enlarged view of a portion indicated by D1 in FIG. 3, FIG. 5 (b) is a cross-sectional view taken along line HH in FIG. 5 (c), and FIG. 5 (c). The figure is a cross-sectional view taken along line GG in FIG.

  As shown in FIGS. 3 and 5 (a) and 5 (b), a reaction force receiving base 43 is fixed near the lower end of the upper steel pipe 39a. The reaction force receiving base 43 is provided along the inner peripheral surface of the upper steel pipe 39a, and the connecting portion between the reaction force receiving base 43 and the upper steel pipe 39a is reinforced by the reinforcing member 65.

  A jack cradle 47 is fixed near the upper end of the middle steel pipe 39b. The jack cradle 47 is provided along the inner peripheral surface of the middle steel pipe 39 b, and the connection portion between the jack cradle 47 and the middle steel pipe 39 b is reinforced by a reinforcing member 67.

  As shown in FIGS. 5A and 5B, the slide jack 45 is fixed to the upper surface of the jack cradle 47 via a fixing jig 57. The slide jack 45 extends and contracts in the vertical direction. As shown in FIG. 5B and FIG. 5C, the reaction force receiving base 43 and the jack receiving base 47 are connected by a suspension bolt 59. The suspension bolt 59 is provided with a head 61 at the end on the reaction force receiving base 43 side and a nut 63 at the end on the jack receiving base 47 side.

  5 (a) and 5 (b), the lower surface of the reaction force receiving base 43 is in contact with the upper end of the slide jack 45, but the state shown in FIG. When the article 1 is not installed on the foundation pile 5, the slide jack 45 and the reaction force receiving base 43 are not in contact with each other, and the upper steel pipe 39 a suspends the middle steel pipe 39 b through the suspension bolt 59. It is lowered.

  As shown in FIGS. 3, 5A and 5B, the upper end of the middle steel pipe 39b is reduced in diameter and inserted into the lower end of the upper steel pipe 39a. The upper end portion of the middle steel pipe 39b and the lower end portion of the upper steel pipe 39a can slide on the boundary surface 58. Further, as shown in FIGS. 3 and 5A, a reinforcing member 69 in the pipe axis direction is provided inside the upper steel pipe 39a.

  FIG. 6 is a view showing the vicinity of the boundary between the middle steel pipe 39b and the lower steel pipe 39c. 6 (a) is an enlarged view of a portion indicated by E1 in FIG. 3, FIG. 6 (b) is a cross-sectional view taken along line II of FIG. 6 (a), and FIG. 6 (c). The figure is a sectional view taken along line JJ in FIG.

  As shown in FIGS. 3 and 6A, a spherical bearing 51a is fixed to the lower end of the middle steel pipe 39b. The spherical bearing 51a is an annular member having a thickness, and is formed such that the lower surface is a part of the spherical surface 73 and the outer edge portion is continuous with the middle steel pipe 39b. A flange 77a, which is an annular plate material, is fixed to the spherical bearing 51a. The flange 77a is disposed so as to project in the inner peripheral direction of the steel pipe 39.

  As shown in FIGS. 3 and 6 (a) and 6 (c), a spherical bearing 51b is fixed to the upper end portion of the lower steel pipe 39c. The spherical bearing 51b is an annular member having a thickness, and is formed such that the upper surface becomes a part of the spherical surface 73 and the outer edge portion is continuous with the lower steel pipe 39c. A flange 77b, which is an annular plate material, is fixed to the spherical bearing 51b. The flange 77b is arranged so as to project in the inner peripheral direction of the steel pipe 39. The flange 77a and the flange 77b are connected by a suspension bolt 75. The suspension bolt 75 is provided with nuts 79 at both ends.

  6A, the spherical bearing 51a and the spherical bearing 51b are in contact with each other, but the state shown in FIG. 3, that is, the upper structure 1 is not installed on the foundation pile 5. In the state shown in FIG. 3, the spherical bearing 51a and the spherical bearing 51b are not in contact with each other, and the middle steel pipe 39b suspends the lower steel pipe 39c via the suspension bolt 75.

  As shown in FIGS. 3 and 6A, a centering manual jack 49 is fixed to the middle steel pipe 39b via a fixing jig 71. The centering manual jack 49 is disposed above the spherical bearing 51a at a predetermined interval in the circumferential direction of the middle steel pipe 39b. The centering manual jack 49 has a tapered portion 87 at the outer end of the middle steel pipe 39b, and expands and contracts in the radial direction of the middle steel pipe 39b.

  As shown in FIG. 6B, a work table 84 is appropriately provided inside the middle steel pipe 39b. The work table 84 is provided with an opening 81, an air duct 83, a wall lamp 85, and the like. Further, as shown in FIGS. 6A and 6B, a reinforcing member 69 in the tube axis direction is provided inside the middle steel pipe 39b.

  FIG. 7 is a view showing the vicinity of the lower end portion of the lower steel pipe 39c. 7A is an enlarged view of a portion indicated by F1 in FIG. 3, and FIG. 7B is a cross-sectional view taken along line KK in FIG. 7A.

  As shown in FIGS. 3 and 7 (a) and 7 (b), an end plate 55 is fixed to the lower end of the lower steel pipe 39c. The end plate 55 is, for example, a thick annular member. It is assumed that the outer diameter of the end plate 55 is larger than the outer diameter of the lower steel pipe 39c. A bowl-shaped portion 89 is fixed to the lower surface of the end plate 55.

  A work table 91 is fixed to the inner peripheral surface of the end plate 55. The work table 91 has an opening 93. A centering manual jack 49 is fixed to the end plate 55. The centering manual jack 49 is arranged at a predetermined interval in the circumferential direction of the end plate 55. The centering manual jack 49 has a tapered portion 87 at the outer end of the lower steel pipe 39c, and expands and contracts in the radial direction of the lower steel pipe 39c.

  A reinforcing member 69 in the pipe axis direction is provided inside the lower steel pipe 39c. Moreover, the lower steel pipe 39c has the opening part 53 which is a notch part in a lower end part. The openings 53 are provided at appropriate intervals in the circumferential direction of the lower steel pipe 39c.

  FIG. 8 is an elevational view in a state where the jacket leg 7 is inserted into the foundation pile 5, and FIG. 9 is a vertical sectional view in the vicinity of the upper end portion of the jacket leg 7. FIG. 9 is an enlarged cross-sectional view of a portion indicated by C in FIG.

  As shown in FIG. 1, after the foundation pile 5 is installed on the ground 3 and the upper structure 1 is assembled, the hanging bracket 21 is attached to the upper end of the steel pipe 39 of the height adjusting device 13 via the hanging point bracket. Next, the upper structure 1 is hung with a lifting machine ship or the like (not shown) with the hanging point metal fitting as a hanging point, and the planar positions of the jacket leg 7 and the foundation pile 5 are aligned.

  And the upper structure 1 is suspended and the foundation pile 5 is inserted in the jacket leg 7, as shown in FIG. Further, as shown in FIG. 9, the upper end of the foundation pile 5 is brought into contact with an end plate 55 fixed to the lower end of the steel pipe 39 of the height adjusting device 13, and the upper structure 1 is temporarily received by the foundation pile 5.

  After temporarily receiving the upper structure 1, the guide cap 17 (FIG. 1) installed at the upper end of the foundation pile 5a is removed, and the height adjusting device 13 is installed on the jacket leg 7a. The height adjusting device 13 is suspended and installed using a crane or the like (not shown).

  Also in the height adjusting device 13 installed in the jacket leg 7 a, the upper end of the foundation pile 5 is brought into contact with the end plate 55 fixed to the lower end of the steel pipe 39 as in the other height adjusting devices 13. Further, the flange 35 fixed to the upper end portion of the steel pipe 39 of the height adjusting device 13 is integrated with the flange 15 fixed to the upper end portion of the jacket leg 7 by using a fixture 37.

  In the state shown in FIG. 9, that is, in the state shown in FIG. 8 in which the upper structure 1 is installed on the foundation pile 5, when the portion indicated by F <b> 2 in FIG. 9 is enlarged, a broken line in FIG. The foundation pile 5 shown supports the lower steel pipe 39c via the end plate 55.

  9 is enlarged, the spherical bearing 51a fixed to the middle steel pipe 39b is placed on the spherical bearing 51b fixed to the lower steel pipe 39c, as shown in FIG. 6 (a). Is done. That is, the lower steel pipe 39c supports the middle steel pipe 39b via the spherical bearing 51 including the spherical bearing 51a and the spherical bearing 51b.

  When the foundation pile 5 is not installed vertically in the process shown in FIG. 1 and an inclined surface is generated at the top end of the foundation pile 5, the lower steel pipe 39c is formed on the inclined surface of the top end of the foundation pile 5 in the process shown in FIG. Will be placed. However, by providing the spherical bearing 51, it is possible to absorb the inclination of the foundation pile 5 and prevent the uneven load from acting on the steel pipe 39 of the height adjusting device 13.

  Furthermore, when the part shown by D2 in FIG. 9 is enlarged, as shown in FIGS. 5A and 5B, the slide jack 45 fixed to the jack pedestal 47 of the middle steel pipe 39b, A reaction force receiving base 43 fixed to the upper steel pipe 39a is placed. That is, the middle steel pipe 39b supports the upper steel pipe 39a via the slide jack 45 or the like.

  After installing the height adjusting device 13 on the foundation pile 5, the hanging metal fittings 21 are sequentially removed from the height adjusting device 13 at an appropriate time after the end of use. To remove the hanger 21, as shown in FIG. 4A, the switching device 29 is faced down to bring the pair of widening members 31 into contact, and the widened portion 27 is taken out from the steel pipe 39.

  After the height adjusting device 13 is installed on the foundation pile 5, the centering manual jack 49 shown in FIGS. 6 (a) and 7 (a) is expanded and contracted, and the tapered portion 87 of the jacket leg 7 is extended. By pressing against the inner peripheral surface, the circumferential position of the steel pipe 39 is adjusted. Thereafter, the installation height of the upper structure 1 is adjusted.

  In order to adjust the installation height of the upper structure 1, the upper structure 1 is moved up and down using the height adjusting device 13. In order to raise the upper structure 1, the slide jack 45 shown in FIG. 5A is extended and the upper steel pipe 39 a is slid upward with respect to the middle steel pipe 39 b. In order to lower the upper structure 1, the slide jack 45 is contracted, and the upper steel pipe 39a is slid downward with respect to the middle steel pipe 39b.

  Since the upper steel pipe 39a is fixed to the upper structure 1, the upper structure 1 moves up and down following the upper steel pipe 39a. In parallel with the adjustment of the installation height of the superstructure 1, the design support load is confirmed using a load meter (not shown) provided on the slide jack 45, and the overall support situation is confirmed. Good.

  After adjusting the installation height of the superstructure 1 using the height adjusting device 13, a shim plate (not shown) is installed between the foundation pile 5 and the jacket leg 7 at the position of the opening 53. A shim plate (not shown) is welded to both the foundation pile 5 and the jacket leg 7 to fix the installation height of the upper structure 1. The installation work of the shim plate (not shown) is performed using the work table 91.

  After fixing the installation height of the upper structure 1, the fixing of the flange 15 of the jacket leg 7 and the flange 35 of the steel pipe 39 by the fixture 37 is released, and the height adjusting device 13 is removed from the upper structure 1. Next, a grout seal (not shown) such as a packer is installed between the lower end of the jacket leg 7 and the foundation pile 5. Then, a grout (not shown) is injected between the jacket leg 7 and the foundation pile 5. Thereby, the upper structure 1 and the foundation pile 5 are integrated.

  Thus, according to the present embodiment, by adjusting the installation height of the upper structure 1 using the height adjusting device 13, a temporary pile other than the foundation pile 5 is not necessary, and the construction cost can be reduced. The construction period can be shortened. Moreover, the upper structure 1 in which the height adjusting device 13 is installed in the foundation pile 5 is installed by providing a hanging point metal fitting made of the flange 35, the flange 41, and the like at the upper end of the steel pipe 39 of the height adjusting device 13. In doing so, the hanging point fitting can be used as a hanging point, and the work becomes easy.

  In the present embodiment, the steel pipe 39 of the height adjusting device 13 is divided into an upper steel pipe 39a, a middle steel pipe 39b, and a lower steel pipe 39c, and a spherical bearing 51 is installed between the middle steel pipe 39b and the lower steel pipe 39c. As a result, even if an inclined surface is generated at the top end of the foundation pile 5, it is possible to prevent an uneven load from acting on the height adjusting device 13 placed on the foundation pile 5, and to apply the load of the upper structure 1 to each foundation pile. 5 can be surely communicated.

  Further, the upper end of the middle steel pipe 39b is inserted into the lower end of the upper steel pipe 39a, and the slide jack 45 is interposed between the reaction force receiving base 43 fixed to the upper steel pipe 39a and the jack receiving base 47 fixed to the middle steel pipe 39b. Is installed. Thereby, the installation height of the upper structure 1 can be adjusted by expanding and contracting the slide jack 45 and sliding the upper steel pipe 39a with respect to the middle steel pipe 39b.

  The number of jacket legs 7 fixed to the upper structure 1 is not limited to six. Regardless of the number of jacket legs 7, the height adjusting device 13 may be installed on at least four jacket legs 7 before the upper structure 1 is temporarily received by the foundation pile 5.

  In addition, the height adjusting device 13 of the present embodiment includes a flange 35 provided at the upper end of the steel pipe 39, a hanging point metal fitting including the flange 41, a slide jack 45 provided between the upper steel pipe 39a and the middle steel pipe 39b, Although all the spherical bearings 51 provided between the steel pipe 39b and the lower steel pipe 39c are provided, the structure may be installed using the height adjusting device 13 having any one of them.

  For example, a height adjusting device that has the spherical bearing 51 but does not have a hanging point fitting may be used. In this case, for example, the steel pipe 39 is divided into two, a spherical bearing 51 is provided between the upper steel pipe and the lower steel pipe, and the height adjusting jack is provided between the upper end of the steel pipe and the upper end of the upper structure. Provide.

  Further, a height adjusting device having a hanging point metal fitting but not having the spherical bearing 51 may be used. In this case, the steel pipe 39 is divided into two, a slide jack 45 is provided between the upper steel pipe and the lower steel pipe, and a hanging point fitting is provided near the upper end of the steel pipe 39.

  The hanging point fittings attached to the height adjusting device 13 do not have to have the structure shown in the present embodiment. The hanging point bracket may be a structure that can be attached to the hanging bracket and has sufficient strength to be used as a hanging point for hanging the upper structure 1.

  FIG. 10 is a view showing the vicinity of the upper end portion of another height adjustment device 13a. 10A is a cross-sectional view of the steel pipe 39 with the suspension fitting 21a attached thereto, and FIG. 10B is a cross-sectional view taken along line L-L in FIG. 10A.

  Below, the other height adjustment apparatus 13a is demonstrated using FIG. The height adjusting device 13a has substantially the same configuration as the height adjusting device 13 shown in FIG. 3 and the like, but is attached to the upper end portion of the steel pipe 39 by a hanging point metal fitting (see FIG. ) Is provided with a hanging point fitting made up of a flange 101, a flange 105, a flange 109, a reinforcing member 107, and a reinforcing member 111.

  The flange 101 is fixed to the upper end portion of the steel pipe 39 as shown in FIG. As shown in FIG. 10, the flange 101 is a circular plate material having a diameter larger than the diameter of the steel pipe 39. The flange 101 has a flat opening 103 at the center.

  The flange 105 is disposed below the flange 101 so as to protrude in the inner peripheral direction of the steel pipe 39. The flange 105 is, for example, a circular plate material, and the outer peripheral portion is fixed to the inner peripheral surface of the steel pipe 39. Like the flange 101, the flange 105 has a flat opening 103 at the center. A reinforcing member 107 having a flat cross section or the like is fixed between the flange 101 and the flange 105.

  The flange 109 is disposed below the flange 105 so as to project in the inner peripheral direction of the steel pipe 39. The flange 109 is, for example, a circular plate material, and the outer peripheral portion is fixed to the inner peripheral surface of the steel pipe 39. The flange 109 has a circular opening at the center. A cylindrical reinforcing member 111 is fixed between the flange 105, the flange 109, and the flange 101.

  10 includes a suspension member 23, a connecting portion 95, a rotating portion 97, a lock portion 99, and the like. The suspension member 23 is connected to a lifting machine ship or the like (not shown). The connecting portion 95 is a member that connects the suspension member 23 and the rotating portion 97. The rotating part 97 holds the lock part 99 rotatably. The lock part 99 has a shape in which a convex part 99b is provided at the end part of the bar 99a.

  A hanging point metal fitting composed of the flange 101, the flange 105, the flange 109, and the like is a jig for attaching the hanging metal fitting 21a to the steel pipe 39 of the height adjusting device 13a. In order to attach the suspension fitting 21a to the steel pipe 39, first, as shown in FIG. 10 (a) and FIG. 10 (b), the locking portion 99 of the suspension fitting 21a is provided on the flange 101 and the flange 105. And inserted into the flat opening 103. The inner space of the opening 103 and the reinforcing member 107 is sized so that the convex portion 99b of the lock portion 99 can be inserted.

  Then, the rotating portion 97 is rotated in the direction indicated by the arrow M in FIG. 10B, and the convex portion 99 b of the lock portion 99 is hooked on the lower surface of the flange 105. The circular opening provided in the flange 109 and the inner space of the reinforcing member 111 are sized so that the convex portion 99b of the lock portion 99 can be rotated inside.

  Even when the height adjusting device 13a is used, the height adjusting device 13a is installed on the foundation pile 5 by providing a hanging point metal fitting made of the flange 101, the flange 105, the flange 119 and the like at the upper end of the steel pipe 39. When the upper structure 1 is installed, the hanging point bracket can be used as a hanging point, and the work is facilitated.

  In the present embodiment, the upper structure 1 and the foundation pile 5 are integrated to construct the underwater structure, but the same method is integrated with the upper structure and the foundation pile at a place other than underwater. It can also be applied when building.

  The structure installation method and the preferred embodiment of the structure according to the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to this example. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

Elevated view of superstructure 1 and foundation pile 5 before being integrated A plan view of the upper structure 1 as viewed from above Sectional drawing of the upper structure 1 in the state which installed the height adjustment apparatus 13 The figure which shows the attachment / detachment method of the hanging metal fitting 21 The figure which shows the boundary part vicinity of the upper steel pipe 39a and the middle steel pipe 39b The figure which shows the boundary part vicinity of the middle steel pipe 39b and the lower steel pipe 39c The figure which shows the lower end part vicinity of the lower steel pipe 39c Elevated view with jacket leg 7 inserted into foundation pile 5 Vertical sectional view near the upper end of jacket leg 7 The figure which shows the upper end part vicinity of the other height adjustment apparatus 13a.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ......... Superstructure 3 ......... Ground 5 ......... Foundation pile 7 ......... Jack leg 11 ......... Truss part 13, 13a ......... Height adjustment device 15, 35, 41, 77a, 77b, 101, 105, 109 ......... Flange 21, 21a ......... Hanging bracket 39 ......... Steel pipe 39a ......... Upper steel pipe 39b ......... Middle steel pipe 39c ......... Lower steel pipe 42, 107, 111 ......... Reinforcing member 43 ......... Reaction force cradle 45 ......... Slide jack 47 ......... Jack cradle 51, 51a, 51b ......... Spherical bearing 55 ......... End plate 59, 75 ......... Suspension bolt

Claims (7)

A step (a) of installing a foundation pile on the ground;
An upper structure including a cylindrical leg and a main body; a cylindrical body including an upper cylindrical body and a lower cylindrical body; a spherical bearing provided at a boundary between the upper cylindrical body and the lower cylindrical body; A step (b) of installing a height adjusting device comprising an adjusting means for adjusting an installation height of the superstructure relative to a body by inserting the cylindrical body into the leg portion;
(C) inserting the foundation pile into the leg, placing the cylinder on the foundation pile, and temporarily receiving the upper structure with the foundation pile via the spherical bearing;
Step (d) of adjusting the installation height of the upper structure using the height adjusting device,
Integrating the foundation pile and the leg (e);
A method for installing a structure comprising the steps of:   The structure installation method according to claim 1, wherein the upper cylinder and the lower cylinder are connected by a suspension bolt. A step (a) of installing a foundation pile on the ground;
Adjustment to adjust the installation height of the upper structure with respect to the cylinder, the suspension fitting provided near the upper end of the cylinder, and the upper structure composed of the cylindrical leg and the main body A step (b) of installing a height adjusting device comprising means by inserting the cylindrical body into the leg portion;
The upper structure is transported using the hanging point bracket as a hanging point, the foundation pile is inserted into the leg, the cylinder is placed on the foundation pile, and the upper structure is moved by the foundation pile. A provisional step (c);
Step (d) of adjusting the installation height of the upper structure using the height adjusting device,
Integrating the foundation pile and the leg (e);
A method for installing a structure comprising the steps of: The hanging point bracket is
A first flange fixed to the upper end of the cylinder;
A second flange disposed below the first flange and fixed to the inner peripheral surface of the cylindrical body;
A reinforcing member for connecting the first flange and the second flange;
The structure installation method according to claim 3, comprising: A step (a) of installing a foundation pile on the ground;
An upper structure consisting of a cylindrical leg and a main body, a cylinder consisting of an upper cylinder and a lower cylinder, and a boundary between the upper cylinder and the lower cylinder, A height adjusting device comprising adjusting means for adjusting the installation height of the upper cylinder is installed by inserting the cylinder into the leg and fixing the upper end of the upper cylinder to the upper structure. Step (b);
Inserting the foundation pile into the leg, placing the cylinder on the foundation pile, and temporarily receiving the upper structure with the foundation pile;
A step (d) of adjusting an installation height of the upper cylinder fixed to the upper structure using the height adjusting device;
Integrating the foundation pile and the leg (e);
A method for installing a structure comprising the steps of:   6. The method of installing a structure according to claim 5, wherein the upper cylinder and the lower cylinder are connected by a suspension bolt.   A structure constructed by using the structure installation method according to any one of claims 1 to 6.

Images