Pile and construction method, construction device and construction tool for the same

Abstract

To provide a pile which prevents the lowering of strength of a pile head plate and the deformation and damage of the pile head plate, when the pile provided with the pile head plate is installed, and a construction method, a construction device and a construction tool for the same.SOLUTION: A construction method for installing a pile 10 provided with a pile head plate 12 into the ground includes steps of: engaging a first engagement part 21h of a construction tool 20 with a first engaged part 11p formed on the outer periphery of the pile 10; engaging a rotation cap 30 mounted on a pile driver with the construction tool 20; and rotating the construction tool 20 and installing the pile 10 into the ground.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a pile, a construction method thereof, a construction device, and a construction tool. [Background technology]

[0002] A pile may be provided with a flange-shaped pile head plate that is necessary when joining a column or a beam, etc. In one conventional method for driving such a pile with a pile head plate into the ground, a through hole (511) is provided in the pile head plate (51), a rotary press-in jig (comprising a steel pipe (42) and a plate (52) welded to the steel pipe (42)) is attached by joining with a bolt (63), and the pile is rotary-pressed in (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-134016 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the conventional construction methods described above have the following problems: (i) when columns and beams are joined to the pile head plate after the piles have been driven, through holes for joining the columns and beams must be made in the pile head plate in addition to the through holes, which increases the number of through holes in the pile head plate and reduces the strength of the pile head plate; and (ii) during rotational penetration, a great force is applied to the pile head plate, which may cause deformation or damage to the pile head plate.

[0005] Therefore, an object of the present invention is to provide a pile having a pile head plate, and a construction method, construction equipment, and construction tools that do not pose a risk of reducing the strength of the pile head plate or deforming or damaging the pile head plate when driving the pile. [Means for solving the problem]

[0006] One aspect of the present invention is a construction method for driving a pile having a pile head plate into the ground, A step of engaging a first engaging portion of the construction tool with a first engaged portion formed on an outer periphery of the pile; Rotating the construction tool to drive the pile into the ground; This is a pile construction method having the above-mentioned features.

[0007] According to this construction method, the pile can be driven by applying a force for rotary pressing to the first engaged portion, so there is no risk of reducing the strength of the pile head plate or deforming or damaging the pile head plate.

[0008] The pile construction method as described above may further include a step of engaging a rotating cap attached to the pile driver with the construction tool, and rotating the construction tool via the rotating cap using the pile driver to drive the pile into the ground.

[0009] In the above-mentioned pile installation method, the second engaging portion of the rotating cap may be engaged with a second engaged portion formed on the installation tool.

[0010] Another aspect of the present invention is a construction tool for driving a pile having a pile head plate into ground, A first engaging portion that engages with a first engaged portion formed on the outer periphery of the pile; The construction tool has a second engaged portion that engages with a second engaging portion formed on the pile driver side.

[0011] The above-mentioned construction tool may be formed by combining construction tool components which can be separated in the radial direction of the pile.

[0012] The application tool as described above may be annular.

[0013] The above-mentioned application tool may be formed by combining equally divided half-shaped application tool components in an annular shape.

[0014] The above-mentioned application tool may have a structure in which the combined application tool components are fastened by a fastening member.

[0015] The above-mentioned application tool may have a structure including a plurality of plate-like members and a rib member that joins these plate-like members.

[0016] The above-mentioned construction tool may be formed in a size that allows it to be covered by a rotating cap that is attached to a pile driver.

[0017] Another aspect of the present invention is a pile to be driven into ground, This pile has a pile head plate and a protruding engaged portion is formed on the outer periphery other than the pile head plate.

[0018] The above-mentioned pile may have a plurality of engaged portions arranged at equal intervals in the circumferential direction.

[0019] Another aspect of the present invention is a method for producing a A pile having a pile head plate and a first engaged portion formed on a portion of the outer periphery other than the pile head plate; A construction tool having a first engaging portion formed on the inner periphery side and a second engaged portion formed on the outer periphery side, which engage with the first engaged portion of the pile, and a construction tool component that can be separated in the radial direction of the pile; A rotating cap having a size capable of accommodating all or at least a part of the application tool and having a second engaging portion that engages with a second engaged portion of the application tool; A pile driver that rotates the rotating cap; The pile and its construction equipment are composed of the above. Effect of the Invention

[0020] According to the present invention, it is possible to provide a pile having a pile head plate, which does not reduce the strength of the pile head plate or cause deformation or damage when driving the pile, and a construction method, construction equipment, and construction tools thereof. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a diagram showing a pile and its construction equipment in one embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view showing an example of a construction tool formed by combining a set of construction tool components. [Diagram 3] (A) is a plan view showing an example of the shape of a construction tool component, (B) is a front view showing an example of the shape of a construction tool component seen from the opposing surface, (C) is a right side view of the construction tool component, and (D) is a rear view of the construction tool component. [Figure 4] 1A is a plan view, FIG. 1B is a front view, FIG. 1C is a right side view, and FIG. [Diagram 5] 3 is a diagram showing only a cross section of the construction tool component taken along line VV in FIG. 2. [Figure 6] 13 is a diagram showing the appearance of placing a rotating cap on a pile and a construction tool attached to its outer periphery. FIG. [Figure 7] A diagram showing the pile with a rotating cap placed around its outer periphery. [Figure 8] FIG. 13 is a diagram showing a state when the rotating cap is rotated. [Figure 9] FIG. 2 is a half-sectional view showing an example of a pile with a large diameter and construction equipment corresponding to the pile. [Figure 10] FIG. 11 is a half-sectional view showing an example of a pile having a larger diameter and a construction device corresponding to the pile. [Figure 11] Showing another form of rotary penetration pile, (A) a view (front view) seen from an angle where the first engaged part is located on the left and right, and (B) a view (side view) seen from an angle where the first engaged part is located in front. [Figure 12] Showing yet another form of a rotary penetration pile, (A) a view (front view) seen from an angle where the first engaged part is located on the left or right, and (B) a view (side view) seen from an angle where the first engaged part is located in front. [Figure 13]Showing yet another form of a rotary penetration pile, (A) a view (front view) from an angle where the first engaged part is located on the left and right, (B) a view (side view) from an angle where the first engaged part is located in front, (C) a plan view, and (D) a bottom view. [Figure 14] 1A to 1I are diagrams showing rotary driving piles with different pile diameters and pile head plate diameters. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] BEST MODE FOR CARRYING OUT THE DISCLOSURE Hereinafter, a pile, a construction tool, a rotating cap, a construction device, and the like according to the present invention will be described in detail based on an example of an embodiment shown in the drawings (see Figs. 1 to 14, etc.).

[0023] [Pile] The pile of this embodiment has a pile head plate 12 and is a type of steel pipe pile called a flanged pile that is driven into the ground. Hereinafter, in this embodiment, it will be referred to as a "rotary penetration pile" and indicated by the reference symbol 10 in the drawings. In the portion of this rotary penetration pile 10 other than the pile head plate 12, a first engaged portion is formed, for example, consisting of a protruding rotation piece 11p. The first engaged portion is formed so that the construction tool 20 is engaged with the rotary penetration pile 10. The rotation piece 11p of this embodiment constituting the first engaged portion is provided so as to protrude radially outward by welding a protrusion having a substantially rectangular parallelepiped shape to the outer circumferential surface of the rotary penetration pile 10 (see FIG. 1, etc.). It is preferable that at least two rotation pieces 11p are formed. In addition, when two or more rotation pieces 11p are formed, it is preferable that they are arranged at equal intervals along the circumferential direction. In this embodiment, two rotation pieces 11p are arranged at 180° intervals so that torque is transmitted evenly (see Fig. 1 and Fig. 13). Although not particularly shown, when three or more rotation pieces 11p are used, the number of divisions of the construction tool 20 (in other words, the number of construction tool components 24 constituting the construction tool 20) described later and the arrangement of the rotation pieces 11p are adjusted, and the number of rotation pieces 11p provided on each construction tool component 24 is set to the same number (one or more) for all construction tool components 24, which is preferable because the load applied to each construction tool component 24 is uniform. In addition, the size of the rotation piece 11p may be changed according to the outer diameter of the rotary penetration pile 10. As the rotary penetration pile 10, various types of piles with different pile diameters and pile head plates with different diameters can be adopted according to the properties of the columns and beams to be joined and the ground (see Fig. 14).

[0024] [Processing tools] The construction tool 20 is configured as a jig used when driving the rotary penetration pile 10 equipped with the pile head plate 12 into the ground, and transmits the torque of the pile driver 40 transmitted via the rotating cap 30 to the rotary penetration pile 10, which is then rotary pressed in and buried. By transmitting the torque to the rotary penetration pile 10 using such construction tool 20 and rotating cap 30, it becomes possible to construct the rotary penetration pile 10 without applying force to the pile head plate 12.

[0025] The specific configuration of the construction tool 20 is not particularly limited, but in this embodiment, a construction tool 20 is used that is formed by combining a plurality of construction tool components 24 and that forms a ring when combined (see Figs. 1 and 2). This construction tool 20 can be split in the radial direction of the rotary penetration pile 10, and can be attached and detached to the outer periphery of the rotary penetration pile 10. In this embodiment, a construction tool 20 is used that is formed by combining a pair of construction tool components 24, each having a half-split shape that is half of a ring shape, with the opposing surfaces 24s butted against each other. The construction tool components 24 that constitute the construction tool 20 are provided with a first engaging portion 21h and a second engaged portion 22p (see Fig. 3, etc.).

[0026] The first engagement portion 21h is provided so as to engage with the rotation piece 11p formed on the outer periphery of the rotary penetration pile 10. In this embodiment, a substantially rectangular recess is provided on the inner periphery of the construction tool component 24 so as to receive and lock the rotation piece 11p protruding radially outward, and this serves as the first engagement portion 21h that engages with the rotation piece 11p (see Figs. 3, 5, etc.).

[0027] The second engaged portion 22p is provided so as to engage with the second engaging portion 32h of the rotating cap 30. In this embodiment, a rod-shaped protrusion protruding radially outward is provided on the outer circumferential surface of the processing tool component 24, and serves as the second engaged portion 22p with which the second engaging portion 32h engages (see FIG. 3, etc.). In the processing tool 20 of this embodiment, a total of two second engaged portions 22p are disposed at intervals of 180° on each of the outer circumferential surfaces of the two processing tool components 24.

[0028] The construction tool component 24 of this embodiment constituting the construction tool 20 as described above has a structure including a plurality of plate-like members 25. The plate-like members 25 are semi-annular, and a plurality of, for example, three, are arranged vertically to form a three-layer structure (see FIG. 3). These plate-like members 25 may also be joined by rib members 26 arranged in the vertical direction (see FIG. 4). The construction tool component 24 and construction tool 20 having the structure including the plate-like members 25 as described above are well-balanced and preferable in terms of strength, light weight, and cost.

[0029] The construction tool 20 is structured such that the assembled construction tool components 24 are fastened together by a fastening member. The fastening member is, for example, a through-bolt 28 passed through a fastening ring portion 27 provided on the upper surface of the construction tool components 24 (see FIG. 2). Such fastening ring portion 27 and through-bolt 28 may be used as a member for hooking and locking a lifting member (not shown) for raising the rotary penetration pile 10 during construction.

[0030] The application tool 20 is formed so that its outer diameter is smaller than the inner diameter of the rotating cap 30, so that the rotating cap 30 can be placed over the application tool 20 from above (see FIG. 1, etc.).

[0031] [Rotation Cap] The rotating cap 30 is a member formed to engage with the construction tool 20 and transmit torque and force from the pile driver 40 to the rotary penetration pile 10 via the construction tool 20. The specific shape and structure of the rotating cap 30 are not particularly limited, but as an example, the rotating cap 30 of this embodiment is configured as a cylindrical member with an open bottom (see FIG. 6, etc.). The upper surface 31 of the rotating cap 30 is provided with an attachment portion 33 for detachably mounting the rotating cap 30 to the pile driver 40 in the form of an attachment. The rotating cap 30 is also provided with a second engagement portion 32h.

[0032] The second engaging portion 32h is formed on the rotating cap 30 so as to engage with the second engaged portion 22p of the construction tool 20. In this embodiment, an inverted L-shaped notch consisting of a vertical groove and a circumferential horizontal groove is provided on the bottom edge of the rotating cap 30, and serves as the second engaging portion 32h (see FIG. 6, etc.). When the rotating cap 30 is placed on the construction tool 20, the second engaged portion 22p of the construction tool 20 enters the vertical groove of the second engaging portion 32h (see FIG. 7). From this state, when the rotating cap 30 is rotated, for example, in the right-handed screw direction (clockwise), the second engaged portion 22p moves relatively through the horizontal groove of the second engaging portion 32h and is locked when it hits the horizontal groove (see FIG. 8). After that, when the rotating cap 30 is rotated clockwise, the construction tool 20 and the rotary penetration pile 10 rotate together.

[0033] The rotating cap 30 is formed so that its inner diameter is larger than the outer diameter of the construction tool 20, so that it can be placed over the construction tool 20 (see FIG. 6, etc.). In addition, the rotating cap 30 has a sufficient height so as not to interfere with the pile head plate 12 of the rotary penetration pile 10 when placed over the construction tool 20 (see FIG. 7, etc.).

[0034] [Construction equipment] The construction tool 20, the rotary cap 30, and the like as described above constitute a construction device 100 for the rotary penetration pile 10 (see Figs. 1 and 6).

[0035] An example of a method for constructing the rotary penetration pile 10 using the construction tool 20 and the rotary cap 30 as described above or the construction equipment 100 composed of these will be described. First, the construction tool component 24 is attached to the part of the outer circumference of the rotary penetration pile 10 where the rotation piece 11p is located, and the first engagement part 21h is engaged with the rotation piece 11p. In this state, the through bolt 28 is passed through the fastening ring part 27 provided on the upper surface of the construction tool component 24, and the construction tool components 24 are fastened together, so that the construction tool 20 is fixed to the outer circumference of the rotary penetration pile 10 (see FIG. 2, etc.). If the above steps are performed with the rotary penetration pile 10 in a downed state, a lifting member (not shown) is hooked to the fastening ring part 27 or the through bolt 28, and the rotary penetration pile 10 is raised at the construction site. Thereafter, the rotary cap 30 attached to the pile driver 40 is placed over the construction tool 20 from above, and the second engaging portion 32h of the rotary cap 30 is engaged with the second engaged portion 22p of the construction tool 20 (see Figs. 7 and 8). Then, the pile driver 40 rotates the construction tool 20 via the rotary cap 30 to drive the rotary penetration pile 10 into the ground. When driving is completed, the pile driver 40 rotates the rotary cap 30 counterclockwise to disengage the second engaging portion 32h of the rotary cap 30 from the second engaged portion 22p, and the rotary cap 30 is removed. Then, the through bolt 28 is removed, and the construction tool 20 is separated and removed from the rotary penetration pile 10.

[0036] According to the above-mentioned construction tool 20 and rotating cap 30, and also according to the construction method utilizing these, a rotational force can be applied to parts of the rotary penetration pile 10 other than the pile head plate 12, so there is no risk of reducing the strength of the pile head plate 12 or deforming or damaging the pile head plate 12.

[0037] Incidentally, the above-described embodiments are merely preferred examples of the present invention and are not limited thereto. Various modifications can be made without departing from the gist of the present invention. For example, although not mentioned in the above-described embodiments, the construction tool 20 may be composed of a plurality of types of construction tool components 24 having the same outer diameter and different inner diameters according to the size of the outer diameter D of the rotary penetrated pile 10 (see FIGS. 1, 9, and 10. In FIGS. 1, 9, and 10, cases where the outer diameters of the rotary penetrated piles 10 are D1, D2, and D3 (D1 < D2 < D3), respectively, are shown). By making the size of the construction tool 20 into a plurality of types in this way, it is possible to absorb the difference in the outer diameter D of the rotary penetrated pile 10 and to cope with it with the same rotary cap 30 in any case.

[0038] In the above-described embodiment, the case where the first engaged portion of the rotary penetrated pile 10 is the protruding rotary piece 11p has been described, but this is merely a preferred example. In addition, a concave depression may be used as the first engaged portion (see FIG. 11), or a hole may be used as the first engaged portion (FIG. 12). Although not particularly shown, in this case, the first engaging portion 21h of the construction tool 20 will be composed of a protrusion or the like that engages with these depressions or holes. In short, as long as the configuration can hold the rotary penetrated pile 10 and the construction tool 20 in an engaged state, the unevenness may be reversed compared to this embodiment.

[0039] In the above-described embodiment, the rotary penetrated pile 10 has been described as a steel pipe pile, but this is also merely a preferred example. In addition, other types of piles such as concrete piles and wooden piles may be targeted.

Industrial Applicability

[0040] The present invention is suitable for application to piles, their construction methods, construction equipment, and construction tools.

Explanation of Reference Numerals

[0041] 10... Rotary penetrated pile (pile) 11p... Rotary piece (first engaged portion) 12... Pile head plate 20... Construction tool 21h...First engagement portion 22p...second engaged portion 24...Construction tool components 24s…Opposite surface 25...Plate-shaped member 26…Rib member 27…Fastening ring part 28...Through bolt (fastening member) 30...Rotating cap 31…Top surface 32h…Second engagement part 33…Attachment part 40...Pile driver 100…Construction equipment

Claims

1. A construction method for driving a pile having a pile head plate into ground, comprising: A step of engaging a first engaging portion of a construction tool with a first engaged portion formed on an outer periphery of the pile; Rotating the construction tool to drive the pile into the ground; A pile construction method comprising the steps of:

2. 2. The pile construction method according to claim 1, further comprising a step of engaging a rotating cap attached to a pile driver with the construction tool, and rotating the construction tool via the rotating cap using the pile driver to drive the pile into the ground.

3. The pile installation method according to claim 2 , further comprising the step of: engaging a second engaging portion of the rotating cap with a second engaged portion formed on the installation tool.

4. A construction tool for driving a pile having a pile head plate into the ground, A first engaging portion that engages with a first engaged portion formed on the outer periphery of the pile; A construction tool having a second engaged portion that engages with a second engaging portion formed on the pile driver side.

5. The construction tool according to claim 4 , which is formed by combining construction tool components which can be separated in the radial direction of the pile.

6. The application tool according to claim 5 , which is annular.

7. The application tool according to claim 6 , wherein the application tool components are formed by assembling equally divided halves of the application tool in an annular shape.

8. The application tool according to claim 5 , wherein the combined application tool components are fastened by a fastening member.

9. The application tool according to claim 5 , which has a structure including a plurality of plate-like members and a rib member that joins these plate-like members.

10. The construction tool according to any one of claims 5 to 7, which is formed to a size such that it can be covered by a rotating cap attached to a pile driver.

11. A pile to be driven into the ground, A pile having a pile head plate and a protruding engaged portion formed on the outer periphery other than the pile head plate.

12. The pile according to claim 11 , wherein the plurality of engaged portions are arranged at equal intervals in the circumferential direction.

13. A pile having a pile head plate and a first engaged portion formed on a portion of the outer periphery other than the pile head plate; A construction tool having a first engaging portion formed on the inner periphery side and a second engaged portion formed on the outer periphery side, which engage with the first engaged portion of the pile, and a construction tool component that can be separated in the radial direction of the pile; A rotating cap having a size capable of accommodating all or at least a part of the application tool and having a second engaging portion that engages with the second engaged portion of the application tool; A pile driver that rotates the rotating cap; The pile and its construction equipment.

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