JP2013189836A - Foundation beating metal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foundation beating metal fitting by which movement in a pile axial direction can be regulated and also movement in a direction orthogonal to the pile axial direction can be regulated.SOLUTION: An inventive foundation beating metal fitting 1 is provided with a hollow pile body 100 in which a column of a building structure is erected, and a part of the pile body 100 is buried underground. The pile body 100 includes: a ground side hollow part 110 of which a part is disposed on the ground; an underground hollow part 120 which is connected to a lower end 111 of the ground side hollow part 110 and all of which is disposed in the ground; and a tip 130 connected to a lower end 124 of the underground hollow part 120, and moving between an initial position where the tip 130 is the farthest away from the ground side hollow part 110 and a retreat position where the tip 130 most closely approaches the ground side hollow part 110. The underground hollow part 120 is expanded more than an outer peripheral wall 113 of the ground side hollow part 110 in association with movement of the tip 130 from the initial position to the retreat position.

Description

  The present invention relates to a foundation driving bracket on which a pillar of a building installed outdoors is erected.

  Conventionally, when constructing a building to be installed outdoors (for example, solar panels or various warehouses), a foundation driving bracket that forms the foundation of the building is driven into the ground, and a pillar of the building is placed on the foundation driving bracket. Has been established.

  As this type of foundation driving metal fitting, one having a spiral rib provided on the outer periphery of a cylindrical pile body is known (for example, see Patent Document 1). In the foundation driving metal fitting (hereinafter referred to as a spiral pile) provided with the spiral rib, the pile body can be buried in the ground by press-fitting to a desired position in the ground while rotating the pile body.

JP 2007-205108 A

  However, in the conventional spiral pile described above, since the spiral rib protrudes from the outer periphery of the pile body, the movement in the pile axis direction (so-called vertical direction) can be regulated by this spiral rib, but in the pile axis direction. There has been a problem that movement in an orthogonal direction (so-called horizontal direction) cannot be regulated.

  Then, this invention aims at provision of the foundation driving | running | working metal fitting which can control the motion to the direction orthogonal to a pile axial direction while being able to control the motion to a pile axial direction.

  In order to solve the above-described problems, the present invention has the following features. First, the first feature of the present invention is a foundation driving metal fitting provided with a hollow pile body (pile body 100) on which a pillar of a building is erected, and a part of the pile body is buried in the ground ( It is a foundation driving metal fitting 1), and the pile main body is connected to a ground side hollow part (ground side hollow part 110) partially disposed on the ground and a lower end (lower end 111) of the ground side hollow part, An underground hollow portion (underground hollow portion 120) that is all disposed in the ground, and an initial position that is connected to the lower end (lower end 124) of the underground hollow portion and is farthest from the ground side hollow portion; And a tip portion (tip portion 130) that moves between the retracted position closest to the ground side hollow portion, and the tip portion of the underground hollow portion moves from the initial position to the retracted position. As a result, the outer side wall (outer peripheral wall 113) of the ground side hollow part is wider than And effect.

  According to this feature, the underground hollow portion is wider than the outer wall of the ground-side hollow portion as the tip portion moves from the initial position to the retracted position. That is, since the underground hollow portion spreads in the underground in a direction (so-called horizontal direction) perpendicular to the axial direction of the pile body, the pile body is stabilized in the ground. For this reason, while being able to control the movement (for example, omission) to the axial direction (what is called up-and-down direction) of a pile main body, the movement (for example, shaking) to the direction orthogonal to an axial direction can also be controlled.

  A second feature of the present invention is a basic driving fitting according to the first feature of the present invention, wherein a moving part (moving part 140) that moves the tip part between the initial position and the retracted position is provided. The gist is to further provide.

  According to this feature, the foundation driving metal fitting further includes a moving part that moves the tip part between the initial position and the retracted position. Thereby, a front-end | tip part can be moved easily and an underground hollow part can be expanded reliably in the ground. For this reason, in addition to being able to regulate the movement of the pile main body, it is possible to easily perform the installation work (embedding work) of the foundation driving metal fittings.

  A third feature of the present invention is a foundation driving metal fitting according to the first or second feature of the present invention, wherein the underground hollow portion is along an axial direction of the pile body (pile axial direction SD). The plurality of blade portions (blade portions 121) divided by the slits (slits 121S) formed in this manner, and the plurality of blade portions protrude outward from the outer wall of the ground side hollow portion at the initial position. The gist is to have a protruding portion (protruding portion 123).

  According to this feature, the plurality of blade portions have protruding portions that protrude outward from the outer wall of the ground-side hollow portion at the initial position. Thereby, when a front-end | tip part moves to a retracted position from an initial position, it can prevent that a some blade | wing part bends inward. For this reason, several blade | wing parts (underground hollow part) can be expanded more reliably in the underground.

  A fourth feature of the present invention is a foundation driving metal fitting according to the first to third features of the present invention, wherein the pile body includes a central pile (central pile 11) located in the center, and the central pile. It is constituted by a plurality of outer piles (outer piles 12 (12 </ b> A to 12 </ b> D)) provided around, and the central pile is connected to the plurality of outer piles.

  According to this feature, the central pile is connected to the plurality of outer piles. The movement in the direction perpendicular to the axial direction of the central pile and each outer pile (so-called horizontal direction) is further restricted, and a more stable foundation driving bracket can be provided. Therefore, the building pillar is more stable, and a building having excellent stability can be constructed.

  According to the features of the present invention, it is possible to provide a foundation driving metal fitting that can regulate movement in the pile axis direction and also regulate movement in a direction orthogonal to the pile axis direction.

FIG. 1 is a perspective view showing the entire basic driving fitting according to the present embodiment. FIG. 2 is a side view showing the entire foundation driving metal fitting according to the present embodiment. FIG. 3 is a plan view showing the whole of the foundation driving metal fitting according to the present embodiment. FIG. 4 is a perspective view showing a pile body according to the present embodiment. FIG. 5A is a partial end view showing the initial position of the underground hollow portion according to this embodiment, and FIG. 5B shows the initial position of the underground hollow portion according to this embodiment. It is sectional drawing shown (AA sectional drawing of Fig.5 (a)). FIG. 6A is a partial end view showing the midpoint position of the underground hollow portion according to the present embodiment, and FIG. 6B shows the midpoint position of the underground hollow portion according to the present embodiment. It is sectional drawing (BB sectional drawing of Fig.5 (a)) shown. Fig.7 (a) is a partial end elevation which shows the retreat position of the underground hollow part which concerns on this embodiment, FIG.7 (b) shows the retreat position of the underground hollow part which concerns on this embodiment. It is sectional drawing (CC sectional drawing of Fig.5 (a)). FIG. 8 is a view for explaining a method of burying the foundation driving metal fitting according to the present embodiment.

  Next, an embodiment of a foundation driving metal fitting according to the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

(Structure of foundation driving bracket)
First, the structure of the foundation driving metal fitting 1 which concerns on this embodiment is demonstrated, referring drawings. FIG. 1 is a perspective view showing the entirety of the foundation driving metal fitting 1 according to the present embodiment. FIG. 2 is a side view showing the whole of the foundation driving metal fitting 1 according to the present embodiment. FIG. 3 is a plan view showing the entirety of the foundation driving metal fitting 1 according to the present embodiment.

  As shown in FIGS. 1 to 3, the foundation driving metal fitting 1 is used when building a building (for example, a solar panel or various warehouses) installed outdoors. The foundation driving metal fitting 1 includes a hollow pile body 100 (cylindrical in the embodiment) on which a pillar of a building is erected.

  The pile main body 100 is partially embedded in the ground, and is formed of, for example, a steel material. The pile main body 100 includes a central pile 11 located at the center and four outer piles 12 (12A to 12D) located around the central pile 11.

  A substrate (not shown) is attached to the central pile 11, and a building column is erected on the substrate. The length L11 of the central pile 11 with respect to the axial direction of the pile main body 100 (hereinafter referred to as the pile axial direction SD) is longer than the length L12 of the outer piles 12 (12A to 12D) with respect to the pile axial direction SD.

  The central pile 11 is connected to the outer pile 12 (12A to 12D) via the connecting member 20. The connecting member 20 is made of, for example, a steel material. The connecting member 20 includes a central tube portion 21, an outer tube portion 22 (22A to 22D), a connecting plate portion 23 (23A to 23D), and a reinforcing plate portion 24.

  The center cylinder part 21 and each outer cylinder part 22 (22A-22D) have a diameter larger than the diameter of the center pile 11 or each outer pile 12 (12A-12D), respectively, and the center pile 11 or each outer pile 12 (12A to 12D). The center cylinder part 21 and each outer cylinder part 22 (22A-22D) are respectively connected to the outer periphery of the center pile 11 or each outer pile 12 (12A-12D) via fixing bolts 25, 25A-25D (see FIG. 3). It is fixed.

  Each connection plate part 23 (23A-23D) has connected the center cylinder part 21 and each outer cylinder part 22 (22A-22D). Each connection board part 23 (23A-23D) is regulating the space | interval of the center pile 11 and the outer side pile 12 (12A-12D). Moreover, the reinforcement board part 24 has connected the center cylinder part 21 and each connection board part 23 (23A-23D). The reinforcing plate portion 24 regulates the arrangement of the connecting plate portions 23 (23A to 23D).

(Pile body structure)
Next, the structure of the pile main body 100 (the central pile 11 and the outer piles 12 (12A to 12D)) described above will be described with reference to the drawings. FIG. 4 is a perspective view showing the pile body 100 according to the present embodiment. 5-7 is a figure which shows the expansion state of the underground hollow part 120 which concerns on this embodiment. In the following, since the central pile 11 and the outer piles 12 (12A to 12D) have basically the same configuration, the central pile 11 (hereinafter simply referred to as a pile body 100) will be described as an example.

  As shown in FIGS. 4 to 7, the pile body 100 includes a ground-side hollow portion 110 that is partially disposed on the ground, an underground hollow portion 120 that is entirely disposed in the ground, and a ground-side hollow portion. A tip portion 130 that moves between an initial position farthest from 110 (see FIG. 5) and a retracted position closest to the ground side hollow portion 110 (see FIG. 7); A moving unit 140 that moves between them is provided.

  The ground side hollow part 110 has the same diameter with respect to the pile axial direction SD. An end surface 112 is provided at the lower end 111 of the ground side hollow portion 110 and is fixed to the inner peripheral wall of the ground side hollow portion 110. The end face 112 is formed with a bolt hole 112A through which a hexagonal bolt 141 described later is inserted.

  The underground hollow portion 120 is connected to the lower end 111 of the ground side hollow portion 110. The underground hollow portion 120 expands (expands) more than the outer peripheral wall 113 of the ground side hollow portion 110 as the distal end portion 130 moves from the initial position to the retracted position.

  The underground hollow portion 120 is configured by a plurality of blade portions 121 divided by slits 121S formed along the pile axis direction SD.

  The slits 121 </ b> S are formed in order to expand the plurality of blade portions 121 more than the outer peripheral wall 113 of the ground side hollow portion 110, and also have a role of making the plurality of blade portions 121 easy to be bent. Specifically, the slit 121S is provided with an upper folding space 122A, a central folding space 122B, and a lower folding space 122C that are formed larger than other portions (see FIG. 4). As a result, the upper folding space 122A, the central folding space 122B, and the lower folding space 122C serve as a base point to bend, and the plurality of blade portions 121 are wider than the outer peripheral wall 113 of the ground side hollow portion 110.

  The plurality of blade portions 121 have protruding portions 123 that protrude outward from the outer peripheral wall 113 of the ground side hollow portion 110 at the initial position (see FIG. 5). The protruding portion 123 is located in the central bending space 122B of the slit 121S.

  The plurality of blade portions 121 are configured by an upper side surface group 121A located on the ground side hollow portion 110 side with respect to the protruding portion 123 and a lower side surface group 121B positioned on the distal end portion 130 side with respect to the protruding portion 123. ing. The upper side surface group 121 </ b> A gradually decreases in diameter from the protruding portion 123 toward the ground side hollow portion 110. On the other hand, the lower surface group 121B gradually becomes smaller in diameter from the protruding portion 123 toward the distal end portion 130.

  The tip portion 130 is connected to the lower end 124 of the underground hollow portion 120. The tip 130 is formed in a U-shaped cross section. Specifically, the distal end portion 130 includes a horizontal plane 131 along a direction orthogonal to the pile axis direction SD (hereinafter, horizontal direction HD), and an outer frame edge 132 along the pile axis direction SD on the outer periphery of the horizontal plane 131. It is configured. The horizontal surface 131 is formed with a bolt hole 131A through which a hexagonal bolt 141 described later is inserted. A nut 142 described later is fixed to the outside of the horizontal surface 131.

  The moving part 140 includes a hexagon bolt 141 and a nut 142 fixed to the horizontal surface 131. The hexagon bolt 141 is inserted into a bolt hole 112A formed in the end surface 112 of the ground side hollow portion 110, a bolt hole 131A formed in the horizontal surface 131 of the tip portion 130, and the nut 142. At this time, the head portion 141A of the hexagon bolt 141 is in contact with the horizontal surface 131 (the edge portion of the bolt hole 131A) of the tip portion 130.

(Embedding method of foundation driving bracket)
Next, a method of burying the above-described foundation driving metal fitting 1 will be described with reference to FIGS. FIG. 8 is a view for explaining a method of burying the foundation driving metal fitting 1 according to the present embodiment.

  First, the center pile 11 and the outer pile 12 (12A to 12D) are driven into the ground. That is, as shown in FIG. 5, the central pile 11 and the outer piles 12 (12 </ b> A to 12 </ b> D) are brought into the ground by press-fitting the central pile 11 and the outer piles 12 (12 </ b> A to 12 </ b> D) to desired positions in the ground. Buried.

  Subsequently, the hexagon bolt 141 provided in the center pile 11 and the outer pile 12 (12A-12D) is gradually rotated using the jig | tool (not shown) which rotates the hexagon bolt 141. FIG. Then, as shown in FIG. 6, the front end portion 130 gradually moves toward an intermediate position (intermediate position) from the initial position to the retracted position by screwing the hexagon bolt 141 and the nut 142. At this time, the underground hollow portion 120 gradually spreads more than the outer peripheral wall 113 of the ground-side hollow portion 110.

  Next, when the hexagon bolt 141 is further rotated using the jig (not shown), as shown in FIG. 7, the tip portion 130 further moves from the midway position toward the retracted position. At this time, the underground hollow portion 120 is completely spread out from the outer peripheral wall 113 of the ground-side hollow portion 110.

  Then, as shown to Fig.8 (a), the connection member 20 is attached to the center pile 11 and the outer side pile 12 (12A-12D) which protruded on the ground. And as shown in FIG.8 (b), the center cylinder part 21 is fixed to the outer periphery of the center pile 11 using the fixing bolts 25 and 25A-25D, and the outer periphery of each outer pile 12 (12A-12D) is used. Each outer cylinder part 22 (22A-22D) is fixed.

  A pillar of a building is erected on a substrate (not shown) attached to the central pile 11 of the foundation driving metal fitting 1 buried in this manner, and a building installed outdoors can be constructed.

(Action / Effect)
In the present embodiment described above, the underground hollow portion 120 is wider than the outer peripheral wall 113 of the ground-side hollow portion 110 as the distal end portion 130 moves from the initial position to the retracted position. That is, since the underground hollow portion 120 extends in the horizontal direction HD in the underground, the pile main body 100 is stabilized in the underground. For this reason, while being able to control the movement (for example, omission) to pile axis direction SD, the movement (for example, shaking) to horizontal direction HD can also be controlled.

  In this embodiment, the foundation driving metal fitting 1 further includes a moving part 140 that moves the tip part 130 between the initial position and the retracted position. Thereby, the front-end | tip part 130 can be moved easily and the underground hollow part 120 can be expanded reliably in the ground. For this reason, in addition to being able to regulate the movement of the pile main body 100, the installation work (embedding work) of the foundation driving metal fitting 1 can also be facilitated.

  In the present embodiment, the plurality of blade portions 121 have protruding portions 123 that protrude outward from the outer peripheral wall 113 of the ground-side hollow portion 110 at the initial position. Thereby, when the front-end | tip part 130 moves to a retracted position from an initial position, it can prevent that the several blade | wing part 121 bends inward. For this reason, the several blade | wing part 121 (namely, underground underground hollow part 120) can be expanded more reliably in the underground.

  In the present embodiment, the central pile 11 is connected to each outer pile 12 (12 </ b> A to 12 </ b> D) via the connecting member 20. Thereby, the movement to the horizontal direction HD of the center pile 11 and each outer side pile 12 (12A-12D) is further controlled, and the more stable foundation drive-in metal fitting 1 can be provided. Therefore, the building pillar is more stable, and a building having excellent stability can be constructed.

  In this embodiment, the length L11 of the center pile 11 is longer than the length L12 of each outer pile 12 (12A-12D). Thereby, in addition to being able to regulate the movement of the pile main body 100, the embedding work of each outer pile 12 (12A-12D) can also be facilitated.

  In this embodiment, the connecting member 20 includes a connecting plate portion 23 (23A to 23D). Thereby, the movement to the horizontal direction HD of the pile main body 100 (swing to the up-down and left-right of FIG. 3) can further be prevented.

  In the present embodiment, the connecting member 20 includes a reinforcing plate portion 24. Thereby, the movement to the horizontal direction HD of the connecting plate part 23 (23A to 23D) (swing up and down or left and right in FIG. 3) can be prevented, and the movement of the pile body 100 in the horizontal direction HD can be further prevented.

(Other embodiments)
Although the contents of the present invention have been disclosed through the embodiments of the present invention as described above, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  For example, the embodiment of the present invention can be modified as follows. Specifically, the case where a building is constructed has been described. However, the present invention is not limited to this, and when the foundation-driving bracket 1 embedded by destroying the building is pulled out from the ground, The hollow portion 120 (the plurality of blade portions 121) may move in the opposite direction to the embedding method. That is, the underground hollow portion 120 may be restored (reduced) to the original position as the distal end portion 130 moves from the retracted position to the initial position.

  Although the pile main body 100 was demonstrated as what was formed in the cylindrical shape, it is not limited to this, What is necessary is just hollow shape, for example, a triangular cylinder shape and a square cylinder shape may be sufficient.

  Moreover, although the length L11 of the center pile 11 demonstrated as what was longer than the length L12 of the outer side pile 12 (12A-12D), it is not limited to this, The outer side pile 12 (12A-) 12D) may be equal to the length L12, or may be shorter than the length L12 of the outer pile 12 (12A to 12D).

  Moreover, although the pile main body 100 demonstrated as what was provided with the moving part 140, it is not limited to this, If the front-end | tip part 130 can be moved between an initial position and a retreat position, the moving part 140 will not necessarily be sufficient. It does not have to be provided. For example, the underground hollow portion 120 may expand by stopping the distal end portion 130 at a desired position in the ground and continuing to press-fit the ground side hollow portion 110.

  Moreover, although the underground hollow part 120 was demonstrated as what was comprised by the some blade | wing part 121 divided | segmented by the slit 121S, it is not limited to this, From the outer peripheral wall 113 of the ground side hollow part 110 As long as the configuration can be expanded.

  In addition, although it has been described that the slit 121S is provided with the upper folding space 122A, the central folding space 122B, and the lower folding space 122C, which are the base points where the plurality of blade portions 121 are bent, the present invention is limited to this. It is not a thing and each space does not need to be provided. For example, the slit 121S may be provided with a portion connecting the slits 121S to a base point where the plurality of blade portions 121 are bent (for example, a portion where the thickness of a groove, a notch, or the like is reduced), and a hinge mechanism or the like is provided. It may be.

  Moreover, although the some blade | wing part 121 demonstrated as what has the protrusion part 123 which protrudes outward rather than the outer peripheral wall 113 of the ground side hollow part 110 in an initial position, the protrusion part 123 needs to protrude necessarily. Instead, it may be provided at a position substantially equivalent to the outer peripheral wall 113 of the ground side hollow portion 110.

  Moreover, although the underground hollow part 120 was demonstrated as what was provided in the front-end | tip side in the underground of the pile main body 100, it is not limited to this, What is necessary is just to be provided in the underground. . For example, the underground hollow portion 120 may be provided in an intermediate portion of the pile body 100. In this case, a tip portion 130 (expansion / contraction means) as a means for expanding the underground hollow portion 120 is provided in the central portion of the pile main body 100.

  Moreover, although the pile main body 100 was demonstrated as what is comprised by the center pile 11 and the four outer piles 12 (12A-12D), it does not necessarily need to be the four outer piles 12 (12A-12D), and 1 The some outer pile 12 (12A-12D) may be sufficient. In addition, the pile main body 100 does not necessarily need to be comprised by the center pile 11 and the outer side pile 12 (12A-12D), and may be comprised only by the center pile 11. FIG.

  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 1 ... Foundation driving metal fitting 11 ... Central pile 12 (12A-12D) ... Outer pile 20 ... Connecting member 100 ... Pile main body 110 ... Ground side hollow part 120 ... Underground hollow part 121 ... Blade | wing part 121S ... Slit 123 ... Projection part 130 ... tip part 140 ... moving part SD ... pile axis direction HD ... horizontal direction

Claims (4)

A hollow pile body in which a pillar of a building is erected is provided, and a part of the pile body is a foundation driving metal fitting embedded in the ground,
The pile body is
A ground side hollow part partially disposed on the ground;
The underground hollow portion connected to the lower end of the ground side hollow portion, all of which are disposed in the ground,
It is connected to the lower end of the underground hollow portion, and includes a tip portion that moves between an initial position that is farthest from the ground side hollow portion and a retreat position that is closest to the ground side hollow portion,
The foundation embedded metal fitting, wherein the underground hollow portion is wider than an outer wall of the ground side hollow portion as the tip portion moves from the initial position to the retracted position. The foundation-dried metal fitting according to claim 1,
A foundation driving metal fitting, further comprising a moving part that moves the tip part between the initial position and the retracted position. The foundation-dried metal fitting according to claim 1 or 2,
The underground hollow portion is constituted by a plurality of blade portions divided by slits formed along the axial direction of the pile body,
The plurality of blade portions have a projecting portion projecting outward from the outer wall of the ground side hollow portion at the initial position. The foundation-dried metal fitting according to any one of claims 1 to 3,
The pile body is
A central pile located in the center;
It is constituted by a plurality of outer piles provided around the central pile,
The center pile is connected to a plurality of the outer piles.

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