JP6771980B2 - How to install the support - Google Patents

Description

The present invention relates to a cap that uses a foundation pile for erecting a support for an installation object such as a fence, a sign, or a sign on the ground, and an installation method for installing the support on the foundation pile to which the cap is attached.

Conventionally, when an installation object such as a fence, a signboard, or a sign is installed on the ground, a foundation is buried in the ground, a support for the installation is inserted into the foundation, and a support for the installation is erected on the ground.
As a method of installing the foundation, there is a method of burying a concrete block having a support hole for fixing a support on the upper surface (see, for example, Patent Document 1), but in this method, the ground is largely excavated to make a hole. There is a problem that it needs to be formed and it takes time and effort.
To solve such a problem, there is a method of driving a tubular foundation pile made of metal into the ground (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2006-299530 JP-A-2000-64306

However, in the conventional driving of foundation piles disclosed in Patent Document 2, the foundation piles are generally cylindrical, but the columns are not limited to cylindrical ones, but have rectangular cross-sections and square corners. Since tubular ones are often used, in the former case, the outer diameter of the pillar is smaller than the inner diameter of the foundation pile, and in the latter pillar, a gap is likely to occur between the foundation pile and the pillar, and the pillar is used during construction. There was a problem that it was easy to tilt and it was troublesome to adjust the position with respect to the foundation pile.
Therefore, in view of such a problem, it is an object of the present invention to provide a cap for facilitating the attachment of a support to a foundation pile and a method for installing a support using the cap.

Installation of the strut according to the present invention, there is provided a method of installing the strut of installing the post to the foundation pile the caps attached, the cap includes a ring-shaped disc, suspended piece depending from the outer periphery And a through hole that communicates the upper space of the foundation pile with the external space outside the foundation pile while being attached to the upper end of the foundation pile, and the through hole is downward from the inner peripheral edge of the disk. It is formed by a side wall surface portion formed toward the side, a lower end of the opening having an opening, and a tapered portion whose diameter gradually decreases from the side wall surface portion toward the lower end of the opening, and the upper end portion of the foundation pile is the ground. A burial step of burying the foundation pile in a protruding state, and a step of attaching the cap to the upper end portion of the foundation pile with the upper end portion of the foundation pile covered by the disk, the hanging piece, and the side wall surface portion . insertion process and installation method of the struts, characterized in that it comprises a filling step of filling the inner space of the inner foundation pile and the tapered portion in mortar for inserting a strut into the through hole provided in the cap.

According to the foundation pile cap of the present invention, since the through hole of the cap has a tapered portion whose diameter gradually decreases toward the lower end of the opening, a support material is passed through the through hole to fill a material such as cement or mortar. By filling and solidifying with, the cap will not easily come off the foundation pile.

Further, according to the method of installing the support column of the present invention, the cap attached to the foundation pile guides the support column to the position of the lower end of the opening when the support column is passed through the tapered portion, so that the support column is guided to a predetermined position and tilted. It becomes difficult to loosen and it becomes easy to attach the support to the foundation pile.

It is a perspective view for demonstrating the installation method of the foundation pile which concerns on 1st Embodiment of this invention. It is a perspective view for demonstrating the installation method of the foundation pile which concerns on 1st Embodiment of this invention. It is explanatory drawing of the main part of FIG. 2B. It is explanatory drawing of the main part of FIG. 2D. It is a top view of the main part of FIG. It is explanatory drawing of the main part of FIG. 2D.

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

(First Embodiment)
An embodiment of the method for installing a support column according to the present invention will be described with reference to FIGS. 1 and 2.

1 and 2 are diagrams for explaining a method of installing foundation piles according to the present embodiment.
First, as shown in FIG. 1A, a circular tubular foundation pile 31 is erected on a portion of the ground 20 where the foundation is to be installed, and a driving member 10 is arranged above the foundation pile 31.
Here, the driving member 10 has a narrow portion 12 having a width (diameter) D2 smaller than the width (diameter) D1 of the circular opening 33 at the upper end of the foundation pile 31 at the lower end and a width larger than the opening 33 (the width (diameter) D1). A jig having a wide portion 11 of (diameter) D3 above the narrow portion 12. Both the narrow portion 12 and the wide portion 11 are disk-shaped plate materials, and are connected in a state where the main surfaces are arranged in parallel.

Further, the driving member 10 is further arranged between the narrow portion 12 and the wide portion 11, and is arranged above the bar member 13 that connects the centers of gravity of the narrow portion 12 and the wide portion 11 and the wide portion 11. The lower end has a bar member 14 connected to the wide portion 11. Since the bar member 13 has a smaller diameter than the width D2 of the narrow portion 12, it can be inserted into the opening 33 at the upper end of the foundation pile 31 together with the narrow portion 12. The bar member 14 is a grip portion that the operator grasps by hand when arranging the driving member 10 at a predetermined position. The bar members 13 and 14 may be not separate bar members but one bar member penetrating the wide portion 11.

Next, as shown in FIG. 1B, the narrow portion 12 and the bar 13 of the driving member 10 are inserted into the opening 33 at the upper end of the foundation pile 31, and the peripheral edge of the wide portion 11 is the foundation pile 31. Push it downward until it catches on the top edge of. In this hooked state, the lower surface of the wide portion 11 abuts on the opening end surface of the upper end of the foundation pile 31, and the opening 33 at the upper end of the foundation pile 31 is covered with the wide portion 11. The narrow portion 12 is located in the foundation pile 31 without protruding from the opening at the lower end of the foundation pile 31, and divides the space in the foundation pile 31 into an upper space and a lower space.

Next, as shown in FIGS. 1 (c) and 1 (d), the upper end of the bar 14 of the driving member 10 is hit downward by a tool 30 such as a hammer, and the wide portion 11 of the driving member 10 is hit. Is pressed against the open end surface of the upper end of the foundation pile 31, so that the foundation pile 31 is pressed against the ground 20 and driven. Then, when the upper end portion 32 of the foundation pile 31 slightly protrudes from the ground 20 (FIG. 1 (d)), the driving of the foundation pile 31 is completed. If the driving member 10 can be arranged at a predetermined position by gripping the wide portion 11, the rod member 14 may not be provided on the driving member 10, and in this configuration, the upper surface of the wide portion 11 is hit by the tool 30. Then, the foundation pile 31 is driven.

Here, in the driving of the foundation pile 31, the soil in the ground gradually invades into the foundation pile 31 from the opening at the lower end of the foundation pile 31 as the foundation pile 31 penetrates deep into the ground. However, as shown in FIG. 1 (c), when the soil in the ground invades to the narrow portion 12, the narrow portion 12 presses the invaded soil downward, so that the soil in the ground is further piled up. It will not invade the inside of 31. As a result, as shown in FIG. 1D, in the foundation pile 31 that has been driven into the ground 20, all the lower spaces among the lower space and the upper space separated by the narrow portion 12 in the foundation pile 31 are all. The upper space is partially located below the ground 20 and is not filled with underground soil, while it is located below the ground 20 and is filled with underground soil.
Further, when driving the foundation pile 31, the wide portion 11 of the driving member 10 is strongly pressed against the open end surface of the upper end of the foundation pile 31. Therefore, the lower surface of the wide portion 11 that comes into contact with the open end face of the upper end of the foundation pile 31 is made of elastic resin or the like so that the pressing does not generate a loud hitting sound or damage the open end face of the upper end of the foundation pile 31. It is preferably composed of a flexible material having flexibility.

Next, as shown in FIGS. 2A and 2B, after the driving member 10 is pulled out from the inside of the foundation pile 31, the upper end portion 32 protruding from the ground 20 of the foundation pile 31 is covered from above. Attach the cap 41 as shown.

FIG. 3 is an explanatory view of the main part of FIG. 2B, and shows an enlarged vertical cross-sectional view of the vicinity of the foundation pile 31 to which the cap 41 is attached. The cap 41 has a ring-shaped disk 42 and a hanging piece 43 hanging from the outer peripheral edge thereof. When attaching the cap 41 to the upper end 32 of the foundation pile 31, the disk 42 is positioned in contact with the open end surface of the upper end of the foundation pile 31, and the hanging piece 43 is along the outer peripheral surface of the upper end 32 of the foundation pile 31. It is attached to the foundation pile 31 so that it is positioned. As a result, the open end surface of the upper end of the foundation pile 31, which is easily damaged by being pressed against the wide portion 11 of the driving member 10, is covered with the cap 41 to prevent rust from being generated near the open end surface due to rainwater or the like, and rust is generated. Even if it does, it can be made difficult to see from the outside.

The cap 41 has a through hole 44 that communicates the upper space of the foundation pile 31 with the external space outside the foundation pile 31 in a state of being attached to the upper end portion 32 of the foundation pile 31. Then, a groove portion 45 that opens downward is formed by the side wall surface portion 44a of the through hole 44, the disk 42, and the hanging piece 43. The lateral width D4 of the groove 45 is sufficiently larger than the wall thickness D5 of the foundation pile 31.

With this configuration, even if the open end surface of the upper end of the foundation pile 31 is crushed or deformed in the driving process, the cap 41 can be reliably attached to the upper end portion 32 of the foundation pile 31.

Next, as shown in FIG. 2C, the support column 50 of the installation object is inserted into the upper space in the foundation pile 31 through the through hole 44. Subsequently, as shown in FIG. 2D, a filler such as liquid cement mortar is used to fill the gap (cavity) between the support column 50 and the foundation pile 31 in the upper space inside the foundation pile 31. (Not shown) is poured in, and the upper space in the foundation pile 31 is filled with a filler. By curing the filler filled in the upper space, the support column 50 can be firmly erected on the ground 20.

In the above, in general, the filling step by the foundation pile 31 and the inserting step of the support column 50 are often performed in parallel, but the driving member 10 is pulled from the inside of the foundation pile 31 at the filling time of the filler. After being pulled out, it may be performed at any timing within the range of work hindrance.

FIG. 4 is an explanatory view of the main part of FIG. 2D, and is a vertical cross-sectional view of the main part near the center before filling the foundation pile 31 with the filler, and FIG. 5 is a vertical sectional view of the main part of FIG. It is a plan view of. The through hole 44 of the cap 41 has a tapered portion 47 whose diameter gradually decreases toward the lower end 46 of the opening.

With this configuration, when the column 50 is inserted into the foundation pile 31 through the through hole 44, even if the lower end of the column 50 comes into contact with the surface of the tapered portion 46, it is guided to the lower end 46 side of the opening. Further, the support column 50 inserted into the foundation pile 31 is restricted from moving in the lateral direction by the lower end 46 of the opening. With this configuration, the lateral alignment work of the support column 50 becomes easy. In the present embodiment, the lower end 46 of the opening of the through hole 44 has a circular shape in a plan view and is formed in the central portion in the plan view of the cap 41, so that the support column 50 can be easily guided to the central portion in the plan view of the foundation pile 31. ..

FIG. 6 is an explanatory view of the main part of FIG. 2D, and is a vertical cross-sectional view of the main part near the center after the filling material 60 is filled in the foundation pile 31. The filler 60 fills the upper space in the foundation pile 31 and fills the inside of the through hole 44 through the lower end of the opening of the tapered portion 47. In this embodiment, the filler 60 is filled to the upper end of the cap 41 and solidified. There is.

With this configuration, even if the cap 41 is to be pulled out upward, it is blocked by the filler 60 solidified in the internal space of the tapered portion 47, so that the cap 41 can be topped without using a fixture such as a screw. Directional movement is blocked.

Further, the outer side of the through hole 44 is also formed with an inclined surface portion 48 whose diameter gradually decreases toward the lower end. With this configuration, when the foundation pile 31 is filled with the filler 60, the filler 60 is easily filled between the foundation pile 31 and the inclined surface portion 48. Further, since the width D4 of the groove 45 of the cap 41 is sufficiently larger than the wall thickness D5 of the foundation pile 31, the cap 41 is easy to move in the lateral direction, but the movement in the lateral direction is also restricted. Coupled with the effect of the tapered portion 47, the cap 41 can be firmly fixed to the foundation pile 31.

As described above, the foundation pile cap of the present embodiment is a cap 41 attached to the upper end 32 of the tubular foundation pile 31 embedded in the ground 20, and hangs down from the ring-shaped disk 42 and its outer peripheral edge. The piece 43 is provided with a through hole 44 for communicating the upper space of the foundation pile 31 and the external space outside the foundation pile 31 while being attached to the upper end portion 32 of the foundation pile 31, and the disk 42 and the hanging piece 43 The upper end portion 32 of the foundation pile 31 is covered with the side wall surface portion of the through hole 44, and the through hole 44 has a tapered portion 47 whose diameter gradually decreases toward the lower end 46 of the opening. ..

With this configuration, and by filling the internal space of the tapered portion 47 with the filler 6, the cap 41 can be fixed to the foundation pile 31 without a fixture such as a screw. Further, the support column 50 can be guided to a predetermined position with respect to the foundation pile 31 and erected within a range in which the support column 50 can pass through the lower end 46 of the opening of the tapered portion 47.

As described above, the method of installing the columns of the present embodiment is a method of installing the columns 50 by inserting the columns 50 into the circular tubular foundation pile 31 buried in the ground, and the upper end portion 32 of the foundation pile 31. The burial step (FIG. 2A) in which the pile is buried so as to protrude from the ground 20, the cap step of attaching the cap 41 to the upper end 32 of the foundation pile 31 (FIG. 2B), and the cap 41 are provided. , An insertion step of inserting the support column 50 into a through hole 44 having a tapered portion 47 whose diameter gradually decreases toward the lower end 46 of the opening while communicating the upper space of the foundation pile 31 with the external space outside the foundation pile 31 (FIG. 2 (c)) and a filling step (FIG. 2 (d)) of filling the inside of the foundation pile 31 and the internal space of the tapered portion 47 with the filler 6 are included.

With this configuration, when the support column 50 is inserted into the foundation pile 31, it passes through the through hole 44 having the tapered portion 47, so that the insertion position of the support column 50 is guided to the lower end 47 of the opening of the tapered portion 47 in a plan view, and the support column 50 is inserted. After that, since the support is restricted to the lower end 47 of the opening and the support is less likely to tilt, the support can be easily erected.

Although the method of installing the foundation pile cap and the column of the present invention has been described above based on the embodiments, the present invention is not limited to these embodiments. The scope of the present invention also includes various modifications that can be conceived by those skilled in the art within the scope of the present invention.

The present invention can be widely used in the case of installing a support on a foundation pile cap for erecting a support on the ground and a foundation pile to which the cap is attached.

10 Driving member 11 Wide part 12 Narrow part 13, 14 Bar material 20 Ground 30 Tool 31 Foundation pile 32 Upper end 33 Opening 41 Cap 42 Flat plate 43 Hanging piece 44 Through hole 44a Side wall surface 45 Groove 46 Opening lower end 47 Tapered part 48 Face 50 Strut 60 Filler

Claims (1)

A foundation pile which caps are attached to a post installation method of installing a strut,
The cap
A ring-shaped disk and
A hanging piece hanging from its outer periphery,
It is provided with a through hole that communicates the upper space of the foundation pile with the external space outside the foundation pile while being attached to the upper end of the foundation pile.
The through hole is formed by a side wall surface portion formed downward from the inner peripheral edge of the disk, an opening lower end having an opening, and a tapered portion whose diameter gradually decreases from the side wall surface portion toward the opening lower end. It is a taper
A burying step of the upper end of the foundation pile is embedded in a state of protruding from the ground,
A step of attaching the cap to the upper end of the foundation pile in a state where the upper end of the foundation pile is covered by the disk, the hanging piece, and the side wall surface portion .
An insertion step of inserting a strut into the through hole provided in the cap,
A method for installing a support column, which comprises a filling step of filling the inside of the foundation pile and the internal space of the tapered portion with mortar.

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