JPS6013088B2 - Top-shaped pile installation method - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention has an inverted cone-shaped body that becomes narrower toward the bottom and a
This invention relates to a construction method for installing top-shaped piles, which are made up of a vertically protruding ball leg at the center of the lower end of a cylindrical piece.

(Prior art) Top-shaped piles exhibit a scale-settling effect by balancing the weight of the pile itself and the overlay load that the pile receives, and the combined force of the ground reaction force and frictional resistance generated in the body and pivot legs. It is used as a basic component in the ground reinforcement and stabilization method disclosed in Japanese Patent Publication No. 56-50054.

In the conventional installation method, the top-shaped piles arranged in multiple rows on the front, rear, left, and right sides only touch the sides of the body.
were not interconnected.

(Problem to be solved by the invention) Therefore, when the overload applied to a group of top-shaped piles is uneven, a part of the group of top-shaped piles that receives uneven load may be tilted or It may sink.

In this way, when the bag brain of a top-shaped pile is not kept vertical and the body side of a top-shaped pile is not arranged symmetrically with respect to the vertical line, the vertical component of the ground reaction force is applied to the body side of each pile to prevent subsidence. buoyancy force and cancel the horizontal component forces mutually.
As a result, it was not possible to fully achieve the anti-sinking characteristics of top-shaped piles.

Therefore, an object of the present invention is to provide a top-shaped pile that can maintain the forehead and chest of each top-shaped pile in a vertical state even when the top load is applied unevenly, and can accurately prevent uneven settlement of a group of top-shaped piles. The purpose is to provide a laying method. (Means for solving problems)
The gist of the top-shaped pile installation method of the present invention will be explained below using the reference numerals in the attached drawings. A horizontal support member 4 is mounted on the upper surface of the bodies 1 of the top-shaped piles a, a..., and a vertical support member 5 is placed above the bodies 1 of the top-shaped piles a, a... adjacent in the front and rear longitudinal direction. The vertical support member 5 is connected to the hook 3 which is arranged to cross over the support member 4 and provided on the upper surface of the body 1 of each top-shaped pile a, a, . . . .

(Function) Top-shaped piles a laid in multiple rows in the front, back, left, and right as described above,
On top of a..., earth and sand is backfilled so as to cover the horizontal support member 5 and the vertical support member 5 as well.

When the top load is applied unevenly to the ground 6 in which the top type piles are buried, the horizontal support members and the vertical Through the intervention of the support village 5, the load is transferred to each top-shaped pile a, a...
The top-shaped piles a, a are dispersed into adjacent top-shaped piles a and a before and after t.
... are mutually connected by the vertical support members, so that a part of the top-shaped piles a, a, ... will not locally sink significantly or be laid diagonally.

(Embodiment) In the illustrated embodiment, the vertical support member 5 is a pair of angle-shaped sections arranged in parallel, which are connected and fixed together by a channel-shaped member that also serves as a washer for a nut 7.

The upper threaded portion of the hanging rod 6, whose lower end is hooked to the hook 3 on the upper surface of the body 1 of the top-shaped stake a, projects upward from the vertical hole provided in the channel-shaped member.

Is there a nut on the thread? By screwing them together, the vertical hole member 5 is prevented from moving upward, and the L top-shaped piles a, a...
connected to. The lateral support member 4 is disposed between the hanging rods 6, 6, and due to the loose vertical attachment of the nut 7, the lateral support member 4 is horizontal on the body 1 of the top-shaped pile as shown in FIG. Even if it moves, the lateral support member tortoise is prevented from coming off the upper surface of the fuselage 1.

It should be noted that materials other than concrete, such as plastic, can be used as the forming material for top-shaped piles.In order to maximize the elutriation sinking properties of top-shaped piles, ``top-shaped piles should be shaped so that the top surface of the torso is horizontal. It is optimal that the angle & that the side surface of the body 1 makes with the horizontal plane when the pile a is stacked is 45 degrees.

(Effects of the Invention) As described above, in the installation method of the present invention, a top is constructed of an inverted zenigata-shaped body that is narrowed down to the bottom of the t and a pivot leg 2 that is vertically protruded from the center of the lower end of the body. Type pile a, a.

A plurality of ... are installed in parallel in the front, back, left and right, and horizontally adjacent top-shaped piles ag a... are installed in horizontal support members & on the upper surface of the arm body of the top-shaped piles ag a..., which are adjacent in the front and rear vertical directions. Pine, a…
A vertical member 5 is arranged above the body of the top to cross over the horizontal support member 4, and the body 1 of each top-shaped pile a, a...
Since the vertical support section 5 is connected to the hook 3 installed on the upper surface, even if the top load is uneven, some of the top-shaped pile groups a, a, etc. will not sink significantly locally. Without tilting, the pivot legs 2 of each top-shaped pile a, a... are maintained in the originally installed vertical state. Therefore, each top-shaped pile a...
? The sides of the body 1 of the pile a are held in a symmetrical position with respect to the vertical line, making it possible to fully utilize the key sinking characteristics of the top-shaped pile a.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of a top-shaped pile in a state in which it is installed, with a portion shown in longitudinal section. FIG. 2 is a side view of the top-shaped pile in an installed state, and a plan view of the same installed state as shown in FIG. a... Top-shaped pile, 1... Body, 2... Rock legs, 3... Hook 4... Lateral support village,
5... Vertical support member, 6... Hanging rod, 7... Nut, g...
ground. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. A plurality of top-shaped piles a, a... with pivot legs 2 vertically protruding from the center of the lower end of the inverted cone-shaped body 1 that becomes thinner towards the bottom are installed in parallel in the front, back, left and right, and A horizontal supporting member 4 is mounted on the upper surface of the body 1 of the adjacent top-shaped piles a, a..., and a vertical member 5 is placed above the body 1 of the top-shaped pile a, a... adjacent in the front and rear longitudinal direction. A construction method for installing top-shaped piles in which the longitudinal member 5 is connected to the hook 3 which is arranged in a crosswise manner on the support member 4 and planted on the upper surface of the body 1 of each top-shaped pile a, a.