JPS5830833Y2 - pile fittings - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pile joint for connecting a large-diameter upper pile and a small-diameter lower pile.

When a horizontal force acts on a pile driven into the ground, the moment acting in a range of about 10 meters from the ground surface becomes large.

Therefore, in order to deal with this, it is better to use large-diameter piles for the upper piles and small-diameter piles that can provide sufficient support for the lower piles than to use the same large-diameter piles for all the upper piles. Economical.

For this reason, a joint with an inverted truncated conical shape has been developed to connect a large-diameter upper pile and a small-diameter lower pile, but in this case, since the pile diameters are different, there is a gap between the pile and the joint. Furthermore, it is difficult to position the two piles, and when the piles are driven in, a large amount of resistance tends to occur at the joint.

In view of the above-mentioned drawbacks, the present invention was devised in order to provide a device that facilitates the above-mentioned positioning and prevents large resistance from being generated here when driving piles, and its gist is the opposite. An upper seat plate is attached to the upper end opening of the truncated conical cylinder, and a lower seat plate is attached to the lower end opening, and a plurality of rib plates are arranged between the upper seat plate and the lower seat plate. A mounting piece protruding from the upper surface is disposed on the outer periphery of the upper seat plate, and a mounting piece protruding from the lower face is disposed on the outer periphery of the lower seat plate, with the protruding portions being pushed outward and installed. The pile joint is characterized in that, while positioning is performed using the pieces as guides, a large-diameter upper peg is connected to the upper seat plate, and a small-diameter lower peg is connected to the lower seat plate.

Hereinafter, the present invention will be explained in detail based on the illustrated embodiment. In the figure, 1 is a cylinder formed in the shape of an inverted truncated cone, and a hollow upper plate 4 is connected to the upper end opening of the cylinder through a support 2. but,
Hollow lower seat plates 5 are attached to the lower end openings via supports 3, respectively.

This upper seat plate 4 is mounted on the upper surface of the lower end joint fitting B of A.
The lower surface of the lower plate 5 is used to connect the upper end joint fittings of the lower plate C to the lower surface by welding or the like. The reason why the diameter of the upper pile A gradually decreases downward is that when applying impact force to the head of the upper pile A and driving it into the ground, this impact force can be easily transmitted downward, and this This is to prevent large resistance from occurring between the outer circumferential surface of the cylindrical body 1 and the ground.

6, 6... are the upper and lower seat plates 4, 5 in the cylinder 1.
The rib plate placed in between is a reinforcing material and is intended to provide sufficient strength and reduce weight.

7.7... is the outer periphery of the above-mentioned upper seat plate 4, a mounting piece fixed to the support body 2 so as to protrude from the upper surface thereof;
Reference numerals 8, 8, . . . are mounting pieces attached to the support body 3 so as to protrude from the lower surface of the lower plate 5, and these mounting pieces 7, 7, . . . 8, 8... are for positioning the upper peg A connected to the upper plate 4 and the lower peg C connected to the lower plate 5, and are bent into a dogleg shape and their protruding parts are It is pushed outward so that welding can be performed here.

That is, the lower end of the upper pile A is attached to the mounting pieces 7, 7...
Using the guide as a guide, insert the upper end of the lower peg C into the mounting piece 8゜8.
. . . is used as a guide to position the upper peg A and the lower peg C by fitting them into these guides, and then positioning the upper peg A and the lower peg C to connect them. Also, during this connection, the mounting piece 7
, 7... From above, the mounting piece 8° 8...
Welding etc. are performed on the inside of each from below.

Next, an example of use of the present invention will be explained.

First, several small-diameter lower piles C are driven into the ground, connecting several pieces as necessary, and the pile joint according to the present invention is attached to the upper end of the lower pile C. At this time, the -L of the lower pile C is The ends are fitted into the pile joint using the mounting pieces 8, 8, .

And the mounting piece 7°7 at the end of this pile joint...
...by fitting the lower end of the large-diameter upper pile A into the inside using this as a guide, and by connecting this joint fitting B and the support body 2 by welding or the like, the small-diameter lower pile C and the large-diameter upper pile A are fitted. These are connected via a pile joint, and a striking force is applied to the head of pile A to drive it into the ground.

Since the present invention has the above-mentioned configuration, the lower end of the upper pile A is guided by the mounting pieces 7, 7, and the -L end of the lower pile B is inserted into the mounting pieces 8, 8, . . . are used as guides, and are fitted into these for positioning. Therefore, this positioning is easy, and no misalignment occurs between the two studs A and C.

In addition, since the cylinder 1 is formed into an inverted truncated conical shape, the impact force is transmitted downward without difficulty during driving, and at this time, a large resistance is generated between the outer peripheral surface of the cylinder 1 and the ground. This prevents this and allows this driving to be carried out smoothly.

Furthermore, by arranging the rib plates 6, 6, etc., there are various effects such as being able to manufacture a lightweight product with sufficient strength.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Figure 1 is a partially cutaway front view, Figure 2 is a plan view, and Figure 3 is a partially cutaway front view showing a state in which the upper and lower piles are connected. It is. 1... Cylindrical body, 2, 3... Support body, 4.
・・・・・・−Upper seat board, 5...Lower seat board, 6...
... Rib plate, 7, 8 ... Mounting piece.

Claims (1)

[Scope of utility model registration request] An upper seat plate is attached to the upper end opening of the inverted truncated conical cylinder, and a lower seat plate is attached to the lower end opening, and a plurality of rib plates are arranged between the upper seat plate and the lower seat plate, A mounting piece protruding from the upper surface is disposed on the outer periphery of the upper seat plate, and a mounting piece protruding from the lower surface is disposed on the outer circumference of the lower seat plate by pushing the protruding parts outward, While positioning is performed using the mounting piece as a guide, a large-diameter upper peg is installed on the upper seat plate.
A pile joint characterized in that a lower plate of a small diameter is connected to each lower pile.