JPH09158176A - Connection metallic material of pile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make site execution easy by outside fitting a cylinder ring to the end plates of upper and lower piles, disposing a flanges on and under the cylinder ring, and locking a spigot provided on the circumference of the flange. SOLUTION: A larger cylinder ring 10 than the total thickness of two end plates 2a, 2b in the size of the pile axial direction is outside fitted to the circular end plates 2a, 2b formed on piles 1a, 1b respectively. And an upper flange 20 and a lower flange 30 having a plurality of slits on the circumferences respectively are disposed on and under the cylinder ring 10, and spigots 21, 31 provided on the circumferential sides are locked in the inside face of the cylinder ring 10. Furthermore, bolts 40 are passed through the upper flange 20, the cylinder ring 10 and the lower flange 30, and tightened by nuts. Thus, connection of the piles can be simply performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile connection piece, and more particularly to a connection piece for a pile for connecting upper and lower piles of concrete piles or steel pipe piles having a diameter of 250 to 2000 mm without welding.

[0002]

2. Description of the Related Art To join upper and lower concrete piles or steel pipe piles without welding, as shown in FIG. 4, piles 1a, 1b are used.
Flanges 5a and 5b are formed at the ends of the
The easiest way to obtain a strong joint is to connect a and b with a bolt and nut 6. However, for example, when manufacturing a prestressed concrete foundation pile by centrifugal molding, a pile having a portion having an outer diameter larger than the outer diameter of the pile is not preferable. Therefore, the end plate of the pile is usually not formed like the flanges 5a and 5b larger than the outer diameter of the pile, but is formed to have the same outer diameter as the outer diameter of the pile.
Therefore, they cannot be combined as shown in FIG.

[0003]

DISCLOSURE OF THE INVENTION The present invention is a welding-free joint in the connection of such upper and lower piles, has the same strength and rigidity as a flange joint, is easy to be installed on site, and technically An object is to provide a connection hardware having an excellent structure.

[0004]

The present invention has been developed from such a point of view, and has the following technical means. That is, according to the present invention, a cylindrical ring which is fitted on the outer circumference of the end plates of the upper and lower piles to be connected and has a pile axial dimension larger than the total thickness of the upper and lower end plates, and an inner peripheral surface of the cylindrical ring. Two upper and lower flanges each having a wax on the inner peripheral side and located above and below the cylindrical ring, and a large number of bolts and nuts penetrating the upper and lower flanges and the cylindrical ring to bind them together are provided. To provide a connection hardware for a pile.

In this case, it is preferable to provide a ring-shaped concavo-convex tenon on the contact surfaces of the end plates of the upper and lower piles because the upper and lower piles can be easily aligned and the cylindrical ring and the upper and lower flanges can be easily attached. .

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to FIGS.
It will be described based on FIG. FIG. 3 is a vertical cross-sectional view of the connection portion of the pile of the embodiment, in which a cylindrical ring 10 fitted on the end plate 2a of the upper pile 1a and the end plate 2b of the lower pile 1b and flanges 20 arranged above and below the cylindrical ring 10 are shown. , 30 are bound by bolts and nuts 40. FIG. 1 is a partial cross-sectional view of a bolt connection portion of a connection metal object of a pile according to an embodiment.

As shown in FIG. 1, upper and lower end plates 2a, 2
b is formed to be equal to or smaller than the outer diameter dimension of the piles 1a and 1b. Therefore, the pile concrete near the end plates is also manufactured by drawing the pile end sleeves 3a and 3b. The contact surfaces of the end plates 2a and 2b are aligned by the concavo-convex tenon ring portion 7. The cylindrical ring 10 is fitted onto the end plates 2a and 2b. Cylindrical ring 10 is end plate 2
It is loosely fitted to the outer circumferences of a and 2b, and the axial dimension of the pile is larger than the sum of the two end plates 2a and 2b. The upper flange 20 is divided into a plurality in the circumferential direction, and the cylindrical ring 10 is provided on the inner diameter side thereof.
An anchor 21 is attached to the inner surface of the. This anchor 21 is a cylindrical protrusion that matches the inner diameter of the cylindrical ring 10, and is used for positioning the flange 20 in multiple divisions.
It has a function of pressing the end plates 2a and 2b.
The lower flange 30 has a brazing member 31 that engages with the inner surface of the cylindrical ring 10 in an upward direction. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, showing a flange 20 for pressing the end plate 2a (see FIG. 1) of the pile 1a. This flange is split 22
It is divided in two. Of course, it may be divided into three or more. The same applies to the lower flange 30. The connection hardware of the embodiment is one in which the end plates of the piles are firmly tightened and have the same strength and rigidity as those of a normal flange connection.

[0008]

According to the present invention, the strength similar to that of the flange joint can be achieved without using welding as the structure of the connection portion of the pile.
The rigidity can be obtained, and the piles can be joined very easily. Further, the uneven mortise ring portion increases the bending rigidity with respect to the external force in the direction perpendicular to the pile.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a connection metal piece of an example.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an overall cross-sectional view of a connecting metal article of an example.

FIG. 4 is an explanatory view of a flange joint.

[Explanation of symbols]

 1a, 1b Pile 2a, 2b End plate 3a, 3b Sleeve 5a, 5b Flange 6 Bolt 7 Mortise 10 Cylindrical ring 11 Bolt hole 20 Upper flange 21 Inlay 22 Split 30 Lower flange 31 Anvil 40 Bolt nut

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiromichi Sougami 3-18-16 Towa, Adachi-ku (72) Inventor Yoshitaka Ito 4-8-13 Kokubunjidai, Ebina-shi, Kanagawa (72) Inventor Satoru Yamada 1-40-14-605 Yoshino-cho, Omiya-shi (72) Inventor Masaaki Tada 3-14 Suehiro-cho, Yamagata-shi

Claims (2)

[Claims] 1. A disk-shaped end plate attached to the ends of upper and lower piles to be connected, and a cylindrical ring fitted on the outer periphery of the disk-shaped end plate and having a pile axial dimension larger than the total thickness of the upper and lower end plates. And a plurality of split upper and lower flanges which are provided on the inner peripheral side of the cylindrical ring and which are engaged with the inner peripheral surface of the cylindrical ring and which are respectively located above and below the cylindrical ring, and which penetrate the upper and lower flanges and the cylindrical ring. A connection hardware for a pile, which is provided with a large number of bolts and nuts for binding. 2. The connecting hardware for a pile according to claim 1, wherein an annular concavo-convex tenon is provided on a contact surface between the end plates of the upper and lower piles.