JPH07166546A - Soldier beam lock anchor type earth retaining soldier beam - Google Patents

Abstract

PURPOSE:To provide a strong soldier beam easy to execute by using an angular steel pipe for the earth retaining soldier beam, intruding a small steel pipe at an angle in the longitudinal direction, fixing it with reinforcing rings at both ends, and inserting a lock anchor into the small steel pipe. CONSTITUTION:A small-diameter steel pipe 11 intruded into an angular steel pipe 10 in response to the anchor driving angle, and it is fixed by reinforcing ring plates 12 at both ends. The angular steel pipe 10 is continuously driven to form an earth retaining soldier beam 1, a lock anchor 2 is driven into the small-diameter steel pipe 11, and it is fixed by a fixing nut 3 via a pedestal 6. The welding work at the site is reduced to the utmost, and large shearing force can be coped with. The soldier beam having a simple structure and easy to execute can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main pile used in a main pile lock anchor type Yamadome.

[0002]

2. Description of the Related Art The parent pile lock anchor type Yamadome is the most common method for performing rock retention on a rock.
~ FIG. 11 will be described.

In the figure, reference numeral 1 is a main pile, but a method of directly pressing the main pile 1 with a lock anchor 2 is adopted. In detail, the lock anchor 2 is penetrated through the main pile 1, and the end of the lock anchor 2 is fixed on the side surface of the main pile 1 by the fixing nut 3 and the bearing plate 4.
5 is angry and 6 is a pedestal.

Since the parent pile 1 penetrates the lock anchor 2 in this manner, as shown in FIGS. 5 to 8, the webs of the grooved steel 7 are opposed to each other with a gap therebetween. The flat steel 8 is bridged over the flanges, and the flat steel 8 connects the grooved steels 7 to each other to form a box shape.

The channel steel 7 and the flat steel 8 are joined by welding, and the penetrating portion for penetrating the lock anchor 2 has an opening 9 thereof.
It is ensured by forming a and 9b in the flat steel 8 as a defective portion. The openings 9a and 9b are provided so that the penetrating portions are vertically displaced so that they match the anchor driving angle.

[0006]

As described above, since the conventional parent pile 1 has the channel steel 7 and the flat steel 8 and is a long product, it is difficult to process and connect it on site. is there. As a result, the processing cost is high and the workability is not good.

Further, since the commercially available channel steel 7 is used, the web has a limit and is structurally weak against a large shearing force.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, to reduce the welding cost, to greatly reduce the processing cost, and to easily obtain a structure capable of sufficiently resisting a large shearing force. It is to provide a parent pile for staying.

[0009]

In order to achieve the above-mentioned object, the present invention provides a parent pile lock anchor type yamadome, in which a lock anchor is made to penetrate a parent pile made of steel, and its end is fixed on the side surface of the parent pile. A square steel pipe was used for the pile, and a small diameter steel pipe was passed through the square steel pipe in the front-rear direction to form a lock anchor insertion hole, and the small diameter steel pipe was penetrated at the anchor driving angle. The gist is to dispose a reinforcing ring plate.

[0010]

According to the first aspect of the present invention, since the square steel pipe is used, the welding portion is limited to the anchor mounting portion, and the working cost is greatly reduced. In addition, the small diameter steel pipe plays a role of preventing buckling when the anchor force is introduced.

According to the second aspect of the present invention, in addition to the above operation, the lock anchor insertion hole can be easily formed by the small diameter steel pipe in accordance with the anchor driving angle, and the anchor driving can be accurately performed using the small diameter steel pipe as a guide. It can be carried out.

According to the present invention as set forth in claim 3, the reinforcing ring plate can compensate for a cross-sectional defect around the opening.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a longitudinal side view showing an embodiment of a parent pile lock anchor type parent pile for mountain retaining of the present invention, and FIG. 2 is a front view of the same.

In the present invention, as shown in FIG. 4, a large square steel pipe 10 is used for the main pile 1. Then, as shown in FIG. 3, a small-diameter steel pipe 11 was disposed in the rectangular steel pipe 10 so as to penetrate in the front-rear direction, and the small-diameter steel pipe 11 formed a lock anchor insertion hole.

The small diameter steel pipe 11 is fixed to the square steel pipe 10 by welding. The angle is an anchor driving angle, and the reinforcing ring plate 12 is fixed to the opening of the small diameter steel pipe 11 by welding all around. To make reinforcements.

The parent pile 1 of the present invention is also the same as the above-mentioned conventional example as a parent pile lock anchor type mountain retention.
~ The lock anchor is pierced as described in Fig. 11 and its end is fixed.

At this time, the steel pipe diameter and the wall thickness of the rectangular steel pipe 10 forming the parent pile 1 are appropriately selected according to the sectional force generated in the pile. Further, when a long product is required on site, it is sufficient to connect the rectangular steel pipes 10 up and down, and this can be realized by simply performing the entire circumference welding with a welding machine for connecting steel pipes.

[0018]

As described above, in the parent pile lock anchor type mountain pile parent pile of the present invention, there are few welding points, the processing cost can be greatly reduced, and a structure that can sufficiently cope with a large shearing force is easy. Is obtained.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing an embodiment of a parent pile lock anchor type parent pile for mountain retaining of the present invention.

FIG. 2 is a front view showing one embodiment of a parent pile lock anchor type mountain retaining parent pile of the present invention.

FIG. 3 is a cross-sectional view of an anchor portion of a parent pile lock anchor type mountain retaining parent pile of the present invention.

FIG. 4 is a sectional view of a general portion of a parent pile lock anchor type parent pile for mountain retaining of the present invention.

[Fig. 5] 1 of conventional parent pile lock anchor type mountain retaining parent pile
It is a vertical side view showing an example.

[Fig. 6] 1 of conventional parent pile lock anchor type mountain retaining parent pile
It is a front view showing an example.

FIG. 7 is a cross-sectional view of an anchor portion of a conventional parent pile lock anchor type mountain retaining parent pile.

FIG. 8 is a cross-sectional view of a general portion of a conventional parent pile lock anchor type parent pile for mountain retaining.

FIG. 9 is a vertical cross-sectional side view showing details of lock anchor attachment of a parent pile lock anchor type Yamadome.

FIG. 10 is a front view of a parent pile lock anchor type Yamadome.

FIG. 11 is a cross-sectional view of a parent pile lock anchor system Yamadome.

[Explanation of symbols]

1 ... Parent pile 2 ... Lock anchor 3 ... Fixing nut 4 ... Bearing plate 5 ... Raised 6 ... Pedestal 7 ... Channel steel 8 ... Flat steel 9a, 9b ... Opening 10 ... Square steel pipe 11 ... Small diameter steel pipe 12 ... Reinforcement ring plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toru Yamada 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Within Kashima Construction Co., Ltd. (72) Inventor Koichi Tamada 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd.

Claims (3)

[Claims] 1. In a parent pile lock anchor type Yamadome in which a lock anchor is passed through a parent pile made of steel and the end of the parent anchor is fixed to the side surface of the parent pile, a square steel pipe is used for the parent pile, and the square steel pipe is used in front and back. Main pile lock anchor type main pile for mountain retaining, characterized in that a lock anchor insertion hole is formed by penetrating a small diameter steel pipe in the direction. 2. The parent pile lock anchor type mountain retaining parent pile according to claim 1, wherein the small diameter steel pipe is penetrated at an anchor driving angle. 3. A parent pile lock anchor type pile retaining parent pile according to claim 1 or 2, wherein a reinforcing ring plate is arranged in the small diameter steel pipe opening.