JP2002038485A - Connection rail of earth retaining panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection rail of an earth retaining panel capable of simply connecting upper and lower connecting rails and eliminating fear of lost of parts. SOLUTION: The connection rail for the earth retaining panel in which earth retaining panels 31, 51 are fitted to rails 25 of the side faces and driven into ground and other connection rail 41 are connected to the upper section according to the excavation depth in cut and cover construction method, is provided with columnar bodies 22, 42, a rail portion 25 installed at the side face of tie bodies 22, 42 and having an opening at the side face part and the upper part and in which earth retaining panels 31, 51 are inserted from above, cylindrical fitting parts 23, 43 formed at the upper end of the bodies 22, 42, a joint part 44 formed at the lower end of the bodies 22, 42 and in which the basal part is fitted to the fitting part of other joint rails and having a guide part 45 at the front end, and a joint pin 48 piercing the joint part 44 and the fitting part 23, 43 in a state the joint part 44 is set in the fitting part of other connection rail to connect both.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting rail for holding a retaining panel in a development method, and more particularly, to a connecting rail for a retaining panel which facilitates connecting the connecting rails to each other easily in a vertical direction. About.

[0002]

2. Description of the Related Art Conventionally, in a development method, two retaining panels are driven into the soil while holding them at a predetermined interval, and excavation is performed between these retaining panels.

[0003] In recent years, a rail-type assembly configuration has been used in which connecting rails are erected on both sides of a retaining panel, and the retaining panel is fitted to the rail.

FIG. 11 shows this first conventional example. The connecting rail 1 is provided with a rail portion 2 on a side surface, and an earth retaining panel 3 is fitted and connected to the rail portion 2. The connecting rail 1 and the retaining panel 3 are connected at predetermined intervals by a cutting beam support 4 and installed at the site. When the excavation depth becomes deep, the connecting rail 1 and the retaining panel 3
Is connected to another connecting rail 5 and a retaining panel 6.

That is, the connecting block 7 is fitted to the upper end of the connecting rail 1. Therefore, the connecting rail 5 is lifted vertically, the fitting part 8 at the lower end thereof is made to coincide with the connecting block 7, the connecting rail 5 is lowered vertically, and the connecting block 7 is inserted into the fitting part. Then, the fitting portion and the connection block 7 are connected by a connection pin (not shown). Thereby, the connecting rail 1 and the connecting rail 5 are fixed via the connecting block 7.

FIG. 12 shows a second conventional example. This is also the same configuration as the first conventional example, in which the connecting portion 14 of the retaining panel 13 is fitted to the rail portion 12 of the connecting rail 11. When connecting the additional connection rail 15, the connection block 17 is fitted into the connection rail 11 and the fitting portion 16 of the connection rail 15, and the rail connecting pin 18 is driven between the connection block 17 and the connection rails 11 and 15. To prevent them from falling down. And the connecting rails 15, 15
(Only one side is shown) and an additional earth retaining panel 18 is connected thereto.

[0007]

However, the above-mentioned first and second conventional examples have a common problem. That is, since the ends of the heavy connecting rails 5 and 14 are made to coincide with the connecting blocks 7 and 16 in a suspended state, there has been a problem that the alignment work is complicated.

Further, since it is necessary to prepare a separate member as the connecting block 6, not only is the management of parts complicated, but there is a risk of losing parts.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connection rail of a retaining panel which can easily connect upper and lower connection rails and does not lose parts. .

[0010]

According to the first aspect of the present invention, the retaining members 31 and 51 are attached to the rail portions 25 on the side surfaces by an open-cutting method.
Is installed in the ground, and is connected to another connecting rail 41 at an upper portion according to the excavation depth. The connecting rail is a pillar-shaped main body 22, 42;
A rail portion 2 provided on the side surface of the base member 42 and having an opening at the side surface portion and the upper portion, and into which the retaining panels 31, 51 are inserted from above.
5, cylindrical fitting portions 23, 43 formed at the upper end portions of the main bodies 22, 42, and base portions formed at the lower end portions of the main bodies 22, 42, fitting into the fitting portions of the other connecting rails. And a connecting portion 44 having a guide portion 45 at the tip, and penetrating through the connecting portion 44 and the fitting portions 23 and 43 in a state where the connecting portion 44 is mounted on a fitting portion of another connecting rail, and connecting the two. It is characterized by having a coupling pin 48 for coupling.

The invention according to claim 2 is characterized in that the guiding portion of the connecting portion is formed in a tapered shape.

The invention according to claim 3 is characterized in that at least one surface of the connecting portion is formed in a flat shape.

The invention according to a fourth aspect is characterized in that the fitting portion of the connecting portion is formed in a cylindrical shape.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In the figure, a lower connecting rail 21 has a fitting portion 23 formed by opening an upper end portion of a cylindrical main body 22, and a cutting portion 24 for driving into the ground is formed at a lower end portion. . Also, rail portions 25 are formed on both side surfaces. The rail section 25 has a substantially rectangular tubular cross section, and has an opening 26 at the center on the opposite side of the main body 21.

A plurality of mounting plates 28 for connecting the beam support 27 are attached to the side surface adjacent to the rail portion 25.

The lower retaining panel 31 is driven into the ground at predetermined intervals in accordance with the width of the groove to be excavated, and has a blade portion 32 at the lower end. In addition, a mountain-shaped fitting protrusion 33 is provided on both side surfaces. Also,
Recesses 34 for connecting fittings are provided on both sides of the upper end.

At the time of excavation, one retaining panel 31 is erected at the excavation position by the assembly stand 35 as shown in FIG. Next, the pair of connecting rails 21 and 21 connected by the cut beam support 27 are suspended, and the connecting rail 21 is lowered while the rail portion 25 of the connecting rail 21 is fitted to the fitting convex portion 33 from above. Are connected (see FIG. 5). Similarly, the pair of connecting rails 21 is connected to the opposite fitting protrusion 33 (see FIG. 6). Finally, the retaining panel 31 is erected on the connecting rails 21 on both sides (see FIG. 7). The assembled retaining panel 31 is suspended and installed at a predetermined excavation position.

The connecting rail 41 according to claims 1 to 4 is connected to the upper part of the connecting rail 21 when the excavation depth becomes large. Hereinafter, this will be described with reference to FIGS. The connection rail 41 has the same configuration as the lower connection rail 21, includes a cylindrical main body 42, and forms an engagement portion 43 by opening an upper end of the main body 42.
Rail portions 25 are formed on both side surfaces. The rail section 25 has a substantially rectangular cylindrical cross section,
An opening 26 is provided in the center on the opposite side of the opening 1.

A connecting portion 44 is provided at the lower end, and the leading end thereof is a tapered guiding portion 45. The connecting portion 44 is formed by bending the lower end thereof or welding another member along the inner side surface of the main body 42, and the base end portion is fitted to the fitting portion 23 of the connecting rail 21. Guiding part 45
The side 45a shown in the figure is formed of the same plane as the connecting portion 44, and has a tapered shape whose width dimension gradually decreases toward the tip. The side 45b opposite to the side 45a has a bent front end to form an inclined surface.
and a reinforcing member 46 is welded between them. The leading end area of the guiding portion 45 is smaller than that of the connecting portion 44, and is configured to be tapered as a whole. A plurality of mounting plates 28 for connecting the beam support 27 are attached to the side surface.

The connecting retaining panel 51 is connected to an upper portion of the retaining panel 31. A mountain-shaped fitting projection 33 is provided on each side surface, and concave portions 34 for connecting metal fittings are provided on both upper and lower sides.

When connecting the connection rail 41 to the connection rail 21, the connection rail 41 is suspended and moved above the connection rail 21. Therefore, the leading end of the guiding portion 45 is made to face the fitting portion 23 of the connecting rail 21. Guiding part 45
Has a smaller area than the fitting portion 23, so that the positioning is easy. Therefore, when the connecting rail 41 is gradually lowered, the connecting rail 41 is guided in accordance with the inclination of the guiding portion 45, the connecting portion 44 is fitted into the fitting portion 23, and the lower end of the main body 42 contacts the connecting rail 21. Stop. Therefore, the connecting pin 48 penetrates the connecting portion 44 and the fitting portion 23 and
Type.

Next, the concave portion 34 of the lower earth retaining panel 31
And the retaining panel 51 is hung, and the fitting projection 33 is inserted into the rail 25 of the connection rail 41. While sequentially lowering the retaining panel 51, the concave portion 34
Is connected to the connecting fitting 49. Next, the retaining panel 51
If the connecting pin 52 is driven in between the connecting metal fittings 49, the two are connected. Since the connecting fitting 49 is accommodated in the recess 34, it does not protrude.

When the excavation depth is further increased, another connecting rail 41 is connected to the upper part of the connecting rail 41. In this case, the above-described fitting portion 23 may be replaced with the fitting portion 43.

According to the above embodiment, the following effects can be obtained. 1) Since the connecting portion 44 is provided integrally with the connecting rail 41,
This eliminates the need for a separate connecting block as in the related art, can reduce costs, facilitates parts management, and does not lose parts. 2) Since the tapered guiding portion 45 is provided at the lower end of the connecting portion 44, positioning is easy, and even when the suspended connecting rail 41 is inclined, it is automatically guided to a predetermined position when descending. Work is extremely easy. 3) Since one side 45a of the guiding portion 45 is formed on the same plane as the connecting portion 44, the contact area with the fitting portions 23 and 43 becomes large, and the connecting state is stabilized. 4) Since the fitting portions 23 and 43 are formed as fitting holes, the inside of the connecting rail 41 functions as the fitting portion as it is, so that the production efficiency is high.

[0026]

According to the present invention, the earth retaining panel is attached to the side rail part in the open-cutting method and is driven into the ground, and the earth retaining panel is connected to another connecting rail at the upper part according to the excavation depth. A rail, a column-shaped main body, a rail portion provided on a side surface of the main body, having a side portion and an opening at an upper portion, into which a retaining panel is inserted from above, and a tube formed at an upper end portion of the main body. -Shaped fitting hole, a connecting part formed at the lower end of the main body, the fitting part being fitted into the fitting hole of another connecting rail, and having a guiding part at the tip, and this connecting part being connected to another connecting rail. Since it is provided with a coupling pin that penetrates these coupling portions and the coupling hole portions and couples them together in a state of being mounted in the coupling hole portions, it is extremely easy to perform alignment during coupling,
Further, since the connecting portion is guided and fitted to the guiding portion, there is an effect that the working efficiency is improved. further,
Since the connecting portion is formed integrally with the main body, there is an effect that the production management can be easily performed without fear of losing parts.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an assembled state of a connecting rail and a retaining panel.

2A and 2B are diagrams showing a lower connecting rail, wherein FIG. 2A is a front view and FIG. 2B is a side view.

FIG. 3 is an exploded perspective view showing a positional relationship of a retaining panel.

FIG. 4 is a perspective view showing a first step of assembling a lower connecting rail and a retaining panel.

FIG. 5 is a perspective view showing a second step of assembling the lower connecting rail and the retaining panel.

FIG. 6 is a perspective view showing a third step of assembling the lower connecting rail and the retaining panel.

FIG. 7 is a diagram illustrating a state where a lower connecting rail and a retaining panel are installed.

FIG. 8 is a front view of a connecting rail.

FIG. 9 is a side view of a connecting rail.

FIG. 10 is a bottom view as seen from the direction of the arrow in FIG.

FIG. 11 is an exploded perspective view of a first conventional example.

FIG. 12 is an exploded perspective view of a second conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Connection rail 22 Main body 23 Fitting part 25 Rail part 26 Opening 31 Earth retaining panel 33 Fitting projection 41 Connection rail 42 Main body 43 Fitting part 44 Connecting part 45 Guide part 46 Reinforcement plate 48 Connecting pin 51 Earth retaining panel

Claims (4)

[Claims] 1. A connecting rail of a retaining panel which is driven into the ground by attaching a retaining panel to a side rail portion in an open-cutting method and connects another connecting rail to an upper portion according to an excavation depth. A pillar-shaped main body, a rail portion provided on a side surface of the main body, having an opening at a side surface portion and an upper portion, and a retaining panel is inserted from above, and a fitting portion formed at an upper end portion of the main body; A connecting portion having a guide portion formed at a lower end portion of the main body, the base portion being fitted into a fitting portion of another connecting rail, and the connecting portion being fitted into a fitting hole of the other connecting rail; A connecting pin for penetrating the connecting portion and the fitting portion and connecting the two in the state. 2. The connecting rail of a retaining panel according to claim 1, wherein the guide portion of the connecting portion is formed in a tapered shape. 3. The connection rail of the retaining panel according to claim 1, wherein at least one surface of the connection portion is formed in a flat shape. 4. The connecting rail of a retaining panel according to claim 1, wherein the fitting portion of the connecting portion is formed in a tubular shape.