JPH0710039U - Seating plate for soil retaining and seating plate combination for soil retaining - Google Patents

Abstract

(57) [Abstract] [Purpose] A soil retaining seating plate for use in a soil retaining device used when burying a pipe in an excavated trench, and providing a soil retaining seating plate in which the rigidity of the central portion of the plate is enhanced. The purpose is to do. [Structure] A plate 5a, and two vertical beams 1 provided at both left and right ends thereof and two intermediate vertical beams 1a provided side by side at a central portion thereof are provided. Plate 5
a is provided with a mounting port 7 for mounting the expandable and retractable beam girder 4 that connects between another plate 5a installed facing a and another plate 5a. Connection fittings 3 for stacking the seating plates in the upward direction
Is formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an earth retaining seating plate and an earth retaining seating plate combination used in an earth retaining device used when a pipe is buried in an excavated trench.

[0002]

[Prior art]

 Conventionally, the soil retaining device shown in Fig. 7 has been used in the burial work for water and sewer pipes or gas pipes. This earth retaining device is composed of a seating plate 20 used for earth retaining of a soil wall portion excavated over a predetermined section (usually about 30 m) and a retractable beam 4.

The seating plate 20 is composed of a plate 20a and vertical beams 1 provided at both left and right ends of the plate 20a. The vertical beam 1 is provided with mounting ports for attaching the cutting beams 4 at several places. 7 is provided. A connecting fitting 3 for mounting the seating plate 20 in the upward direction is attached to the upper portion of the vertical beam 1, and a cutting shoe 6 is attached to the lower end of the vertical beam 1 landing on the groove bottom.

At the time of assembling, the sheeting plates 20 arranged to face each other with a necessary gap are connected to each other by using the cross beams 4. Further, another seating plate 20 is placed on the upper side of these seating plates 20, these are connected by the connecting fittings 3 and fixed by the wing bolts 8. In this way, the seating plates 20 are stacked in a plurality of stages to form a soil retaining device having a required height.

At the time of use, the assembled soil retaining device is carried into a previously excavated ditch by using a crane or the like, and is installed at a predetermined position. Then, the box-shaped inside of the earth retaining device is excavated, the pressure hood 15 is fitted into the connection fitting 3, and this portion is pressed to push the earth retaining device. Further, the sheeting plates 20 are piled up according to the depth of the groove, and this operation is repeated to submerge the soil retaining device at a predetermined depth. By the same work, soil retaining devices will be installed in a row over the specified section in the ditch. After arranging the earth retaining device in this way to carry out earth retaining, the pipe body is put into the groove via the space between the both beams 4 of the seating plate 20 of the earth retaining device, and a predetermined burying operation is performed.

[0006]

[Problems to be solved by the device]

 By the way, the seating plate 20 used in the soil retaining device is required to have sufficient rigidity against a vertical load applied to the central portion of the plate 20a or a load applied to the plate 20a surface.

In order to counter these loads, it is possible to increase the thickness of the cross section of the plate 20a or thicken the steel plate itself that constitutes the plate 20a. However, if the thickness of the cross section or the steel plate itself is increased, the weight of the seating plate 20 increases, which hinders the work such as transportation or installation. Moreover, the thickness of the cross section is taken into consideration, and the groove is added. The width needs to be excavated.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a soil retaining seating plate in which the rigidity of the central portion of the plate is enhanced.

[0009]

[Means for Solving the Problems]

 In order to solve the above technical problems, the soil retaining seating plate according to the present invention includes a plate 5a, two vertical beams 1 provided at both left and right ends thereof, and a central part as shown in FIG. It has two intermediate vertical beams 1a that are installed, and the vertical beams 1 are fitted with expandable and retractable beams 4 that connect between the plate 5a and another plate 5a that is installed so as to face it. A mounting port 7 is provided for this purpose, and a connection fitting 3 for arranging another seating plate in the upward direction is formed on the upper portion of each of the vertical beams 1 and 1a.

Further, in the first earth retaining seating plate combination according to the present invention, another sheeting plate having the same length as this seating plate is superposed on the earth retaining seating plate and connected by the connecting fitting 3. It is a composition. In the second earth retaining seating plate assembly according to the present invention, the other earth retaining seating plate is overlaid with two other seating plates having a half length of the seating plate and connected by the connecting fittings 3. It is a composition.

[0011]

[Action]

 According to the above-mentioned seating plate for retaining soil, the load from the other seating plates which are arranged in an upper position is not limited to the vertical beams 1 at both ends, but the two loads which are arranged side by side in the central portion of the plate 5a. It is also effectively supported by the intermediate vertical beam 1a. In addition, the central vertical beams 1a of the upper seating plates and the connecting fittings 3 provided in the central part of the lower seating plates, which are stacked on top of each other, firmly connect the central parts of the respective seating plates to each other. The load of the surface pressure applied to is dispersed and supported.

[0012]

【Example】

 An embodiment of a soil retaining device using a soil retaining sheeting plate according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 and FIG. 3 show the soil retaining device used in the above embodiment. This earth retaining device is composed of upper and lower three-stage seating plates, the soil retaining seating plate 5 according to the present invention is arranged in the upper and lower stages thereof, and the half-length half of the seating plate 5 is arranged in the middle stage. The shaku seating plate 2 is arranged.

As shown in FIG. 5, the seating plate 5 has a plate 5a having an outer surface formed of a flat plate of steel and an inner surface formed of a tapered frame, and vertical beams provided at both left and right ends of the plate 5a. 1 and. Further, two intermediate vertical beams 1a are arranged in parallel at the center of the plate 5a, and two connecting fittings 3 are provided on the upper surface of the center of the plate 5a so as to project upward.

A connecting fitting 3 is attached to an upper portion of the vertical beam 1, and a side wall of the vertical beam 1 is provided with a mounting port 7 for a cutting beam 4 for connecting the seating plates to each other. A cutting shoe 6 is attached to the lower ends of the vertical beam 1 and the intermediate vertical beam 1a. The cutting beam 4 is configured to be expandable and contractible, and the spacing between the seating plates is adjusted.

The half-size seating plate 2 has a plate 2a and vertical beams 1 provided at both left and right ends of the plate 2a. The vertical beam 1 is provided with a mounting port 7 for a cut beam 4 that connects the seating plates to each other, and a connection fitting 3 for connecting another sheeting plate is attached to the upper part of the vertical beam 1. .

When assembling the soil retaining device, two half-length seating plates 2 are juxtaposed at each of the right half and the left half of the upper side of the seating plate 5, and the connecting fitting 3 has a lower part of the vertical beam 1. Are fitted to connect the upper and lower seating plates to each other, and the connecting portion is fixed using the wing bolt 8. Further, another seating plate 5 is connected to these two half-length seating plates 2 arranged side by side through a connecting fitting 3 to form a three-tiered stacking seating plate assembly for soil retention as a whole.

In the same manner, another three-tiered seating plate combination for retaining soil is formed, and the vertical beams 1 at both ends of these two combinations are connected by the cut beam 4 to obtain the structure shown in FIGS. Assemble the three-tiered soil retaining device 13 shown.

Here, a pipe loading and arranging method in the case of loading and arranging the pipe 9 using the soil retaining device 13 according to the above-described embodiment will be described. The length of the pipe 9 to be charged is intended to be longer than the half-length seating plate 2 and shorter than the seating plate 5, and when such a pipe 9 is buried, this pipe charging / disposing method is used. Applied.

First, as shown in FIG. 2, a groove is excavated over a predetermined section (usually about 30 m), and an earth retaining device is installed in the groove. At this time, the above-mentioned three-tiered soil retaining device 13 is arranged at the site where the above-mentioned pipe 9 is introduced, and the soil retaining device 12 in which only the half-size sheeting plate 2 is laminated at the other sections is connected by the beams 4. Deploy.

In the above-described embodiment, the three-tiered soil retaining device 13 is arranged at one location in the substantially central portion of the predetermined section. Then, after the soil retaining device 13 is carried into a groove excavated in advance by using a crane or the like, the box-shaped inside of the soil retaining device 13 is excavated and the soil retaining device is further pushed.

When the earth retaining device 13 is pushed in, the pressure hood 15 is fitted into the connecting fitting 3 above each vertical beam 1, 1a of the seating plate 5 arranged at the upper end, for example, a bucket of a backhoe. Part is used to alternately press one part of the vertical beams at both ends of the seating plate 5 or press the part of the intermediate vertical beam 1a to gradually push in the soil retaining device 13. Further, a new three-tiered soil retaining device is piled up on the upper portion according to the depth of the groove, and the same operation is repeated to submerge the soil retaining device at a predetermined depth.

The structure of the soil retaining device is not limited to the above-mentioned three-tiered soil retaining device, but a seating plate combination for soil retaining in which only the seating plate 5 is stacked in multiple layers in consideration of the load such as the surface pressure applied to the soil retaining device. The soil retaining device consisting of can be used. In this case, two intermediate vertical beams 1a may not be provided side by side on the seating plate 5, but one intermediate vertical beam may be provided instead. One connecting fitting may be provided on the upper surface.

If necessary, a soil retaining device is used which is composed of a two-tier stacking sheeting plate assembly for soil retaining, in which two half-size sheeting plates 2 are arranged side by side in the lower stage and a seating plate 5 is arranged in the upper stage. It can also be used by stacking it on other soil retaining devices.

The soil retaining device 12 is similarly arranged in the section other than the region where the soil retaining device 13 is arranged. Since the soil retaining device 13 has a spacing of the girders 4 that is wider than the length of the pipe 9 to be input, this is used as the input port 14 of the pipe 9.

After arranging the soil retaining device over the predetermined section, the pipe 9 is lowered from the input port 14 using a crane or the like, and is introduced into the groove. At this time, as shown in FIG. 6, the horizontal spacing of the charging port 14 is longer than that of the pipe 9, so that the pipe 9 is lowered vertically and charged in the horizontal state.

After the above pipe 9 is put into the groove, it is moved in the groove direction, and then a new pipe 9 is put in from the above-mentioned charging port 14. By repeating these operations, the pipes 9 are thrown in one after another, the pipes 9 are arranged over a predetermined section, and a predetermined burying work is performed.

Therefore, according to the soil retaining device and the pipe charging and disposing method according to the above-described embodiment, both the seating plate 5 and the half-length seating plate 2 having a half length thereof are used. At the time of loading, a wide loading port having the length of the seating plate 5 can be secured, and since the half-size sheeting plate 2 is included, that portion can be easily transported and handled.

Further, according to the soil retaining sheeting plate 5 of the above-described embodiment, the two intermediate vertical beams 1a juxtaposed in the central portion of the plate 5a add to the central portion of the plate 5a from above. The load such as the heavy pressure of the seating plate 5 is effectively supported.

Further, according to the soil retaining device in which the seating plates 5 are stacked in the upper and lower stages, the seating plate is constituted by the intermediate vertical beam 1a of the upper seating plate 5 and the corresponding fitting 3 of the lower seating plate 5. Since the central parts of the sheets are firmly connected and the surface pressure applied to each of these seating plates can be distributed to each other, there is an effect that the load is effectively supported and the rigidity is strengthened.

In addition, although the vertical beams 1 at both ends of the seating plate 5 are normally pressed alternately, according to the soil retaining device of the above-described embodiment, the pressure hood is attached to the connecting fitting 3 above the intermediate vertical beam 1a. Since the intermediate vertical beam 1a can also be used as a pressing portion by fitting 15 therein, it is convenient in terms of work.

[0032]

[Effect of device]

 As described above, according to the seating plate for retaining soil according to the present invention, the two vertical beams 1 provided at the left and right ends of the plate 5a and the two intermediate vertical beams 1a provided side by side in the central portion. And a connecting fitting 3 for arranging another seating plate in the upper direction is formed on the upper part of each of the vertical beams 1 and 1a. The vertical load applied to the central portion of the plate 5a is effectively supported.

In addition, the central vertical beams 1a of the upper seating plates and the connecting fittings 3 of the lower seating plate corresponding to the upper seating plates firmly connect the central portions of the seating plates to each other. Since the surface pressure applied near the center can be dispersed, the load can be effectively supported and the rigidity can be strengthened.

According to the first soil retaining seating plate assembly, since the upper and lower plates 5a are connected at the left and right end portions and the central portion of the plate 5a, a firmly connected seating plate assembly can be constructed. Further, according to the second soil retaining seating plate assembly, the soil retaining seating plate and two other seating plates having a half length of the seating plate are stacked and connected by the connection fittings 3. Therefore, it is possible to secure a wide input port for the length of the above-mentioned seating plate for soil retention, so it is easy to insert the pipe, and since the sheeting plate with half the length is included, it is easy to transport and handle it. .

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a soil retaining device using a soil retaining seating plate and a soil retaining seating plate combination according to an embodiment of the present invention.

FIG. 2 is a view showing a method of placing and inserting a pipe using the soil retaining device according to the embodiment of the present invention.

FIG. 3 is a perspective view of the soil retaining device according to the embodiment, FIG.
Is a perspective view seen from the front, and (b) is a perspective view seen from the back.

FIG. 4 is a side view of the soil retaining device according to the embodiment.

FIG. 5 is an explanatory diagram of the soil retaining device according to the embodiment, (a)
Is a plan view, (b) is a front view, (c) is a partially enlarged view, and (d) is a side view.

FIG. 6 is a diagram showing how a pipe is thrown in using the soil retaining device according to the embodiment.

FIG. 7 is an exploded perspective view showing a soil retaining device according to a conventional example.

[Explanation of symbols]

 1 Vertical Beam 1a Intermediate Vertical Beam 3 Connection Metal Fitting 4 Cut Beam 5 Seating Plate 5a Plate 7 Mounting Port

Claims (3)

[Scope of utility model registration request] 1. A plate (5a), and two vertical beams (1) provided at both left and right ends thereof, and two intermediate vertical beams (1a) provided in parallel at a central part, The vertical beam (1) is provided with a mounting port (7) for mounting a retractable cross beam (4) for connecting between the plate (5a) and another plate (5a) installed so as to face the plate (5a). And a connection fitting (3) for arranging another seating plate in an upwardly stacked manner is formed on an upper portion of each of the vertical beams (1, 1a). 2. A seating plate combination for retaining soil, characterized in that the seating plate according to claim 1 is overlaid with another seating plate having the same length as this seating plate and connected by a connecting fitting (3). body. 3. The fitting (3) according to claim 1, wherein two other seating plates having a half length of the seating plate are stacked on the seating plate according to claim 1.
Seating plate combination for soil retaining, characterized by being connected by.