JP2789455B2 - A method of arranging long pipes in trenches with earth retaining equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for arranging a long pipe in a groove provided with a retaining device.

[0002]

2. Description of the Related Art Conventionally, in burying water and sewage pipes or gas pipes, a retaining device shown in FIG. 7 has been used. This soil retaining device is used for retaining a soil wall portion excavated over a predetermined section (usually about 30 m).
It is mainly composed of a seating plate 2 and an extensible cutting beam 4.

[0003] This sheeting plate 2 is usually 2-3.
m, having a horizontal length of about m, comprising a plate 2a and vertical beams 1 provided at both left and right ends of the plate 2a. A mouth 7 is provided. A connection fitting 3 for mounting the seating plate 2 on the vertical beam 1 is mounted on an upper portion of the vertical beam 1, and a cutting shoe 6 is mounted on a lower end of the vertical beam 1 which lands on the groove bottom.

At the time of assembling, the sheeting plates 2 which are arranged facing each other at a required interval are connected to each other by using cutting beams 4. Further, another seating plate 2 is superimposed on the upper side of the seating plate 2, these are connected by a connection fitting 3, and fixed by a wing bolt 8. In this way, a plurality of the sheeting plates 2 are stacked to form a retaining device having a required height.

In use, the assembled earth retaining device is carried into a previously excavated trench using a crane or the like, and is installed at a predetermined position. Then, the box-shaped interior 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 2 are stacked according to the depth of the groove, and this operation is repeated to set the earth retaining device to a predetermined depth. By the same operation, the soil retaining device is continuously installed over a predetermined section in the groove. After the soil retaining device is arranged and earth retaining is performed in this way, the pipe body is put into the groove through the opening formed by the sheeting plate 2 and the two cutting beams 4 of the soil retaining device, and is filled in a predetermined manner. Perform burial work.

[0006]

The length of the sheeting plate 2 used in the earth retaining device is usually 2-3.
m, and the gap between the cutting beams 4 provided at both ends of the sheeting plate 2 is also substantially the same. Therefore, when a long pipe 10 longer than this gap is inserted into the groove, the long pipe 10
Cannot be inserted into the groove while remaining horizontal.

For this reason, a method is generally used in which the long tube 10 is inserted obliquely in an inclined state as shown in FIG. In this method, since the long tube 10 is longer than the space between the cutting beams 4, some of the cutting beams 4 at the site where the long tube 10 passes must be removed in advance. Also, as shown in FIG. 9, the same method as described above is used when a relatively large-diameter long tube 11 is charged. In this case, however, more cutting beams 4 are longer by the size of the diameter. This obstructs the input passage of the shank 11, so that it is necessary to remove as many cutting beams 4 as possible.

As described above, conventionally, the above-mentioned long tubes 10, 11
In addition, there is a problem in that it takes time to remove the cutting beam 4 in the feeding path, and the work becomes complicated because the feeding must be performed in an oblique direction.

On the other hand, in order to form an opening twice as long as the conventional one, a long beam which is twice as long as the sheeting plate 2 and is passed between the sheeting plates 2 of the adjacent earth retaining device. A method of using a material (belly material) and supporting the material by bridging it inside each of the opposing seating plates 2 is used. In this case, if both ends of the flared material provided opposite to each other are connected to each other by cutting beams 4, the conventional two
Since the interval between the double cut beams 4 is ensured, if this is used as an opening, it becomes easy to insert the long tube 11. However, in this configuration, in order to form an opening having the same width, it is necessary to excavate the groove width in consideration of the thickness of the protruding material, and the assembly becomes complicated. There is.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and in particular, has a long pipe distribution in a groove in which a soil retaining device is installed, in which a long pipe can be easily disposed in the groove. The purpose is to provide an installation method.

[0011]

In order to solve the above technical problems, a method of arranging a long pipe in a trench in which a retaining device according to the present invention is installed is performed by excavating a predetermined section as shown in FIG. An earthing device 12 in which a pair of sheeting plates 2 each having a longitudinal beam 1 at both ends are opposed to each other at intervals and connected by a cutting beam 4, and a long sheeting plate having a longitudinal beam 1 at both ends. 5 are opposed to each other with an interval therebetween, and a long pipe input retaining device 13 having an interval of the cutting beam 4 longer than the length of the long pipe 9 to be laid and serving as an input port 14 is assembled in the length direction. The long pipes 9 are arranged side by side, and the long pipes 9 are sequentially lowered into the grooves from the input ports 14 and are then moved in the groove direction, so that the long pipes 9 are arranged in the sections. .

In addition to this, as shown in FIG.
It has a long sheeting plate 5 approximately twice as long as the above-mentioned sheeting plate 2, and two sheets of the above-mentioned sheeting plate 2 are superimposed on both upper half portions of the long sheeting plate 5 using a connection fitting. On the other hand, the long sheeting plate 5 'is overlapped on the two sheeting plates 2 using a connection fitting to form a three-tiered seating plate assembly, and the three-tiered seating plate assembly is formed. The above-mentioned earthing device is provided by installing the earthing sheeting plate combination bodies facing each other, and connecting between the longitudinal beams 1 provided at both ends of the opposing long sheeting plates 5 and 5 ′ by extendable cutting beams 4. That is, the earth retaining device 13 for feeding a long pipe is used.

Using the above-described method for disposing a long pipe, for example, a retaining apparatus 13 for introducing a long pipe is disposed at a central portion in a trench excavated over the predetermined section, and a retaining apparatus 12 is disposed at other locations. Are installed side by side, and retaining devices are arranged side by side over the entire predetermined section. The elongate pipe charging device 13 is used as the input port 14 of the elongate pipe 9, and the elongate pipe 9 is dropped into the groove from the input port 14 while keeping the horizontal direction, and the evacuation is performed from here. The long pipe 9 is moved in the direction of the groove where the device 12 is installed, and the long pipe 9 is disposed throughout the section.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method of arranging a long pipe in a groove provided with a retaining device according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 2 and FIG. 3 show a retaining device for charging a long pipe used in the above embodiment. This earth retaining device is composed of three upper and lower sheeting plates, the middle of which is provided with the seating plate 2 described in the above conventional example, and the upper and lower of which has a horizontal length twice as long as the seating plate 2. The long sheeting plates 5 and 5 ′ are disposed.

The sheeting plate 2 has a horizontal length of usually about 3 m. The outer surface is a flat plate made of steel and the inner surface is a plate 2a formed by a tapered frame. And a vertical beam 1. The vertical beam 1 is provided with a mounting opening 7 for a cutting beam 4 for connecting the sheeting plates to each other, and a connection fitting 3 for connecting another sheeting plate is mounted on the upper portion of the vertical beam 1. Further, the cutting beam 4 is configured to be extendable and contractible, and the interval between the sheeting plates is adjusted.

The above long sheeting plates 5, 5 '
Has a horizontal length twice as long as the above-mentioned sheeting plate 2 as shown in FIGS. 2 and 5 (when the sheeting plate 2 is 3 m, the long sheeting plates 5 and 5 ′ have a length of 6 m). ing. The long sheeting plates 5 and 5 'have a plate 5a approximately twice as long as the plate 2a and vertical beams 1 provided at both left and right ends of the plate 5a. A connection fitting 3 is provided at an upper portion of the connection member 3 so as to protrude upward. The longitudinal beam 1 is provided with a mounting opening 7 for a cutting beam 4 connecting the long sheeting plates 5 and 5 '.

Further, two intermediate vertical beams 1a are arranged in parallel at the center of the plate 5a, and two connection fittings 3a are provided on the upper surface of the center of the plate 5a to protrude upward. A cutting shoe 6 is attached to lower ends of the vertical beam 1 and the intermediate vertical beam 1a that land on the groove bottom.

At the time of assembling the earth retaining device, two sheeting plates 2 are arranged side by side on the right half and the left half of the upper side of the long sheeting plate 5,
The lower part of the longitudinal beam 1 of the seating plate 2 is fitted into the connection fittings 3 and 3a, and this connection portion is fixed using wing bolts 8, and the upper and lower seating plates are connected to each other.

Further, a long sheeting plate 5 'is connected to the two seating plates 2 arranged side by side via a connection fitting 3, and the sheeting plates are stacked in three stages as a whole. Then, by connecting the longitudinal beams 1 at both ends of the three-stage seating plate and another three-stage seating plate formed in the same manner with the cutting beams 4, the length of the three-stage stack shown in FIGS. The shank charging device 13 is assembled.

Here, a method of arranging the long pipes in the case of arranging the long pipes 9 by using the above-described long pipe charging earth retaining device 13 will be described. The length of the long tube 9 to be charged is longer than the horizontal length of the conventionally used sheeting plate 2, and the length of the long sheeting plate 5.
Those shorter than 5 'are targeted, and such long tubes 9
This method of arranging long pipes is applied when burying a long pipe.

First, as shown in FIG.
A trench is excavated over about 0 m), and a retaining device is installed in the trench. At this time, at the site where the long tube 9 is to be charged,
The above-described three-tiered long tube charging soil retaining device 13 is arranged, and in other sections, the conventional soil retaining device 12 including only the seating plate 2 is disposed.

In the above-mentioned arrangement method, the three-tiered long pipe charging earth retaining device 13 is arranged at one location substantially at the center of the predetermined section. Then, the long pipe charging soil retaining device 13 is carried into a previously excavated groove by using a crane, and is set in a predetermined position. . When the retaining device is pushed in, the pressure hood 15 is fitted into the connection fittings 3 and 3a on the upper portions of the vertical beams 1 and 1a. The beam 1 is alternately pressed, or the intermediate vertical beam 1a is pressed to gradually push the retaining device.

Further, a new three-tiered retaining device is stacked on the upper portion according to the depth of the groove, and this operation is repeated to set the retaining device to a predetermined depth. At this time, if necessary, for example, two sheeting plates 2 are juxtaposed at the lower stage,
You may make it pile up the earthing device for long pipe | tube injection | stacking which the long sheeting plate 5 is arrange | positioned at this upper stage in two steps.

In a section other than the place where the long pipe charging soil retaining device 13 is arranged, the soil retaining device 12 including only the sheeting plate 2 is disposed. Further, since the long pipe input retaining device 13 has an interval between the cutting beams 4 which is wider than the length of the long pipe 9 to be input, this is used as the input port 14 of the long pipe 9.

After arranging the retaining device over a predetermined section,
The long pipe 9 is charged into the groove from the charging port 14 using a crane or the like. At this time, as shown in FIG.
Is longer than the long tube 9, so that the long tube 9 is dropped vertically in the horizontal state and is put into the groove. This long tube 9 moves in the groove direction after being put into the groove,
Thereafter, a new long pipe 9 is inserted from the input port 14, and this operation is repeated to dispose the long pipe 9 over the predetermined section to perform predetermined embedding work.

Therefore, according to the above-described method for disposing the long pipe, in one section of the predetermined section in which the long pipe 9 is buried, the retaining device 13 for charging the long pipe is arranged so that the inlet of the long pipe 9 is provided. 14
In the other sections, a conventionally used earth retaining device 12 is disposed, and when the long pipe 9 is charged, the method using the inlet 14 is adopted. Since it can be dropped vertically and loaded in the state as it is, the work of arranging the long pipe 9 in the groove becomes easy, and the conventional retaining device 12 is used for the section other than the loading port 14. Therefore, these soil retaining devices 12 can be used effectively, and transport is relatively easy.

In addition, the above-mentioned elongate pipe charging earth retaining device 13 comprises:
A conventionally used seating plate 2 and long sheeting plates 5, 5 'having a length twice as long as this.
And multiple layers, and long sheeting plates 5, 5 '
Since the cutting beams 4 are attached to both ends of the tube, the interval between the cutting beams 4 is widened, so that the work of inserting the long pipe 9 becomes easy.

Further, since the conventional sheeting plate 2 is used as a part of the long pipe charging soil retaining device 13, the sheeting plate 2 can be effectively used and the long sheeting plates 5, 5 '. Since only the long pipe charging device 13 does not constitute the elongate pipe charging device 13, the transportation becomes easy.

[0030]

As described above, according to the method of arranging the long pipe in the groove in which the retaining device according to the present invention is installed, the length of the long pipe 9 laid with the retaining device 12 in the groove is obtained. A long pipe input retaining device 13 having an interval 14 longer than that of the cutting beams 4 is installed in parallel in combination with the elongate pipe input retaining device 13, and the elongated pipe 9 is input from the input port 14 to a predetermined section in the groove. The method of arranging the long pipe 9 in the groove becomes easy, and the section other than the inlet 14 is, for example, of the long pipe 9 conventionally used. Since it is sufficient to dispose the retaining device 12 shorter than the length, these retaining devices 12
Can be effectively used, and transportation is easy because only the minimum necessary length of the retaining device 13 for long pipes is required.

Further, the sheeting plate 2 is superimposed on the long sheeting plate 5 having a length approximately twice as long as the sheeting plate 2, and further the long sheeting plate 5 'is superposed and connected. The sheeting plate assembly is installed facing each other, and the retaining device connected between them by the cutting beam 4 is used as the above-described retaining device 13 for long pipe charging. Therefore, the conventionally used sheeting plate 2 is effectively used. In addition, since the long sheeting plates 5 and 5 'alone do not constitute a long pipe charging soil retaining device, transport and handling are easy.

[Brief description of the drawings]

FIG. 1 is a view showing a method of disposing a long pipe in a groove according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the long pipe charging soil retaining device according to the embodiment.

FIG. 3 is a perspective view of the long pipe charging soil retaining device according to the embodiment, where (a) is a perspective view as viewed from the outside, and (b).
FIG. 3 is a perspective view seen from the inner surface.

FIG. 4 is a side view of the long pipe charging retaining device according to the embodiment.

FIGS. 5A and 5B are explanatory views of a long pipe charging retaining device according to an embodiment, wherein FIG. 5A is a plan view, FIG. 5B is a front view, FIG. 5C is a partially enlarged view, and FIG. FIG.

FIG. 6 is a view showing a state of long pipe charging using the long pipe charging earth retaining device according to the embodiment.

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

FIG. 8 is a view showing a state in which a long pipe is charged using a retaining device according to a conventional example.

FIG. 9 is a view showing a state in which a large-diameter long pipe is charged by using a retaining device according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Longitudinal beam 1a Intermediate vertical beam 2 Seating plate 2a plate 3, 3a Connecting bracket 4 Cutting beam 5, 5 'Long seating plate 5a plate 7 Mounting port 9 Long pipe 14 Input port

Claims (2)

(57) [Claims] An earth retaining device in which a pair of sheeting plates (2) having longitudinal beams (1) at both ends thereof are opposed to each other at intervals in a trench excavated over a predetermined section and connected by a cutting beam (4). (12) and a pair of long sheeting plates (5) having longitudinal beams (1) at both ends thereof are opposed to each other at intervals, and a cutting beam (4) longer than the length of the long pipe (9) to be laid is provided. A long pipe charging earth retaining device (13) having an input port (14) with an interval is combined in the length direction and arranged side by side, and the long pipe (9) is grooved from the input port (14). A long pipe (9) is disposed in the section, and a long pipe (9) is disposed in the section. 2. The seating plate (2) having approximately 2
A long sheeting plate (5) having a double length, and using a connection fitting, this long sheeting plate (5)
While the two above-mentioned seating plates (2) are overlapped and connected to both upper halves of the above, a long sheeting plate (5 ') is overlaid on the two above-mentioned sheeting plates (2) using a connection fitting. To form a three-tiered seating plate assembly for soil retaining. The three-tiered seating plate assembly for soil retaining is installed facing each other, and the facing long sheeting plate (5, 5 ') is installed. 2. A retaining device for a long pipe input according to claim 1, wherein the retaining device is formed by connecting a vertical beam provided at both ends with a stretchable cutting beam. A method for arranging a long pipe in a groove provided with the retaining device according to claim 1.