JP2633435B2 - Liner plate assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liner plate assembly which is used, for example, as a temporary retaining material for a shaft or a drainage well.

[0002]

2. Description of the Related Art In the current construction work, various steel materials are used as temporary materials in place of conventional wood and concrete. For example, when a shaft is constructed, a circular simple soil using a steel material liner plate is used. Stops are employed.

As shown in FIG. 4, a method for constructing this circular simple earth retaining type shaft is to excavate a hole 1 having a depth of about 0.5 M according to the diameter of the shaft to be constructed as shown in FIG. A plurality of liner plates 2, 2,... Are arranged along the wall surface of the hole 1, and the adjacent liner plates 2, 2 are connected to each other with a fixture such as a bolt and nut to form a cylindrical liner plate 3. After backfilling the soil between the cylindrical liner plate 3 and the surrounding ground or filling the backing material with grout, as shown in FIG. Dig down about 0.5M so that it can be connected, and a plurality of liner plates 2,
Are arranged, and the adjacent liner plates 2 and 2 are connected to each other with fixing devices such as bolts and nuts to form a cylindrical liner plate 3. The cylindrical liner plates 3 are connected to each other. Similarly, as shown in FIG. 6, the cylindrical liner plate 3 is formed by further assembling a liner plate having a depth of about 0.5 M and forming the cylindrical liner plate 3. 3, and sequentially assembles the tubular liner plate 3 to a predetermined depth as shown in FIG. Here, the numbers assigned to the liner plates in FIG. 7 indicate the order of assembling the liner plates.

[0004]

The tubular liner plate of the above type is disassembled by sequentially removing it from the liner plate constituting the lowermost tubular liner plate after the shaft is constructed. There is no gap in the cylindrical liner plate due to the soil and filler used to eliminate voids, and the earth pressure is acting. A considerable amount of labor and skill are required to remove the first liner plate, and it is demanded by a worker on the site that the removal of the first liner plate be performed in a short time and easily.

Therefore, a crosspiece is sandwiched between the liner plates of the cylindrical liner plate, and after removing the crosspiece, 1
Technical means have been proposed in which the first liner plate is removed in a short time by removing the second liner plate. In this case, the hole size of the crosspiece is determined by the hole interval of the liner plate. It requires time and effort to install the crosspiece, to make the holes of the gasket to match the joint holes between the upper and lower pieces of the liner plate, and to make the joint with the liner plate insufficient or to corrode the crosspiece. As a result, breakage may occur at this location due to groundwater blowing or earth pressure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a liner plate assembly in which the first liner plate can be easily and quickly removed from the liner plate assembly after construction. The purpose is to provide.

[0007]

SUMMARY OF THE INVENTION A liner plate assembly of the present invention is formed by connecting a plurality of liner plates together and is located at an end surface of the liner plate located along the wall surface of the drilled hole. A liner plate main body arranged so as to form an interval therebetween, and two trapezoidal pieces having one inclined surface, which are formed by connecting the two trapezoidal pieces to each other with a fixture, and arranged between the liner plates located at the end side. And a bee-shaped liner plate connected to a liner plate positioned on both sides at the ends.

[0008]

According to the liner plate assembly of the present invention, for example, when a plurality of stages are installed for constructing a shaft, the liner plate assembly of each stage has a back portion filled with backing material, no gap, and earth pressure is reduced. In order to remove the first liner plate of the liner plate assembly of each stage while operating, the two trapezoidal pieces can be removed by loosening the fixture of the bee-shaped liner plate provided on the liner plate body. Disconnect the connection, and then disconnect the one trapezoidal piece with the wide inside and the liner plate located on the end side connected to this to remove the trapezoidal piece with the wide inside from the liner plate body. Remove the inner trapezoidal piece, then disconnect the other trapezoidal piece of the bee-shaped liner plate from the liner plate connected to it so that the other trapezoidal piece is liner-plated. Using the space after removing from the main body and removing the bee type liner plate from the liner plate main body, the first liner plate is removed from the liner plate main body using a dismantling tool such as a bur, The effort and time required to remove the first liner plate of the liner plate assembly under earth pressure is reduced.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIG. 1, the same members as those in FIG. 5 are denoted by the same reference numerals. In FIG. 1, reference numeral 10 denotes a bee-shaped liner plate. The bee-shaped liner plate 10 is, for example, a cast product or a processed iron material, and has a substantially cylindrical shape formed by connecting a plurality of liner plates to each other. Liner plate piece 2a located at the end of liner plate body 3
And a liner plate assembly fixed by a fixture.

The liner plate 2 is made of a corrugated iron plate or other metal plate having four sides with flanges.
1 is provided with a plurality of mounting holes 12 at regular intervals. The mounting holes 12 provided in the upper flange 11 and the lower flange 11 of the liner plate 2 are for connecting the liner plates 2 arranged in the vertical direction with a fixing tool such as a bolt and nut. Mounting holes 12 provided on both side flanges 11
Is for connecting the liner plates 2 arranged in the lateral direction with a fixture such as a bolt and nut.

As shown in FIGS. 2 and 3, the bee-type liner plate 10 has an outer surface of one side wall 13 joined to an outer surface of the end flange 11 of the end liner plate 2a, and the other side wall 14 And a trapezoidal piece 15 having an outer surface inclined as an outer surface, and an outer surface of one side wall portion 13a is similarly joined to an outer surface of the end flange 11 of the liner plate 2a, and an outer surface of the other side wall portion 14a is formed as a side wall portion 14. And a trapezoidal piece 16 having an inclined surface corresponding to the outer surface of. The two trapezoidal pieces 15 and 16 are connected to the side wall part 14.
The side wall portion 14 and the side wall portion 14a are joined so that the mounting hole provided in the side wall portion and the mounting hole provided in the side wall portion 14a coincide with each other, and the bolt 17 is inserted through the mounting hole provided in the side wall portion 14 and the side wall portion 14a. The nuts 18 are connected to each other by screwing the nuts 18 into the threaded portions 17. Also, the side wall 1 of the trapezoidal piece 15
3 is a mounting hole 1 corresponding to a mounting hole 12 provided in a side flange 11 of the end side liner plate 2a to be joined.
2a are formed, and the side wall portion 13a of the trapezoidal piece 16 is attached to the side flange 11 of the end side liner plate 2a to be joined.
Mounting holes 12a are formed corresponding to the mounting holes 12 provided in the mounting holes 12a. End side liner plate 2a and trapezoidal piece 15
Are attached so that the mounting holes 12 and the mounting holes 12a provided in the side flanges 11 are fitted to each other, and the fixing tools (bolts and nuts) 1 are inserted through the mounting holes 12 and the mounting holes 12a.
9 are connected. The end-side liner plate 2a and the trapezoidal piece 16 are joined so that the mounting holes 12 and the mounting holes 12a are fitted to each other, and are connected by a fixing tool (bolt and nut) 19 inserted into these mounting holes.

The plurality of liner plate assemblies are connected to each other by fixtures. FIG. 3 shows a trapezoidal piece 16 constituting a bee-shaped liner plate 10 and an upper liner plate. A fixture 20 for connecting the tubular liner plate body 3 of the assembly and a trapezoidal piece 16 constituting the bee-shaped liner plate 10 and a fixing for connecting the tubular liner plate body 3 of the lower liner plate assembly. Only the tool 21 is shown.

Next, the operation will be described. In order to use the liner plate 2 for the construction of a circular simple earth retaining shaft, FIG.
As shown in Fig. 5, a hole 1 having a depth of about 0.5M corresponding to the diameter of the shaft was excavated, and a plurality of liner plates 2, 2, ... were arranged along the wall of the hole 1 as shown in Fig. 5. Then, the adjacent liner plates 2 and 2 are connected to each other with a fixing tool 19 such as a bolt and nut to form the liner plate body 3 having a substantially cylindrical shape. Next, the bee-shaped liner plate 10 is arranged between the liner plates 2a, 2a located on the end side of the liner plate main body 3 so that the wide side of the trapezoidal piece 15 is on the inside.
The end-side liner plates 2a and 2a adjacent to the bee-shaped liner plate 10 are connected by a fixture 19 having bolts and nuts to form a liner plate assembly. Then, the soil is buried between the tubular liner plate 3 and the surrounding ground, or the backing material is filled with mortar grout.

When the filling of the backing material is completed, as shown in FIG. 6, a plurality of liner plates 2, 2,... Of the second stage are dug down by about 0.5M so that they can be connected to the liner plate assembly. The liner plate 2 is assembled to form a cylindrical liner plate 3, and a bee-shaped liner plate 10 is connected to the cylindrical liner plate 3 to form a liner plate assembly. The liner plate assembly and the upper liner plate assembly are assembled. The bodies are connected to each other by fasteners such as bolts and nuts, and similarly, as shown in FIG. 6, the liner plate and the bee-shaped liner plate are assembled to form a liner plate assembly. The plate assembly and the upper liner plate assembly are connected to each other with fasteners such as bolts and nuts, The assembly of the liner plate assembly to a predetermined depth as shown in 7. When assembling this liner plate assembly, the liner plate assembly is shifted in the circumferential direction by about half the length of the liner plate 2 so that the vertical seams of the liner plate assemblies of vertically adjacent stages do not overlap with each other. It is desirable to be located at. The filling of the backing material with mortar grout may be performed at each stage or at several stages.

Next, when the construction of the circular simple earth retaining type shaft is completed and the liner plate assembly is to be removed from the shaft, first, the bezel provided on the cylindrical liner plate body 3 of the lowermost liner plate assembly is used. Mold liner plate 1
The nut 18 is removed from the bolt 17, thereby disconnecting the two trapezoidal pieces 15, 16 of the bee-shaped liner plate 10. One trapezoidal piece 15 with wide inside
Are not connected to the tubular liner plate body 3 of the liner plate assembly located at the upper stage, so that the trapezoidal piece 15 and the end-side liner plate 2 connected thereto are not connected.
The trapezoidal piece 15 whose inside is widened by disconnecting the connection of a
Is removed inward from the end liner plate piece 2a. When the trapezoidal piece 15 is removed, the trapezoidal piece 16 and the end side liner plate 2a connected thereto are disconnected, and the trapezoidal piece 16 and the liner plate assembly located above the trapezoidal piece 16 are assembled. By disconnecting the body from the tubular liner plate body 3, the trapezoidal piece 16
Is removed from the end-side liner plate 2a.

After the bee-shaped liner plate 10 has been removed from the liner plate assembly, the end liner plate 2a adjacent to the trapezoidal piece 16 and the side liner plates 2 connected to the end liner plate 2a and By disconnecting the upper liner plate 2 and utilizing the space after the bee-shaped liner plate 10 has been removed,
The end side liner plate 2a adjacent to the trapezoidal piece 16 is removed from the liner plate body 3 by using a demolition tool such as a bar. Hereinafter, the liner plates 2 are sequentially removed by disconnecting the liner plates 2 adjacent to each other in the lateral direction and the liner plate 2 of the upper liner plate assembly. In this way, even when a considerable earth pressure is acting on the liner plate assembly, the operation of removing the first liner plate from the liner plate assembly can be performed easily and in a short time. Can be improved.

In the above embodiment, after removing the trapezoidal piece 15 having a wide inside, the detached trapezoidal piece 1 is removed.
The trapezoidal piece 16 connected to 5 is subsequently removed, but the end-side liner plate 2a adjacent to the trapezoidal piece 15 having a wide inside may be subsequently removed, or the inside may be wide. After the trapezoidal piece 15 is removed, the trapezoidal piece 16 and the end-side liner plate 2a connected to the trapezoidal piece 16 may be integrated and subsequently removed.

A number of liner plates having a large number of specifications are made corresponding to the shape of the hole to be installed, for example, a circular hole or an oval hole. If the height of the bee-shaped liner plate is 50 cm, it can be used without changing the design of all kinds of liner plate assemblies, and the bee-shaped liner plate can be used repeatedly as it is .

[0019]

As described above, according to the present invention, the removal of the first liner plate from the liner plate assembly of each stage after construction can be performed in a short time and easily. The bee-shaped liner plate is incorporated into various liner plate assemblies without design change, and is versatile. Further, the bee-shaped liner plate can be used repeatedly as it is.

[Brief description of the drawings]

FIG. 1 is a view showing a construction state of a liner plate assembly according to the present invention.

FIG. 2 is a diagram showing a main part of a liner plate assembly according to the present invention.

FIG. 3 illustrates a bee-shaped liner plate incorporated into a liner plate assembly according to the present invention.

FIG. 4 is a diagram showing a first stage of a method for constructing a circular simple earth retaining type shaft.

FIG. 5 is a view showing a second stage of the method of constructing the circular simple earth retaining type shaft.

FIG. 6 is a view showing a third stage of the method of constructing the circular simple earth retaining type shaft.

FIG. 7 is a diagram showing the fourth and subsequent stages of the method for constructing a circular simple earth retaining type shaft.

[Explanation of symbols]

 Reference Signs List 1 hole 2 liner plate 2a end side liner plate 3 cylindrical liner plate main body 10 bee-shaped liner plate 11 flange 14 inclined surface 14a inclined surface 15 trapezoidal piece 16 trapezoidal piece 17 fixing tool 18 fixing tool

Claims (1)

(57) [Claims] 1. A liner plate formed by connecting a plurality of liner plates together and arranged so as to form a gap between the end faces of the liner plates located at the end side along the wall surface of the drilled hole. A main body and two trapezoidal pieces each having an inclined surface on one side are formed by connecting each other with a fixture, and are disposed between the liner plates located on the end side. A liner plate assembly having a connected bee-shaped liner plate.