JPS63171902A - Coated plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a lining board used primarily when drilling holes for installing water pipes, sewer pipes, gas pipes, etc. on roads.

(Prior art) When laying pipes such as water pipes, sewer pipes, gas pipes, etc. on a road, steel sheet piles are continuously placed facing each other at predetermined intervals, and the spaces between the rows of sheet piles are excavated and laid. A hole is formed and the installation pipe is buried.

As shown in FIG. 5, the conventional method for cutting a laying hole is as follows: First, a road surface 50 is dug to a predetermined depth along the direction in which the laying pipe 57 is buried to form a shallow groove 51 of a predetermined width. Sheet piles 32, 52, etc. are placed facing each other on both sides of the groove 51, allowing for extra moats, and excavation is made between the sheet piles 52, 52, and so on.

By the way, if the sheet pile 52 cannot stand on its own due to earth pressure due to the excavation depth, a bracket 53 is installed inside the upper part of the sheet pile 52.
．． 53 is welded to the bracket 53.53, and a backer 54.54 made of H-shaped steel or the like is horizontally erected along the sheet pile 52.52, and an H-shaped steel or the like is installed between the two backer 54.54. After the sheet piles 52 are prevented from tilting and collapsing due to earth pressure, a laying hole 56 is formed to a predetermined depth, and a laying pipe 57 is laid.

In addition, when laying water and sewer pipes in areas with narrow road widths or roads with heavy traffic, sheet piles are used because the construction site must be used as a road during the day, as shown in Figure 6. 52. H-shaped steel stand 5 is placed in the groove 51 on both sides of the upper part of 52.
8.58 is laid, and a lining board 59 is erected on top of this to make it temporarily passable. And at night, this lining board 5
9 was removed and the previous installation work was carried out.

In both of the above two conventional examples, when the installation work is completed, the installation hole 5
6 was backfilled with earth and sand, and the struts 55, backing 54, etc. were removed and the sheet piles 52, 52, etc. were pulled out.

(Problems to be Solved by the Invention) In the above-mentioned conventional example, in order to prevent the sheet piles from tilting due to earth pressure and to perform the laying work safely and easily, brackets are welded to the driven sheet piles so that they can be restored. It was necessary to install reinforcing tools such as beams and struts, and it was also necessary to remove these reinforcing tools when pulling out the sheet piles, but since installing and removing these reinforcing tools was troublesome and time-consuming, This method has the disadvantage that the work for laying the rope takes a long time, and the installation work itself also takes a long time.

Furthermore, in places with narrow road widths and roads with heavy traffic,
When laying water and sewer pipes, etc., work cannot be done during the day, and the lining plates must be repeatedly attached and detached each time the laying work is carried out, which can lead to problems in terms of work time loss and safety. Ta.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a lining board that can shorten the working time of the cable laying work and allow the cable laying work to be carried out safely and quickly regardless of whether it is day or night.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention includes a support mechanism that supports the sheet piles by holding the upper portions of the sheet piles that are driven facing each other at a predetermined interval. The present invention is characterized in that a substrate portion is integrally formed on the upper part of the support mechanism.

(Function) In the present invention, a removable lining board is attached to the upper part of the sheet piles that are placed facing each other by its support mechanism, and this support mechanism absorbs the earth pressure applied to the sheet piles, and the lining board With the cables still attached, form the installation holes between the sheet piles in the same direction. Like you,
Since the lining board supports the sheet pile and receives earth pressure, there is no need to raise the sheet pile or attach or remove struts, etc., which shortens the work time for retaining the pile and simplifies the installation work. In addition, the base plate above the lining board can be used as a road as well as a workshop.

(Example) Next, an example of the present invention will be described based on the accompanying drawings. Figure 1 is a sectional view showing the lining board installed, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, Figure 3 is a plan view of the lining plate, and Figure 4 is the IV of Figure 3. It is an explanatory view showing a ta cutting method in a sectional view taken along the line -IV.

As shown in FIG. 2, a lining board 4 of a predetermined width is laid on top of the continuous sheet piles. The lining board 4 consists of a base plate part 5 that covers the upper part of the sheet pile 3, and a support mechanism 6 that is provided on the base plate part 5 and supports the upper part of the sheet pile 3.

The floor plate 7 on the upper surface of the base plate 5 is made of, for example, a checker plate, and a plurality of girders 8,8, etc. made of H-beam steel are welded to the lower part of the floor plate 7. It is placed on the top of the sheet pile 3 so as to be perpendicular to the driving direction of the sheet pile row, and supports the overlay load.

The support mechanism 6 is installed at two locations near both ends of the lining plate 4, and is preferably installed at two or more locations, but may be mounted at one location. This support mechanism 6 consists of a cylinder 9 fixed to the center of the girder 8 by a mounting member 11.11, and rods 10.10 slidably provided on both sides of the cylinder 9. It expands and contracts with fluid pressure such as liquid or gas, adjusts the position of the arm 12.12 described later, and fixes it at a fixed position. Note that the support mechanism 6
Instead of the mechanism of the cylinder 9 and rod 10, a screw or the like may be used.

Arms 12.12 arranged at both ends of the beam member 8.80 are connected to the tip of the rod 10.10.
2 is an L-shaped guide 13.13 welded to the inside of the girder 8.
It slides while being guided by. The lower part of the arm 12 has an inner claw part 12a and an outer claw part 1 configured to straddle the upper end of the sheet pile 3.
2b, and on this inner claw part 12a (Yo, girder material 8
A restoring member 14 is attached at right angles to the lining plate 4 and has the same length as the lining plate 4, and a clamp 15 is attached to the outer claw portion 12b.
is provided. This clamp 15 is composed of a fluid cylinder operated by fluid or gas.
4 to clamp and fix the sheet pile 3. Note that the clamp 15 may be configured with a screw jack instead of the fluid cylinder.

As mentioned above, in the lining board of this embodiment, since the support mechanism for the upper end of the sheet piles 3.3 is integrally formed in the lining board 4, the lining board 4 and the sheet pile 3 are not connected during use. Since the support mechanism can be attached and detached at the same time, it has the advantage of shortening the time required for heaping and laying work, and also allows for reliable and safe laying work.

Next, the function of the above-mentioned lining plate will be explained.

First, the road surface 1 is excavated to a predetermined depth along the burying direction of the installation pipe 16 to form a shallow groove 2'' of a predetermined width. They are placed facing each other until their upper parts are at a predetermined position below the road surface 1.

Next, the cylinder 9 and rod 10 of the support mechanism 6 built into the lining board 4 are operated to adjust the position of the arm 12, so that the distance between the arms 12 and the sheet piles 3.3 that are driven opposite each other is adjusted. do it like this. After that, the inner claw part 12a and the outer claw part 12b of the arm 12 are engaged so as to straddle the upper end of the sheet pile 3.3, the lining board 4 is placed on the sheet pile 3.3, and the outer claw part 12b
By activating the clamp 15 provided at the top and clamping the upper part of the sheet pile 3.3 between the clamp 15 and the lifter 14, the lining board 4 is fixed onto the sheet pile 3.3 by the support mechanism 6. .

By holding the upper end of the sheet pile 3.3 with the support mechanism 6 in this way, the lining board 4 is fixed to the sheet pile 3.3, and the sheet pile 3.3 can also stand on its own on the tonosho. be.

After that, an exit for the excavated soil (not shown) is secured, and as shown in Fig. 4, with the lining board 4 still attached to the sheet pile 3.3, the earth is deposited at the planned height starting from the part closest to the exit. Perform 17 excavations.

At this time, the earth pressure applied to the sheet pile 3.3 is received by the arm 12 of the support mechanism 6 as described above, and the pressure is transmitted to the girder 8 via the support mechanism 6, thereby preventing the sheet pile 3 from collapsing. Through this excavation, a laying hole 18 is formed, and a laying pipe 16 is placed in a predetermined place.
to be laid down.

When this laying is completed, the lining board 4 is left on the sheet pile 3 or is removed, earth and sand is carried into the laying hole 18 to fill it, and the sheet pile 3 is pulled out to complete the laying.

(Effects of the Invention) As described above, according to the present invention, a lining plate is attached to the top of the poured sheet pile, and the support mechanism integrated with the lining plate can absorb the earth pressure from the sheet pile. This eliminates the need to erect reinforcing tools such as struts and hoists when excavating the installation hole, reducing the time required for installation work.

In addition, with the present invention, it is possible to excavate between the sheet piles with the lining board attached, so when laying pipes under the road,
Road access is ensured while working in front of the garden, and other work can be done on the lining board, saving work space. In addition, there is no need to attach and detach the lining plate every time excavation or piping installation work is performed, improving work efficiency. Furthermore, even when the piping is not covered with earth, there are no struts, so it does not get in the way of excavation or piping work.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and Fig. 1 is a sectional view of the lining board installed, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a plane view of the lining board. Figure 4 is IV-I of Figure 3.
It is an explanatory view showing the method before the start of construction as a cross-sectional view taken along the I/ line, and FIGS. 5 and 6 are cross-sectional views of a conventional example in which a lining board is installed. 1... Road surface 3... Sheet pile 4... Lining board 5... Substrate part 6... Support mechanism 18... Installation hole agent Patent attorney 1) Middle 2
Figure 2 Figure 3 Figure 4

Claims (2)

[Claims] (1) A base plate is formed on the upper part of the sheet piles that are driven facing each other at a predetermined interval, and a support mechanism that supports the sheet pile by holding the upper part of the sheet pile is integrated in the lower part of the base plate. A lining board characterized by comprising: (2) The support mechanism includes an arm that clamps the upper part of the sheet pile, and a position adjustment section that is fixed to the base plate to move the arm. lining board.