JPS63304835A - Construction work of large-size concrete block - Google Patents

Abstract

PURPOSE:To raise the efficiency of operation by a method in which the front and back sides of a block are positioned by sliding it on a roller on the base and its height is also determined by a height adjustor, and concrete is placed into the space between the bottom of the block and the base. CONSTITUTION:Rollers 2 are set on the front and back sides of the base 1, a block (a) is put on the rollers 2 and moved back and forth in a sliding manner for positioning the front and back ends of the block (a). Height adjustors (b) are set on the four corners of the bottom 3 of the block (a) to support the block (a), the rollers 2 are removed, and the adjustors (b) are operated to determine the height of the block (a). The block (a) is supported through a spacer 5 between the bottom 3 and the base 1, and the adjustors (b) are removed. The apertures 4 in the front and back sides of the bottom 3 are closed and concrete 9 is placed from an injection port 8 into the aperture 4 and hardened.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to large retaining wall blocks, drainage ditch blocks, fence culvert blocks, box culverts, etc. used when constructing retaining walls, drainage ditches, drainage tunnels, etc. Concerning the construction method of concrete blocks.

[Conventional technology]

When constructing retaining walls, drainage ditches, and drainage tunnels by arranging large concrete blocks of this kind, the blocks are transported to the site by transport vehicle (truck), lifted by a drag crane, etc., and placed directly on the base (foundation crushed stone). and then arrange them in order.

In this case, the front and rear ends of adjacent blocks must match, and the top and bottom heights must also match.

However, since the top of the base is not necessarily horizontal, it is not easy to match the front and rear ends or the top and bottom heights.

Conventionally, several workers (
A team of 5 to 6 people moves and positions the block while intervening an object between it and the base, but it is difficult because the block itself is large and heavy, and the work is difficult because the footing is poor. It was slow and dangerous work.

In particular, in the case of retaining wall blocks, it is difficult because the retaining wall boards must be flush with each other in order to make the retaining wall surface look good.
In addition, in the case of drainage ditch blocks and box culverts, it was difficult to install them in parallel while also setting a drainage slope in the direction in which they were installed.

[Problems to be solved by the invention] The present invention solves these drawbacks, and only -2 to 3
A technical challenge is to form retaining walls, drainage ditches, drainage tunnels, etc. by efficiently arranging blocks in a way that allows human workers to easily and safely align the front and rear ends of the blocks and the heights of the top and bottom.

[Means for solving problems]

Concrete blocks a used when forming retaining walls, drainage ditches, drainage tunnels, etc. by sequentially arranging them on base 1.
, a rolling body 2 is provided at the front and rear of a base 1, and a block a is lifted onto the rolling body 2 by a truck crane or the like and is lowered with the bottom part 3 facing down.
After aligning the front and rear ends of the block 8 by sliding it in the front and back direction through the rolling body 2, and installing height adjustment devices at the four corners of the bottom 3 of this block a, the rolling body 2 is After removing the height adjusting device and supporting the block a on the base through the gap 4, and adjusting the height of the block a with this height adjusting device, in this state, the bottom part 3 of the block a and After supporting the block a on the base 1 by interposing a spacer 5 between it and the base 1, the height adjustment device is removed, and the gap 4 at the front and rear ends of the bottom 3 of the block a is closed with the formwork 7. , in this state, the bottom 3 of block a
Concrete 9 is injected into the gap 4 through a concrete injection hole 8 that has been drilled in advance, the concrete 9 is hardened, and the block a is fixed on the base 1.

〔Example〕

FIG. 1 illustrates the case where a retaining wall is formed by the steps shown in FIGS. 6 to 10 using a retaining wall block consisting of a horizontal rectangular table plate 11 and a retaining wall plate hill. Notches 13 are formed at the four corners to removably support the height adjustment device,
In addition, concrete injection holes 8 are provided at several locations on the horizontal rectangular underframe 11.
is perforated.

This height adjustment device is constructed by fixing a nut 15 to the support plate 14 that supports the lower surface of the horizontal rectangular frame 11, as shown in FIG.
Although the illustration shows a case in which the height is adjusted by rotating the bolt 16 from above, it is also possible to screw the bolt 16 from below and rotate it from the side of the gap 4, as shown in Fig. 5. .

It is best to prepare spacers 5 of different sizes and use them in accordance with the gap 4, and preferably to use them at 3 to 4 locations on the horizontal rectangular frame 11.

This spacer 5 is preferably made of iron, plastic, or wood.

As the rolling body 2, it is preferable to use an iron round bar, iron pipe, etc. that is longer than the center of the left and right sides of the height adjustment device.

The formwork 7 can be used to hold down the concrete so that it does not flow out, so it is preferable to use metal plates, wooden plates, plastic plates, etc.

In the figure, 6 is a steel plate supporting the bolt of the height adjustment device.

Figure 11 shows the height adjustment device for the drain block already installed on the base 1.
The figure shows the case where it is supported above.

FIG. 12 shows the case in which the box culvert is also supported on the base 1 with the height adjustment device.

In both cases, notches 13 are formed at the four corners of the bottom part 3, and the height adjustment device is supported by the notches 13. From the notches 13, tightening is done by turning the bolt 16 with a tool to adjust the vertical height. It's being adjusted.

Incidentally, it is preferable that the retaining wall blocks, drainage ditch blocks, and box culverts be fixed to each other, that is, at their left and right ends, using connecting means such as bolts and nuts, as necessary.

〔Effect of the invention〕

Since the present invention is configured as described above, it has the following features.

! By moving the block a back and forth via the rolling body 2, positioning of the front and rear ends of the block a can be performed by about two workers without requiring any labor.

2. Once the position of the rear end of block arfN is determined, install height adjustment devices at the four corners of the bottom 3 of block a and
By supporting the block a, removing the rolling body 2, and adjusting the height adjustment device to move the block a up and down.
The height of the rib block a can be adjusted by about two workers without requiring any effort.

3. Once the height of block a is determined, the bottom 3 of block a
and the base 1 with a spacer 5 interposed between the block a
After supporting the height of the concrete, remove the height adjustment device, close the gap 4 after eruption in the bottom 3, and pour concrete 9 into the gap 4 from the concrete injection hole 8 through the concrete injection hole pipe 17. When this concrete 9 hardens, the block a is solidified on the base 1 via the concrete 9.

After this concrete 9 has hardened, the formwork 7 is removed.

In this case, by placing the blocks a side by side on the base 1 and pouring the concrete 9 one after another, the concrete pouring work can be carried out efficiently, and the work efficiency is improved accordingly.

4. As described above, the present invention can reduce the labor for aligning the front and rear ends of block a and adjusting the height by 1/3 compared to the conventional method, which greatly improves work efficiency and allows block a to be placed on base 1. Since it can be fixed integrally with concrete 9, it is possible to form strong retaining walls, drainage ditches, drainage tunnels, etc. Also, in the case of retaining walls, the retaining wall surface is slightly sloped, but in this case as well. A retaining wall with good appearance can be made by tilting the block a in the front-back direction, and in the case of a drainage ditch or drainage tunnel, a drainage slope is formed smoothly and drainage can be smoothly carried out.

Furthermore, since the height adjusting device b1 formwork 7 can be removed and used again, an economical method of constructing large concrete blocks is provided.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show one embodiment of the present invention, in which Fig. 1 is a slope view of a retaining wall, Fig. 2 is a plan view thereof, Fig. 3 is a side view thereof, and Fig. 4.5 The figure is a front view of the height adjustment device, Figures 6 to 10 are explanatory diagrams showing the process order of this construction method, and Figure 11 is a side view when making a drainage ditch using another example of a drainage ditch block. FIG. 12 is a side view of a case where a drainage tunnel is constructed using another example of a box culvert. a...Block, ■...Base, 2...Rolling body, 3
...Bottom, 4.Gap, 5.Spacer, 7.Formwork, 8.Concrete injection hole, 9.Concrete. June 1, 1985 Applicant: Fuji Shoji Co., Ltd. 7δa 7//Measurement

Claims (1)

[Claims] Concrete blocks a used when forming retaining walls, drainage ditches, drainage tunnels, etc. by sequentially arranging them on base 1.
, a rolling body 2 is provided at the front and rear of a base 1, and a block a is lifted onto the rolling body 2 by a truck crane or the like and is lowered with the bottom part 3 facing down.
After aligning the front and rear ends of block a by sliding it in the front and back direction through the rolling body 2, and installing height adjustment devices b at the four corners of the bottom 3 of this block a, the rolling body 2 is After removing and supporting block a on the base with gap 4 using height adjustment device b, and adjusting the height of block a using height adjustment device b, in this state, the bottom part 3 of block a and After supporting the block a on the base 1 by interposing a spacer 5 between it and the base 1, the height adjustment device b is removed, and the gap 4 at the front and rear ends of the bottom 3 of the block a is closed with the formwork 7. , in this state, the bottom 3 of block a
This method of constructing a large concrete block is characterized by injecting concrete 9 into a gap 4 through a concrete injection hole 8 previously drilled in the concrete block, hardening the concrete 9, and fixing the block a on the base 1.