JPH0791855B2 - Installation method for large concrete block products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a drainage block made of concrete efficiently,
It also relates to the installation method of large concrete block products that can be safely constructed to form drainage channels.

[Conventional technology]

Conventionally, this type, box culvert, drainage block, etc. have a weight of 1 to 3 tons, so they are hung on a base with a truck crane, etc. and still moved in the left and right direction to match the front and rear end faces of adjacent comrades. The slope of the drainage block is adjusted by driving a wedge between the grounded bottom surface of the drainage block and the base, and concrete is poured from both sides between the grounded bottom portion of the drainage block and the base to drain the water on the base. Although the block is fixed, several workers are narrow in these works, and because they work in a deep trench, workability is very poor and teamwork is missing, and if one step is wrong, a personal injury will occur. There was also a risk of causing it.

[Problems to be Solved by the Invention]

The present invention solves such a drawback, and by immediately lowering the drainage block on a rail laid on the base with a truck crane or the like, the center of the drainage direction of the drainage block is immediately determined and this drainage block is placed on the rail. By sliding it, you can connect sequentially in the drainage direction, and the slope (height) of the drainage block can be adjusted by a simple work of rotating the height adjustment bolt,
At the same time, concrete can be poured into the gap formed between the grounding bottom of the drainage block and the base to fix the drainage block on the base via the concrete. It is a technical challenge to provide a product installation method.

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

When the large-sized concrete block bodies a are sequentially arranged on the base 1, a nut cylinder 7 is embedded in series in the longitudinal direction of the grounded bottom wall 2 of the concrete block body a.
A height adjusting bolt 3 that slides on a rail 5 arranged on the base 1 is screwed to the ground bottom surface of the concrete block body a so that the protrusion degree from the ground bottom can be freely changed. Such concrete block body a
Is lifted by a crane and lowered onto the rail 5 laid on the base 1, the lower end of the height adjusting bolt 3 is brought into contact with the rail, the concrete block a is slid to a desired position, and then the height adjusting bolt 3 is rotated. Then, the concrete is injected from the concrete injection hole 4 into the gap 11 formed between the bottom surface of the upper concrete block body a and the base 1 whose height is adjusted to support the concrete block body a at a predetermined height, This concrete is hardened to fix the concrete block body a on the base 1, and this step is repeated to lay the concrete block body a on the base 1 in sequence. It is a thing.

〔Example〕

Although the concrete block body a in the drawing shows a box culvert for forming a drainage channel, it may be a U-shaped gutter block or an L-shaped block.

The rails 5 are laid (slightly buried) at the right and left of the upper surface of the concrete base plate 9 formed on the foundation portion 10 such as a steel plate or a stainless steel plate in accordance with the series intervals of the height adjusting bolts 3.

The height adjusting bolt 3 has a nut cylinder 7 embedded in the grounded bottom wall 2, and the height adjusting bolt 3 is screwed to the nut cylinder 7.

These height adjustment bolts 3 are provided at four locations on the left, right, front and back, but a concrete block (drain block) with a long overall length
In the case of, it may be provided at three places.

A recess 8 is formed at a position where the head of the height adjusting bolt 3 is located so that the head of the height adjusting bolt 3 does not protrude from the surface of the ground bottom wall 2.

The base 1 is formed by placing a concrete base plate 9 on the foundation portion 10.

When pouring mortar into the gap 11, the left and right side surfaces of the left and right walls 6 of the concrete block body a are closed by the contact plates 12 or the like to prevent concrete from flowing out.

Although the concrete injection holes 4 are shown at the front and rear ends, the number may be three or four.

〔The invention's effect〕

 The present invention has the following features.

1 The laying position of the concrete block body is determined simply by lowering the concrete block body on the rail laid on the base. Compared with the conventional method in which the drainage block is lifted, it is moved left and right to determine the center. The concrete block body can be easily positioned.

2 By sliding this concrete block on the rail, you can easily match the end faces of your neighbors.

In this case, since the thin height adjusting bolt slides on the rail, it can be pushed and easily carried out by a few workers, and the work efficiency is improved accordingly.

3 The gradient and height of this concrete block body can be adjusted extremely simply because only one operator needs to rotate the height-adjusting bolt using a rotating tool, and it can be performed accurately.

Further, when the width of the trench is narrow, the height adjusting bolt can be rotationally adjusted inside the drainage block, which is extremely convenient.

4 Concrete is injected into the gap formed between the grounded bottom wall of the concrete block body and the base through a concrete injection hole, and the concrete is hardened to fix the concrete block body and the base through the concrete. The block body can be firmly fixed on the base.

5 As described above, the present invention provides an excellent installation of a large-sized concrete block product that enables a large number of large-sized concrete block bodies that are heavy even in a narrow trench to be efficiently and safely operated by only a few workers. Will provide the law.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a plan view showing an installation method, FIG. 2 is a perspective view of a drainage block, and FIG. 3 is a side sectional view showing an installation state of the present invention. . 1 ... Base, 2 ... Ground bottom wall, 3 ... Height adjustment bolt, 4 ... Concrete injection hole, 5 ... Rail, 7 ...
Nut cylinder, 11 …… Gap, a …… Concrete block body.

Claims (1)

[Claims] 1. When a large-sized concrete block body is sequentially installed in parallel on a base, a nut cylinder is embedded in series in a longitudinal direction of a grounded bottom wall of the concrete block body, and the nut cylinder is mounted on a rail arranged on the base. The height adjustment bolt that slides is screwed so that the degree of protrusion from the ground bottom can be freely changed, a concrete injection hole is drilled in the ground bottom wall of the concrete block, and the concrete block is hung by a crane and laid on the base. Lower it on the rail, make the lower end of the height adjustment bolt abut on the rail, slide the concrete block body to the desired position, and then rotate the height adjustment bolt to support the concrete block body at a predetermined height. From the concrete pouring hole, concrete is inserted into the gap formed between the bottom of the adjusted upper concrete block and the base. Injecting the door, the concrete block member fixed on the base by curing this concrete,
A method for installing a large-sized concrete block product, characterized in that this process is repeated to sequentially lay this concrete block body on a base.