JPH0711131B2 - Basic construction method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a basic construction method for construction. More specifically, it relates to a method for strengthening the ground in soft ground.

(Conventional technology and problems) Normally, when building a house, etc., first, the land to be built is leveled, then concrete concrete is struck according to the shape and layout of the house, etc., and then the building is built on it. The work proceeds in the procedure of building.

In this case, it is desirable that the place where the house is to be built is a land with good transportation, communication and other living environment and that is strong and stable. , For example, there are many cases where it is unavoidable to build on soft ground such as fields. Of course, when building a house on such a land, measures are taken such as embankment on the land and strengthening the basic concrete, but in many such land, the ground is a mud layer. Since it is constructed, the embankment and the foundation concrete itself settle down with the passage of time.

Therefore, it has long been desired to develop a simple method for strengthening the soft ground.

(Means for Solving Problems) The present invention has been made in view of the above points, and is the same as or different from the outer shape of a house or the like on the surface portion of the land where a house or the like is to be constructed. A slightly wider range of 100 to 500
It is characterized in that a recess is formed by digging down to a depth of about mm, and closed-cell concrete with a specific gravity of about 0.3 to 1.2 is driven into this recess to form a board-shaped block, which is used as the basis of a house or the like. Is.

(Operation) Therefore, according to the present invention, the earth and sand in the vicinity of the surface layer of the ground under the basic concrete is replaced with a plate-shaped block made of closed-cell concrete having a specific gravity of about 0.3 to 1.2, thereby strengthening the ground and the surface layer portion. It prevents the deformation and the surface layer is lightened to prevent the sedimentation phenomenon.

(Example) Hereinafter, the present invention will be specifically described based on illustrated examples.

First, the land 1 on which a house or the like is to be built is leveled, a part of it is dug down to a depth of 100 to 500 mm to form a depression, and if necessary, the bottom surface is tamped or mortar is applied. Shape the bottom.

Next, closed-cell concrete is driven into this recess to form the board-shaped block 2. The shape of the board-like block 2, in other words, the shape of the depression is not particularly limited. The point is that it is important to have sufficient proof strength to support the weight of the house, etc., and it is formed according to the scale of the house, the strength of the ground, etc. It is desirable to form it slightly larger than that, and it is also desirable to make the outer peripheral portion slightly deeper.

The closed-cell concrete has a large number of closed cells and has a specific gravity of about 0.3 to 1.2.

Subsequently, the foundation concrete 3 is cast on the board-shaped block 2 by a conventional method, and a house or the like is constructed on the foundation concrete 3.

By the way, in this case, as shown in the figure, it is preferable that the portion of the board-like block 2 located outside the outer periphery of the basic concrete is made slightly lower than the ground surface and covered with soil. That is, in this way, this portion is integrated with the surrounding ground, so that the sense of discomfort is eliminated.

(Effect) As described in detail above, the present invention is
It is a foundation that is formed by digging a region slightly wider than the outer peripheral shape of the house on the surface of the land to a depth of about 100 to 500 mm, and then driving closed-cell concrete into this recess to form a foundation. It becomes stable as it is placed on a monolith. Moreover, in the past, in order to reinforce the mud ground, it had to be dug deeply and filled with new sediment, so the cost was high and the treatment of dug soil was extremely difficult. In contrast to this, according to the present invention, the board-like block is formed by using closed-cell concrete having a small specific gravity, and the board-like block is added to the ground by being integrally formed. Since the weight of the house is distributed, 100 blocks
Since the thickness of 500 to 500 mm is sufficient, the cost and labor required for the above-mentioned ground reinforcement can be significantly reduced. Moreover, in mud, buoyancy acts on the board-like block, and the house etc. is placed on the board-like ship, so the effect of preventing subsidence can be enhanced.

[Brief description of drawings]

 The figure is a cross-sectional view showing a basic construction method for construction according to the present invention. 1 ... Land, 2 ... Board block 3 ... Foundation concrete

Claims (1)

[Claims] 1. A recess is formed by digging a range of 100 to 500 mm, which is the same as or slightly wider than the outer shape of a house or the like, on the surface portion of the land where a house or the like is to be constructed, and further A basic construction method for construction, characterized in that the block-like block is formed by driving closed-cell concrete with a specific gravity of about 0.3 to 1.2 into the hollow, and this is used as the foundation of a house.