JPH01163331A - Concrete block burying structure - Google Patents

Abstract

PURPOSE: To prevent a concrete block from overturning by laying a foaming polystyrene body having a drain hole under the concrete block, and as necessary, by forming a mortar layer or a sand layer. CONSTITUTION: When a concrete block 1 such as a side ditch block is buried in ground, a foaming styrol body 2, which has a substantially U-shape with an upper opening corresponding to the shape of the side ditch block and has many drain holes 5 in its sidewalls 3, 3' and its bottom plate 4, is placed under the block 1. A mortar layer or a crusher-run layer 7 is placed between the block 1 and the foaming styrol body 2, and a sand layer or a crusher-run layer 8 is placed on the lower surface of the foaming styrol body 2 for application. Thus, water gushing-out and collecting under the block 1 is divided to the right and the left of the block 1 and drained to enable prevention of overturning of the block 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a concrete block buried structure such as a gutter block.

(b) Conventional technology Conventionally, when burying concrete blocks such as gutter blocks, curbstone blocks, retaining wall blocks, etc. in the soil, there is a risk that the concrete blocks will sink in soft ground such as rice fields. A gap was created at the opening, and there was a risk that groundwater could gush out from the gap.

In order to eliminate such drawbacks, the present inventor has developed a structure that prevents concrete flock from sinking even on soft ground.
He invented a buried structure that uses styrofoam plates and lays them below concrete blocks, and by combining them with a mortar layer and a sand layer, ensures concrete block construction in soft ground, and has applied for a patent. ing.

(c) Problems to be Solved by the Invention However, although the structure in which a polystyrene foam plate is laid below the concrete blocks certainly contributes to preventing subsidence on soft ground, the present inventor has further identified its advantages. I thought about improving the. In other words, if a Styrofoam plate is placed below a concrete block, and the soil is considered a fluid, if the total specific gravity of the concrete block and the specific gravity of the Styrofoam plate is equal to the specific gravity of the soil, the concrete block will be placed under the soil. It is stable inside, but if water accumulates below due to underground water gushing, etc., the specific gravity of the water, which is smaller than the specific gravity of the soil, will be added to the total specific gravity of the concrete block and Styrofoam board. As a result, the specific gravity of the soil becomes greater than the total specific gravity of the concrete block, expanded polystyrene, and water, which worsens the stability of the concrete block in the soil and may cause the concrete block to tilt.

Therefore, in order to eliminate this tilting phenomenon, as shown in FIG.
) is water-permeable, and a water-permeable Styrofoam body (d) is placed below the Styrofoam body (C) on the outer bottom of the concrete block to prevent water from accumulating below the concrete block. It is conceivable that the water below the block be distributed to both sides of the block via water-permeable Styrofoam and drained.

However, with such a structure, the construction of the foamed polystyrene located on the outer surface and bottom surface of the concrete block is complicated, and it has the disadvantage that it is not possible to lay it closely to the concrete block because it meanders, and it is not economical. Moreover, water permeable foamed polystyrene below the concrete blocks may not be able to properly distribute the water between the left and right sides.

(d) Means for Solving the Problems The present invention consists of laying an integrally molded polystyrene foam body of a predetermined shape with a drain hole drilled in at least a portion located below the bottom of the block under a concrete block;
To provide a concrete block buried structure configured to form a mortar layer or a crusher run layer between the concrete block and the foamed polystyrene body, and a sand layer or a crusher run layer below the foamed polystyrene body, as required.

(E) Function/Effect In this invention, when burying a concrete block in the soil, an integrally molded Styrofoam body of a predetermined shape is laid in a burying groove, a concrete lead block is placed on top of it, and the concrete block is buried. The shape of the Styrofoam body may be a flat plate, or it may surround the lower left and right sides of the concrete block, or it may cover the outer surface and bottom of both side walls of the concrete block. , the required number of drain holes are drilled, and therefore, the water that accumulates below the concrete block is absorbed through the drain holes by capillary action, and penetrates into the gap between the contact area between the concrete block and the Styrofoam body. The water is then drained to both sides of the block.In short, the water that gushes out and is stored below the concrete block is distributed to the left and right sides of the block, thereby preventing the concrete block from tipping over.

In addition, if necessary, mortar layer, crusher run layer,
By laminating a layer of sand or the like in the vertical direction of the Styrofoam body, dimensional errors in construction can be eliminated and lateral displacement can also be prevented.

(F) Embodiment The embodiment of the present invention will be explained in detail based on the drawings. As the concrete block (1), a gutter block, a curb block, an L-shaped retaining wall block, a box culvert block, etc. can be used. In addition, you can also use concrete blocks.

This example shows an example in which a gutter block is used as the concrete block (1), and a polystyrene foam body (2) formed into a predetermined shape by integral molding is laid below the block (1).

As shown in Fig. 1, the shape of the Styrofoam body (2) is approximately U with an upper opening that matches the shape of the gutter block.
There are those that are shaped like a letter, those that have projecting edges on the left and right as shown in Figure 3, and those that are flat as shown in Figure 5.

The Styrofoam body (2) shown in Fig. 1 has left and right side walls (
3) It is formed by (3') and a bottom plate (4), and is configured in a shape that blends in with the outer surface of the concrete block (1), and the side walls (3) (3') and the bottom plate (4). A large number of drain holes (5) are bored in the.

In addition, the styrofoam body (2) shown in Fig. 3 has a bottom plate (
It has a structure in which ridges (6) (6°) are set up on both sides of 4), and the ridges (6) (6') cover the lower corners of the concrete prong (1). and the bottom plate (4)
A drain hole (5) is bored near the center.

The foamed polystyrene body (2) shown in FIG. 5 has a simple flat plate shape, and drain holes (5) are arranged in a row in the center.

In addition, in any shape of the Styrofoam body (2), the concrete block (1) and the Styrofoam body (
2), a mortar layer or a crusher run layer (7) is laid down as shown in Figures 1, 3, and 5, and a sand layer or a crusher run layer is laid on the lower surface of the polystyrene foam body (2). (8) will be installed.

Further, the styrofoam bodies (2) are connected to each other using a connecting tool to prevent the styrofoam bodies (2) from meandering and falling apart on their own.

Here, each Styrofoam body (2
) to explain the action of the Styrofoam body (2) in Figure 1.
) is constructed so that the total specific gravity of the concrete block (1) and the foamed polystyrene body (2) is lighter than the specific gravity of the mud, to improve the stability of the concrete block (1),
Moreover, the drain hole (5) of the bottom plate (4) constantly sucks up water from below the foundation, and the sucked water is absorbed into the mortar layer (7).
) and the Styrofoam body (2), and the water is drained laterally from the drain holes (5) in the left and right side walls (303').

The foamed polystyrene body (2) shown in Fig. 3 is mainly used on soft ground where the vibrations of the car are transmitted to the human body when the car passes through the road with soft ground. It will be used for the ground.

Moreover, the ridge (6H6°) prevents the concrete block (1) from shifting due to vibrations of the car, and the drain hole (5) provided near the center of the bottom plate (4) sucks up water from below. Then, remove the ridge (6) from between the mortar layer (7) and the mortar layer (7).
) (6°) to drain water to the left and right sides.

In addition, the Styrofoam body (2) shown in Figure 5 is used for soft sandy soil, and the spring water below is drained through drain holes (5) drilled in a row in the center of the bottom plate (4). Water is sucked up from the concrete block (1) and drained from the upper surface of both ends thereof, and such rows of drain holes (5) can sufficiently prevent the concrete block (1) from falling over.

As mentioned above, the Styrofoam body shown in Figures 1 to 6 (
Regarding the shape of 2), various shapes are used depending on the quality of the soil to be buried.

FIG. 7 shows how a flat polystyrene foam body (2) is used when a concrete block (1) is used as a curbstone.

[Brief explanation of the drawing]

FIG. 1 is a front view of the structure of the present invention. FIG. 2 is a perspective view of the same. FIG. 3 is a front view of another embodiment. FIG. 4 is a perspective view of the same. FIG. 5 is a front view of another embodiment. FIG. 6 is a front view of another embodiment. Figure 7 is an explanatory diagram when used as a curbstone. FIG. 8 is an explanatory diagram showing a conventional structure. (1): Concrete block (2) Double styrofoam body (3) (3’): Side wall (4): Bottom plate (5): Drain hole (6) (6’): Edge (7) Two mortar layers (8): Sand layer − of law law Figure 7

Claims (1)

[Claims] 1) Below the concrete block (1), a polystyrene foam body (2
), and if necessary, lay concrete blocks (1
) and the styrofoam body (2), a mortar layer or crusher run layer (7) is placed between the styrofoam body (2) and the styrofoam body (2).
A concrete block buried structure configured to form a sand layer or crusher run layer (8) below.