JPH03144017A - Holding structure for embedded concrete block - Google Patents

Abstract

PURPOSE:To prevent a concrete block from sinking or floating up, so as to stabilize the block by laying a foamed styrene plate below the concrete block, and by extending block sinkage preventing piles having a flange part, in the lower part of the foamed styrene plate while connecting the upper part thereof. CONSTITUTION:A foamed styrene plate 2 is embedded in a weak foundation G, and then a concrete block 1 is laid thereover through the intermediary of a mortar layer and a sand layer 3. Further, a plurality of drain holes 4, 5 are formed in the foamed styrene plate 2, and piles 6 are suspended from the lower part thereof and are connected by engaging plates 8. Then, a plurality of flange parts 9 are projected from the peripheral surface of each of pipes 7 so as to increase the frictional resistance between the piles 6 and the weak foundation G. Further, with this resistance, it is possible to prevent the concrete block 1 from sinking and floating up. Thereby it is possible to discharge gushing underground water, upward through the pipes 7, and to stabilize the concrete block 1 with the use of the buyoancy of the foamed styrene plate 2.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a structure for holding buried concrete blocks in soft ground or the like.

(B) Conventional technology Conventionally, when burying concrete blocks such as gutter blocks underground, in soft ground such as fields, underground water gushes out, causing the buried concrete blocks to shift laterally or downward. There was a risk of subsidence.

Therefore, as a construction method to eliminate the above-mentioned drawbacks, Styrofoam is temporarily laid under concrete blocks buried in soft ground, and this is combined with a mortar layer and a sand layer to ensure construction on soft ground.

(c) Problems to be Solved by the Invention However, the above construction method had the following drawbacks.

In other words, when construction is carried out on soft ground, blocks are buried with the top surface aligned with the ground surface, and on the same block,
When a car passed by and the load was applied to the block, the block and the Styrofoam board that had been installed on it were sinking.

In addition, to prevent the blocks from sinking, the styrofoam plates were thickened to increase their buoyancy, but as spring water from underground increased, the styrofoam plates rose to the surface.
It was not possible to stably hold the concrete block by lifting the block upward.

An object of the present invention is to provide a holding structure for buried concrete blocks that can solve the above problems.

(d) Means for solving the problem In the present invention, below the buried concrete block,
A structure for holding a buried concrete block formed by laying a Styrofoam plate for holding the block, characterized in that the upper end of a pile for preventing block subsidence extending downward is connected to the lower part of the Styrofoam plate. It provides a holding structure.

Moreover, the above-mentioned block sinking preventive resistor is characterized in that it has a flange provided on its peripheral surface.

(E) Functions and Effects In the present invention, when burying concrete blocks in soft ground, a polystyrene foam plate is laid below the blocks, so even if groundwater gushes out in the same ground,
Buoyancy is generated in the Styrofoam board, which allows the Styrofoam board to hold and stabilize the block.

Furthermore, when laying Styrofoam boards, we drive into the ground a barrier connected to the bottom of the board to prevent block subsidence, so if a car passes over the buried concrete blocks and a load is applied, the Styrofoam boards will be damaged. The block sinking preventive resistor connected to the bottom creates frictional resistance between the resistor and the soft ground, and by holding the Styrofoam board in that state, it is possible to prevent the block from sinking as much as possible. .

In addition, the block sinking preventive resistor can generate frictional resistance with the soft ground due to the flange provided on its peripheral surface.

Furthermore, in the present invention, when the amount of underground water that gushes out increases, buoyancy occurs in the polystyrene foam board, but the frictional resistance between the piles and the soft ground can also prevent the block from floating.

(F) Example An example of the present invention will be described in detail based on the drawings. In the side view of FIG. 1, l indicates a concrete block according to the present invention, 2 indicates a foamed polystyrene board, and 3 indicates a mortar layer, a sand layer, etc. There is.

In this embodiment, as shown in FIG.
A mortar layer and a sand layer 3 are interposed between the styrofoam plate 2 and the styrofoam plate 2.

Furthermore, due to the construction method of the concrete block 1, since the polystyrene foam board 2 is laid under the block 1 on the soft ground G, buoyancy will be generated in the polystyrene foam board 2 even if groundwater gushes out. This is to stabilize the block l.

Furthermore, in this embodiment, the foamed polystyrene board 2 is provided with a plurality of vertical drain holes 4, and the capillary action of the drain holes 4 is used to drain the gushing groundwater upwards, thereby forming the concrete block 1. I try to keep it in a stable state.

In addition, the foamed polystyrene board 2 is provided with drain holes 5 in the left and right direction as shown in FIG. It is prevented.

In the present invention, in the foamed polystyrene temporary 2 having such a structure, a block sinking prevention block 6 is vertically installed at the bottom thereof,
The concrete block 1 is prevented from sinking and rising by the resistor 6, and its structure will be explained in detail below.

That is, as shown in FIG. 3, the block settlement prevention pile 6 is attached to the upper end of a cylindrical pipe 7 having a certain length.
The engagement plate 8 is connected to the styrofoam plate 2.

Then, the vibrator 7 is inserted into the drain hole 5 provided in the Styrofoam board 2, and the engagement plate 8 is engaged with the upper surface 2-1 of the Styrofoam temporary 2, so that it extends downward to the lower part of the Styrofoam board 2. The upper ends of the block sinking prevention resistors 6 are connected.

Furthermore, as shown in FIG. 3, this pipe 7 has a plurality of flanges 9 protruding from its circumferential surface, and the flanges 9 increase the frictional resistance between the support column 6 and the soft ground G. ing.

The collar portion 9 is formed in an annular shape and is attached to the outer peripheral surface of the pipe 7 at regular intervals.

With this configuration, the temporary Styrofoam 2 is laid below the concrete block 1 on the soft ground G, and further,
A plurality of block settlement prevention piles 6 connected to the same plate 2 are driven into the soft ground G, and frictional resistance is generated between the flange 9 of the pile 6 and the soft ground G, and this resistance causes the concrete block 1 to sink and Prevents floating.

Furthermore, in this embodiment, since the pipe 7 is used,
The gushing groundwater is transferred through the capillary action of the same pipe 7.
Suction is sucked up through the lower end opening 7a, and then the upper end opening 7b.
Groundwater is drained upward through the mortar layer and sand 3.

Further, in this embodiment, the foamed polystyrene plate 2 is formed into a thick wall shape, thereby increasing the buoyancy and preventing the concrete block 1 from sinking as much as possible.

Note that FIGS. 4 to 6 show other embodiments showing the shape of the flange 9 provided on the block sinking preventive shaft 6.

FIG. 4 shows a pipe 7 of a block sinking preventive shaft 6 with a flange 9 having a square cross section attached thereto.

Further, FIG. 5 shows a pipe 7 of a block sinking preventive shaft 6 with a flange 9 having a triangular cross section attached thereto.

Furthermore, FIG. 6 shows a pipe 7 of a block sinking preventive shaft 6 with a flange 9 having an elliptical cross section attached thereto.

As described above, the embodiments of the present invention have the following effects.

In the present invention, when burying the concrete block 1 in soft ground G, the Styrofoam board 2 is laid below the block 1, so even if groundwater gushes out in the same ground lc, the Styrofoam board 2 A buoyant force is generated, and the block 1 can be held and stabilized by the styrene plate 2.

Furthermore, when laying the Styrofoam board 2, a block sinking prevention resistor 6 connected to the bottom of the board 2 is driven into the ground G, and if a car passes over the buried concrete block 1 and a load is applied. , Styrofoam board 2
Frictional resistance is generated between the lashings 9 and the soft ground G by the flange 9 of the block sinking preventive resistor 6 at the bottom of the block, and by holding the polystyrene foam plate 2 in that state, the block l is prevented from sinking. It can be prevented as much as possible.

Moreover, the block subsidence prevention resistor 6 can generate frictional resistance with the soft ground G by the flange 9 provided on its peripheral surface.

In addition, in the present invention, when the groundwater that gushes out increases, buoyancy occurs in the Styrofoam temporary 2, but the support 6 and the soft ground G
It is also possible to prevent the block l from floating due to the frictional resistance between the block l and the block l.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the structure of the concrete block according to the present invention, Fig. 2 is a perspective view of the concrete block, Fig. 3 is a side view showing the structure of the block sinking preventive shaft, Fig. 4 is
6 to 6 are explanatory diagrams showing other embodiments of the same resistor. In the diagram, 1: Concrete block 2: Styrofoam board 6: Block for preventing block settlement 9: R part G: Soft ground

Claims (1)

[Claims] 1. In a buried concrete block holding structure in which a Styrofoam board (2) for holding the block (1) is laid below the buried concrete block (1), the Styrofoam board (2) A structure for holding a buried concrete block, characterized in that the upper end of a pile (6) for preventing block subsidence extending downward is connected to the lower part. 2. The structure for holding a buried concrete block according to claim 1, wherein the block sinking prevention pile (6) is a pile having a flange (9) on its peripheral surface.