JPS6015774B2 - like wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wall constructed by stacking large concrete blocks to protect against mud crabs.

Traditionally, earth crabs have been built with stone walls, small concrete blocks, and unreinforced or reinforced concrete walls. However, stone walls and concrete block masonry require a lot of manpower and are not strong enough, unreinforced concrete walls require large cross sections, and reinforced concrete walls require large sections using large-sized reinforcing bars. In addition to requiring extensive on-site work, it is extremely bland. The purpose of this invention is to realize a wall that can be constructed efficiently by using special large-sized reinforced concrete blocks, and can also be equipped with a planting bed if necessary. Next, the present invention will be explained by referring to the illustrated embodiments.

In FIGS. 1 to 3, the lowest block 1 is the first
As shown in the figure, a plate-shaped main wall 2, a top plate 3 and a bottom plate 4 located above and below the plate-shaped main wall 2 at almost right angles thereto, a key portion 5 projecting downward from the front green of the bottom plate 4, and a key portion 5 of the bottom plate 4. It consists of a pressure-receiving plate 6 that stands up almost parallel to the crown 2 from the rear green, and these are integrally formed of reinforced concrete.

The main wall 2 has drainage holes 7, 7 and water supply holes 8,
8 is bored, and a protrusion 9 is protruded from the top part 3 at a position above the royal wall 2. In front of the protrusion 9, there are drain holes 10, 10, and at the rear, drain holes 11, 11 and irrigation holes are provided at appropriate positions, respectively. hole 12,1
2, working windows 13, 13, 13, and bolt holes 14, 14 are bored. The middle or top block 21 is
As shown in FIG. 2, a plate-shaped main wall 22, a side plate 23 and a bottom plate 24 that are located above and below the plate-shaped main wall 22, and are substantially perpendicular to the plate-shaped main wall 22.
It consists of a pressure receiving plate 26 that stands up from the rear green of the bottom plate 24 almost parallel to the main wall 22, and like the lowermost block 1, these are integrally formed with reinforced concrete. The main wall 22 has drain holes 27, 27 and irrigation holes 2 at appropriate locations.
8 and 28 are bored, a projection 29 is provided on the top plate 23 to protrude above the main wall 22, and drain holes 30 and 3 are provided in front of the projection 29.
0 are drilled, and drain holes 31, 31, irrigation holes 32, 32, and working windows 33, 33 are provided at appropriate locations behind the protrusion 23, respectively.
33 and bolt holes 34, 34 are bored. Further, a recess 35 is formed directly under the main wall 22 of the bottom plate 24, and drain holes 36, 36 are bored in front of the recess 35.
There are drain holes 37, 37 and irrigation holes 38, 38 in the appropriate places behind the
, working windows 39, 39, 39 and bolt holes 40, 40 are bored. For construction, a groove 42 of sufficient width is excavated in the ground 41 directly below the slope surface, rubble 43 and chestnut stone 44 are laid down, and the lowest block 1 is laid on top of it using a crane.

At this time, the rear end of the bottom plate 4 and the lower end of the key part 5 are placed at approximately the same height, so that the main wall 2 is appropriately tilted back. Bottom plate 4
Chestnut stone or crushed stone (hereinafter abbreviated as mulberry stone etc.) 45, 46 is filled in the recess formed by the lower surface of the key part 5 and the space in front of the key part 5 and the space behind the pressure receiving plate 6. Further, a pocket-shaped space in front of the pressure receiving plate 6 and above the bottom plate 4 is filled with concrete or soil cement 47.
Next, chestnut stone or the like 48 is filled along the back side of the main wall 2 and the top plate 3, and furthermore, ± sand is filled behind it. The work window 13 is
This is to make it easier to load millet etc. 48. When the hemming of the lower block is completed, the block 21 for the middle or top level is stacked on top of it using a crane.

At this time, the recess 35 of the block 21 is located in the lowermost block 1.
The drain holes 36 and 37, the groove water hole 38, the working window 39, the bolt hole 40, etc., which are engaged with the protrusion 9 and bored in the bottom plate 24, are as follows.
These correspond to drain holes 10 and 11, irrigation holes 12, working windows 13, and bolt holes 14, which are drilled in the top plate 3 of the bottom block, respectively. Therefore, both blocks 1 and 21 are connected by bolts passing through bolt holes 14 and 40, and working windows 13 and 39 are closed with concrete 49, and a pocket-like space above the bottom plate 24 is filled with concrete or Fill with soil cement 50. Next, pressure receiving plate 2
6 and the back side of the king wall 22, chestnut stone, etc. 51 is filled, and the back of it is filled with earth and sand. If necessary, blocks of the same shape are further stacked above the block 21 and the same operation is performed.

Finally, the unnecessary drain hole 30 in the top plate 23 of the top block
31, the work window 33, bolt hole 34, etc. are closed with mortar or concrete 52, and concrete 53, 54 is poured on the top surface of the top plate 23 and the ground surface, respectively, to form an upper drainage channel 55, and the ground 41 below the slope surface is poured. A drainage ditch 55 is installed in the area, and the work is tentatively completed. If you want to carry out greening, insert steel columns 57, 57, etc. into holes 56, 56, etc., which are previously provided on the front upper surface of the bottom plates 4, 24 of each block.
... is stood in the tank, horizontal bars 58, 58... are passed over it to create a fence, and synthetic resin boards, etc. are supported on the inside of the fence to remove soil 59.
, 59 are filled to form tree beds 60, 60', and trees 61, 61' are planted there.

Then, the drain pipe 62 is connected to the block 21 from the upper drainage channel 55.
and each main wall 2 by passing through the key water holes 32, 38, 12, etc. of 1.
2 and 2, and its tip is opened into the planting bed 60 through the groove water hole 8, and the irrigation pipe 62' is passed through the water guide hole 32 of the block 21 and extends along the back surface of the main wall 22. , the tip is opened into the planting bed 60' through the irrigation hole 28. Thereby, when water is poured into the upper drainage channel 55, all the tree beds can be irrigated through the water supply pipes 62 and 62'. In addition, the lower water drain holes 7, 27 of each main wall 2, 22 allow water flowing out from the drain holes 59, 59
Drainage pipes 63, 63 are installed to allow drainage to the outside of the soil 69, 59 so as not to scour the soil. As described above, on the wall, in addition to the weight from above, the block 1 is subjected to a force that tries to push it forward.

On the other hand, in block 1, the lower surface of the bottom plate 4 is upwardly inclined, and the key part 5 digs into the soil to increase slip resistance, so that the block is pushed forward by the tonosho. It prevents the In addition, since the front of the pressure receiving plate 6 is filled with concrete 47 and on top of it the agate stone 48, the center of gravity is located at the rear due to the fact that the main wall 2 is located at the rear. The tonosho acting on the upper part of the block 1 can prevent the block 1 from falling forward. Note that an upward bending moment is generated on the front bottom plate that includes the key part 5 due to the reaction force due to the resultant force of the pressure and the own weight of the feet. This reduces the load on the front bottom plate of block 1. The bottom plate 24 of the flock 21 is supported on the top plate 3 of the block 1 in a forward upward position, and its recess is engaged with the protrusion 9 of the block 1, so that it is prevented from sliding forward due to pressure from behind. I can do it.

Similarly to the block 1, the center of gravity of the block 21 is located at the rear, and the bolt connection between the top plate 3 and the bottom plate 24 prevents the block 21 from sliding forward and overturning. There is. At the rear end of the top plate 3 of the block 1, the weight of the block 21 and the hollyhock stone 51 behind it, and the mechanical pressure behind it are applied as a resultant force diagonally forward.

Of these, the component force perpendicular to the top plate 3 acts on the king wall 2 as a backward bending moment, and the component force parallel to the top plate 3 acts on the main wall 2 as a forward bending moment. Therefore, the two bending moments on the main wall 2 cancel each other out and become small values. FIG. 4 is a diagram illustrating the forces applied to the blocks 1 and 21.

Tonosho of sizes as shown by 66 and 67 appear on the virtual back surfaces 64 and 65, respectively. Among them, the ones indicated by arrows are a strong blocky part in which the bottom plate 4 of the block, the pressure receiving plate 6, and the cement 47 are integrated, and the top part 3 of the block 1, the bottom plate 24 of the block 21, the pressure receiving plate 26, and the cement. 50 acts directly on the integrated strong blocky part. The remaining forces are then applied to the main walls 2, 22 of the blocks and 21 in magnitudes as shown by curves 68 and 69, respectively. As is clear from this explanation, the pressure receiving plates 6, 26 of the blocks 1 and 21 directly receive the powerful tonosho, and prevent this from being applied as a bending moment to the lower part of the king wall 2, 21. , and the force applied to the intermediate portion of the main walls 2, 21 is significantly reduced.

Therefore, the bending moment applied to each block is reduced overall, allowing the main walls 2, 22 to be thinner and the amount of reinforcing reinforcing bars to be reduced. In FIG. 5, a pressure receiving plate 70 is suspended from the rear edge of the top plate 3 in the lowermost block 1 as shown in the first figure.By providing this, the earth pressure acting directly on the upper part of the royal wall 2 is reduced. Can be removed.

As a result, not only the bending moment acting on the vicinity of the center of the main wall 2 but also the bending moment acting on the joint portion between the main wall 2 and the bottom plate 4 can be further reduced. In addition,
Reference numeral 71 is a work window that facilitates filling of chestnut stone, etc., and there is no need to block it with concrete or the like after work. In FIG. 6, the main wall 22 of the upper and middle blocks 21 shown in FIG. 2 is made to stand obliquely forward from the bottom plate 24 instead of being bent forward from the middle.

Its action is not much different from that shown in the second figure. As described above, according to the present invention, the surfaces 64 and 65 connecting the back green of the top plate and the bottom plate of each block can be seen as the virtual back surface,
The front part is thicker and heavier so it acts as a wall structure.

The component force of the weight of this structure, which blocks the back of the structure, very effectively cancels out the earth pressure that appears on the virtual rear surface. Furthermore, the weight of each block is transmitted to the lower block by a waist board that is approximately perpendicular to the crown wall, and in the lower block, the weight of the upper block received by the top board is also transmitted to the king wall that is approximately perpendicular to the top board. In this way, the bottom plate of the block located above and the top plate of the block located below are integrated, which greatly contributes to reducing the impact from behind, and also reduces the weight of millet, etc. and earth and sand placed on top of it. In addition to increasing the overall weight of the wall, millet stones and the like ensure drainage, and as a result, the stability of such a wall is increased. Therefore, even if you make a block of fairly large size, it is lightweight and inexpensive because the amount of reinforcing bars and concrete is small, and it is easy to transport and work on site using a crane. This can be easily realized, and if necessary, a planting bed can be installed to improve the appearance.

[Brief explanation of drawings]

FIG. 1 is a front view, central vertical sectional view, and plan view of the lowest block used in the embodiment of the present invention, and FIG. 2 is a front view, central vertical sectional view, and plan view of the middle or top block used in the embodiment. Figure 3 is a vertical cross-sectional view of the above embodiment, Figure 4 is an explanatory diagram of stress in the same example, Figure 5 is a central vertical cross-sectional view showing a different example of the bottom block, and Figure 6 is the middle block. Alternatively, it is a central longitudinal sectional view showing a different example of the uppermost block. 1... Bottom block, 2... Main wall, 3.
...Top plate, 4...Bottom plate, 5...
key part, 6...pressure plate, 9...protrusion,
21... Upper block, 22... Main wall, 23...
...Top plate, 24...Bottom plate, 26...
...Pressure plate, 35... recess. Figure 1 Figure 2 Figure 5 Figure 6 Figure 3 Figure 4

Claims (1)

[Claims] 1. A plate-shaped main wall with drainage holes drilled in appropriate places, and a top plate and a bottom plate connected above and below it so that the cross section forms an I-shape,
The wall is made up of a plurality of blocks integrally made of reinforced concrete stacked together and a layer of chestnut stone or crushed stone is formed behind the blocks, and the top plate and bottom plate of each block are connected to the main wall at approximately right angles. A pressure receiving plate stands up from the rear edge of the bottom plate approximately parallel to the main wall, a key portion protrudes downward from the front edge of the bottom plate of the bottom block, and a pressure receiving plate stands up from the rear edge of the bottom plate, and a key portion projects downward from the front edge of the bottom plate of the bottom block. The wall is characterized in that the top plate of the upper block and the bottom plate of the upper block are respectively formed with protrusions and recesses that engage with each other.