JPH02186018A - Building method for retaining wall and foundation block thereof - Google Patents

Abstract

PURPOSE:To shorten work time and attain lavor saving by forming a groove in proximity of a slope, providing foundation concrete and stacked block base- stone in the groove in one body, and placing concrete in the gap if necessary. CONSTITUTION:A groove 13 is digged on flat ground 11 along the neighboring part of a slope 12, and crushed stones 14 are laid and pressed. Nextly, the face 32 and 33 are connected through a wave shell 34, and a foundation block 31 for a retaining wall is formed out of a frame-like foundation part 36 having voids 35, and a base-stone part 37 connecting reversed home base like plate bodies in the lateral direction. Nextly, the foundation block 31 is provided in the groove 13, and fixed itself by charging drilled earth 18 or back-filling material 21 or the like between the groove 13 and the foundation block 31. Ready-mixed concrete is placed and solidified into the voids 35 of the foundation block 31. Consequently, the foundation blocks 31 are mutually combined and connectivity of foundation can be held.

Description

DETAILED DESCRIPTION OF THE INVENTION "Molecule F for industrial use" The present invention relates to a method for forming a retaining wall to protect, for example, a cliff along a road, and a retaining wall foundation block used in this method.

``Conventional Technology'' For example, retaining walls are formed on cliffs along roads to hold back the earth. These retaining walls are formed by digging a trench in a flat area adjacent to @4ITIi, providing a foundation, and sequentially stacking tri-blocks on top of this foundation to cover the slope.

FIG. 7 shows a conventional method of forming a retaining wall. This method will be explained step by step as follows.

■Measure various dimensions such as the width and length of the foundation, as well as the angle and height of the slope (so-called planning).

■As shown in Fig. 7 fa), dig a hole 13 along the part of the flat land 11 adjacent to the slope 12.

■As shown in the same figure (bl), there are 14 crushed stones inside the 13
is spread and pressed using a pressing means 15 such as a rolling press.

■As shown in Figure 1cl, a formwork 16 made of wood or metal is installed inside the mold 13, and ready-mixed concrete I7 is cast inside the formwork 16.

■As shown in fd+ in the same figure, the ready-mixed concrete 17 is cured for about 2 to 3 days until it solidifies.

■As shown in the same figure (e), after the fresh concrete 17 has solidified, the formwork 16 is pulled out from the concrete 13.

■As shown in the same figure (fl), excavated soil 18 or backfill material 21 is placed in the gap formed by extracting the formwork 16.
Fill and backfill.

■As shown in fg) of the same figure, a stacked block root stone 20 is installed on top of the foundation concrete 17°. At this time, a backfilling material 21 such as crushed stone is inserted on the slope 12 side.

■As shown in Figure fhl, ready-mixed concrete 22 is placed in the gap between the block stacking stones 20 and the backing material 21.

[Phase] As shown in the same figure (i), stacked block base stone 20
Stack the stacking blocks 23 on top of it. At this time, the backing material 21 is inserted on the slope 12 side in the same manner as described above.

■As shown in Figure 1jl, ready-mixed concrete 22 is placed in the gap between the stacking blocks 23 and the backing material 21.

Thereafter, the stacked blocks 23 are sequentially stacked upward on the slope 12 by repeating the above steps [phase] and (2), and the slope 12 is covered with the stacked blocks 23 to a predetermined height to form a retaining wall.

FIG. 8 and FIG. 9 show an example of how to stack the block stacking stones 20 and the stacking blocks 23. In addition,
Hereinafter, the stacked block root stones will be simply referred to as root stones.

The example shown in FIG. 8 is a so-called stacking method, in which the root stones 20 and the stacking blocks 23 are both rectangular when viewed from the front, and the root stones 20 or the stacking blocks 23
An upper stacking block 23 is installed so as to span the stone grain.

The example shown in FIG. 9 is a so-called volumetric stacking method, in which the five-base stones 20 are basically shaped like a home base, and the stacking blocks 23 are basically rectangular. However, the edges of the retaining wall have a triangular shape or other shape that fits each location. Each stacked block 23 is arranged diagonally so that one corner fits into a V-shaped groove formed at the joint of the lower root stone 20 or the stacked blocks 23.

"Problems to be Solved by the Invention" In the conventional retaining wall forming method described above, a formwork 16 made of wood or metal is installed inside the retaining wall, and ready-mixed concrete 17 is poured into the formwork 16. After the fresh concrete 17 has solidified, the formwork 16 is pulled out and the excavated soil 1 is poured into the gap.
I am trying to backfill 8. Therefore, it is necessary to transport and assemble the formwork 16, and to clean and put away the frame material.

In addition, since the foundation stones 20 are installed on top of the formed foundation concrete 1-17' and hardened with ready-mixed concrete 22, the blocks 23 are piled up, so the work of installing the foundation stones 20 is also necessary. Become.

As described above, in the conventional method of forming a retaining wall, various complicated operations are required before the stacking blocks 23 are stacked, and the required work time and labor are large. In the civil engineering industry, there was a desire to mechanize and simplify the work due to labor shortages and aging, and there was a desire to develop a technology to create retaining walls using a more simplified process.

Therefore, an object of the present invention is to provide a method for forming a retaining wall and a retaining wall foundation block that can simplify the steps from forming the foundation to installing root stones.

[Means for Solving the Problems] In order to achieve the above object, the method for forming a retaining wall according to the present invention involves digging a trench for burying the foundation in a part adjacent to a slope of a flat area, and then inserting foundation concrete and stacked block stones. a step of installing an integrated foundation block for a retaining wall in the groove; a step of placing a pile block on top of the base stone portion of the pile block of the retaining wall foundation block and lining it with concrete; and a step of placing the pile block on top of the pile block again. It is characterized by including a step of placing stacking blocks and lining with concrete, and a step of repeating this last step to stack the blocks to a predetermined height.

Furthermore, the retaining wall foundation block according to the present invention is characterized in that the foundation concrete of the retaining wall and the stacking block base stones are integrated.

In this case, the retaining wall foundation block may consist of a frame-shaped foundation with a vertically penetrating gap, and a root stone that stands diagonally from the top of the foundation. Preferred 6 "Function" In the present invention, after forming a groove adjacent to the slope, a foundation block for a retaining wall is installed in this groove, excavated soil or backfilling material is poured into the groove gap, and the above-mentioned operations are performed as necessary. Simply pouring concrete into the gaps in the retaining wall foundation blocks completes the process from forming the foundation to installing the root stones. That is, the transportation and assembly of the frame, the cleaning and tidying up of the frame materials, which were required in conventional work, are no longer necessary, and the process of installing root stones on the foundation and lining with concrete is also simplified. Therefore, the workability in forming the retaining wall can be significantly improved, and work time and labor can be saved. Further, by pouring concrete into the voids of the retaining wall foundation block, continuity of the foundation can also be maintained.

Moreover, since the retaining wall foundation block according to the present invention is formed by integrating the foundation concrete of the retaining wall and the root stone, the retaining wall can be formed with good workability by applying the above method.

Furthermore, in the case where the retaining wall foundation block consists of a foundation formed in a frame shape so as to have a vertically penetrating space, and a rootstone part erected diagonally from the top of this foundation, the above-mentioned The voids reduce the weight of the block as a whole, making it easier to transport and install the blocks, and the continuity of the foundation can be maintained by filling the voids with concrete.

"Embodiment" FIGS. 2 to 5 show an embodiment of the retaining wall foundation block according to the present invention. 2 is a plan view, FIG. 3 is a front view, FIG. 4 is a side view, and FIG. 5 is a cross-sectional view taken along line A--A in FIG. 3.

This retaining wall foundation block 31, like a normal block, has a pair of flat faces 32 and 33 arranged substantially parallel to each other at a predetermined interval, and these faces 3
Partial wave shell 3 between 2.33
4 are connected. And front and rear faces 32.33
The wave shell 34 constitutes a frame-shaped base portion 36 having a void 35 passing through it vertically. In addition, in this embodiment, the wave shell 34 connects three parts of the face 32 and 33;
Two or four or more locations in 2.33 may be connected by wave shells 34. However, in order to reduce the weight of the entire block and make it easier to fill the concrete into the frame,
It is preferable to configure it into a frame shape so that a space 35 passing through it vertically is formed.

A root stone portion 37 is erected on the upper part of the foundation portion 36 so as to protrude diagonally rearward from the upper edge of the front face 32. The inclination angle of the root stone portion 37 is set in accordance with the angle of the slope on which the retaining wall is to be formed. The root stone part 37 is
It has a shape that looks like an upside-down home plate connected horizontally. However, a tapered groove 38 is provided at the connecting portion of each plate-like body, giving the appearance that individual plates are joined. Further, a tapered chamfered portion 39 is provided at the front corner of the outer periphery.

The wave shell 34 described above has each face 3
2 and 33 so as to spread out in a skirt shape when viewed from above, and also connected to the back side of the root stone portion 37 so as to spread out in a skirt shape when seen from the side.

In this embodiment, since the block is for volume as shown in FIG. If the block is to be made into a block for use, it may be formed into a shape in which rectangular plate bodies are connected (that is, an elongated plate body).

In addition, at the end of the retaining wall, the endmost root stone 37
It is necessary for the shape to fit the location, such as a trapezoid.

Furthermore, in this embodiment, six plate-shaped bodies resembling an upside-down home base are arranged horizontally in the root stone portion 37;
The number of plate-like bodies arranged may be appropriately set depending on the desired length of the block.

FIG. 1 shows a retaining wall forming method of the present invention using the retaining wall foundation block 31 described above. This method will be explained step by step as follows.

■Measure various dimensions such as the width and length of the trench used to build the foundation, as well as the angle and height of the slope (so-called "remaining method").

■As shown in Fig. 1 fa), dig a hole 13 along the part of the flat land 11 adjacent to the slope 12.

■As shown in fbl of the same figure, crushed stone 14 is placed inside the groove 13.
is laid down and pressed with a suppressing means 15 such as a rolling press.

The process up to this point is no different from the conventional method.

■As shown in the same figure, foundation blocks 3I for the retaining wall are installed inside Man 13 according to the way they are left.

■As shown in the same figure fdl, retaining wall foundation block 31
Excavated soil 18, backfilling material 21, etc. are put in between and 13 to backfill, and the retaining wall foundation block 31 is fixed. moreover,
Ready-mixed concrete 41 is placed in the void 35 (see FIG. 2) of the retaining wall foundation block 31, and is allowed to cure and harden for about 2 to 3 days. Adjacent retaining wall foundation blocks 31 are connected to each other by fresh concrete, and the continuity of the foundation is maintained.

■As shown in the same figure, the stacking blocks 23 are stacked on the base stone portion 37 1. At this time, a backing material 2I made of crushed stone or the like is inserted on the slope 12 side.

■As shown in the same figure), the stacking blocks 23 and the slope 12
Ready-mixed concrete 22 is placed in the gap between.

Thereafter, by repeating the above steps ① and ②, the stacking blocks 23 are successively stacked upwards on the slope 12,
A retaining wall is formed by covering the slope 12 up to a predetermined height with stacked blocks 23.

FIG. 6 shows another embodiment of the retaining wall foundation block according to the present invention. The overall configuration is similar to that of the embodiment described above, so the same parts are given the same reference numerals and the explanation will be omitted.

This retaining wall foundation block 31 is suitable for forming a tJ-shape 51 for drainage adjacent to a foundation. That is, the U-shaped groove 51 is configured by connecting a block 52 having an angular cross-section to the front surface of the retaining wall foundation block 31, and the U-shaped groove 51 is formed by connecting a block 52 with a cross-sectional shape to the front face 3 of the retaining wall foundation block 31.
2 is U? It is one side wall of 51. [A neck root 53 is installed on the upper surface of the J-shaped groove 51, and the retaining wall foundation block 31 is arranged so that one side of this root 53 engages with the retaining wall foundation block 31. A stepped portion 40 having a notched cross section is provided at the upper corner portion on the nii surface side.

"Effects of the Invention" As explained above, according to the present invention, a retaining wall forming foundation block in which the foundation concrete and root stones of the retaining wall are integrated is used, so that the frame for forming the foundation in the conventional method is used. Transportation, assembly, cleaning of frame materials, and tidying up are required.
It also simplifies the process of installing root stones on top of the foundation and lining it with concrete. Therefore, the workability in forming the retaining wall can be significantly improved, and work time and labor can be saved.

4. Simple drawings! n-su;'! 2 4 parts 1ia), fhl, tel, fdl,
let, ffl are explanatory diagrams showing the embodiment of the retaining wall forming method according to the present invention according to the steps; Fig. 2 is a plan view showing an embodiment of the foundation block for forming a retaining wall according to the present invention;
The figure is a front view of the same block, the fourth figure is a right side view of the same block, FIG. 5 is a sectional view taken along the Δ-A line in FIG. A sectional view showing another embodiment of the block, FIG. 7 fa1. fbl, f
cl.

fdl, tel, ge1. fgl, fh
), fi), f, il are explanatory diagrams showing an example of a conventional retaining wall forming method according to the steps, FIG. 8 is a front view showing an example of how to stack blocks in a retaining wall, and FIG. It is a front view showing another example of how to stack blocks.

In the figure, 11 is a flat ground, 12 is a slope, 13 is a groove, 23 is a stack of blocks, and 22 is a ? L concrete, 31 is the retaining wall foundation block, 32, 33 is the face, 34 is the wave shell, 35 is the void, 36 is the foundation, 37 is the root stone, and the old one is fresh concrete.

No. figure No. figure No. figure 1υ No. Cause

Claims (3)

[Claims] (1) A step of digging a trench for burying the foundation in a part adjacent to the slope of the flat land, and installing in the trench a foundation block for a retaining wall, which is an integrated foundation concrete and foundation blocks, and said foundation block for a retaining wall. The process of placing a block on top of the base stone of the block and lining it with concrete, placing the block again on top of the block and lining it with concrete, and repeating this last process until a predetermined height is reached. A method for forming a retaining wall, comprising the step of piling up blocks. (2) A foundation block for a retaining wall, characterized in that the foundation concrete of the retaining wall and the foundation stones of the retaining wall are integrated. (3) The retaining wall foundation block according to claim 2, comprising a foundation portion formed in a frame shape so as to have a vertically penetrating space, and a root stone portion erected diagonally from the top of the foundation portion. .