JP2003286730A - Retaining wall structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of the conventional arts that rain water contained in soil leaks from a joined part of divided building frames into a retaining wall to make soil and sand in the retaining wall muddy water, which flows out from the joined part of on an exposed face side of the retaining wall in a retaining wall structure constructed by vertically and horizontally assembling a plurality of the divided building frames made of concrete moldings and filling an inside void with the soil and sand. <P>SOLUTION: The retaining wall 1 is constructed by vertically and horizontally assembling the plurality of the divided building frames 2, 2, etc., made of the concrete moldings with the voids 25 and 26 between front and rear vertical walls 21 and 22. The inside void S of the retaining wall 1 is filled with bagged fillers 3 made by filling impermeable bags 31 with fillers 33 containing granules. The fillers filled into the inside void S of the retaining wall 1 are prevented from becoming muddy water and do not flow out from the joined part T of the divided building frames by making a structure into which rainwater does not permeate from an opening of the bag. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall structure constructed on, for example, a side surface of a road or a side surface of a constructed land, and more specifically, a plurality of divided skeletons made of concrete molded products are assembled vertically and horizontally, and The present invention relates to a gravity-type retaining wall structure constructed by filling an internal void space with a filler containing a granular material such as earth and sand.

[0002]

2. Description of the Related Art For example, when forming a road on a mountain surface, a retaining wall is often constructed on the mountain surface and the upper surface of the retaining wall is used as a part of the road width. By the way, when this type of retaining wall is cast on site with concrete, it is necessary to assemble the formwork at the construction site, so the retaining wall construction work becomes complicated, and the construction period becomes long, and the amount of concrete increases, There is a problem that the retaining wall construction cost is high.

Further, in recent years, as a retaining wall when forming a road on a mountain surface, as shown in FIG. 10, each divided skeleton 2, 2, ... , There is an increasing number of examples of constructing the retaining wall 1 by stacking the set of divided frames 2, 2, ... Vertically as shown in FIGS. 11 and 12 and arranging them side by side for the required length. . That is, in the retaining wall construction example of FIGS. 11 and 12,
As shown in FIG. 10, the divided skeletons 2, 2 ... Of each shape obtained by vertically dividing the finally constructed retaining wall 1 into a plurality of pieces (four in the illustrated example) are concrete-molded in advance in a factory.

Each of the divided frames 2, 2 ...
A hollow hollow structure is used in which 1, 2 and 22 are integrally connected by two connecting walls 23 and 24. That is, in this divided frame 2,
An intermediate space 25 surrounded by the front and rear walls 21, 22 and the two connecting walls 23, 24 and end spaces 26, 26 respectively outside the connecting walls 23, 24 are formed.

In the retaining wall construction example shown in FIGS. 11 and 12,
As the retaining wall 1, the front surface (exposed side) 1c is a vertical surface and the rear surface (mountain surface side) 1d is an inverted trapezoidal shape. Is a vertical wall and the rear wall 22 is an inclined trapezoidal wall. The depth of the upper and lower divided frames 2, 2, ...

Then, each of the divided frames 2, 2
・ Assemble vertically and horizontally as shown in Fig. 11.
Are configured. In the retaining wall construction example of FIG. 11, the divided skeletons 2, 2, ... Are assembled in a zigzag manner, but the divided skeletons 2, 2, ..
It may be piled up in. Inside the retaining wall 1, there are formed cavities S, S, ... Penetrating up and down, and in each of the cavities S, S ..
1 (FIG. 12) is filled to form a gravity type retaining wall. The filling 11 may be simply referred to as earth and sand in the following description.

Further, as shown in FIG. 12, when a void S ₁ is formed between the rear surface 1d of the constructed retaining wall 1 and the mountain surface Y, the void S ₁ is also filled with earth and sand 12. It

When the upper surface of the retaining wall 1 is used as, for example, a road, an asphalt pavement 4 is provided across the upper surface of the retaining wall 1a and the upper surface of the earth and sand 12 filled in the void S ₁ , Road 1 with appropriate width (for example, 5 to 6 m width) on mountain surface Y
Form 0. In addition, when the retaining wall 1 is constructed in an inverted trapezoidal shape in this way, the depth thickness W ₁ of the retaining wall upper surface 1a can be increased,
Since the depth thickness W ₁ can be used as a part of the road width W ₀ , it is not necessary to excavate the mountain surface Y or the excavation width can be reduced.

In the retaining wall construction examples shown in FIGS. 10 to 12, the inverted trapezoidal divided frame 2 is used for forming roads. However, in the case of a retaining wall simply for retaining earth, it is used as a divided frame. Sometimes concrete walls with parallel walls are used. Even in that case, it is possible to function as a gravity-type retaining wall by filling the inner space of the constructed retaining wall with a filler such as earth and sand.

By the way, as shown in FIGS. 11 and 12, in the gravity type retaining wall 1 constructed by assembling a large number of divided frames 2, 2 ..., Each divided frame 2, 2 adjacent vertically and horizontally.
Since the end faces thereof are simply joined together, a minute gap is formed in each of the joined portions T, T.
Further, for example, when the ground at the portion where the retaining wall is installed sinks, or when the ground is distorted due to an earthquake or the like, the posture of some of the divided frames 2 changes, and the gap between the joints T, T ... Is partially large. May be. Since the gaps between the joints T, T, ... Between the divided frames 2, 2 are relatively small, when the earth and sand 11 inside the retaining wall is in a relatively dry state, the earth and sand 11 inside the retaining wall is relatively dry. Is the front of the retaining wall 1c from the gap of the joint T
Although it does not spill to the side, rainwater has the property of passing through the gap even if the joint T is a minute gap.

[0011]

However, in this type of retaining wall structure (for example, road retaining wall in FIGS. 11 and 12),
There were the following problems. That is, since the minute gaps are formed at the joints T, T, ... Between the respective divided frames 2, 2, when rainwater soaks into the soil on the mountain side in FIG. 12, the rainwater in the soil becomes Passing through the filling soil 12 between the mountain surface Y and the rear surface 1d of the retaining wall, from the above-mentioned joint T (small gap) of the rear surface 1d of the retaining wall to the inside of the space S (filling material 11 such as earth and sand 11).
When the rainwater infiltrating into the inside of the retaining wall becomes saturated with the rainwater invading into the void S inside the retaining wall, the rainwater in the void moves from the joint T (small gap) of the retaining wall front surface 1c to the retaining wall front surface 1c side. It will start to flow. At this time, the filler (earth and sand) inside the retaining wall
Part of 11 (fine particles) becomes muddy water and flows out from the joint T to the retaining wall front surface 1c, and the amount of filler inside the retaining wall decreases over a long period of time, and the retaining wall strength decreases. Alternatively, the asphalt 4 part above the retaining wall may collapse. In addition, when muddy water flows out to the front surface 1c of the retaining wall, the front surface 1c of the retaining wall becomes dirty with the muddy water, which impairs the appearance.

Further, as a filler to be filled in the space S inside the retaining wall, in addition to earth and sand (or mixed with earth and sand), pulverized products of industrial waste materials (for example, concrete pieces, glass pieces, plastic pieces, metal) Wastes containing powder and granules such as mixed substances such as flakes), dried sludge, incineration slag of municipal waste, etc. may be used, but harmful substances (eg arsenic and mercury) are contained in these wastes. Some of them include such harmful substances, and when using a filler containing such harmful substances, harmful substances are also mixed in the mud water flowing out from the joint T (gap) of the retaining wall front surface 1c as described above, which causes environmental pollution. There is also a problem that causes.

In view of the above problems of the conventional retaining wall structure, the present invention assembles a plurality of divided skeletons having a hollow inside vertically and horizontally, and powder particles in the internal cavity of the retaining wall. In a gravity type retaining wall structure filled with a filler containing (for example, earth and sand), the purpose is to prevent the filler filled inside the retaining wall from becoming muddy water and flowing out to the front side of the retaining wall. Is.

[0014]

The present invention has the following constitution as means for solving the above problems. still,
The present invention is directed to a retaining wall structure constructed by assembling a plurality of divided skeletons made of concrete-molded products vertically and horizontally.

The invention of claim 1 of the present application The split frame used in the retaining wall structure of claim 1 of the present application is such that front and rear vertical walls facing each other with a space in front and back are connected by a connecting wall, and the front and rear vertical walls are connected to each other. Concrete molded products with a space between them are used.

As the retaining wall, a shape in which the depth thickness of the bottom of the retaining wall is smaller than the depth thickness of the upper surface of the retaining wall (for example, an inverted trapezoidal shape), or conversely, the depth thickness of the bottom of the retaining wall is the depth thickness of the upper surface of the retaining wall. In the case of constructing a larger shape (for example, a trapezoidal shape), a plurality of kinds of divided skeletons whose depth and thickness are sequentially changed are used as one set of divided skeletons which are stacked vertically. In that case, it is advisable to incline one vertical wall of each divided frame. When constructing a retaining wall with the same depth thickness from the bottom of the retaining wall to the top of the retaining wall,
Use the same shape in which the front and rear vertical walls of each divided frame are parallel to each other.

In the retaining wall constructed by assembling each of the divided skeletons vertically and horizontally, a large continuous space is formed inside the retaining wall. When this retaining wall is a gravity type retaining wall, the voids inside the retaining wall are filled with a filler containing powder particles.

As the filling material to be filled in the retaining wall, any appropriate material can be used as long as it contains powder and granules, such as earth and sand, pulverized material of industrial waste material, dry sludge, and incinerated slag of municipal waste. It should be noted that the granular material in the filling has a property that when immersed in water, some (fine particles) become muddy water and fluidize.

Further, in the retaining wall structure according to claim 1 of the present application, when the space inside the retaining wall is filled with the filling material, the filling material is contained in the impermeable bag, Is filled in the inner space of the retaining wall. This water-impermeable bag is preferably made of a material (or structure) that does not easily puncture or tear.
Further, the bag may be an integral bag having the same volume as a vertically long space (for example, the total height is 3 to 4 m) formed inside the retaining wall, or an individual space (for example, 1
A divided bag having the same shape as the height of 1 m for each divided skeleton) may be used. The water-impermeable bag may be a little larger than the volume of the void as long as it is flexible, and may have a shape that does not match the volume shape of the void if it is large. For example, for the shape of the void is wedge-shaped,
A simple rectangular bag can be used (in which case there will be excess creases on the bottom of the bag).

Further, in the retaining wall structure according to claim 1 of the present application, the upper surface of the retaining wall is covered with the impermeable structure in a state where the inner space of the retaining wall is filled with the bag-filled material. This impermeable structure is for preventing rainwater from entering the inside of the retaining wall from the upper surface of the retaining wall. The upper surface of the retaining wall may be covered (closed) with a concrete lid plate, or When the upper surface of the retaining wall is used for roads, the impermeable structure can be an asphalt road surface.

In the retaining wall structure according to claim 1 of the present application, as described above, a plurality of divided skeletons made of concrete-molded products are assembled vertically and horizontally, and the inner space is filled with a filler containing powder particles. And it is built as a gravity type retaining wall. However, in the retaining wall that has a plurality of divided frames assembled in this way,
The upper and lower and left and right joints of each divided frame (there are two types of horizontal joints and vertical joints) cannot be completely sealed, and a minute gap is formed in each joint. It's a reality. It should be noted that the dry filler (powder and granules) does not spill out from the minute gaps in each joint, but rainwater (muddy water) freely passes through.

By the way, also in the retaining wall structure according to claim 1 of the present application, when rainwater is saturated in the soil on the mountain side (or the land for construction), the saturated rainwater is divided on the rear surface side (mountain side surface side) of the retaining wall. It is conceivable that the inside of the retaining wall will infiltrate into the retaining wall, but since the filling inside the retaining wall is filled in a bag-filled state housed in an impermeable bag, the bag is It has a function of sealing the joint portion from the inner surface side of the retaining wall, and it becomes difficult for the saturated rainwater to enter the inside of the retaining wall from the joint portion. Therefore, the problem that the filler inside the retaining wall is not wet with rainwater (the filler inside the retaining wall does not become muddy) and flows out as muddy water from the joint (small gap) on the front side of the retaining wall. It can be prevented. In particular, when the water-impermeable bag containing the filling is a continuous bag in the vertical direction, it is possible to completely prevent rainwater from entering the filling in the filling bag. or,
When the water-impermeable bag is a bag divided into upper and lower parts, it is conceivable that part of the rainwater that has infiltrated the retaining wall will enter the divided bags from the upper opening of each divided bag. The amount of rainwater entering is very small and not enough to muddy the filling material in the dividing bag. Therefore, even if rainwater enters the retaining wall,
The filler in the retaining wall does not become muddy water and flows out from the joint (small gap) on the front side of the retaining wall.

Further, in the retaining wall structure according to the present invention, since the upper surface of the retaining wall (the upper surface of the internal space) is covered with the water impermeable structure, rainwater is introduced into the retaining wall from the upper surface side of the retaining wall. Does not infiltrate and therefore the filling inside the retaining wall does not get wet with rainwater.

The invention of claim 2 of the present application In the retaining wall structure of claim 2 of the present application, a plurality of divided skeletons made of concrete molded products are assembled vertically and horizontally, and a bag is formed in an internal space of the retaining wall. The filling with the filling material is the same as in the above-mentioned claim 1, but in this claim 2, the upper opening of the bag of the filling material is closed so that water does not enter the bag. Is characterized by.

In the second aspect of the present invention, as the structure for closing the upper opening of the bag, for example, a surplus portion extending above the upper surface height of the predetermined amount of the filler accommodated in the bag is provided at the upper part of the bag. It is possible to adopt a structure in which the surplus portion is integrally molded, and the excess portion is folded, tied with a string, or bonded (seal). In addition, as a structure for closing another bag upper opening, a structure in which another impermeable sheet lid is watertightly attached around the entire circumference of the bag opening edge while the bag is filled with the filling material is adopted. Good.

Incidentally, in the case of using an integral bag having a height over the entire height of the void inside the retaining wall as the bag of the bag-filled filling, 1
It is sufficient to close only one bag opening, but when using a plurality of divided bags in which the void in the retaining wall is divided into upper and lower parts, it is preferable to close the openings of the respective divided bags.

In the retaining wall structure according to the second aspect, since the bag opening portion of the bag filling filled inside the retaining wall is closed, the water impermeable structure is provided on the upper portion of the retaining wall as in the first aspect. Even if there is no material (for example, asphalt pavement) (for example, a structure in which the upper part of the retaining wall is simply laid with earth and sand), rainwater does not enter the bag of the bag-filled material, so that the material in the bag is rainwater. Never get wet

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present application will be described with reference to FIGS. 1 to 9. FIGS. 1 to 3 show a retaining wall structure of the first embodiment of the present application, and FIGS. Shows the retaining wall structure of the second embodiment, FIGS. 6 and 7 show the retaining wall structure of the third embodiment, and FIGS. 8 and 9 show the retaining wall structure of the fourth embodiment. Has been done.

In each retaining wall structure of the first to fourth embodiments, FIG. 1 (first embodiment), FIG. 4 (second embodiment),
As shown in FIG. 6 (third embodiment) and FIG. 8 (fourth embodiment), four types of divided frames 2, 2 ... With different depth thicknesses are used as one set. Each divided frame 2,
2 ... has an inverted trapezoidal shape in which the depth thickness gradually increases from the lower side to the upper side.
.. (FIG. 1, FIG. 4, FIG. 6, FIG. 8) used in each of the first to fourth embodiments are the same as each other, and The same structure is adopted for each of the divided frames 2, 2 ... Shown in the conventional example. Therefore,
The description of the divided skeletons of the embodiments of the present application overlaps with that of the conventional example of FIG. 10, but the configuration of the divided skeletons 2, 2 ... of the embodiments of the present application will be described again. In addition, each divided frame 2,
The configuration of 2 ... Will be described with reference to FIG. 1 as an example.

.. shown in FIG. 1 are respectively integrally molded of concrete with two connecting walls 23, 24 interposed between the front and rear vertical walls 21, 22. The front vertical wall 21 (which is the exposed side of the retaining wall 1) is a vertical wall, and the rear vertical wall 22 (which is the embedded side of the retaining wall 1) is an upward sloped wall. In the following description, the front vertical wall 21 may be referred to as a vertical wall, and the rear vertical wall 22 may be referred to as an inclined wall.

When vertically stacked, the divided skeletons 2, 2 ... In FIG. 1 have vertical walls (front vertical walls) 21 and inclined walls (rear vertical walls) 22 that are flush with each other. So that the depth and thickness are sequentially changed so that Further, in the two divided skeletons 2 and 2 which are joined to each other in the vertical direction, the upper surface shape of the lower tiered divided skeleton 2 and the lower surface shape of the upper tiered divided skeleton 2 have the same shape and size. Each of the divided frame bodies 2 in the illustrated example has a height of 1 m and a left-right length L of 2 m.
The slanted wall 22 of each divided frame 2 is a slanted surface having a slope of 4 minutes. Further, in each of the embodiments of the present application, the divided skeleton body 2 located at the uppermost stage has a top surface with a depth thickness of 2 m.

The left and right connecting walls 23, 24 of each of the divided frame bodies 2, 2, ... Shown in FIG. 1 are located at positions ¼ of the left and right lengths L of the divided frame body 2 from the left and right side edges of the divided frame body 2, respectively. That is, it is formed at a position of dimension N (N = 50 cm) from each of the left and right side edges. Therefore, the distance M between the connecting walls 23 and 24 is 1 m. Vertical wall 21, inclined wall 22, each connecting wall 23,
A suitable thickness of 24 is about 8 to 15 cm. The dimensions of the divided frame 2 are not particularly limited, and it goes without saying that the design can be changed appropriately. Further, in this embodiment, an inverted trapezoidal one is used as the divided frame, but it is not particularly limited to the inverted trapezoidal one. For example, the front and rear vertical walls 21 and 22 are parallel to each other (hence the upper and lower Hollow concrete moldings with the same depth and thickness) can also be used.

Both connecting walls 2 are provided on each of the divided frames 2, 2 ...
An intermediate space 25 is formed between the three and 24, while an end space 26, 2 is formed on each outside of each connecting wall 23, 24.
6 is formed. When the two divided skeletons 2 and 2 are joined to the left and right, they are formed between the combined cavities of the end cavities 26 and 26 formed at the joint and both the connecting walls 23 and 24. The intermediate space 25 that is present has the same shape and size.

Incidentally, in another embodiment, each of the divided frames 2, 2
・ By forming a reinforcing bar insertion hole that penetrates vertically in each of the upper and lower parts, and by inserting the reinforcing bar through the reinforcing bar insertion holes of each of the upper and lower divided frame parts 2, 2 You may make it connect vertically.

In the retaining wall structure of each of the first to fourth embodiments,
By using a large number of sets of each of the divided frames 2, 2, ..., An inverted trapezoidal retaining wall 1 as shown in FIG. 2 is constructed. That is, in the retaining wall construction example of each of the embodiments, as shown in FIG. 3 (and FIGS. 5, 7, and 9), the mountain surface Y on which the road is to be constructed is constructed as follows. First, a concrete bottom slab 9 for placing the lowermost divided frame 2 is placed on the mountain surface Y. Next, as shown in FIG. 2, each divided frame 2, 2 ...
Are installed side by side in the left-right direction, and the second largest divided frame 2, 2, ... To stagger. .. are similarly stacked in a zigzag manner to construct a retaining wall 1 as shown in FIG. The divided skeletons located at the left and right end portions of each of the divided skeletons 2 in the even-numbered stages from the bottom have a horizontal width of 1/2.

When the divided skeletons 2, 2, ... Are stacked in a zigzag manner in this way, as shown in FIG. 2, in the two vertically adjacent divided skeletons 2, 2, the left connecting wall 2 of the upper divided skeleton 2 is connected.
3 and the right side connecting wall 24 of the lower split frame 2, and the right side connecting wall 24 of the upper split frame 2 and the left side connecting wall 2 of the lower split frame 2
3 and 3 are continuous in the same position in the upper and lower sides. Therefore, the synthetic cavities 26, 26 formed at the joints of the two divided skeletons 2 and 2 are provided directly above or below the intermediate cavities 25 formed between the connecting walls 23 and 24 of the one divided skeleton 2. Will be completely polymerized. Also, in this way, each divided frame 2,
In the retaining wall 1 formed by stacking 2 ... In a zigzag manner, a plurality of vertically long spaces S, S ... Partitioned by the connecting walls 23 and 24 are formed in the retaining wall 1 in the retaining wall length direction. .

In the retaining wall structure of each embodiment of the present application, the retaining wall 1
3 (first embodiment), FIG. 5 (second embodiment), FIG. 7 (third embodiment), and FIG. 9 (fourth embodiment), respectively, in the inner spaces S, S ... Impermeable bag (3
1, 32) is filled with a packing material 3 (or 3A) containing a packing material 33 containing powder particles. In each of the embodiments of the present application, earth and sand are used as the filler 33 contained in the bag (31, 32), and the filler may be referred to as earth and sand in the following description.

The first embodiment (FIGS. 1 to 3) and the second embodiment
In the embodiment (FIGS. 4 to 5), the upper surface of the retaining wall 1 is covered with the impermeable structure 4, and the third embodiment (FIGS. 6 to 7) and the fourth embodiment (FIGS. 8 to 9). ), In each bag (31, 3
2) The upper opening of the bag is closed in the state where the filler (earth and sand) 33 is accommodated inside.

The first to fourth embodiments will be individually described below.

First Embodiment In the first embodiment shown in FIGS. 1 to 3, as an impermeable bag, an integral unit having the same shape and substantially the same size as the internal spaces S, S ... Of the retaining wall 1 is formed. The bag 31 is used. That is, the integrated bag 31 used in the first embodiment has a height (4 m) of the retaining wall 1.
It has the same height as that and fits completely into the internal space S of the retaining wall 1. The integral bag 31 is made of, for example, a plastic sheet having flexibility and a relatively strong material. Since the integral bag 31 has flexibility, it may be slightly larger than the shape of the internal space S of the retaining wall 1, and as described later, the bag 31 will be filled with earth and sand 33.
, The side surfaces of the bag 31 swell due to earth pressure and come into close contact with the inner surfaces of the internal space S of the retaining wall 1.
The integral bag 31 is transported in a state of being folded in a small size, is stretched in a use state, and is inserted into the space S.

In the retaining wall structure of the first embodiment, as shown in FIG. 2, after assembling a large number of divided frames 2, 2, ... , The integral bag 31 is inserted into the internal space S of the retaining wall 1 from the bottom side,
As shown in FIG. 3, a filling material (earth and sand) 33 is filled in the integral bag 31 up to the upper opening height (the height of the upper surface of the retaining wall 1).
The earth and sand 33 filled in the integrated bag 31 is appropriately compacted. Then, for each of the internal cavities S, S ... Of the retaining wall 1, the integral bag 31 is inserted and the earth and sand 33 are filled in the same manner. After that, the earth 12 is filled up to the height of the upper surface 1a of the retaining wall ₁ in the space S ₁ between the rear wall (sloping wall) 1d of the retaining wall 1 and the mountain surface Y.

Next, when the retaining wall 1 is used for a road as in the retaining wall structure of the first embodiment, the retaining wall 1 extends over the retaining wall upper surface 1a and the backfill earth 12. Asphalt pavement 4 is performed (until the mountain surface Y is reached) to form a road 10 having a predetermined width. In addition, this asphalt pavement 4
The structure is a water-impermeable structure within the scope of the claims, and the entire upper surface of the retaining wall 1 is covered in a water-impermeable state by the asphalt pavement 4. Therefore, rainwater does not enter the retaining wall 1 from the upper surface side of the retaining wall 1.

As described above, in the retaining wall structure of the first embodiment, since each of the inner cavities S, S ... of the retaining wall 1 is filled with the bag-filled filler 3, it functions as a gravity retaining wall. Can be made. Further, in this first embodiment, since the retaining wall 1 has an inverted trapezoidal shape, the depth width of the retaining wall upper surface 1a becomes large, and when the retaining wall upper surface 1a is used as the road 10, the retaining wall upper surface 1a. Can be used for a part of the road width, it is not necessary to excavate the mountain surface Y, or the excavation width can be reduced.

By the way, in the retaining wall 1 constructed by assembling a large number of divided skeletons 2, 2 ... Vertically and horizontally, the joints T, T. It is not possible to completely seal (there are two types of horizontal joints and vertical joints), and minute gaps are formed in each of the joints T, T. And also in the retaining wall structure of each embodiment of this application, when a large amount of rainwater is contained in the soil on the mountain side (becomes a saturated state), the divided frame joints T, T ...
It is conceivable that rainwater will infiltrate into the retaining wall.

However, in the retaining wall structure according to the first embodiment, as shown in FIG. 3, the earth and sand 33 inside the retaining wall are filled in the impermeable integral bag 31 so that the integral bag 31 is filled. 31 has a function of sealing the joints T, T ... from the inner surface of the retaining wall, and the integral bag 31 prevents rainwater from entering the retaining wall. The integral bag 31 is joined to the inner surface of the retaining wall in a close contact state, but it does not watertightly close the joints T, T ... Between the divided skeletons, but the joint on the rear surface 1d side of the retaining wall. It is conceivable that rainwater from the soil (filled soil 12) on the mountain side may infiltrate, although at a slight amount from T. However, even if the rainwater (trace amount) enters the retaining wall,
Since the earth and sand 33 inside the retaining wall is completely accommodated in the integral bag 31, the earth and sand 33 will not get wet with the infiltrating rainwater.
Therefore, the earth and sand 33 inside the retaining wall become muddy, and the retaining wall front surface 1
It is possible to surely prevent the problem of flowing out from the joints T on the c side.

[0046] In the retaining wall structure of the second embodiment shown in Second Embodiment FIG. 4 and FIG. 5, the retaining wall 1 (for example, in Figure 2 constructed by assembling the divided precursor 2,2 ... in vertical and horizontal For each of the inner cavities S, S ... of the retaining wall), use the dividing bags 32, 32 ... Of the same size as the individual cavities formed in the divided skeletons 2, 2 ... There is. That is, in this second embodiment, the depth thickness of each of the divided frames 2, 2 ... Stacked vertically is different, and therefore the size (depth width) of the individual voids in the divided frames of each stage is different. Each of the divided bags 32, 32, ... Is of the same shape and size as the individual space in each divided skeleton 2, 2 ,.

In order to construct the retaining wall structure of the second embodiment, every time each of the divided skeletons 2, 2, ... Of the same shape is assembled from the lower side, each individual vacant space (intermediate A divided bag 32 having a size commensurate with the empty space is inserted into each empty space 25 and each combined empty space composed of the left and right end empty spaces 26, 26, and each of the divided bags 32 is filled with earth and sand. 33 are accommodated, and the filling materials 3A, 3A ... In the same manner as above, the divided frames of each stage are piled up, and the packing materials 3A, 3A
・ Gravity-type retaining wall 1 filled with earth and sand 33
To build. As in the first embodiment, the asphalt pavement (impermeable structure) 4 is applied to the upper surface 1a of the retaining wall 1 to use the retaining wall upper surface 1a as a road 10.

The retaining wall structure of the second embodiment is suitable when the height of the retaining wall 1 to be constructed is high.
By vertically dividing the bag-filled material 3A, 3A, ... Filling the inner space S of the above, the earth and sand 33 can be reliably filled in each of the divided frames 2, 2 ,.

In the second embodiment, each divided bag 32, 3
2 ... Each of the vertically long voids S inside the retaining wall is filled with a bag-filling material 3A, 3A.
In this case, they are filled in a stacked state, but in this case, the upper and lower divided bags 32, 32 ,.
Are separated in the vicinity of the joint T. By the way, in the case of using the bag-filled fillers 3A, 3A ... That are divided into the upper and lower portions in this way, the joint portion T (lateral joint portion) on the rear surface 1d side of the retaining wall is used.
It is conceivable that some of the rainwater that enters from the inside of the dividing bag 32 enters the dividing bag 32 through the upper openings of the dividing bags 32, 32 ... The amount is not enough to make the earth and sand 33 muddy. Therefore, even if rainwater enters the void S inside the retaining wall, the earth and sand 33 in the retaining wall becomes muddy water, and the joints T, T.
・ It does not flow out from. In the case of the second embodiment as well, since the upper surface of the retaining wall 1 is covered with the impermeable structure (asphalt pavement) 4, rainwater enters the retaining wall 1 from the retaining wall upper surface 1a side. There is no such thing.

The retaining wall structure according to the third embodiment shown in Third Embodiment FIG. 6 and FIG. 7 shows a modification of the case of using the integral bag 31 in the same manner as the first embodiment (FIGS. 1 to 3) ing. In the third embodiment, the integral bag 31 has a volume slightly deeper than the total height of the retaining wall 1. That is, as shown in FIG. 7, the integral bag 31 is a predetermined height above the upper surface height (the same height as the retaining wall upper surface 1a) of a predetermined amount of filler (sand) 33 contained in the bag. A surplus portion 31a extending to the above is integrally formed. The upward extension height of the surplus portion 31a is, for example, 50 to 10
0 cm is enough.

In the third embodiment, the integral bag 3
1 is inserted into the space S inside the retaining wall, and the filler (earth and sand) 33 is filled into the integrated bag 31 up to the height of the retaining wall upper surface, and then the excess portion 31a at the upper portion of the bag is closed, Water is prevented from entering the bag through the opening.

As a method of closing the opening of the integral bag 31,
The upper surplus portion 31a is shown by a chain line in FIG.
1a '), the opening may be wound several times from the gusset-folded state (in this case, appropriate temporary fixing may be performed while the opening is wound), or the surplus portion 31a is formed as described above. The inner surface of the opening may be adhered in a gusset-folded state (adhesive may be used or heat sealing may be performed), or the surplus portion 31a.
You may bundle the upper end side of and bind with a string. In another embodiment, as a method of closing the opening of the integrated bag 31, another impermeable sheet lid is attached to the opening edge of the bag with the filler (earth and sand) 33 filled in the integrated bag 31. It can also be installed in a watertight manner (sealing the outer circumference).

In the retaining wall structure of the third embodiment, since the opening of the integral bag 31 of the bag-filled filler 3 is closed as indicated by reference numeral 31a in FIG. 7, the upper portion of the retaining wall 1 is impermeable. (In each of the first and second embodiments, asphalt pavement 4)
Rainwater does not infiltrate into the integrated bag 31 by simply covering the sand 5 (having water permeability) without performing the above.
In the case of the third embodiment as well, it goes without saying that the upper part of the retaining wall may be provided with asphalt pavement (impermeable structure).

[0054] In the retaining wall structure according to the fourth embodiment shown in Fourth Embodiment FIG. 8 and FIG. 9, the second
As in the embodiment (FIGS. 4 to 5), the divided bags 32 are used as bags.
32 ... In the fourth embodiment, the divided bags 32, 32, ... Have a volume slightly deeper than the height of the divided frames 2, 2 ,. That is, as shown in FIG. 8, each of the divided bags 32, 32 ... Has a surplus portion 32a extending upward by a predetermined height above the height of the internal space of each of the divided skeletons 2, 2 ,. Are integrally molded. The upward extension height of the surplus portion 32a of each divided bag 32 may be, for example, about 50 to 100 cm.

In the retaining wall structure of the fourth embodiment, as in the case of the second embodiment, when the divided skeletons 2 on the lower stage side are sequentially assembled, the vacant space (depth length) of the divided skeletons 2 is increased. The divided bag 32 suitable for the above is inserted into each empty space of the first stage, and the filling material (earth and sand) 33 is filled into each divided bag 32 up to the height of the upper surface of the divided frame 2, and the upper portion of the divided bag 32. Surplus part 3
2a is closed in the same manner as in the case of the third embodiment (the vacant space of the divided skeleton 2 of the first stage is filled with the divided bag filling material 3A). Then, each divided frame 2 in the next stage (second stage from the bottom)
Is assembled on the first-stage divided skeleton 2, and similarly, the divided bag-filling filler 3A is filled in the space of each divided skeleton 2, and the divided skeletons 2 are sequentially assembled to the uppermost stage and the divided sack is filled. Fill the filling 3A.

In the retaining wall structure of the fourth embodiment, the divided bags 32, 32 in the bag-filled fillings 3A, 3A ...
.. The upper openings of .. are closed (32a in FIG. 9) so as to prevent water from entering, so if rainwater saturated on the mountain side is retained from each joint T on the rear surface 1d side of the retaining wall to the retaining wall. Even if it penetrates into the inside, since the upper opening of each divided bag 32 is closed, the infiltrating rainwater does not enter the divided bag 32. Therefore, the packing material 3A, 3A ...
Even if the above is used, the filler (earth and sand) 33 filled in the retaining wall will not get wet with rainwater.

In addition, in the retaining wall structure of the fourth embodiment, since the upper opening of the divided bag-filled filling 3A at the uppermost stage of the retaining wall is also closed, the upper portion of the retaining wall 1 is simply covered with the earth and sand 5. Even in the case of the item, the filler (earth and sand) 33 in the filler 3A in the bag does not get wet with rainwater. In the case of the fourth embodiment as well, it goes without saying that the upper part of the retaining wall may be provided with asphalt pavement (impermeable structure).

[0058]

The retaining wall structure according to the invention of claim 1 of the present application comprises a plurality of divided skeletons 2, 2, ... Consisting of concrete molded products in which cavities 25, 26 are provided between the front and rear vertical walls 21, 22. In the retaining wall 1 constructed by assembling vertically and horizontally, in the inner space S of the retaining wall 1, a packing (eg, earth and sand) 33 containing a granular material is housed in an impermeable bag (31, 32). The filling material (3, 3A) is filled, and the upper surface of the retaining wall 1 is covered with the impermeable structure 4.

The retaining wall structure according to the second aspect of the present invention comprises a plurality of divided frames 2, 2, ... Made of a concrete molded product in which voids 25, 26 are provided between the front and rear vertical walls 21, 22. In the retaining wall 1 constructed by assembling vertically and horizontally, the retaining wall 1
The inner space S of the above is filled with a filling material (3, 3A) containing a filling material (for example, earth and sand) 33 containing a granular material in an impermeable bag (31, 32), and Bag (31,
The upper opening of 32) is closed to prevent water from entering the bag.

In the retaining wall structure of each of the first and second aspects of the present invention, the impermeable bag (31, 32) has the joint T (there is a minute gap) between the divided skeletons 2, 2 on the inner surface of the retaining wall. Since the bag has a function of sealing, rainwater can be prevented from entering the inside of the retaining wall from the joint portion T of the divided skeletons. Therefore, it is possible to prevent the filler (earth and sand) 33 filled in the retaining wall from being muddyed by the infiltrating rainwater, and the earth and sand 33 in the retaining wall 1 becomes muddy water and the front surface (exposed surface) of the retaining wall. There is an effect that it can be prevented from flowing out from the joint portion T on the 1c side.

If the earth and sand 33 in the retaining wall 1 becomes muddy water and flows out from the divided skeleton joint T on the front surface 1c of the retaining wall, the amount of earth and sand inside the retaining wall decreases and the retaining wall strength decreases. Alternatively, the asphalt pavement part on the upper part of the retaining wall may be depressed, and the mud water stains the retaining wall front surface 1c (impairs aesthetics), and as a filling material filled in the retaining wall, harmful substances such as industrial waste materials (for example, When a filler containing arsenic or mercury) is used, there is a problem that harmful substances are mixed in the mud water flowing out from the joint T of the front surface 1c of the retaining wall (which causes environmental pollution). The above retaining wall structure can prevent these problems.

[Brief description of drawings]

FIG. 1 is a perspective view of each divided skeleton and an impermeable bag (integral bag) used in the retaining wall structure of the first embodiment of the present application.

FIG. 2 is a perspective view of a retaining wall assembled using the split frame of FIG.

FIG. 3 is a cross-sectional view of a state in which the retaining wall structure of FIG. 2 is applied to a mountain surface.

FIG. 4 is a perspective view of each divided skeleton and an impermeable bag (divided bag) used in the retaining wall structure of the second embodiment of the present application.

FIG. 5 is a cross-sectional view of a retaining wall structure constructed on a mountain surface by using each divided skeleton of FIG. 4 and an impermeable bag (divided bag).

FIG. 6 is a perspective view of each divided skeleton and an impermeable bag (integral bag) used in the retaining wall structure of the third embodiment of the present application.

FIG. 7 is a cross-sectional view of a retaining wall structure constructed on a mountain surface by using each divided skeleton of FIG. 6 and an impermeable bag (integral bag).

FIG. 8 is a perspective view of each divided skeleton and an impermeable bag (divided bag) used in the retaining wall structure of the fourth embodiment of the present application.

9 is a cross-sectional view of a retaining wall structure constructed on a mountain surface by using each divided skeleton of FIG. 8 and an impermeable bag (divided bag).

FIG. 10 is a perspective view of each divided frame body used in a conventional retaining wall structure.

11 is a perspective view of a retaining wall assembled using the split frame body of FIG. 10. FIG.

FIG. 12 is a cross-sectional view showing a state in which the retaining wall structure of FIG. 11 is applied to a mountain surface.

[Explanation of symbols]

1 is a retaining wall, 1a is a retaining wall upper surface, 1c is a retaining wall front surface, 1d is a retaining wall rear surface, 2 is a divided frame, 3 and 3A are bag-filled, 4 is a water impermeable structure (asphalt pavement), 21 22 is a vertical wall,
23 and 24 are connecting walls, 25 and 26 are voids, S is a void in the retaining wall, 31 is a water impermeable bag (integral bag), 31a is a surplus portion,
32 is an impermeable bag (divided bag), 32a is a surplus part, 33
Is a filling (sand) and T is a joint.

Claims (2)

[Claims] 1. A space (2) is formed between the front and rear vertical walls (21, 22).
In a retaining wall (1) constructed by vertically assembling a plurality of divided frames (2, 2 ··) made of a concrete molded product provided with an inner space of the retaining wall (1). In place (S), impermeable bag (3
1, 32) is filled with a filling material (3, 3A) containing a filling material (33) containing powder particles, and the upper surface of the retaining wall (1) is impermeable to the water-impermeable structure (4). ), The retaining wall structure characterized by the above. 2. A space (2) between the front and rear vertical walls (21, 22).
In a retaining wall (1) constructed by vertically assembling a plurality of divided frames (2, 2 ··) made of a concrete molded product provided with an inner space of the retaining wall (1). In place (S), impermeable bag (3
1, 32) is filled with a filling material (3, 3A) containing a filling material (33) containing powder and granules, and the upper opening of the bag (31, 32) is placed in the bag. Retaining wall structure characterized by being blocked so that water cannot enter.