JP4885262B2 - Assembly structure of skeleton block for water storage facility, water storage facility, skeleton block for water storage facility, and method for constructing assembly structure of skeleton block - Google Patents

Description

  The present invention relates to a water storage facility such as rain water for storing rain water or the like to be used for fire prevention, water sprinkling, flood prevention or the like in a building or an apartment house, particularly a housing complex.

2. Description of the Related Art Conventionally, various water storage facilities for storing rain that has fallen are provided in, for example, vacant lots around a large building or housing complex, or in a basement of a bicycle storage area.
One of these types is to temporarily store precipitation in a water storage facility and gradually drain it into sewage, or to infiltrate the surroundings to prevent urban flooding (temporary storage type). is there. The other type is provided for the purpose of using rainwater stored in a water storage facility as fire prevention water or for sprinkling water in flower beds, vegetable gardens, etc. (water storage type).
In particular, in recent years, when a new building or housing complex is constructed in preparation for water shortage in summer, a storage facility for rainwater or the like of this kind is often provided.

As a typical example of this kind, there is a water storage facility described in Patent Document 1. This is the former type, that is, a temporary storage type storage facility for the purpose of preventing urban flooding.
As shown in FIG. 16, the ground 1 is dug down in advance to form, for example, a rectangular hole 2 having a rectangular planar shape, and then the inner surface (including the side surface 2a and the bottom surface 2b) of the hole 2 is exposed to gravel or the like. The lining layer 3 is formed by covering with a nonwoven fabric or the like. In addition, if it is a storage facility such as a storage type rainwater, it is covered with a waterproof sheet.

When the lining layer 3 is formed, a container-like skeleton block 4 is assembled vertically and horizontally in the digging hole 2 to form a space-holding skeleton block structure 5 having a water storage space therein. When the space holding skeleton block structure 5 is completed, finally, gravel and soil are backfilled on the space holding skeleton block structure 5 to form the coating layer 9.
In FIG. 15, reference numeral 10 denotes an inflow port for rainwater or the like to the water storage unit 2, and reference numeral 11 denotes an outflow port.

Japanese Patent Publication No. 4-26648 (Japanese Patent Laid-Open No. 63-268823)

In a water storage facility such as rainwater described in Patent Document 1, the container-like skeleton block 4 is configured by a bottom plate or a peripheral side plate having a large number of holes, or the shape is tapered so as to decrease toward the bottom. These are stacked upside down to form the space holding skeleton 5.
However, when this type of skeleton block 4 is used, there are the following problems.
That is, in the case of this type of water storage facility, since sediment easily flows into the space holding skeleton block structure 5, the sedimentation state of the sediment is regularly checked. If the amount of sediment deposited is large, the water storage facility When the water in the inside becomes empty, the sediment must be scooped up and removed.
However, in the case where the container-type skeleton block 4 described in Patent Document 1 is assembled vertically and horizontally, there is not much space between the container-type skeleton blocks 4, so that it is difficult to see from the entrance side to the back, for example. Moreover, since the amount of sediment deposited in the skeleton block 4 is hardly visible from the outside, there is a problem that it is difficult to confirm visually.
Further, when assembling the skeleton block 4 vertically and horizontally, if the skeleton block 4 is a container type, the operator must carry and assemble it by turning his arm around the thick trunk part constituting the container. For this reason, there is a problem that workability is poor such that it is difficult to see the front during transportation, difficult to carry, and difficult to assemble.

  In view of the above problems, the object of the present invention is to have a good view of the inside of the space-holding skeleton block structure, such as when periodically checking the amount of sediment deposited on the space-holding skeleton block structure constituted by assembling the skeleton block. A skeletal block that is easy to inspect, and has excellent workability during transportation and assembly by an operator, or a space retaining skeleton block structure in which a plurality of these are assembled, and these skeleton blocks and space retaining skeleton block structures are included. The purpose is to provide rainwater storage facilities.

Assembly structure of water storage facilities for skeletal block according to the first aspect of the present invention to achieve the above object, a Juana the upper provided dug ground are open, the plurality disposed該掘bore and space holding skeletal block structure is configured by assembling a resin skeleton block, met assembly structure of the skeleton blocks to be used for water storage facility rain water and a coating layer covering the opening of the top of the Juana The skeleton block includes a flat base, a support integrally provided on one surface of the base and having a support-side fitting portion at a tip, and a side on which the support is provided A base-side fitting portion provided on the base surface to which the support-side fitting portion can be fitted, and the base surfaces on which the support is erected are made to face each other with a pair of the skeleton blocks When the support side fitting part of one skeleton block is the other skeleton block It is characterized in that fitted to the base side engaging portion.
The assembly structure of the skeletal block for a water storage facility according to claim 2 is characterized in that the support has a truncated cone shape.

According to the assembly structure of the thus ing with water storage facilities use skeleton block, skeleton block has a flat base, the support side fitting portion on the tip are erected on one surface of the base board Because it has a non-container shape having a support and a base-side fitting portion that is provided on the base surface side on which the support is erected and to which the support-side fitting portion can be fitted, There are many gaps in the space-maintaining skeleton block structure formed by assembling skeleton blocks vertically and horizontally. Therefore, it can be relatively easily seen from an arbitrary place to the inner part of the space holding skeleton block structure. That is, it is possible to easily check the sedimentation status by visual observation.

Also, unlike a container type, when constructing a space-retaining skeleton block structure by assembling a plurality of skeleton blocks vertically and horizontally, for example, because the outer diameter of the support portion is thin, it can be held or grasped Easy to hit. Further, since the thickness of the base portion is relatively thin, it can be easily grasped. Therefore, the conveyance method according to the situation can also be selected. Thus easy transportation of skeletal block facilitates assembly of the space holding skeletal block structure.
In addition, although it is possible to use skeleton blocks having different shapes as the skeleton blocks to be assembled vertically, it is more efficient to use skeleton blocks having the same shape. Therefore, in the assembly structure of the skeleton block according to claim 1, when two skeleton blocks having the same shape are prepared, for example, and the pair of skeleton blocks face each other on which the support is erected, The support side fitting part of the support body of one skeleton block can be fitted to the base side fitting part of the other skeleton block. Therefore, basically, the space-retaining skeleton block structure can be formed with one kind of skeleton block, so that the assembly work of the skeleton block is facilitated.

In addition , for example, on the two diagonal lines of the length l of the flat base, the support body is equidistant (1/4) from the center of the base, and the base side is fitted on the other diagonal line. If the skeleton blocks in which two joint portions are respectively arranged are used, the straight lines connecting the centers of the skeleton blocks so that the support body faces up to four skeleton blocks, and the outline of the skeleton block, for example, If the outlines of the skeleton blocks are square or rectangular, they are arranged in a plane in the same direction so as to form a square or rectangle, and arranged in a plane, and the four skeleton blocks in this state are arranged at the four adjacent corners. When the skeleton block having the same shape as the skeleton block is opposed to the four skeleton blocks so as to extend over the distance, the base side fitting of the opposite skeleton block where the support side fitting portions of the opposed skeleton blocks face each other It to the joint Re is sometimes able allowed to fit.
Therefore, 1 only using a kind of backbone block, in a staggered arrangement the upper layer of the skeletons blocks on backbone block paved the lower layer, i.e. can be assembled so as to extend over the almost equal intervals in four skeletal block adjacent There is . As a result, it is also possible to easily form a new skeleton block layer on the lower skeleton blocks while connecting the skeleton blocks to each other at the four corners adjacent to each other.
In this manner, the upper layer can be formed while the lower skeleton blocks are connected by the skeleton blocks themselves arranged in the upper layer without being connected by a connecting member or the like separately. Therefore, it is not necessary to prepare a separate connecting member, and the assembly work of the space holding skeleton block structure using this skeleton block is facilitated accordingly.

The assembly structure of water storage facilities for skeletal block of claim 3, wherein, in the assembled structure of the water storage facilities for skeletal block according to claim 1 or claim 2, wherein the support side fitting portion and the base side of the backbone block One of the fitting portions is a fitting projection, and the other is a fitting hole that fits into the fitting projection.
In this way, the connection between the skeletal blocks positioned up and down facing each other is performed by fitting a fitting projection formed on one skeleton block and a receiving part formed on the base of the skeleton block on the other side, for example, fitting Can be done with holes. As described above, since the skeleton block can be assembled with a fitting protrusion and a fitting receiving portion, for example, a fitting hole, which are simple in structure and easy to form, the space holding skeleton block structure can be easily constructed.

Further assembly structure of or water storage facilities for skeletal block according to claim 4, wherein, in the assembled structure of the water storage facilities for skeletal block according to any one of claims 1 to 3, wherein the backbone block its base outer periphery The other skeleton block having the outer periphery fitting portion adjacent to the outer periphery fitting portion when the skeleton blocks are arranged adjacent to each other in the horizontal and vertical direction. The outer periphery fitting receiving portion can be respectively fitted.
The assembly structure of the skeleton block for a water storage facility according to claim 5 is the assembly structure of the skeleton block for a water storage facility according to any one of claims 1 to 4, wherein the support body is the same as the four skeleton blocks. Adjacent to each other so as to face each other in a plane, the skeleton blocks having the same shape as the skeleton blocks are equally spread over four adjacent corners of the four skeleton blocks, and the four It is made to oppose the base surface of a skeleton block, and the support body side fitting part of the opposing skeleton blocks is each fitted to the base side fitting part of the other party skeleton block.
According to the skeleton block formed in this way, the skeleton block can be assembled and integrated in the horizontal direction. As a result, the mechanical strength of the assembled space-retaining skeleton block structure can be improved.
By the way, even if the skeleton blocks are assembled in a so-called staggered arrangement like the assembly structure of the skeleton block according to claim 5 described above, the mechanical strength of the entire space holding skeleton block structure can be improved. If the skeleton blocks adjacent in the horizontal direction are connected to each other by the base side fitting portion provided on the adjacent base outer peripheral portion and the outer peripheral fitting receiving portion to which the base block is fitted, further mechanical strength is obtained. It is possible to construct a space-retaining skeleton block structure excellent in the above.

In addition, one of the outer periphery fitting portion and the outer periphery fitting receiving portion of the skeleton block is a fitting protrusion, and the other is a fitting hole that fits into the fitting protrusion .
In this way, the skeleton blocks adjacent to each other in the horizontal direction, specifically, the connection between the bases, are fitted to the fitting protrusion provided on the base outer periphery of one skeleton block and the base outer periphery of the other skeleton block. It can be performed with an extremely simple structure of the provided outer periphery fitting receiving portion, specifically a fitting hole.

Further, base contour skeletal block shape is simple, square, since it formed in a rectangular shape or the like, can be easily carried out transportation and assembly operations. Moreover, in the case of a square or a rectangle, the conveyance efficiency by a truck etc. can also be made high and it is especially preferable.

In addition, on one diagonal line of the base of the skeleton block, the support side fitting part and the base side fitting part are provided one by one across the center of the base and equidistant from the center. The support-side fitting part sandwiching the center of the base on the other diagonal line and being symmetrical with the support-side fitting part and the base-side fitting part provided on the one diagonal line And it has the base side fitting part, It is characterized by the above-mentioned.
The skeleton block formed in this way has a very simple structure and can be reduced in shape. Therefore, handling is easy, and transportation and assembly operations are extremely easy .

In addition, pre-Symbol backbone block is characterized by a backbone block of resin.
According to the resin-made skeleton block formed in this way, the skeleton block can be manufactured by injection molding or the like. Therefore, the manufacture is easy, and therefore, a low-cost skeleton block can be obtained.

The water storage facility according to claim 6 is intended to be constituted by assembling a plurality of assembled structures skeletal blocks according to the horizontal and vertical directions to any one of claims 1 to claim 5.
According to the water storage facility consisting in this manner, during regular sedimentation volume confirmation inspection space holding skeletal block structure constituted by assembling skeleton blocks, to improve the prospects of space holding skeletal block structure portion Can do. Therefore, a visual inspection or the like inside the structure can be easily performed.
A skeletal block according to claim 7 is a skeleton block used for the assembly structure of the skeletal block for the rainwater storage facility according to claim 1, wherein the skeletal block includes a plate-like base and a base of the base A support body standing upright on one surface and having a support-side fitting portion at the tip, and a base provided on the base surface on the side where the support body is erected and to which the support-side fitting portion can be fitted It has a base side fitting part, It is characterized by the above-mentioned .
Moreover, the construction method of the assembly structure of the skeleton block according to claim 8 is the construction method of the assembly structure of the skeleton block for the rainwater storage facility according to claim 1, wherein the skeleton block includes a flat base and A support body standing upright on one surface of the base and having a support-side fitting portion at the tip, and the support-side fitting portion provided on the base surface on the side where the support is upright. A base-side fitting portion that can be fitted, a pair of the skeleton blocks, a base surface on which the support body of one skeleton block is erected, and the support body on which the other skeleton block is erected. The support side fitting part of one skeleton block is fitted to the base side fitting part of the other skeleton block, and the support side of the other skeleton block is installed. The fitting part is fitted to the base side fitting part of one skeleton block. And it is characterized in and.

  As described above, according to the present invention, the inside of the space holding skeleton block structure has a good view during the periodic soil sedimentation amount confirmation inspection and the like of the space holding skeleton block structure configured by assembling the skeleton block. A skeletal block that is easy to inspect, and has excellent workability during transportation and assembly by an operator, or a space retaining skeleton block structure in which a plurality of these are assembled, and these skeleton blocks and space retaining skeleton block structures are included. The purpose is to provide rainwater storage facilities.

In one Example of the skeleton block of this invention, it is a typical perspective view which shows the state which laminate | stacks skeleton blocks up and down. It is a top view of the skeleton block shown in FIG. (A) is the longitudinal cross-sectional view which shows an example of the state which laminated | stacked the skeleton block shown in FIG. 2, (b) is the top view which looked at the skeleton block from the downward direction. It is a top view which shows another Example of the frame | skeleton block of this invention. It is a top view which shows another Example of the frame | skeleton block of this invention. FIG. 3 is a plan view showing a state in which the skeleton blocks shown in FIG. 2 are assembled in a staggered arrangement. It is a top view which shows the state which assembled | attached the frame | skeleton block shown in FIG. 4 on zigzag arrangement. FIG. 10 is a plan view showing still another embodiment of the skeleton block of the present invention and showing a state in which the skeleton block is assembled in a staggered arrangement. FIG. 5 is a plan view showing another embodiment of the skeleton block according to the present invention, in a state where the skeleton blocks are assembled in a staggered arrangement. It is a perspective view which shows the state of zigzag arrangement | positioning shown in FIG. The still another Example of the skeleton block of the present invention is shown, and is a plan view showing a state in which the skeleton block is assembled in a staggered arrangement. It is a partial cross section figure which shows the front-end | tip shape of the support body of the frame | skeleton block of this invention. It is a perspective view which shows the state which accumulated the frame | skeleton block shown in FIG. 2 for the purpose of conveyance. It is a partial cross section figure which shows another tip shape of the support body of the frame | skeleton block of this invention. It is a top view which shows the outer periphery fitting part and outer periphery fitting receiving part which were provided in the frame | skeleton block of this invention. It is sectional drawing which shows the conventional water storage facilities, such as a common rainwater.

FIG. 1 is a perspective view showing an embodiment of the skeleton block of the present invention used in a water storage facility such as rainwater. As shown in FIG. 1, the skeleton block 4 shown in this embodiment includes a base 41 having a flat plate shape and a substantially square shape (hereinafter simply referred to as a square) and one diagonal of two diagonal lines on the base 41. Two support bodies 42 standing on the top and having a support body side fitting portion 42a at the tip, and provided on the same base surface as the side where the support body 42 is erected, for example, the support body side fitting portion 42a is fitted. Two base side fitting portions 43 that can be combined are provided on the other diagonal line. In addition, when two skeleton blocks 4 are prepared and the base surfaces on which the support bodies 42 are erected face each other, the pair of skeleton blocks 4 are opposed to each other. The support body side fitting part 42a located in this is fitted to the two base side fitting parts 43 of the other skeleton block 4, respectively.
Incidentally, the base side fitting part 43 is generally a fitting hole, but the support side fitting part 42a side is used as a fitting hole, and the base side fitting part 43 is used as a fitting protrusion. You can also

FIG. 1 is a perspective view showing an embodiment of the skeleton block of the present invention used in a water storage facility such as rainwater. As shown in FIG. 1, the skeleton block 4 shown in this embodiment includes a base 41 having a flat plate shape and a substantially square shape (hereinafter simply referred to as a square) and one diagonal of two diagonal lines on the base 41. Two support bodies 42 standing on the top and having a support body side fitting portion 42a at the tip, and provided on the same base surface as the side where the support body 42 is erected, are fitted with the support body side fitting portion 42a. Two possible base side fitting portions 43 are provided on the other diagonal line. In addition, when two skeleton blocks 4 are prepared and the base surfaces on which the support bodies 42 are erected face each other, the pair of skeleton blocks 4 are opposed to each other. The support body side fitting part 42a located in this is fitted to the two base side fitting parts 43 of the other skeleton block 4, respectively.
Incidentally, the base side fitting part 43 is generally a fitting hole, but the support side fitting part 42a side is used as a fitting hole, and the base side fitting part 43 is used as a fitting protrusion. You can also

  Specifically, as shown in the lower figure in FIG. 1, when the same skeleton block 4 displayed as the third stage in FIG. 1 is assembled with the support 42 side facing each other up and down, The support side fitting part 42a of the support 42 of the first stage skeleton block 4 is placed on the base side fitting part 43 of the second stage skeleton block 4 placed upside down, and the second stage skeleton The support body side fitting portion 42a of the support body 42 of the block 4 is fitted to the base side fitting portion 43 of the first-stage skeleton block 4, respectively.

The skeleton block 4 described above will be described more specifically with reference to FIG. For example, on two diagonal lines of length l of the flat base 41 having a flat shape, the support 42 is located at an equal distance (l / 4) from the center 45 of the base 41 and on the other diagonal line. Two base side fitting portions 43 are arranged as shown in FIG.
In the following drawings, a circle is a base side fitting portion 43 which is a fitting receiving portion made of, for example, a fitting hole, and a double circle is at the tip, for example, a protruding support side fitting portion 42a. The support body 42 is shown. In FIG. 2, the base side fitting portion 43 arranged on the diagonal line drawn from the upper left to the lower right is not dimensioned for easy understanding, but is pulled from the upper right to the lower left. It is in the same positional relationship as the support body 42 provided on the diagonal line.

In FIG. 2, the left skeleton block 4 is a first-stage skeleton block 4. This first stage skeleton block 4 is placed with the side on which the support 42 is erected facing upward, and is the second stage skeleton block 4 depicted on the right side, which is the same as that of the first stage on the left side. The same shape is placed on the first stage skeleton block 4. At this time, the support side fitting part 42a at the tip of the support 42 of the first stage skeleton block 4 is fitted to the base side fitting part 43 of the second stage skeleton block 4, and the second stage skeleton block 4 is fitted. Positioning is performed so that the support side fitting portion 42a of the support 42 of the skeleton block 4 is fitted to the base side fitting portion 43 of the first stage skeleton block 4, and the second stage skeleton block 4 is set to the first stage. Is placed on the skeleton block 4.
In FIG. 2, the right skeleton block 4 shows the skeleton block 4 forming the second stage, and is a plane showing the state where the support 42 side is turned up before being placed on the first stage skeleton block 4. FIG. The second stage skeleton block 4 is mounted upside down on the first stage skeleton block 4 upside down as indicated by the arrows.

  Fig.3 (a) is a longitudinal cross-sectional view which shows an example of the state which laminated | stacked the frame | skeleton block 4 shown in FIG. 2 on the up-down direction. The support 42 of the skeleton block 4 of this embodiment is a truncated conical tapered column having a taper angle θ of 2 to 4 ° from the base 41 toward the tip, and the tip of the support 42 is a support-side fitting portion 42a. It has become. In this embodiment, the tip of the support 42 is used as it is as the support-side fitting portion 42a. However, another support-side fitting portion 42a may be formed at the tip of the support 42. In practice, in order to make the skeleton block 4 lighter and easy to carry, and taking into consideration mechanical strength, the square base 41 has a plurality of ribs on the frame body in the vertical, horizontal, diagonal, etc. It is shaped like a grid.

The inside of the support 42 may be hollow or a double cylinder. These variations are within the scope of the skeleton block 4 of the present invention. Incidentally, the skeleton block 4 is generally formed by injection molding a resin such as polypropylene so that the skeleton block 4 is low in cost, lighter in weight and easy to carry and assemble.
In FIG. 3, reference numeral 41 a indicates a connection protrusion that connects bases 41 stacked in the vertical direction, and reference numeral 41 b indicates a connection hole in which the connection protrusion 41 a is fitted. Incidentally, FIG.3 (b) has shown the top view which looked at the base 41 of the frame | skeleton block 4 from the downward direction.

FIG. 4 shows another embodiment of the skeleton block 4 in which the second-stage skeleton block 4 can be arranged opposite to the first-stage skeleton block 4 and assembled as in the skeleton block 4 of FIG. Yes.
2 is different from that shown in FIG. 2 in that there is one support 42 and one base-side fitting portion 43 on both diagonal lines, and as shown in FIG. The point is that the portion 43 is formed by one piece on one side. The positions of the support members 42 and the base-side fitting portion 43 are both (1/4) from the center 45 of the base 41 when the length of the diagonal line is 1 as in the case shown in FIG. It is formed at the position.

FIG. 5 shows still another embodiment of the skeleton block 4. In this embodiment as well, the right side skeleton block 4 can be inverted according to the arrow to the first stage skeleton block 4 on the left side, and the supports 42 can be arranged to face each other.
Incidentally, the only difference from the skeleton block 4 shown in FIG. 2 is that the outline of the skeleton block 4 shown in FIG. 2 is square, whereas the skeleton block 4 shown in FIG. 5 is substantially rectangular. .

In any case, for example, what is shown in FIGS. 2 and 5 is that the support 42 (support side) is located on one diagonal line of the base 41 with the center 45 of the base 41 sandwiched therebetween and at an equidistant position from the center 45. A fitting portion 42a), the center 45 of the base 41 is sandwiched on the other diagonal line, and the base side fitting is carried out at a distance equal to the distance from the center 45 to the support 42 (support side fitting portion 42a). It has a joint part 43.
4 shows a support 42 (support body side fitting portion 42a) on one diagonal line of the base 41 of the skeleton block 4 with the center 45 of the base 41 sandwiched therebetween and at an equal distance from the center 45. ) And a base-side fitting portion 43, and a support body 42 (support-side fitting portion) provided on the other diagonal line with the center 45 of the base 41 sandwiched therebetween and on the one diagonal line. 42a) and the base side fitting part 43, it has the support body side fitting part 42a and the base side fitting part 43 so that it may become line symmetrical. Here, the symmetrical axis of symmetry is a line passing through the center 45 of the base 41 and the center between the supports 42.

Up to this point, only the example in which the skeleton blocks 4 are simply stacked one above the other as shown in FIG. 1 has been described. However, these skeleton blocks 4 can also be arranged in a staggered manner as shown in FIG.
This will be specifically described below. First, four pairs of the skeleton blocks 4 shown in FIG. 2 are provided, and two pairs of straight lines connecting the centers 45 of the skeleton blocks 4 adjacent to each other so that the support 42 faces upward, the outer shape of the skeleton block 4, that is, this In the example, they are arranged in a plane in the same direction so as to form a square, adjacent to each other. In this state, the skeleton blocks 4 having the same shape as the arranged skeleton blocks 4 are arranged so as to equally lie on the four adjacent corners of the four skeleton blocks 4 (portions surrounded by a chain line in FIG. 6). It is placed in a state where it faces four skeleton blocks 4. The support-side fitting portion 42a at the tip of the support 42 of the opposed skeleton block 4 (the skeleton block 4 depicted on the right side in FIG. 6) is surrounded by the opposite counterpart, that is, the one-dot chain line on the left side in FIG. It is made to fit in each base side fitting part 43 which exists in the four corners which each skeleton block 4 in the range which has the same. At the same time, the base-side fitting part 43 is fitted with the support-side fitting part 42a at the tip of the support 42 within the range of the one-dot chain line.

  In this way, the skeleton block 4 shown in FIG. 2 can be stacked so that the outlines of the skeleton blocks 4 overlap in the vertical direction shown in FIG. 1, or a zigzag arrangement as shown in FIG. 6 is also possible. It is. When the zigzag arrangement is performed, a connecting member that specially prepares the same layer constituting the space holding skeleton block structure 5 shown in FIG. 16, that is, the skeleton blocks 4 arranged on the same plane, is used. Can be linked together. Therefore, the assembly of the space holding skeleton block structure 5 by the skeleton block 4 becomes extremely easy, and the space holding skeleton block structure 5 itself can also improve its mechanical strength.

Similarly, even if the skeleton block 4 shown in FIG. 4 is used, the space holding skeleton block structure 5 can be configured by staggered arrangement as shown in FIG.
Also in the structure shown in FIG. 7, first, two pairs of four skeleton blocks 4 are connected to each other so that the support body 42 (support body side fitting portion 42a) faces upward and connects the centers 45 of the skeleton blocks 4 adjacent to each other. Are arranged adjacent to each other in the same direction so as to form an outer shape of the skeleton block 4, that is, a square.
The four skeleton blocks 4 having the same shape as the skeleton blocks 4 arranged side by side are equally divided over the four adjacent corners (portions surrounded by the one-dot chain line) of each of the four skeleton blocks 4 in this state. In a state where it is opposed to the skeleton block 4, it is reversed and placed as indicated by the arrow.

  Also in this example, the base side of each skeleton block 4 within a range in which the support-side fitting portion 42a of the support 42 of the skeleton block 4 depicted on the right side of FIG. The base side fitting part 43 is fitted. On the other hand, the support-side fitting portion 42a at the tip of the support 42 within the range surrounded by the alternate long and short dash line is fitted to the base-side fitting portion 43 of the skeleton block 4 on which it is placed.

Further, the skeleton block 4 as shown in FIG. 8 can be similarly assembled in a staggered arrangement. Similarly to the skeleton block 4 shown in FIG. 2, the skeleton block 4 has a shape that coincides with the shape before the rotation when the skeleton block 4 is rotated by 180 ° around the center 45. Specifically, the planar shape is square, and the support bodies 42 are arranged on one diagonal line, and the base-side fitting parts 43 are arranged on the other diagonal line at equal intervals.
In other words, the one shown in FIG. 8 also has the center 45 of the base 41 sandwiched on one diagonal line of the base 41 of the skeleton block 4 in the same manner as shown in FIG. The support body 42 (support body side fitting portion 42a) is equidistant from the center 45, the center 45 of the base 41 is sandwiched on the other diagonal, and the support body 42 (support body side fitting) The base side fitting part 43 is provided at a distance equal to the distance to the part 42a).

When four skeleton blocks 4 are connected and the centers 45 of the adjacent skeleton blocks 4 are connected with the support 42 facing upward as in FIGS. 6 and 7, the two pairs of straight lines are square. Adjacent to each other so as to form (indicated by a one-dot chain line). Then, the skeleton block 4 drawn on the right side in FIG. 8, that is, the same shape as the skeleton block 4 on the left side, is supported by the four skeleton blocks 4 so as to evenly span the four corners adjacent to each other. Cover with 42 facing down. As a result, the support-side fitting portion 42a of the covered skeleton block 4 is fitted to the base-side fitting portion 43 within the range indicated by the alternate long and short dash line, and its own base-side fitting portion 43 is The other support 42 is fitted into the support-side fitting portion 42a.
In this embodiment as well, the upper skeleton blocks 4 can be spread while connecting the skeleton blocks 4 arranged adjacent to each other in the lower layer, and it is not necessary to prepare a connection member separately.

Further, in FIG. 9, the fitting holes 43, the support bodies 42, the support bodies 42, and the fitting holes 43 are arranged in this order at equal intervals on the diagonal line of the skeleton block 4 whose outer shape of the base 41 is a square. Yes.
More specifically, on one diagonal line of the base 41 of the skeleton block 4, the support-side fitting portion 42 a is fitted to the base 45 at a position far from the center 45 and closer to the center 45. Similarly, on the other diagonal line, the support part-side fitting part 42a provided on the one diagonal line with the center 45 of the base 41 interposed therebetween, and the joint part 43 at a point-symmetrical position. A support-side fitting portion 42 a and a base-side fitting portion 43 are provided so as to be line-symmetric with the base-side fitting portion 43. The line symmetry axis here refers to a line passing through the center 45 of the base 41 and the center between the left and right supports 42.

Also in this embodiment, when the centers 45 of the adjacent skeleton blocks 4 are connected with the support 42 facing upward, two pairs of straight lines are squares that are the outlines of the skeleton blocks 4 (indicated by alternate long and short dash lines). ) Are arranged adjacent to each other so as to form the same shape as the skeleton block 4 drawn on the right side, that is, the skeleton block 4 on the left side so as to equally lie on the four corners adjacent to each other. Cover with the support 42 facing downward.
If it does in this way, the support body 42 (support body side fitting part 42a) of one frame | skeleton block 4 will be fitted by the base side fitting part 43 in the range shown with the dashed-dotted line, and the side of the covering side is covered. The base side fitting part 43 of the skeleton block 4 is fitted to the mating support side fitting part 42a.
The thing of this Example can also connect each adjacent frame | skeleton block 4 without using a connection member, and can assemble the space holding | maintenance frame | skeleton block structure 5 easily.

  In the case of the skeleton block 4 shown in FIG. 9, assembling in a staggered arrangement is possible, but as shown in FIG. 1, the upper skeleton block 4 has the same outline as the lower skeleton block 4. Cannot be stacked. This is because, as can be seen from the figure, when the pair of skeleton blocks 4 are opposed to each other, the support 42 and the support 42 collide with each other. As shown in FIG. 1, even if a staggered arrangement is possible with any of the four straight lines that pass through the center 45 of the skeleton block 4 and are orthogonal to the sides, the axis is symmetrical. It cannot be assembled.

FIG. 10 is a perspective view showing a state where one second-layer skeleton block 4 is assembled in a zigzag arrangement on the lower four skeleton blocks 4 as described in FIGS.
In practice, more skeleton blocks 4 are assembled around these skeleton blocks 4 while being adjacent to each other. Incidentally, the skeleton block 4 forming the second layer in FIG. 10 is assembled in a staggered arrangement with respect to the first skeleton block 4 to form the entire second layer. In each of the above-described embodiments, the support 42 and the base-side fitting portion 43 are between the supports 42 and 42, between the base-side fitting portions 43 and 43, or between the support 42 and the base-side fitting. Only the support 42 or the base-side fitting portion 43 arranged on the diagonal line has been described so that the distance between the portions 43 can be increased, but there are other arrangement methods. For example, in the case where the base 41 is a square, the support 42 or the base 42 is located at the same distance between the center 45 on two lines perpendicular to each other and passing through the center 45 of the square. The side fitting portion 43 may be formed. Two such skeleton blocks 4 and the supports 42 are opposed to each other so that the support side fitting portion 42a of one skeleton block 4 is fitted to the base side fitting portion 43 of the other skeleton block 4. If necessary, for example, it is rotated 90 ° and incorporated.

All of the bases 41 of the skeleton blocks 4 of the embodiments described above have a square or rectangular outer shape. Therefore, when a large number of skeleton blocks 4 are arranged adjacent to each other in order to form the space holding skeleton block structure 5, the linear frame portions of the base 41 can be assembled while being in contact with each other. Therefore, the assembling work between the skeleton blocks 4 becomes extremely easy.
However, the skeleton block 4 is not limited to a square or rectangular outer shape of the base 41. For example, the base 41 may have a cross shape like the skeleton block 4 shown in FIG. Other than this, for example, a regular polygon having a square shape or more may be used. If it is a regular polygon, a regular hexagon that allows the bases to be continuously arranged with no gap is preferred. In particular, if a square or rectangular shape is used, it is possible to increase the efficiency of transportation by a truck or the like. Further, whether the outer shape of the base 41 is a square or a rectangle, or a rectangle other than that shown in FIG. What is necessary is just to consider and consider various conditions, such as the installation location and shape of water storage facilities, such as rainwater, the load capacity required, and the ease of an assembly.

Also, as shown in FIG. 12A, the shape of the support 42 is hollowed in order to make the skeleton block 4 lightweight so that the tip of the tapered column is fitted to the base side as a fitting hole. It is good also as the support body side fitting part 42a fitted to the joint part 43, and as shown in (b), the protrusion side support side fitting part 42a is separately provided in the front-end | tip part of the support body 42, and base side fitting is carried out. You may make it fit in the part 43. FIG. Of course, the support body side fitting portion 42a can be a fitting hole, that is, a fitting receiving portion, and the base side fitting portion 43 can be a fitting protrusion. This is also true for all the embodiments described above.
In addition, the shape of the support 42 is not limited to a truncated cone shape as in the embodiment, but may be other shapes such as a truncated pyramid shape.

  By the way, when the taper angle θ of the support 42 is set to 2 to 4 °, the skeleton blocks 4 can be stacked very easily as shown in FIG. Therefore, when the skeleton block 4 is transported, the occupied accumulation can be reduced, so that the transport efficiency (loading efficiency) on the truck or the like can be improved. Further, when the shape is tapered, the support 42 itself has an advantage that it is more difficult to buckle against a load from above.

  Of course, if it is not necessary to make the support 42 of the skeleton block 4 into a truncated cone shape or a truncated pyramid shape as shown in FIG. 12, a cylindrical shape or a corner as shown in FIG. A shape such as a column may be used. Further, as shown in FIG. 14 (b), a protruding support body side fitting portion 42 a may be provided at the tip of the cylindrical support body 42.

By the way, in the present invention, for example, when the outer shape is a square, it means that the outline 50 indicated by the one-dot chain line of the base 41 is a square as shown in FIG.
Further, although not mentioned in each of the above-described embodiments, when the skeleton blocks 4 are arranged adjacent to each other in the horizontal direction on the outer peripheral portion of the base 41 of the skeleton block 4, the projecting outer peripheral fitting portion 50 a and this You may provide the outer periphery fitting receiving part 50b in which the outer periphery fitting part 50a fits. In this way, even if the skeleton blocks 4 are not arranged in a staggered manner as shown in FIGS. 6 to 9, the bases 41 of the adjacent skeleton blocks 4 can be connected without preparing a special connecting member. can do. As a result, the mechanical strength of the space holding skeleton block structure 5 can be improved, and the assembling work is facilitated. Of course, when combined with the staggered arrangement, the mechanical strength of the space holding skeleton block structure 5 can be further increased.

  In any case, the skeleton block 4 of each of the embodiments described above is not a container shape as in the prior art, but is simply composed of a flat base 41 and several supports 42. Therefore, when the inside is viewed from an arbitrary position of a water storage facility such as rainwater having the space holding skeleton block structure 5 constituted by such a skeleton block 4, there are far more obstacles that disturb the sight than the container type. Very few. Therefore, it is very easy to grasp the sediment accumulation state in the space holding skeleton block structure 5 from the inside during periodic inspections.

In addition, when transporting or assembling the skeleton block 4, it is necessary to turn the hand to a thick container portion in the conventional container type and, in some cases, block the front field of view with the skeleton block 4. On the other hand, in the case of the skeleton block 4 of the present invention, the carrier 42 having a thinner outer diameter than that of the container type or the frame 41 of the base 41 that is relatively thin and easy to grip is carried or assembled. can do. Therefore, the assembly workability can be greatly improved.
In addition, since the outer shape can be made square or rectangular, there is an advantage that the loading efficiency can be improved when transporting by truck or the like.

  Further, as shown in FIGS. 6 to 11, if the skeleton blocks 4 are arranged in a staggered manner, the skeleton blocks 4 can be connected to each other at the same time. Therefore, there is an advantage that it is not necessary to prepare a special connection member. Moreover, the mechanical strength of the space holding skeleton block structure 5 can be improved.

  As described above, according to the present invention, the inside of the space-holding skeleton block structure has a good view during the periodic sedimentation amount confirmation inspection of the space-holding skeleton block structure configured by assembling the skeleton block. A skeletal block that is easily visually inspected, etc., and has excellent workability during transportation and assembly by an operator, or a space retaining skeleton block structure in which a plurality of these are assembled, and these skeleton blocks and space retaining skeleton block structures It is possible to provide water storage facilities such as rainwater.

DESCRIPTION OF SYMBOLS 1 Ground 2 Cavity 3 Lining layer 4 Skeletal block 5 Space holding skeleton block structure 9 Covering layer 10 Inlet 11 Outlet 41 Base 42 Support 42a Support side fitting part 43 Base side fitting part 50a Outer periphery fitting Joint part 50b Outer peripheral fitting receiving part

Claims (8)

A digging hole provided by digging down the ground and having an open top, a space-holding skeleton block structure configured by assembling a plurality of resin skeleton blocks disposed in the digging hole, and an upper part of the digging hole the assembly structure of the skeleton blocks to be used for water storage facility rain water and a coating layer covering the opening,
The skeleton block includes a flat base, a support integrally provided on one surface of the base and having a support-side fitting portion at a tip, and the base on the side where the support is provided A base-side fitting portion that is provided on a base surface and can be fitted to the support-side fitting portion, and when the base surfaces on which the support body is erected are opposed to each other, assembly structure of the support side fitting portion and the other of the water storage facilities for skeletal block rain water, characterized in that fitted to the base-side fitting portion of the backbone block of one skeleton block. The skeleton block assembly structure for a rainwater storage facility according to claim 1, wherein the support has a truncated cone shape. One of the support-side fitting portion and the base-side fitting portion of the skeleton block is a fitting protrusion, and the other is a fitting hole that fits into the fitting protrusion. 1 or assembly structure of water storage facilities for skeletal block rain water according to claim 2, wherein. The skeleton block has an outer periphery fitting portion and an outer periphery fitting receiving portion on an outer peripheral portion of the base, and when the skeleton blocks are arranged adjacent to each other in the horizontal and vertical directions, the outer periphery fitting of one skeleton block is performed. assembly structure of water storage facilities for skeletal block rain water according to any one of claims 1 to 3, engaging portion is characterized in that it respectively fitted to the outer peripheral fit receiving portion of the other adjacent backbone blocks. The four skeleton blocks are arranged in a plane so as to be adjacent to each other so that the support faces the same direction, and skeleton blocks having the same shape as the skeleton blocks are arranged at four adjacent corners of the four skeleton blocks. Each of the four skeletal blocks so as to face each other, and the support side fitting portions of the opposed skeleton blocks are fitted to the opposite side skeletal block base side fitting portions, respectively. The assembly structure of the skeleton block for rainwater storage facilities according to any one of claims 1 to 4, wherein the structure is combined . A rainwater storage facility constructed by assembling a plurality of assembly structures of the skeleton block according to any one of claims 1 to 5 in a horizontal direction and a vertical direction . A flat base, a support integrally provided on one surface of the base and having a support-side fitting portion at a tip, and the base surface provided on the side where the support is provided A skeleton block for a rainwater storage facility, comprising a base-side fitting portion into which the support-side fitting portion can be fitted . A method for constructing an assembly structure of a skeleton block for a rainwater storage facility according to claim 1,
The skeleton block includes a flat base, a support integrally provided on one surface of the base and having a support-side fitting portion at a tip, and the base on the side where the support is provided It has a base side fitting part that is provided on a base surface and can be fitted with the support side fitting part,
A pair of the skeleton blocks are installed such that a base surface on which the support of one skeleton block is erected and a base surface on which the other skeleton block is erected are opposed to each other. The support side fitting portion of the block is fitted to the base side fitting portion of the other skeleton block, and the support side fitting portion of the other skeleton block is fitted to the base side fitting of the one skeleton block. A method for constructing an assembly structure of a skeleton block characterized by being fitted to a part .

Images