JP6017075B1 - Skeleton block - Google Patents

Abstract

Disclosed is a skeleton block which is installed in a water storage space, and is adjacent to each other in the horizontal direction and stacked in the vertical direction to form a skeleton block structure, which has high horizontal strength. It is in. The skeleton block 10 includes a flat base 20. The base 20 is composed of a plurality of supporting bone portions (the outer peripheral frame 21 and the ribs 22) that are integrally connected to each other. In a space between a plurality of supporting bones (the outer peripheral frame 21 and the ribs 22) constituting the base 20, a location where the upper reinforcing plate 23 is flush with the upper surface of the base 20, and the lower surface of the base 20 And a portion where the lower reinforcing plate 24 is formed are adjacent to each other. Therefore, compared with the form in which only the lower reinforcing plate 24 is formed, the strength of the base 20 as a three-dimensional structure is increased, and the skeleton block 10 having high horizontal strength is provided. [Selection] Figure 2

Description

  The present invention relates to a storage facility for storing rainwater to be used for fire prevention, sprinkling, flood prevention, etc. in buildings or apartment houses, especially housing estates, schools, hospitals, etc., or temporarily storing precipitation. It relates to a skeleton block used in a permeation facility that is stored in a facility and permeated little by little.

  Nowadays, land cover due to urbanization has caused a significant decline in rainwater infiltration capacity, resulting in frequent flooding and inundation of roads. Newly developed areas are increasingly taking measures against rainwater spills. Yes. Conventionally, a skeleton block installed in a water storage space constituting a water storage facility for storing river water, rainwater, or the like in the ground is known. Usually, this skeleton block is used to form a skeleton block structure in which a plurality of skeleton blocks are arranged adjacently in the horizontal direction and stacked in the vertical direction. This skeleton block structure is installed in the water storage space (see, for example, Patent Document 1).

  In such a water storage space, it is necessary to ensure strength to cope with earth pressure and water pressure received from the surroundings. As described above, by installing the skeleton block structure in the water storage space, earth pressure and water pressure received from the surroundings can be received by the skeleton block structure. As a result, the strength of the water storage space is increased mainly against earth pressure and water pressure in the horizontal direction. In the present specification, “strength” refers to resistance to deformation or destruction (difficulty to be deformed, difficult to break).

JP 2008-38457 A

  The skeletal block described in the above document is composed of a plurality of support bones that are integrally connected to each other, and includes a flat base having an upper surface and a lower surface. Specifically, the plurality of supporting bone portions are an outer peripheral frame and a plurality of ribs formed integrally with the outer peripheral frame in an inner space of the outer peripheral frame.

  In order to increase the strength in the horizontal direction of the skeletal block including such a base, the inventor has an adjacent support bone at a position on the lower surface side in the thickness direction of the base in the space between the adjacent support bones. It has already been considered to provide a reinforcing plate extending in the direction along the lower surface.

  Depending on the installation environment of the water storage and penetration facility, it is necessary to install the facility in a narrow range. In this case, it is necessary to increase the depth of the storage part of the water storage and penetration facility. When the reservoir is deepened, the earth pressure and water pressure from the surroundings to the skeleton block increase. From the viewpoint of securing and improving the strength of the water storage space against earth pressure and water pressure, increasing the horizontal strength of the skeleton block as much as possible is a major issue.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a skeleton block having high horizontal strength.

  In order to achieve the above-described object, the skeleton block according to the present invention is characterized by the following (1) to (3).

(1)
A skeletal block that is installed in a water storage space that constitutes a water storage and penetration facility, forms a skeleton block structure by being arranged adjacent to each other in the horizontal direction and stacked in a vertical direction,
The skeleton block is constituted by a plurality of support bone parts integrally connected to each other, and includes a flat base having an upper surface and a lower surface,
In the base,
In the space between the first support bone portion and the second support bone portion adjacent to each other among the plurality of support bone portions, the first and second portions are positioned at the upper surface side in the thickness direction of the base. An upper reinforcing plate is integrally formed extending from the supporting bone portion in the direction along the upper surface,
A space between the third support bone portion and the third support bone portion located on the opposite side of the first support bone portion with respect to the second support bone portion among the plurality of support bone portions. A lower reinforcing plate extending in a direction along the lower surface from the second and third support bones is formed at a position on the lower surface side in the thickness direction in
The lower reinforcing plate, the second supporting bone portion, and the upper reinforcing plate form a part of the base in a continuous manner.

(2)
In the skeleton block according to (1) above,
The base is erected from the upper surface, and a frustum-shaped support body is formed in which a tip is inserted into a fitting hole formed in the base of another skeleton block.
Each of the first and second support bone portions is a support bone portion having a shape surrounding the base portion of the support body among the plurality of support bone portions,
The upper reinforcing plate is formed in an annular region surrounded by the first and second support bones.

(3)
In the skeleton block according to (1) or (2) above,
The base is formed in a square shape,
The base is erected from the upper surface, and two frustum-shaped supports are formed in which the tip is inserted into a fitting hole formed on the upper surface of the base of another skeleton block.
On the upper surface of the base, two fitting holes into which the tip of the support formed on the base of another skeleton block is inserted are formed,
Each of the first and second support bone portions is a pair of the plurality of support bone portions with the positions corresponding to two parallel sides constituting the outer periphery of the base as both ends. A supporting bone extending parallel to the two sides of
The upper reinforcing plate is formed in an elongated rectangular region surrounded by the first and second supporting bones.

  According to the skeleton block having the configuration of (1) above, the portion where the lower reinforcing plate is formed and the portion where the upper reinforcing plate are formed are adjacent to each other in the space between the plurality of supporting bone portions constituting the base. Mixed. Therefore, the strength of the base as a three-dimensional structure is increased as compared with the form in which only the lower reinforcing plate is formed. As a result, a skeleton block having a high strength in the horizontal direction is provided as compared with the embodiment in which only the lower reinforcing plate is formed.

  According to the skeleton block having the configuration (2), the upper reinforcing plate is formed in the annular region surrounding the base of the frustum-shaped support formed on the upper surface side of the base, and the regions other than the annular region are formed. A lower reinforcing plate may be formed in a space between the plurality of supporting bone portions. Therefore, in particular, the strength of the base against an external force in any horizontal direction acting on the support can be increased.

  According to the skeleton block having the configuration (3) above, the upper reinforcing plate is formed in an elongated rectangular region surrounded by two parallel so-called “through ribs”, and a plurality of regions constituting the region other than the rectangular region are formed. A lower reinforcing plate may be formed in the space between the supporting bone portions. Generally, in the three-dimensional structure, the strength of the portion where the “through rib” is formed is increased. Therefore, in this configuration, the strength of a portion having a relatively high strength on the base can be further increased.

  ADVANTAGE OF THE INVENTION According to this invention, the frame | skeleton block with the high intensity | strength of the horizontal direction of a water storage penetration facility can be provided.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a schematic configuration diagram illustrating a water storage and infiltration facility in which a skeleton block structure configured using a skeleton block according to an embodiment of the present invention is arranged. FIG. 2 is a perspective view of the skeleton block according to the embodiment of the present invention. FIG. 3 is a plan view of the skeleton block shown in FIG. FIG. 4 is a view corresponding to FIG. 3 in which the region where the upper reinforcing plate is provided is emphasized. 5 is a cross-sectional view taken along the line 5-5 in FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG.

  Specific embodiments relating to the present invention will be described below with reference to the drawings.

(Example of water storage and penetration facility)
First, before explaining the details of the skeleton block 10, an example of a water storage and infiltration facility in which a skeleton block structure configured using the skeleton block 10 is arranged will be briefly described with reference to FIG.

  As shown in FIG. 1, in this water storage and penetration facility, a water storage space is formed by covering the inner surface of a concave portion having a rectangular shape or a square shape, for example, formed by digging down the ground 1 with a lining layer 2. The As the lining layer 2, a water-impervious sheet or a semi-permeable sheet, or a multiple sheet obtained by combining these sheets, a nonwoven fabric, a waterproof sheet, gravel, concrete or the like can be used. An inflow passage 3 and an outflow passage 4 for rainwater and the like are connected to the water storage space.

  In the water storage space, a plurality of skeleton blocks 10 are arranged adjacent to each other in the horizontal direction and stacked in the vertical direction, whereby a skeleton block structure including the plurality of skeleton blocks 10 is installed in the water storage space. Then, a cover part is installed in the upper opening of the water storage space in which the skeleton block structure is installed, and the outer peripheral part 5 is formed.

  As shown in FIG. 1, in the case of a skeleton block structure using a skeleton block 10, the upper and lower skeleton blocks 10 obtained by assembling the upper skeleton block 10 upside down on the lower skeleton block 10. These aggregates constitute one layer of the skeleton block structure. Accordingly, in the example shown in FIG. 1, a six-layer skeleton block structure is shown.

(Overall structure of skeleton block)
Next, the overall configuration of the skeleton block 10 will be described with reference to FIGS. 2 and 3.

  As shown in FIGS. 2 and 3, the skeleton block 10 includes a flat base 20 having a square shape in plan and having an upper surface and a lower surface parallel to each other. The base 20 includes an outer peripheral frame 21 that forms a square outer frame of the base 20, and a plurality of ribs 22 that are integrally connected to the outer peripheral frame 21 in an inner space of the outer peripheral frame 21. .

  The upper surface of the base 20 is configured by the upper surface of the outer peripheral frame 21 and the upper surfaces of the plurality of ribs 22, and the lower surface of the base 20 is configured by the lower surface of the outer peripheral frame 21 and the lower surfaces of the plurality of ribs 22. Here, the outer peripheral frame 21 and the plurality of ribs 22 correspond to “a plurality of supporting bone portions” of the present invention. Details of the outer peripheral frame 21 and the plurality of ribs 22 constituting the base 20 will be described later.

  The base 20 is formed with two conical support bodies 30 having a truncated cone shape that is erected from the upper surface thereof and has a smaller diameter toward the tip. Two identical fitting holes 40 are formed on the upper surface of the base 20.

  In plan view, the center of each of the two supports 30 is located on one of the pair of diagonal lines of a square (hereinafter referred to as “peripheral square”) that is the outer peripheral shape of the base 20, and 2 The center of each of the two fitting holes 40 is located on the other diagonal line of the pair of diagonal lines of the outer peripheral square. In plan view, the two support bodies 30 and the two fitting holes 40 are “a quadrangle with two centers of the two support bodies 30 and two centers of the two fitting holes 40 as four corners”. Are arranged so as to be “a square obtained by reducing the outer peripheral square by a factor of 0.5”.

  The upper skeleton block 10 upside down is brought close to the lower skeleton block 10, the support 30 of the upper skeleton block 10 is inserted into the fitting hole 40 of the lower skeleton block 10, and the upper skeleton block By inserting the support 30 of the lower skeleton block 10 into the ten fitting holes 40, the upper and lower skeleton blocks 10 can be connected and fixed to each other.

  There are mainly the following two methods as a method of constructing “an assembly of the upper and lower two-stage skeleton blocks 10”. First, there is a technique in which each upper skeleton block 10 that is turned upside down is connected and fixed to a corresponding one of the lower skeleton blocks 10 arranged vertically and horizontally in the horizontal direction. Second, there is a method of connecting and fixing each of the upper skeleton blocks 10 upside down with the corresponding four skeleton blocks 10 arranged in the horizontal direction vertically and horizontally (so-called “staggered arrangement”). . In this case, it is possible to omit means for connecting and fixing the skeleton blocks 10 adjacent in the horizontal direction. FIG. 1 shows a six-layer skeleton block structure in which “an assembly of two upper and lower skeleton blocks 10” (= 1 layer) formed by the first method is stacked.

  The connection / fixation between the “skeleton blocks 10” arranged adjacent to each other in the horizontal direction and the connection / fixation between “aggregates of the upper and lower two-stage frame blocks 10” stacked in the vertical direction are, for example, predetermined And a fitting projection provided on one of the connecting surfaces connected to each other and a fitting recess provided on the other can be achieved.

(Detailed structure of the base of the skeleton block)
Next, a detailed configuration of the base 20 of the skeleton block 10 will be described with reference to FIGS.

  As described above, the base 20 includes the outer peripheral frame 21 and the plurality of ribs 22 that are integrally connected to the outer peripheral frame 21. The cross-sectional shapes of the outer peripheral frame 21 and the plurality of ribs 22 in the direction perpendicular to the extending direction are elongated shapes (typically rectangular) extending in the vertical direction.

  As shown in FIGS. 2 and 3, the plurality of ribs 22 are generally formed symmetrically with respect to each of a pair of diagonal lines of the outer peripheral square in plan view. Further, most of the plurality of ribs 22 are ribs (so-called “through ribs”) linearly extending in parallel with the other two sets of sides with the positions corresponding to the two sets of parallel sides of the outer peripheral square as both ends. ).

  Hereinafter, among the plurality of ribs 22, in particular, the 16 ribs (through ribs) 22a shown in FIGS. 2 and 3 (8 extending in the vertical direction and 8 extending in the horizontal direction in FIG. 3). Pay attention. Further, among the 16 ribs 22a, attention is particularly paid to four portions surrounding the base portion of the support 30 or the fitting hole 40 in a square shape, as shown by a thick solid line in FIG. Each of these four parts defines a square annular region.

  In the example shown in FIGS. 2 to 4, a large number of adjacent support bone portions defined and formed by the plurality of support bone portions (the outer peripheral frame 21 + the plurality of ribs 22 (22 a)) constituting the base 20. Of the spaces, the upper reinforcing plate 23 is provided on the upper surface side of the base 20 only for the spaces corresponding to the four annular regions, and the lower reinforcing plate is provided on the lower surface side of the base 20 for all the remaining spaces. 24 is provided (see FIG. 2).

  For example, regarding the two through ribs 22a extending up and down on the leftmost side in FIG. 4, as shown in FIG. 5 showing a 5-5 cross section of FIG. 4, an upper reinforcing plate 23 is provided in the space corresponding to the annular region. As shown in FIG. 6 showing a 6-6 cross section of FIG. 4, a lower reinforcing plate 24 is provided in a space not corresponding to the annular region.

  In this example, as shown in FIG. 5, the upper reinforcing plate 23 extends integrally from the upper end of the adjacent support bone portion along the upper surface 20 a (that is, to be flush with the upper surface 20 a of the base 20). As shown in FIG. 6, the lower reinforcing plate 24 is integrally formed along the lower surface 20b from the lower end of the adjacent supporting bone portion (that is, so as to be flush with the lower surface 20b of the base 20). It is extended.

  The upper reinforcing plate 23 is stepped along the upper surface 20a from the position slightly below the upper end of the adjacent support bone portion (position on the upper surface side in the thickness direction) (that is, the upper surface 20a of the base 20). May extend). The lower reinforcing plate 24 forms a step with the lower surface 20b (that is, the lower surface 20b of the base 20) from a position slightly above the lower end of the adjacent supporting bone portion (position on the lower surface side in the thickness direction). ) May be extended. Further, both the upper reinforcing plate 23 and the lower reinforcing plate 24 may extend over the entire corresponding space (that is, the corresponding space may be completely closed), or the entire corresponding space. (That is, a part of the corresponding space may penetrate in the vertical direction).

  In this example, for example, when referring to the two through ribs 22a extending up and down on the leftmost side in FIG. 4 described above, an “elongated square region” surrounded by the entire two through ribs 22a ( In a space corresponding to a vertically long rectangular region extending to both upper and lower ends in FIG. 4, a portion where the upper reinforcing plate 23 is provided (that is, a portion corresponding to the annular region) and a portion where the lower reinforcing plate 24 is provided ( That is, it can be said that a portion not corresponding to the annular region is mixed.

  As described above, for example, regarding the 5-5 cross section of FIG. 4, the right rib 22a and the left rib 22a of the two through ribs 22a included in the 5-5 cross section are each the “first support” of the present invention. The outer peripheral frame 21 corresponding to the “bone portion” and the “second supporting bone portion” and located further to the left of the left rib 22a (not included in the section 5-5) is the “third supporting bone” of the present invention. Part ".

(Action / Effect)
According to the skeleton block according to the embodiment of the present invention, in the space between the plurality of supporting bone portions (the outer peripheral frame 21 + the plurality of ribs 22) constituting the base 20, the upper portion and the portion where the lower reinforcing plate 24 is formed. The place where the reinforcing plate 23 is formed is adjacent and mixed. Therefore, compared with the form in which only the lower reinforcing plate 24 is formed, the strength of the base 20 as a three-dimensional structure is increased. As a result, it is possible to provide the skeleton block 10 having a higher horizontal strength than the form in which only the lower reinforcing plate 24 is formed.

  Further, the upper reinforcing plate 23 is formed by the base of the frustum-shaped support body 30 formed on the upper surface side of the base 20 and four annular regions (see FIG. 4) surrounding the fitting hole 40 in a square shape. In addition, a lower reinforcing plate 24 is formed in a space between a plurality of support bone portions that constitute a region other than the annular region. Therefore, in particular, the strength of the base 20 against an external force in any horizontal direction acting on the support 30 and the fitting hole 40 can be increased.

  Further, the upper reinforcing plate 23 is formed in a part of the above-mentioned “elongated rectangular region” surrounded by the two parallel through ribs 22a, and other than the “elongated rectangular region” and the “annular region”. A lower reinforcing plate 24 is formed in a space between the plurality of supporting bone portions constituting the region. Generally, in the three-dimensional structure, the strength of the portion where the “through rib” is formed is increased. Therefore, in this configuration, the strength of the portion having relatively high strength in the base 20 can be further increased.

(Other aspects)
In addition, this invention is not limited to the said embodiment, A various modification can be employ | adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like can be made as appropriate. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  For example, in the above embodiment, the upper reinforcing plate 23 is formed in the entire region of the annular region (see FIG. 4), but the lower reinforcing plate 24 is formed in the annular region (see FIG. 4). May be included. Similarly, in the above-described embodiment, the lower reinforcing plate 24 is formed in the entire space between the plurality of support bones constituting the region other than the annular region, but the region other than the annular region is configured. A portion where the upper reinforcing plate 23 is formed may be included in a space between the plurality of supporting bone portions.

  In the above embodiment, the upper reinforcing plate 23 is formed only in a part of the above-mentioned “elongated rectangular region”. However, the upper reinforcing plate 23 is formed in the entire region of the above-mentioned “elongated rectangular region”. It may be. Further, the upper reinforcing plate 23 may be formed in a wider area instead of “elongated”. An upper reinforcing plate 23 may be formed between the outer peripheral frame 21 and the rib 22.

  In the above embodiment, the cross-sectional shape (in the direction orthogonal to the extending direction) of the plurality of supporting bone portions (the outer peripheral frame 21 and the plurality of ribs 22) is an elongated shape (typically, vertically). However, the cross-sectional shape may be an elongated shape (typically, a tapered shape) extending from the vertical direction.

  Moreover, in the said embodiment, although the support body 30 has a truncated cone shape, the support body 30 may have a truncated cone shape having a square shape or a polygonal shape (number of angles of 5 or more). . Further, the support 30 itself may be omitted. Similarly, the fitting hole 40 itself may not be present.

  Furthermore, in the said embodiment, although the planar shape of the skeleton block 10 is a square, the planar shape of the skeleton block 10 is a rectangle, a polygon (number of angles is 5 or more), a circle, an ellipse, etc. Also good.

10 skeleton block 20 base 20a upper surface 20b lower surface 21 outer frame (supporting bone)
22, 22a rib (support bone)
23 upper reinforcing plate 24 lower reinforcing plate 30 support 40 fitting hole

Claims (3)

A skeletal block that is installed in a water storage space that constitutes a water storage and penetration facility, forms a skeleton block structure by being arranged adjacent to each other in the horizontal direction and stacked in a vertical direction,
The skeleton block is constituted by a plurality of support bone parts integrally connected to each other, and includes a flat base having an upper surface and a lower surface,
In the base,
In the space between the first support bone portion and the second support bone portion adjacent to each other among the plurality of support bone portions, the first and second portions are positioned at the upper surface side in the thickness direction of the base. An upper reinforcing plate is integrally formed extending from the supporting bone portion in the direction along the upper surface,
A space between the third support bone portion and the third support bone portion located on the opposite side of the first support bone portion with respect to the second support bone portion among the plurality of support bone portions. A lower reinforcing plate extending in a direction along the lower surface from the second and third support bones is formed at a position on the lower surface side in the thickness direction in
The lower reinforcing plate, the second support bone portion, and the upper reinforcing plate integrally form a part of the base.
Skeletal block. The base is erected from the upper surface, and a frustum-shaped support body is formed in which a tip is inserted into a fitting hole formed in the base of another skeleton block.
Each of the first and second support bone portions is a support bone portion having a shape surrounding the base portion of the support body among the plurality of support bone portions,
The upper reinforcing plate is formed in an annular region surrounded by the first and second support bones,
The skeleton block according to claim 1. The base is formed in a square shape,
The base is erected from the upper surface, and two frustum-shaped supports are formed in which tips are inserted into fitting holes formed in the base of other skeleton blocks.
On the upper surface of the base, two fitting holes into which the tip of the support formed on the base of another skeleton block is inserted are formed,
Each of the first and second support bone portions is a pair of the plurality of support bone portions with the positions corresponding to two parallel sides constituting the outer periphery of the base as both ends. A supporting bone extending parallel to the two sides of
The upper reinforcing plate is formed in an elongated rectangular region surrounded by the first and second support bones,
The skeleton block according to claim 1.

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