JP3668869B2 - Stacking member for underground water tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an accumulation member for an underground water tank that is arranged in a vertical direction and a horizontal direction in a water reservoir space of the underground water tank and is loaded by being stacked up and down.
[0002]
[Prior art]
Japanese Examined Patent Publication No. 4-26648 discloses an underground water storage tank in which a stacking member is loaded in a water reservoir space. As shown in FIG. 16, the stacking member 1 loaded in the water storage space of the underground water storage tank includes a rectangular bottom plate portion 11, and an inclined side plate that rises from the four side portions of the bottom plate portion 11 in an end-expanded manner. 12 and flanges 13 and 14 provided in a protruding manner on one end edge portion and the other end edge portion in the vertical direction of the inclined side plate 12, respectively, and the bottom plate portion 11 and the inclined side plate 12. A large number of water holes 15 are opened in the area.
[0003]
For example, the stacked form shown in FIG. 15 is adopted as the stacked form when the stacked members 1 are stacked up and down in the water reservoir space of the underground water tank. In the stacked form shown in the figure, two stacked members 1 and 1 stacked one above the other are stacked in the upside down direction. Therefore, when a large number of the stacked members 1 are arranged in the water reservoir space in the vertical direction and the horizontal direction and stacked in the vertical direction, and a coating layer covering the water reservoir space is disposed on the upper part. The load applied to the covering layer is received by an assembly of a large number of the stacked members 1... At that time, the inclined side plates 12 of the stacked members 1 stacked as shown in FIG. 15 resist the load. Acts as follows.
[0004]
[Problems to be solved by the invention]
However, since the inclined side plates 12 of the individual stacked members 1 stacked vertically are inclined in an end-expanded manner as described above, the load applied to the coating layer is a set of a large number of the stacked members 1. When it is received by the body, a large force is applied to the inclined side plate 12 in the end-expanded shape of each stacked member 1 in a direction in which it is expanded (that is, the direction in which the inclined side plate 12 is bent). When the partial crack is generated in the inclined side plate 12, the inclined side plate 12 easily buckles starting from the cracked portion even if the load applied to the inclined side plate 12 is not so large. There is a fear. In particular, when the stacking member 1 is integrally formed of synthetic resin and the inclined side plate 12 is thinned to some extent to reduce the weight of the stacking member 1, buckling is performed as described above. Prone to occur. When the inclined side plate of the stacking member 1 buckles, the influence of the buckling extends over the whole of the many stacking members loaded in the water reservoir space, and is aligned vertically and vertically. There is a problem in that misalignment occurs between a large number of stacked members and the overall arrangement balance of the stacked members tends to be lost, and the underground water storage tank needs to be repaired at an early stage.
[0005]
In addition, as shown in FIG. 17, the uppermost stacking member 1 forming the assembly is placed upside down with the bottom plate portion 11 facing upward, and a covering layer is disposed thereon. Must be set up. However, in such a case, a gap S is inevitably generated between the uppermost stacked members 1 and 1 adjacent in the vertical direction or the horizontal direction. This gap S must be filled in some way, but if a means of filling the gap S with gravel is used, the load applied to the coating layer causes the inclined side plate 12 of the stacked member 1 to pass through the gravel layer. In addition to the bending direction, the inclined side plate 12 is placed in a state where it is extremely easy to buckle, which is not preferable. As another means, when a wedge-shaped member that fills the gap S is provided, when the wedge-shaped member is pressed downward by a load applied to the coating layer, the stacked member is adjacent in the vertical or horizontal direction. This is not preferable because the overall shape of the aggregate tends to collapse in an attempt to increase the distance of 1 and 1.
[0006]
In view of the above problems, the present invention is a stacking member that is loaded into a water reservoir space of an underground water tank, and is not easily buckled by a load applied to a coating layer that covers the water reservoir space. The main purpose is to provide a piled member for underground water tanks that is less likely to lose its overall shape.
[0007]
And this invention provides the pile member for underground water tank which can give a larger space rate compared with the pile member demonstrated in FIG.15 and FIG.16, Furthermore, in FIG.15 and FIG.16. Another object of the present invention is to provide an underground water tank stacking member that is easier to reduce in weight than the stacked member described.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a synthetic resin underground water tank stacking member according to claim 1 of the present invention has four corner portions of a connecting bone formed in a rectangular shape having a longitudinal dimension and a lateral dimension of 30 to 80 cm . Each is a stacked member in which leg pieces of hollow cylinders having a length of 20 to 80 cm and an outer diameter of 2 to 15 cm which are parallel to each other are integrally provided at right angles to the connecting bone, and ribs extending diagonally of the connecting bone are provided. It is provided that a fitting portion is provided at one end of each leg rod, and a fitted portion that can be fitted to the fitting portion is provided at the other end of each leg rod .
[0009]
Such a stacking member for an underground water tank is arranged in the vertical and horizontal directions in the water storage space of the underground water tank and stacked in the vertical direction, with the legs of the upper and lower stacking members being vertically connected to each other. It is loaded into the water reservoir space. And the coating layer is provided in the upper part of the loaded stacking member. When a person walks or a car runs on the covering layer of the underground water tank constructed in this way, the load applied to the covering layer at that time is in the direction of compressing the leg rod of each stacked member in the vertical direction. It acts mainly and does not apply so much force in the direction of bending its leg. Therefore, there is almost no possibility that the stacked member buckles at the leg. In addition, since the connecting bones of the adjacent stacking members are in contact with each other and are not easily displaced in the vertical direction or the horizontal direction, the shape of the entire stacking member loaded in the water reservoir space is hardly lost.
[0010]
In addition, since this stacking member has a frame structure consisting of a connecting bone formed in a square shape and four leg rods, the space ratio when loaded into the water reservoir space is large, as described above. Can store water. In addition, since the stacked member has the above-described framework structure, it is easy to achieve weight reduction.
[0011]
In addition, it is preferable to attach the cover body which consists of a plate-shaped frame to the upper end of the leg rod which stands up from the connection bone | frame of the uppermost stacking member loaded in the water reservoir space, and to provide the said coating layer on it. If it does in this way, since a space | gap is not formed between the uppermost stacked members, a stacked member is not expanded by the load added to a coating layer.
[0014]
In the underground water tank stacking member according to the first aspect, a fitting portion is provided at one end of each leg rod, and a fitted portion that can be fitted to the fitting portion is provided at the other end of each leg rod. Therefore, when stacking up and down, the upper and lower stacked members are fitted by fitting the fitted portion of each leg rod of the other stacked member to the fitting portion of each leg rod of the upper or lower stacked member The leg can be securely connected vertically so that the leg does not slip or come off.
[0016]
Moreover, as the members stacked for underground water storage tank according to the claim 1, when each Ashi杆is a hollow tube, a large bending strength with each leg lever is applied, it becomes its buckling hardly more occurs, It is easier to reduce the weight.
[0018]
Further, in the stacked member according to claim 1, when the reinforcing bracket is integrally provided between each leg rod and the connecting bone, the joint portion between the leg rod and the connecting bone is reinforced by the reinforcing bracket. As a result, it is difficult for the toe to be broken at the base, or for the perpendicularity between the toe and the connecting bone to be impaired.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
[0021]
FIG. 1 is a longitudinal sectional view schematically showing an underground water tank constructed using the underground water reservoir stacking member of the present invention, and FIG. 2 is an oblique view of the underground water tank stacking member according to an embodiment of the present invention. Fig. 3 is a schematic perspective view when viewed from above, Fig. 3 is a schematic perspective view when the stacked member is inverted and viewed from obliquely above, Fig. 4 is a plan view of the stacked member, and Fig. 5 is a bottom view of the stacked member. 6 is a side view of the stacked member in an inverted state, FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 4, and FIG. 8 is a partial side view of the stacked member stacked up and down. FIG. 10 is a schematic plan view showing a state in which the stacked members are arranged in the vertical direction and the horizontal direction, and FIG. 10 is a partial schematic plan view showing a state in which leg rods of the stacked members arranged in the vertical direction and the horizontal direction are connected by a connector. .
[0022]
The underground water storage tank A shown in FIG. 1 has a water storage space 3 formed in a concave shape in the ground by digging the ground, and is arranged in the vertical direction and the horizontal direction in the water storage space 3. And the assembly | assembly B which consists of many stacking members 2 of the present invention stacked up and down is loaded. And the coating layer 5 is arrange | positioned at the upper part of this assembly B, and the load added to this coating layer 5 is received by the assembly B. The configuration for disposing the coating layer 5 on the uppermost stacking member 2 of the assembly B will be described later.
[0023]
The covering layer 5 shown in the figure is formed by spreading gravel, chestnut stone, or the like to form a water permeable layer 52. On the surface of the covering layer 5, a lawn 53 or the like is planted. It is also possible to build a walking path or a car parking lot on the surface of the covering layer 5. Since the coating layer 5 has water permeability, water that has penetrated the coating layer 5 enters the water reservoir space 3. The water storage space 3 is provided with a side groove 31 for collecting water and a side groove 32 for draining. A trap 33 is interposed between the water collecting side groove 31 and the water reservoir space 3, and rainwater flowing into the side groove 31 flows into the water reservoir space 3 through the trap 33. For this reason, when solids such as soil and sand are mixed in the rainwater flowing into the side groove 31, the solids are removed by the trap 33. On the other hand, an overflow weir 34 is installed between the drain side gutter 32 and the water reservoir space 3. For this reason, if the water level of the water reservoir space 3 is to rise beyond the overflow weir 34, the water overflows the overflow weir 34 and flows out into the side groove 32. A water infiltration facility 35 for allowing water to penetrate into the ground is connected to the side groove 32. In addition, a drain pipe 36 or the like leading to a river or the like is connected to the gutter 32. In addition, a manhole 37 that penetrates the coating layer 5 and reaches the bottom of the water reservoir space 3 is provided.
[0024]
Such an underground water storage tank A can be used for avoiding a situation in which the water level of a river suddenly rises and causes flooding when hit by a heavy rain. For example, while the river level is rising due to the heavy rain, a part of rainwater that flows on the surface and flows into the river flows into the water storage space 3 of the underground water storage tank A and is temporarily stored. In addition, when concentrated water rain has subsided and the water level of the river has fallen, if the stored water in the reservoir space 3 is discharged into the river, flooding due to a sudden rise in the water level of the river can be avoided. When an emergency such as a fire is required, a fire hose or a pumping pipe 38 is inserted into the water storage space 3 from the manhole 37, and the water stored in the water storage space 3 is pumped through the pumping pipe 38 or the like. It can also be used. Usually, the water in the water reservoir space 3 can be used for irrigation of plants, etc. For this purpose, it is preferable to separately draw out a water inlet from the water reservoir space 3.
[0025]
In the underground water tank A, the wall 39 forming the water reservoir space 3 may be a water impermeable layer such as clay, concrete or a water impervious sheet, or a water permeable layer laid with gravel, chestnut stone or a water permeable sheet. However, if the water-permeable layer is used, the water in the water reservoir space 3 can be gradually released into the ground.
[0026]
The underground water tank stacking member 2 of the present invention loaded in the water reservoir space 3 of the above underground water tank A includes four connecting bones 21 formed in a square ring shape as shown in FIGS. Each corner portion 22 is integrally provided with an equal-length leg rod 23 made of a hollow cylinder. These four leg rods 23 are arranged in parallel to each other, and are provided at right angles to the connecting bone 21. In addition to the hollow single cylinder leg rod, the hollow cylinder leg rod 23 naturally includes a hollow multiple cylinder leg rod such as a hollow double cylinder or a hollow triple cylinder. The connecting bone 21 is provided with ribs 27 extending diagonally, and a reinforcing bracket 26 is provided between each leg rod 23 and the connecting bone 21. The reinforcing bracket 26 is useful for preventing the perpendicularity between the leg rod 23 and the connecting bone 21 from being damaged by the load applied to the leg rod 23.
[0027]
A fitting portion 24 is provided at one end portion of each leg rod 23, and a fitted portion 25 having a shape and size that can be fitted to the fitting portion 24 is provided at the other end portion of the leg rod 23. It has been. In this embodiment, although the shape and size of the fitting portion 25 are determined so that the fitting portion 24 can be internally fitted to the fitting portion 25, conversely, The shape and size of the fitted portion 25 may be determined so that the fitting portion 24 can be fitted outside. Further, in this embodiment, the connecting bone 21 is formed by a plate-shaped frame, and only the fitted portion 25 of the leg frame 23 protrudes to one side of the plate-shaped frame, and the fitted portion 25 of the leg rod 23 is The part to be removed is projected to the other side of the plate-like frame.
[0028]
In the stacked member 2, the length of the leg rod 23 is 20 to 80 cm, preferably 25 to 50 cm, and the outer diameter of the leg rod 23 is 2 to 15 cm. If the length of the leg rod 23 is too long or the outer diameter is too small, the bending strength of the leg rod 23 becomes too low, which is not preferable. Moreover, 30-80 cm is appropriate for both the vertical dimension and the horizontal dimension of the connecting bone 21. As can be seen, it is preferable that the stacking member 2 has a cube-like shape as a whole, so that the stacked member 2 can be arranged in the water reservoir space 3 side by side in the vertical direction and the horizontal direction. Workability when stacking is improved.
[0029]
The stacking member 2 described above is integrally formed of a synthetic resin such as polypropylene resin or polyvinyl chloride resin.
[0030]
The above-described stacking members 2 are arranged in the vertical direction and the horizontal direction in the water reservoir space 3 described with reference to FIG. Yes. A form in which the stacked members 2 are stacked one above the other is shown in FIG. That is, between the two stacked members 2 and 2 stacked in the vertical direction, as shown in FIG. 8, the fitting portions 24 of the four leg rods 23 of the stacked member 2 on the one stage are provided. .. Are fitted into the respective fitted portions 25 of the four leg rods 23 of the other stacking member 2. Therefore, the leg rods 23 of the stacked members 2 constituting the assembly B are vertically connected so as not to be shifted or detached from each other.
[0031]
Further, FIG. 9 shows a form in which the stacked members 2 are arranged in the vertical direction and the horizontal direction. That is, in the stacked members 2 arranged in the vertical direction and the horizontal direction, the connecting bones 21 are butted against each other in the vertical direction and the horizontal direction. As shown in FIG. 10, between the four stacked members 2 that are adjacent in the vertical direction and the horizontal direction, the four leg rods 23 adjacent to each other are the leg rods. Are connected by a connector 6 that keeps the relative position of 23... Constant. This connecting tool 6 has a clamp portion 61 that can be fitted / removed from the radial direction to the leg rods 23... FIG. 10 simply by fitting the clamp portion 61 to the leg rods 23. The function of keeping the relative position of the four leg rods 23.
[0032]
In the stacked member 2 of the embodiment described above, the connecting bone 21 is formed in a square, but the connecting bone 21 may be formed in a right isosceles triangle.
[0033]
FIG. 11 is a perspective view of a stacking member 2 according to another embodiment of the present invention in which the connecting bone 21 is formed in an isosceles right triangle shape, and FIG. It is a top view which shows the state combined together in the square.
[0034]
In the stacked member 2 shown in FIG. 11, the connecting bone 21 is formed in an annular shape of a right isosceles triangle as described above, and three leg rods 23 parallel to each other are connected to the three corner portions of the connecting bone 21. 21 and is integrally provided at a right angle. Since the other configuration is substantially the same as the stacked member of the above-described embodiment, the same members in FIG. 11 and FIG.
[0035]
As shown in FIG. 12, such stacked members are combined in a square shape by combining the hypotenuse portions of the connecting bone 21 as a set, and are arranged vertically and horizontally and stacked vertically. The leg pools 23 of the upper and lower stacking members are connected to each other in a state where they are vertically connected to each other.
[0036]
FIG. 13 shows an example in which the leg rod 23 is H-shaped in the stacking member 2 of the two embodiments. When such an H-shaped leg rod 23 is employed, the fitting portion 24 at one end portion of the leg rod 23 becomes an H-shape, so that the fitted portion 25 at the other end portion of the leg rod 24 (FIG. 13). In FIG. 2, a fitted portion 25 of another stacking member 2 is shown), and an H-shaped recessed portion that is the same as the shape of the fitting portion 24 is formed, or a rectangular recessed portion (not shown) It is preferable that the H-shaped fitting portion 24 can be fitted into the rectangular recessed portion.
[0037]
As described above with reference to FIG. 1, the underground water tank A constructed using the stacking member 2 of the present invention has a water reservoir space 3 formed in a concave shape in the ground by digging the ground. An assembly B made up of a number of stacked members 2 arranged in the vertical direction and the horizontal direction and stacked in the vertical direction is loaded into the water reservoir space 3, and the covering layer 5 is disposed on the upper side of the aggregate B. The load applied to the coating layer 5 is received by the stacked member 2 of the assembly B.
[0038]
By the way, when the stacked members 2 are stacked as shown in FIG. 8, the leg rods 23 of the individual stacked members 2 project upward at the uppermost part (uppermost stage) of the assembly B. In such a case, it is desirable to attach the lid using the fitting portion 24 provided at the end of the leg rod 23. As this lid, it is possible to use a rectangular plate-like frame provided with a mounting portion having the same shape and dimensions as the above-mentioned fitted portion 25 on one side, such as FIG. It can be made easily by cutting and removing the leg rod 23 while leaving the fitted portion 25 and the connecting bone 21 of the stacked member 2 shown in FIG. The lid made in this way is attached to the uppermost part of the assembly B by fitting its attachment part (corresponding to the fitted part 25) to the fitting part 24 of the leg rod 23 protruding upward. It is done. It is also possible to use a synthetic resin molded body for such a lid. In this way, when the lid is attached to the uppermost part of the assembly B, for example, a water-permeable sheet and a non-woven fabric are laid on the lid, and the coating layer 5 described above may be disposed thereon. . In FIG. 1, the position of the lid is indicated by reference numeral 51.
[0039]
In this underground water storage tank A, when a person walks on the covering layer 5 or the car is parked, the load applied to the covering layer 5 is that of the stacked member 2 of the present invention constituting the assembly B. The vertical leg rod 23 mainly acts in the direction of compressing in the vertical direction. For this reason, since a large force is not applied in the direction in which the leg rod 23 is bent, there is little possibility that the leg rod 23 bends or buckles. In addition, since the stacked members 2 of the present invention constituting the assembly B all have a frame structure formed by a plurality of leg rods 23 and connecting bones 21, The volume occupied by the aggregate B is kept small. As a result, since the space ratio of the water reservoir space 3 is increased, a large amount of water can be stored in the water reservoir space 3. In addition, since each of the stacked members 2 has the above-described frame structure, it is easy to achieve weight reduction of the stacked members.
[0040]
Further, since the connecting bones 21 of the stacked members 2 arranged in the vertical direction and the horizontal direction are abutted with each other in the vertical direction and the horizontal direction, the stacked members 21 are not easily displaced in the vertical direction and the horizontal direction. It has become. In addition, since the leg rods 23 of the adjacent stacked members 2 aligned in the vertical direction and the horizontal direction are connected to each other by the connector 6, the stacked members 21 are less likely to be displaced in the vertical direction and the horizontal direction. It is in a state. Therefore, the assembly B composed of a large number of stacked members 2 does not collapse due to a load from above.
[0041]
Moreover, the underground water storage tank A of FIG. 1 constructed using the stacking member 2 of the present invention interposes the trap 33 between the water collecting side groove 31 and the water reservoir space 3 as described above, and Rainwater that has flowed into the gutter 31 flows into the water storage space 3 through the trap 33. Such water is free from dead leaves and earth and sand, such as the ground surface and asphalt pavement surface of tennis courts. This is effective in the case where the gas flows into the side groove 31. However, when a water collecting side groove is provided in a place where dead leaves and organic matter are mixed in rainwater, such as in a park, etc., a screen 31a is provided in the side groove 31, as shown in FIG. It is desirable that rainwater after removal flows into the water reservoir space 3.
[0042]
【The invention's effect】
The underground water tank stacking member according to the present invention can be easily constructed by arranging the vertical and horizontal layers in the water reservoir space 3 and stacking them vertically and providing a coating layer thereon. Because of the load applied to the covering layer when a person walks over or parks a car, the leg of each stacked member is less likely to buckle, and the entire stacked member is less likely to collapse. As compared with the conventional stacked member described with reference to FIGS. 15 and 16, there is an effect that it becomes possible to improve the load bearing strength and durability of the underground water tank. In addition, since the stacked member of the present invention has a framework structure with a large space ratio composed of a connecting bone and a leg, it is possible to store a large amount of water, and it is easy to achieve weight reduction. Further, since the stacked member of the present invention is made of synthetic resin and can be cut, for example, by adjusting the length of the leg by cutting the leg, the overall height of the stacked members to be stacked can be reduced. There is also the advantage that the top level can be adjusted to the ground level (ground surface) around the sump space.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view schematically showing an underground water tank constructed using a pile member for an underground water reservoir according to the present invention.
FIG. 2 is a schematic perspective view of the underground water tank stacking member according to the embodiment of the present invention as viewed obliquely from above.
FIG. 3 is a schematic perspective view when the stacked member is inverted and viewed obliquely from above.
FIG. 4 is a plan view of the stacking member.
FIG. 5 is a bottom view of the stacking member.
FIG. 6 is a side view of the stacked member in an inverted state.
7 is a cross-sectional view taken along line VII-VII in FIG.
FIG. 8 is a partial side view showing a state in which the stacked members are stacked up and down.
FIG. 9 is a schematic plan view showing a state in which the stacked members are arranged in the vertical direction and the horizontal direction.
FIG. 10 is a partial schematic plan view showing a state in which leg rods of stacked members arranged in the vertical direction and the horizontal direction are connected by a connecting tool.
FIG. 11 is a perspective view of a stacking member according to another embodiment of the present invention.
FIG. 12 is a plan view showing a state in which the stacked members are combined into a square shape by combining the hypotenuse portions of the connecting bones in pairs.
FIG. 13 is a schematic partial perspective view showing a modified example of a fitting portion and a fitted portion of a leg rod.
FIG. 14 is a longitudinal sectional view showing a modification of the side groove of the underground water tank constructed using the piled member for underground water reservoir of the present invention.
FIG. 15 is a schematic perspective view of a conventional stacking member used in a conventional underground water tank.
FIG. 16 is a partial side view showing a stacked state of conventional stacking members.
FIG. 17 is an explanatory view showing a configuration of an uppermost portion in which conventional stacking members are stacked.
[Explanation of symbols]
A Subsurface water tank B Aggregate 2 Underground water tank stacking member 3 Reservoir space 5 Covering layer 6 Coupling tool 21 Coupling bone 23 Leg rod 24 Fitting part 25 Fitted part 26 Reinforcing bracket 51 Position of the lid

Claims (1)

At each of the four corners of the connecting bone formed in a rectangular shape having a vertical dimension and a horizontal dimension of 30 to 80 cm, a hollow rod with a length of 20 to 80 cm and an outer diameter of 2 to 15 cm parallel to each other is connected to the connecting bone. A stacking member provided integrally at a right angle, provided with ribs extending in the diagonal direction of the connecting bone, and provided with a fitting portion at one end of each leg rod, and a fitting that can be fitted into this fitting portion A stacking member for an underground water tank made of synthetic resin, with a joint portion provided at the other end of each leg rod.

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