JP2002339383A - Joint member and structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure having voids therein in a short period of time. SOLUTION: The structure 6 is constituted of a plurality of main bodies 7 each having a board-like substrate 9 and projections 21 projecting from one side 10 of the substrate. The structure 5 is constructed by interposing a second joint member 48 between both connecting portions 15 of the respective main bodies 7 to connect the same together, placing the main bodies 7 so as to face both front ends 27 of the projections to each other, and interposing a first joint member 33 between both the front ends 27 of the projections. The first joint member 33 has a peripheral edge 39 having almost the same size as that of a peripheral edge 13 of the substrate formed like a board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint member and a structure in which structural members are connected using the joint member.

[0002]

2. Description of the Related Art Conventionally, when a water storage tank or a structure is provided, for example, when a rainwater storage tank is provided underground on soft ground and a park, a road, a parking lot, and the like are provided above the tank, the ground is first excavated. To make a pit and stake it out or do any other ground reinforcement (or improvement). further,
After laying crushed stone for foundation at the bottom of the reinforced soil pit, a reinforced concrete floor and the like are provided on this to make the foundation.

Further, on this foundation, a structure made of columns and beams of, for example, reinforced concrete is constructed, and a rainwater storage tank is constructed so that rainwater can be stored in a space formed inside the structure. Soil and the like are piled on the rainwater storage tank constructed in this way, and the park, road, parking lot, and the like are provided.

[0004]

However, the structure constructed by columns and beams such as reinforced concrete as described above becomes heavy in itself, and the foundation must be sufficiently strong. Furthermore, the construction of columns and beams requires temporary frame work for placing concrete and other incidental works, which takes time. Moreover,
Since the construction requires skill, sufficient consideration is required for the construction. In particular, when installing such a structure on a weak ground, for example, a soft ground, careful planning and design are required.

An object of the present invention is to provide a structure having a gap in a short period of time.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is a joint member for connecting structural members, wherein the structural member is made to protrude from a board-like base and one side of the base. The joint member is interposed between the tips of the protrusions, and has a peripheral edge formed in a disk shape and having substantially the same size as the peripheral edge of the base. I do.

[0007] By doing so, the joint member is interposed between the tips of the protruding portions of the structural member and connects adjacent structural members. Furthermore, since the joint member is formed in a disk shape and has a peripheral edge having substantially the same size as the peripheral edge of the base of the structural member, when a plurality of structural members are connected, the projecting portion tip position of the structural member is In this case, the peripheral edges of the joint members abut against each other, and can mainly support a load parallel to the board surface of the joint member formed in a disk shape.

[0008] Another joint member for connecting the structural members to each other, wherein the other joint member is provided between the other side of the base of the structural member positioned in the same direction and the tip of the protrusion. It is characterized by being interposed and capable of connecting adjacent structural members formed in a disk shape.

In this way, the structural members can be connected to each other by interposing another joint member between the other side of the base of the structural member and the tip of the protruding portion which are positioned in the same direction. Can be. In particular, even if the shape of the other side of the base of the structural member and the shape of the tip of the protrusion of the structural member do not directly match, the shape of one side of this other joint member is the same as that of the base of the structural member. Conforms to the shape of the other side,
Since the shape of the other side of this other joint member is formed so as to conform to the tip shape of the protrusion of the structural member, the two structural members positioned in the same direction by interposing this another joint member Can be linked.

[0010] Further, a structural member can be formed by connecting structural members using the joint member. The structural member may have a connecting portion for connecting another structural member around the base. In this case, another structural member can be connected with the second joint member interposed between the connecting portions.
Then, the structural member can be formed by positioning the structural member such that the distal ends of the projecting portions of the structural member face each other and connecting the structural member with the joint member interposed between the distal ends of the projecting portions. . In this case, the joint member is used more in order to increase the strength of the connecting portion toward the lower side of the structure,
It may be reduced toward the top.

In the structure thus formed, the structural member and another structural member are connected two-dimensionally or three-dimensionally via the joint member and the second joint member, and the load resistance is improved. And is formed in a short time. Further, a void (or space) is formed inside the structure by connecting the protruding portions of the structural members. This gap can be used depending on the purpose of use. For example, water can be stored by covering the outside of the structure with a water-blocking material. Further, by covering the outside of the structure with a water-permeable material, the water stored in the structure can be gradually penetrated into the underground.

Further, the structural member can be formed by connecting the structural members using another joint member. That is, the structure is formed by locating the structural members in the same direction and connecting the structural members with another joint member interposed between the other side of the base of the structural member and the tip of the protrusion. The structure thus formed is formed in a short time by connecting the structural member and another structural member two-dimensionally or three-dimensionally in the same direction via another joint member or the second joint member. You. Also in this structure, a void (or space) is formed inside the structure due to the protrusion of the structural member. This gap can also be used in various ways as described above, depending on the purpose of use.

Next, the requirements constituting the present invention will be further described. Structures of the present invention, for example, parks, roads, rainwater storage and infiltration facilities and fire prevention storage facilities provided underground such as parking lots, water storage facilities provided under the river, a building that forms a slope of the river, It can be used as a structure of various facilities, structures or structures such as a structure that forms under a road, a structure that is provided under an embankment, and a construction facility that is constructed underwater. In particular, it can be optimally used for structures provided on soft ground.

The shape of the structural member is not particularly limited as long as it has a base and a protruding portion. A rectangular base and one hollow truncated conical protruding portion protruding from one side of the base are provided. It is good to have In this case, by providing connecting portions for connecting the structural members to the four corners of the base and the tips of the protruding portions, it is possible to obtain a two-dimensionally or three-dimensionally aligned structure. In addition, the hollow frusto-conical projection can have the same strength in any direction,
Since they can be stacked, the transport efficiency can be improved.

The other structural member may be the same as or different from the above structural member. The shape of the joint member is not particularly limited as long as it is disk-shaped, but a plate provided with ribs on both sides thereof is lightweight, secures strength, and reduces the amount of material used. The size of the peripheral edge of the base is substantially the same as the size of the peripheral edge of the base of the structural member. It is not necessary to have exactly the same shape, but at least the two opposite directions of the peripheral edge have the same size.

The other joint member is not particularly limited as long as it can connect the structural members in the same direction in the shape of a board. The joint member has a shape capable of connecting the surface of the base of the structural member and the surface of the tip of the protrusion. When connecting the structural members in the same direction using another joint member, the direction may be, for example, a direction in which the protrusion of the structural member is directed upward (vertically upward), or a direction in which the protrusion is downward (vertically downward). ). The second joint member is interposed between the connecting portions of the structural member and the joint member, and connects the bases of the structural member or the boards of the joint member.

The member forming the structure of the present invention is made of a synthetic resin such as polypropylene, a lightweight inorganic material, a foamed material of an inorganic material such as a synthetic resin or lightweight concrete, a light metal such as an aluminum alloy, or a rigid material such as a composite material thereof. It is good to be formed with a lightweight material having Each member is lightweight because the members are formed of a lightweight material. Since the weight per member is small, transportation, transportation, construction and the like are easy, and assembly of the member is easy. In addition, the structure can be assembled in a short time because a plurality of lightweight members can be connected and assembled.

The structural member, another structural member, a joint member and the like are preferably provided with holes on the board surface. When storing water, it allows water to move up and down through this hole.

When the projecting portion of the structural member is formed in a hollow truncated conical shape, a core member can be inserted inside the projecting portion. In this case, the load applied to the structural member can be supported by the protruding portion itself and also shared by the core member, and the load resistance of the structure can be improved.

In the present structure, a gap is formed by a protrusion of a structural member or another structural member. The porosity (or porosity) S of the structural member is as follows: S = (V1−V2) / V1, where V1: Volume of one member forming a void V2: Volume converted from mass of one member forming a void The larger the S, the better. However, if the porosity S is too large, the load resistance to a load applied from above and the strength to a load applied from the side may be reduced. The upper limit of the porosity S is about 97%.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a joint member and a structure according to the present invention will be described below in detail with reference to the drawings. In FIGS. 1 to 12, the same or equivalent structures and working parts are denoted by the same reference numerals.

FIG. 1 is a sectional view showing an embodiment of a water storage facility using a structure according to the present invention. FIG. 2 shows FIG.
FIG. 2 is a sectional view taken along line II of FIG. The water storage facility 1 is provided underground in a park, a road, a parking lot, or the like, and can be optimally used particularly when the ground is soft (soft ground). The water storage facility 1 includes, for example, a dent 9 formed by digging the soft ground 90.
1, a base 93 provided on the bottom, a structure 5 provided on the base 93, and a water shielding sheet 9 covering the outside of the structure 5.
7 and a protection sheet 98, and a backfill material 100 such as gravel or soil backfilled outside the protection sheet 98.

The ground 90 is not particularly limited, but may be soft ground. The foundation 93 is divided into two layers, and is formed by a crushed stone layer 94 of crushed stone C40-0 and a sand layer 95 such as Crusheran No.7. The backfill material 98 is crushed stone,
Soil, sand and other things or mixtures thereof.

The structural body 5 includes a plurality of main bodies (structural members) 7, the protruding portions 21 of the main body are positioned so that the tips thereof face each other, and a first joint member or center stage 33 is provided between the protruding portions. And the main bodies 7 are connected to each other. In this case, the number of installation positions of the first joint member 33 increases toward the lower side of the structure 5. In this embodiment, below the lowermost stage (first stage) of the main body 7, between the first stage and the second stage, between the second stage and the third stage, and between the third stage and the fourth stage, respectively. It is provided on the whole surface or all places. The space between the fifth stage and the sixth stage is provided only along the periphery of the structure 5.

In short, since the load becomes larger toward the lower side of the structure 5, the number of the first joint members 33 is increased toward the lower side of the structure. The structure 5 has a void or space formed therein, and mainly supports a load from above. The structure 5 of the present embodiment is provided with seven stages in the height (vertical) direction, six rows in the width direction, and eight rows (FIG. 2) in the length direction (FIG. 2). It is not limited to. Then, the depth of the first joint member 33 is increased as the depth of the ground becomes deeper, so that the structure can withstand loads in the vertical and horizontal directions.

FIG. 3 shows a main body forming the structure of the water storage facility of FIGS. 1 and 2, (A) is a plan view, and (B) is a view of (A).
FIG. 2 is a sectional view taken along line II-II. The main body 7 has a board-shaped base 9 and a protrusion 21 protruding from one side 10 of the base 9. The main body 7 is formed of polypropylene, and has corrosion resistance to water, durability against load, vibration, and the like.

As shown in the plan view of FIG. 3A, the base 9 is square (or rectangular), and connection portions 15 are provided at four corners. The main bodies 7 are connected to each other with a second joint member or a corner joint 48 interposed between the connecting portions 15 of the two main bodies 7. Furthermore, the base 9 is a square plate 12
Has a peripheral edge 13 along the edge of. Reinforcing ribs 18 are provided between the peripheral edges 13 and between the peripheral edge 13 and the protruding portion 21 in a lattice or oblique manner. The connecting portion 15 is connected to a main body 7 having the same shape and the same size (not shown) or another main body having a different shape and size. Each connecting portion 15 is provided with two connecting holes 16 in a rectangular recess 15a recessed from the surface 12a of the plate.

Further, the base 9 is provided with a rib 18a for fixing the side member 67. The base 9 may have a hole (not shown) through which one side 10 and the other side 11 pass. The size of the hole depends on the intended use of the structure 5,
Appropriate size depending on the application. When water is stored inside the structure 5, this water can move up, down, left and right through this hole.

One protrusion 21 is provided at the center of the base 9. Its shape is a truncated conical cylinder, and the outer cylinder 23 and the inner cylinder 25
And the outer cylinder 23 and the inner cylinder 25 are connected by an annular portion at the distal end 27, and have a shape folded back from the outer cylinder 23 to the inner cylinder 25. The outer cylinder 23 and the inner cylinder 2 are provided on the surface 12a of the base plate.
5, an annular opening is formed. Also, the protrusion 21
The first joint member 33 described above is attached to the annular portion of
And eight holes 29 for connecting packings 59 are provided at equal pitches on the same circumference. A circular opening 30 is formed at the tip. Projection 2 formed in a truncated conical cylindrical shape
No. 1 is lightweight, stiff, and excellent in load resistance.
The protruding portion 21 has a cylindrical frusto-conical shape whose diameter gradually decreases toward its tip 27.

FIG. 4 shows a first joint member forming the structure of the water storage facility of FIGS. 1 and 2, (A) is a plan view, and (B)
FIG. 3 is a sectional view taken along line III-III of FIG. The first joint member or the center stage 33 connects the tips of the main body 7 (not shown) to each other, and the tip 27 of the protrusion (FIG. 3)
It has a peripheral edge 39 which is interposed between them and is formed in a disk shape and has substantially the same size as the peripheral edge 13 of the base. That is, the peripheral edge 39 is formed around the rectangular plate 35.

Further, the first joint member 33 has another annular connecting portion 45 outside the annular connecting portion 43. The annular connecting portion 43 is provided with a hole 29 provided at the tip of the main body projecting portion 21.
Protrusions 44a and 44b to be inserted into (FIG. 3) are provided. The annular connecting portion 45 is used when connecting another main body having four projecting portions, and the same as the protrusions 46a, 46b
Is provided. The ribs 41 are provided on both sides of the plate 35 in a lattice or oblique manner. The rib 41 is provided between the annular connecting portion 43, the annular connecting portion 45, and the peripheral edge 39. A rib 41a for fixing the side member 67 is attached to the plate 35.
Is provided. Connecting portions 36 are formed at four corners of the plate 35. Each connection portion 36 is provided with a connection hole 37 for connection.

FIG. 5 shows a second joint member forming the structure of the water storage facility shown in FIGS. 1 and 2, (A) is a plan view, and (B) is a plan view.
FIG. 4 is a sectional view taken along line IV-IV of FIG. The second joint member or corner joint 48 has four protrusions 56 on one side of the plate 50. The protrusion 56 is connected to the connecting portion 1 of the main body base.
5 (FIG. 3) and the connecting portion 36 (FIG. 4) of the first joint member. When the protrusion 56 of the second joint member 48 is connected to the main body 7 or the connection portions 15 and 36 of the first joint member 33, the protrusion 56 elastically bends to the other side and the connection hole 16 of the connection portion. , 37. Further, the plate 50 has an edge rib 52, a rib 54 and eight holes 57. The edge rib 52 and the rib 54 maintain a predetermined rigidity. The holes 57 are provided to save material and reduce weight.

FIG. 6 shows a packing forming the structure of the water storage facility of FIGS. 1 and 2, (A) is a plan view, and (B) is a cross-sectional view taken along the line V-V of (A). The packing 59 is attached to the main body 7.
Are used to connect the protruding portion tips 27 (shown in FIG. 1). The packing 59 has a cylinder 60 and an annular plate 61 provided around the cylinder 60. The annular plate 61 is provided with four projections 62 on both surfaces thereof. The positional relationship between the protrusion 62 on one surface and the protrusion 62 on the other surface is shifted from each other by 45 degrees. The positions of the protrusions 62 on one side are provided at the same pitch in the same circumferential direction of the annular plate 61. The protrusion 62 is inserted into a hole 29 formed at the tip of the protrusion of the main body. The packing 59 is formed of a synthetic resin or the like.

FIG. 7 shows side members forming the structure of the water storage facility of FIGS. 1 and 2, (A) is a front view, and (B) is a side view. The side member 67 is used on the outer side of the main body located on the outermost side of the structure 5 (not shown) (shown in FIG. 1). The side member 67 includes a rectangular plate 69, an edge frame 71 provided on an edge of the plate 69, and reinforcing ribs 7 provided in a grid between the edge frames.
And 3. Further, the side member 67 has two sets of protrusions 76 formed on the one end 74 and the other end 75 in pairs. The gap 77 between the two projections 76 is
Is fixed to the rib 18a provided on the first joint member 33 and the rib 41a provided on the first joint member 33. The shape of the projection 76 is not particularly limited, but may be a cubic shape, a rib shape, or the like.

When the structure 5 (not shown) is buried in the ground and the structure 5 is covered with sheets, the structure 5
Is subjected to earth pressure due to ground crushed stone and sand on the outer surface. The side member 67 supports the pressure or load from the ground and receives the sheets on a flat surface to prevent breakage such as tearing. When the structure 5 is provided underground, the side member 67
It prevents earth and sand from entering the inside of the structure 5.

As shown in FIG. 1, the outside of the structure 5 is covered with a water-blocking sheet 97. The water-blocking sheet 97 is made of a synthetic resin material such as a synthetic rubber sheet. Further, a protective sheet 98 is used outside the water-blocking sheet 97. For the protection sheet 98, for example, a material mainly composed of polyester single fiber is used. Incidentally, when the stored water is to gradually penetrate into the underground, a part or all of the water shielding sheet 97 can be replaced with a water permeable sheet.

The water storage facility 1 having the above structure operates as follows. That is, the first joint member (center stage) 33 is interposed between the tips 27 of the projecting portions of the main body, and connects the main body 7. Further, the first joint member 33
Is formed in a disk shape and has a peripheral edge 39 having substantially the same size as the peripheral edge 13 of the base of the main body.
Are connected, the peripheral edges 39 of the first joint member 33 abut on each other at the horizontal position of the protruding tip 27 of the main body, and are mainly parallel to the board surface of the first joint member 33 formed in a disc shape. It can support the load.

The main body 7 is provided with four other main bodies 7 at the four corners of the base.
Is provided, the other main body 7 can be connected with the second joint member 48 interposed between the connecting portions 15. Thus, the structure 5
The main body 7 is connected two-dimensionally or three-dimensionally via the first joint member 33 and the second joint member 48 to improve the load resistance and is formed in a short time. Further, a void is formed inside the structure 5 by connecting the protruding portions 21 of the main body. By covering the outside of the structure 5 with a water-blocking sheet, water such as rainwater can be stored.

Further, since the shape of the protruding portion 21 of the main body 7 is a hollow truncated cone, the strength in any direction can be the same. Furthermore, since a plurality of main bodies 7 can be stacked during transportation, transportation efficiency can be improved.

FIG. 8 is a sectional view showing an embodiment of a road facility using the structure according to the present invention. Road facility 3
Are a foundation 93 provided on the ground 89, a structure 6 provided on the foundation 93, a sheet layer 102 covering the outside of the structure 6, and a structure on the structure 6 via the sheet layer 102. And a banking material 108 piled on slopes (slope) on both sides of the road building 104 via the sheet layer 102.

Although the ground 89 is not particularly limited, the structure 6 can be provided even on soft ground. The foundation 93 is divided into two layers, and is formed by a crushed stone layer 94 of crushed stone C40-0 and a sand layer 95 such as Crusheran No.7. The road building 104 may be a structure that is usually constructed. For example, a floor board 106 such as reinforced concrete formed on the structure 6, an asphalt layer 105 laid on the floor board 106, and a road shoulder And a drain groove device 107 using a U-shaped groove or the like provided.

The structure 6 includes a plurality of main bodies 7 shown in FIG. Another main body 7 is connected between the connecting portions 15 of the main body 7 with the second joint member (or corner joint) 48 shown in FIG. 5 interposed therebetween. The side member 67 shown in FIG. 7 is fixed to the outermost body located on the inclined surface side.

FIG. 9 is a sectional view showing a main body and a third joint member forming a structure of a road facility. In the structure 6 shown in FIG. 8, the main body 7 is positioned in the same direction, and the third joint member or the joint 80 is interposed between the other side 11 of the base 9 of the main body and the tip 27 of the protrusion. The main bodies 7 are connected to each other.

FIG. 10 shows the third joint member shown in FIG. 9, (A) is a plan view, and (B) is a sectional view taken along line VI-VI. The third joint member 80 is provided with a projection 8 on a circular plate 81.
3, 84 are provided. As shown in FIG.
The four projections 83 provided on the joint member 80 are inserted into four holes 19 (shown in FIG. 3) provided on the base of the main body. The two projections 84 provided on the third joint member are inserted into two of the eight holes 29 (shown in FIG. 3) among the eight holes 29 provided on the distal end 27 of the main body.

As shown in FIG. 8, the sheet layer 102 is provided on four surfaces of the upper surface, the lower surface, and both side surfaces (slope surfaces) of the structure 6. The sheet layer 102 is formed in two layers,
It is formed of a water-blocking sheet located on the side (or inside) and a protection sheet located outside the water-blocking sheet. As the material of the water-impervious sheet and the protective sheet, those used in the water storage facility 1 described above are used. Embankment material 10
8 uses crushed stone, earth, sand, and others or a mixture thereof.

The road facility 3 having the above structure operates as follows. That is, the main bodies 7 can be connected to each other by interposing the third joint member 80 between the other side 11 of the main body base and the protruding tip 27 which are located in the same direction. In particular, even if the shape of the other side 11 of the base of the main body and the shape of the tip 27 of the protruding portion of the main body cannot be directly connected, they can be positioned in the same direction by interposing the third joint member. The two main bodies 7 can be connected.

Further, the structure 6 includes a first joint member 33.
The main body 7 is three-dimensionally connected via the second joint member 48 and the second joint member 48, so that the load resistance is improved and the main body 7 is formed in a short time. Then, a gap is formed inside the structure 6 by connecting the protruding portions of the main body 7 to each other. This gap can be used depending on the purpose of use. In this embodiment, by covering the outside of the structure 6 with a water-blocking sheet, it is possible to store rainwater that has fallen on roads and other places. Other structures and operations in FIG. 8 are similar to those in the water storage facility 1 shown in FIG.
Therefore, the description is omitted.

FIG. 11 shows another embodiment of the structure according to the present invention, and is a cross-sectional view of a main part in which a core member 86 is inserted into an inner cylinder 25 of a main body. FIG. 12 is a sectional view taken along line VII-VII, showing the main body and the core member of FIG. Since the main body protrusion 21 is formed in a hollow truncated cone shape, the inner cylinder 2 of the protrusion 21 is formed.
The core member 86 can be put in the inside 5. The shape of the core member 86 is a hollow truncated conical shape, and the truncated side is closed.

The opening-side end of the core member 86 contacts the base plate 12 (FIG. 3). The closed side end of the core member 86 contacts the surface of the plate 35 of the first joint member 33. By inserting the core member 86, the load applied to the main body 7 is supported by the protruding portion 21 itself and is also shared and supported by the core member 86, so that the load resistance can be improved. Further, a hardening material, for example, a ready-mixed concrete is poured into the inside of the core member 86, and a hardened material is attached as shown in FIGS. 11 and 12, so that the load resistance can be further improved.

Next, the results of a load resistance test using the core member 86 will be described. The main body 7 and the core member 86 are made of polypropylene. Size of base 9 Height 7
In the case of a structure using only the main body 7 having a size of 21 mm × width 721 mm × thickness 50 mm, height of the protrusion 390 mm, and average thickness 4 mm, the load bearing capacity was 30 tons / square meter. In the case of a structure using the same main body 7 and a core member 86 having an average diameter of 79 mm and a thickness of 4 mm, the load bearing capacity is 40 tons /.
Square meters. Further, the main body 7 and the core member 8
In the case of a structure using a mixture of hardened concrete and hardened concrete, the load capacity is 80 tons / square meter, and the load capacity is greatly improved.

[0051]

According to the present invention, a structure having voids can be provided in a short period of time.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a water storage facility using a structure according to the present invention.

FIG. 2 is a sectional view taken along line II of FIG. 1;

3A and 3B show a main body forming the structure of the water storage facility of FIGS. 1 and 2, wherein FIG. 3A is a plan view and FIG. 3B is a sectional view taken along line II-II of FIG.

4A and 4B show a first joint member forming the structure of the water storage facility of FIGS. 1 and 2, wherein FIG. 4A is a plan view and FIG.
FIG. 3 is a sectional view taken along line I-III.

5A and 5B show a second joint member forming the structure of the water storage facility of FIGS. 1 and 2, wherein FIG. 5A is a plan view and FIG.
FIG. 4 is a sectional view taken along line IV.

6A and 6B show packings forming the structure of the water storage facility of FIGS. 1 and 2, wherein FIG. 6A is a plan view and FIG. 6B is a sectional view taken along line V-V of FIG.

FIGS. 7A and 7B show side members forming the structure of the water storage facility of FIGS. 1 and 2, wherein FIG. 7A is a front view and FIG. 7B is a side view.

FIG. 8 is a cross-sectional view showing one embodiment of a road facility using a structure according to the present invention.

FIG. 9 is a cross-sectional view showing a main body and a third joint member forming the structure of the road facility of FIG. 8;

10A and 10B show a third joint member of FIG. 9, wherein FIG. 10A is a plan view and FIG. 10B is a sectional view taken along line VI-VI.

FIG. 11 shows another embodiment of the structure according to the invention,
It is principal part sectional drawing which put the core member in the inner cylinder of the main body.

FIG. 12 shows the main body and the core member of FIG. 11;
It is a line sectional view.

[Description of Signs] 1 Water storage facility 3 Road facility 5, 6 Structure 7 Main body (structural member) 9 Base 10 One side 11 The other side 13 Peripheral edge 15 Connection part 21 Projection part 27 Tip 33 First joint member or Center stage (joint member) 39 Peripheral edge 48 Second joint member or corner joint 80 Third joint member or joint (another joint member)

 ──────────────────────────────────────────────────の Continuing on the front page (72) Kosaburo Hayashi 1-10-15 Kanazawacho, Hitachi City, Ibaraki Prefecture (72) Kanako Hayashi 1-10-15 Kanazawacho, Hitachi City, Ibaraki F-term (reference 2D047 AB01 2D063 AA00

Claims (4)

[Claims] 1. A joint member for connecting structural members, wherein the structural member has a board-shaped base and a protrusion protruding from one side of the base. A joint member interposed between the front ends and having a peripheral edge formed in a disk shape and having substantially the same size as the peripheral edge of the base. 2. A joint member for connecting structural members to each other, wherein the structural member has a board-shaped base and a protrusion protruding from one side of the base, and the another joint member is Another joint member which is interposed between the other side of the base of the structural member positioned in the same direction and the tip of the protruding portion, and is formed in a disk shape so that adjacent structural members can be connected to each other. . 3. A plurality of structural members having a board-shaped base and a protruding portion protruding from one side of the base, and the structural member has a connecting portion around the base for connecting another structural member. The second structural member is connected between the connecting portions to connect the other structural members, and the structural members are positioned such that the distal ends of the protruding portions face each other, and the distal ends of the protruding portions are positioned. A structure formed by connecting the structural members with the joint member according to claim 1 interposed therebetween. 4. A plurality of structural members having a board-shaped base and a projecting portion protruding from one side of the base, and the structural member has a connecting portion around the base for connecting another structural member. Then, a second joint member is interposed between the connecting portions to connect the another structural member, and the structural member is positioned in the same direction, and the other side of the base of the structural member and the protrusion A structure formed by connecting the structural member with another joint member according to claim 2 interposed between the structural member and a tip of the portion.