JP3463552B2 - Unit for civil engineering structure and method of using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a civil engineering structure unit used for construction of civil engineering structures such as river revetments, coastal levees, and road slope protection, and methods of using the same.

[0002]

2. Description of the Related Art Japanese Patent Application No. 6-2
As shown in No. 94776, a civil engineering structure unit tends to be used in order to grow a plant on a revetment or the like so that a nest of fish can be formed. This civil construction unit is
A plurality of stones are arranged on one surface side of the required size of the flexible sheet body, and each stone is attached to the flexible sheet body. By laying this civil engineering structure unit on the bank protection slope, etc., it is possible to construct the above-mentioned multi-natural environment with a plurality of stones, while the flexible sheet body can prevent the suction of earth and sand and prevent the suction. It is possible to provide a multi-natural revetment without laying a sheet on the revetment slope in advance.

[0003]

However, in the civil engineering structure unit described above, there is no hooking portion for the lifting means, and there is a problem in how to easily transport the civil engineering structure unit to the revetment slope. Become. Also,
After the civil engineering structure unit has been transported to and installed on the revetment slope, etc.
There is a possibility that adjacent civil engineering structure units may be displaced from each other due to the flow of wind or the like), so that the effect of preventing the suction of the earth and sand from being partially exerted effectively.

The present invention has been made in consideration of the above circumstances, and an object thereof is to make it possible to easily transport a civil engineering structure unit to a revetment slope or the like with a simple structure. After laying on the bank wall, etc., it is to make it possible to maintain the laying state of the regular civil engineering structure unit for a long period of time.

[0005]

In order to achieve the above object, the invention of claim 1 provides a civil construction unit in which a plurality of stones are mounted on a flexible sheet body. In the flexible sheet body, a plurality of holes are provided around the entire circumference of the flexible sheet body in the vicinity of the peripheral edge portion of the flexible sheet body where the stone does not exist. It is configured such that it is provided at intervals in the circumferential direction of the sheet body.

Further, preferred embodiments of the invention of claim 1 are as described in claims 2-5.

Further, in order to achieve the above object, claim 6
In the invention, a plurality of stones are mounted on the flexible sheet body, and the flexible sheet body is provided in the vicinity of the peripheral portion of the flexible sheet body where the stones are not present. A civil engineering construction unit is provided in which a plurality of holes are provided at intervals in the circumferential direction of the flexible sheet body over the entire circumference of the flexible sheet body. Is used as a lifting use hole when the civil engineering structure unit is conveyed, and is used as a connecting hole between adjacent civil engineering structure units when laying the civil engineering structure unit.

As a preferred embodiment of the invention of claim 6,
It is as described in claims 7 and 8.

[0009]

According to the invention described in claim 1, the civil engineering structure unit is provided in the flexible sheet body in the vicinity of the peripheral portion of the flexible sheet body in which stones are not present. Since a plurality of holes are provided at intervals in the circumferential direction of the flexible sheet body over the entire circumference of the flexible sheet body, each hole is conveyed during transportation. , The civil engineering structure unit can be transported by using it as a lifting use hole, and at the time of laying, each of the holes is used as a connecting hole between the adjacent civil engineering structure units for the adjacent civil engineering structure. The units can be connected to each other. Therefore, it is possible to provide a civil engineering structure unit that can be easily transported to a revetment slope or the like with an extremely simple configuration and that can maintain its regular laid state for a long period of time after being laid on the revetment slope or the like. Become. Moreover, when the adjacent civil engineering structure units are connected to each other, the holes of the flexible sheet bodies are overlapped with each other as a guide, so that the adjacent civil engineering structure units are inevitably regulated during the action. In addition to the laid state, the peripheral portions of the adjacent civil engineering structure units can be reliably overlapped with each other, and the suction of the earth and sand at the joint between the two can be effectively prevented.

According to the second aspect of the invention, since the flexible sheet body is formed in a rectangular shape, the outer shape of the flexible sheet body can be used to lay out another civil engineering structure unit. Taking into consideration, it is possible to lay them out easily and to overlap the entire peripheral edge portion of the flexible sheet body with the adjacent flexible sheet body (unit for civil engineering structure) with a certain width. Become. For this reason, it is possible to facilitate the laying work and efficiently obtain the effect of preventing the suction of the earth and sand.

According to the invention described in claim 3, since each hole is provided with the ring-shaped metal fittings around the hole, the strength of the peripheral portion of each hole is reinforced, and the civil structure is concerned. During construction using the unit (lifting, connecting, etc.), it is possible to prevent the flexible sheet body from breaking based on each hole.

According to the invention described in claim 4, since the flexible sheet body is provided with the covering portion capable of covering at least each hole, after the laying, each hole is formed by the covering portion. It is possible to prevent the soil from being sucked out from the holes by closing the holes.

According to the invention described in claim 5, since the flexible sheet body is formed of the non-woven fabric, the water permeability is ensured, and it is possible to make the sheet more natural. You can do it.

According to the invention described in claim 6, each hole of the unit for civil engineering structure is used as a hole for lifting when the unit for civil engineering structure is conveyed, and the unit for civil engineering structure is laid. In this case, since it is used as a connection hole between adjacent civil engineering structure units, it can be easily transported to the revetment slope, etc. with an extremely simple structure, and after being laid on the revetment slope, etc. The laid condition can be maintained for a long time. Moreover, each flexible sheet
By overlapping each hole of the body as a guide, it is inevitable that the adjacent civil engineering structure units can be placed in a regular laying state and the peripheral portions of the adjacent civil engineering structure units can be reliably overlapped. At the same time, it is possible to effectively prevent the earth and sand from being sucked out at the joint between the two. Therefore, it is possible to improve the workability of a revetment or the like using the civil engineering structure unit.

According to the invention described in claim 7, when each hole is used as a lifting use hole, the hook portion of the lifting means is hooked directly to the hole, so that each hole is lifted. Will be used as a hook hole for
With regard to transportation, the same operational effect as that of the above-described claim 6 can be specifically obtained.

According to the invention described in claim 8, when each hole is used as a lifting use hole, a string member is passed through each hole to hold the string member in the flexible sheet body. Since the civil engineering structure unit is lifted through the string member, it is possible not only to specifically obtain the same operation and effect as the above-described claim 6 in terms of transportation, but also to connect adjacent civil engineering structure units. In, the string member can be used.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show the first embodiment. In the first embodiment, 1 is a natural stone holding unit according to the present embodiment as a civil engineering structure unit to be laid on a bank wall, etc., and each natural stone holding unit 1 is a flexible sheet. A plurality of natural stones 3 are evenly arranged on one surface side of the nonwoven fabric 2 as a body, and each natural stone 3 is integrated with the nonwoven fabric 2 by an adhesive 4 such as an epoxy resin.

The nonwoven fabric 2 has a constant thickness, and in the present embodiment, the shape thereof is a square shape (for example, each side is 2 m) as shown in FIG. In this non-woven fabric 2, a portion having a constant length (for example, about 5 to 15 cm) from the outer edge to the inner side is the overlapping portion 5 in the entire circumference, and the natural stone 3 is not arranged in the overlapping portion 5. It has become. A plurality of holes 6 are formed in the overlapping portion 5 at intervals over the entire circumference of the nonwoven fabric 2, and a ring-shaped metal fitting 7 is attached to the periphery of each hole 6 for reinforcement. (See FIG. 6).

As the natural stone 3, not only cobblestone but also split stone is used, and the size thereof is 100 to 5 in diameter.
It is set to about 00 mm. A plurality of such natural stones 3 are prepared, and in the present embodiment, the plurality of natural stones 3 are arranged so as not to protrude into the overlapping portion 5, as shown in FIG.
As shown in FIG.

In constructing a revetment or the like using the natural stone holding unit 1, as shown in FIG. 3, first, the rope 8 as a string member is sequentially inserted into each hole 6 of the nonwoven fabric 2.
The rope 8 is passed through, and its both ends are bound and held at the peripheral edge of the nonwoven fabric 2.

Next, as shown in FIG. 3, a plurality of suspension fittings 9 are hooked on the rope 8 at appropriate places around the nonwoven fabric 2, and the natural stone holding unit 1 attaches the plurality of suspension fittings 9. Lifting means such as cranes (not shown)
Be lifted by. Then, the natural stone holding unit 1 is transported to the bank protection slope 10 (see FIG. 4) in the lifted state.

When the natural stone holding unit 1 is transported to the bank revetment slope 10, the natural stone holding unit 1 will be shown in FIGS.
As shown in FIG. 3, the natural stone holding unit 1 (nonwoven fabric 2) is overlapped with the overlapped portion 5 along the side of the natural stone holding unit 1 already laid on the revetment slope 10. It is put down (laid) so that it fits together. At this time, the hole 6 of the natural stone holding unit 1 already laid on the revetment slope 10 is used as a reference, and the natural stone holding unit 1 is almost aligned with the hole 6 of the natural stone holding unit 1. The holding unit 1 is lowered.

The natural stone holding unit 1 is the revetment slope 10
, The rope 8 is pulled out from the hole 6 of the natural stone holding unit 1, and the overlapping holes of the natural stone holding unit 1 and the natural stone holding unit 1 adjacent to the natural stone holding unit 1 are overlapped. Support bracket 1 on 6 (at each location)
1 is inserted into the revetment slope 10 and the heads of the support fittings 11 press the overlapping portions 5 of the natural stone holding units 1 against the revetment slope 10 to connect the natural stone holding units 1. (See FIG. 6). In this case, both holes 6
If the positions do not match due to deviation, the support fitting 11 is inserted from the hole 6 located on the upper side to the lower polymerized section 5 (nonwoven fabric 2) as it is, ignoring the position of the hole 6 on the lower polymerized section 5. You may type in. At that time, the support metal fitting 1
This is because the lower hole 6 into which 1 is to be inserted is covered by the upper overlapping portion 5 and does not come out to the outside, and earth and sand are not sucked out from the hole 6. Such construction (laying) is performed on the entire revetment slope 10, and the construction is completed.

In this case, the natural stone holding units 1 adjacent to each other
It is preferable to fill the narrow space on the overlapping portion 5 where the particles overlap with each other with filling stones or the like.

Further, in the first embodiment, the support fitting 11 is used to connect the natural stone holding units 1 adjacent to each other, but in addition to this, both holes 6 of the adjacent natural stone holding units 1 are formed. You may connect using a connection tool, without pulling out the rope 8 from each hole 6 of the natural stone holding unit 1,
Adjacent natural stone holding units 1 to each other
May be connected by using a connecting tool, a wire, or the like, or may be connected to both holes of adjacent natural stone holding units 1 (two adjacent holes are used in each natural stone holding unit 1). The natural stone holding units 1 may be connected by tying them through.

FIG. 7 shows the second embodiment, FIG. 9 shows the third embodiment, and FIGS. 10 and 11 show the fourth embodiment. In each of the embodiments, the same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the second embodiment, the covering portion 12 is provided on the other surface of the nonwoven fabric 2 in the natural stone holding unit 1. The covering portion 12 is formed by using a non-woven fabric or the like, and by using the covering portion 12, at least each hole 6 can be covered. This allows
As shown in FIG. 7, when the adjacent natural stone holding units 1 are connected to each other by using the string member 13 or the like, the covering portion 12 of the natural stone holding unit 1 already laid covers the hole 6 from the lower side. Will prevent the soil from being sucked out.
In addition, in this case, in each natural stone holding unit 1, the insertion hole for inserting the string member 13 and the return hole through which the string member 13 is returned to the original position are provided with two adjacent spaces. The holes 6 will be utilized. Further, reference numeral 14 is a filling stone placed on the overlapping portion 5.

FIG. 8 shows a modification of the second embodiment. In this modification, the covering portion 12 is provided on one surface side of the nonwoven fabric 2 in the natural stone holding unit 1,
As shown in FIG. 8, the covering portions 12 of the natural stone holding units 1 adjacent to each other are alternately superposed, and the covering portions 12 cover the hole 6 from the upper side to prevent sucking of earth and sand. Of course, in this case as well, the filling stone 1 is placed on the covering portion 12.
4 will be placed to prevent the covering 12 from rolling up.

Natural stone holding unit 1 according to the third embodiment
As shown in FIG. 9, the natural stones 3 are adhered to the rectangular nonwoven fabric 2 even in a pair of adjacent overlapping portions 5 while avoiding the holes 6, so that the overlapping portions 5 are inconspicuous. It is like this. As a result, the natural stone holding unit 1 is attached to the overlapping portion 5 of the natural stone holding unit 1 that has already been laid.
By stacking the overlapping portions 5 on which the natural stones 3 are provided, it is possible to eliminate the work of packing the natural stone holding units 1 after the connection of the natural stone holding units 1, while the natural stone holding unit 1 With respect to the overlapping portion 5 in which the natural stone 3 in FIG. 2 does not exist, the next new natural stone holding unit 1 superimposes the overlapping portion in which the natural stone 3 exists, so that the laying work can be sequentially and smoothly proceeded. It will be.

Natural stone holding unit 1 according to the fourth embodiment
In this case, not only the non-woven fabric 2 but also the non-woven fabric 2 and another element (frame line 21) cooperate to form the hole 6. That is, in the overlapping portion 5 of the natural stone holding unit 1, as shown in FIGS. 10 and 11, the peripheral edge portion of the rectangular non-woven fabric 2 is folded back inside and the folded tip end is sewn into the non-woven fabric 2 inside. A frame line passage 20 is formed integrally over the entire circumference of the nonwoven fabric 2, and a frame line (rebar etc.) 21 is formed in the frame line passage 20 along the outer peripheral edge of the nonwoven fabric 2. It is arranged. On the other hand, the superposition section 5
A plurality of arcuate notches 22 are formed in the outer peripheral edge of the so as to be cut out from the outside. This multiple notches 2
2 are arranged at regular intervals in the circumferential direction of the non-woven fabric 2, and the frame lines 21 in the frame line passage 20 are exposed to the outside through the respective notches 22, and the inner peripheral edges of the respective notches 22 are provided. The holes 6 are to be formed between the portion and the frame line 21, respectively. As a result, in the fourth embodiment, by utilizing the hole 6 or the frame line 21 formed by the inner peripheral edge of each notch 22 and the frame line 21, the same operational effect as the above-described embodiment (use for lifting) (Use as holes, connecting holes, etc.) can be obtained.

Although the embodiments have been described above, the present invention includes the following modes. A non-woven fabric (for example, a thickness of about 2 mm) is used as the flexible sheet body.
Degree) and a net-like sheet (for example, one side of the mesh of the net is about 15 mm), a two-layer structure, cloth material such as woven cloth,
Use vinyl resin sheet. Hook the hanging metal fitting 9 directly into the hole 6 of the natural stone holding unit 1. When connecting the adjacent natural stone holding units 1 with the string member 13, the two holes (the insertion hole and the return hole of the string member 13) 6 of each natural stone holding unit 1 through which the string member is passed are made as close as possible. To form. As the connecting tool for connecting the adjacent natural stone holding units 1 to each other, it is preferable to use a clip or the like which can integrate the both 1 by simply inserting them into the holes 6 of the both 1. The connection points between the adjacent natural stone holding units 1 should be appropriately set, such as the four corners. As artificial stone, use artificial stone such as pseudo stone (made of concrete) instead of natural stone. When attaching each natural stone (stone) 3 to the non-woven fabric 2, instead of using the adhesive itself, one using both the adhesive and the connecting tool (for example, anchor), the connecting tool is directly connected to the natural stone 3. Which connects the connector to the nonwoven fabric 2,
The natural stone 3 is connected with a connecting tool via an adhesive, and the connecting tool is connected to the non-woven fabric 2, the connecting tool connected to the natural stone 3 is directly connected to the non-woven fabric 2, and the natural stone 3 is connected. Taking various attachment means for attaching in a non-separable state such as connecting the connecting tool to the non-woven fabric 2 via an adhesive.

It should be noted that the object of the present invention is not limited to what is specified, but also implicitly includes providing what is substantially preferred or described as an advantage.

[Brief description of drawings]

FIG. 1 is a plan view showing a natural stone holding unit according to a first embodiment.

FIG. 2 is a view showing a state in which a plurality of natural stones are bonded to a non-woven fabric with an adhesive.

FIG. 3 is a perspective view illustrating a natural stone holding unit in a lifted state according to the first embodiment.

FIG. 4 is an explanatory view illustrating a seawall constructed by laying a natural stone holding unit on the slope of the seawall.

FIG. 5 is a plan view showing the laying of a natural stone holding unit on a bank wall.

FIG. 6 is a partially enlarged cross-sectional view illustrating the connection between the natural stone holding units according to the first embodiment.

FIG. 7 is a partially enlarged cross-sectional view illustrating a second embodiment.

FIG. 8 is a partially enlarged cross-sectional view illustrating a modified example of the second embodiment.

FIG. 9 is a plan view showing a natural stone holding unit according to a third embodiment.

FIG. 10 is a plan view showing a natural stone holding unit according to a fourth embodiment.

11 is an enlarged cross-sectional view taken along line XX of FIG.

[Explanation of symbols]

1 Natural stone holding unit 2 non-woven fabric 3 natural stones 4 adhesive 5 superposition section 6 holes 7 Ring-shaped metal fittings 8 rope 9 hanging metal fittings 12 Cover

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-8-151620 (JP, A) JP-A-59-74890 (JP, A) JP-B-55-45684 (JP, B2) Jpn. 31101 (JP, Y2) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02B 3/12 E02B 3/14 E02D 17/20

Claims (8)

(57) [Claims] 1. A unit for civil engineering construction in which a plurality of stones are mounted on a flexible sheet body, wherein the flexible sheet body is free of the stones. A plurality of holes are provided at intervals in the circumferential direction of the flexible sheet body over the entire circumference of the flexible sheet body in the vicinity of the peripheral portion of the body. A unit for civil engineering construction. 2. The civil engineering structure unit according to claim 1, wherein the flexible sheet body is formed in a rectangular shape. 3. The civil construction unit according to claim 1, wherein each of the holes is provided with a ring-shaped metal fitting around the hole. 4. The civil construction unit according to claim 1, wherein the flexible sheet body is provided with a coating portion capable of coating at least the holes. 5. The civil construction unit according to claim 1, wherein the flexible sheet body is formed of a non-woven fabric. 6. A flexible sheet having a plurality of stones mounted on the flexible sheet body, wherein the flexible sheet body is free of the stones.
A unit for civil engineering construction in which a plurality of holes are provided at intervals in the circumferential direction of the flexible sheet body over the entire circumference of the flexible sheet body in the vicinity of the peripheral portion of the flexible sheet body. Prepared, each of the holes, during the transportation of the civil engineering unit,
Use as a lifting use hole, and when laying the civil engineering structure unit, use as a connecting hole between adjacent civil engineering structure units, for civil engineering structures
How to use the unit . 7. The unit for civil engineering structures according to claim 6, wherein, when the holes are used as lifting use holes, hooks of lifting means are hooked directly to the holes. how to use. 8. The elastic member according to claim 6, wherein when the holes are used as lifting holes, a string member is passed through the holes to hold the string member in a flexible sheet body. A method of using the unit for civil engineering structure, comprising lifting the unit for civil engineering structure through the above.