JPH10331130A - Revetment structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a revetment structure which allows forming large the internal space so that the amount of a filler to fill it is increased, enables mainte nance of the natural environment through keeping good water permeability thereby, ensures easy execution of works in construction, imposes no restriction on the size, etc., of the filler, and allows reducing the construction costs for revetment including the material transporting costs. SOLUTION: A cylindrical member is formed from a steel material consisting of an expand metal having regular hexagonal section furnished at the peripheral wall with a number of through holes, and a plurality of such cylindrical members are installed on a revetment structure, wherein adjoining cylindrical members are coupled together. Each cylindrical member 1 is filled with a filler consisting of crushed stones, etc., and side plate 11, top plate 13a, and bottom plate 13b made from steel plates furnished with a number of through holes are coupled together by coupling tools 14a, 14b, 14c made from wires formed spirally.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to rivers, lakes, coasts,
Seawalls, valleys, and the like (in this specification, they may be simply referred to as “rivers,” etc.)
Sometimes simply referred to as “bank protection structure”. ), In particular,
This is related to revetment structures aimed at preserving the natural environment.

[0002]

2. Description of the Related Art Conventionally, when a seawall such as a river is formed, concrete is poured along with the slope or a concrete block is installed along the slope to protect the slope. However, with the recent trend of preserving the natural environment, the method of using the above-mentioned conventional concrete is being reviewed, and the development of a method suitable for the natural environment has been demanded.

[0003]

In response to the demand for preserving the natural environment, a hollow concrete block in which a filler such as crushed stone can be filled has been proposed and put into practical use. I have.

However, since this block is made of concrete and is heavy and difficult to handle, not only is the workability at the time of construction inferior, but also the interior space is formed too large due to the strength required for the block. Therefore, the amount of filler that can be filled into the block is limited, and the purpose of preserving the natural environment by maintaining water permeability has not been completely achieved.

Further, in the case of a concrete block, a large number of small holes cannot be formed in the peripheral wall of the block. In many cases, the material cannot be used, and there has been a problem that the construction cost of the revetment including the transportation cost of the material increases.

The present invention addresses the problems of the conventional methods of casting concrete and installing concrete blocks and the hollow concrete blocks capable of being filled with a filler such as crushed stone. In view of the above, the amount of filler to be filled is increased by forming a large internal space, thereby maintaining good water permeability and preserving the natural environment. It is an object of the present invention to provide a revetment structure in which there is no restriction on the size of the lumber and the construction cost of the revetment including the transportation cost of the material can be reduced.

[0007]

In order to achieve the above object, a revetment structure according to the present invention comprises a steel tubular body having a large number of through holes formed in a peripheral wall laid on a revetment and adjoining tubular bodies. In the revetment structure where filler such as crushed stones is filled inside the tubular body, a steel tubular body is converted from a wire rod to a steel plate-like body with many through holes. Characterized in that they are connected by a connecting tool. in this case,
"River, etc." includes lakes, coasts, mountains, valleys, etc. in addition to rivers, and revetment structures include slopes, shallow riverbeds,
This shall include the structure of the lake bottom and the sea bottom.

In this revetment structure, the required strength can be easily obtained only by laying a steel tubular body having a large number of through holes in the peripheral wall on the revetment and adjusting the thickness of the steel material used. It is possible to form a large internal space and increase the amount of filler to be filled, thereby maintaining good water permeability and preserving the natural environment. In addition, since the steel tubular body is configured by connecting a steel plate-like body having a large number of through-holes with a connecting member made of a wire, the weight is smaller than that of the concrete block. It is small and easy to handle, and the work of assembling the tubular body and the work of connecting adjacent tubular bodies can be easily performed on site as necessary, and the workability during construction is high, and Only by adjusting the size of the through hole formed in the peripheral wall, it is possible to cope with various kinds of fillers, and it is possible to reduce the cost of constructing the revetment including the transportation cost of the material.

In this case, expanded metal can be used for the plate-like body constituting the tubular body.

[0010] Thus, a through-hole of any size can be easily formed in the peripheral wall of the cylindrical body, and the manufacturing cost of the cylindrical body can be further reduced.

Further, a spirally formed wire can be used for the connecting member.

[0012] Thus, the assembling work of the tubular body can be easily and reliably performed at the site as necessary without using special tools, and the workability at the time of construction is high. The cost of construction of revetments, including transportation costs, can be reduced.

Further, the cross-sectional shape of the cylindrical body can be formed into a regular polygon, preferably a regular hexagon.

[0014] This makes it possible to easily connect the tubular bodies, and in particular, when the tubular body has a regular hexagonal cross section, the seawall structure can be a honeycomb structure.
A structure that is strong against external force can be configured.

Further, at least a part of the peripheral wall of the cylindrical body is
It can be constituted by the peripheral wall of the adjacent cylindrical body.

[0016] Thereby, it is possible to eliminate the overlap of the peripheral walls of the adjacent cylindrical bodies and improve the water permeability,
The material cost can be saved, and the manufacturing cost of the tubular body can be reduced.

Further, a net can be provided on the upper surface and / or the lower surface of the cylindrical body.

Thus, it is possible to prevent the filler filled in the inside of the tubular body from flowing out.

Further, a frame member made of a wire can be provided on the upper surface and / or the lower surface of the cylindrical body.

Thus, the cylindrical body can be assembled firmly.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a revetment structure according to an embodiment of the present invention.

FIG. 1 shows a first embodiment in which the seawall structure of the present invention is applied to seawall protection. In this revetment structure, as shown in FIG. 2, a steel tubular body 1 having a large number of through holes formed in a peripheral wall 11 is laid on a slope 3 and a riverbed 4, and the laid tubular body 1 acts on flowing water. The adjacent cylindrical bodies 1 are connected to each other by fasteners such as wires, bolts and nuts, welding, or the like so that the cylindrical bodies 1 do not move, and the inside of the cylindrical body 1 is filled with a filler 2 such as crushed stone. It is composed.

In the present embodiment, the cylindrical body 1 to be laid on the slope 3 is provided with a step at the top so as to be laid in steps, but is not limited to this. It may be laid in a plane so as to be parallel to the surface 3.

The cylindrical body 1 laid on the riverbed 4 is provided with, for example, several cylindrical bodies 1A protruding at intervals of a height such that the height of the top part differs between adjacent cylindrical bodies. As a result, the scenery can be given an accent and the running water can be buffered.
A cover having a large number of through-holes formed on the surface thereof as necessary so that the filler 2 such as crushed stone filled into the inside of the tubular body 1 does not flow into the tubular body 1 laid on the riverbed 4. A plate (not shown) can be provided.

The cylindrical body 1 is formed with a number of cuts in a steel plate having a thickness of about several mm to 10 mm in accordance with the use environment, required strength, and the like, and is formed to form a large number of through holes by extending the cuts. A plate-like body made of expanded metal, which is connected so as to have a regular hexagonal cross section, is used. In this case, the size of the through hole formed in the peripheral wall 11 of the tubular body 1 can be arbitrarily set according to the size of the filler to be filled therein. In this embodiment, the tubular body 1 is formed so that the cross-sectional shape becomes a regular hexagon, and thereby the seawall structure is made to be a honeycomb structure. However, the sectional shape of the tubular body is not limited to this. Instead, any shape such as a polygon such as a triangle and an octagon, and a cylinder can be adopted.

As shown in FIG. 3, the cylindrical body 1 is provided on the upper and lower surfaces of a filler 2 such as crushed stone filled in the cylindrical body 1.
By disposing the top plate 13a and the bottom plate 13b made of a net made of a metal such as expanded metal or a synthetic resin, it is possible to prevent the filler 2 filled in the cylindrical body 1 from flowing out. . In this case, only one of the top plate 13a and the bottom plate 13b made of a mesh body can be provided.

Further, as shown in FIG. 4 (a), at least a part of the peripheral wall of the cylindrical body 1 is omitted to constitute the cylindrical body 1, and the omitted peripheral wall is replaced with the peripheral wall of FIG. 4 (b). As shown in (1), it can be constituted by the peripheral wall 11 of the adjacent cylindrical body 1. Thereby, the overlap of the peripheral walls 11 of the adjacent cylindrical bodies 1 can be eliminated, the water permeability can be improved, the material cost can be saved, and the manufacturing cost of the cylindrical body 1 can be reduced.

In this case, when forming the cylindrical body 1 so that the cross-sectional shape becomes triangular, hexagonal, octagonal, etc., for example, as shown in FIG. The side plate 11, the top plate 13a, and the bottom plate 13b, which are formed of a steel plate, formed in a spiral shape (for example, φ20 to 50 mm) (for example, φ1
~ 14mm, 14b, 14 made of steel wire
It can be configured to be connected by c.

In forming the cylindrical body 1 so that its cross-sectional shape becomes triangular, hexagonal, octagonal, etc., as shown in FIG. 6, in addition, as shown in FIG. The side plates 11 formed of the formed steel plate-like bodies, and the side plates 11, and a wire (for example, φ2 to 10 mm)
Of the upper frame material 15a and the lower frame material 15b made of a spiral wire.
b, 14c, as shown in FIG. 7, or as shown in FIG. 7, a side plate 11, a top plate 13a and a bottom plate 13b made of a steel plate having a large number of through holes made of expanded metal or the like.
A side frame member 11a made of a wire material (for example, a steel wire having a diameter of 2 to 10 mm) fixed to the periphery thereof by welding or the like.
Along with the upper frame material 15a and the lower frame material 15b, they can be configured by being connected by connecting tools 14a, 14b, 14c made of a spirally formed wire. Further, the cylindrical body 1 can be formed by appropriately combining the above-described configurations.

Each embodiment showing a method of forming the above-mentioned cylindrical body 1 so that the cross-sectional shape becomes triangular, hexagonal, octagonal, etc. is similar to that shown in FIG. At least a part of the peripheral wall of the body 1 is omitted, and the cylindrical body 1 is constituted by the peripheral wall (side plate) 11 of the adjacent cylindrical body 1. However, as shown in FIG. The tubular body 1 can be configured without being omitted. In addition, the connecting tool made of wire is
It is not always necessary to form a spiral, and a number of connecting members (not shown) made of a wire formed in a ring shape can be used.

As described above, the cylindrical body 1 is formed by connecting steel plate-like bodies having a large number of through holes by the connecting members 14a, 14b, 14c formed of spirally formed wires. Thus, the assembling work of the tubular body 1 and, if necessary, the connecting work between adjacent tubular bodies can be easily performed on site.

When the peripheral wall 11 of the tubular body 1 is formed of a member having a large number of through holes such as expanded metal, the above-mentioned helical fastener is used as a fastener for connecting adjacent tubular bodies 1 to each other. In addition to wires formed on
A nut or a dedicated fastener 7 such as shown in FIG.
Etc. can be used. The fastener 7 includes a fastener body 71 having fixed pieces 71a, 71a formed at upper and lower ends, and a key piece 72. The fastener 7 is attached to the peripheral wall 11 in a state where the peripheral walls 11 of the adjacent tubular bodies 1 are overlapped. The fixing pieces 71a, 71a of the fastener main body 71 are inserted into the formed through holes, and the fixing pieces 71
key pieces 71b, 71b formed in key holes 71b, 71b.
2 are inserted to connect adjacent cylindrical bodies 1 to be integrated.

The inside of the cylindrical body 1 is usually provided with the structure shown in FIG.
As shown in the figure, the crushed stones 21 are uniformly filled, but the filler 2 to be filled depends on the state of the slope 3 and the riverbed 4 where the tubular body 1 is laid, and other incidental requests. It can be arbitrarily selected depending on the situation. For example, when a local material is used, for example, when pebbles or sand having a particle size smaller than the size of the through hole formed in the peripheral wall 11 of the cylindrical body 1 are used, FIG.
As shown in (b), after arranging a water-permeable non-woven fabric made of natural fiber or synthetic resin fiber on the inner peripheral surface of the peripheral wall 11 of the cylindrical body 1, the granular material 22 such as pebbles and sand is filled. To do. Also, when purifying river water at the same time,
As shown in FIG. 9 (c), crushed stones 21a, 21
b and the purification material 24 such as charcoal are filled in a layered or mixed state. Further, as shown in FIG.
A non-woven fabric layer 25 made of natural fibers or synthetic resin fibers and having water permeability can be formed on the upper surface of the crushed stone 21 filled with the water.

FIG. 10 shows a second embodiment in which the seawall structure of the present invention is applied to seawall protection. In this seawall structure, a steel tubular body 1 having a large number of through holes formed in a peripheral wall is laid on a slope 3 and a riverbed 4 via a net 5 made of a metal such as expanded metal or a synthetic resin. In order to prevent the laid tubular body 1 from moving due to the action of flowing water or the like, the adjacent tubular bodies 1 are connected to each other by fasteners such as wires, bolts and nuts, welding, or the like, and the inside of the tubular body 1 is also connected. Is filled with a filler 2 such as crushed stone. Thereby, it is possible to prevent the filler 2 filled in the cylindrical body 1 from flowing out. In this case, a similar net (not shown) can be provided on the upper surface of the tubular body 1. Other configurations of the seawall structure of the present embodiment are the same as those of the seawall structure of the first embodiment.

FIG. 11 shows a third embodiment in which the revetment structure of the present invention is applied to a revetment (revetment) of a river. In this seawall structure, a steel tubular body 1 having a large number of through-holes formed in a peripheral wall is laid on a riverbed 4, and the laid tubular body 1 is positioned adjacent to the tubular body 1 so as not to move due to the action of flowing water or the like. The bodies 1 are connected to each other by fasteners such as wires, bolts and nuts, welding, or the like, and the inside of the cylindrical body 1 is filled with a filler 2 such as crushed stone. In this case, a cylindrical body 1 having a regular hexagonal cross section is used, and the surfaces of the adjacent cylindrical bodies 1 are connected to each other in a direction perpendicular to the flow to form a cylindrical body row 10, and in the flow direction, The sides of the adjacent cylindrical body rows 10 are connected by abutting each other, and the space formed between the adjacent cylindrical body rows 10 is filled with the filler 2 such as crushed stone. Thus, since the cylindrical body row 10 is formed by connecting at least the surfaces of the adjacent cylindrical bodies 1, it is possible to reliably prevent the cylindrical body 1 from moving due to flowing water. Other configurations of the seawall structure of the present embodiment are the same as those of the seawall structure of the first embodiment.

FIG. 12 shows a fourth embodiment in which the revetment structure of the present invention is applied to a revetment (revetment) of a river. In this seawall structure, a steel tubular body 1 having a large number of through-holes formed in a peripheral wall is laid on a riverbed 4, and the laid tubular body 1 is positioned adjacent to the tubular body 1 so as not to move due to the action of flowing water or the like. The bodies 1 are connected to each other by fasteners such as wires, bolts and nuts, welding, or the like, and the inside of the cylindrical body 1 is filled with a filler 2 such as crushed stone. In this case, a cylindrical body 1 having a regular hexagonal cross section is used, and the surfaces of the adjacent cylindrical bodies 1 are connected to each other in a direction perpendicular to the flow to form a cylindrical body row 10, and in the flow direction, The surfaces of the adjacent cylindrical body rows 10 are connected so as to partially overlap each other, and the space formed between the adjacent cylindrical body rows 10 is filled with the filler 2 such as crushed stone. Accordingly, the cylindrical body 1 can be laid along the meandering of the river, and at least the surfaces of the adjacent cylindrical bodies 1 are connected to form the cylindrical body row 10.
It is possible to reliably prevent the tubular body 1 from moving due to running water. Other configurations of the revetment structure of the present embodiment include:
This is the same as the revetment structure of the first embodiment.

The connection and laying of the cylindrical members are not limited to those described in the above embodiments. For example, in order to prevent the cylindrical members from moving due to running water, the adjacent cylindrical members are laid. The cylindrical body row formed by connecting the surfaces of each other is laid in a fan shape along the meandering of the river, and the space formed between the adjacent cylindrical body rows is filled with a filler such as crushed stone or the like. Can be adopted.

Although the example in which the revetment structure of the present invention is applied to the revetment (revetment) of a river has been described above, the target of the revetment structure of the present invention is not limited to the revetment of a river, and a lake, a shore,
For example, a bank, a valley, a slope (a riverbed having a shallow depth of water, a lakebed, and a seabed portion. In this case, a purification structure of a water area). FIG.
15 and FIG. 15 and FIG. 16 can be widely applied to this type of civil engineering structure. Further, in the case of the soil retaining and retaining wall shown in FIG. 15 and FIG. Vegetation 6 can be applied as needed.

[0039]

According to the revetment structure of the present invention, the required strength is obtained only by laying a steel tubular body having a large number of through holes in the peripheral wall on the revetment and adjusting the thickness of the steel material used. Can be easily obtained, and the amount of filler to be filled by forming a large internal space is increased, thereby maintaining good water permeability and providing a rich natural environment where underwater organisms such as fish and insects can easily live. Can be preserved. In addition, since the steel tubular body is configured by connecting a steel plate-like body having a large number of through-holes with a connecting member made of a wire, the weight is smaller than that of the concrete block. It is small and easy to handle, and the work of assembling the tubular body and the work of connecting adjacent tubular bodies can be easily performed on site as necessary, and the workability during construction is high, and Only by adjusting the size of the through hole formed in the peripheral wall, it is possible to cope with various kinds of fillers, and it is possible to reduce the cost of constructing the revetment including the transportation cost of the material.

Further, by using expanded metal for the plate-like body constituting the tubular body, a through-hole of an arbitrary size can be easily formed in the peripheral wall of the tubular body, and the production of the tubular body can be facilitated. Costs can be reduced.

Further, by using a spirally formed wire for the connecting member, the assembling work of the tubular body can be easily and reliably performed on site, if necessary, without using special tools. It can be carried out at a high workability at the time of construction, and the construction cost of the revetment including the transportation cost of the material can be reduced.

Further, by forming the cross-sectional shape of the tubular body into a regular polygon, preferably a regular hexagon, the tubular bodies can be easily connected, and in particular, the sectional shape of the tubular body is a regular hexagon. In the case of forming the seawall, the seawall structure can be a honeycomb structure, and a structure strong against external force can be formed.

Further, at least a part of the peripheral wall of the cylindrical body is
With the configuration using the peripheral wall of the adjacent cylindrical body, the overlapping of the peripheral wall of the adjacent cylindrical body can be eliminated, the water permeability can be improved, the material cost can be reduced, and the manufacturing cost of the cylindrical body can be reduced. Can be reduced.

Further, by disposing the net on the upper surface and / or the lower surface of the cylindrical body, it is possible to prevent the filler filled in the cylindrical body from flowing out.

Further, by disposing a frame member made of a wire on the upper surface and / or lower surface of the cylindrical body, the cylindrical body can be firmly assembled.

[Brief description of the drawings]

FIG. 1 is a first example in which a seawall structure of the present invention is applied to seawall protection of a river.
It is an external appearance perspective view which shows an Example.

FIGS. 2A and 2B show an example of a tubular body, wherein FIG. 2A is a plan view and FIG.
Is a front view.

3A and 3B show an example of a tubular body, wherein FIG. 3A is a plan view and FIG.
Is a front sectional view. FIG.

FIG. 4 is an explanatory view showing a tubular body, (a) is a perspective view,
(B) is a top view showing the state where a plurality of cylindrical bodies were connected.

FIG. 5 is an explanatory view showing an example of a method of assembling a cylindrical body.

FIG. 6 is an explanatory view showing an example of a method of assembling a cylindrical body.

FIG. 7 is an explanatory view showing an example of a method of assembling a tubular body.

FIG. 8 is an explanatory view showing an example of a fastener.

FIG. 9 is an explanatory view showing a cylindrical body.

FIG. 10 is an external perspective view showing a second embodiment in which the seawall structure of the present invention is applied to seawall protection.

11A and 11B show a third embodiment in which the revetment structure of the present invention is applied to a revetment (revetment) of a river, where (a) is a plan view and (b) is a side view.

FIG. 12 is a plan view showing a fourth embodiment in which the revetment structure of the present invention is applied to a revetment (revetment) of a river.

13A and 13B show an embodiment in which the seawall structure of the present invention is applied to a bank, wherein FIG. 13A is a front view and FIG. 13B is a side view.

14A and 14B show an embodiment in which the revetment structure of the present invention is applied to a valley stop, wherein FIG. 14A is a front view, and FIG. 14B is a side view.

15 shows an embodiment in which the seawall structure of the present invention is applied to a retaining wall and a retaining wall, (a) is a plan view, and (b) is a side view.

16A and 16B show an embodiment in which the seawall structure of the present invention is applied to a retaining wall and a retaining wall, wherein FIG. 16A is a plan view and FIG. 16B is a side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical body 10 Cylindrical body row 11 Peripheral wall 11a Side frame material 13a Top plate 13b Bottom plate 14a, 14b, 14c Connector 15a Upper frame material 15b Lower frame material 2 Filler 3 Slope 4 River bottom 5 Mesh body 6 Vegetation 7 Fastening Ingredient

Claims (8)

[Claims] 1. A steel tubular body having a large number of through-holes formed in a peripheral wall is laid on a seawall to connect adjacent tubular bodies and fill the inside of the tubular body with a filler such as crushed stone. A revetment structure comprising a steel tubular body formed by connecting a steel plate-like body having a large number of through holes with a connecting member made of a wire. 2. The seawall structure according to claim 1, wherein an expanded metal is used for the plate-like body constituting the cylindrical body. 3. The revetment structure according to claim 1, wherein a spirally formed wire is used as the connecting tool. 4. The seawall structure according to claim 1, wherein the cross-sectional shape of the tubular body is formed into a regular polygon. 5. The seawall structure according to claim 4, wherein the cross-sectional shape of the cylindrical body is formed in a regular hexagon. 6. The seawall structure according to claim 4, wherein at least a part of the peripheral wall of the cylindrical body is constituted by the peripheral wall of an adjacent cylindrical body. 7. The cylindrical body is provided with a net on an upper surface and / or a lower surface thereof.
Or the revetment structure according to 6. 8. A frame member made of a wire is disposed on an upper surface and / or a lower surface of a cylindrical body.
The revetment structure according to 2, 3, 4, 5, 6, or 7.