JP2000129650A - Paving stone segment for revetment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paving stone segment capable of preventing the scour of soil dressing even if it is applied to low waters and a steep slope and contributing to the stable maintenance of a multi-natural type revetment. SOLUTION: A natural stone 3 such as granite or the like and a partition plate 4 are arranged on an upper surface 2b of a concrete base 2 forming a mounting surface 2a for a slope B of a revetment A in the shape of a rectangle to fix, and when the base 2 is laid on the slope B, the upper surface 2b of the base 2 is in a horizontal state, and the stone 3 is erected in the vertical direction. After a plurality of paving stone segments 1 are contacted to each other and are laid on the slope B, the filling of soil dressing is made on the upper surface 2b of the base 2, the stone 3 is used as an earth retaining wall to form a stepped slope, plants are planted thereon to form the multi-natural type revetment, and the scour of soil dressing is prevented by the stone 3 and partition plate 4 under this state of things.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pavement segment used for revetment, and more particularly to a pavement segment suitable for maintenance of a natural revetment.

[0002]

2. Description of the Related Art In recent years, diversification of revetments has been promoted for the purpose of preserving the natural environment and creating a comfortable waterside space. Conventionally, in order to make the revetment more natural, a method was generally adopted in which stones were stacked or laid so as to have gaps between them, and the gaps between the stones were used as habitats for fish, small animals, or plants. However, according to such a construction method, it is necessary to perform cumbersome work of stacking or laying individual stone materials at the construction site, and not only takes a long time for the construction, but also heavy lifting work, unsafe work is required and safety and sanitation is also required. There was a problem that it was not preferable.

Therefore, for example, Japanese Patent Application Laid-Open No. 7-82720 discloses a method in which a plurality of natural stones are laid on a wire mesh or mesh that is superposed on the upper surface of a suction-prevention sheet, and these stones are integrated via an adhesive. Japanese Patent Application No. 9-158150 (unknown) discloses a paving stone plate in which a large number of paving stones are fixed on a grid-like frame via an adhesive. According to these natural stone wire meshes or paving stone plates, a large number of stones can be installed on the revetment with a predetermined gap at a time, so that the cumbersome work of stacking or attaching individual stones is unnecessary,
The revetment can be multi-naturalized with high efficiency.

[0004]

However, according to the above-mentioned natural stone wire mesh or paving stone plate, the whole is flat, and when this is placed on the slope of the revetment, the upper surface of the revetment is raised. When applied to slopes with low water and steep slopes at the same angle as the slopes, the soil filled in the gaps between the stones is easily scoured by river water and rainwater, and is used for environmental protection and seawall protection. The problem remained in terms of aspects.

[0005] The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to prevent scouring of soil in a low water area even when applied to a steep slope. To provide a cobblestone segment that greatly contributes to maintaining the stability of the natural revetment.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a base having a rectangular mounting surface with respect to a slope of a revetment, and a base on the base along one ridge line of the mounting surface. And a plurality of stones arranged and fixed in at least one row, and the stones are directed at least downward in a state where the base is placed on the slope of the revetment such that the stones are on the lower side of the slope. The raised surface stands substantially vertically.

According to the revetment paving stone segment constructed as described above, the base material is placed on the slope of the revetment so that the stone material is inclined downward, and a plurality of the base materials are laid so as to be connected to each other. As a retaining wall, the soil can be piled up in a stepwise manner, and scouring of the soil by river water or rainwater can be prevented. Moreover, the stone is provided as a step wall of the stairs, so that the landscape is not impaired.

According to the present invention, the base is made of a solid block made of concrete, the upper surface of which is substantially horizontal with the upper surface being placed on the slope of the revetment. The solid block may be fixed substantially vertically to the upper surface. With this configuration,
Even if a plate-like stone material is used, it is not necessary to apply special processing to the stone material since the plate surface stands upright in the vertical direction.

According to the present invention, the base is composed of a plate-shaped frame and a perforated plate stretched on the back of the frame, and a prism-shaped stone material is fixed to the upper surface of the frame. be able to. In this case, since the entire surface under the base has a permeable structure, not only water permeation becomes smooth, but also the root can be freely extended through the permeable portion, so that plant growth proceeds.

According to the present invention, the base is composed of a plate-shaped frame and a porous cage integrated with the back surface of the frame, and a stone material formed in the shape of a prism is fixed to the upper surface of the frame. It can be. In this case, the cage can be used as a storage space for rubble, such as cobblestone, crushed stone, and crushed concrete fragments, so that it is not necessary to form a rubble mound on the slope of the revetment in advance.

[0011] The present invention may further comprise a structure in which at least one partition plate is fixed on the base in such a manner as to intersect with the direction in which the stones are arranged. Is regulated, and scouring can be prevented more reliably.

In the present invention, it is desirable to use natural stones such as granite and limestone, particularly granite, as the stone material. Granite is extremely advantageous in terms of durability because it is 5-6 times as strong as concrete and has excellent weathering resistance. In addition, it has excellent aesthetics and greatly contributes to the naturalization of seawalls. Will do.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 4 show a revetment paving stone segment according to a first embodiment of the present invention.
The paving stone segment 1 has a rectangular lower surface 2a and an upper surface 2 which are arranged obliquely so that one-side ridge lines approach each other.
b, and the lower surface 2 of the upper surface 2b of the base 2
a (herein, four) plate-like stone materials 3 arranged and fixed along the ridge near the ridge opposite to the side approaching a.
And a single partition plate 4 which is arranged and fixed at a position on the upper surface 2b of the base 2 which bisects the longitudinal direction at a position bisecting the longitudinal direction.

The paving stone segment 1 is a slope B of a seawall A
The lower surface 2a of the base 2 is laid on the base 2 (FIG. 1). The angle between the lower surface 2a and the upper surface 2b of the base 2 is set to be equal to the inclination angle α of the slope B. On the other hand, the stone 3 is fixed substantially perpendicularly to the upper surface 2b with its lower end inserted into a fitting groove 5 provided in the upper surface 2b of the base 2. Therefore, the lower surface 2a of the base 2
When the base 2 is placed on the slope B such that the tip on the side where the and the upper surface 2b approach approaches the slope B, not only the upper surface 2b of the base 2 becomes substantially horizontal, but also the stone 3 Both surfaces stand vertically (FIG. 1).

The base 2 has a lower surface 2 at its front and rear ends.
The vertical surfaces 2c and 2d which stand upright with respect to a are arranged.
Accordingly, when a plurality of bases 2 are placed in the same direction on the slope B of the seawall A, as shown in FIG. 1, the vertical surfaces 2c and 2d are mutually aligned between the front and rear (up and down) bases 2. Can be connected. That is, the paving stone segment 1 can be densely laid with the bases 2 abutting each other on the slope B of the seawall A, whereby the upper surface 2b of the base 2 can be stepped on the slope B. Become arranged. Here, stopper pieces 6 are provided on left and right edges of the upper surface 2b of the base 2 and protruding pieces 7 are provided on left and right edges of the rear face 2e of the base 2, respectively. The base 2 engages the stopper piece 6 and the projecting piece 7 with each other, and attaches the projecting piece 7 to the upper surface 2 of the rear base 2.
b and are connected to each other.
In addition, longitudinal grooves 9, 9 that cooperate with each other to form a drain hole 8 are provided at the front end and the rear end of each base 2.

The base 2 is made of a solid block made of concrete here, and the fitting groove 5, the stopper piece 6, the projecting piece 7, the vertical groove 9 and the like are also integrally formed. On the other hand, the stone material 3 is made of granite here, and at least three surfaces except for the insertion portion 3a (FIG. 4) and the side surface with respect to the fitting groove 5 of the base 2 are finished with split skin.
Further, the stone 3 is bonded and fixed to the base 2 by inserting the insertion portion 3a into the fitting groove 5 via an adhesive such as an epoxy resin. Further, various materials such as wood, metal material, concrete, and the like can be used for the partition plate 4. When a metal material is used, it is preferable to use a material that has been subjected to rust prevention treatment such as galvanization or a stainless steel material. desirable. In the present embodiment, the size of the base 2 and the stone material 3 is arbitrary, but as an example, the base 2 has a width W and a length L of the bottom surface 2a and a total maximum height H of W = 1 m, respectively. , L = 2m, H = 0.
The size of the stone 3 is set to about 35 m, and the projecting height h from the base upper surface 2b is set to about 0.5 m. In addition, the partition plate 4 has a height of about half of the projecting height h of the stone 3.

In order to use the paving stone segment 1 for improvement of the revetment A, as shown in FIG. 5, a paving stone plate 10 which is separately formed is laid in advance at a connecting portion between the riverbed C and the slope B, and this paving stone plate is used. The paving stone segments 1 are successively laid in a manner shown in FIG. At this time, the paving stone plate 10
A filler 11 such as crushed stone, cement, or the like is filled in a joint between the stone and the paving stone segment 1. And after this laying,
On the base 2, for example, the pebbles 12 and the soil 13 are supplied in a layered manner, and the soil 13 is raised to almost the same level as the upper end of the stone 3. As a result, a step-like slope appears on the slope B of the revetment A, and then plant seeds are seeded on the soil 13 or seedlings are transplanted. As a result, plants 14 prosper around the low water area, and the surroundings of the plants 14 are provided as fish habitats in the underwater part and small animal habitats in the land part. Appear. In this case, since the flat stone material 3 of each paving stone segment 1 functions as a retaining wall, scouring of the soil 13 by river water or rainwater is prevented.

In the first embodiment, in particular, since the partition plate 4 on the base 2 regulates the flow of the soil 13 in the flow direction of the river water, scouring of the soil 13 is more reliably prevented. You. In addition, the stone material 3 made of granite is provided as a step wall, so that the scenery is very good. Moreover, even if the plate-shaped stone 3 is used, the plate 3 stands upright in a state where the base 2 is placed on the slope B, so that the manufacture of the stone 3 is simplified. Further, in case of flooding due to river water or rainfall, water permeation occurs through the drain holes 8 and the gaps between adjacent paving stone segments, and at this time, water flows through the gaps in the layers of the soil 13 and the gravel 12. By circulating, the purification of water quality by the so-called gravel contact progresses, which will also positively contribute to the purification of river water. On the other hand, in the dry season and the like, since water is lifted from the soil of the seawall A on the back side through the drainage holes 8 and the like, the securing of moisture, nutrients, and the like becomes sufficient,
The ecological environment is not compromised.

The number of the partition plates 4 provided on the base 2 is arbitrary, and two or more partition plates 4 may be provided. In addition, when applying the paving stone segment 1 to a dry area such as a middle water area or a high water area,
This partition plate 4 can be omitted. In addition, the first
In the embodiment of the present invention, the minimum unit in which the stones 3 are arranged in one row on one base 2 is used as the minimum unit, but the stones 3 may be arranged in a plurality of rows on one base in common. Good. In this case, the upper surface (2
Step (b) is formed in a step shape, and the stone 3 and the partition plate 4 are arranged and fixed on each step in the same manner as in the above embodiment. As a result, the construction area per paving stone segment is increased, and revetment improvement can be completed in a short period of time.

FIGS. 6 to 9 show a revetment paving stone segment according to a second embodiment of the present invention.
The paving stone segment 20 is laid on the slope B of the revetment A (FIG. 6) similarly to the paving stone segment 1 in the first embodiment, and has a rectangular (here, square) plate-like base 21. A plurality (here, four) of first stone materials 22 arranged and fixed along one ridge line of the base 21
A plurality of (here, four) second stones 23 arranged and fixed in an intermediate portion of the base 21 in parallel with the first stones 22; and a wire mesh (perforated plate) stretched on the back surface of the base 21 )
24, and a pair of partition plates 25 and 26, which are arranged and fixed on the base 21 at positions intersecting the stones 22 and 23 at positions where the arrangement directions of the stones 22 and 23 are bisected.

The base 21 has a frame structure using an angle material, and three horizontal rails 28, 29, 30 are horizontally provided between opposing sides of an outer frame 27.
One vertical bar 31 is provided horizontally. The outer frame 27 is formed by arranging the angle members so as to face each other inwardly, and of the three horizontal beams, the outer horizontal beam 28 uses the angle material of the outer frame 27 as the angle material. In a state where the angle members are opposed to each other, the pair of central horizontal rails 29 and 30 are horizontally arranged with the angle members facing each other.

On the other hand, the first and second stone materials 22 and 23 are formed as pillars having a substantially isosceles triangle in cross section.
Among them, the first stone material 22 is a state in which the left and right side edges of the bottom surface 22a are placed on the angle material of the outer horizontal rail 28 and the outer frame 27, and the second stone material 23 is the pair of horizontal rails 29. And 30 are placed on the base 21 with the left and right side edges of the bottom surface (not shown) placed on the angle members. A plurality of holes 31 are provided on the bottom side surface of the first and second stone materials 22 and 23 as shown in FIG.
The positions of the stones 22 and 23 are fixed by receiving the distal end of the pin 33 through the outer frame 27 and the horizontal rails 28, 29 and 30 in the holes 32. In addition, at least two surfaces of the stone materials 22 and 23 except for a portion where the hole 32 is provided and a side surface are finished with a split skin (FIG. 9).

The pair of partition plates 25 and 26 have a triangular shape. Each of the pair of partition plates 25 and 26 is fastened and fixed to the vertical rail 31 with a bolt 34 while the bottom surface is placed on the vertical rail 31. As shown in FIG. 8, each partition plate 25, 26 has a vertex of each stone 22, 23 and each stone 22, 23 when viewed from the side.
S connecting the horizontal rail 29 or the upper edge of the outer frame 27 facing the
The size and shape are set so as to partially partition the lower airspace. Thus, the angle between the line S and the base 21 is set so as to coincide with the inclination angle α of the slope B of the revetment A, while the side of each of the stone materials 22 and 23 with respect to the partition plates 25 and 26 is different. Opposite slopes 22b, 23
b has an inclination angle set so as to be substantially perpendicular to the line S. Thus, when the base 21 is placed on the slope B, the line S is in a substantially horizontal state, and at the same time, the slopes 22b and 23b of the stones 22 and 23 are in a state of rising in the vertical direction (FIG. 6).

Here, as the angle material constituting the base 21, it is desirable to use a material which has been subjected to rust prevention treatment such as zinc plating or a stainless steel material.
It is desirable to use granite as 2,23. Various materials such as wood, metal material and concrete can be used for the partition plates 25 and 26. When a metal material is used, it is preferable to use a rust-proofing material or a stainless steel material. In the present second embodiment, the size of the base 21 and the stone materials 22 and 23 is arbitrary, but as an example, the base 21 has a size of 2 m in length and 2 m in width, and each of the stone materials 22 and 23 has a height. Is set to a size of about 0.5 m.

In order to use the paving stone segment 20 for the construction of the seawall A, as shown in FIG. 10, the paving stone segment 20 is connected to the paving stone plate 10 previously laid at the connecting portion between the riverbed C and the slope B. Are laid in order from the bottom to the top and connected to each other. Then, after the completion of the laying, the earth and sand (custom soil, gravel and the like) 34 is supplied onto the base 21, and the earth and sand 34 is raised to almost the same level as the upper ends of the stone materials 22 and 23. As a result, a step-like slope appears on the slope B of the revetment A, and then plant seeds are seeded on the soil 34 or seedlings are transplanted. As a result, the plant 14 thrives in the low water area, and the plant 1 grows in the same manner as in the first embodiment.
Around 4 is a habitat for fish in the underwater area.
On the terrestrial part, each is provided as a habitat for small animals, and a natural revetment appears. In this case, since the stone materials 22 and 23 of each paving stone segment 20 function as earth retaining walls, scouring of the earth and sand 34 by river water or rainwater is prevented.

In the second embodiment, since the entire surface under the base 21 has a permeation structure, the permeation becomes extremely smooth. Inter-contact is performed efficiently, and water purification proceeds. In addition, since the roots can be freely extended through the permeation part, the supply of moisture and nutrients becomes sufficient, and the plant 14
Growth is promoted. In the second embodiment, since the partition plates 25 and 26 on the base 21 regulate the flow of the earth and sand 34 in the flow direction of the river water, scouring of the earth and sand 34 is more reliably prevented. Furthermore, since the stone materials 22 and 23 made of granite are provided as step walls, the scenery is extremely good.

A partition plate 25 provided on the base 21
The number of 26 is arbitrary, and a larger number may be provided. When the paving stone segment 20 is applied to a dry area such as a middle water area or a high water area, the partition plates 25 and 26 can be omitted. In the second embodiment, the minimum unit in which the stone materials 22 and 23 are arranged in two rows on one base 21 is the minimum unit. Stone materials may be arranged in units or in more rows (three or more rows) sharing one base.

FIGS. 11 and 12 show a revetment paving stone segment according to a third embodiment of the present invention. The feature of the paving stone segment 40 is that a porous cage 41 is used in place of the wire mesh (perforated plate) 24 of the paving stone segment 20 in the second embodiment. The cage body 40 is composed of a box-shaped frame 42 integrated below the base 21 and a wire mesh 43 stretched on the bottom and side surfaces of the frame 42.

In order to use the paving stone segment 40 for the improvement of the revetment A, as shown in FIG. 13, the paving stone segment 10 is continuously connected to the paving stone plate 10 previously laid at the connecting portion between the riverbed C and the slope B. Are laid in order from the bottom to the top and connected to each other. And after this laying is completed,
Rubble stones such as boulders, crushed stones, concrete crushed pieces, etc. within 0
(FIG. 11). By putting the rubble 44 into the basket body 40, the weight of the paving stone segment 40 is significantly increased, and the slope B is in a stable state. Therefore, it is not necessary to form a rubble mound on the slope B in advance,
The construction period can be significantly reduced. In addition, since the rubble 44 is held in the basket body 40, so-called end processing of forming an end wall as in the case of forming a rubble mound becomes unnecessary. Thereafter, as in the second embodiment, soil (sand, gravel, etc.) 34 is supplied onto the base 21 and plant seeds are sown or seedlings are transplanted on the base 21. A multi-natural revetment where plants 14 thrive appears in the waters.

[0031]

As described above, according to the revetment paving stone segment according to the present invention, stone can be used as a retaining wall to fill the stairs with the stepping stone. Even if applied to the surface, scouring of the soil by river water and rainwater will be greatly suppressed, which will greatly contribute to maintaining the stability of the natural revetment. In addition, since water permeates through the soil, purification of water quality by contact between gravel proceeds, which will also positively contribute to purification of river water.

[Brief description of the drawings]

FIG. 1 is a side view showing the structure of a revetment paving stone segment as a first embodiment of the present invention.

FIG. 2 is a plan view of the paving stone segment shown in FIG. 1;

FIG. 3 is a front view of the paving stone segment shown in FIG. 1;

FIG. 4 is a perspective view showing an external shape of a stone used in the first embodiment.

FIG. 5 is a cross-sectional view showing a form of the revetment after applying the revetment paving stone segment as the first embodiment.

FIG. 6 is a side view showing a structure of a revetment paving stone segment as a second embodiment of the present invention.

FIG. 7 is a plan view of the paving stone segment shown in FIG. 6;

FIG. 8 is an enlarged side view showing a part of the paving stone segment shown in FIG. 6;

FIG. 9 is a perspective view showing an external shape of a stone used in the second embodiment.

FIG. 10 is a cross-sectional view showing a form of a revetment after applying a revetment paving stone segment as a second embodiment.

FIG. 11 is a side view showing a structure of a revetment paving stone segment as a third embodiment of the present invention.

FIG. 12 is a bottom view of a basket constituting the paving stone segment shown in FIG. 11;

FIG. 13 is a cross-sectional view showing a form of a revetment after applying a revetment paving stone segment as a third embodiment.

[Explanation of symbols]

 1, 20, 40 Paving stone segment 2, 21 Base 2a Lower surface of base 2b Upper surface of base 3, 22, 23 Stone 4, 25, 26 Partition plate 24 Wire mesh (perforated plate) 41 Basket A Seawall B Slope

Claims (6)

[Claims] 1. A base having a rectangular mounting surface with respect to a slope of a revetment, and a plurality of stones arranged and fixed on the base along at least one line along one ridge line of the mounting surface, In the state where the base is placed on the slope of the revetment so that the stone is on the lower side of the slope, at least the surface of the stone that is directed downward at the slope stands substantially vertically. A revetment paving stone segment, characterized in that: 2. The base is made of a solid block made of concrete, the upper surface of which is placed in a substantially horizontal state in a state where it is placed on a slope of a revetment. The revetment paving stone segment according to claim 1, wherein the segment is fixed substantially vertically to the upper surface of the block. 3. The frame according to claim 1, wherein the base comprises a plate-shaped frame and a perforated plate stretched on the back of the frame, and a stone formed in a prismatic shape is fixed to an upper surface of the frame. 2. The revetment paving stone segment according to 1. 4. A base comprising a plate-shaped frame and a porous cage integrated with a back surface of the frame, wherein a square pillar-shaped stone material is fixed to an upper surface of the frame. The revetment paving stone segment according to claim 1. 5. The revetment paving stone segment according to any one of claims 1 to 4, wherein at least one partition plate is fixed on the base so as to intersect with the arrangement direction of the stone materials. 6. The revetment paving stone segment according to claim 1, wherein the stone is natural stone such as granite.