JP4937945B2 - Porous concrete block unit, manufacturing method thereof and laying method thereof - Google Patents

Description

  The present invention relates to a porous concrete block unit that protects a slope such as a revetment and can be greened, a manufacturing method thereof, and a laying method thereof.

Soil protective materials are widely used to protect slopes such as revetments, dikes, or roads, and to prevent erosion. This soil protection material is formed into a mat shape, for example, by adhering and fixing a plurality of concrete blocks with a special shape such as a substantially rectangular parallelepiped on a strong and durable synthetic fiber filter sheet (filter material) (For example, see Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4). At the construction site, soil protective materials formed on such mats are laid side by side.
JP-A-61-113911 JP-A-1-105818 Patent No. 2603293 Japanese Patent Laid-Open No. 1-290821

  A soil protection material formed in a mat shape by adhering and fixing a plurality of concrete blocks on the filter material is loaded onto the loading platform of a vehicle such as a truck and carried to the construction site. After hanging up with a crane or the like, it is hung at the laying site.

  For this reason, the metal fittings and fibers that connect a plurality of blocks are required to have a high tensile strength that can withstand the load during lifting and hanging. In addition, since the mat is stacked on the loading platform of the vehicle, the size of the product is limited to the area of the loading platform.

  In order to eliminate the inconveniences of the conventional example, the present invention can reduce the tensile strength required for a member connecting a plurality of blocks, and the flat area of the product is not limited to the area of the loading platform of the vehicle. The present invention provides a porous concrete block unit that can be formed in an arbitrary size and that can improve the workability of laying, a manufacturing method thereof, and a laying method thereof.

Each porous invention of claim 1, wherein the long side of each elongated porous concrete block of a plurality of parallel by adjacent, connected to the interdigital consolidated material of the linear body, and the adjacent The gist is that a cushioning material is interposed in the upper gap of the concrete block to form a long unit that has flexibility as a whole and is bent into a U-shape as a whole .

Each porous invention of claim 2, wherein the long side of each elongated porous concrete block of a plurality of parallel by adjacent, connected to the interdigital consolidated material of the linear body, and the adjacent A cushioning material is interposed in the upper gap of the concrete block to form a long unit that is flexible as a whole and bends in a U shape. The ends of the connecting material are connected to the short side of the unit. Then , the gist is that a fixing member to be fixed is attached.

  The present invention according to claim 3 forms a long unit that can be wound by connecting a plurality of long porous concrete blocks with their long sides adjacent to each other and connecting them with a connecting material. The gist is that a long porous concrete block core located at one end of the short side of the unit is fixed.

  The gist of the invention described in claim 4 is that ordinary concrete is combined with the lower part of the porous concrete block.

  The gist of the invention described in claim 5 is that the connecting material is a resin rope having a two-layer structure in which a protective layer is formed outside the core member.

According to the sixth aspect of the present invention, as a manufacturing method, a plurality of long porous concrete blocks are arranged side by side with their long sides adjacent to each other, and a connecting material is inserted in the width direction of the plurality of porous concrete blocks. A connecting material is inserted into the hole, and a plurality of porous concrete blocks are connected in an interdigital manner with this connecting material, and a cushioning material is interposed in the upper gap of each adjacent porous concrete block to provide flexibility as a whole. Then, the gist is that a long unit that is bent in a U shape as a whole is formed, and a fixing member for connecting and fixing both ends of the connecting member is attached to the short side of the unit.

  The invention according to claim 7 is a long unit in which a plurality of long porous concrete blocks are arranged side by side with their long sides adjacent to each other, and the plurality of porous concrete blocks are connected in a comb shape with a connecting material. The core material is fixed to a porous concrete block located at one end of the short side of the unit, and the unit is wound in a roll shape with the core material as an axis.

The invention according to claim 8 is that a plurality of long porous concrete blocks are arranged side by side with their long sides adjacent to each other, and a connecting material is inserted into a connecting material insertion hole formed in the width direction of the plurality of porous concrete blocks. And connecting a plurality of porous concrete blocks in an interdigital manner with this connecting material, and interposing a cushioning material in the upper gap of each adjacent porous concrete block, and having flexibility as a whole, A long unit that bends in a U-shape is formed, and a fixing member for connecting and fixing both ends of the connecting member is attached to the short side of the unit, and the unit is lifted and laid using the fixing member. The gist is to lay down the site.

  The invention according to claim 9 forms a long unit that can be wound by connecting a plurality of long porous concrete blocks with their long sides adjacent to each other and connecting them with a connecting material. A core material is fixed to a porous concrete block located at one end on the short side of the core, and the unit wound in a roll shape with the core material as an axis is lifted via the core material and lowered to a laying place. The gist of the invention is to unfold and lay the roll-shaped unit by traction means connected to.

  According to the first aspect of the present invention, since the porous concrete block unit is formed by connecting the long porous concrete blocks in parallel, the whole is formed of a flat plate having an equal thickness section. The unit price can be reduced while ensuring product quality. In addition, the construction efficiency per construction area is improved, the entire unit becomes flexible, can be flexibly adapted to the laying surface when laying on uneven and soft ground, and can follow the ground deformation after laying.

  According to the second and sixth aspects of the present invention, in addition to the above-described function, the porous concrete block is connected in a comb shape with a connecting material that penetrates the porous concrete block in the width direction. By using the fixing members at both ends, for example, a rope such as a rope is hooked and hung on the fixing member and can be easily installed at the laying site.

  According to the third and seventh aspects of the present invention, since the long porous concrete blocks are connected in parallel, the porous concrete block unit can be wound in a roll shape. Can be transported in a state. Therefore, when loading on the loading platform of a vehicle such as a truck, the area of the unit is not limited by the loading platform area.

  Also, when lifting from the loading platform and dropping it to the site, it is not lifted from the loading platform in a flat mat shape, but is performed by lifting the core material in the state of being wound in a roll shape. There is no requirement for tensile strength.

  And in order to wind in a roll shape, a core material is fixed to a long porous concrete block located at one end on the short side of the unit, and the unit is simply wound in a roll shape with this core material as an axis. Therefore, manufacturing is also easy.

  According to the fourth aspect of the present invention, by combining ordinary concrete with the lower part of the porous concrete block to make a hybrid, it is possible to reduce the material cost and to reduce the bending of the member.

  According to the fifth aspect of the present invention, the connecting material is formed of a resin rope having a two-layer structure in which a protective layer is formed on the outer side of the core member, so that the outer protective layer prevents breakage and deterioration of the connecting material. In addition, the tensile strength can be secured by the inner core member.

  According to the present invention described in claim 8, since it can be lifted and installed using fixing members attached to both ends of the long flexible unit as a laying method, no special equipment is required for laying. Moreover, a large tensile strength is not required for the members connecting the blocks.

  According to the present invention described in claim 9, since the unit wound in a roll shape can be laid as a laying method so as to unfold the roll, similarly, no special equipment is required for laying, and In addition, a large tensile strength is not required for the members connecting the blocks. In particular, when laying on a slope, it can be constructed easily by rolling the slope along the slope.

  As described above, the porous concrete block unit of the present invention, the manufacturing method thereof, and the laying method thereof have a low tensile strength required for the members connecting the blocks when connecting the plurality of blocks to form the block unit. In addition, since the product can be made flexible as a whole, the construction efficiency is improved, it is possible to flexibly cope with unevenness and soft ground, and the followability to ground deformation after installation is good.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of a porous concrete block forming the porous concrete block unit of the present invention, FIG. 2 is a longitudinal front view of the same, FIG. 3 is a front view of the porous concrete block unit, and FIG. In the figure, the porous concrete block unit 1 of the present invention has a basic structure in which a plurality of long porous concrete blocks 2 are arranged side by side with their long sides adjacent to each other, and these are connected to each other by a connecting material 3. The long porous concrete block unit 1 which was connected and made into the aggregate | assembly and has flexibility as a whole was formed.

  The porous concrete block 2 is, for example, a rod having a length of 1 to 2 m, a width of about 150 mm, and a height of 100 mm, and the cross section may be a rectangular parallelepiped shape or a semicircular shape. It was formed into a trapezoid that maximized.

  In the example shown in the figure, the size of the trapezoidal block is as follows: the width of the lower block 2a (the lower side of the trapezoidal block 2) is 200 mm, the height is 50 mm, the width of the upper block 2b (the upper side of the trapezoidal block 2) is 100 mm, and the height is 50 mm. is there.

  The structural specifications of the compressive strength and the porosity are preferably 10 N / mm 2 or more necessary for porous concrete revetment and a porosity of 21 to 30%. More preferably, the strength is 18N / mm2 or more and the porosity is 18 to 21% (Advanced Construction Technology Center, “Chapter 2 Survey and Plan of Porous Concrete River Revetment Method”, Sankaido Co., Ltd., 2001 April 20 first edition, 20-25 pages).

  The entire porous concrete block 2 may be made of porous concrete, but the block upper portion 2b may be made of porous concrete and the block lower portion 2a may be made of ordinary concrete. In this case, it becomes a hybrid of porous concrete and ordinary concrete, so that the cost can be reduced and the risk of breakage of members can be reduced. The ratio of the porous concrete portion to the ordinary concrete portion is, for example, 50 mm in height, that is, 1: 1.

  And the penetration hole 8 penetrated in the width direction is drilled in the block lower part 2a. The insertion hole 8 is for inserting a connecting member 3 described later, and is provided at least near both ends in the length direction of the porous concrete block 2.

  The connecting material 3 is a linear body that joins at least the vicinity of both ends on the short side of the parallel porous concrete blocks 2, and is composed of, for example, a double-structure resin rope in which a protective layer is formed on the outside of the inner core member To do.

  To produce the porous concrete block unit 1, as shown in FIGS. 3 and 4, a plurality of porous concrete blocks 2 are arranged side by side with their long sides adjacent to each other, and the connecting material 3 is passed through all the insertion holes 8. A plurality of porous concrete blocks 2 are connected in a comb shape.

  Then, a frame material as a connecting member fixing member 9 is attached to each end (short side) in the length direction of the porous concrete block unit 1, and both ends of the connecting member 3 passed through the insertion hole 8 are fixed. The member 9 is coupled and fixed. In the illustrated example, the frame-shaped fixing member 9 is used. However, the shape of the fixing member 9 is not limited as long as the connecting member 3 can be fixed.

  A method of laying the porous concrete block unit 1 will be described with reference to FIGS. As shown in FIG. 5, the porous concrete block unit 1 is flattened in a state where the porous concrete block unit 1 is flatly spread on a loading platform 10 of a vehicle such as a truck and is carried to the site. In this case, the curing sheet 11 is sandwiched between the upper and lower porous concrete block units 1 and 1 so that the lower part 2a which is the wide part of the trapezoidal porous concrete block 2 is positioned on the lower side.

  In order to install the porous concrete block unit 1 at the laying site, as shown in FIG. 6, on the loading platform 10 such as a truck, a polystyrene foam or the like is provided in the gap between the porous concrete blocks 2 adjacent to the porous concrete block unit 1. The cushioning material 12 is interposed.

  In this state, as shown in FIG. 7, the ropes such as the wires 13 are respectively coupled to the fixing members 9 attached to both ends of the porous concrete block unit 1 (for example, at two locations), and the wires 13 are lifted by a crane or the like. .

  In the lifted state, as shown in FIG. 8, both ends of the porous concrete block unit 1 are lifted, so that the flexible porous concrete block unit 1 is bent in a U shape as a whole. And the buffer material 12 is located inside the porous concrete block unit 1 curved in the U-shape, and is automatically sandwiched between the adjacent porous concrete blocks 2 by lifting. This prevents the adjacent porous concrete blocks 2 from colliding with each other and being damaged.

  The suspended porous concrete block unit 1 is gently lowered and installed at the laying place as shown in FIG. At this time, the positioning with respect to the laying place is performed with the lower end portion of the porous concrete block unit 1 being bent and bent, that is, the center portion as a target. Thereby, it can install correctly in a laying place.

  When the porous concrete block unit 1 is installed, when the laying place is the slope 16, first, one end of the porous concrete block unit 1 positioned above the slope of the slope 16 is attached to a reaction force such as an anchor 14 or a reinforcing bar. Then, the other end of the porous concrete block unit 1 located below the slope of the slope 16 is similarly fixed to the installation surface with a reaction material such as an anchor 14.

  Finally, the cushioning material 12 is removed, and the installation of the porous concrete block unit 1 is completed.

  Further, as shown in FIG. 10, the surface of the porous concrete block unit 1 is formed by spraying a material containing soil, plant (seed), fertilizer, water retention material or the like and planting base 15 made of greening material such as palm mat as required. Install to. Further, a part of the porous concrete block 2 can be prefilled with a filler such as soil.

  11 to 15 show a second embodiment, FIG. 11 is a perspective view of a porous concrete block unit, FIG. 12 is a longitudinal front view of the main part of the same, and the porous concrete block unit 21 of the second embodiment also has a basic structure. The configuration in which a plurality of long porous concrete blocks 22 are arranged side by side with their long sides adjacent to each other is the same as in the first embodiment, but the second embodiment connects these porous concrete blocks 22 together. It was formed into a long porous concrete block unit 21 that can be wound into an agglomerate with a material 23 and wound as an aggregate.

  The porous concrete block 22 is, for example, a rod-shaped member having a length of about 1 to 2 m and a width of about 150 mm, and the cross section may be a rectangular parallelepiped shape. However, in the illustrated example, the porous concrete block 22 is formed in a trapezoidal shape so that the bottom area of the ground contact portion is narrow. did.

  The porous concrete of the second embodiment is the same as that of the first embodiment. The entire porous concrete block 22 may be formed of porous concrete. However, as shown in FIG. 13, the block upper portion 22b may be made of porous concrete and the block lower portion 22a may be made of ordinary concrete. In this case, it becomes a hybrid of porous concrete and ordinary concrete, so that the cost can be reduced and the risk of breakage of members can be reduced. The ratio of the porous concrete portion to the ordinary concrete portion was 50 mm in height in the illustrated example, that is, 1: 1.

  The connecting material 3 that connects the porous concrete blocks 22 is a linear body that connects at least the vicinity of both ends on the short side of the parallel porous concrete blocks 22, and has a protective layer formed on the outside of the inner core member, for example. Consists of heavy-duty resin ropes.

  The connecting member 3 is fixed to the porous concrete block 22 with an anchor 24 such as a coated reinforcing bar. In the illustrated example, the connecting material 3 extending in the long side direction of the porous concrete block unit 21 is fixed to the upper surface (block upper portion 22 b) of the porous concrete block 22. By doing so, the long porous concrete block unit 21 has flexibility as a whole, and can be wound in a roll shape with the porous concrete block upper portion 22b inside (see FIG. 14).

  Further, a hollow or non-hollow core material 25 such as a steel pipe is fixed to the porous concrete block 22 located at one end (most end portion) on the short side of the porous concrete block unit 21 along its length direction. . In this case, the length of the core member 25 is set to be equal to or longer than the length of the porous concrete block 22, that is, such that both ends of the core member 25 protrude outward from both end portions of the porous concrete block 22. In the illustrated example, the core member 25 is fixed to the upper surface (block upper portion 22b) of the porous concrete block 22, but may be fixed to the block lower portion 22a.

  Next, a method for manufacturing the porous concrete block unit 21 will be described. First, the porous concrete block 22 is manufactured. In this method, an aggregate and a cement paste are kneaded with a certain composition and then placed on a mold.

  The type of cement, admixture, coarse aggregate, etc. used for the porous concrete can be appropriately selected according to the application and use conditions. For example, as disclosed in Japanese Patent Application Laid-Open No. 2002-180131, a material using an aggregate having a particle diameter exceeding 20 mm, preferably exceeding 30 mm, in which a void serving as a living space for small animals is formed is employed. The admixture preferably contains silica fume. For example, the high-strength porous concrete admixture disclosed in JP-A-2005-206399 is used. Further, one or more kinds of fibers may be selected and mixed from metal fibers, organic fibers, and carbon fibers. In order to ensure safety as a porous concrete revetment, when the compressive strength is 18 N / mm 2 or more, the porosity of the porous concrete is 18 to 21% as described above, but may be about 15%.

  A plurality of porous concrete blocks 22 produced in this way are arranged side by side with their long sides adjacent to each other, and a connecting member 23 made of a linear body is fixed by an anchor 24.

  Further, a core material 25 made of a steel pipe or the like is fixed to the upper surface of the porous concrete block 22 located at one end (most end portion) on the short side of the porous concrete block unit 21, and as shown in FIG. The porous concrete block 22 is removed while being rolled up. The porous concrete block unit 21 thus obtained has a roll diameter of about 80 cm in the case of a 4.5 m long product.

  A method of laying the porous concrete block unit 21 wound in a roll shape as described above will be described. A roll-shaped porous concrete block unit 21 is loaded and transported to the loading platform of a vehicle such as a truck to the site, lifted by a crane or the like using both ends or hollow portions of the core 25, and above the slope of the laying place. Down. In this case, since the load at the time of lifting is applied to the core member 25, the necessary load to the connecting member 23 can be small.

  When the porous concrete block unit 21 is lowered at the laying place, as shown in FIG. 15, one end of the rope such as the wire rope 26a is joined to the portion of the core member 25 protruding on both sides of the porous concrete block unit 21. A suspension fitting 27 is coupled to the other end of each of the wire ropes 26a, 26a, one end of a rope such as another wire rope 26b is coupled to the center of the suspension fitting 27, and the other end of the wire rope 26b is connected to the winch. Connected to a traction device (not shown).

  When the laying direction of the porous concrete block unit 21 is transverse to the slope as shown in FIG. 15 (a), the roll-shaped porous concrete block unit is wound by winding the wire rope 26b with a traction device. 21 is pulled in the laying direction, whereby the porous concrete block unit 21 is laid so as to release the roll.

  Further, when the laying direction of the porous concrete block unit 21 is a vertical direction with respect to the slope as shown in FIG. 15B, if the wire rope 26b is opened by the traction device, the porous along the slope of the slope is obtained. The concrete block unit 21 rolls under its own weight, and the porous concrete block unit 21 is laid at a predetermined location.

  In this way, the porous concrete block unit 21 wound in a roll shape can be easily laid by an operation of unraveling. In addition, when the roll diameter is about 80 cm, the laying length can be set up to about 4.5 m at a time, and the workability is good. After laying, it is fixed to the installation surface with a reaction force material such as an anchor 14 or a reinforcing bar.

  Finally, the laid porous concrete block unit 21 is sprayed to form the planting base 15. A planting base 15 such as a palm mat may be placed on the surface of the porous concrete block unit 21. Also, a part of the porous concrete block 22 can be filled in advance with a filler such as soil.

It is a perspective view which shows 1st Embodiment of the porous concrete block of this invention. It is a vertical front view which shows 1st Embodiment of the porous concrete block of this invention. It is a front view which shows 1st Embodiment of the porous concrete block unit of this invention. It is a top view which shows 1st Embodiment of the porous concrete block unit of this invention. It is a front view of the conveyance state which shows 1st Embodiment of the porous concrete block unit of this invention. It is a front view of the lifting preparation state which shows 1st Embodiment of the porous concrete block unit of this invention. It is a front view of the state just before lifting which shows 1st Embodiment of the porous concrete block unit of this invention. It is a front view of the lifting state which shows 1st Embodiment of the porous concrete block unit of this invention. It is a front view of the laying state which shows 1st Embodiment of the porous concrete block unit of this invention. It is a front view of the state which constructed the vegetation which shows 1st Embodiment of the porous concrete block unit of this invention. It is a perspective view which shows 2nd Embodiment of the porous concrete block unit of this invention. It is a vertical front view of the principal part which shows 2nd Embodiment of the porous concrete block unit of this invention. It is a vertical front view of the porous concrete block which is the principal part which shows 2nd Embodiment of the porous concrete block unit of this invention. It is a front view of the state wound in roll shape which shows 2nd Embodiment of the porous concrete block unit of this invention. It is a perspective view which shows the laying state which shows 2nd Embodiment of the porous concrete block unit of this invention.

DESCRIPTION OF SYMBOLS 1,21 Porous concrete block unit 2,22 Porous concrete block 2a, 22a Block lower part 2b, 22b Block upper part 3,23 Connection material 8 Insertion hole 9 Fixing member
10 Loading platform 11 Curing sheet 12 Buffer material 13 Wire (strand)
14, 24 Anchor 15 Planting base 16 Slope 25 Core material 26a, 26b Wire rope (strand)
27 Hanging bracket

Claims (9)

A plurality of long porous concrete blocks are arranged side by side with their long sides adjacent to each other , connected linearly by a linear connecting material, and a cushioning material is placed in the upper gap of each adjacent porous concrete block A porous concrete block unit characterized in that it is formed as a long unit that is flexible and has a U-shape as a whole . A plurality of long porous concrete blocks are arranged side by side with their long sides adjacent to each other , connected linearly by a linear connecting material, and a cushioning material is placed in the upper gap of each adjacent porous concrete block A long unit that has flexibility as a whole and is bent in a U shape is formed, and a fixing member that connects and fixes both ends of the connecting member is attached to the short side of the unit. Porous concrete block unit characterized by that.   A plurality of long porous concrete blocks are arranged side by side with their long sides adjacent to each other and connected to each other with a connecting material to form a long unit that can be wound and positioned at one end on the short side of the unit. A porous concrete block unit comprising a core material fixed to a long porous concrete block.   The porous concrete block unit according to any one of claims 1 to 3, wherein ordinary concrete is combined with a lower portion of the porous concrete block.   The porous concrete block unit according to any one of claims 1 to 4, wherein the connecting member is a resin rope having a two-layer structure in which a protective layer is formed on the outer side of the core member. A plurality of long porous concrete blocks are arranged side by side with their long sides adjacent to each other, and a connecting material is inserted into a connecting material insertion hole formed in the width direction of the plurality of porous concrete blocks. A plurality of porous concrete blocks are connected in an interdigital shape, and a cushioning material is interposed in the upper gap between adjacent porous concrete blocks to provide flexibility as a whole. A method for producing a porous concrete block unit, characterized in that a unit is formed, and a fixing member for attaching and fixing both ends of the connecting material is attached to the short side of the unit.   A plurality of long porous concrete blocks are arranged side by side with their long sides adjacent to each other, and a plurality of porous concrete blocks are connected with a connecting material to form a long unit. A method for producing a porous concrete block unit, comprising: fixing a core material to a porous concrete block located at one end, and winding the unit around the core material in a roll shape. A plurality of long porous concrete blocks are arranged side by side with their long sides adjacent to each other, and a connecting material is inserted into a connecting material insertion hole formed in the width direction of the plurality of porous concrete blocks. A plurality of porous concrete blocks are connected in an interdigital shape, and a cushioning material is interposed in the upper gap between adjacent porous concrete blocks to provide flexibility as a whole. A unit is formed, a fixing member for connecting and fixing both ends of the connecting material is fixed to the short side of the unit, the unit is lifted using the fixing member, and the unit is laid down at a laying place. A method of laying a porous concrete block unit characterized by   A plurality of long porous concrete blocks are arranged side by side with their long sides adjacent to each other and connected to each other with a connecting material to form a long unit that can be wound and positioned at one end on the short side of the unit. The core material is fixed to a porous concrete block to be wound, and the unit wound in a roll shape with the core material as an axis is lifted through the core material and lowered to a laying place, and by the traction means connected to the core material, A method for laying a porous concrete block unit, comprising unfolding and laying a roll unit.

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