JP4407916B2 - Road shoulder block manufacturing method - Google Patents

Description

The present invention relates to a method for manufacturing a road shoulder block that stabilizes a road shoulder and prevents weeds from growing by covering a slope that continues diagonally downward from the road shoulder with a weedproof sheet.

  Since roads created in rural areas are embanked, slopes exist diagonally below the shoulders on both sides of the road. In order to ensure safe driving on such roads, a concrete road shoulder block is provided along the shoulder to stabilize the road shoulder so that it does not collapse, protect the slope, and It is necessary to prevent vegetation from growing.

  As a method of emphasizing slope protection, the block construction method is known. A foundation block is embedded under the slope, and the slope block is formed on the slope side of the foundation block at a predetermined angle below the slope block. A concrete structure is constructed along the slope by making the slope block follow the slope of the slope by bringing the end face into contact with each other, and then building the concrete block along the slope. Has a concrete road shoulder block.

  In addition, as a construction method that mainly prevents the growth of vegetation on the slope, it is known that a weedproof sheet is stretched along the slope. It was necessary to arrange a concrete block part.

As a technology related to this, for example, Japanese Patent Application Laid-Open No. 2004-33032 proposes an invention relating to “weedproof sheet portion and its construction method”. According to the present invention, “an adhesive layer is provided along one side edge portion of one side of a flexible strip-shaped sheet body, and a plurality of fixing holes are provided at predetermined positions of the sheet body to prevent grass. The sheet part is molded, and the grass prevention sheet part is laid on the construction surface so that the adhesive layer is positioned on the upper surface, and the fixing member is driven into a plurality of fixing holes to fix the grass prevention sheet part. In addition, one side edge portion of the rear weedproof sheet portion is polymerized on the upper surface of the adhesive layer of the previous weedproof sheet portion and bonded together, and each fixing hole provided in the later weedproof sheet portion including the polymerized portion The side edges of the adjacent weedproof sheet parts are sealed tightly without rolling up, and even on construction surfaces such as agricultural land with many irregularities. It can be laid without hindrance.
JP 2004-33032 A

  By the way, for the maintenance of the conventional road shoulder and slope, there is a work of arranging a concrete block part for stabilizing the road shoulder part, and a work of stretching a weedproof sheet part for preventing vegetation from growing on the slope. Need to be performed separately, and the work is complicated.

  In addition, when laying concrete slope blocks made of concrete on the slope, it is necessary to level the slope as the foundation of the block construction, and heavy equipment such as a crane is required to lift the slope block. .

  Furthermore, in patent document 1, the grassproof sheet part wound by roll shape is adhere | attached and fixed toward the upper part from the slope lower part, and a scaffold and heavy machinery are required for the construction.

The present invention has been made in view of such circumstances, and the purpose of the present invention is to reduce the number of work steps and work man-hours in slope construction, and to perform construction manually without requiring large heavy machinery. An object of the present invention is to provide a method for manufacturing a road shoulder block .

The present invention has been proposed in order to achieve the above-mentioned object, and according to the first aspect of the present invention, the slope portion of the concrete block portion is formed on the shoulder-corresponding portion of the mold having an open upper surface. Forming a mold slope portion of the grass, and introducing one end portion of the weedproof sheet portion from the upper surface open side of the mold frame and extending from the mold slope portion toward the inside of the mold frame,
Pour concrete into the formwork with the parts other than one end of the weedproof sheet part outside the formwork,
Then, the concrete block portion is molded by curing the concrete, and one end portion of the weedproof sheet portion is buried in a state of being put inside from the gradient portion of the concrete block portion and fixed integrally. It is a manufacturing method of a road shoulder block.

The one according to claim 2 forms a formwork slope part for molding the slope part of the concrete block part on the shoulder equivalent part of the formwork whose upper surface is open,
  Introducing one end of the weedproof sheet part from the open side of the upper surface of the mold, along the inner surface of the gradient part of the mold,
  Pour concrete into the formwork with the parts other than one end of the weedproof sheet part outside the formwork,
Thereafter, the concrete block portion is formed by curing the concrete, and one end portion of the weedproof sheet portion is buried in the concrete block portion and fixed integrally.

According to the third aspect, the concrete is poured into the mold in a state where one end portion of the grass prevention sheet portion is connected to the stopper or the reinforcing bar, and at least a part of the stopper or the reinforcing bar is embedded in the concrete.
  The concrete block portion is then molded by curing the concrete, and one end portion of the weedproof sheet portion is integrally fixed to one side of the concrete block portion with a stopper or a reinforcing bar. The road shoulder block manufacturing method according to claim 1 or claim 2.

According to the present invention, the following excellent effects are exhibited.
That is, according to the present invention, the formwork slope part for forming the slope part of the concrete block part is formed in the shoulder corresponding part of the formwork with the open upper surface, and one end part of the weedproof sheet part is formed on the formwork. It is introduced from the upper surface open side of the mold and extends from the mold slope portion toward the inside of the mold frame, or one end portion of the weedproof sheet portion is introduced from the upper face open side of the mold frame and the mold slope portion. The concrete block part is molded by pouring concrete into the mold with the part other than one end of the weedproof sheet part outside the mold, and then curing the concrete. Since one end of the weedproof sheet is embedded in the concrete block and fixed integrally, the one end of the weedproof sheet is firmly attached to the concrete block at the slope of the road shoulder block when molding the block. Fix It can also be fixed to weed seat in an easy state along the law face.

According to the invention described in claim 3 , concrete is poured into the mold in a state where one end portion of the grass prevention sheet portion is connected to the stopper or the reinforcing bar, and at least a part of the stopper or the reinforcing bar is placed in the concrete. Since it embeds, a weedproof sheet can be fixed still more firmly.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
In FIG. 1, (a) is a perspective view showing a road shoulder block of the present embodiment, and (b) is a plan view of the road shoulder block. 2 is a perspective view showing a concrete block portion in the present embodiment, FIG. 3 is a perspective view showing a state in which road shoulder blocks of the present embodiment are arranged adjacent to each other, and FIG. 4 lays a road shoulder block of the present embodiment. It is a schematic sectional drawing which shows the road shoulder part and slope which were made.

  The main body of the road shoulder block 1 of the present embodiment is a plate-like concrete block portion 2 having a substantially rectangular parallelepiped shape, and a plurality of main bodies are arranged along the road shoulder portion 12 of the road 11. On the slope portion side of the concrete block portion 2, an upper end portion of a weedproof sheet portion 21 covering the slope portion 13 existing obliquely downward from the road shoulder portion 12 is fixed integrally.

  The concrete block portion 2 is a block that is formed by pouring concrete into a forming die. As shown in FIG. 2, the slope portion 13 is provided at the end portion that becomes the slope portion side when laid on the road shoulder portion 12. A gradient portion 3 of 10% or less is formed along the gradient. Further, in order to prevent a plurality of gaps when being arranged along the shoulder portion 12 of the road 11, it is preferable to form stepped overlapping joint portions 4 at both end portions thereof (see FIG. 9B). . In addition, you may form the semi-oval-shaped notch part 5 for penetrating the support pillar 15 of the guard rail 14 in the one side part of the concrete block part 2, for example. Furthermore, you may form the insertion hole 6 which drives the anchor 16 into the both corners of the road side edge part of the concrete block part 2. FIG.

For the weedproof sheet portion 21, it is desirable to employ a woven fabric having light shielding properties, corrosion resistance, and heat resistance, such as a woven fabric made of polypropylene, for example. The reason why the woven fabric is used is that when the weedproof sheet portion 21 is stretched along the slope portion 13, the rainwater falling on the weedproof sheet portion 21 can be efficiently infiltrated into the slope portion 13. is there. Further, the weedproof sheet portion 21 is fixed so that the upper end portion 22 of the weedproof sheet portion 21 is in close contact with the slope portion of the upper surface of the concrete block portion 2 when the concrete block portion 2 is formed by a manufacturing method described later. Furthermore, the upper end portion 22 of the weedproof sheet portion 21 is firmly fixed by fixing anchors 23 at appropriate intervals (see FIGS . 6 and 8 ). When the upper end portion 22 of the weedproof sheet portion 21 is fixed to the slope portion side of the upper surface of the concrete block portion 2, the slope portion 3 corresponding to the slope is formed, so that the upper end side of the weedproof sheet portion 21 is the concrete block. It naturally follows the gradient part 3 of the part 2. In addition, the herbicidal sheet portion 21 has a thickness of 0.5 to 1.0 mm, and can be appropriately selected according to the surrounding environment and usage, and includes seeds such as turf and fertilizer. Can also be selected.

  Moreover, as shown in FIG.1 and FIG.3, the widening part 24 which protruded from the concrete block part 2 to the width direction outward about 100 mm is formed in the at least one end part of the width direction of the weed prevention sheet part 21, for example. ing. The widened portion 24 is a portion used as an overlap margin with the adjacent weedproof sheet portion 21, and can prevent a gap from being formed between the adjacent weedproof sheet portions 21, 21. Durability can be improved by increasing the strength with respect to the fastener 25 fixed to the surface. In the present embodiment, the widened portion 24 is formed at one end portion in the width direction of the weedproof sheet portion 21, but is not limited thereto, and the widened portion is formed at both end portions in the width direction of the weedproof sheet portion 21. 24 may be formed.

Next, the manufacturing method of the road shoulder block 1 of this embodiment is demonstrated.
FIG. 6 is a schematic sectional side view showing a method for manufacturing a road shoulder block according to this embodiment, and FIG. 7 is a schematic perspective view showing a weedproof sheet portion used in the method for manufacturing a road shoulder block according to this embodiment.

  The mold 31 used for molding the concrete block portion 2 has a hollow rectangular parallelepiped shape (box shape) with an open upper surface, and a gradient (10% or less) at the shoulder equivalent portion (one side surface on the right side in FIG. 6). The formwork gradient portion 32 is formed. This formwork gradient part 32 is a part for molding the gradient part 3 of the concrete block part 2 described above, and is formed as an inclined surface so that the in-frame method dimensions are gradually enlarged upward. Moreover, as shown in FIG. 7, the anchor 23 is attached to one end part which becomes the upper end part 22 of the weed prevention sheet part 21 as a fastener with respect to the concrete block part 2 of the weed prevention sheet part 21 at appropriate intervals, such as 200 mm intervals, for example. Keep it.

First, as shown in FIG. 6 (a), an end portion that becomes the upper end portion 22 of the weedproof sheet portion 21 is introduced into a shoulder-corresponding portion of the mold frame 31, and an anchor is attached to the bottom surface near the shoulder portion of the mold frame 31. 23 is temporarily fixed (weedproof sheet setting step). At that time, instead of the anchor 23, an adhesive having a good affinity with the concrete 33 may be applied to the end portion which becomes the upper end portion 22 of the grass prevention sheet portion 21, and the anchor 23 and the adhesive are shared. Also good. In this state, one end which becomes the upper end portion 22 of the weedproof sheet portion 21 is seated on the bottom surface near the shoulder portion of the mold frame 31 by the anchor 23, and the upper end portion of the weedproof sheet portion 21 is the mold frame of the mold frame 31. A portion extending along the gradient portion 32 and exceeding the mold frame gradient portion 32 is placed outside the mold frame 31. In addition, the anchor 23 may be attached after introducing one end portion which becomes the upper end portion 22 of the weedproof sheet portion 21 into the mold 31.

  Next, as shown in FIG. 6 (b), the concrete 33 is poured into the mold 31 with the end portion of the weedproof sheet portion 21 introduced (concrete pouring step), and is cured as it is for a predetermined time ( Curing process).

  Then, when the concrete block portion 2 is taken out from the mold 31 (demolding step), as shown in FIG. 6C, the upper end portion of the weedproof sheet portion 21 is integrally formed on the slope portion side of the concrete block portion 2. A fixed road shoulder block 1 can be manufactured. Note that the concrete 33 may be cured after being demolded in a state where the concrete 33 has been cured to some extent.

According to the manufacturing method of the road shoulder block 1 of the present embodiment, the end portion which becomes the upper end portion 22 of the weedproof sheet portion 21 is introduced into a portion corresponding to the shoulder portion of the concrete block portion 2, and the weedproof sheet is formed at the time of block molding. Since the upper end portion 22 of the portion 21 is integrally fixed, the weedproof sheet portion 21 can be firmly fixed to the concrete block portion 2. Furthermore, since the upper end portion 22 of the weedproof sheet portion 21 is fixed to the anchor 23 embedded in the concrete block portion 2, the fixing is further ensured.
Moreover, in this embodiment, the upper end part 22 of the weed prevention sheet part 21 is being integrally fixed to the upper end part of the slope part side of the concrete block part 2 over the whole surface of the width direction, and the weed prevention sheet part 21 Since the vicinity of the upper end of the concrete block part 2 is also in close contact with the gradient part 3 of the concrete block part 2, the appearance of the upper end part 22 of the weedproof sheet part 21 is better than when spot fixing with a pin or the like, It is possible to prevent wind from blowing from the upper end portion 22 of the weedproof sheet portion 21.

  In the manufacturing method described above, the anchor 23 is embedded in the concrete block 2 as a stopper. However, the upper end 22 of the weedproof sheet portion 21 is connected to a reinforcing bar embedded in the concrete block portion 2 as a reinforcing bar. May be.

Next, the maintenance method and structure of the shoulder portion and the slope portion using the shoulder block 1 manufactured as described above will be described together with the action of the shoulder block 1.
As shown in FIG. 4, a plurality of concrete block portions 2 to which the above-mentioned grass prevention sheet portion 21 is integrally fixed are disposed along the road shoulder portion 12 at the upper part of the slope. At this time, as shown in FIG. 9 (b), since the step-like overlapping joint portions 4 are formed at both end portions of the concrete block portion 2, the adjacent concrete block portions 2 are connected to the overlapping joint portions 4. , 2 are overlapped with each other. Adopting such a lap joint portion 4 can prevent weeds from growing in the gap, and as shown in FIG. 9A, the side end portion of the concrete block portion 2 is simply abutted. This is because it is difficult to adjust the height of the concrete block portion 2, and as shown in FIG. 9B, in the case of the lap joint portion 4, it is easy to determine the positions of the blocks 2 and 2. Further, when the shoulder block 1 of the present embodiment is disposed on the shoulder portion 12 of the curved road 11, as shown in FIG. 10 (a), the side end portions of the concrete block portions 2 and 2 are merely pushed. In the structure to be combined, a gap 41 penetrating the ground is formed, and the strength of the mortar part 42 is weakened even if mortar is filled in the gap 41, whereas the concrete block part 2, as shown in FIG. If a structure in which two members are connected by a lap joint portion 4 is adopted, even if a gap 45 is generated, the lower lap joint portion 4 exists in the gap 45 so that it does not penetrate the ground and is packed with mortar. The strength of the mortar part 46 can be maintained, and weeds hardly grow from below. Further, it is desirable that the installed road shoulder block 1 is driven by anchors 16 into the insertion holes 6 to firmly fix the concrete block portion 2 to the road shoulder portion 12.

  After laying the concrete block portion 2, the weed-proof sheet portion 21 rolled up from the concrete block portion 2 is developed to cover the slope portion 13. Thus, when the weedproof sheet portion 21 is developed from the concrete block portion 2 and the slope portion 13 is covered, the installation work of the concrete block portion 2 and the tension work of the weedproof sheet portion 21 can be performed as a series of work. In addition, unlike the slope block construction method, no heavy machinery is required for slope construction, and work can be performed only by human power.

  In FIG. 4, the slope portion 13 covered with the weedproof sheet portion 21 is leveled, but as shown in FIG. 5, the slope portion 13 covers the slope portion 13 even when the slope portion 13 is uneven. Since it is the grass-proof sheet part 21 which has flexibility, it can cover in the state which followed the unevenness | corrugation of the slope part 13 easily. In addition, in FIG. 5, the position which drives the anchor 16 in the concrete block part 2 differs.

  Moreover, in this embodiment, the slope part 3 of 10% or less is formed in the slope part side edge part of the concrete block part 2 so that the slope of the slope part 13 may be followed. As shown in FIG. 11 (a), if the slope portion 3 is not formed at the end portion on the slope portion side of the shoulder block 1, a gap 51 is formed between the weedproof sheet portion 21 and the base slope portion 13. This is because the wind blows and the weedproof sheet 21 is peeled off. In this case, as shown in FIG. 11 (b), it is conceivable to fix the grass prevention sheet portion 21 to the lower portion of the end portion on the slope portion side of the concrete block portion 2 to eliminate the gap 51. If comprised in this way, since the said space | gap 51 does not exist, it can prevent that the grass prevention sheet | seat part 21 peels off with a wind etc., but the slope part side edge part of the concrete block part 2 becomes the step part 52. Rainwater flowing from the road surface cannot be smoothly guided onto the grass prevention sheet 21 on the slope portion 13. Therefore, as shown in FIG. 11 (c), if the slope portion 3 is formed at the end of the concrete block portion 2 on the slope portion side, a gap 51 is formed between the weedproof sheet portion 21 and the base slope portion 13. In addition, the stepped portion 52 does not exist, and the weedproof sheet portion 21 can naturally follow the slope portion 13, and rainwater flowing from the road surface can be smoothly guided to the slope portion 13.

  In this case, as shown in FIG. 8 (a), the stress concentration on the upper end portion of the gradient portion 3 is formed by forming the upper end of the gradient portion 3 formed at the end portion on the slope surface side of the concrete block portion 2 as a curved surface 53. If the force is dispersed and acts on the weedproof sheet portion 21, it is possible to prevent the weedproof sheet 21 from being torn and to improve the durability. Moreover, as shown in FIG.8 (b), the upper end of the weed prevention sheet part 21 in the state which put the one end part of the weed prevention sheet part 21 in the inside of the concrete block part 2 from the surface by the side of the slope part of the concrete block part 2 You may fix the part 22 to the concrete block part 2 over the full width. If comprised in this way, since it can fix over the full width in the state clamped with the concrete from the front and back of the weeding sheet part 21, the fixing strength of the weedproof sheet part 21 with respect to the concrete block part 2 is used. If the stopper 23 is used, it can be further increased.

  Furthermore, as described above, the weedproof sheet portion 21 is developed from the concrete block portion 2 to cover the slope portion 13, and a widened portion 24 is formed at one end portion in the width direction of the weedproof sheet portion 21. Therefore, the widened portion 24 is overlapped by using it as an overlap margin with the adjacent grass protection sheet portion 21, and the widened portion 24 is fixed to the slope portion 13 with a U-shaped fastener 25 (FIGS. 3 and FIG. 3). 4). Therefore, it can prevent that a clearance gap arises between the weed prevention sheet parts 21 and 21 which adjoin each other. In order to prevent the wind from blowing into the weedproof sheet portion 21 and swelling, it is desirable to drive the metal fittings 25 at appropriate intervals vertically and horizontally.

  In order to stabilize the road shoulder portion 12, the concrete block portion 2 needs to have strength and give a certain amount of weight. In this embodiment, since the concrete block part 2 and the grass prevention sheet part 21 which have intensity | strength are integrated, the restraint force by the weight of the grass prevention sheet part 21 is added to the concrete block part 2, Therefore A certain amount of weight can be imparted and stabilized.

(A) is a perspective view which shows the road shoulder block of this embodiment, (b) is a top view. It is a perspective view which shows the concrete block part in this embodiment. It is a perspective view which shows the state which made the road shoulder blocks of this embodiment adjoin. It is a schematic sectional side view which shows the construction state which leveled the slope of the road shoulder block of this embodiment. It is a schematic sectional side view which shows the construction state which does not level the slope of the road shoulder block of this embodiment. It is a schematic sectional side view which shows the manufacturing method of the road shoulder block of this embodiment. It is a schematic perspective view which shows the weed prevention sheet | seat part used for the manufacturing method of the road shoulder block of this embodiment. (A) is schematic sectional drawing which shows the state which made the upper end of the gradient part of the road shoulder block of this embodiment the curved surface, (b) is the state put into the inside of the concrete block part from the surface of the slope part side of a concrete block part. It is a schematic sectional drawing of other embodiment which fixed the upper end part of the weed prevention sheet | seat part. (A) is the schematic which shows the structure which faced the concrete block part, (b) is the schematic which shows the connection structure of the lap joint part of a concrete block part. (A) is the schematic which shows the butt | matching structure in the bending part of a concrete block part, (b) is the schematic which shows the connection structure in the bending part of the lap joint part of a concrete block part. (A) Schematic side sectional view showing a state in which a gap is generated between the waterproof sheet and the base slope, (b) is the upper end of the waterproof sheet fixed to the lower part of the end of the concrete block side It is a schematic sectional side view which shows a state, (c) It is a schematic sectional side view which shows the state which formed the gradient part in the slope part side edge part of the concrete block part in this embodiment, and fixed the upper end part of the waterproof sheet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Road shoulder block 2 Concrete block part 3 Gradient part 4 Overlap joint part 5 Notch part 6 Insertion hole 11 Road 12 Road shoulder part 13 Slope part 14 Guard rail 15 Support pillar 16 Anchor 21 Weeding sheet part 22 Upper end part of a weed protection sheet part ( One end)
23 Anchor 24 Widening part 25 Fastening bracket 31 Mold frame 32 Mold gradient part 33 Concrete 41 Gap 42 Mortar part 45 Gap 46 Mortar part 51 Gap 52 Step part 53 Curved surface

Claims (3)

Form the formwork slope part for molding the slope part of the concrete block part on the shoulder equivalent part of the formwork with the upper surface open, and introduce one end of the weedproof sheet part from the upper surface open side of the formwork Extending from the formwork gradient part toward the inside of the formwork,
  Pour concrete into the formwork with the parts other than one end of the weedproof sheet part outside the formwork,
  Then, the concrete block portion is molded by curing the concrete, and one end portion of the weedproof sheet portion is buried in a state of being put inside from the gradient portion of the concrete block portion and fixed integrally. Road shoulder block manufacturing method. Form the formwork slope part for molding the slope part of the concrete block part on the shoulder equivalent part of the formwork with the upper surface open, and introduce one end of the weedproof sheet part from the upper surface open side of the formwork Along the inner surface of the formwork gradient part,
  Pour concrete into the formwork with the parts other than one end of the weedproof sheet part outside the formwork,
  Then, the concrete block is molded by curing the concrete block, and one end of the weedproof sheet is buried in the concrete block and fixed integrally. The concrete is poured into the mold with one end of the weedproof sheet connected to the stopper or reinforcing bar, and at least a part of the stopper or the reinforcing bar is embedded in the concrete.
  The concrete block portion is then molded by curing the concrete, and one end portion of the weedproof sheet portion is integrally fixed to one side of the concrete block portion with a stopper or a reinforcing bar. The manufacturing method of the road shoulder block of Claim 1 or Claim 2.

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