Slope crushed stone laying structure and slope protection structure

Abstract

To provide a slope crushed stone installation structure and a slope protection structure, allowing crushed stones to be installed on a slope in a uniform thickness even on a steep slope.SOLUTION: Provided are: a slope crushed stone installation structure 100 including a partition block row group 18 in which a plurality of partition block rows 17 formed by arranging a plurality of partition blocks 10 in a slope longitudinal direction of a slope N are arranged at predetermined intervals in a direction orthogonal to the slope longitudinal direction in the same plane as the slope N, and a civil engineering sheet 60 placed over each of upper surfaces of the partition block rows 17, wherein crushed stones 70 are filled in a portion surrounded by the slope N, the partition block row group 18 and the civil engineering sheet 60; and a slope protection structure 200 formed by placing a leg part 112 on the partition block row 17 of the slope crushed stone installation structure 100 through the civil engineering sheet 60, and filling ready-mixed concrete 120 between the slope crushed stone installation structure 100 and a slope protection block 110 arranged with a foundation 40 arranged at a slope toe position as a starting point.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] The present invention relates to a crushed stone laying structure for slopes and a slope protection structure. [Background technology]

[0002] When constructing a slope protection structure, such as a block construction method, the slope is shaped and then crushed stone is laid on the slope. Such crushed stone laying structures and slope protection structures are well known, as disclosed in Patent Document 1 (JP Patent Publication No. 7-138969) and Patent Document 2 (JP Patent No. 5449295). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-138969 [Patent Document 2] Patent No. 5449295 Summary of the Invention [Problem to be solved by the invention]

[0004] In the configurations disclosed in Patent Documents 1 and 2, the slope of the slope is gentle, so crushed stone can be laid appropriately on the slope. However, when the slope is steep, at 15% or more, the crushed stone laid on the slope cannot maintain a uniform layer thickness due to the action of gravity, which is a problem. [Means for solving the problem]

[0005] Therefore, the object of the present invention is to provide a slope crushed stone laying structure and slope protection structure that makes it possible to lay crushed stone in a uniform layer thickness on a slope, even on a steep slope.

[0006] That is, the present invention provides a group of sectional block rows, each of which is made up of a plurality of sectional blocks arranged in the slope length direction of a slope, and which are arranged at predetermined intervals in a direction perpendicular to the slope length direction within the same plane as the slope, a covering body arranged across each of the upper surfaces of the sectional block rows, and a section surrounded by the slope, the sectional block row group, and the covering body, which is filled with crushed stone. The segment blocks are fixed to the slope by segment block anchor pins, and the covering body is fixed to the slope by covering body anchor pins. This is a slope crushed stone laying structure characterized by the above.

[0007] This makes it possible to lay crushed stone in a uniform layer thickness on a slope, even on a steep slope.

[0009] Furthermore, the division block is formed in a rectangular parallelepiped shape, and at both ends of the upper surface in the vertical direction, a connector mounting recess for arranging connectors to connect adjacent division blocks and an insertion hole for the division block anchor pin are formed, and a connector mounting fastener for fixing the connector is embedded in the connector mounting recess, and it is further preferable that a mounting recess for the cover anchor pin is formed across the width at the middle part of the upper surface in the vertical direction of the division block.

[0010] This makes it possible to lay crushed stone on the slope in a more stable manner and with a uniform layer thickness, even on steep slopes.

[0011] In addition, it is preferable that the division blocks are made of porous concrete having a higher water permeability than the portion filled with the crushed stone.

[0012] This prevents a decrease in permeability even if there are division blocks other than crushed stone in the crushed stone laying area, and prevents a decrease in the functionality of the crushed stone layer.

[0013] Another invention is a slope protection structure comprising a foundation arranged at the foot of the slope, a group of partition blocks each consisting of a plurality of partition blocks arranged in the slope direction of the slope, arranged at a required interval in a direction perpendicular to the slope direction within the same plane as the slope, a covering body arranged across the upper surfaces of each of the partition block rows, and crushed stone filled in the area surrounded by the slope, the group of partition block rows and the covering body, the position at which the partition block rows are arranged is aligned with the position of the legs of slope protection blocks arranged starting from the foundation, and the legs of the slope protection blocks are placed on the upper surface of the partition block row via the covering body.

[0014] This makes it possible to construct slope protection structures with crushed stone laid in uniform layers on steep slopes.

[0015] It is also preferable that the division blocks are fixed to the slope by division block anchor pins, and the cover body is fixed to the slope by cover body anchor pins.

[0016] Furthermore, the division block is formed in a rectangular parallelepiped shape, and at both ends of the upper surface in the vertical direction, a connector mounting recess for arranging connectors to connect adjacent division blocks and an insertion hole for the division block anchor pin are formed, and a connector mounting fastener for fixing the connector is embedded in the connector mounting recess, and it is more preferable that a mounting recess for the cover anchor pin is formed across the width at the middle part of the upper surface in the vertical direction of the division block.

[0017] This makes it possible to construct slope protection structures with crushed stone laid in uniform layers on the slope in a more stable manner, even on steep slopes.

[0018] In addition, it is preferable that the division blocks are made of porous concrete having a higher water permeability than the portion filled with the crushed stone.

[0019] This means that even if the crushed stone laying area contains dividing blocks made of materials other than crushed stone, the permeability will not be reduced and the function of the crushed stone layer can be prevented from being reduced. [Effects of the Invention]

[0020] According to the configuration of the slope crushed stone laying structure and slope protection structure of the present invention, it is possible to construct a slope crushed stone laying structure and slope protection structure that allows crushed stone to be laid in a uniform layer thickness on the slope, even on a steep slope. [Brief explanation of the drawings]

[0021] [Figure 1] 1A and 1B are a plan view, an AA cross-sectional view, and a BB cross-sectional view of a division block used in this embodiment, and a front view of a cover anchor pin and a division block anchor pin. [Figure 2] 1 is a side cross-sectional view showing an example of a procedure for constructing a slope protection block in this embodiment. FIG. [Figure 3] FIG. 3 is a side cross-sectional view continuing from FIG. 2. [Figure 4] 4 is a front view in the direction of arrow IV in FIG. 3. [Figure 5] FIG. 4 is a side cross-sectional view continuing from FIG. 3. [Figure 6] FIG. 6 is a side cross-sectional view continuing from FIG. 5. [Figure 7] 6, which corresponds to FIG. 4. [Figure 8] FIG. 7 is a side cross-sectional view continuing from FIG. 6. [Figure 9] FIG. 9 is a side cross-sectional view continuing from FIG. 8. [Figure 10] 9A and 9B are views corresponding to FIG. 4. [Figure 11] FIG. 10 is a side cross-sectional view continuing from FIG. 9. [Figure 12] FIG. 12 is a side cross-sectional view continuing from FIG. [Figure 13] 12. FIG. 13 is a view equivalent to FIG. DETAILED DESCRIPTION OF THE INVENTION

[0022] The specific configurations of the crushed stone laying structure 100 for slopes and the slope protection structure 200 using the same according to the present invention will be described below with reference to the drawings.

[0023] FIG. 1 shows a plan view, an AA cross-sectional view, and a BB cross-sectional view of a sectional block arranged in the slope direction of slope N, as well as a front view of a sectional block anchor pin 20 and a covering body anchor pin 30. The sectional block 10 is a rectangular parallelepiped made of porous concrete with higher permeability than the layer of crushed stone 70 described below, and has connector mounting recesses 12 at both ends of the top surface in the slope direction (both ends in the vertical direction in FIG. 1). The connector mounting recesses 12 are embedded with female threads 13 serving as connector mounting fasteners for fastening connectors 50 to connect adjacent sectional blocks 10, and are drilled with insertion holes 14 for inserting the sectional block anchor pins 20. Two mounting recesses 16 for mounting covering body anchor pins 30 are provided in the middle of the sectional block 10 in the slope direction. The mounting recesses 16 are arranged across the width of the sectional block 10, and the inner width gradually narrows at the bottom.

[0024] As shown in Figure 1, the anchor pin 20 for the segment block is formed as a straight anchor pin. The anchor pin 30 for the cover body is formed as an inverted U-shape when viewed from the front. The inner width dimension of the anchor pin 30 for the cover body is formed to be equal to the width dimension of the segment block 10, and the height dimension is formed to be greater than the height dimension of the segment block 10. The anchor pin 30 for the cover body is attached to the mounting recess 16 in an arrangement that sandwiches the segment block 10, and the required length range of the tip is inserted into the slope N. The outer diameter dimension of the anchor pin 30 for the cover body is formed to be smaller than the depth dimension of the mounting recess 16.

[0025] Next, the crushed stone laying structure 100 for a slope in this embodiment and the slope protection structure 200 using the same will be described along with their construction procedures with reference to Figures 2 to 13. First, as shown in Figure 2, workers shape the slope N and then lay the foundations 40 for the slope protection blocks 110 at the predetermined positions on the toe side of the slope. Next, as shown in Figures 3 and 4, workers lay multiple sectional blocks 10 longitudinally along the slope length of the slope N. Adjacent sectional blocks 10 are connected by placing connectors 50 consisting of connecting plates 52 and connecting bolts 54 in the connector mounting recesses 12 and screwing the connecting bolts 54 into the female threads 13. Next, workers insert the sectional block anchor pin 20 into the insertion hole 14 of the sectional block 10 closest to the toe side of the slope and insert the required length of the tip of the sectional block anchor pin 20 into the slope N, thereby fixing the sectional block 10 closest to the toe side of the slope N as shown in Figure 5.

[0026] In this way, a plurality of sectional blocks 10 fixed along the slope length direction of the slope N form a sectional block row 17, and a sectional block row group 18 is constructed by arranging a plurality of sectional block rows 17 at required intervals in a direction perpendicular to the slope length direction within the same plane of the slope N. In this embodiment, the sectional block rows 17 are arranged in alignment with the arrangement positions of the legs 112 in the width direction (depth direction in the drawing) of the slope protection blocks 110.

[0027] Next, as shown in Figures 6 and 7, the worker lays a civil engineering sheet 60 as a covering over each of the sectional block rows 17 that make up the sectional block row group 18. As shown in Figure 6, the civil engineering sheet 60 is also laid between the sectional block 10 located closest to the foot of the slope and the upright surface of the foundation 40 on the slope N side, and is also fixed to the upright surface on the slope N side of the foundation 40 with concrete nails or the like. Next, the worker sets the covering anchor pins 30 in the mounting recesses 16 of each sectional block 10 from the top side of the civil engineering sheet 60 and inserts the required length of the tip of the covering anchor pin 30 into the slope N. Because the depth of the mounting recesses 16 is deeper than the outer dimensions of the covering anchor pins 30, the covering anchor pins 30 do not protrude from the top opening of the mounting recesses 16. In this way, the area surrounded by the slope N, the sectional block row group 18, and the civil engineering sheet 60 is formed as a crushed stone filling space.

[0028] Next, as shown in Figure 8, workers pour crushed stone 70 as backfill material into the opening on the toe side of the crushed stone filling space. The crushed stone filling space has open surfaces at both ends in the slope direction, but because the foundation 40 is located on the extension of the opening on the toe side of the slope, the poured crushed stone 70 is blocked by the foundation 40, allowing the crushed stone 70 to be filled. In addition, the crushed stone filling space is connected to the space surrounded by the original ground, foundation 40, and civil engineering sheet 60, so the crushed stone 70 is also filled in this area. Because the upper surface of the open space parallel to the slope N is covered by the civil engineering sheet 60, the height position of the upper surface of the crushed stone 70 is restricted by the civil engineering sheet 60, and a slope crushed stone laying structure 100 can be constructed in which crushed stone 70 is laid at a uniform thickness on the slope N.

[0029] Next, as shown in Figures 9 and 10, workers lay the slope protection blocks 110 on the slope crushed stone laying structure 100, starting from the foundation 40. As mentioned above, the widthwise positions of the legs 112 of the slope protection blocks 110 are aligned with the positions of the sectional block rows 17, so the slope protection blocks 110 are laid on the sectional block rows 17 via the civil engineering sheet 60. This allows the slope protection blocks 110 to be laid on the slope crushed stone laying structure 100 in an extremely stable state. Next, as shown in Figure 11, workers fill the gap between the slope crushed stone laying structure 100 and the slope protection blocks 110 with ready-mixed concrete 120, thereby fixing the slope protection blocks 110 to the slope crushed stone laying structure 100.

[0030] Next, as shown in Figures 12 and 13, the worker can construct a slope protection structure 200 in which slope protection blocks 110 are laid over the entire slope N by repeatedly laying slope protection blocks 110 and filling ready-mixed concrete 120 along the slope length direction of the slope N.

[0031] According to the slope crushed stone laying structure 100 of this embodiment and the slope protection structure 200 using the same, crushed stone 70 can be laid with a uniform thickness even on a steep slope N. This makes it easy to arrange the slope protection blocks 110 on top of the crushed stone 70 and to build a foundation concrete (not shown), which is advantageous in that it allows the construction of a structure in accordance with the design contents.

[0032] Furthermore, in this embodiment, a configuration is described in which only the segment blocks 10 at the position closest to the foot of the slope are fixed to the slope N by the segment block anchor pins 20, but this configuration is not limited to this. Depending on the conditions of the slope N, such as the gradient, and the weight of the slope protection block 110 to be placed, it is also possible to fix the segment blocks 10 in the required range on the foot of the slope or all of the segment blocks 10 to the slope N by the segment block anchor pins 20.

[0033] Furthermore, in this embodiment, the crushed stone 70 of the slope crushed stone laying structure 100 is described as being used as backfill material for the slope protection block 110, but the crushed stone 70 is not limited to being a backfill material, and it is also envisioned that the crushed stone 70 may be used as a part of the foundation or in other ways than as a backfill material.

[0034] Furthermore, in this embodiment, an example is shown in which the positions of the legs 112 of the slope protection block 110 are aligned with the positions of the partition block row 17, but the present invention is not limited to this. The positions of all the legs 112 of the slope protection block 110 do not need to correspond to the partition block row 17, and it is sufficient that at least two legs 112 of one slope protection block 110 are placed on the partition block row 17 via the civil engineering sheet 60.

[0035] Furthermore, the configuration of the present embodiment described above may be appropriately combined with modified examples described in the specification or other known configurations. [Explanation of symbols]

[0036] 10: Section block 12: Recess for attaching connector, 13: Female thread portion, 14: Insertion hole, 16: Recess for attachment, 17: Partition block sequence, 18: Partition block sequence group 20: Anchor pin for division block 30: Anchor pin for covering 40: Basics 50: Connector 52: Connecting plate, 54: Connecting bolt 60: Civil engineering sheet (covering body) 70: Crushed stone 100: Slope crushed stone laying structure 110: Slope protection block 112: Legs 120: Ready-mix concrete 200: Slope protection structure N: Slope

Claims

1. A group of divided block rows, in which a plurality of divided blocks are arranged in the normal length direction of a slope surface, are arranged in a plurality at a required interval in a direction orthogonal to the slope surface in the same plane as the slope surface with respect to the normal length direction, A covering body arranged across the upper surfaces of the divided block rows, The portion surrounded by the slope surface, the group of divided block rows, and the covering body is filled with crushed stones, The divided blocks are fixed to the slope surface by anchor pins for divided blocks, A slope surface crushed stone laying structure, characterized in that the covering body is fixed to the slope surface by anchor pins for the covering body.

2. The divided blocks are formed in a rectangular parallelepiped shape, and at both ends of the upper surface in the normal length direction, a recess for attaching a connector for connecting adjacent divided blocks and an insertion hole for the anchor pin for divided blocks are formed, In the recess for attaching the connector, a fastener for attaching the connector is embedded for fixing the connector, The slope surface crushed stone laying structure according to claim 1, characterized in that a recess for attaching the anchor pin for the covering body is formed across the width direction in the middle portion of the upper surface of the divided block in the normal length direction.

3. The slope surface crushed stone laying structure according to claim 1 or claim 2, characterized in that the divided blocks are made of porous concrete having a higher water permeability than the water permeability in the portion filled with the crushed stones.

4. A foundation arranged on the toe side of the slope surface, A group of divided block rows, in which a plurality of divided blocks are arranged in the normal length direction of the slope surface, are arranged in a plurality at a required interval in a direction orthogonal to the slope surface in the same plane as the slope surface with respect to the normal length direction, A covering body arranged across the upper surfaces of the divided block rows, The portion surrounded by the slope surface, the group of divided block rows, and the covering body is filled with crushed stones, A slope surface protection structure, characterized in that the position where the divided block rows are arranged is aligned with the position of the legs of the slope surface protection blocks arranged starting from the foundation, and the legs of the slope surface protection blocks are placed on the upper surfaces of the divided block rows via the covering body.

5. The divided blocks are fixed to the slope surface by anchor pins for divided blocks, The slope protection structure according to claim 4, wherein the covering is fixed to the slope by an anchor pin for the covering.

6. The divided block is formed in a rectangular parallelepiped shape, and at both ends in the normal length direction of the upper surface, a recess for attaching a connector for connecting adjacent divided blocks and an insertion hole for an anchor pin for the divided block are formed. A fastener for attaching the connector for fixing the connector is embedded in the recess for attaching the connector. The slope protection structure according to claim 5, wherein a recess for attaching the anchor pin for the covering is formed over the width direction in the middle portion in the normal length direction of the upper surface of the divided block.

7. The slope protection structure according to any one of claims 4 to 6, wherein the divided block is made of porous concrete having a higher water permeability than the water permeability in the portion filled with the crushed stone.

Images