JP4998872B2 - Permeable type retaining fence and its installation method - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a ditch that becomes a drainage channel, and more particularly to a permeable retaining fence that is excellent in drainage capacity in case of heavy rainfall and prevention of sediment discharge due to rainfall, and its installation method.

Grooves are installed as drainage channels for flood control to cope with water use and heavy rain in civil engineering and agriculture. In a conventional trench, a retaining member with a welded wire mesh extended to a frame formed of a square steel pipe is installed between H-shaped steel pillars erected along the retaining wall. Corrugated steel fences made by sandwiching non-woven mats between them, or corrugated steel fences made by corrugated steel sheets and fixed with bolts between pillars standing along the walls. ing.
1975 "Development of steel canal" supervised by Hokkaido Development Bureau

The conventional wire mesh fences mentioned above are heavy and may require a crane, so the workability is poor and the mat is easily deteriorated by ultraviolet rays because the sun rays directly hit the wire mesh. There is a disadvantage that the water permeability function is impaired by the generation of plants such as. Moreover, since the corrugated steel fence has no holes for drainage, there is a drawback that the back water stays between the walls and receives water pressure, or the earth and sand collapses.

  The present invention has been made in view of the above-mentioned drawbacks of the prior art, and since it is lightweight, it is excellent in workability and drainage, so it receives water pressure and drains water in the back soil. The purpose of the present invention is to provide a water-permeable type retaining fence and its installation method that can reduce frost heaving during the winter period by introducing water into the interior and prevent the occurrence of sediment collapse and runoff.

The means of the present invention configured to solve the above-described problems includes a plurality of support columns standing upright apart along the wall and a steel plate, and an upward inclined surface, a front vertical surface, and a downward inclination. By forming the surface and the rear longitudinal surface continuously, the concave portion and the convex portion are composed of a plate body that is continuous in the vertical direction, and a corrugated earth retaining body constructed between the columns, and a plurality of the corrugated earth retaining body formed on the corrugated earth retaining body And a filter accommodated in the recess facing the wall.

  And it is good for the said drain hole to be formed in the said corrugated earth retaining body in the substantially downward state.

Moreover, the said filter is good to be formed in the rough shape which has innumerable space | gap by entwining a wire.

Furthermore, it is good that the water-permeable sheet is spread on the rear surface of the corrugated earth retaining body in a state of covering the filter in a substantially flat shape.

Further, the means constituting the present invention according to claim 5 is to stand upright with the columns spaced apart along the longitudinal direction of the excavated dredging wall, and bend the steel plate upwardly inclined surface, front longitudinal surface, downward By continuously forming the inclined surface and the rear longitudinal surface, a corrugated earth retaining body in which a concave portion and a convex portion are continuously formed in the vertical direction and has a number of drain holes is constructed between the columns, A filter is built in the concave portion so as to face the wall, and the space between the corrugated earth retaining body and the anchor wall is backfilled with earth and sand.

  And after accommodating a filter in the said recessed part, it is good to spread a water-permeable sheet on the rear surface of the said corrugated earth retaining body.

Since the present invention is configured as described above, the following effects can be obtained.
(1) A situation where water pressure is applied to the corrugated retainer because a plurality of drainage holes are formed in the corrugated retainer arranged along the dredging wall, and the back water is discharged into the trench at an early stage. In addition, it is possible to prevent a situation in which water is trapped between the dredging wall and the corrugated earth retaining body and the earth and sand on the dredging wall collapses, and a situation in which the earth in the back surface freezes and the earth and sand collapses in the winter period.
(2) Since the filter is accommodated in the concave portion facing the dredging wall, the back water can be prevented from flowing out of the dredging wall sediment while flowing out into the ditch.
(3) Since the drainage hole is formed in the corrugated earth retaining body in a substantially downward state, the back surface water can be quickly discharged into the groove without retaining it.
(4) Since the filter is a coarse filter having a large number of voids, the drainage surface water can flow out smoothly and can be used for a long period of time because there is little clogging due to earth and sand.
(5) Since the rear surface of the corrugated earth retaining member is substantially flat by spreading a water permeable sheet with the filter covered, when the back wall is filled back, landslides or runoff It is possible to prevent as much as possible the formation of voids that cause the above.
(6) Since the filter is not in direct contact with the back soil by the water-permeable sheet, plants such as moss are difficult to grow, and the water-permeable function can be maintained for a long time.
(7) Since the water-permeable sheet is shielded from sunlight by the corrugated earth retaining body, the water-permeable function is not deteriorated because there is no deterioration due to ultraviolet rays and plants such as moss are difficult to grow.
(8) The permeable retaining fence can be installed in a few steps: standing up a pole, laying a corrugated earth retaining body, housing a filter, backfilling, and the corrugated earth retaining body is lightweight, so it can be used for a short period of time. Can be constructed with.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 4 show a first embodiment. In the figure, reference numerals 1 and 1 denote support frames made of H-shaped steel, each support frame 1 having a pair of support pillars 1A and 1A and a connecting material made of H-shaped steel having both ends fixed to the lower ends of the pair of support pillars 1A and 1A. 1B, each support frame 1 is installed in a grooved excavated groove ridge spaced apart in the longitudinal direction so that the pillars 1A stand up along the ridge wall A at a predetermined interval. .

  Reference numeral 2 denotes a corrugated earth retaining body which is constructed between pillars 1A and 1A standing along a wall A and fixed with bolts. , 3,... Are a plurality of corrugated plates constituting the corrugated earth retaining body 2, and each corrugated plate 3 is formed by bending a steel plate to have an upward inclined surface 3 A, a front vertical surface 3 B, and a downward inclined surface. By forming 3C and the rear vertical surface 3D, the substantially trapezoidal concave portions 3E and convex portions 3F are alternately and continuously viewed from the side. Then, the lower edge of the upper corrugated plate 3 and the upper edge of the lower corrugated plate 3 are overlapped and fastened with bolts and nuts to be connected in the vertical direction.

  4, 4,... Indicate a number of drain holes that are formed on the downward inclined surface 3 </ b> C of each corrugated plate 3 and open obliquely downward. The drain holes 4 are arranged at predetermined intervals along the longitudinal direction of the corrugated plate 3, and by opening downward, the water on the back surface is quickly drained into the troughs to form the corrugated earth retaining body 2. It solves the situation that water pressure is applied and the backside earth and sand collapses due to accumulation of water between the walls A.

The corrugated earth retaining body 2 according to the present embodiment has the above-described configuration, and is light in weight because the frame body is not required by configuring it with the corrugated plate 3, and a plurality of corrugated plates 3 are connected at a factory. It may be conveyed as a corrugated earth retaining body or connected on site. And as shown in FIG. 4, the support | pillar 1A and the corrugated earth retaining body 2 are attached by sticking the packing material 5 which consists of sponge or a nonwoven fabric between the pillar 1A and the corrugated earth retaining body 2, and sandwiching them. This prevents the backside sediment from flowing through the gap.

Next, 6,6, ... denotes a filter housed in side the recesses 3 E after each corrugated plate 3. Since each of the filters 6 is a coarse filter in which a large number of voids are formed by entwining plastic wires, for example, the outflow property of the back water is not impaired, and clogging due to earth and sand is also caused. Since it is small, it can be used over a long period of time.

  Furthermore, 7 shows the water-permeable sheet | seat provided in the state which covered the rear surface 2A of the corrugated earth retaining body 2 including the said filter 6, and the nonwoven fabric is used for this water-permeable sheet 7, for example. Since the corrugated earth retaining body 2 is substantially planar by spreading the water-permeable sheet 7 on the rear surface 2A, the corrugated earth retaining body 2 is formed when the space causing the landslide collapse is refilled between the wall A. Can be prevented as much as possible.

Moreover, since the water-permeable sheet 7 is provided in a state of covering the filter 6 and the filter 6 is not in direct contact with the back soil, plants such as moss are difficult to grow and the water-permeable function can be maintained for a long time. .

  Next, FIG. 5 shows a corrugated earth retaining groove according to the second embodiment. In the present embodiment and other embodiments described later, the same components as those of the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted. In the figure, reference numeral 11 denotes a corrugated earth retaining member erected on the columns 1A and 1A, 12 denotes a plurality of corrugated plates constituting the corrugated earth retaining body 11, and each corrugated plate 12 is formed by bending a steel plate. By forming the upward inclined surface 12A, the front vertical surface 12B, the downward inclined surface 12C, and the rear vertical surface 12D, the substantially trapezoidal concave portions 12E and convex portions 12F are alternately continuous when viewed from the side.

  .., 13 indicate downward drain holes formed in the downward inclined surface 12C of the corrugated plate 12, and 14, 14,... Indicate lateral drain holes formed in the front vertical surface 12B. In this way, the corrugated plate 12 is provided with the lateral drainage hole 14 in addition to the downward drainage hole 13, so that the permeable type retaining fence can cope with drainage when there is a large amount of precipitation, and there is a large amount of precipitation. It is suitable for use in areas where water retention capacity is small.

  Further, FIG. 6 shows the third embodiment, and the feature thereof is that the corrugated earth retaining member 21 is composed of a plurality of perforated corrugated plates 3 and 3 having drain holes 4 from the bottom to the middle. On the upper side, a plurality of non-perforated corrugated plates 22 and 22 having no drain holes are used.

  According to the present embodiment, by combining the single or plural perforated corrugated plates 3 and the non-perforated corrugated plates 22, the water-permeable surface and the water-impermeable surface can be set at an arbitrary height according to the local situation. Since it can be set, the cost of the fence fence to be installed can be reduced.

  In each embodiment, the number and arrangement of the drain holes 4, 13, and 14 provided in the corrugated earth retaining bodies 2, 11, and 21 may be appropriately selected in consideration of the situation of the installation site.

1 to 4 relate to a first embodiment of the present invention, and FIG. 1 is a perspective view showing the overall configuration of a permeable type retaining fence fence. It is a front view of a permeable type retaining fence fence. It is an III-III arrow direction enlarged sectional view in FIG. It is a fragmentary perspective view of a permeable type earth retaining fence fence. It is a front view of the permeable type retaining fence fence concerning a 2nd embodiment. It is a front view of the permeable type retaining fence fence concerning a 3rd embodiment.

Explanation of symbols

1A Prop 2, 11, 21 Corrugated earth retaining body 2A Rear surface 3, 12 Corrugated plate 3E Recess 4 Drain hole 6 Filter 7 Water permeable sheet 14 Lateral drain hole 22 Non-hole corrugated plate

Claims (6)

The concave and convex portions are formed by bending a plurality of support columns standing up and down along the wall and bending the steel plate and continuously forming an upward inclined surface, a front vertical surface, a downward inclined surface and a rear vertical surface. Consists of a plate body that is continuous in the vertical direction, and is housed in the recess facing the corrugated wall, a corrugated earth retaining body erected between the columns, a plurality of drain holes formed in the corrugated earth retaining body A water-permeable earth retaining fence constructed with a filter.   2. The water-permeable retaining fence according to claim 1, wherein the drainage hole is formed in the corrugated earth retaining body in a substantially downward state.   2. The permeable type earth retaining fence according to claim 1, wherein the filter is formed into a rough shape having innumerable voids by entwining a wire.   The water-permeable type earth retaining shelf according to claim 1, wherein a water-permeable sheet is spread on the rear surface of the corrugated earth retaining body in a state of covering the filter. By separating the columns along the longitudinal direction of the excavated dredging wall, bending the steel plate and continuously forming an upward inclined surface, a front vertical surface, a downward inclined surface and a rear vertical surface, A corrugated earth retaining body having convex portions formed continuously in the vertical direction and having a number of drain holes is installed between the columns, a filter is accommodated in the concave portion facing the wall, and the wave An installation method for permeable type retaining fence fences, in which the space between the earth retaining body and the anchor wall is backfilled with earth and sand.   The installation method of the permeable type earth retaining fence according to claim 5, wherein a water permeable sheet is spread on the rear surface of the corrugated earth retaining body after the filter is accommodated in the concave portion.

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