JP2015048673A - Slope face protection structure and formation method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slope face protection structure capable of surely and easily connecting a stone-filled basket of a slope face part and a stone-filled basket of a lowland part, and capable of surely preventing sliding-down of the stone-filled basket of the slope face part.SOLUTION: A slope face protection structure 100 of the present invention is provided with a slope face protection member 120 placed on a slope face 90 and composed of a first stone-filled basket 60 formed in a box shape by combining a wire net panel and a lower end member 140 arranged in the direction for separating from the slope face from the lower end of the slope face and connected to the slope face protection member, and the lower end member is composed of a second stone-filled basket 10 having a back face part 12 positioned on the lower end side of the slope face, arranged substantially vertically and composed of a wire net and a front face part 11 positioned on the separated side from the slope face, arranged substantially vertically and composed of the wire net, and an upward projected projection part exists in an upper part of the back face part, and the projection part is inserted inside the first stone-filled basket of the slope face protection member.

Description

  The present invention relates to a slope protection structure and a method for forming the same, and more particularly to a slope protection structure using a stone custody and a method for forming the same.

  In order to prevent the slopes of rivers, beaches, roads, and buildings from collapsing due to wind and rain, etc., it has been conventionally protected by so-called futons. Futon-mochi is made of a wire mesh in a bag shape or box shape and filled with stones.

  In such a slope protection (slope protection structure), in order to protect a slope with a relatively gentle slope, a futon is placed on the slope and a futon is also placed on the flat area that continues from the lower end of the slope. Often to do. The futon mochi on the flat ground serves as a stopper to prevent the futon mochi placed on the slope from sliding down the slope.

  For example, Patent Document 1 discloses a first trunk net for a highland (a flat land following a slope) and a second for a slope which form a bottom mesh and a side mesh by partitioning a single wire mesh material. The first and second trunk nets are connected to the side nets via a batting net. It is disclosed that the second and third trunk nets are connected to each other by overlapping the side nets. In the technique disclosed in Patent Document 1, the first trunk net for high altitude and the second trunk net for slope are connected to each other through a batting net, and the second trunk net and the lowland are connected to each other. The third trunk net for use is said to be able to manufacture a sloped futon basket efficiently by making the developed shape of each trunk net a simple rectangle by overlapping and connecting the side nets. ing.

JP-A-6-146237

  However, since the second and third trunk nets for the slope are overlapped and connected using coils, the side lines can be used for connection on one side net. Yes, but the other side network cannot use frame lines for connection. In this case, since the rhombus wire mesh is used for the connection, the strong connection cannot be performed, and there is a problem that the rhombus wire mesh used for the connection extends and the futon basket is displaced or deformed.

  Furthermore, in a futon using a welded wire mesh so that the deformation of the cage shape is small, a coil cannot be used to connect the two side meshes when they are diagonally overlapped. I can't. Attempting to connect two side nets that are diagonally overlapped with a connecting member other than a coil is very time-consuming, so at present, there is a gap between the second trunk net for slope and the third net for flat ground. A gap with a triangular cross-section remains and is filled with earth and sand. However, there is a problem that the earth and sand in the triangular gap flows out due to rain and the second trunk net for the slope slides down the slope.

  The present invention has been made in view of the above points, and the object of the present invention is to reliably and easily connect the stone cradle of the slope portion and the stone cradle of the lowland portion, and the stone of the slope portion. An object of the present invention is to provide a slope protection structure that can surely prevent sliding-off of clogs.

  The slope protection structure of the present invention is a slope protection member made of a first stone claw, which is placed on a slope and combined with a wire mesh panel to form a box, and from the lower end of the slope in a direction away from the slope. A lower end member disposed and connected to the slope protection member, the lower end member being located on the lower end side of the slope and disposed substantially vertically, and separated from the slope A second stone cradle having a front part made of a wire mesh located on the side and arranged substantially vertically, and a protrusion protruding upward exists at the upper part of the rear part, And a configuration in which the slope protection member is inserted into the first stone jar. Here, the fact that the back part and the front part are arranged substantially vertically means that the ground on which the lower end member is placed cannot be completely leveled at the construction site, or that it is tilted by the squeezing after stone filling. It means that the lower end member is slightly deviated from the vertical due to distortion due to processing accuracy from the wire mesh.

  The back surface portion is formed of a welded wire mesh formed by welding a plurality of vertical lines and horizontal lines made of metal so as to intersect at right angles, and the protruding portion is the uppermost portion of the horizontal lines. It is preferable that it is the upper end part of the said vertical line which protrudes upwards from the said horizontal line located in.

  It is preferable that the projecting portion is in contact with the wire mesh panel of the first stone cradle to prevent the slope protection member from moving downward in the inclination direction.

  The height of the front portion is preferably equal to or greater than the distance between the back portion and the front portion.

  The lower end member is formed by arranging a plurality of vertical lines and horizontal lines made of metal so as to intersect at right angles and welding the intersections, and the fold line is parallel to the horizontal line. The bent panel member has an L-shaped bent panel member formed in a side view and has a bottom surface portion that is placed on the ground and an elevation surface portion that is bent and raised from the bottom surface portion. Preferably, the front portion is the upright portion of one of the bent panel members, and the back portion is the upright portion of another of the bent panel members.

  It is preferable that the front part and the back part are connected by a reinforcing member provided with a connecting part at both ends.

  A method for forming a slope protection structure according to the present invention includes a slope protection member made of a first stone casket combined with a wire mesh panel and a lower end member made of a second stone cradle made of wire mesh. A method of forming a slope protection structure, comprising: a step A in which a box-shaped first stone-clad precursor combined with a wire mesh panel is placed on a slope; and a second comprising a wire mesh at the lower end of the slope. A step B for placing the stone-filled cocoon precursor and a protrusion projecting upward from the upper part of the wire mesh constituting the second stone-filled potato precursor is inserted into the first stone-filled potato precursor. And a step D of filling stones in the first stone candy precursor after the insertion step.

  It is preferable to further include a step E of filling stones into the inside of the second stone-clad precursor before the step D.

  In this invention, since the protrusion part which protruded on the back part of a lower end member is inserted in the inside of the 1st stone jar which comprises a slope protection member, a slope protection member and a lower end member are ensured. And it can connect easily and a protrusion part can prevent the sliding-off of a slope protection member reliably.

It is a schematic diagram showing a side surface of the slope protection structure according to the first embodiment. It is a schematic diagram which shows the front of a lower end member. FIG. 3 is a schematic AA arrow view of FIG. 2. It is a typical exploded view of a part of lower end member. FIG. 3 is a schematic BB arrow view of FIG. 2. It is a typical side view of a lower end member. It is a schematic diagram which shows a connection member. It is a schematic diagram which shows a part of structure of a slope protection member. It is a schematic diagram which shows the relationship between a slope protection member and a protrusion part. It is a schematic diagram which shows the side surface of the slope protection structure which concerns on a comparative example. 6 is a schematic diagram illustrating a side surface of a slope protection structure according to Embodiment 2. FIG. It is a schematic diagram which shows the side surface of the slope protection structure which concerns on another comparative example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following drawings, components having substantially the same function are denoted by the same reference numerals for the sake of brevity. In addition, when there are a plurality of the same members in one drawing, the reference numerals of some members are omitted to make the drawing easy to see.

(Embodiment 1)
FIG. 1 schematically shows a slope protection structure 100 according to Embodiment 1 as viewed from the side. On the slope 90, a slope protection member 120 made of the first stone cradle 60 is placed, and on the base surface 92 that extends horizontally from the slope bottom end 91, a bottom end member 140 made of the second stone cradle 10 is placed. It is on. Note that the lower end portion of the slope protection member 120 is covered and hidden by the side surface portion 19 of the first stone-clad bowl 10. The base surface 92 is a portion where the ground 900 is excavated to mount the lower end member 140, and extends horizontally from the slope lower end 91 in a direction away from the slope 90. The slope protection structure 100 is formed by connecting a slope protection member 120 and a lower end member 140.

  Of the lower end member 140, the rear surface portion 12 made of a wire mesh is disposed substantially vertically on the slope lower end 91 side, and the front surface portion 11 is disposed substantially vertically at a position facing the rear surface portion 12 away from the slope lower end 91. Has been.

  The lower end member 140 is shown in FIGS. The front surface, the bottom surface, and the back surface of the second stone pack 10 constituting the lower end member 140 are formed by combining two bent panel members 16 and 17 and connecting them with coils 50 and 50. The bent panel members 16 and 17 are formed by bending a rectangular welded wire mesh panel, are L-shaped in a side view, and are self-supporting. The elevation part of one bent panel member 16 is the front part 11, and the elevation part of the other bent panel member 17 is the back part 12. The welded wire mesh panel is composed of an iron wire having zinc aluminum alloy plating on the surface, and is formed by arranging a plurality of horizontal lines and vertical lines so as to intersect at right angles and welding the intersections. The folding panel members 16 and 17 are formed by bending a vertical line at a right angle, and the fold line is parallel to the horizontal line.

  The two bent panel members 16 and 17 are connected by abutting the horizontal lines located at the end of the bottom surface portion and inserting the horizontal lines into the coil 50. And as shown in FIG. 5, the two bending panel members 16 and 17 are connected by the stays 52 and 53 which are reinforcement members, and when the stone is filled inside, the shape as a ridge is maintained. As shown in FIG. 7, the stays 52 and 53 are provided with connecting portions 54 and 54 in which both ends of the iron wire are bent into hook shapes. The short stay 52 and the long stay 53 connect the front surface portion 11 and the bottom surface portion following the front surface portion 11. Further, only the short stay 52 connects the back surface portion 12 and the bottom surface portion following the back surface portion 12. The side surface portion 19 and the bottom surface portion are also connected by a short stay 52.

  The connecting portion 54 of the stays 52 and 53 is hooked to the vertical line of the welded wire mesh, and in the portion R where two adjacent bent panel members 16 and 16 (17 and 17) are connected as shown in FIG. It is hooked by the vertical line of the member and contributes to the connection of the two bent panel members 16, 16 (17, 17).

  A plurality of bent panel members 16 and 17 are arranged in the lateral direction, and adjacent portions are connected by a coil 50.

  As shown in FIG. 4, in the upper end portion of the back surface portion 12, the vertical line protrudes upward from the horizontal line 55 located at the uppermost portion, and the upper end portion from which the vertical line protrudes forms protrusions 56, 56,. doing.

  As shown in FIG. 6, a side surface portion 19 made of a welded wire mesh is connected to the front surface portion 11, the back surface portion 12, and the bottom surface portion by coils 50, 50, 50 on the side surface of the lower end member 140. Further, the upper surface portion 13 made of a wire mesh is connected to the side surface portion 19 by a coil 50 'having a large diameter. The side surface portion 19 has a rectangular shape and covers the lower end (front surface portion) of the slope protection member 120 shown in FIG.

  Next, the configuration of the slope protection member 120 will be described. As shown in FIG. 8, the front surface, the bottom surface, and the rear surface of the first stone claw 60 constituting the slope protection member 120 are composed of panel members 61 and 61. The bent panel member 61 is formed by bending a welded wire mesh panel into an L shape in a side view. In the bent panel member 61, the length of the bottom surface portion placed on the slope is set longer than the height of the elevation surface portion. The folding panel members 61 are arranged along the slope direction, and in the two folding panel members 61 and 61 adjacent in the vertical direction, the front surface of the upper folding panel member 61 is the upper end of the bottom surface of the lower folding panel member 61. It is located in the portion and doubles as the back surface of the lower first stone packed basket 60. The first stone claw 60 at the upper end is formed by separately preparing a back metal mesh.

  As shown in FIG. 5, the slope protection member 120 is placed on the lower end member 140 from above the back surface portion 12 of the lower end member 140, and protrudes from the wire mesh on the bottom surface of the first stone crusher 60. Is inserted into the slope protection member 120. The uppermost horizontal line on the forefront of the slope protection member 120 is connected to the upper surface portion 13 of the lower end member 140 by a coil 50 ′.

  FIG. 9 shows the positional relationship between the first stone claw 60 constituting the slope protection member 120 and the protruding portion 56. The folding panel member 61 that constitutes the first stone custody 60 has a vertical line 62, a bent part horizontal line 63, and a bottom part first horizontal line 64. The vertical line 62 is bent at a right angle at a bent portion horizontal line 63 existing in the bent portion to constitute a front surface and a bottom surface. The bottom part first horizontal line 64 is a horizontal line located closest to the bent part horizontal line 63 among the horizontal lines on the bottom surface. The protruding portion 56 is inserted between the bent portion horizontal line 63 and the bottom surface first horizontal line 64 and finally comes into contact with the bottom surface first horizontal line 64. In this way, the protrusion 56 prevents the slope protection member 120 from sliding down below the slope.

<Method for Forming Slope Protection Structure 100>
First, the ground surface 900 is excavated to form a slope 90 and a base surface 92. Since it is difficult to place a second stone paddle on the ground by forming a surface that rises vertically from the front end and the rear end of the base surface 92, as it goes upward from the front end and the rear end of the base surface 92. Drilled diagonally so that the hole expands.

  Next, a suction preventing material made of a nonwoven fabric is laid on the base surface 92. This is to prevent the earth and sand on the foundation surface 92 from entering (sucking out) the inside (between the stones) of the stone clogs due to rain.

  Thereafter, the bent panel members 16 and 17 are placed on the base surface 92 and connected and reinforced by the coils 50 and 50 and the stays 52 and 53, and the side surface portion 19 is connected by the coil 50 and reinforced by the stay 52, A second stone-filled soot precursor in a state free of water is formed (step B). At this time, a space of about several tens of centimeters exists between the back and front portions and the ground.

  Then the stone is packed into the second stone-clad precursor. As the stone, for example, crushed stone, crushed stone, crushed concrete or the like can be used. The stone is packed up to the vicinity of the horizontal line 55 located at the top of the horizontal lines of the back surface part 12 (process E).

  Next, the outer surface side of the back surface portion 12 of the second stone-filled cocoon precursor is covered with a sucking prevention material to refill the space between the back surface portion 12 and the ground. Refill the space on the front side. Then, lay out anti-suction material on the slope 90. To prevent the soil on the slope 90 from entering (sucking out) the inside of the stone cave (between stones) due to rain, and preventing the stone clog from sinking to the ground It is.

  Next, a plurality of bent panel members 61 are arranged on the slope, and the side surfaces are connected to the bent panel member 61 to form a first stone-clad precursor having no upper lid (step A). Then, the protrusions 56, 56,... Of the second stone packed lees precursor are inserted into the first stone packed lees precursor located at the lower end (step C). At this time, since the second stone-filled cocoon precursor is filled with stones, even if the first stone-filled cocoon precursor is about to slide down the slope 90, the protrusions 56, 56,. The first stone packed lees precursor can be supported without moving.

  Then, the stone is packed to the upper end of the second stone-clad precursor. An upper surface portion 13 is placed thereon and connected to form a second stone packed jar 140. Further, the rear end of the upper surface portion 13 and the first stone-clad precursor are connected by a coil.

  Further, stones are packed into the first stone-clad precursor (step D), and an upper surface member made of a wire net is placed and connected to the first stone-clad precursor to form a first stone-clad jar 120.

<Comparative example>
FIG. 10 shows a slope protection structure 200 according to a comparative example. The slope protection member 220 of the comparative example has the same structure as the slope protection member 120 of the first embodiment. The lower end member 240 of the comparative example is formed by stacking three cuboid-shaped stone-clad jars 210. These three stone packed bowls 210, 210, 210 are stacked while being shifted little by little in the back direction.

  Between the front surface 221 of the slope protection member 220 of the comparative example and the back surface 212 of the lower end member 240, there is a triangular boundary soil portion 99 in a side view. In general, a stone claw is usually a rectangular parallelepiped shape, and in particular, a stone claw made of a welded wire mesh is mostly a rectangular parallelepiped shape because of cost. For this reason, when the stone jar placed on the slope and the stone jar placed on the flat ground are combined, a boundary earth and sand portion 99 is generated.

  Since the boundary sediment portion 99 is deformed by pressure or the sediment flows out by rain, the slope protection member 220 may slide down and the front surface 221 of the slope protection member 220 may be deformed. However, in the slope protection structure 100 of the present embodiment, since a part of the lower end member 140 is shared with a part of the slope protection member 120 and there is no boundary earth and sand part, the problem as in the comparative example is Does not occur. Further, the projecting portions 56, 56,... Can reliably prevent the slope protection member 120 from slipping.

  Furthermore, in the lower end member 140 of the present embodiment, the height of the front surface portion 11 and the depth of the bottom surface portion (the length in the sloped direction) are the same, but the three stone crabs 210 are shifted little by little in the back surface direction. When the lower end member 240 of the comparative example that has been stacked is intended to contain the same amount of stone as the lower end member 140 of the first embodiment, the excavation length at the bottom surface becomes about 1.5 times that of the first embodiment. Therefore, in the comparative example, the construction cost is excessive and the construction period is long. Moreover, in this embodiment, since excavation length can be shortened, the flat ground which spreads below a slope can be ensured widely.

(Embodiment 2)
A slope protection structure 300 according to Embodiment 2 shown in FIG. 11 protects riverbanks and beach slopes. The slope protection member 320 according to the second embodiment has the same structure as the slope protection member 120 of the first embodiment, and the lower end member 340 according to the second embodiment has the same structure as the lower end member 140 of the first embodiment. doing.

  FIG. 12 shows a slope protection structure 400 according to a comparative example for protecting riverbanks and beach slopes. The slope protection member 420 of the comparative example has the same structure as the slope protection member 320 of the second embodiment, but the lower end member 440 of the comparative example has two rectangular parallelepiped shaped stone bales 410 arranged in the front and back in the horizontal direction. Is formed. The reason why the two stone packed bales 410 are arranged in the front and rear in the horizontal direction is to prevent sliding and scouring.

  Even in this comparative example, the boundary earth and sand portion 499 exists between the slope protection member 420 and the lower end member 410, but this does not exist in the slope protection structure 300 of the present embodiment, so that it is the same as in the first embodiment. The effect of. Further, the slope protection structure 400 of the comparative example has the lower end member 440 elongated in the horizontal direction in order to prevent the slope protection member 420 from slipping (the length in the horizontal direction is 4.5 times the height). ). However, in the lower end member 340 of the second embodiment, the height is 2.5 times and the length is about half that of the comparative example, and the horizontal length and height of the bottom surface are the same. With such a structure, even when there is a rock in the water near the shoreline and the tip of the lower end member 410 rides on the rock in the slope protection structure 400 of the comparative example, the slope of the second embodiment is not possible. If it is the protective structure 300, construction will be possible.

(Other embodiments)
The above-described embodiment is an exemplification of the present invention, and the present invention is not limited to these examples, and these examples may be combined or partially replaced with known techniques, common techniques, and known techniques. Also, modified inventions easily conceived by those skilled in the art are included in the present invention.

  The material and diameter of the welded wire mesh are not particularly limited. The member that connects the welded wire meshes or the wire mesh panel is not limited to the coil, and may be connected with a wire or the like, or a U-shaped screw, a perforated metal plate, and a bolt may be used.

  The location of the slope and the slope are not particularly limited. The legal gradient is preferably 10% or more, and more preferably 10% or more.

  In the lower end member, it is preferable that the height of the front surface portion be equal to or greater than the distance between the front surface portion and the back surface portion. By doing in this way, the amount of horizontal excavation for installing a lower end member can be reduced, the construction cost can be reduced, and the flat land portion or the waterside portion below the slope can be widened. In addition, the slope protection member can be reliably prevented from slipping down.

  In the slope protection member, the bent panel members may be connected by a coil or reinforced by a stay. The slope protection member may be formed from a wire mesh panel in which a rhombus wire mesh is stretched on a frame line. Further, in the folded panel member constituting the slope protection member, there may be no horizontal line in the bent part, and in this case, the protruding part hits the lower end member on the horizontal line arranged closest to the bent part. It is preferable to be rubbed.

  The length (horizontal width) of the bending panel member which comprises a lower end member is not specifically limited. Although two types of bent panel members having different lengths are used in the first embodiment, they may all be the same length, or three or more types having different lengths may be used.

  It is preferable that the surface of the metal mesh constituting the stone-packed rust is rust-proof, and specifically, rust-proof plating (for example, zinc-containing plating), rust-proof coating or rust-proof paint is applied. Is preferred. Zinc-containing plating includes zinc plating and zinc alloy plating. Examples of the antirust coating include a thermoplastic resin coating. Examples of the rust preventive paint include JIS standard rust preventive paint (such as K5621) for steel frames and iron wires, and Japanese paint industry standard rust preventive paint.

  Moreover, you may form a lower end member with the metal-mesh panel which stretched the rhombus metal-mesh on the frame line. In this case, what is necessary is just to provide the protrusion part which protrudes upwards in the upper frame of the metal-mesh panel which comprises a back part.

  As explained above, the slope protection structure according to the present invention can surely prevent the stone clogs of the slope part from slipping down, and protect the slopes on the sides of roads and buildings, and on the beaches and riverbanks. Useful as such.

10 second stone packed bowl 11 front surface portion 12 rear surface portions 16, 17 folded panel members 50, 50 ′ coils 52, 53 stays (reinforcing members)
54 Connecting portion 56 Protruding portion 60 First stone paddle 90 Slope 91 Slope lower end 100, 300 Slope protection structure 120, 320 Slope protection member 140, 340 Bottom member

Claims (8)

A slope protection structure for protecting the slope,
A slope protection member made of a first stone-clad jar placed on a slope and combined with a wire mesh panel to form a box,
A lower end member arranged in a direction away from the slope from the lower end of the slope, and connected to the slope protection member,
The lower end member has a rear portion made of a wire mesh positioned on the lower end side of the slope and arranged substantially vertically, and a front portion made of a wire mesh placed on the side away from the slope and arranged substantially vertically. It consists of two stone candy
The upper part of the back part has a protruding part protruding upward,
The slope protection structure, wherein the protrusion is inserted into the first stone claw of the slope protection member. The back portion is formed of a welded wire mesh formed by welding a plurality of vertical lines and horizontal lines made of metal so as to intersect at right angles,
2. The slope protection structure according to claim 1, wherein the protruding portion is an upper end portion of the vertical line protruding upward from the horizontal line positioned at the uppermost portion of the horizontal line.   3. The method according to claim 1, wherein the protruding portion is in contact with the wire mesh panel of the first stone cradle and prevents the slope protection member from moving downward in the inclination direction. Surface protection structure.   The slope protection structure according to any one of claims 1 to 3, wherein a height of the front portion is equal to or greater than a distance between the back portion and the front portion. The lower end member is formed by arranging a plurality of vertical lines and horizontal lines made of metal so as to intersect at right angles and welding the intersections, and the fold line is parallel to the horizontal line. A side panel L-shaped folded panel member formed by bending
The bent panel member has a bottom surface portion that is placed on the ground, and an elevation surface portion that is bent and raised from the bottom surface portion,
The front portion is the elevation portion of one of the folded panel members;
The slope protection structure according to any one of claims 1 to 4, wherein the back surface portion is the elevation surface portion of another bent panel member.   The slope protection structure according to any one of claims 1 to 5, wherein the front surface portion and the back surface portion are connected by a reinforcing member having connecting portions at both ends. It is a method of forming a slope protection structure comprising a slope protection member made of a first stone claw made of a metal mesh panel and a lower edge member made of a second stone fence made of a wire mesh. And
A step A of placing a first stone-clad precursor, which is a box-shaped combination of wire mesh panels, on the slope;
Step B for placing a second stone-clad precursor made of wire mesh at the lower end of the slope,
Inserting a protrusion projecting upward from the upper part of the wire mesh constituting the second stone-clad precursor into the first stone-clad precursor; and
A method for forming a slope protection structure, which includes, after the inserting step, a step D of filling a stone in the first stone-filled cocoon precursor.   The method for forming a slope protection structure according to claim 7, further comprising a step E of filling a stone into the inside of the second stone-clad precursor before the step D.

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