JP5023371B2 - Stone packed bowl - Google Patents

Description

  The present invention relates to a stone claw formed by joining a plurality of wire mesh panels made of welded wire mesh to form a slope.

  A stone-packed bowl is a bowl-shaped object formed by joining a plurality of wire mesh panels, and filled with a filling material such as cobblestone or walnut stone. Ishizume Pass is used for earth retaining work on slopes and revetment formation work. A plurality of stone crabs filled with filling material are arranged in a horizontal row on a slope such as embankment or natural ground, and they are stacked and installed to form a retaining wall.

  Conventional stone-packed caskets have a rectangular parallelepiped shape in which the entire surface (front, back, top, bottom, and side surfaces) is configured with a rectangular wire mesh panel, and one that is configured so that the front and bottom surfaces form an acute angle. . When using the former stone claw, a staircase-shaped retaining wall is formed, but when using the latter stone claw, it can be stacked with the front face flush to form a slope. Therefore, the appearance of the slope becomes better. For this reason, the latter stone custody is used as a retaining wall in places where the appearance is important.

  By the way, the conventional stone-clad basket is generally formed of a highly flexible rhombus wire mesh. However, when the retaining wall is formed using such a conventional stone claw, the back surface, top surface, bottom surface, and side face contact the adjacent stone custody or back soil, while the front surface is not supported from the outside. For this reason, there is a problem that the earth pressure or the filling material acts to concentrate the front surface on the front surface, and the front surface is greatly expanded and deformed outward. In particular, the stone-crusted bowl with a slope on the front surface has a large amount of deformation, and the slope formed on the same plane during construction expands and deforms over time even though it was constructed with an emphasis on appearance. The height of the stone crabs is lowered by the amount of expansion and deformation of the front surface, the sinking of the upper stone crabs and tilting, etc., making the slope easily cluttered and the appearance of the slope remarkably There was a problem of being damaged.

  As a means for preventing the deformation of the front surface of a stone claw whose front surface forms a slope, for example, in Patent Citation 1, in a stone crust formed entirely with a rhombus metal mesh, a reinforcing bar is horizontally placed on the front surface thereof. It is described that it is provided.

  Moreover, although it is regarding a rectangular parallelepiped stone claw, as a thing which prevents the expansion | swelling deformation | transformation of a front surface, in patent document 2, for example, the front surface, back surface, and side surface of a stone custody are formed with a highly rigid metal mesh. Are listed.

JP 2006-37507 A JP 2004-204626 A

  However, the stone claw described in Patent Document 1 is originally intended to suppress the buckling deformation of the main bars of the front wire mesh panel due to the pressure from above when the stone claws are stacked in multiple stages. Such a reinforcing bar provided horizontally could not prevent the front wire mesh panel from being expanded and deformed.

  Moreover, since the top and bottom wire mesh panels are formed of rhombus wire meshes, the stone mesh plate described in Patent Document 2 is deformed when the bottom wire mesh panels are deformed by the weight of the filling material and stacked in multiple stages. Along with the expansion and deformation of the bottom surface of the upper stone claw, there was a problem that the wire mesh panel on the upper surface of the lower stone claw was deformed.

  In addition, the front side of the stone custody must be fine enough to prevent the filling material from popping out, but until now, the crevice panel has only been determined empirically. The validity has never been verified. However, increasing the number of steel bars to increase the strength of the wire mesh and making the mesh finer not only increases the weight of the panel but also increases the cost. Therefore, in order to manufacture a stone crust having sufficient fineness and sufficient strength at low cost, scientific verification of the mesh structure of the wire mesh constituting the panel has been required.

  The present invention has been made in view of such points, and the object of the present invention is to provide a retaining wall with a good appearance that suppresses the expansion deformation of the front wire mesh panel forming the slope and the slope is formed to be flush with each other. It is to provide a low-cost stone candy with sufficient strength that can be maintained.

  The stone fence of the present invention is a wire mesh panel made of a welded wire mesh, and comprises a front panel, a back panel, and a side panel, the front panel having a larger diameter than the horizontal bar and the horizontal bar. The mesh of the front part which forms the slope and is formed in a horizontally long rectangle is formed in combination with the vertical bar material.

  That is, the stone fence of the present invention is a stone fence made of a plurality of wire mesh panels made of welded wire mesh to form a slope, the wire mesh panel comprising a front panel, a back panel, a side panel, The front panel has a lattice shape formed by combining a horizontal bar and a plurality of vertical bars having a diameter larger than that of the horizontal bar, and a front part that forms the slope, and the front And a bottom surface portion forming an acute angle, and the front surface portion of the front panel is characterized in that a lattice mesh is a horizontally long rectangle.

  Moreover, it is preferable that the said horizontal bar material and the said vertical bar material which the said front part of the said front panel has are the number and diameter from which the said front part of the said front panel becomes more than predetermined intensity | strength by stress analysis.

  Further, in the front portion of the front panel, the length of the vertical side of the lattice network may be 1/10 or more and 1/2 or less of the length of the horizontal side.

  Moreover, the said bottom face part of the said front panel can enlarge the space | interval between the said horizontal bar materials adjacent to the said front part.

  Furthermore, the ratio of the diameter of the horizontal bar and the vertical bar of the front panel is 5: 6, 5: 8, 5: 9, 5:13, 6: 8, 6: 9, 6:13, 8 : 9, 8:13, 9:13.

  According to the present invention, since the front part of the front panel uses a steel bar having a large diameter as a vertical bar, the front part has sufficient strength against expansion deformation. In addition, this vertical bar material and a horizontal bar material with a smaller diameter than this are combined, and the lattice mesh on the front part of the front panel is formed into a horizontally-long rectangular shape. It is possible to provide a stone claw that can be placed in a position, suppresses the expansion deformation of the front portion without increasing the weight of the stone crush, and maintains a good retaining wall with a sloped surface. it can.

It is a perspective view which shows the stone custody concerning Embodiment 1. FIG. It is a schematic diagram which shows the connection method of a front panel and a back panel. (A) The front view which looked at the front panel from the front part, (b) It is AA sectional drawing. It is the graph which compared the amount of maximum out-of-plane deformation with respect to the amount of loading about the front panel of the stone packed bowl which concerns on Embodiment 1, and the front panel of the conventional stone packed bowl. FIG. 2 is a schematic cross-sectional view when the stone-crackers according to Embodiment 1 are stacked in two stages and cut from a plane parallel to the side panel. It is typical sectional drawing when a rectangular parallelepiped-shaped stone claw is piled up two steps and cut | disconnected from a surface parallel to a side panel.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

<Embodiment 1>
FIG. 1 is a perspective view showing a stone bowl according to Embodiment 1 of the present invention. As shown in FIG. 1, the stone packed bowl 1 according to Embodiment 1 has a front surface portion that forms a slope.

  The stone pack 1 is made of a welded wire mesh, and is configured by combining a front panel 2, a back panel 3, and a side panel 4.

  The structures of the front panel 2 and the back panel 3 will be described in detail later. To briefly explain these structures, both of them are formed by bending one rectangular wire mesh panel into two, It has the part which forms the bottom face of the stone custody 1 and the part which forms the front surface or the back surface. The side panel 4 is a trapezoidal wire netting panel in which an upper side and a lower side are parallel, and one of the angles at both ends of the lower side is formed with an acute angle and the other at a substantially right angle. A pair of side panels 4 are provided opposite to the stone packed bowl 1. The upper surface portion of the stone-packed bowl 1 is open, and the filling material 5 such as cobblestone or cracked stone is packed from there to the upper face of the bowl. Then, another stone packed bowl 1 is stacked on top of this. Therefore, according to the stone cage 1 of the present embodiment, the bottom surface of the upper stone cage 1 also serves as the upper surface of the lower stone cage 1, so that the number of wire meshes used can be reduced as compared with the conventional case. The weight and cost of the stone packed bowl 1 can be suppressed.

  First, based on FIG. 2, the relationship between the front panel 2 and the back panel 3 which comprise the stone packed bowl 1 is demonstrated.

  Each panel constituting the stone packed bowl 1 is composed of a single metal mesh panel in which vertical bars 6 and horizontal bars 7 are arranged in a lattice shape and welded and fixed at the intersections. The front panel 2 is formed by bending each vertical bar 6 of the wire mesh panel at an acute angle to form a front surface portion 8 that forms a slope and a bottom surface portion 9 that forms the bottom surface on the front side of the stone claw 1. . For this reason, the front part 8 and the bottom part 9 share the vertical bar 6. The angle formed by the front surface portion 8 and the bottom surface portion 9 is set in accordance with the slope gradient of the retaining wall to be installed. The rear end portion of the vertical bar 6 in the bottom surface portion 9 protrudes rearward from the horizontal bar 7 positioned on the rearmost side, and is bent at an acute angle to the inside of the stone cradle 1 to form a locking portion 10.

  Similar to the front panel 2, the rear panel 3 is formed by bending each vertical bar 6 of the wire mesh panel at a substantially right angle to form a rear surface portion 11 that is in contact with the back soil and a bottom surface on the rear side of the stone pack 1. 12 is formed. For this reason, the rear surface portion 11 and the bottom surface portion 12 share the vertical bar 6.

  A method of assembling the stone packed bowl 1 will be described.

  The engaging portion 10 formed on the bottom surface portion 9 of the front panel 2 is hooked on the horizontal bar 7 positioned on the most front side in the bottom surface portion 12 of the back panel 3 to connect the front panel 2 and the back panel 3. In the present embodiment, the end portion of the horizontal bar 7 of the side panel 4 on the side connected to the back panel 3 is bent in a U-shape toward the outside of the stone claw 1. Therefore, a pair of side panels 4 are arranged across the connected front panel 2 and back panel 3, the U-shaped part is hooked on the vertical bar 6 of the back panel 3, and the side panel 4 and the back panel 3 are connected. To do. Then, the front panel 2 and the side panel 4 are fixed by a coiled metal fitting (not shown) or the like.

  Next, the structure of the front panel 2 will be described.

  In the past, it was common to form a wire mesh panel made of stone with a 6 mm diameter steel bar, but the inventors of the present application used a steel bar with a larger diameter than before in order to increase the strength of the panel. And decided to form the front wire mesh. However, if all the steel bars are replaced with large diameters, the weight of the panel is increased and the cost of the steel bars becomes expensive.

In order to compare the small and large diameter steel bars, the 6 mm diameter steel bars used in conventional stone-packed caskets are used as the small diameter steel, and the large diameter steel bars are generally used as an example. 9 mm diameter steel bars were used. First, with respect to 6 mm diameter and 9 mm diameter steel bars, the cross-sectional area (A) and the cross-section coefficient (Z) calculated from the following formulas were obtained and shown in Table 1.
A = π × ^(diameter) 2/4
Z = π × ^(diameter) 3/32

  As can be seen from Table 1, the 9 mm diameter for the cross-sectional area was about 2.25 times the 6 mm diameter, and the 9 mm diameter for the cross-sectional modulus was about 3.37 times the 6 mm diameter. The load when the force acting on the member cross section reaches the yield stress, that is, the load when the member shifts from the elastic deformation to the plastic deformation as the load increases is set as the allowable proof stress. Considering the allowable axial force, allowable shear force and allowable bending moment when the allowable load capacity is applied, the allowable axial force and allowable shear force are proportional to the cross-sectional area, whereas the allowable bending moment is proportional to the section modulus . It has also been found that the weight of the steel bar is proportional to the cross-sectional area. Therefore, with respect to the allowable axial force and allowable shear force, the strength of the steel bar increases in proportion to the increase in the weight of the steel bar, whereas with respect to the allowable bending moment, the strength of the steel bar increases more than the increase in the steel bar weight. To do. From the above, if a large diameter steel bar is placed at a position where the stress burden due to the bending moment is greater than the axial force or shearing force of the stress acting on the wire mesh panel, the large diameter steel bar will be more efficiently Can be used. Therefore, it was decided to use a steel bar with a large diameter for the vertical bar material of the wire mesh panel and to use a steel bar with a smaller diameter for the horizontal bar material.

  Further, conventionally, the mesh of the welded wire mesh constituting the stone cradle has only been substantially square, but the inventors have studied various conditions for the mesh of the wire mesh, and as a result, the vertical bar has a large diameter. In the case of using steel bars, it has been found that it is optimal to make the mesh horizontally long rectangles. By making the mesh horizontally long rectangles, the number of large-diameter vertical bars used can be reduced, and by increasing the horizontal bars, the filling material can be prevented from falling off.

  The mesh structure of the front panel 2 set in this way is shown in FIG. 3A is a front view of the front panel 2 viewed from the front surface portion 8, and FIG. 3B is a cross-sectional view taken along the line AA, showing the bottom surface portion 9. FIG.

  As shown in FIG. 3A, in the front surface portion 8, the wire mesh constituted by the vertical bar 6 and the horizontal bar 7 has a horizontally long rectangular mesh. Here, “horizontal” is a direction that becomes horizontal when the front panel 2 is placed with the bottom surface portion 9 in contact with the ground. In the present embodiment, the length of the vertical side of the mesh is approximately 1 / 3.5 of the length of the horizontal side. The mesh of the welded wire mesh is determined by the number of vertical and horizontal steel bars that make up the panel, but if there are too many steel bars, not only will the stone claw become heavier, but the cost of the steel bars will increase, while it will be too low. The length of the vertical side of the mesh is preferably ½ or less of the length of the horizontal side, and the lower limit is 1/10 or more depending on the cost. That's fine. The size of the mesh is preferably determined according to the diameter of the steel bar used. For example, when a wire mesh panel is manufactured using a generally used 6 mm diameter and the thickest 13 mm diameter steel bar, the diameter of the 13 mm steel bar is about twice that of the 6 mm diameter steel bar. Since it is large, the section modulus that increases in proportion to the cube of the diameter is about 10 times larger. Therefore, when a 13 mm diameter steel bar is used for the vertical bar material and a 6 mm diameter steel bar is used for the horizontal bar material, the length of the vertical side of the mesh can be about 1/10 of the length of the horizontal side. However, if the cost is not considered, only the number of horizontal bars can be increased. In this case, the length of the vertical side is smaller than 1/10 of the length of the horizontal side. By forming the mesh shape of the front surface portion 8 in such a horizontally long rectangle, the front panel 2 can suppress the expansion deformation of the front surface as compared with the conventional stone claw. This will be described in detail later.

  On the other hand, as shown in FIG. 3 (b), the bottom surface portion 9 of the front panel 2 does not require the strength of the panel as much as the front surface portion 8. Largely formed. In the present embodiment, the length of the vertical side of the mesh is substantially equal to the length of the horizontal side. By forming the mesh shape of the bottom surface portion 9 of the front panel 2 in this way, when the stone crabs are stacked in multiple stages, the top surface of the upper stone cradle is opened from the bottom portion 9 of the upper stone crabs. Since the filling material partially enters the portion and fills the gaps between the stones packed in the lower stone crabs, the connection of the upper and lower stone crabs can be stabilized.

  In the present embodiment, a steel bar having a diameter of 9 mm is used for the vertical bar 6 and a steel bar having a diameter of 6 mm is used for the horizontal bar 7, but a different bar may be used. Since the stone candy is installed outdoors, it is preferable to use steel bars that have been previously plated with zinc alloy for the vertical bars 6 and the horizontal bars 7. The wire mesh panel is formed by assembling steel bars plated with zinc alloy in a lattice shape and welding lattice points. Since zinc alloy plated steel bars of 5, 6, 8 and 9 mm diameter are commercially available, it is preferable to use these commercially available zinc alloy plated steel bars from the viewpoint of reducing manufacturing costs, but hot dip galvanized steel 5, 6, 8, 9 and 13 mm diameter steel bars can also be used. Therefore, it is preferable to use steel bars selected from the diameters of 5, 6, 8, 9, and 13 mm for the vertical bar 6 and the horizontal bar 7.

  The strength against expansion deformation of the front panel 2 will be described with reference to FIG.

  In order to compare the stone cradle of this embodiment with the conventional stone cradle, a wire mesh panel in the front portion, where the greatest force is assumed to act on the stone cradle forming the retaining wall, will be examined. As the wire mesh panel of this embodiment, the front panel 2 having the mesh shape shown in FIG. 3 was used (vertical bar: 9 mm diameter, horizontal bar: 6 mm diameter). And as a conventional wire mesh panel used as a comparison object, in the front panel 2 of this embodiment, all the vertical bars 6 of the front surface portion 8 are 6 mm in diameter, and the number of the arranged bars is increased 2.5 times. Assumed. The conditions other than the vertical bars such as the sizes of the two panels compared and the angle formed by the front surface portion and the bottom surface portion were substantially the same.

  The amount of deformation to the outside of the front panel (out-of-plane deformation amount), taking into account the force with which the filling material pushes the front panel outward, and the load applied from the top of the stone pack (upload) ) Was obtained by stress analysis. Here, the stress analysis is a finite element method in which the wire constituting the wire mesh panel is replaced with a wire element.

FIG. 4 is a graph showing the maximum out-of-plane deformation amount (expansion deformation amount) obtained by calculation in each panel when the upper load per unit area is changed from 0 kN / m ² to 100 kN / m ^2. . A solid line indicates a panel of this embodiment, and a broken line indicates a graph of a conventional panel. The vertical axis is the amount of overload per unit area (kN / m ² ), and the horizontal axis is the maximum out-of-plane deformation (mm). The point X in the graph of FIG. 4 indicates that for some of the bars forming the panel, the elastic limit proof stress was exceeded, that is, the deformation shifted from elastic deformation to plastic deformation. In addition, the point Y in the graph of FIG. 4 indicates that the total plastic moment has been reached for some of the bars forming the panel, that is, the entire cross section has yielded.

  Until some bars reach the total plastic moment (Y point), the amount of deformation increases almost in proportion to the load increment, whereas after some bars reach the total plastic moment, Even with a slight increase in load, the amount of deformation increases significantly.

As can be seen from the graph of FIG. 4, the panel of this embodiment has a smaller amount of deformation than the conventional panel when subjected to the same amount of overload. In addition, the conventional panel reaches the point X when the upper load is about 30 kN / m ² , and reaches the Y point when the upper load is 80 kN / m ² , whereas the panel of this embodiment has the upper load. There is reached point X at 55 kN / ^{m 2,} overburden load is within 100 kN / ^{m 2} had never reaches the point Y.

  Even if the elastic limit yield strength is exceeded for some bars and the rigidity is reduced, the panel can continue to restrain the filling material by redistributing the stress to the steel bars in the elastic range. On the other hand, when the total plastic moment is reached for some of the bars, the rigidity of the bar is significantly reduced even with a slight increase in load. As the entire wire mesh is deformed, the panel reaches the limit for restraining the filling material.

  From the above, the panel of this embodiment has a smaller amount of expansion and deformation than the conventional panel, and even when the conventional panel receives a large load from the top, which is the limit to restrain the filling material, It can be seen that the filling material can be restrained. Since the panel of the present embodiment has higher strength against expansion deformation than the conventional panel, the stone crabs of this embodiment can form a retaining wall higher than the conventional stone crabs.

  Moreover, when the weight of the steel bar used for the panel of this embodiment and the conventional panel was calculated, the result shown in Table 2 was obtained.

  The panel of this embodiment has a slightly lower weight of the steel bar than the conventional panel. Therefore, it can be seen that the front panel 2 of the present embodiment can suppress the expansion deformation of the front panel without increasing the weight of the panel.

  Furthermore, as described above, as a conventional wire mesh panel to be compared, in the front panel 2 of the present embodiment, all the vertical bars 6 of the front surface portion 8 have a diameter of 6 mm, and the number of the bars arranged is 2.5 times. Assumed increased. That is, in the panel of the present embodiment, the number of vertical bars 6 provided on the front surface portion 8 is reduced to 1 / 2.5 compared to the conventional panel. Therefore, even in the bottom surface portion 9 that shares the vertical bar 6 with the front surface portion 8, the interval between the adjacent vertical bars 6 is wide. The gap between each other can be filled so that the filling material packed in can be engaged with each other, and the connection of the upper and lower stone packing can be stabilized. Further, by widening the interval between the adjacent vertical bars 6 in the bottom surface portion 9, the bottom surface portion 9 can absorb unevenness (unevenness) on the surface on which the stone custody is installed. It can be installed stably.

  In the present embodiment, as in the case of the front panel 2, the rear panel 3 and the side panel 4 are panels using a 9 mm diameter vertical bar material and a 6 mm diameter horizontal bar material and forming a horizontally long rectangular mesh. is doing. Accordingly, the back panel 3 and the side panel 4 are also greatly improved in strength against expansion deformation.

  The rear side of the rear surface portion 11 and the bottom surface portion 12 of the back panel 3 is in contact with the back soil, and the force that the filling material 5 pushes the panel to the outside is canceled by the force that the back soil pushes back. Although the strength may be set lower than that of the panel 2, in order to prevent the filling material 5 from falling off, it is preferable to make the mesh into a horizontally long rectangle. Like the bottom surface portion 9 of the front panel 2, the front side of the bottom surface portion 12 of the back panel 3 preferably has a larger interval between the adjacent horizontal bars than the back side. As a result, when piled stone caskets are stacked in multiple stages, the gap between each other can be filled so that the filling materials packed in the upper and lower stone jars are engaged, and the connection between the upper and lower stone jars is stabilized. Can do. Moreover, the bottom part 12 can absorb the unevenness (unevenness | corrugation) of the surface where a stone custody is installed, and a stone custody can be installed stably.

  Further, the side panel 4 is in contact with the adjacent stone claw, and the force caused by the filling material is canceled out by the force that the adjacent stone claw pushes back. Although it is good, in order to suppress the falling off of the filling material, it is preferable that the mesh is a horizontally long rectangle.

  Further, a method for connecting the upper and lower sides of the stone candy is described with reference to FIG.

  FIG. 5 schematically shows a structure in which two stone crabs are stacked one above the other. This figure is a cross-sectional view of the stone candy cut from a plane parallel to the side panel 4, but the side panel 4 is not shown. The upper and lower stone crabs form a slope with the front surface portion 8 of the front panel 2 being flush with each other. In order to prevent the inflow of soil into the stone jar, when installing the stone jar, it is preferable to lay a sheet made of a nonwoven fabric or the like on the back side soil in advance.

  The front surface portion 8 and the bottom surface portion 9 of the front panel 2 are supported by the reinforcing member 13. The reinforcing member 13 is a long member, and both ends thereof are bent into a U shape to form a bent portion. Even if the filling material 5 is packed by hooking the one bent portion on the vertical bar 6 on the front surface portion 8 and hooking the opposite bent portion on the vertical rod material 6 near the engaging portion 10 on the bottom surface portion 9. The slope of the slope formed by the front panel 2 can be maintained.

  The stone crabs piled up and down are fixed by the connection fixing metal fitting 14. The connection fixture 14 is a long member having one end bent at a substantially right angle and the other end bent in a U shape to form a bent portion. The bent portion is hooked on the horizontal bar 7 located on the lower side of the front part 8 of the upper stone claw and the horizontal bar 7 located on the upper side of the front part 8 of the lower stone coffe, and approximately at right angles. The bent portion is hooked on the horizontal bar 7 on the bottom surface portion 9 of the front panel 2 of the upper stage stonework basket.

  Conventionally, the upper and lower stacks of stone crabs are divided into a horizontal bar 7 located on the lower side of the front part 8 of the upper pallet and a horizontal bar 7 located on the upper side of the front part 8 of the lower pallet. However, there is a problem that the coil-shaped metal fitting is exposed on the slope, the appearance is deteriorated, and the tip of the coil protrudes on the slope. On the other hand, if the connection fixture 14 is used, the exposure of the fixture to the slope can be minimized, so that the upper and lower stone packed baskets 1 can be connected and fixed without impairing the appearance. Further, the connection can be performed in a shorter time than the coil.

<Other embodiments>
It is preferable to reinforce the rear surface portion and the bottom surface portion of the back panel with a reinforcing member. One bent portion of the reinforcing member is hooked on the vertical bar member on the rear surface portion, and the opposite bent portion is hooked on the vertical bar member on the bottom surface portion. This makes it difficult for the back panel to be deformed against the earth pressure from the back soil, and makes the structure of the stone cradle stronger.

  Moreover, you may arrange | position the inner frame which has the same outer shape as a side panel in the cage | basket of a stone cradle. As a result, the structure of the stone candy can be made stronger.

  Further, a stone wall made by increasing the width of the front panel and the back panel and a stone wall made by reducing the width may be manufactured, and the retaining wall may be formed by combining these stone walls. In the case where the retaining wall is formed by stacking the same width of stone claws in multiple stages, the position of the side panel is the same between the upper and lower stone claws, and thus the retaining wall strength varies. On the other hand, when the retaining wall is formed by combining a plurality of stone claws having different widths, the position of the side panel differs between the upper and lower stone claws, so that the retaining wall strength can be made uniform. .

  Further, the horizontal bars constituting one wire mesh panel may not all have the same diameter. For example, the horizontal bar material corresponding to the outer frame of the wire mesh panel can be made thicker than other horizontal bar materials. In the case of the front panel, it is preferable that the three horizontal bars at the uppermost side of the front part, the boundary between the front part and the bottom part, and the last part of the bottom part are as thick as the vertical bars. That is, if 70% or more of the plurality of horizontal bars of the front panel have a diameter smaller than that of the vertical bars, the effect of the embodiment can be obtained.

  In addition, as shown in FIG. 6, a rectangular parallelepiped shaped stone claw having an open top surface can be formed by setting the angle formed by the front surface portion 8 and the bottom surface portion 9 of the front panel 22 to be a substantially right angle. Also in this case, since the front surface portion 8 and the bottom surface portion 9 of the front panel 22 are supported by the reinforcing member 13, the front surface portion 8 and the bottom surface portion 9 of the front panel 22 are filled even after the filling material is packed. The angle can be maintained. In the present embodiment, the side panel (not shown) is a rectangular wire mesh panel. After assembling the stone crabs in the same manner as in the first embodiment, the middle padding material is packed from the upper surface portion of the opened stone crabs to the top surface of the casket, and shifted to the back side from the lower stone crabs. The upper and lower stone claws are connected and fixed by the connecting and fixing bracket 15. The connecting and fixing bracket 15 is a long member, and both ends thereof are bent in a U shape to form bent portions, and the bent portions are provided so as to form a plane rotated 90 degrees relative to each other. It has been. One of the bent portions of the connecting fixture 15 is hooked on the uppermost horizontal bar 7 of the front part 8 of the lower stone claw, and the opposite bent part is the vertical bar 6 of the front part 8 of the upper stone claw. Hang on. The connecting and fixing metal fittings 15 are installed at predetermined intervals, and the filling material is also packed in the upper stage stone candy. Therefore, according to such a rectangular parallelepiped-shaped stone claw, the bottom surface of the upper stone claw and the connection fixing metal fitting 15 also serve as the upper surface of the lower stone claw, so that the weight and cost of the stone custody are lower than before. A staircase-like retaining wall can be formed.

DESCRIPTION OF SYMBOLS 1 Ishizume bowl 2 Front panel 3 Back panel 4 Side panel 6 Vertical bar material 7 Horizontal bar material 8 Front part 9 Bottom part

Claims (5)

It is made up of a plurality of wire mesh panels made of welded wire mesh, and is a stone claw that forms a slope,
The wire mesh panel includes a front panel, a back panel, and a side panel,
The front panel has a lattice shape formed by combining a horizontal bar member and a plurality of vertical bar members having a diameter larger than that of the horizontal bar member, and includes a front part that forms the slope, and an acute angle with the front part. With a bottom surface portion,
The front side of the front panel has a lattice network having a horizontally-long rectangular shape. The said horizontal bar material and said vertical bar material which the said front part of the said front panel has are the number and diameter by which the said front part of the said front panel becomes more than predetermined intensity | strength by stress analysis, It is characterized by the above-mentioned. The stone packed bowl described in 1. 3. The stone according to claim 1, wherein the front portion of the front panel has a length of a vertical side of the lattice network of 1/10 to 1/2 of a horizontal side. Clogs. 4. The stone cradle according to claim 1, wherein the bottom portion of the front panel has a larger interval between the horizontal bars adjacent to each other than the front portion. 5. The ratio of the diameter of the horizontal bar to the vertical bar of the front panel is 5: 6, 5: 8, 5: 9, 5:13, 6: 8, 6: 9, 6:13, 8: 9. 8:13, 9:13. 5. The stone-clad bowl according to any one of claims 1 to 4, wherein:

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