JP5356918B2 - Pressure receiving structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure-bearing structure which is used in a ground anchor construction method for inserting a pressure-bearing structure made of layered lattice materials into a protrusion part of an anchor bolt fixed to the ground of a slope and tightening and fixing a nut to the protruding end of the anchor bolt and in which the circumferential edges of the lattice materials are not curved upward to reduce a pressure-bonding force to the slope when a concentrated load is exerted by the tightening of the nut. <P>SOLUTION: A nut 29 is fitted in a wedge material 25, and the wedge material 25 is mounted on a piece 16. After the piece 16 is mounted to a rectangular division 14 of a lattice material 2, an intermediate piece 26 is mounted to the corresponding rectangular division 14 of a lattice material 3 overlaid on the lattice material 2, and a piece 15 is mounted on the corresponding rectangular division 14 of a lattice material 4 overlaid on the lattice material 3. A bolt 27 is turned into the nut 29 through the piece 15; the intermediate piece 26; and the wedge material 25. The wedge material 25 is pressed in the piece 16 by the turning, and the piece 16 is laterally enlarged by formed slits and press-bonded and fixed to the rectangular division 14. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a pressure receiving structure that is pressed against and fixed to a slope to prevent the slope from collapsing and landslide.

  In recent years, in order to prevent slope collapse and landslide, a precast concrete pressure plate is inserted into the protruding part of the anchor bolt fixed to the ground of the slope, and a nut is tightened to the protruding end of the anchor bolt protruding from the pressure plate. The ground anchor construction method is adopted, and the pressure receiving plate is made of fiber reinforced resin (hereinafter referred to as FRP) in order to reduce the weight, and is made into a lattice shape composed of lateral ribs and longitudinal ribs, Further, a lattice-shaped pressure receiving plate made of FRP is also known.

  The lightweight pressure plate as described above is easy to carry to the site, can be constructed without using large construction machines, and has the advantage of being easy to construct, but is made of concrete or steel. Compared with, the nut is screwed into the protruding end of the anchor bolt that protrudes from the pressure receiving plate, and when tightening, the stress is concentrated at one point even if tightened via the mounting plate. Warping, and the pressure on the slope tends to decrease.

  In order to solve the above problems, FRP pressure plates with different areas are stacked and stacked in a pyramid shape (Patent Documents 1 and 2). Reinforcing ribs that extend radially from the mounting part to be inserted are connected to the frame bracket, and the periphery of the pressure receiving plate is uniformly bent without being bent by tightening the nut screwed into the bolt protruding from the mounting part. The thing (patent document 3) etc. which were made to crimp is proposed.

JP 2000-336656 A JP 2003-129486 A JP-A-2005-207113

  The present invention inserts a pressure-receiving structure formed by stacking a grid-like lattice material in which a large number of meshes are formed by a combination of ribs into a protruding portion of an anchor bolt fixed to a ground surface, and then attaches to the protruding end of the anchor bolt. The pressure receiving structure used in the ground anchor method for tightening and fixing a nut, and when a concentrated load is applied due to tightening of the nut, the periphery of the lattice material warps upward and the pressure to the slope decreases. An object of the present invention is to provide a pressure receiving structure that does not cause the above problems.

  In the invention according to claim 1, the pressure receiving structure formed by stacking mesh lattice materials in which a number of meshes are formed by the combination of ribs is inserted into the protruding portion of the anchor bolt fixed to the ground of the slope, The pressure receiving structure used in the ground anchor method for fixing by tightening nuts to the projecting ends of the bolts, wherein the first and second are respectively fitted to the corresponding meshes of the upper lattice material and the lower lattice material. And the bolts connecting these first and second pieces, and at least one of the first and second pieces is widened in the lateral direction by tightening the bolts to constitute the mesh. The stacked lattice members are connected by a first connecting member that is fixed by crimping to the rib.

Invention according to claim 2, in the invention according to claim 1, wherein the lattice material is molded made FRP, the meshes have a draft for facilitating venting the mold during molding of the grating material, the lattice material The stacking is performed in a direction in which the mesh is sandwiched downward .
In the invention according to claim 3, the pressure receiving structure formed by stacking a net-like lattice material in which a large number of meshes are formed by a combination of ribs is inserted into the protruding portion of the anchor bolt fixed to the ground of the slope, The pressure receiving structure used in the ground anchor method for fixing by tightening nuts to the projecting ends of the bolts, wherein the first and second are respectively fitted to the corresponding meshes of the upper lattice material and the lower lattice material. And a first connecting member comprising a bolt connecting the first and second pieces, and the bolts of the connecting member are tightened to expand both the first and second pieces in the lateral direction. The ribs constituting the mesh are fixed by being crimped, and the stacked lattice members are thereby connected.

The invention according to claim 4 is the invention according to claims 1 to 3 , wherein the piece that can be widened in the lateral direction is formed with a tapered fitting hole, and a plurality of slits communicating with the fitting hole are formed around the piece, It consists of a piece body that can be widened between the slits, and a wedge material that is inserted into the fitting hole of the piece body and through which the bolt passes, and the wedge material is pushed into the fitting hole by tightening the bolt And the width of the space between the slits is widened by the wedge action.

The invention according to claim 5 is the invention according to claims 1 to 3 , wherein the piece that can be widened in the lateral direction is made of a compression material made of rubber or resin, and is compressed by tightening a bolt to bulge in the lateral direction. It is characterized by doing.

In the invention according to claim 6, after inserting the pressure receiving structure formed by stacking a grid-like lattice material in which a large number of meshes are formed by a combination of ribs into the protruding portion of the anchor bolt fixed to the ground of the slope, The pressure receiving structure used in a ground anchor method in which a nut is fastened and fixed to a projecting end of a bolt, wherein the lattice material is made of FRP and the mesh makes it easy to remove the die when forming the lattice material A draft angle for the upper grid material and the lower grid material are arranged so that the draft direction is upside down, and the first grid and the lower grid material are fitted in corresponding meshes of the upper and lower grid materials. a second frame, using a second connecting member ing than bolts for connecting the first and second frames, of the first frame and the second frame by screwing the bolt of the connecting member, One piece narrows upward A mesh with a draft angle is pushed upward, while the other piece is pushed downward into a mesh with a draft angle narrowed downward, and one and the other piece form a mesh by a wedge action, respectively. The stacked lattice members are connected by being pressed and fixed to the ribs .

The invention according to claim 7 is the invention according to any one of claims 1 to 6 , wherein an intermediate mesh-like lattice material between the upper lattice material and the lower lattice material has a corresponding mesh. An intermediate piece through which the bolt is passed is fitted.

In the invention according to claim 8 , the pressure receiving structure formed by stacking mesh-like lattice materials in which a large number of meshes are formed by combining ribs is inserted into the protruding portion of the anchor bolt fixed to the ground of the slope, and then anchored. The pressure receiving structure used in the ground anchor method for fixing by tightening a nut to the projecting end of a bolt, wherein the compressive deformable rubber is passed over a plurality of lattice members in a corresponding mesh of the stacked lattice members, or A resin-made third piece, a bolt passed through the piece, and a nut screwed into the protruding end of the bolt passed through the piece are screwed in. A plurality of lattice members stacked together are connected by a third connecting member that is compressed and bulges in the lateral direction and is fixed by being crimped to ribs constituting the meshes of the plurality of lattice members.

In the invention according to claim 9 , the pressure receiving structure formed by stacking a mesh-like lattice material in which a number of meshes are formed by a combination of ribs is inserted into the protruding portion of the anchor bolt fixed to the ground of the slope, and then anchored. The pressure receiving structure used in a ground anchor method in which a nut is fastened and fixed to a projecting end of a bolt, wherein the lattice material is made of FRP and the mesh makes it easy to remove the die when forming the lattice material The grid material adjacent to the upper and lower sides of “F” is fitted to the corresponding mesh, and a concave portion is fitted to one of the upper and lower surfaces, and the concave portion is fitted to the other. A fourth connecting member made of a fourth piece provided with a convex portion is fitted so that the concave and convex portions are closely fitted to each other, and adjacent upper and lower lattice members are connected.

According to the inventions according to claims 1 and 3 , the lattice material is lightweight, the plant can be vegetated through the mesh, the pressure receiving area and the drawing force can be adjusted by changing the size and the number of the lattice materials, the lightweight Therefore, it is easy to carry in, and it is not necessary to use a large construction machine, the workability is good, the upper lattice material and the lower lattice material are connected by the first connecting member, and are not displaced from each other. When tightening the pressure receiving structure, it is possible to prevent the peripheral edge from warping upward even if a concentrated load is applied by tightening the nut, and to prevent the pressure from being pressed against the slope due to warping. Play.

  In the present invention, the upper lattice material refers to an upper lattice material, and the lower lattice material refers to a lower lattice material. Therefore, the upper lattice material and the lower lattice material include those vertically adjacent and those vertically positioned with another lattice material interposed therebetween. The same applies to the following inventions.

  According to the second aspect of the present invention, using the draft formed in the mesh, the piece fitted to the mesh is fixed by being crimped to the rib constituting the mesh by the wedge action by tightening the bolt. Therefore, one of the pieces to be fitted into the corresponding meshes of the upper lattice material and the lower lattice material can be made of a rigid body that is not widened in the lateral direction.

When the piece is configured as in the inventions according to the fourth and fifth aspects, the piece is widened in the lateral direction by tightening the bolt and can be fixed by being crimped to the ribs constituting the mesh.
According to the invention concerning Claim 6, there exists an effect similar to the invention concerning Claim 1. Note that any of the pieces fitted to the corresponding meshes of the upper lattice material and the lower lattice material can be made of a rigid body that does not widen in the lateral direction.

According to the seventh aspect of the invention, not only the upper lattice material and the lower lattice material but also the lattice material therebetween can be integrated so that the peripheral edge is not warped.
According to the inventions according to claims 8 and 9 , the stacked lattice members are connected by the third or fourth connecting member, and, similarly to the invention according to claim 1, they can be prevented from shifting from each other. , Warping of the peripheral edge can be prevented.

The inventions according to claims 1, 3 , 6 , 8, and 9 all have special technical features in which stacked net-like lattice members are connected by connecting members at the mesh, and the unity of the invention is achieved. It is what you have.

  A pressure receiving structure 1 shown in FIG. 1 is disclosed in Patent Document 1 and shows a pressure receiving structure targeted by the present invention. The pressure receiving structure 1 includes several mesh-like lattice members 2 having different areas, 3 and 4 are stacked and stacked in a pyramid shape, and each lattice material 2, 3, 4 is integrally formed by FRP, forming a lattice shape composed of longitudinal ribs and lateral ribs, A rectangular mesh, which is a mesh, is formed vertically and horizontally, and has an opening lacking longitudinal ribs and lateral ribs in the center, and anchor bolts described later are passed through the openings. It has become so. Each mesh formed by the vertical ribs and the horizontal ribs has a draft angle so that the mold can be easily pulled out during molding.

  At the time of fixing, as shown in FIG. 2, the anchor bolt 7 is inserted and fixed in a hole made in the ground 6 of the slope as usual, and the grid materials 2, 3, 4 are provided in the projecting portions. After aligning the cells in order from the largest, insert the opening in the center without the longitudinal rib and the lateral rib, insert the presser plate 8, and screw the cap nut 9 into the bolt protruding end. The pressure receiving structure 1 is fastened with and fixed to the slope.

  FIG. 3 shows a pressure receiving structure according to the present invention in which four lattice members 2, 3, 4, and 5 having different areas formed in a rectangular mesh are stacked and stacked in the same manner as the pressure receiving structure 1 shown in FIG. FIG. 4 shows a cross section taken along the line AA of FIG. 3, and the stacked lattice members 2, 3, 4, 5 are connected by a first connecting member as shown in FIG. .

  The first connecting member is fitted from above to the grids 14 of the grid members 2, 3, 4, and 5 having a draft for making it easy to pull the mold upward during molding, and is substantially the same as the draft of the grid 14. The first piece 15 and the second piece 16 having a gradient, bolts 17, 27, and 28 that connect both the pieces 15 and 16, and a nut 29 are included. Each piece 15 and 16 will be described in detail in the following order.

  As shown in FIG. 5, the first piece 15 has a square block shape made of a hard resin, preferably a steel rigid body, having chamfered corners and a through hole 18 through which bolts 17, 27, 28 are passed in the center. Have.

As shown in FIG. 6, the second piece 16 is similarly chamfered at four corners to form a fitting hole 19 having a substantially quadrangular pyramid shape at the center, and communicates with the fitting holes 19 at the chamfered portions of the four corners. a square block-shaped frame body 22 forming the slit 21, form a 截 head quadrangular pyramid form having the same or substantially the same slope and slope of the fitting hole 19, is capable of fitting into the fitting hole 19 , A recess 23 in which a nut 29 is fitted in the center, and a wedge material 25 in which a through hole 24 of bolts 17, 27, 28 communicating with the recess 23 is formed in the center. Both are made of a hard resin, preferably a steel rigid body, as in the first piece 15.

  When the lattice members 2 and 3 are connected by the first connecting member, the second piece 16 is formed by loading the wedge material 25 having the nut 29 fitted into the recess 23 into the fitting hole 19 of the piece body 22. Is mounted on the grid 14 of the grid material 2 in FIG. 4 corresponding to the lower grid material, and the first piece 15 is put on the corresponding grid 14 of the grid material 3 which is the upper grid material superimposed on the grid material 2. Wear each one.

  Next, the bolt 17 is passed through the through hole 18 of the first piece 15 and the through hole 24 of the wedge member 25 of the second piece 16 and screwed into the nut 29. The first piece 15 is pushed down while being prevented from rotating and pushed into the fitting hole 19. When the former wedge material 25 is pushed in, the piece main body 22 slides up the mesh 14, but due to the draft angle of the mesh 14, the upper end of the mesh is wider than the lower end, As shown in the figure, a step is generated at the joint of the ribs of the ribs 22 so that the piece main body 22 is caught on the edge of the ribs of the lattice material 3 adjacent on the upper side, and further sliding is prevented. When the wedge member 25 is further pushed in this state, the piece main body 22 is widened between the slits so as to be surrounded by four sides, and is fixed by being crimped to the ribs constituting the mesh 14. On the other hand, the latter first piece 15 is pushed downward into the mesh 14 having a draft and is fixed to the mesh 14 by a wedge action.

  When connecting the lattice members 2, 3, and 4, the grid 14 of the lattice member 2 corresponding to the lower lattice member is used for the second piece 16 loaded with the wedge member 25 fitted with the nut 29 as described above. The intermediate piece 26 is placed on the corresponding mesh 14 of the grid material 3 stacked on the upper side, and the first piece 15 is placed on the grid 14 of the grid material 4 corresponding to the upper grid material stacked thereon. Then, the bolt 27 is passed through the wedge members 25 of the first piece 15, the intermediate piece 26 and the second piece 16 and screwed into the nut 29. As a result, similarly to the above, the piece main body 22 is widened to the four sides between the slits and is fixed by being crimped to the ribs constituting the grid 14 of the grid material 2, and the first piece 15 is pushed into the grid 14 of the grid material 4. It is fixed by the wedge action. The intermediate piece 26 attached to the mesh 14 of the intermediate lattice material 3 remains attached to the mesh 14 and is not fixed by being crimped to the mesh 14, but functions to regulate the displacement of the lattice material 3. .

  The intermediate piece 26 described above has the same structure as the first piece 15 shown in FIG. Therefore, the first piece 15 may be used as it is as the intermediate piece, but when used separately from the first piece 15, the intermediate piece 26 also constitutes the first connecting member.

  When the lattice members 2, 3, 4, 5 are connected, the second piece 16 is connected to the grid of the lattice member 2 corresponding to the lower lattice member, and the lattice member corresponding to the upper lattice member, as described above. The first piece 15 is attached to the corresponding square 14 of 5 and the intermediate piece 26 is attached to the corresponding square 14 of the intermediate lattice members 3 and 4, respectively, and then the bolt 28 is attached to the first piece 15, the intermediate piece 26 and the second piece. Pass through the wedge material 25 of the second piece 16 and screw into the nut 29. As a result, similarly to the above, the piece main body 22 is pressed and fixed to the grid 14 of the lattice material 2, and the first piece 15 is pushed into the grid 14 of the lattice material 5 and fixed by the wedge action. The intermediate piece 26 loaded in each cell 14 of the lattice materials 3 and 4 regulates the displacement of the lattice materials 3 and 4.

  According to the pressure-receiving structure of the present embodiment, each lattice material is excellent in corrosion resistance due to FRP, is lightweight and high in strength, is lighter because it is lattice-like, and plants can be vegetated through the meshes, It is possible to adjust the pressure receiving area and the pulling force by changing the size and number of the lattice materials, it is easy to carry in because it is lightweight, and it is not necessary to use a large construction machine, the workability is good, and the lattice materials 2, 3 4 and 5 are inserted into the anchor bolt 7 and stacked, and when the cap nut 9 is screwed and tightened, the lattice materials 2, 3, 4, and 5 are simply stacked and are not integrated. The surface of each lattice material is rubbed by the screw nut 9 being screwed in, and the surface is rubbed and a rubbing sound is generated. However, the lattice materials 2, 3, 4, 5 are integrated and rotate relative to each other. Does not occur, so it does not produce the above-mentioned rubbing noise. In addition, it is possible to install the piece by placing the pieces on the required grid of the lattice material at the time of construction, stacking the lattice material, and finally screwing and tightening through the bolt, the workability is good and the construction time can be shortened, The lattice members 2, 3, 4, and 5 are connected by the first connecting member, whereby the lattice members 2, 3, 4, and 5 are integrated, and the bending rigidity of the pressure receiving structure 11 is increased. The warping of the pressure receiving structure 11 when the nut 9 is screwed and fastened is restricted, and it is possible to prevent a decrease in the pressure-bonding force to the slope due to the warp.

  In the embodiment, the first piece 15 mounted on the grid 14 of the grid materials 3, 4, and 5 corresponding to the upper grid material is pushed into the grid 14 by screwing the bolts 17, 27, and 28. The second piece 16 mounted on the grid 14 of the grid material 2 corresponding to the lower grid material is fixed to the grid 14 of the grid material 3, 4 or 5 by the wedge action. Similarly, it may be configured by a piece body and a wedge material, and the wedge material may be pushed in by screwing in bolts 17, 27, and 28 to widen the piece body and be crimped to the mesh 14. In this case, even if the grid 14 of each of the grid members 2, 3, 4, 5 does not have a draft, the piece is fixed by being crimped to the grid 14 of each of the grid materials 2, 3, 4, 5 Is possible. Therefore, the longitudinal ribs and the lateral ribs constituting the lattice members 2, 3, 4, and 5 can be formed of the same thickness, for example, a narrow steel plate.

  In the above embodiment, the bolts 17, 27, and 28 are screwed into the nut 29 fitted in the recess 23 of the wedge member 25, but are directly screwed into the wedge member 25. May be tightened. In this case, the nut 29 can be omitted. Since the wedge member 25 has a rectangular shape with a chamfered corner, the wedge member 25 is prevented from rotating in the fitting hole 19 of the piece body 22.

  In the above embodiment, the intermediate piece 26 is used between the first piece 15 and the second piece 16, but the lattice members 2, 3, 4, 5 are fixed without using the intermediate piece 26. You can also FIG. 7 shows an example. The lattice material 2 and the lattice material 3, the lattice material 3 and the lattice material 4, and the lattice material 4 and the lattice material 5 are the first piece 15, the second piece 16, and the bolt 17, respectively. Are connected to each other and the adjacent lattice members are connected in the vertical direction.

FIG. 8 shows a part of a pressure receiving structure in which four stacked lattice members 2, 3, 4 and 5 are connected by a second connecting member.
Here, the second connecting member includes the first piece 15, the second piece 16, the intermediate piece 26, the bolts 17, 27, and 28, and the nut 29 that constitute the first connecting member. It consists of the piece 15 and the intermediate piece 26, the bolts 17, 26, 27 and the nut 29, and the second piece 16 is omitted.

  When the grid members 2, 3, 4, and 5 are connected by the second connecting member, the draft of the pressure-receiving structure 11 shown in FIG. 4 is obtained by turning the grid member 2 corresponding to the lower lattice member upside down. The first piece 15 is attached to the mesh 14 from the lower side of the figure so as to be opposite to that of the material 2, and the corresponding mesh 14 of the lattice materials 3, 4, 5 is respectively subjected to the pressure receiving shown in FIG. Similar to the structure 11, the first piece 15 is mounted alone, or the first piece 15 and the intermediate piece 26 are mounted.

  Next, the bolts 17, 27, and 28 are passed through the upper and lower first pieces 15, the upper and lower first pieces 15 and the intermediate piece 26 therebetween, and the upper and lower first pieces 15 and the pair of intermediate pieces 26 therebetween. Then, the nut 29 is screwed and fastened. The first piece 15 mounted on the grid 14 of the grid material 2 corresponding to the lower grid material is screwed up by the bolts 17, 27, and 28 and is fixed by the wedge action. The first piece 15 mounted on the grid 14 of the grid material 3, 4 or 5 corresponding to the grid material is pushed down by the grid 14 and fixed by the wedge action.

According to the pressure receiving structure of the present embodiment, the lattice members can be connected using the same piece 15 only by reversing the vertical direction of the lower lattice member 2.
In the above-described embodiment, the first piece 15 mounted on the grid 14 of the lattice material 2 corresponding to the lower lattice material is a rigid body, and even if a compression force is applied by applying pressure from above and below, it bulges in the lateral direction. However, in another embodiment, at least the lower lattice member of the pieces 15 mounted on the upper and lower lattice members 14 is not fixed. The second piece 16 mounted on the second mesh 14 is formed of a material that can be deformed by compression, for example, hard rubber.

  According to this embodiment, when the bolts 17, 27, 28 are screwed into the nuts 29, at least the lower grid material 2 of the lower grid material 2 and the upper grid materials 3, 4, 5. The first piece 15 attached to 14 is compressed and swells in the lateral direction, and is fixed by being crimped to the rib constituting the mesh 14.

FIG. 9 shows an example in which upper and lower adjacent lattice members are connected by a third connecting member.
Here, the third connecting member is inserted into the corresponding grid of the lattice material adjacent to the upper and lower sides, the third piece 31 made of compression-deformable hard rubber or resin, and the third piece 31 through the presser plate 32. And a nut 34 screwed into the projecting end of a bolt 37 projecting from the third piece 31. The nut 34 has a function of pressing the third piece 31 and a detent of the nut 34. When the presser plate 35 having the above function is integrally fixed and the bolt 33 is screwed in, the third piece 31 between the presser plates 32 and 35 is compressed and bulges in the lateral direction, and the grids of the upper and lower lattice members 14 is fixed by crimping.

  The connecting member of the illustrated embodiment connects the lattice materials adjacent in the vertical direction, but the third piece 31 is elongated and passed through the mesh 14 so as to straddle the three or more lattice materials stacked. By doing so, it is also possible to connect three or more lattice members.

FIG. 10 shows a part of the pressure receiving structure in which the four stacked lattice members 2, 3, 4, and 5 are connected by a fourth piece 37 that is a fourth connecting member.
Here, as shown in FIG. 11, the fourth piece 37 is formed of a hard resin, preferably a rectangular block made of a rigid body having a concave portion 38 formed on the lower surface and a convex portion 39 configured to fit into the concave portion 38 on the upper surface. It has a form.

  When assembling the pressure receiving structure with each of the grid members 2, 3, 4, 5, after mounting the fourth piece 37 on the required grid 14 of the grid material 2, the grid material 3 is placed on the grid material 2. The pieces 37 are mounted on the grids 14 on the respective pieces 37 so that the convex portions 39 are fitted into the concave portions 38. Next, the grid material 4 is overlapped on the grid material 3 with the grids 14 aligned, and then the pieces 37 are mounted on the grids 14 of the grid material 4 in the same manner. The same applies to the lattice material 5.

The 4th piece 37 which constitutes the 4th connecting member of this embodiment is inserted in the mesh corresponding to the lattice material adjacent to the upper and lower sides of the lattice material piled up in the direction where the mesh is pinched downward, and the upper and lower pieces 37 are connected by fitting the concave and convex portions. For this reason, the displacement of the respective lattice members 2, 3, 4, and 5 is restricted, and the warpage at the peripheral portion is suppressed.
According to the pressure receiving structure of this embodiment, each grid member is connected without the need for bolts as shown in the above-described embodiment, only by loading the piece 37 with the concavo-convex portion fitted to the mesh 14. can do.

  In the lattice materials 2, 3, 4, and 5 in each of the above embodiments, the cells 14 are all rectangular and have the same size, but the shape and size of the cells differ depending on the lattice materials 2, 3, 4, and 5. May be. In this case, the first piece 15 and the second piece 16 used for the first connecting member, and the intermediate piece 26 have shapes and sizes corresponding to the squares. The same applies to the second connecting member. In this case, not only the first piece 15 but also the second piece 16 having a shape or size different from that of the first piece 15 is used in the upper and lower sides. In the third connecting member, the top and bottom of the piece 31 mounted across the grids of the upper and lower grid members are formed in a shape and size suitable for the grids of the respective grid members. In the fourth connecting member, each piece 37 is formed corresponding to the shape and size of the mesh.

  The lattice members 2, 3, 4, 5 of each of the above embodiments also have a lattice shape composed of longitudinal ribs and lateral ribs, and the mesh is a rectangular mesh 14, but the mesh is not rectangular. It may have a form.

  The lattice members 41 and 47 shown in FIG. 12 and FIG. 13 show an example, and the lattice member 41 is positioned at the outer rectangular outer frame 42 and the center of the outer frame 42 and is inserted into the anchor bolt. An opening 43, a rib 44 that is formed radially from the opening 43 and connected to the frame 42, and is arranged between the outer frame 42 and the opening 43 in descending order of size. The ribs 44 and 45 form a trapezoidal mesh 46, and the mesh 46 gradually decreases in size from the outer frame 42 toward the opening 43.

  The lattice material 47 has the outer frame 42 in the lattice material 41 of the embodiment as a circular outer frame 48, and the rib 44 connects the opening 43 and the outer frame 48, and the outermost rib among the rectangular ribs 45. 45 and a rib parallel to the side constituting the rectangular rib 45 are provided integrally with the rib 44 on the outer frame 48 side.

  In the lattice members 41 and 47 of the embodiment shown in the figure, the ribs 44 have different thicknesses. However, the ribs 44 may be formed to have a uniform thickness, or for reinforcement with a large thickness. The form which arrange | positioned the rib at equal intervals in the circumferential direction may be comprised.

In the lattice members 41 and 47 of each of the above embodiments, the ribs 45 are rectangular. However, the ribs 45 may be circularly arranged concentrically around the opening 43 and integrally connected to the ribs 44.
At the time of construction, as described above, the lattice members 41 and 47 having different areas are stacked in order from the one having the largest area, and are connected using the first to fourth connecting members, but are used for each connecting member. Different pieces are used depending on the shape and size of the mesh 46. For example, in the lattice members 41 and 47 shown in FIGS. 12 and 13, trapezoidal pieces are used, and when the ribs 45 are circular and arranged concentrically around the opening 43, arc-shaped pieces are used. The rectangular or arc-shaped pieces are reduced in size toward the opening 43, and similar ones are used.

  Also in the embodiment, the lattice members 41 and 47 to be stacked may have different mesh shapes and sizes in the upper and lower sides. In this case, as described above, pieces having different shapes and sizes between the upper and lower lattice members 41 and 47 are used.

The perspective view of the prior art example of a pressure receiving structure. Sectional drawing which shows the construction example of the pressure receiving structure shown in FIG. The top view of the pressure receiving structure concerning this invention. The expanded sectional view in the AA line of FIG. The perspective view of the piece which comprises the 1st connection member. The perspective view of the piece mounted | worn with the grid of the lattice material located in the low order. Sectional drawing of another connection method of the lattice material by a 1st connection member. Sectional drawing of the principal part of the pressure receiving structure which connected the grid | lattice material with the 2nd connection member. Sectional drawing of the principal part of the pressure receiving structure which connected the grid | lattice material with the 3rd connection member. Sectional drawing of the principal part of the pressure receiving structure which connected the grid | lattice material with the 4th connection member. The perspective view of the piece which comprises the 4th connection member. The perspective view which shows another example of a grating | lattice material. The perspective view which shows another example of a grating | lattice material.

1, 11 .. Pressure receiving structure 2, 3, 4, 5, 41, 47 .. Grid material 6. Ground 7. Anchor bolt 8. Holding plate 9. Cap nut 14. 1 piece 16 .. second pieces 17, 27, 28, 33... Bolts 18 and 24 .. through hole 19 .. fitting hole 21 .. slit 22 .. piece body 23 .. recess 25 .. Wedge 26 ·· Intermediate pieces 29 and 34 · Nut 31 · · Third piece 32 and 35 · · Presser plate 37 · · Fourth piece 38 · · Concavity 39 · · Convex portions 42 and 48 · · Outer frame 43..Openings 44, 45..Rib 46..Mesh

Claims (9)

After inserting the pressure-receiving structure, which is a stack of mesh-like lattice materials in which many meshes are formed by the combination of ribs, into the protruding part of the anchor bolt fixed to the ground of the slope, tighten the nut on the protruding end of the anchor bolt The pressure receiving structure used in the ground anchor method of fixing at the first and second pieces respectively fitted to the corresponding meshes of the upper lattice material and the lower lattice material, and the first and second pieces using the first connecting member ing than bolts for connecting the second piece, one of the first and second frames by fastening bolts of the connecting member, one piece is widened in the transverse direction, the mesh while being fixed by crimping the rib constituting a rare other piece is pushed downward in a network having a draft angle narrowed downward, it is fixed by crimping to the rib by wedge action, thereby stacking Receiving structure formed by connecting the lattice material. The grid material is molded made FRP, claim wherein the meshes have a draft for facilitating venting the mold during molding of the grating material, stacking of the lattice material is performed in the direction in which the mesh is caught downward The pressure receiving structure according to 1. After inserting the pressure-receiving structure, which is a stack of mesh-like lattice materials in which many meshes are formed by the combination of ribs, into the protruding part of the anchor bolt fixed to the ground of the slope, tighten the nut on the protruding end of the anchor bolt The pressure receiving structure used in the ground anchor method of fixing at the first and second pieces respectively fitted to the corresponding meshes of the upper lattice material and the lower lattice material, and the first and second pieces A first connecting member comprising a bolt for connecting the second piece is used, and both the first and second pieces are laterally widened by tightening the bolt of the connecting member, and the rib constituting the mesh A pressure-receiving structure that is fixed by crimping and connecting stacked lattice materials. The piece that can be widened in the lateral direction has a tapered fitting hole, and a plurality of slits leading to the fitting hole are formed around the piece, and a piece body that can be widened widen between the slits, and the fitting of the piece body fitted in Goana, and the bolt is made of wedge member being passed, the wedge member is pushed into the fitting hole by tightening the bolt, to the claims 1 to widening laterally between the slits in the wedging action The pressure receiving structure according to claim 3 . The pressure receiving structure according to any one of claims 1 to 3, wherein the piece that can be widened in the lateral direction is made of a compression material made of rubber or resin, and is compressed by tightening a bolt to bulge in the lateral direction. . After inserting the pressure-receiving structure, which is a stack of mesh-like lattice materials in which many meshes are formed by the combination of ribs, into the protruding part of the anchor bolt fixed to the ground of the slope, tighten the nut on the protruding end of the anchor bolt The pressure receiving structure used in the ground anchor method of fixing in, wherein the lattice material is made of FRP, and the mesh has a draft angle for facilitating removal of the die when forming the lattice material, The upper lattice material and the lower lattice material are arranged so that the direction of the draft is upside down, and the first and second pieces fitted in the corresponding meshes of the upper and lower lattice materials, Using a second connecting member comprising a bolt connecting the first and second pieces, one of the first piece and the second piece is narrowed upward by screwing in the bolt of the connecting member. Mesh with draft The other piece is pushed downward into a mesh having a draft angle narrowed downward, and the one piece and the other piece are respectively pressed against ribs forming the mesh by a wedge action. A pressure-receiving structure formed by connecting fixed lattice materials that are fixed . The lattice material intermediate network between the upper grid members and lower grid members, any of claims 1 to 6 intermediate piece in which the bolt is passed through the corresponding mesh is fitted the pressure receiving structure according to.
  After inserting the pressure-receiving structure, which is a stack of mesh-like lattice materials in which many meshes are formed by the combination of ribs, into the protruding part of the anchor bolt fixed to the ground of the slope, tighten the nut on the protruding end of the anchor bolt The pressure receiving structure used in the ground anchor method of fixing with a third piece made of compression-deformable rubber or resin that is passed over a plurality of lattice members in the corresponding meshes of the stacked lattice members A bolt that is passed through the piece and a nut that is rotationally stopped and screwed into a protruding end of the bolt that is passed through the piece. The piece is compressed by the bolt and is expanded in the lateral direction. A pressure receiving structure formed by connecting a plurality of lattice members stacked by a third connecting member fixed by being crimped to ribs constituting each mesh of the plurality of lattice members. After inserting the pressure-receiving structure, which is a stack of mesh-like lattice materials in which many meshes are formed by the combination of ribs, into the protruding part of the anchor bolt fixed to the ground of the slope, tighten the nut on the protruding end of the anchor bolt The pressure receiving structure used in the ground anchor method of fixing in, wherein the lattice material is made of FRP, and the mesh has a draft angle for facilitating removal of the die when forming the lattice material, The lattice material adjacent to the upper and lower sides of the lattice material stacked in a direction in which the mesh is sandwiched downward is fitted to the corresponding mesh, and the upper and lower surfaces are fitted with recesses on one side and the recesses on the other side. A pressure receiving structure formed by fitting a fourth connecting member made of a fourth piece having a convex portion so that the concave and convex portions are closely fitted to each other and connecting adjacent upper and lower lattice members.