JP5232530B2 - Small mouth mold - Google Patents

Description

  The present invention relates to a retaining frame for a retaining wall constructed by laminating a honeycomb structure filled with a filler on a honeycomb-shaped three-dimensional reinforcing material having a honeycomb structure made of a strip material made of a plate-like or net-like polymer material.

  A honeycomb-shaped three-dimensional reinforcing material having a honeycomb structure made of a strip material made of plate-like or net-like polymer material has been known, and a honeycomb structure in which this honeycomb-shaped three-dimensional reinforcing material is filled with a filler such as earth and sand or crushed stone. (Hereinafter, a structure in which a honeycomb three-dimensional reinforcing material is filled with a filler is referred to as a "honeycomb structure") Used for ground reinforcement, road base material, sidewalk foundation material, temporary road, retaining wall material (Patent Document 1).

  Further, a structure in which honeycomb structures are stacked to a certain height and used as a retaining wall (hereinafter referred to as “honeycomb retaining wall”) is also well known (“Patent Documents 2 to 4”, “Non-Patent Document 1”). "Page 119"). With respect to the lower honeycomb structure, the honeycomb structure placed on the lower structure is moved backward toward the natural mountain side of the lower portion, so that the honeycomb structure can be formed in a step shape to form a stepped honeycomb retaining wall. At that time, the slope of the honeycomb retaining wall to be constructed can be adjusted by adjusting the receding width.

  When the honeycomb retaining wall was constructed, if the slope of the honeycomb retaining wall did not match the slope of the natural ground, a “displacement” occurred between the small portion of the honeycomb retaining wall and the natural ground. Since the slope of the honeycomb retaining wall is generally steeper than the slope of the natural ground, the filler may collapse or erode from the edge of the honeycomb retaining wall.

  Conventionally, in order to solve the collapse and erosion of the filler from the small part of the honeycomb retaining wall, a method of constructing a small stopper with a concrete structure or stacking vegetation clay and fixing with anchor pins or the like has been used. It was. However, the former method using a concrete structure is time-consuming and has been a hindrance to the construction of a honeycomb retaining wall that is easy to construct. In addition, the latter method using vegetation soil is not sufficient as a measure against landslides and erosion, and the rows of vegetation soil arranged so as to border the honeycomb retaining wall also have a drawback in that they are not good in appearance.

Japanese Patent No. 2825897 Utility Model No. 2582267 JP 2008-75389 A JP 2008-82093 A "Basic Engineering, December 1996" 119 pages

  The present invention relates to a honeycomb retaining wall constructed by horizontally laminating a honeycomb structure filled with a filler such as earth and sand or crushed stone on a honeycomb-shaped three-dimensional reinforcing material having a honeycomb structure made of a plate-like or net-like polymer material. It is an object of the present invention to provide a fore-edge mold used for preventing collapse and erosion of a filler from a part and a construction method thereof.

The present invention has been made to solve this problem, and the invention according to claim 1
A method for constructing a small portion of a honeycomb retaining wall, in which a honeycomb structure in which a filler is filled in a honeycomb-like three-dimensional reinforcing material having a honeycomb structure made of a plate-like or net-like polymer material is laminated horizontally,
Before installing the honeycomb structure of the lowermost layer (first layer) of the honeycomb retaining wall,
An L-shaped fore-end mold that consists of a wall surface and a bottom surface is installed at a position that becomes an edge of the honeycomb retaining wall,
Laminating one or more layers of the honeycomb structure so that the first layer of the honeycomb structure is placed on the bottom portion of the installed small form mold,
Further, the step of installing the forelock mold on the honeycomb structure and laminating one or more layers of the honeycomb structure on the bottom surface of the installed forehead mold is repeated. Build a small part,
This is a method for constructing a small-sized portion of a honeycomb retaining wall .

The invention according to claim 2
The pawl formwork is
The bottom portion and the wall portion is formed from a grid,
A crank portion having a skilled wall surface grid folding Re bends cranked so that the shape of the vertical axis upper end portion is parallel to the folding Re bending further equivalent wall surface once retaining wall side,
Is linked small hush formwork consisting of the upper portion of the insertion portion than those said crank portion,
The method for constructing a fore edge portion of a honeycomb retaining wall according to claim 1.

The invention described in claim 3
The connection type mouthpiece formwork is
A wall surface horizontal shaft member closest to a joint portion between the wall surface portion and the bottom surface portion;
Between the closest bottom portion abscissa material coupling portion between those wall surface and those bottom surface portion,
It is a connection type small-stop mold frame provided with a receiving part for inserting the insertion part ,
A method for constructing a fore edge portion of a honeycomb retaining wall according to claim 2.

The invention according to claim 4
A step of laminating one or more layers of the honeycomb structure up to the height of the crank portion of the connection type forelock mold when laminating the honeycomb structure on the bottom part of the connection type forelock mold ;
When installing the upper joint type small stopper mold on the honeycomb structure, the lower part of the connected small joint mold is installed on the upper part of the connected small joint mold. step of placing the write Murrell so insert the receiving portion of the hush mold, a small part construction method of a honeycomb retaining wall according to claim 3 further comprising a city.

  By using the small edge form according to the present invention, the collapse and erosion of the filler from the small edge portion of the honeycomb retaining wall can be easily prevented, and a highly stable honeycomb retaining wall can be constructed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of the honeycomb-shaped three-dimensional reinforcing material 1 before expansion. The honeycomb three-dimensional reinforcing material 1 is obtained by bonding a plurality of high-density polyethylene strip materials 2 at bonding sites 4 at regular intervals. The honeycomb-shaped three-dimensional reinforcing material 1 is stretched in the stretching direction 5 to form a honeycomb-shaped cell structure.

  The strip material of the honeycomb-shaped three-dimensional reinforcing material 1 is preferably provided with holes 3 in order to improve drainage. The hole may have any size or shape, but a circular shape having a size of about 1 cm is particularly preferable. Furthermore, it is better that the number of holes is large, but if the number is too large, the strength of the strip material is lowered, so that the number should not exceed 40% of the strip material area. Further, the holes may be arranged in series or in a staggered manner.

  FIG. 2 is a perspective view of the honeycomb-shaped three-dimensional reinforcing material 1 before the expansion of the honeycomb-shaped three-dimensional reinforcing material having a plurality of holes in the strip material excluding the slope portion strip material 6 which is a portion forming the slope. When forming a sloped part by filling a honeycomb-shaped three-dimensional reinforcing material with a filler having a particle size smaller than the diameter of the holes in the strip material, in order to prevent spilling from the sloped part, the honeycomb part without pores in the sloped part strip material Three-dimensional reinforcing material is used. However, if measures are taken to prevent spillage, such as applying a nonwoven fabric to the cells inside the slope strip material, the slope portion can be formed using a honeycomb-shaped three-dimensional reinforcing material having holes in the slope strip material. For drainage, it is better to have a hole in the slope strip material.

  FIG. 3 is a perspective view when a honeycomb-shaped three-dimensional reinforcing material having holes is stretched in the strip material excluding the slope portion strip material 6 shown in FIG. When the honeycomb-shaped three-dimensional reinforcing material 1 is stretched, honeycomb-shaped cells 7 are formed. By filling the cells 7 with a filler 8 such as earth and sand or crushed stone and compacting, a rigid honeycomb structure is formed.

  FIG. 4 is a perspective view of a honeycomb retaining wall in which the honeycomb structures 9 are stacked. A honeycomb retaining wall is formed by stacking and constructing the honeycomb structure 9 of FIG. Each time the honeycomb structure is stacked, a step is formed by retreating each layer toward the back ground portion 10, and honeycomb retaining walls having various slopes can be constructed according to the degree of retreat.

  The honeycomb retaining wall 9 is often constructed in front of the natural ground cut surface, but a small edge portion 12 is inevitably formed due to a gradient difference from the side natural ground portion 11. The fore edge portion 12 is a portion of the honeycomb retaining wall that does not function as a cell in the honeycomb three-dimensional reinforcing material, and thus causes collapse or erosion of the filler.

  The present invention is a small installation installed in a small end portion of a honeycomb retaining wall constructed by horizontally laminating a honeycomb structure filled with a filler in a honeycomb-shaped three-dimensional reinforcing material having a honeycomb structure made of a plate-like or net-like polymer material. A mouthpiece mold, an L-shaped mouthpiece mold comprising a wall surface portion and a bottom surface portion.

  FIGS. 5, 6, and 9 are perspective views showing an example of a small edge mold used for the small edge portion of the honeycomb retaining wall of the present invention. FIG. 5 shows an expanded metal-like small-mouth mold. FIG. 6 shows a small-mouth mold with a large number of holes in a flat plate. FIG. 9 shows a connection type fore-end mold that is lattice-like and can be connected vertically.

  The fore-edge mold 13 has an L-shaped structure including a wall surface portion 14 and a bottom surface portion 15. The wall surface part 14 is a part which comprises the wall surface of a fore edge part. The bottom surface portion 15 is installed on the foundation ground in the lowermost stage, and is installed on the top end portion of the honeycomb structure in the other cases. 13 is fixed. It is preferable that a fixing tool such as an anchor pin is used for the bottom surface 15 of the small-stop mold 13 so that the small-cap mold is not moved during construction.

  The angle formed between the wall surface portion and the bottom surface portion of the small-stop mold is set to be 45 ° or more and 90 ° or less. A smaller angle is more stable, but is generally about 90 °. Moreover, if it is larger than 90 °, a stable honeycomb retaining wall cannot be constructed.

  It is desirable that the small-mouth stop mold has a function for draining water from the inside of the honeycomb retaining wall to the outside of the wall. Specifically, the drainage function includes an expanded metal shape as shown in FIG. 5, a shape in which a flat plate as shown in FIG. 6 is provided with many holes, and a lattice shape as shown in FIG. If the function for drainage is not provided, water such as rain water or side water may accumulate in the honeycomb retaining wall, which may reduce the stability of the honeycomb retaining wall.

  However, in order to improve the function for drainage, if a lot of holes or the like are provided in the small formwork formwork, spillage may occur when using earth and sand containing fine particles in the filler. In order to prevent this, an anti-sucking material may be attached to the honeycomb retaining wall side of the wall surface portion of the mouthpiece mold. The suction preventing material is a resin sheet or a nonwoven fabric having holes in a mesh shape. The hole diameter of the evacuation preventive material needs to be finer than the mesh or the hole of the mouthpiece formwork. If the wall surface is to be greened, a vegetation mat in which plant seeds are embedded in a non-woven fabric or the like may be used as the sucking prevention material. If the filler is larger than the mesh or hole of the small formwork mold such as crushed stone, there is no need to install the anti-suction material.

  The pawl form of the present invention can be made of any material, but is preferably plastic or metal. Examples of the plastic that can be used include, but are not limited to, polyethylene and polypropylene. In the case of metal, since it is installed in the natural environment, it is desirable to increase the corrosion resistance by applying polyethylene coating or plating. Suitable for improving the corrosion resistance is a pawl form made from a steel wire plated with an alloy of 80 to 95% by weight of zinc and 5 to 20% by weight of aluminum.

  FIG. 7 is a perspective view illustrating the construction procedure of the expanded metal-shaped small-stop mold shown in FIG.

  7 is an example in which the height of the wall surface is the same as the height of the honeycomb structure. Hereinafter, the construction procedure of the honeycomb retaining wall with the small stopper when the height of the small stopper mold is about the same as the height of the honeycomb structure will be described. Before installing the honeycomb structure at the lowest layer of the honeycomb retaining wall, the fore-edge mold is placed in a position that becomes the fore edge. It constructs so that the 1st-layer honeycomb structure may be mounted in the bottom face part of the installed small-stop mold.

  FIG. 7 shows a point in time after the first-layer small-sized mold and the honeycomb structure are installed, and then the second-layer small-sized mold and the honeycomb structure are installed thereon. The second-layer fore-end mold is placed on the already-installed first-layer honeycomb structure and fore-end form while aligning the wall surface. A second-layer honeycomb structure is installed on the back surface of the installed second-layer fore-end mold. The same procedure is repeated for the third and subsequent layers, and the honeycomb structure and the small edge formwork are stacked to a predetermined height to construct a honeycomb retaining wall to which the small edge stopper is added.

  The small-mouth mold shown in FIG. 7 shows an example in which the height of the wall surface portion is approximately the same as the height of the honeycomb structure. However, the height of the wall surface portion of the small-mouth mold is not necessarily the same. Even in such a case, it is desirable that the height of the wall surface portion of the small-stop mold is an integer multiple of the height of the honeycomb structure. Just install the formwork. When the height of the wall surface portion of the small-stop mold and the height of the honeycomb structure are different, an unnecessary portion of the small-block mold is generated between the small-block mold and the stepped honeycomb retaining wall slope, Unnecessary portions of this small-end mold can be cut with a wire cutter or a bolt clipper.

  FIG. 8 is a perspective view when a honeycomb retaining wall is constructed and completed by using the expanded metal-shaped small-stop mold shown in FIG.

  FIG. 9 is a perspective view of a connection-type small-stop mold that is lattice-shaped and can be connected vertically.

  The wall-type part and the bottom part are formed of a lattice body, and the upper end of the longitudinal axis of the wall-surface part lattice body is bent once toward the retaining wall side, and further from there. It is a small mouth-stopping form frame comprising a crank portion having a crank shape that is bent so as to be parallel to a wall surface portion, and an insertion portion at the tip of the crank portion.

  Further, the connection type mouth-stop mold of the present invention includes a wall surface horizontal axis member closest to the coupling portion between the wall surface portion and the bottom surface portion, and a bottom surface horizontal axis closest to the coupling portion between the wall surface portion and the bottom surface portion. A mouthpiece mold having a receiving portion for inserting the insertion portion between a material and a material.

  There are a crank portion 17 and an insertion portion 18 at the upper end portion of the vertical axis of the wall surface portion 14 lattice body of the connection type small-stop mold 16. The crank portion 17 has a crank shape that is bent once on the retaining wall side and then bent so as to be parallel to the wall surface portion. There is an insertion part 18 at the upper part of the crank part 17. The insertion part 18 is connected to the upper and lower connection type fore-end molds when the next connection type fore-end type molds are stacked on the connection type fore-end type molds. Used to connect

  In addition, a receiving portion 19 is provided in the connecting portion between the wall surface portion and the bottom surface portion of the connection-type small-stop mold, into which the insertion portion 18 of the connection-type small-stop mold that comes down when stacked is inserted. Yes. Projections 20 are provided on the back side of the bottom portion 15 in order to improve the integrity with the honeycomb structure.

  The connection type small-stop mold is manufactured by bending one grid body or welding two grid bodies, but the manufacturing method and material are not particularly limited. The size of the connection-type small-stop mold is not particularly limited, but the height from the connecting portion of the wall-type part to the bottom of the connection-type small-stop mold to the crank part is the same as the height of the honeycomb structure or the honeycomb. Desirably equal to an integral multiple of the height of the structure. The size is preferably such that it can be carried by human power.

  FIGS. 10 to 12 show a procedure for constructing a honeycomb retaining wall using the connection type small-stop mold of the present invention. Below, an example of the construction of the joint-type small-stop mold is shown in which the height from the connecting portion between the wall surface portion and the bottom portion of the joint-type small-stop mold to the crank portion is about twice the height of the honeycomb structure. .

  The connection type mouthpiece mold according to the present invention is provided with the mouthpiece mold and installing the honeycomb structure up to the height of the crank portion on the retaining wall side of the mouthpiece mold, The small-mouth-stop mold is characterized in that the small-mouth portion can be formed by inserting the plug-in portion into the receiving portion of the small-mouth-stop mold placed immediately above and connecting the small-mouth stopper molds to each other.

  FIG. 10 is a perspective view when the first layer of the connecting type small-end form 16 and the honeycomb structure 9 is installed. The connection-type edge-stopping mold 16 is installed at a position corresponding to the edge of the honeycomb retaining wall. The connection type small-stop mold 16 may be placed on the installation surface, but may move during the construction. Therefore, it is better to temporarily fix it to the bottom surface with an anchor pin or the like.

  In order to prevent spillage of the filler on the wall surface side of the wall surface portion 14 of the installed joint type small-stop mold 16, a sucking prevention material 21 made of a nonwoven fabric or the like is pasted. In the case of using earth and sand containing fine particles as the filler, if it is only a connection type small-stop mold, the eyes are too rough and spills or surface erosion with water. In order to prevent these, a sucking prevention material is used. The suction preventing material 21 is a resin sheet or a nonwoven fabric having holes in a mesh shape. The hole diameter of the evacuation prevention material needs to be finer than the mesh of the small mouth-stop mold. When the wall surface is greened, the evacuation prevention material may be a vegetation mat in which plant seeds are embedded in a nonwoven fabric or the like. If the filling material is larger than the lattice of the small-sized mold such as crushed stone, the suction preventing material need not be installed.

  After installing the connection type small-stop mold, the first-layer honeycomb structure is installed. After the first layer is installed, the second layer honeycomb structure is laminated.

  FIG. 11 is a perspective view when two layers of honeycomb structures are installed, and then a connection type small-stop mold is installed thereon. At the top end portion of the honeycomb structure of the second layer, a connection type fore-end mold (upper) 23 is installed so as to fit into the lower type connection type fore-stop mold (lower) 22. An anti-sucking material 21 is also attached to the connection-type small-stop mold (upper) 23.

  FIG. 12 is an enlarged perspective view of a connecting portion when connecting and connecting the joint type fore-end molds of the present invention up and down.

  After installing the connecting type small-stop formwork (lower) 22, the two-layer honeycomb structure 9 is constructed. The top end portion of the second-layer honeycomb structure 9 is connected to the combined small-end formwork (lower) 22. The height is about the same as the position of the crank portion 17. The bottom surface portion of the upper small-end mold 23 is installed at the top end of the second-layer honeycomb structure 9. At this time, the insertion portion 18 of the connection type small mouth mold (lower) 22 is installed so as to be inserted into the receiving portion 19 of the connection type small mouth mold (upper) 23.

  The receiving part 19 of the connection type small-stop mold (upper) 23 includes a wall surface horizontal shaft member 24 closest to the connecting part between the wall surface part and the bottom surface part, and a bottom surface part closest to the connecting part between the wall surface part and the bottom surface part. It is comprised by the clearance gap with the horizontal shaft material 25. FIG. If this gap is not larger than the outer diameter of the insertion part 18, the insertion part 18 cannot be inserted into the receiving part 19. However, if it is too wide, it is possible to stably install the connected small edge mold (upper) until the honeycomb structure is built on the retaining wall side of the connected small edge mold (upper) 23. Can not. The gap between the wall portion horizontal shaft member 24 and the bottom surface portion horizontal shaft member 25 is desirably about 1.2 to 5 times the thickness of the insertion portion 18.

  It is desirable that the crank width of the crank portion 17 be slightly larger than the sum of the vertical axis material of the wall surface portion and the horizontal wall material 24 of the wall surface portion. The best is about 1.2 to 4 times the sum of the vertical axis material of the wall surface part and the horizontal axis material 24 of the wall surface part. If it is too large, it will be difficult to match the wall surface portions of the connected fore-edge mold (lower) 22 and the connected fore-edge frame (upper) 23. A small-stop mold is manufactured so that the insertion part 18 and the bottom part horizontal shaft member 25 do not fit when connected vertically.

  FIG. 13 is a perspective view when a honeycomb retaining wall is constructed and completed using the connection type fore-end mold of the present invention.

  When the connected small edge mold is different from the height of the honeycomb structure in the construction, the connected small edge mold is different from the height of the honeycomb structure. Between the stepped honeycomb retaining wall and the sloped surface of the honeycomb retaining wall, there is an unnecessary part of the connected small edge mold that protrudes from the small edge of the honeycomb retaining wall. Cut with a bolt clipper. If the connection type small-stop mold form in which the height from the bottom to the crank part of the connection-type small-stop mold is about the same as the height of the honeycomb structure is used for construction, the step interval of the honeycomb retaining wall and the connection Since the intervals between the mold stop molds coincide, it is not necessary to perform the above cutting operation.

  A honeycomb retaining wall that is stronger and more stable can be constructed by using a fore-end mold that is used to prevent collapse or erosion of the filler from the small portion of the honeycomb retaining wall of the present invention.

It is a perspective view before expansion of a honeycomb-shaped solid reinforcement material (a hole is in a strip material). It is a perspective view before expansion of a honeycomb-like solid reinforcing material (a hole is provided in a strip material excluding a slope portion strip material). It is a perspective view at the time of expansion | deployment of a honeycomb-shaped solid reinforcement material (it has a hole in strip material except a slope part strip material). It is a perspective view of the honeycomb retaining wall which piled up the honeycomb structure. It is a perspective view of the small mouth stop formwork (expanded metal shape) of this invention. It is a perspective view of a small mouth-stop formwork (shape which attached many holes to a flat plate) of the present invention. It is a perspective view at the time of construction of the small mouth stop formwork of this invention. It is a perspective view at the time of completion of the honeycomb retaining wall using the small mouth-stopping mold of the present invention. It is a perspective view of the connection type small mouth stop form of the present invention. It is a perspective view at the time of construction of the connection type small mouth form of this invention. It is a perspective view at the time of construction of the connection type small mouth form of this invention. It is sectional drawing at the time of the up-and-down connection of the connection type small-mouth stop mold of this invention. It is a perspective view at the time of completion of the honeycomb retaining wall using the connection type small-stop mold of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Honeycomb-shaped solid reinforcement material 2 Strip material 3 Hole 4 Bonding part 5 Extension direction 6 Slope part 7 Cell 8 Filler 9 Honeycomb structure 10 Back ground part 11 Side ground part 12 Fork part 13 Fork stop formwork DESCRIPTION OF SYMBOLS 14 Wall part 15 Bottom part 16 Connection type | mold mouthpiece formwork 17 Crank part 18 Insertion part 19 Receiving part 20 Protrusion part 21 Suction prevention material 22 Connection type | mold mouthpiece formwork (lower)
23 Linkage type small formwork (top)
24 Wall shaft horizontal shaft material 25 Bottom surface horizontal shaft material

Claims (4)

A method for constructing a small portion of a honeycomb retaining wall, in which a honeycomb structure in which a filler is filled in a honeycomb-like three-dimensional reinforcing material having a honeycomb structure made of a plate-like or net-like polymer material is laminated horizontally,
Before installing the honeycomb structure of the lowermost layer (first layer) of the honeycomb retaining wall,
An L-shaped fore-end mold that consists of a wall surface and a bottom surface is installed at a position that becomes an edge of the honeycomb retaining wall,
Laminating one or more layers of the honeycomb structure so that the first layer of the honeycomb structure is placed on the bottom portion of the installed small form mold,
Further, the step of installing the forelock mold on the honeycomb structure and laminating one or more layers of the honeycomb structure on the bottom surface of the installed forehead mold is repeated. Build a small part,
A method for constructing the edge of a honeycomb retaining wall. The pawl formwork is
The bottom portion and the wall portion is formed from a grid,
A crank portion having a skilled wall surface grid folding Re bends cranked so that the shape of the vertical axis upper end portion is parallel to the folding Re bending further equivalent wall surface once retaining wall side,
Is linked small hush formwork consisting of the upper portion of the insertion portion than those said crank portion,
The method for constructing a fore edge portion of a honeycomb retaining wall according to claim 1 . The connection type mouthpiece formwork is
A wall surface horizontal shaft member closest to a joint portion between the wall surface portion and the bottom surface portion;
Between the closest bottom portion abscissa material coupling portion between those wall surface and those bottom surface portion,
It is a connection type small-stop mold frame provided with a receiving part for inserting the insertion part ,
The method for constructing a fore edge portion of a honeycomb retaining wall according to claim 2 . A step of laminating one or more layers of the honeycomb structure up to the height of the crank portion of the connection type forelock mold when laminating the honeycomb structure on the bottom part of the connection type forelock mold ;
When installing the upper joint type small stopper mold on the honeycomb structure, the lower part of the connected small joint mold is installed on the upper part of the connected small joint mold. step of placing the write Murrell so insert the receiving portion of the hush mold, fore edge construction method according to claim 3 honeycomb retaining wall further comprising a city.