JP2004353430A - Reinforcement/construction method for earth structure using mats made by mat manufacturing method utilizing used tires - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restructure used tires to a new mat without spending an excessive cost and time which is capable of providing a sufficient strength and a stability required for reinforcing the earth when building an earth structure as well as a good scenery. <P>SOLUTION: A flat-shaped mat or three-dimensional cellular mat is formed by combining together used tires cut to the pieces of side surfaces and treads, when these are used for building an earth structure, tensions are given to the earth, thereby giving a function of reinforcing the earth and reducing settlement. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method of manufacturing and using a ground reinforcing mat formed by combining pieces obtained by separating old tires into side surfaces and tread surfaces.
[0002]
[Prior art]
Conventional methods of using old tires used for soil structures and seawalls are not to use the tires divided into pieces, but to use concrete by filling the tires themselves with concrete or soil (for example, see Patent Document 1), or In addition, it is used as crushed pieces and mixed with other materials (for example, see Patent Document 2).
[0003]
[Patent Document 1]
JP-A-10-46511 (page 3, FIG. 2)
[Patent Document 2]
JP-A-2002-4536
[Problems to be solved by the invention]
In the conventional technology of using old tires, the structure was constructed by using the tires as they were and filling them with soil and concrete. If it is used for an earth structure with insufficient cracking, excessive ground deformation may occur. Furthermore, the appearance of the tire itself is undesirably exposed because it is exposed. In addition, in the case of mixing with other materials, there is a problem that the secondary processing is expensive.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a function of reinforcing a soil by forming a mat by combining pieces obtained by separating old tires, and applying a tensile force to the soil. The three-dimensional cellular mat restrains oozing outside the soil and consequently reduces soil subsidence. That is, the mat of the present invention provides a function equivalent to that of a ground reinforcement product such as a geogrid and a geocell at a low cost, and also provides a method of easily transporting, storing and handling, and effectively utilizing waste. Further, when used for construction of an earth structure such as a retaining wall, it is easy to attach a cover and plant a tree, and provides a good appearance.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
In the present invention, an old tire 1 is cut into a side surface 2 and a tread surface 3, and divided pieces are combined to form mats 6, 7, 8, 9, 10, which are easy to handle, and the mats are used for ground reinforcement. Things.
[0007]
The old tire is divided into three pieces, two side surfaces 2 and one tread surface 3. The side surface 2 is a donut-shaped slightly curved disk, and the tread surface 3 is a strip-shaped flat plate.
[0008]
Each piece can be easily joined by a mechanical method using bolts or rivets or by an adhesive. By changing the number of pieces to be joined, it is possible to make a mat of any shape.
[0009]
【Example】
An example will be described. FIG. 1 is a schematic external view of a tire 1, in which a side surface 2 and a tread surface 3 are separately cut. The side surface 2 in FIG. 2 is a donut-shaped disk having a hollow portion 4, and the tread surface 3 in FIG. 3 is a band-shaped plate.
[0010]
FIG. 4 shows an example in which the disks on the side 2 are joined 5 to form a flat mat 6 of an arbitrary size. FIG. 5 shows a strip-shaped plate 7 joined to a strip-shaped mat 7 having an arbitrary length. FIG. 6 shows a case where the three-dimensional cell 8 is formed by fixing the side surfaces of the band-shaped mat at regular intervals.
[0011]
FIG. 7 is a bird's-eye view of a flexible flat mat 9 made by combining the side surface 2 and the tread surface 3 made according to the present invention. The donut-shaped side surfaces 2 and the band-shaped tread surfaces 3 are alternately combined and mechanically joined to form a flat mat 9 having excellent flexibility, strength, and durability.
[0012]
FIG. 8 shows a three-dimensional cellular mat 10 in which a long band-shaped tread surface is folded in half by bonding, and the side surfaces of each tread surface are stuck to each other at specific intervals to combine cells in a honeycomb shape. The three-dimensional cellular mat 10 provides a stable honeycomb structure with open top and bottom surfaces.
[0013]
An application example of the present invention to an earth structure is shown. FIG. 9 is a cross section of the flat mat layer 9 installed in the embankment slope 12 on the ground 11. FIG. 10 is a cross section of the flat mat 9 installed to reinforce the ground under the foundation 13. FIG. 11 is a cross-sectional view of the flat mat layer 9 provided to prevent uneven settlement of the box culvert 14. FIG. 12 is a cross section of the flat mat 9 installed to prevent erosion of the revetment 15.
[0014]
13 to 18 show a procedure for constructing a retaining wall using the mat according to the present invention. FIG. 13 shows the pile 16 being driven into the ground. The pile to be driven is a steel pipe pile or a concrete pile. The pile hollow is used to join the cover plates in the last step of making the retaining wall. FIG. 14 shows a three-dimensional cellular mat 10 placed on the ground, with a stake penetrating some of the outer cells. The three-dimensional cellular mat 10 can be shortened like an accordion during transportation or construction. FIG. 15 shows a state where the soil is put into the three-dimensional cellular mat 10 and compacted. FIG. 16 shows a three-dimensional cellular mat 10 in which a planar mat 6 is laid slightly inside a pile, and the planar mat 6 is fixed to the ground with a hook bolt or the like. By repeating this procedure, retaining walls are sequentially constructed. After reaching a predetermined height, a cover plate 17 made of wood or another material as shown in FIG. 17 is fixed with bolts. FIG. 18 shows an example of the retaining wall 18 constructed according to the present invention. A small step can be provided and planting 19 can be performed as needed.
[0015]
【The invention's effect】
The present invention is implemented in the form described above, and has the following effects.
[0016]
The used tires, which are waste, can be economically used 100% effectively.
[0017]
By dividing old tires into pieces and reconstructing them into mats, transportation, storage and handling are easy.
[0018]
The ground reinforcing mat of the present invention provides an excellent geotechnical material due to its sufficient strength and durability, which was functionally held as a tire.
[0019]
By laying the ground reinforcement mat, it is possible to increase the stability of the slope, increase the bearing capacity of the foundation ground, suppress settlement, and prevent erosion of the revetment.
In the three-dimensional cellular mat of the present invention, oozing to the outside of the soil is restrained, and as a result, settlement is suppressed. By superimposing the three-dimensional cellular mat and the planar mat in a plurality of stages, it is possible to construct a retaining wall having an easy appearance and excellent appearance.
[Brief description of the drawings]
FIG. 1 is a schematic external view of an old tire including a side surface and a tread surface.
FIG. 2 is a donut-shaped side surface.
FIG. 3 is a belt-like tread surface.
FIG. 4 is a flat mat formed by joining donut-shaped side surfaces.
FIG. 5 is a band-like mat formed by joining belt-like tread surfaces.
FIG. 6 is a three-dimensional cell formed by fixing the surfaces of a band-shaped mat at regular intervals.
FIG. 7 is a planar mat having high flexibility made by combining a tread surface and a side surface.
FIG. 8 is a three-dimensional cellular mat having a honeycomb structure formed by joining three-dimensional cells.
FIG. 9 is a cross-section of a planar mat layer installed on an embankment slope.
FIG. 10 is a cross section of a planar mat installed to reinforce the foundation ground.
FIG. 11 is a cross-section of a planar mat layer provided to prevent differential settlement of a box culvert.
FIG. 12 is a cross-section of a flat mat installed to prevent erosion of the slope.
FIG. 13
FIG. 17 shows a procedure for constructing a retaining wall according to the present invention.
FIG. 18 schematically shows a retaining wall constructed according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Old tire 6 Flat mat made from side 2 Tire side 7 Long strip made from tread 3 Tire tread 8 Cell made by folding tread 4 Cylindrical hollow 9 Plane made by combining side and tread Mat 5 Joining part 10 Three-dimensional cellular mat 11 made by combining tread surfaces 11 Original ground surface 16 Piles 12 Embankment slope 17 Cover plate 13 Foundation 18 Retaining wall completed with old tires 14 Box culvert 15 Seawall 19 Planting surface

Claims (4)

How to use old tires separately from the side and tread Manufacturing method of ground reinforcement mat constructed by joining side surface and tread surface of separated old tire Reinforcement method of soil structure using ground reinforcement mat manufactured using old tires Construction method of retaining wall using ground reinforcement mat manufactured using old tires

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