JP2950147B2 - Joining structure and joining method of embankment reinforcing material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining structure and a joining method for a reinforcing material used in a method for reinforcing an embankment.

[0002]

As a reinforcement material that is used in the Background of the Invention reinforced soil method,
BACKGROUND ART A fiber crystal for civil engineering made of a polymer material called a so-called geotextile is known. Such geotextiles are mainly used for the purpose of reinforcing the embankment or draining the embankment, and can be used as, for example, a resin net, a polymer grid, a nonwoven fabric, etc. It is laid in layers to prevent the collapse of the slope and the spread of cracks, and to reinforce the entire embankment, and to provide a structure that is safe with respect to earthquake resistance.

[0003] The work of laying the reinforcing material in the embankment is performed, for example, by spreading a rolled sheet piece along the surface of each embankment layer. And fix it in the embankment by compaction work.

On the other hand, it is necessary to lay such geotextile integrally over the entire embankment layer in order to enhance its reinforcing effect. However, it is impossible to cover the entire vast embankment layer with one geotextile at a time. Because it ’s difficult
It is necessary to connect the sheet pieces of a predetermined size that can be transported integrally while laying them on the surface of the embankment.

As means for joining such geotextile sheet pieces, conventionally, for example, a method in which the edges of the sheet pieces are butted together, and the butted portions are joined with a retaining pin, and the edges are formed with a predetermined width. A method of joining this overlapping part with a fastening pin, tying it with a number line, suturing the overlapping part with a connecting rope, and joining a joint rod consisting of a reinforcing rod etc. to a net A method of joining the grids by sewing the grids is adopted.

[0006]

However, in any of the above-mentioned conventional methods, the joining operation requires a lot of trouble, which causes a reduction in construction efficiency. Also, since the joining work requires suitable equipment,
In addition to having to prepare these devices in advance, especially in the joint structure using fastening pins, wires, reinforcing bars, etc.
The corrosion in the soil lowers the joint strength, lowers the strength of the entire geotextile, and may cause collapse of the embankment.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and the joining structure is simple and the joining structure can be improved, and the joining structure and the joining method of the reinforcing material for the embankment can be improved in strength without corrosion. It is intended to provide.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and is a joining structure of a reinforcing material for embankment laid in a layer inside an embankment. A male hook-and-loop fastener arranged separately from the reinforcing material at the joining end of the reinforcing material, and a female hook-and-loop fastener separately arranged at the joining end of the other reinforcing material adjacent thereto. It is intended to be overlapped and joined.

The present invention also relates to a method for joining reinforcing materials for embankment, which are laid in layers inside the embankment, wherein the joining ends of adjacent reinforcing materials to be joined are overlapped,
The male surface fastener on one across the joint end portions combined ne polymerization, while the female surface fastener separately disposed opposite the said reinforcement overlapping male and female surface fasteners while nipping the the bonding end portion The gist is that the joining edges are integrally joined by joining together.

[0010]

According to the joint structure of the present invention having the above-described structure, the reinforcing material is attached to the joining end of one reinforcing material to be joined.
And male surface fastener arranged separately, which with the simple operation of the joint end portion of the other adjacent reinforcement simply combined bonding overlapped and female surface fastener arranged separately from the reinforcement material, easily The embankment reinforcing material can be integrally joined at the laying site, and the surface fastener can be made of the same non-corrosive material as the embankment reinforcing material, whereby the durability can be easily improved.

Further, according to the joining method of the present invention, the joining end portion is sandwiched by the separately provided surface fastener without attaching the surface fastener to the embankment reinforcing material in advance, so that it can be easily installed at the laying site. The embankment reinforcing material can be integrally joined.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a joining structure and a joining method of a reinforcing member according to this embodiment, FIG. 2 is a plan view showing the joining state, and FIG. 3 is a sectional view of the same.

Examples in [0014] figure, as an example of a geotextile 1 as a reinforcing material, but was <br/> have use a polymer grid. The geotextile 1 is formed by knitting high-strength fibers obtained by stretching a resin net made of a polymer such as polyethylene or polypropylene, and a grid having a size of, for example, about 20 mm is formed on the surface. At the same time, it is formed as a roll-shaped sheet piece having a width of, for example, about 2.0 m, which is suitable for carrying and laying work.

The geotextile 1 is laid on the laying site, that is, on the surface of the embankment layer, so as to cover the embankment layer by developing a roll-shaped sheet piece, and joins the ends of adjacent sheet pieces. Integrated.

The work for integrating the sheet pieces is performed by overlapping the surface fasteners 2 and 3 while holding the joining edge 1a of the geotextile 1 with the surface fasteners 2 and 3. That is, for example, a tape-shaped hook-and-loop fastener (male) 2 is provided between the lower surface of the joint end 1a of one of the geotextiles 1 to be laid first and the embankment layer.
Is installed in advance or by inserting it below the joint end 1a of the already laid geotextile 1 so that the joint surface faces upward. Then, the other geotextile 1 to be joined is laid with its end 1a overlapped with the joining end 1a of the already laid geotextile 1 with a predetermined overlap dimension d, and peeped through the grit of the joining portion. When the surface fastener (female) 3 of the same size is overlapped and pressed from above against the surface fastener (male) 2, the geotextile 1 at the joint end 1 a is obtained.
The hook-and-loop fasteners 2 and 3 are surface-joined with the sheet material sandwiched therebetween, whereby the adjacent geotextiles 1 are integrally joined while being held by the hook-and-loop fasteners 2 and 3 to complete the joining operation.

Here, the hook-and-loop fasteners 2 and 3 can be manufactured using the same material as the geotextile 1 which does not corrode underground, as shown in an enlarged part of FIG. The hook-and-loop fastener (male) 2 is a synthetic fiber base fabric 2a made of, for example, vinyl chloride, vinylon, or the like, and a protruding material 2b or a hook-like material having an enlarged tip is densely protruded on the surface. . Also hook-and-loop fastener (female)
Numeral 3 is, for example, a loop-shaped material 3b densely raised in a brushed state on the surface of a similar synthetic fiber base fabric 3a. When both are pressed, the tip of the protruding material 2b is entangled with the loop-shaped material 3b,
A strong and semi-permanent joining state can be obtained. In addition, the size such as the width of the surface fasteners 2 and 3 can be appropriately designed in consideration of the bonding strength and the like.

In the above embodiment, the case where the geotextile 1 is integrally joined by using the surface fasteners 2 and 3 separately manufactured from the geotextile 1 has been described.
The hook-and-loop fasteners 2 and 3 are previously attached to the joint end of the geotextile 1 when the geotextile 1 is manufactured in a factory or the like, and at the laying site, the work of simply stacking the hook-and-loop fasteners 2 and 3 attached to the geotextile 1 is performed. Thereby, the geotextile 1 can be integrally joined.

Further, in the above embodiment, the case where a polymer grid is used as the geotextile 1 as the embankment reinforcing material has been described. However, the present invention is not limited to this, and other embankment reinforcing materials such as resin nets and nonwoven fabrics are used. It can also be used for materials.

[0020]

As described above in detail, according to the joining structure of the embankment reinforcing material according to the present invention, the male hook-and-loop fastener arranged at the joining end of one reinforcing material to be joined and the male hook-and-loop fastener adjacent thereto. By simple work of overlapping and joining the female hook-and-loop fastener arranged at the joint end of the other reinforcing member, the embankment reinforcing member can be easily joined together at the laying site, and the hook-and-loop fastener can be removed. By using a material that does not corrode similarly to the embankment reinforcing material, the durability of the embankment reinforcing material can be easily improved.

According to the embankment reinforcing material joining method of the present invention, by using a separately provided hook-and-loop fastener, the hook-and-loop fastener is not attached to the embankment reinforcing material in advance, so that it can be easily installed at the laying site. The embankment reinforcing material can be integrally joined.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a position embodiment of a joint structure of a reinforcing member according to the present invention.

FIG. 2 is a plan view showing the same bonding state.

FIG. 3 is a sectional view of the same.

[Explanation of symbols]

 1 Geotextile (reinforcing material for embankment) 1a Joined end part 2,3 surface fastener

Claims (2)

(57) [Claims] 1. A joining structure of a reinforcing material for an embankment laid in a layer form inside an embankment, wherein a male surface separately arranged from the reinforcing material at a joining end of one reinforcing material to be joined. The reinforcement is attached to the joining end of the fastener and the other reinforcing material adjacent thereto.
A joining structure for a reinforcing material for embankment, wherein the joining material is constituted by overlapping and joining a female hook-and-loop fastener separately arranged from a material. 2. A method for joining reinforcing materials for embankment laid in a layer form inside an embankment, wherein joining ends of adjacent reinforcing materials to be joined are overlapped, and the joined joining ends are overlapped. sandwiched therebetween a male surface fastener on one, the female surface fastener on the other separately disposed opposite to the said reinforcement, by combined bonding overlapping male and female surface fasteners while nipping the the bonding end portion, said joining A method of joining a reinforcing material for embankment, comprising joining edges together.