JPH0757954B2 - Geotextile with integrated anchorage and steep embankment using it - Google Patents

Description

TECHNICAL FIELD The present invention relates to a geotextile integrated with a fixing portion for embankment reinforcement used in a state of being fixed to a concrete wall and a steep slope embankment using the geotextile. Is.

“Prior Art” M in FIG. 13 indicates a bank formed by the conventional method. That is, in order to create the embankment M, the geotextile 2 is laid on the ground L, the sandbags 90 supporting the outer wall surface 3a of the embankment M are stacked, for example, three layers at a time, and then the embankment material 3 is placed on the geotextile 2. By covering the sandbag 90 by rolling it up and rolling it to a predetermined height and then winding up the end of the geotextile 2 and repeating the above steps, the sandbag 90 and the embankment material 3 behind it are overlapped. The soil retaining wall is formed by the sandbag 90 and the embankment M behind it is formed.

"Problems to be solved by the invention" By the way, in the embankment constructed as described above, it takes a lot of time to create the sandbag 90 used for forming the wall portion, and also when the created sandbag 90 is piled up. It takes time and is inefficient. Further, when the embankment M is extremely high or when the outer wall surface 3a is steeply inclined, the displacement of the outer wall surface 3a becomes large. In that case, however, such a embankment structure cannot sufficiently suppress the displacement. Therefore, the embankment M
Problems such as lack of stability may occur.

In addition, as the conventional construction methods, such as the Tail Arme construction method and the Tas construction method, there were those that directly connect the reinforcing material to the concrete panels, but in these construction methods, the concrete panels are not rigidly connected, so that the uneven settlement When the wall surface is raised or sticks out, unevenness easily occurs on the wall surface, and there is a problem in stability.

This statement was made in view of the above circumstances, and when it is used to create a steep slope embankment that does not take up a lot of land, the construction can be simplified and the construction period can be shortened, and the height of the embankment can be reduced. It is an object of the present invention to provide a steep slope embankment using a fixing part integrated geotextile and a barrel which can ensure excellent stability over a long period of time.

"Means for Solving the Problem" The fixing part integrated geotextile of the present invention comprises a geotextile laid in a substantially horizontal state in the embankment and a fixing part made of precast concrete fixed to the wall of the embankment. The geotextile and the fixing unit are integrally formed in a state where the end of the geotextile is embedded in the fixing unit.

Further, a steep slope embankment using the anchorage-integrated geotextile of the present invention is a steep slope embankment using the anchorage-integrated geotextile, which is erected at the end of the embankment and horizontally in the embankment inside. Along with having a concrete wall part with extending ribs, the geotextile is laid in a substantially horizontal state in the embankment behind it,
The fixing portion integrally provided at the end portion of the geotextile is fixed while being placed on the rib.

Further, another fixing part-integrated geotextile of the present invention is the above fixing part-integrated geotextile, in which a connecting member that is connected to the wall portion of the embankment is partially embedded in the fixing part and projects to the side opposite to the geotextile. It is provided in.

In addition, another steep slope embankment using the anchorage-integrating type geotextile of the present invention is a steep slope embankment using the anchorage-integrating type geotextile, in which a concrete wall portion erected at the end of the embankment is provided. In addition to the above, the geotextile is laid in a substantially horizontal state in the embankment, and the fixing portion integrally provided at the end portion of the geotextile is connected to the wall portion via the connecting member.

[Operation] In the fixing portion integrated geotextile of the present invention, the end portion of the geotextile is embedded in the fixing portion made of precast concrete, and the geotextile and the fixing portion are integrally formed,
It is not necessary to cast the soil mortar etc. in place when forming the embankment to form the anchoring part, but it is also buried in the embankment when creating a steep slope embankment with a concrete wall that stands almost vertically. By fixing the fixing part that is integrally provided at the end of the geotextile on the rib inside the embankment of the wall, the geotextile can be easily fixed to the wall of the embankment. be able to. For this reason, not only can the walls of the embankment be erected substantially vertically to make effective use of the limited site, but also the walls can be supported by geotextiles to prevent the embankment from collapsing to the outside. Excellent stability is secured over a long period of time, and such steep slope embankment can be constructed in a short period of time.

Further, in the steep slope embankment of the present invention, since it has a wall made of concrete erected at the end of the embankment, it is possible to effectively utilize the limited site without taking up a lot of the site for the embankment. Since no sandbag or the like is used like the wall portion of the embankment, the construction can be simplified and the construction period can be shortened. Moreover, since the fixing part that is integrally provided at the end of the geotextile embedded in the embankment is fixed on the rib on the inside embankment side of the wall, it is fixed. The wall is kept upright with pull-out resistance preventing collapse of the embankment to the outside, which ensures excellent stability over a long period regardless of the height of the embankment. The Rukoto.

Further, in another fixing part integrated geotextile of the present invention, a connecting member that is connected to the embankment wall part is attached to the fixing part made of precast concrete which is integrated with the geotextile in a state where the end part of the geotextile is embedded. Since it is partially embedded and is provided so as to project to the side opposite to the geotextile, it is not necessary to form a fixing part by spot casting such as soil mortar when forming the embankment, and it is made of concrete erected vertically. Even when creating a steep slope embankment having a wall portion, by connecting the fixing portion integrally provided at the end of the geotextile embedded in the embankment with the wall portion via the connecting member, The end of the geotextile can be easily fixed to the wall of the embankment. Therefore, not only can the walls of the embankment be erected substantially vertically to make effective use of the limited site, but also the walls can be supported by geotextiles to prevent the embankment from collapsing to the outside. Excellent stability is secured over a long period of time, and such steep slope embankment can be constructed in a short period of time.

In addition, in another steep slope embankment of the present invention, since it has a concrete wall portion that is erected at the end of the embankment, it is possible to effectively utilize the limited site without taking up many sites for the embankment. Since the sandbag or the like is not used unlike the wall portion of the conventional embankment, the construction can be simplified and the construction period can be shortened. In addition, since the fixing part that is integrally provided at the end of the geotextile embedded in the embankment is connected to the wall via the connecting member, the geotextile pulls out to the outside of the embankment. The walls are kept upright while collapse is prevented, which ensures excellent stability for a long time regardless of the height of the embankment.

[Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

The fixing part-integrated geotextile of this embodiment is laid in the embankment in a substantially horizontal state to reinforce the embankment, and is fixed to a concrete wall part standing upright at the end of the embankment to form the wall part. Configured to support,
As shown in FIG. 1, a geotextile 2 such as a fiber grid and a precast concrete anchoring portion 4 formed in a strip shape with the end of the geotextile 2 embedded are integrally formed. is there.

As the geotextile 2, which is the main structure of the fixing part-integrated geotextile, a geofabric such as a woven fabric or a non-woven fabric or a geonet may be used, but preferably, a so-called polymer material formed in a lattice shape is used. It is better to use a geogrid such as a polymer grid or a fiber grid, and it is particularly preferable to use a fiber grid among the geogrids.

Specifically, this fiber grid has a structure in which fiber bundles composed of a plurality of aligned continuous fibers intersect with each other to form a lattice, and each fiber of the fiber bundles is bound by a resin material. In addition, it is a lattice-like reinforcing material having excellent mechanical properties such as strength, tensile rigidity, shearing rigidity, and creep characteristics.

Also, as a kind of such a fiber grid, which shows a particularly excellent reinforcing effect in stabilizing the embankment when embedded in a layered manner in the embankment, was filed as Japanese Patent Application No. 1-189737. There is a grid reinforcement.

This lattice-shaped reinforcing material, one or more fiber bundles in the main axis direction composed of a plurality of aligned fibers, and two or more fiber bundles extending in the other direction cross each other to form a lattice, Those fiber bundles are bound by a resin material.

And, if such a grid-like reinforcing member is composed of, for example, a single-layer fiber bundle extending in the principal axis direction and a two-layer fiber bundle extending in the other direction orthogonal to this, the intersection portion thereof Is a cross-sectional shape of a three-layer structure in which a fiber bundle extending in the main axis direction and a fiber bundle extending in the other direction orthogonal to the main axis direction are laminated, and the outermost layer at the intersection is the other direction. Of the fiber bundle, the bulge of the intersection is crushed by press molding, the distance between the adjacent intersections in the main axis direction is more than the distance between the adjacent intersections in the other direction. Is also getting bigger.

As the fibers mainly constituting the lattice-like reinforcing material, glass fibers and carbon fibers which are lightweight and have high strength are suitable, but other fibers such as organic fibers, ceramic fibers and metal fibers are preferable if necessary. Etc. may be used. Also, these fibers may be used in an appropriate combination.

Further, as the resin material for binding the fibers of the fiber bundle, for example, vinyl ester resin or the like, which has good adhesiveness to the fibers and has sufficient strength itself, is suitable. Other resin materials may be used. Examples of other resin materials include unsaturated polyester resins, epoxy resins, and phenol resins.

The ratio of the fiber and the resin material is appropriately determined in consideration of the type and strength of the fiber, and further the usage pattern of the lattice reinforcing material, for example, the fiber is a glass fiber, the resin material is a vinyl ester resin. If the fiber is 30-70% by volume
It is desirable to consider it so that it is about 20 to 60% when the fiber is pitch-based carbon fiber, for example. When the ratio of the fibers is the above or less, the strength of the lattice-like reinforcing material is remarkably reduced, while if the proportion of the fibers is increased, a high-strength lattice-like reinforcing material can be obtained,
If the proportion is too high, molding becomes difficult, which is not preferable.

As shown in FIG. 1, the fixing portion 4 has a rectangular cross section and is formed in a strip shape along the end of the geotextile 2 with the end of the geotextile 2 embedded. And a U-shaped weld mesh 5 is embedded and reinforced therein, and a plurality of sleeve pipes 6 for forming through holes 6a in the thickness direction (vertical direction in the drawing) are arranged at equal intervals in the longitudinal direction. It is provided.

In addition, a V-shaped notch 10 is formed on the end surface of the fixing portion 4 on the embedded side of the geotextile 2 along the contact portion with the upper and lower surfaces of the geotextile 2. Therefore, even when the geotextile 2 in the embankment behind the anchoring part 4 is fixed to the concrete wall and the geotextile 2 is submerged due to the subsidence of the embankment or during the distribution and transportation of the geotextile 2. The geotextile 2 will not be sheared or damaged by the corner of the concrete on the end face on the embedding side of the fixing part 4.

As shown in FIGS. 2 and 3, the steep slope embankment using the fixing part-integrated geotextile having such a configuration has a concrete wall part H erected on a substantially horizontal ground L, and A backfill material 3 is filled in the back to form a backfill M, and a plurality of geotextiles 2 of the above-described fixing part-integrated geotextile are laid in layers in a substantially horizontal state in the backfill M. There is the above wall H
A plurality of horizontally extending ribs 7 are provided on the inside of the embankment M in the vertical direction at equal intervals, and a plurality of anchor bolts 8 are provided at the upper portion of each rib 7 at equal intervals, and the anchor bolts 8 are fixed. A nut 9 is fastened to the anchor bolt 8 in a state of being inserted into each through hole 6a of the portion 4, and the fixing portion 4 is fixed on the rib 7.

When constructing such a steep slope embankment, as shown in FIG. 2, the position where the wall portion H of the ground L is to be constructed is dug in advance, and concrete is cast into that portion, or The base 11 is provided by embedding a precast concrete block. In this case, the above base
An anchor bolt 8 is provided in the upper part of 11 in advance on the inner side of the embankment M with respect to the standing position of the wall portion H. Then, after doing this, by forming a frame on the base 11 and placing concrete, the wall portion H from the bottom to the first rib 7 is formed by arranging the anchor bolt 8 at a predetermined position. Then, after hardening, the mold is removed, and the fixing part 4 of the above-mentioned fixing part integrated geotextile is attached to the base 11 inside the embankment M of the wall part H, and the geotextile 2 is laid on the ground L.
After this, the embankment material 3 is filled behind the wall portion H up to the already formed height, the embankment material 3 is piled up to a height near the first rib 7 from the bottom, and the ribs are pressed on the rib 7 at the same time. The second rib from the bottom is installed by assembling the formwork, arranging the anchor bolt 8 at a predetermined position and placing concrete.
The wall H up to is molded. Then, after the wall portion H up to that height is hardened, it is demolded and the embankment material 3 is laid up to the laying height of the geotextile 2 to be mounted on the first rib 7 from the bottom.
Ribs on the inside of the embankment M of the wall H after laying
The fixing part 4 of the fixing part integrated geotextile is attached and fixed, the geotextile 2 is laid on the top of the already filled embankment material 3, and the embankment material 3 is placed on the geotextile 2.
Spread and level to roll. Then, by repeating the above-described work, the wall M up to a predetermined height is constructed and the embankment M behind it is constructed. As a matter of course, the construction of the wall portion H may be performed first and then the embankment work may be performed.

In this embodiment, as described above, the fiber grid (geotextile 2) having excellent mechanical properties such as strength, tensile rigidity, shear rigidity and creep property is embedded in the embankment material 3, The wall H is kept upright while the embankment M is prevented from collapsing to the outside due to the pullout resistance of the fiber grid, which makes it excellent for a long time regardless of the height of the embankment M. The stability will be secured.

Next, a second embodiment of the present invention will be described with reference to FIGS. 4 to 7.

The fixing unit-integrated geotextile of this embodiment is similar to the fixing unit-integrated geotextile of the first embodiment in that the geotextile 2 such as a fiber grid and the precast formed in a band shape with the end portion of the geotextile 2 embedded therein are provided. Although the fixing portion 4 made of concrete is integrally formed, in the fixing portion integrated geotextile of this embodiment, instead of the weld mesh 5, the fixing portion 4 is reinforced along the longitudinal direction of the fixing portion 4. Reinforcing bar 13
2 are embedded in the fixing portion 4, and a connecting member 12 for connecting to the wall portion of the embankment is partially embedded in the fixing portion 4 and provided so as to project to the side opposite to the geotextile 2.

The connecting member 12 is composed of a rectangular iron plate or the like that has been subjected to anticorrosion treatment, a connecting plate 14 having a bolt hole 14a formed in the center thereof, and parallel to each other by being welded to the upper surface of the connecting rate 14. And an end portion of the geotextile 2 and the rebar 13 above the anchor portion 15. With it placed,
The anchor portion 15, the reinforcing bar 13 and the geotextile 2 are temporarily fixed by a binding wire 16 such as a wire, and that portion is fixed to the fixing portion 4.
Is embedded in.

As shown in FIG. 5, when the fixing unit integrated geotextile having such a structure is manufactured, the bottom plate 17 and the bolts 20 are fixed upward at the left end of the upper surface of the bottom plate 17 in the figure. The connecting metal fitting 21 attached in step 1 and a pair of lower molds 18, 18 and upper molds 19, 19 arranged and used on the bottom plate 17 are used.

That is, as shown in FIG. 5, a set of lower molds 18, 18 are arranged in parallel on the bottom plate 17, and the connecting fittings 21 provided on the left end of the bottom plate 17 in the figure are connected. By fixing 22 the connecting plate 14 of the connecting member 12 to the bolt portion 20, the anchor portion 15 of the connecting member 12 is fixed to the lower stage formwork on the left side in the drawing.
18 It extends from the upper side to the right side and is arranged between each lower stage mold 18, 18. After doing this, the rebar 13 is placed at a position from the tip of the anchor 15 and the end of the geotextile 2 is extended to the left from the lower mold 18 on the right side in the figure. Place it on the anchor part 15 and the rebar 13 between the 18 and 18, this geotextile and the rebar 13 and the anchor part
15 and 15 are temporarily fixed with a binding wire 16 such as a wire, and a rebar 13 is placed on the end of the geotextile 2 at a position from the tip, and the rebar 13, geotextile 2 and anchor 15
And tentatively fasten them with a binding wire 16 such as wire. After this, the anchor parts 15 are placed on the lower molds 18, 18 respectively.
And, a set of upper molds 19, 19 is placed with the geotextile 2 sandwiched between them, and concrete is filled between the pair of upper molds 19, 19 and lower molds 18, 18. Then, by hardening the concrete in the formwork, the connecting member 12
After molding the fixing portion 4 with the anchor portion 15 embedded therein, and at the same time integrating the end portion of the geotextile 2 with the fixing portion 4, the connecting plate 14 of the connecting member 12 is removed from the connecting metal fitting 21, Further, by removing the upper molds 19 and 19 and the lower molds 18 and 18 and demolding from the bottom plate 17, a desired fixing section-integrated geotextile is obtained.

When the fixing unit-integrated geotextiles are manufactured in this manner, they may be manufactured one by one as described above. For example, as shown by a chain double-dashed line in FIG. A bottom plate 17 is further placed on the 19 and 19, a mold is assembled on the bottom plate 17, and concrete is filled in the mold to form a plurality of fixing portions 4 in a stacked state from the bottom to form a plurality of them collectively. Therefore, it is desirable to collectively manufacture a plurality of fixing unit integrated geotextiles.

In the steep slope embankment using the fixing part integrated geotextile manufactured in this way, as shown in FIG.
Like the steep slope embankment of the embodiment, it has a concrete wall portion H in which ribs 7 are formed, and the geotextile 2 of the geotextile integrated with the fixing portion is laid in the embankment in a substantially horizontal state. The fixing portion 4 integrally provided at the end portion of the geotextile 2 is connected to the wall portion H via the connecting plate 14 of the connecting member 12.

An anchor bolt 23 is provided on the rib 7 of the wall portion H in a state of protruding from the upper portion, and the anchor bolt 23 is inserted in the bolt hole 14a of the connecting plate 14 in the state of being inserted. The connecting member 12 is fixed to the rib 7 of the wall portion H by the nut stopper 24.

When a steep slope embankment is formed using the wall-integrated geotextile of this embodiment, it is not always necessary to provide the ribs 7 on the wall H, and as shown in FIG.
The connecting member 12 may be attached in a state where the anchor portion 15 of the connecting member 12 is embedded therein, and in that case,
The connecting plate 14 of the connecting member 12 and the connecting plate 14 of the connecting member 12 attached to the fixing unit 4 of the above-described fixing unit-integrated geotextile are attached to the bolts 25 and nuts 24 with their joint surfaces in close contact with each other. The fixing section 4 connected by
May be fixed to the wall portion H.

FIG. 8 is a diagram showing a third embodiment of the present invention.

The fixing part-integrated geotextile of this embodiment has substantially the same structure as the fixing part-integrated geotextile of the second embodiment, but in the steep slope embankment of this embodiment, the anchor part of the connecting member 12 is attached to the wall H. It is attached to the connecting member 12 in a state where 15 is embedded, and the connecting plate 14 of the connecting member 12 and the connecting plate 14 of the connecting member 12 attached to the fixing unit 4 of the fixing unit integrated geotextile described above.
Are connected to each other with bolts 25 and nuts 24 in a state where their joint surfaces are in close contact with each other, and the fixing portion 4 is fixed to the wall portion H.

Further, in the fixing unit integrated geotextile of this embodiment, since fixing units 4 are provided at both ends of the geotextile 2, for example, the fixing unit 4 on the side opposite to the wall H is fixed.
Other fixing unit-integrated geotextile connecting member 12 can be appropriately connected to the connecting member 12. When a plurality of fixing unit-integrated geotextiles are connected in this way, not only the area of the embankment to be reinforced is expanded, but also each fixing unit 4 located in the connecting unit of each fixing unit-integrated geotextile. And since the anchoring portion 4 located at the rightmost end in FIG. 8 acts as an anchor in the embankment, the supporting force of the wall H supporting the wall H against the earth pressure of the embankment to the rear embankment jumps. In addition, the supporting force is dispersed and applied to the plurality of fixing portions 4, so that the tensile load applied to each geotextile 2 is reduced and damage to each geotextile 2 is prevented. As shown in FIG. 8, the fixing unit 4 located at the right end of the drawing is
Since it is not necessary to connect another fixing unit integrated geotextile, the connecting member 12 is not provided.

9 and 10 are views showing a fourth embodiment of the present invention.

In the fixing unit integrated geotextile of this embodiment, as shown in FIG. 9, three anchor portions 15 are welded to the connecting plate 14 in a substantially fan-shaped manner with the intervals widened, and each anchor portion 15 is formed.
The end portion of the geotextile 2 and the entire three anchor portions 15 and a part of the connecting plate 14 are embedded in the fixing portion 4 in a state in which the geotextile 2 is hooked on the bent portion of the tip.

Then, as shown in FIG. 10, the steep slope embankment using this fixing part integrated geotextile fixes the connecting plate 14 of the fixing part 4 to the anchor bolts 23 attached to the ribs 7 of the wall part H by nuts 24. By doing so, the fixing portion 4 is fixed to the rib 7 of the wall portion H.

11 and 12 are views showing a fifth embodiment of the present invention.

In the fixing unit integrated geotextile of this embodiment, the accretion portion 15 partially embedded in the fixing unit 4 and attached
The right side screw 26 (see FIG. 12) is cut on the protruding portion of the wall portion H side of FIG.

In the steep slope embankment using the fixing part integrated geotextile, the insert nut 27 is embedded in the wall portion H with the axial direction of the insert nut 27 facing the thickness direction of the wall portion H. Left screw 28 (left side in the figure) and right screw 29 (right side in the figure) are respectively cut in the left
The right-hand screw 29 of and the right-hand screw 26 of the anchor part 15 above are the couplers.
31 is screwed in from both ends, whereby the fixing portion 4 is connected to the wall portion H via the coupler 31, and by further rotating the coupler 31 about the axis,
The position of the fixing portion 4 from the wall portion H can be adjusted.

In each of these embodiments, the wall portion H is constructed by cast-in-place concrete, but the wall portion H is not limited to cast-in-place concrete, and the wall portion H may be constructed by assembling a wall unit made of pre-cast concrete. Well, even in that case, by using the ribs extending in the horizontal direction at the upper and lower end portions of the wall surface unit and at other positions, and various connecting members provided on the embankment inner side wall surface other than the rib, Various excellent effects of the invention can be exhibited.

Further, in each of these embodiments, the single geotextile 2 is used.
Is laid in a horizontal state in the embankment, but it is not necessarily limited to the above-mentioned embodiment. For example, a double or triple geotextile 2 may be adopted, or It does not matter if the geotextile 2 is laid with a slope so that the rear side becomes lower.

It is desirable from the standpoint of durability that the metal fittings exposed in the embankment be anticorrosive.

[Advantages of the Invention] According to the fixing portion integrated geotextile of the present invention, the geotextile and the fixing portion are integrally formed in a state where the end portion of the geotextile is embedded in the fixing portion made of precast concrete. Therefore, it is not necessary to cast concrete or soil mortar etc. in place to form the anchoring part when forming the embankment, and even when creating a steep slope embankment with a concrete wall that stands almost vertically, By fixing the fixing part that is integrally provided on the end of the geotextile embedded in the wall on the rib on the inside of the embankment of the wall, the end of the geotextile is fixed to the wall of the embankment. It can be easily fixed on. For this reason, not only can the walls of the embankment be erected substantially vertically to make effective use of the limited site, but also the walls can be supported by geotextiles to prevent the embankment from collapsing to the outside. Excellent stability is secured over a long period of time, and such steep slope embankment can be constructed in a short period of time.

In addition, according to the steep slope embankment of the present invention, since it has the concrete wall portion which is erected at the end of the embankment, it is possible to effectively utilize the limited site without taking up a lot of the site of the embankment. Since the sandbag or the like is not used unlike the wall portion of the conventional embankment, the construction can be simplified and the construction period can be shortened. Moreover, since the fixing part that is integrally provided at the end of the geotextile embedded in the embankment is fixed on the rib on the inside embankment side of the wall, it is fixed. The wall is kept upright with pull-out resistance preventing collapse of the embankment to the outside, which ensures excellent stability over a long period regardless of the height of the embankment. The Rukoto.

According to another fixing part-integrated geotextile of the present invention, the fixing part made of precast concrete that is integrated with the geotextile in a state where the end part of the geotextile is embedded is connected to the embankment wall. Since the connecting member is partly embedded and is provided so as to project to the side opposite to the geotextile, it is not necessary to form the fixing part by cast-in-place with soil mortar etc. at the time of embankment construction, and it was set up almost vertically Even when a steep slope embankment having a concrete wall is created, the anchor portion integrally provided at the end of the geotextile embedded in the embankment is connected to the wall through the connecting member. By doing so, the end of the geotextile can be easily fixed to the wall of the embankment. Therefore, not only can the walls of the embankment be erected substantially vertically to make effective use of the limited site, but also the walls can be supported by geotextiles to prevent the embankment from collapsing to the outside. Excellent stability is secured over a long period of time, and such steep slope embankment can be constructed in a short period of time.

Further, according to another steep slope embankment of the present invention, since it has a concrete wall portion that is erected at the end of the embankment, it is possible to effectively utilize the limited site without taking up many sites for the embankment. Moreover, unlike the conventional embankment walls, sandbags and the like are not used, so the construction is simplified and the construction period can be shortened. In addition, since the fixing part that is integrally provided at the end of the geotextile embedded in the embankment is connected to the wall via the connecting member, the geotextile pulls out to the outside of the embankment. The wall is kept upright with the collapse of the
This will ensure excellent stability over the long term regardless of the height of the embankment.

[Brief description of drawings]

1 to 3 are views showing a first embodiment of the present invention. FIG. 1 is a schematic structural diagram of a fixing unit-integrated geotextile, and FIG. 2 uses this fixing unit-integrated geotextile. Fig. 3 is a schematic configuration diagram of the steep slope embankment, and Fig. 3 is a detailed cross-sectional view of a main part of the steep slope embankment. 4 to 7 show
FIG. 4 is a view showing a second embodiment of the present invention, FIG. 4 is a schematic configuration diagram of a fixing part-integrated geotextile, FIG. 5 is an explanatory view for explaining a manufacturing method of this fixing part-integrated geotextile, and FIG. Fig. 7 is a schematic configuration diagram of a steep slope embankment using the identification landing piece integrated geotextile, and Fig. 7 is a detailed cross-sectional view of a main part of another steep slope embankment using the identification landing piece integrated geotextile. FIG. 8 is a diagram showing a third embodiment of the present invention, and is a schematic configuration diagram of a steep slope embankment using a fixing unit-integrated geotextile. 9 and 10 are views showing a fourth embodiment of the present invention, wherein FIG. 9 is a plan sectional view of a fixing unit-integrated geotextile, and FIG. 10 is a rapid sectional view using this fixing unit-integrated geotextile. It is a detailed sectional view of the principal part of the slope embankment. FIG. 11 and FIG. 12 are views showing a fifth embodiment of the present invention, and are detailed cross-sectional views of a main part of a steep slope embankment using a fixing part-integrated geotextile, and FIG. 12 uses a coupler. It is a detailed sectional view of a connecting structure. FIG. 13 is a schematic configuration diagram showing a wall structure of a conventional embankment. L ... Ground, M ... Embankment, H ... Wall, 2 ... Geotextile, 3 ... Embankment material, 4 ... Anchoring part, 5 ... Weld mesh, 6 ... Sleeve tube, 6a ... Through hole , 7 ... rib, 8 ... anchor bolt, 9 ... nut, 10 ... notch, 11 ... base.

Claims (4)

[Claims] 1. A geotextile which is laid in a substantially horizontal state in the embankment, and a precast concrete fixing part which is fixed to a wall portion of the embankment, and an end portion of the geotextile is embedded in the fixing part. In the state, the geotextile and the fixing unit are integrally configured, and the fixing unit integrated geotextile is characterized. 2. In a steep slope embankment using the fixing part integrated geotextile according to claim 1, standing upright at the end of the embankment,
In addition, it has a concrete wall part on the inside of the embankment with horizontally extending ribs, and the geotextile is laid in a substantially horizontal state in the embankment behind it, and the end of this geotextile is A steep slope embankment characterized in that a fixing portion integrally provided in the portion is fixed while being placed on the rib. 3. The fixing unit-integrated geotextile according to claim 1, wherein a connecting member that is connected to the wall of the embankment is partially embedded in the fixing unit and is provided so as to project to the side opposite to the geotextile. Geotextile with integrated fixing section, which is characterized by that. 4. A steep slope embankment using the fixing part integrated geotextile according to claim 3, which has a concrete wall part standing upright at the end of the embankment and is substantially horizontal in the embankment. A steep embankment characterized in that a geotextile is laid, and a fixing portion integrally provided at an end portion of the geotextile is connected to the wall portion via a connecting member thereof.