JP2003129423A - Reinforcing filled bank and construction method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing filled bank of which the shearing resistivity is increased, and a construction method of the same. SOLUTION: Respective filling layers 11, 12, 13, etc., are provided to form a hierarchical structure, and a wall surface material is arranged on the normal end surface of each filling layer 11, 12, 13, etc. Respective sheet-shaped filling reinforcing material is connected to each wall surface material 30 in such a way that the reinforcing materials cross with each other alternately, and is buried in a filled bank 1 at every a distance in the height direction so as to cross with each other alternately.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforced embankment body using an embankment reinforcement and a construction method thereof.

[0002]

2. Description of the Related Art In an embankment body a which receives an impact such as an avalanche, a landslide, or a rockfall as shown in FIG. 8, embankment is mainly made by using locally-generated soil produced by the notch. The layer b is constructed, and the embankment reinforcement material c such as geotextile or geogrid is interposed in the embankment layer b. In order to protect the slope of the embankment, the wall material d is stacked along the slope, one end of the embankment reinforcement material c is connected to the wall material d, and the embankment reinforcement material c is laid in a plurality of upper and lower stages. Build the embankment body a.

[0003]

The soil and the embankment reinforcement c are integrated by frictional resistance, the soil is restrained by the tensile strength of the embankment reinforcement c, and the shearing force in the horizontal direction upon impact is resisted. It is a thing. However, when the embankment reinforcement c is laid parallel to the direction of the impact force, since the seam between the embankment reinforcement c and the embankment reinforcement c is weak, it receives an impact as shown by the arrow in FIG. 9 (a). Then, there is a problem that the seam of the embankment reinforcement c is sheared as shown in FIG.

[0004]

SUMMARY OF THE INVENTION The present invention has been conceived in view of the above-mentioned points, and a reinforcing embankment body having a large shear resistance in a horizontal direction and a vertical direction orthogonal thereto when an impact is applied, and a construction method thereof. The purpose is to provide. Another object of the present invention is to provide a reinforced embankment body that can simultaneously reinforce differently oriented surfaces and a method for constructing the same. Another object of the present invention is to provide a reinforced embankment body in which the laying interval of the embankment reinforcement can be easily changed, and a construction method thereof. Another object of the present invention is to provide a reinforced embankment body and a method of constructing the embankment body that can easily control the layer thickness of each embankment layer. The present invention is
It is intended to achieve at least one of the above objects.

[0005]

In order to achieve the above-mentioned object, the reinforced embankment embankment of the present invention constructs embankment layers hierarchically and interposes a sheet-shaped embankment reinforcement between each embankment layer. Then, in a reinforced embankment body constructed by connecting a wall material to the tip of the embankment reinforcement material, the embankment reinforcement material is disposed inside the reinforced embankment body body so as to intersect, and the intersected embankment reinforcement materials Is embedded at a predetermined interval in the height direction.

Further, the reinforced embankment embankment of the present invention is characterized in that the embankment reinforcement is continuously connected and buried between a pair of wall materials in a state without slack.

Further, the reinforced embankment embankment of the present invention is characterized in that it is a shock-absorbing embankment having a strike surface formed on one side along a direction intersecting with the impact action direction of the embankment. is there.

Further, the method of constructing the reinforced embankment body of the present invention is as follows:
A method of constructing a reinforced embankment body in which a wall material is installed at the slope of each embankment layer while constructing the embankment layer hierarchically and a sheet-shaped embankment reinforcement material connected to the wall material is embedded in the embankment layer to construct In one, after embedding one embankment reinforcement connected to the wall material installed on one side of the embankment body, the other embankment reinforcement connected to the wall material installed on the other side adjacent to the one side of the embankment embankment The material is arranged so as to intersect with the one embankment reinforcing material, and is embedded at a distance in the height direction from the one embankment reinforcing material.

The method of constructing the reinforced embankment body of the present invention is as follows:
It is characterized in that wall materials are installed on opposite side surfaces of the embankment body, and the embankment reinforcements respectively connected to the wall materials are buried without slack.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 of the present invention will be described below with reference to the drawings.

<A> Reinforced Embankment Embankment FIG. 1 is a perspective view of the completed embankment embankment 1. Reinforced embankment body 1 (hereinafter referred to as embankment body 1) is an embankment body constructed in the middle of the slope or at the skirt, and one side surface along the direction intersecting the impact action direction forms the receiving surface. To do. The embankment body 1 is composed of hierarchically constructed embankment layers 11, 12, 13, ...
(Hereinafter, referred to as the embankment layer 10), a sheet-shaped embankment reinforcement 20 laid between the embankment layers 10, and wall materials 30 and 31 that cover the slopes of the embankment layer 10.

<B> Embankment layer The embankment layer 10 is constructed by placing soil on the foundation ground 50.
The embankment layer 10 is constructed by laying soil for each layer, compacting it by compaction to construct each embankment layer 11, 12, 13, ..., When an external force acts, this embankment embankment. It is a structure for dispersing and supporting the whole body 1. The embankment can use locally generated soil, is easy to manufacture on site, and is economical.

<C> Embankment Reinforcing Material The embankment reinforcing material 20 is a resin or fiber net having a large tensile strength, or a sheet-like material, such as known geotextiles and geogrids. The embankment reinforcement 20 has one end on the slope side thereof connected to a horizontal portion 33 of a wall material 30 described later by a connecting pin 22 or the like, and is embedded in the embankment layer 10 stepwise in the horizontal direction.

<D> Wall material The wall materials 30 and 31 are retaining wall members that protect the slope of the embankment body 1 and prevent the collapse of the earth and sand (see FIG. 1). In this example, the case where the wall members 30 and 31 are a structure in which a rising part 32 and a horizontal part 33 are formed by bending a rectangular expanded metal, a welded wire mesh, a woven wire mesh, a perforated steel plate, etc. into a substantially L-shaped cross section As will be explained, the wall materials 30, 3
A known one can be applied to 1 (see FIG. 2). The wall members 30 and 31 of this example are provided with a reinforcing diagonal member 34 between the upright portion 32 and the horizontal portion 33.

As shown in FIG. 1, in this example, the embankment body 1
Only the bottom wall material 31 arranged along the XX direction and the top wall material 31 arranged along the YY direction.
Although the height of the upright portion 32 is set to be half the height of the other wall material 30, the wall material 30 having the same height may be used without being limited to this. When using only the wall material 30 of the same height, the embankment reinforcement material 20 is used for the upright part 3.
Place it in the middle of 2. Further, for convenience of explanation, the embankment layer 1
A is added to the wall surface members 30 and 31 arranged to face each other on one side surface (XX direction in FIG. 1) of 0, and the other side surface (FIG.
Wall members 30, 31 arranged to face each other in the Y-Y direction).
Will be described by adding B to them. Also, the wall material 30
A, A is added to the embankment reinforcement 20 connected to 31A,
The embankment reinforcement 20 connected to the wall members 30B and 31B is B
Will be described separately.

Next, a method of constructing a reinforced embankment body will be described with reference to FIGS. FIG. 3 is an explanatory view of a construction in which the embankment embankment 1 shown in FIG. 1 is cut along a section III-III, and FIG. 4 is a section IV of the embankment embankment 1 shown in FIG.
It is explanatory drawing of the construction fractured | broken along IV. Note that FIG.
And in FIG. 4, each embankment reinforcement 2 laid crosswise
Of 0A and 20B, those that are laid in the breaking direction of the embankment body 1 (left-right direction in the drawing) and that show the connection state with the wall material 30 are shown by solid lines, and the embankment body 1 A broken line indicates a line which is laid in a direction orthogonal to the breaking direction (a penetrating direction in the drawing) and which is not shown in the connection state with the wall material 30.

<A> Installation of wall material on the foundation ground A plurality of wall materials 30A are installed on the foundation ground 50 in a horizontal row along the YY direction of the embankment body 1 to be constructed. The anchor pin 35 is driven in to fix the wall material 30A to the foundation ground 50. The adjacent wall members 30A may be connected by various known connecting means. Similarly, the wall members 30A are arranged side by side in a row at a width interval of the embankment body 1 and fixed. The wall members 30A and 30A are installed to face each other in the XX direction (FIG. 3 (a)). By the same procedure, the wall material 3
1B and 31B are installed side by side in a row, and the embankment body 1 is Y-
They are installed facing each other in the Y direction (Fig. 4 (a)).

<B> Laying Embankment Reinforcing Material While laying the embankment reinforcing material 20A on the foundation ground 50,
Wall material 30A, 30 with the ends of the embankment reinforcement 20A facing each other
It is connected to A by a connecting pin 22 (FIG. 3 (a)).

<C> Construction of First-tier Embankment Layer As shown in FIG. 3 (a), the first embankment layer 11 is constructed by embanking the embankment reinforcement 20A to a predetermined height. The embankment layer 11 of the first step is the standing portion 32 of the wall material 31B.
Up to the height (half the height of the standing portion 32 of the wall material 30A)
And In the case of the present invention, since the layer thickness is small, the embankment layer 11 can be constructed with a small rolling pressure.

<D> Construction of Second-tier Embankment Layer Wall material 30B is installed on the first-tier embankment layer 11 (FIG. 4 (b)). In this case, the standing portion 32 of the wall material 30B is installed so as to be continuous with the standing portion 32 of the wall material 31B installed in the first stage. As in this example, the standing portion 32 of the wall material 31B
When the height of the wall material 30B is set to half of that of the wall material 30B, the wall material 3 is directly placed on the wall material 31B installed at the lowest stage.
It is convenient because the wall materials 30A installed on the adjacent side surfaces can be offset by a half pitch from each other simply by stacking 0B. Drive the anchor pin 35,
The wall material 30B is fixed to the embankment layer 11. Next, the ends of the embankment reinforcement 20B are connected to the wall members 30B, 30B by connecting pins 22, and the embankment reinforcement 20A connected between the wall members 30A is laid so as to intersect (FIG. 3 (b), FIG. b)). Embankment is performed up to the height of the upright portion 32 of the wall material 30A, and compaction is performed.
The second embankment layer 12 is constructed by compaction (FIG. 3 (b)).
As shown in FIG. 4B, the embankment layer 12 is half the height of the standing portion 32 of the wall material 30B.

<E> Construction of Embankment Layer on Third and Later Stages The wall material 30A is installed on the second-stage embankment layer 12 so that the upright portions 32 are continuous (FIG. 3 (c)). The anchor pin 35 is driven in to fix the wall material 30A to the embankment layer 12. Next, attach the end of the embankment reinforcement 20A to the wall materials 30A, 30
It is connected to A by a connecting pin 22, and embankment reinforcement 20A is further laid so as to intersect (FIGS. 3 (c) and 4 (c)). Wall material 30B
The embankment is performed up to the height of the upright portion 32, the compaction is performed, the compaction is performed, and the third embankment layer 13 is constructed (FIG. 4C). Similarly to the above, the embankment layer 13 is half the height of the standing portion 32 of the wall material 30A (FIG. 3 (c)).

Thereafter, the same procedure is performed to install the wall members 30A and 30B alternately, and the wall members 30A and 20A are crossed to cross each other.
20B is laid and the embankment layer 10 is sequentially constructed. In addition, the uppermost layer is the wall material 31A, 31 along the YY direction.
A is installed and the heights of the rising portions 32 are made to coincide with each other, and the embankment body 1
Flatten the top surface of. In the case of this example, the height of the wall material 31B installed at the bottom is set to half of the wall material 30B,
The embankment reinforcements 20A, 20B are spaced from each other by a half pitch between the wall materials 30A installed on the adjacent side surfaces.
However, when the wall material 30 having the same height is used, the embankment reinforcements 20A and 20B are laid in the middle of the upright portion 32 while using a connecting fitting or the like.

Thus, the wall material 30A installed on one side surface facing each other and the wall material 30B installed on the other side surface adjacent thereto are shifted by a half pitch to construct the embankment layer 10 with a large number of layers. At the same time, the embankment reinforcement 2 is provided between the wall materials 30A and 30B, which are installed by shifting them by a half pitch.
Embankment reinforcement 20 by connecting 0A and 20B
It is possible to embed A and 20B in the embankment body 1 by alternately intersecting them at intervals. What is important in the present invention is that embankment reinforcements 20 are arranged inside the embankment body 1 so as to intersect with each other, and the embankment reinforcements 20 are embedded at intervals in the height direction. By embedding the embankment reinforcements 20A and 20B in the embankment body 1 by intersecting them, the embankment reinforcements 20 intersecting each other
The upper and lower surfaces of A and 20B act as friction surfaces with the embankment, and the surfaces of the embankment body 1 in different directions can be equally and effectively reinforced. Further, by embedding the embankment reinforcements 20A and 20B in the embankment embankment 1 so as to intersect with each other, the soil and the embankment reinforcements 20A and 20B are integrated by friction resistance, and the embankment reinforcements 20A and 20B have high strength and low elongation. The soil is restrained by the degree characteristic, and the embankment reinforcement 20B resists the arc slip that causes collapse inside the embankment as shown in FIG. 5 (a), and the arc slip that causes collapse inside the embankment as shown in FIG. 5 (b). The embankment reinforcement material 20A resists against. Further, for horizontal shearing force as shown in FIG. 5 (c), embankment reinforcements 20A and 20
Resist with B. Further, the embankment reinforcement member 20B resists the shearing force in the vertical direction to prevent shear failure of the bank as shown in FIG. 9 (b). As described above, according to the present invention, a safe embankment layer 10 can be constructed by embedding the embankment reinforcements 20 inside the embankment body 1 so as to intersect with each other in the height direction at intervals. Further, since the embankment layer 10 is constructed by alternately shifting the wall members 30A and 30B by a half pitch, the layer thickness is small, and it is not necessary to perform the rolling operation in several times as in the conventional method, and the rolling operation is performed. In this case, the layer thickness control becomes easy. In addition, a vegetation sheet having vegetation seeds attached may be attached to the peripheral side surface of the embankment body 1, or a vegetation soil material may be sprayed on the wire netting of the wall materials 30 and 31 for vegetation.

[0024]

Second Embodiment of the Invention Above, the wall members 30 facing each other are described.
The case of connecting one embankment reinforcing member 20A, 20B between A and 30A, 30B and 30B, 31B and 31B has been described, but it is divided into the respective wall members 30 facing each other as described in the present embodiment. The embankment reinforcements 20A and 20B may be laid by connecting one end with a connecting pin 22 and connecting the other ends while pulling each other (see FIG. 6). When laying the embankment reinforcements 20A and 20A, 20B and 20B, both embankment reinforcements 20A and 20A, 20B and 20B are pulled by human power or the like until they are not slackened.
And 20A, 20B and 20B overlap the coil material 23
Connect with a connecting tool such as. Embankment reinforcements 20A and 20A,
By applying tension to 20B and 20B, the overlaid load is dispersed, local uneven settlement is prevented, and further the stability of the embankment body 1 is enhanced by the shear resistance. Further, the embankment reinforcements 20A and 20B effectively suppress the displacement of the wall material 30 due to the earth pressure, and the shape stability of the entire embankment body 1 is enhanced.

[0025]

Third Embodiment In the first embodiment, the wall material 3 is used.
Although 0 and 31 are made of expanded metal having a substantially L-shaped cross section, the wall members 30 and 31 may be made of concrete slab (see FIG. 7). FIG. 6 shows a part of a state in which the embankment reinforcement 20 is arranged so as to cross the wall members 30A and 30B. A connecting metal fitting for connecting the embankment reinforcement 20 is attached to the inside of the concrete slab. The concrete wall materials 30 and 31 of this example may be cast on site or precast.

[0026]

[Embodiment 4] The wall members 30A and 30B are not installed facing each other, but only one of them is installed, one end of the embankment reinforcement 20 is connected to this, and the other end is laid on the embankment layer 10. You may leave and leave and embed it in the embankment body 1 crossing at intervals.

[0027]

Since the reinforced embankment body and its construction method of the present invention are as described above, the following effects can be obtained. <B> Reinforcing embankment By connecting the embankment reinforcement to the wall material installed in the height direction around the embankment, it is possible to increase the number of embankment reinforcements and increase the horizontal shear resistance. . <B> Since embankment reinforcements were embedded inside the embankment body at intervals in the height direction, the upper and lower surfaces of each intersecting embankment reinforcement function as a friction surface with the embankment. Surfaces having different body directions can be reinforced equally and effectively. <C> By changing the height of some wall materials, the wall materials can be installed by shifting them in the height direction. Most of the wall materials have the same dimensions, but the wall materials with different dimensions are used. As in the same way as before, it is possible to easily change the laying interval of the embankment reinforcement, and it is possible to embed the embankment reinforcement at an optimum position in consideration of the slope slope and sliding surface of the reinforcement embankment. <D> The thickness of the embankment layer can be easily and easily controlled, and the workability and the economical efficiency can be significantly improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a completed reinforced embankment body.

FIG. 2 is a perspective view of a wall material.

FIG. 3 is a construction explanatory diagram when a section is taken along the line AA of FIG.

FIG. 4 is a construction explanatory diagram when a section is taken along line BB in FIG. 1;

FIG. 5 is an explanatory view showing a force applied to the reinforced embankment body.

FIG. 6 is a partial cross-sectional view of a reinforced embankment body.

FIG. 7 is a cross-sectional view showing another embodiment.

FIG. 8 is an explanatory diagram showing a conventional embankment body.

FIG. 9 is an explanatory view showing a force applied to a conventional embankment body.

[Explanation of symbols]

1 ... Reinforced embankment body 10 ... Embankment layer 20 ... Embankment reinforcement 22..Connecting pins 23 .. Coil material 30 ... Wall material 50 ... Basic ground

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shoichi Inoue             5 155, Omi, Niigata City, Niigata Prefecture             Within Rotek Engineering (72) Inventor Yoshihiro Yokota             38-3 Maeda, Haru-cho, Sakai-gun, Fukui Prefecture             Fiber Co., Ltd. (72) Inventor Tetsuya Kubo             38-3 Maeda, Haru-cho, Sakai-gun, Fukui Prefecture             Fiber Co., Ltd. F-term (reference) 2D001 PA05 PA06 PC03 PD05                 2D044 CA04 CA05 DB41

Claims (5)

[Claims] 1. A reinforced embankment body constructed by constructing embankment layers hierarchically, interposing sheet-shaped embankment reinforcing materials between each embankment layer, and connecting a wall material to the tip of the embankment reinforcing material. A reinforced embankment characterized in that the embankment reinforcements are arranged inside the reinforced embankment body so as to intersect with each other, and the intersected embankment reinforcements are embedded at predetermined intervals in the height direction. body. 2. The reinforced embankment body according to claim 1, wherein the embankment reinforcement material is continuously connected and buried between a pair of wall materials in a slack-free state. Bank body. 3. The reinforced embankment body according to claim 1 or 2, wherein a shock absorbing dam body is provided with a receiving surface on one side along a direction intersecting with the impact acting direction of the dam body. Reinforced embankment body, characterized by being 4. A reinforced embankment constructed by arranging a wall material at the front of each embankment layer while constructing the embankment layer hierarchically and embedding a sheet-shaped embankment reinforcement material connected to the wall material in the embankment layer. In the embankment construction method, after embedding one embankment reinforcement connected to the wall material installed on one side of the embankment embankment, connect it to the wall material installed on the other side adjacent to the one side of the embankment embankment The other embankment reinforcing material is arranged so as to intersect with the one embankment reinforcing material, and is embedded at a distance in the height direction from the one embankment reinforcing material. Construction method. 5. The method for constructing a reinforced embankment body according to claim 4, wherein wall materials are installed on opposite side surfaces of the embankment body, and the embankment reinforcement members connected to the respective wall materials are not loosened. A method of constructing a reinforced embankment embankment characterized by being buried in