KR20080090718A - Construction method of eco-friendly vegetation retaining soil retaining wall - Google Patents

Abstract

The present invention is to solve the problems of the existing concrete block reinforcement earth retaining wall is a construction method of a new reinforcement earth retaining wall structure to allow the vegetation to be protected directly to the reinforcement soil instead of the existing concrete block to protect the front surface of the reinforcement soil by the approach. .

By allowing the vegetation of wood and grass mains directly to the soil of reinforcement soil, it is eco-friendly and protects the entire surface of the reinforcement soil by its working, and also it can be absorbed flexibly even to some degree of uneven settlement. In addition, the construction is easy and efficient because the front protection of reinforcement soil is constructed at the same time by the filling step.

To this end, using the tension material used in the reinforcement body is configured a tension pocket type structure that can act as a front protection. The tension pocket type structure consists of an upper surface portion, a surface portion and a lower surface portion, which is a wire mesh mat having a diamond shape. Since the surface portion of the tension member pocket structure acts as a reference surface of the fill slope, the rotation is free at both folded portions of the surface portion. The vegetation mat and the nonwoven fabric are attached to the surface part. Diamond-shaped wire mesh mats, vegetation mats, and nonwoven fabrics are in contact with soil of reinforcement soils, so it is easy to germinate, grow, and work on grasses.

Diamond-shaped wire mesh mat is a soft material, so it is excellent in seismic resistance as well as absorption ability for small uneven settlement. It is a useful invention that the slope construction of the fill slope is easily constructed by the surface portion of the tension pocket type structure.

Description

Method for constructing eco-friendly retaining wall of grassing a plant

1 is a cross-sectional perspective view of an environmentally friendly vegetation-reinforced soil retaining wall constructed by the construction method of the present invention

Figure 2 is a perspective view of the tension member pocket structure of the present invention

3A is an enlarged view of section “A” of FIG.

Figure 3b "B" cross section enlarged view of Figure 1

Figure 4a is an exploded view showing a state connecting the lower surface portion and the wire mesh mat of the tension member pocket structure of the present invention

Figure 4b is an exploded view showing a state connecting the lower surface portion and the geogrid of the tension member pocket structure of the present invention

Figure 5 Another Embodiment of Figure 1

The present invention relates to the construction method of environmentally friendly vegetation-reinforced soil retaining wall. Especially, the environment-friendly vegetation which protects the entire retaining wall while avoiding the conventional method of protecting the front surface of the reinforced soil with concrete panels, steel plates and concrete blocks. It relates to the construction method of reinforcement soil retaining wall.

More specifically, the environmentally friendly vegetation reinforcement soil, which allows the vegetation to be directly attached to the reinforcement soil, while protecting the front surface of the reinforcement soil by using the tension member of the reinforcement soil, unlike the conventional method of protecting the front surface of the reinforcement soil with a separate face plate. It relates to a construction method of a retaining wall.

Reinforced soil retaining walls generally consist of reinforced earth bodies and faceplates. The faceplate is installed in front of the reinforced soil to protect the reinforced soil. Usually the front plate is used concrete panels, iron plates, concrete blocks and the like.

Reinforced soil is a fill layer composed of a tension member and a filling and compaction thereon. Since the tensile material is installed at regular intervals, the fill layer is formed in stages. The thickness of the fill layer formed in stages is generally 20 ~ 30cm

As such, the reinforced soil retaining wall is a retaining wall in which the front plate, the tension member, and the compacted fill layer are repeatedly formed step by step. The reinforced earth body thus formed is a structurally stable structure.

However, even if the reinforced soil is structurally stable, the soil displayed on the front of the reinforced soil must be protected from rainwater. If this is not protected, it will penetrate into the eroded and compacted soil layer, reducing the friction between the tension member and the compacted soil, making the soil layer weak. It is the faceplate that protects the reinforced soil.

As such, the reinforced soil is a structure supported by the interaction between the tension member and the compacted fill layer. Reinforced soil and face plate are collectively called reinforcement soil retaining wall. In the present invention, since the front portion is protected by the tension member pocket structure using the tension member of the reinforcement soil, this will be referred to as reinforcement soil retaining wall.

Typically the faceplate is constructed from concrete blocks.

The concrete block is only to protect the front of the reinforced earth, but there is no structural dynamics of the structure.

The concrete block is a rigid material and is a member that blocks the soil of the reinforced soil from being exposed to the outside.

Since the concrete block is a stiff material, there is a problem that the structural block or structural soil is accompanied with cracks even in a small ground subsidence due to cracks.

In addition, the concrete block is a member that protects the reinforced soil from rainwater, so the soil of the reinforced soil is not exposed outside the concrete block.

Since soil of reinforcement soil cannot be exposed to the outside, vegetation of wood and grass main stream is impossible directly on reinforcement soil.

Thus, since the soil of the reinforcement soil is not exposed to the outside by the concrete block, it is impossible to vegetate wood and grass mainstream directly on the reinforcement soil.

Although the concrete block is effective in protecting the front surface of the reinforced soil, there is a problem in that it cannot be directly vegetated on the reinforced soil.

This is especially true given the construction of environmentally friendly retaining wall structures.

The present invention is to solve the problem of the existing reinforcement soil retaining wall using the front plate as a concrete block, while a new reinforcement soil retaining wall structure that allows the vegetation to be protected directly to the reinforced soil instead of the concrete block to protect the front surface of the reinforcement soil I would like to make. By allowing the vegetation of wood and grass mains directly to the soil of reinforcement soil, it is eco-friendly and protects the entire surface of the reinforcement soil by its working, and also it can be absorbed flexibly even to some degree of uneven settlement.

The first object of the present invention is to form a tension pocket type structure that can act as a front protection like a concrete block instead of a concrete block using the tension material used in the reinforcement soil, and by forming a tension material pocket structure, a separate protective block There is no need for this, and the second purpose is to protect the entire surface of the reinforced soil by the rooting while being able to vegetate wood and grass mainstream directly on the soil of the reinforced soil. The third purpose is to make reinforcement soil retaining wall step-by-step construction easy and efficient by laying out the tensioning material and constructing the compacted fill layer. The fourth purpose is to make slope construction of the slope slope easier. There is this.

The most essential configuration for achieving the object of this invention is a tension pocket type structure.

First, the tension member pocket structure 10 will be described in detail.

형태 Shape and material of tension member pocket structure (10)

Tensile material pocket structure 10 is a three-sided "c" shape. Tensile material pocket structure 10 is a structure for holding the reinforcement soil firmly in the inside and the structure to allow the vegetation directly to the retained soil. The tension member of the tension member pocket structure 10 is a wire mesh mat 32 in a diamond shape. The wire mesh mat 32 has a diamond-shaped eye. Vegetation is possible directly in the soil of reinforcement soil through the snow. Wire mesh mat 32 was made of galvanized steel wire. In order to improve the useful life of the wire mesh mat 32 uses a PVC coated galvanized steel wire.

The wire mesh mat 32 formed as described above is a member having flexibility compared to a rebar network made of a deformed steel having a large diameter. When the wire mesh mat 32 is unevenly sedimented or subjected to an earthquake load, the diamond shape has flexibility in dealing with uneven seismicity and earthquake because shrinkage and expansion occur simultaneously.

The location where the tension member pocket structure 10 is installed is the front of the reinforcement soil body 20. The tension member pocket structure 10 is connected with the reinforcement soil tension member 30. The reinforcement soil tension member 30 connected with the tension member pocket structure 10 may be a wire mesh mat 32, a geogrid 34, or a geotextile. This is because the tension member pocket structure 10 is easily connected to the reinforcement soil tension member 30 as described above. Needless to say, the selection is made based on consideration of economical efficiency, structural dynamic stability, and ease of construction.

The “c” shaped tension member pocket structure 10 is formed of a folded portion 1 (14) and a folded portion 2 (15), and is a rotational structure free to rotate at the folded portion 1 (14) and the folded portion 2 (15). . The fold 1 (14) and the fold 2 (15) are connected by a ring or a ring.

Because of the freedom of rotation, the “c” shape can be unfolded in a horizontal plane.

The tension pocket structure 10 consists of three sides.

Hereinafter, three surfaces of the letter “c” are referred to as “top portion 11” and “bottom portion 13”, and the surface located in the middle thereof is called “surface portion 12”. Fold portions 1 (14) and fold portions 2 (15) are formed at both ends of the “surface portion 12”. Free rotation around both ends.

In particular, the middle part is called the “surface part 12” because the “surface part 12” is located on the surface of the fill layer 24. The height of the “surface portion 12” is preferably the height of the stepped fill layer 24. The length of the “top portion 11” and the “bottom portion 13” may be the same, or the length of the “bottom portion 13” may be slightly larger. The reinforcement soil tension member 30 is connected to the horizontal surface of the "upper surface part 11" and the "lower surface part 13".

⒝ Tensile pocket structure 10 should be self-supporting member.

The tension member pocket structure 10 has a lower surface portion 13 corresponding to the lower surface of the fill layer 24, and an upper surface portion 11 coincides with the upper surface of the fill layer 24, while the surface portion 12 is filled. The structure is installed to coincide with the reference inclined surface 22 of the layer 24.

Assuming that the tension pocket structure 10 is made of geogrid 34, the surface portion 12 cannot coincide with the reference slope 22 of the fill layer 24. This is because the material of the geogrid 34 cannot match the surface portion 12. It is a member capable of being self-supporting in that the surface portion 12 of the tension member pocket structure 10 can exactly match the reference inclined surface 22 of the fill layer 24.

Tensile material pocket structure 10 is a structure that plays a protective role, such as concrete blocks while serving as a reference of the fill slope 22 through the self-reliance using the reinforcement soil tension member (30).

The geogrid 34 made of synthetic resin is not suitable as the tension member pocket structure 10 because it is difficult to stand on its own.

The self-supporting reinforcement soil tension member 30 is not suitable for the tension member pocket structure 10 of the present invention. That is, without the premise that the rotation of the folded portion is free, the tension member pocket structure 10 described herein is not. If the rotation of the surface portion 12 of the tension member pocket structure 10 is not free, it is because the adjustment work to match the surface portion 12 to the reference of the fill slope 22 is not easy.

⒞ Connection between tension member pocket structure (10) and reinforced earth tension member (30)

The tension member pocket structure 10 is connected to the reinforcement soil tension member 30 in the horizontal plane and another tension member pocket structure 10 in the vertical plane. The reinforcement soil tension member 30 may be any of the wire mesh mat 32, the geogrid 34, or the geotextile.

Since another tension member pocket structure 10 is installed on the vertical plane of the tension member pocket structure 10 and the reinforcement soil tension member 30 is connected on the horizontal plane, this will be described in more detail.

On the vertical surface of the tension member pocket structure 10, the "top part 11" of the first-stage tension member pocket structure 10 and the "bottom part 13" of the second-stage tension member pocket structure 10 are in contact with each other.

Although the first stage "top part 11" and the second stage "bottom part 13" are in contact with each other, the upper and lower parts 11 and 13 are overlapped based on the reinforcement soil tension member 30 connected in a horizontal plane. This is where. Then, the reinforcement soil tension member 30 is inserted and connected between the superimposed between them is efficient and preferable in connection strength or ease of connection. However, the insertion connection is not necessarily efficient. If it is suitable for the construction situation and the construction is easy, it is possible even if it is not inserted.

⒟ Tension material pocket structure (10) and vegetation relationship

Since the tension pocket type structure 10 is made of a wire mesh mat 32, it is a very excellent member for the reinforcement soil as a tension member. In addition, the tension pocket type structure (10) is a structure that holds the reinforced soil soil in the inside and is a structure that allows the vegetation directly to the retained soil from the outside.

The diamond form of the wire mesh mat 32 enables vegetation.

The vegetation mat 17 and the nonwoven fabric 18 are provided in the surface part 12 of the tension material pocket structure 10. The nonwoven fabric 18 is on the reinforcement soil side and the vegetation mat 17 is installed outward. The nonwoven fabric 18 is a member for retaining the reinforcement of the reinforcement soil, and the vegetation mat 17 is a member for assisting the germination and growth of the herbaceous plants. Diamond-type wire mesh mat 32 and vegetation mat 17 and nonwoven fabric 18 are not only suitable for germination and growth, but also have an advantageous structure for rooting of herbaceous roots directly to reinforcement soil.

The construction method of the environmentally-friendly vegetation-reinforced soil retaining wall of this invention is demonstrated.

In order to form the first fill layer 24, the first tension member pocket structure 10 is installed on the ground ground stopped horizontally, and the surface portion 12 is made to meet the standard of the fill slope 22. The part 13 is made to coincide with the horizontal plane of the foundation ground. The lower surface portion 13 of the first tension member pocket structure 10 is connected to the reinforcement soil tension member 30. The reinforcement soil tension member 30 may be any of the wire mesh mat 32, the geogrid 34, or the geotextile. The inclined angle is maintained by the inclined support member 16 of the surface portion 12 that meets the standards of the fill inclined surface 22. The inclined support member 16 supports the surface portion 12 while being fixed to the lower surface portion 13. The connection of the support bevel material 16 is usually made by the fixed wire 19. The vegetation mat 17 and the nonwoven fabric 18 are attached to the surface portion 12 of the first tension member pocket structure 10.

Since the fill layer 24 is compacted together with the fill, the upper surface portion 11 of the first tension member pocket structure 10 should be outside the fill layer 24 until the fill layer 24 is completed. In order to do so, the upper surface portion 11 of the first tension member pocket structure 10 should be rotated outwardly around the fold portion 1 14 to face toward the surface portion 12. It is preferable to coincide with the surface portion 12.

   As described above, the lower surface portion 13 of the first tension member pocket structure 10 and the upper surface portion 11 of the first tension member pocket structure 10 are deposited and compacted thereon while being connected to the reinforcement soil tension member 30. Fill layer 24 is formed so as to be in the horizontal plane.

The upper surface portion 11 of the first tension member pocket structure 10 is rotated by the fill layer 24 to coincide with the fill layer 24. The upper surface portion 11 and the reinforcement soil tension member 30 of the first tension member pocket structure 10 are connected. Or after installing the second tension member pocket structure 10, and then between the top 11 of the first tension member pocket structure 10 and the bottom 13 of the second tension member pocket structure 10. It may be connected by inserting the reinforcement soil tension member 30.

In order to form the second fill layer 24, the upper surface portion 11 of the first tension member pocket structure 10 coincides with the lower surface portion 13 of the second tension member pocket structure 10. Since the surface portion 12 of the first tension member pocket structure 10 and the surface portion 12 of the second tension member pocket structure 10 are inclined reference planes, the inclination angles are the same.

In this case, it is most stable to insert the reinforcement soil tension member between the upper surface portion 11 of the first tension member pocket structure 10 and the lower surface portion 13 of the second tension member pocket structure. The reinforcement soil tension member 30 is inserted between the upper surface portion 11 of the first tension member pocket structure 10 and the lower surface portion 13 of the second tension member pocket structure 10 and is fixed by the wire 19. Connect and fasten up and down.

The surface portion 12 of the second tension member pocket structure 10 is supported by the inclined support member 16 in a state in which the inclined reference plane is coincident with the inclined reference plane.

The subsequent construction process repeats the construction process that was performed to form the first fill layer 24.

This will be described in detail with reference to the drawings.

In installing reinforcement soil retaining wall and constructing reinforcement soil retaining wall made of compacted soil

하면 matching the lower surface portion 13 of the first tension member pocket structure 10 to the foundation ground, and then connecting the reinforcement soil tension member 30 to the lower surface portion 13;

경사 After attaching the vegetation mat 17 and the nonwoven fabric 18 to the surface portion 12 of the first tension member pocket structure 10, the inclined support member fixed to the lower surface 13 and the surface portion 12 Conforming the surface portion 12 to the fill slope standard by (16)

(B) pivoting the top 11 of the first tension member pocket structure 10 outwardly about the incision 1 14 to match the surface 12;

성 filling the first fill layer 24 with the top surface portion 11 of the first tension member pocket structure 10 compacted

(B) rotating the upper surface portion 11 of the first tension member pocket structure 10 inwardly about the incision portion 1 14 to coincide with the first fill layer 24;

(B) matching the lower surface portion 13 of the second tension member pocket structure 10 to the upper surface portion 11 of the first tension member pocket structure 10 and connecting them to each other.

단계 repeating steps ⒡ through 하는 to form second, third,... Fill layers 24

It is a construction method of environmentally friendly vegetation-reinforced soil retaining wall.

In addition, a geogrid 34, which is a reinforced earth tension member 30, is inserted between an upper surface portion 11 of the first tension member pocket structure 10 and a lower surface portion 13 of the second tension member pocket structure 10. A method of constructing an environmentally friendly vegetation-reinforced soil retaining wall, comprising the step of connecting and fixing the portion 11 and the lower surface portion 13 to each other.

The drainage channel 40 may be installed at a predetermined distance from the front of the reinforced soil body. The drainage path 40 consists of a gravel layer 42.

Effects of the configuration of the present invention are as follows.

Unlike the existing method of protecting the front of the reinforced earth with a separate concrete block, the vegetation of the herbaceous vegetation is possible on the front of the reinforced earth by forming the pocket of tension material using the reinforced earth tension material. By working, the front of the reinforced earth was firmly protected, enabling the construction of environment-friendly retaining walls.

In addition, since the tensile member made of diamond-shaped wire mesh mat is a soft member, unlike the rigid materials such as concrete protection blocks and rebars, the self-absorbing force is also very good to absorb the differential settlement, so it is structurally stable and suitable for seismic design.

Tensile material pocket structure is very suitable for vegetation along with vegetation mats and non-woven fabrics, and the roots of herbaceous plants can be rooted directly to reinforced earth.

As the tension member is made of diamond type node connection method using ductile galvanized steel wire, the earth retaining body and organic behavior are induced by ductility, so the retaining wall retaining wall structure is structurally stable.

Since the tension pocket type structure is constructed in parallel with the step-by-step filling, there is no need for separate vertical and horizontal vertical work, so the construction is efficient because the work progress is fast.

Since the vegetation of wood and grass mainstream is possible directly on the soil of reinforcement soil, it is not only environmentally friendly but also very useful for front protection of reinforcement soil due to work.

Claims (4)

In installing the reinforcement soil retaining wall which consists of the compaction filling step by step 하면 matching the lower surface portion 13 of the first tension member pocket structure 10 to the foundation ground, and then connecting the reinforcement soil tension member 30 to the lower surface portion 13; 경사 After attaching the vegetation mat 17 and the nonwoven fabric 18 to the surface portion 12 of the first tension member pocket structure 10, the inclined support member fixed to the lower surface 13 and the surface portion 12 Conforming the surface portion 12 to the fill slope standard by (16) (B) pivoting the top 11 of the first tension member pocket structure 10 outwardly about the incision 1 14 to match the surface 12; 성 filling the first fill layer 24 with the top surface portion 11 of the first tension member pocket structure 10 compacted (B) rotating the upper surface portion 11 of the first tension member pocket structure 10 inwardly about the incision portion 1 14 to coincide with the first fill layer 24; (B) matching the lower surface portion 13 of the second tension member pocket structure 10 to the upper surface portion 11 of the first tension member pocket structure 10 and connecting them to each other. 단계 repeating steps ⒡ through 하는 to form second, third,... Fill layers 24 Construction method of eco-friendly vegetation-reinforced soil retaining wall The method of claim 1 Geogrid 34, which is a reinforced earth tension member 30, is inserted between the upper surface portion 11 of the first tension member pocket structure 10 and the lower surface portion 13 of the second tension member pocket structure 10. (11) and the lower surface portion 13, the method of construction of environmentally friendly vegetation-reinforced soil retaining wall comprising the step of connecting and fixing to each other The method according to claim 1 or 2 The wire mesh mat 32 is constructed of PVC-coated galvanized steel wire, and is a method for constructing an environmentally friendly vegetation-reinforced soil retaining wall. The method according to claim 1 or 2 Construction method of environmentally friendly vegetation-reinforced soil retaining wall, characterized in that to form a gravel layer 42, drainage channel 40 in the reinforced soil body 20

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