KR100350625B1 - Reinforced Earth Retaining-Wall for using Sand-Bag - Google Patents

Abstract

The present invention relates to a separate reinforcement soil retaining wall using a sand bag to stabilize the soil slope by installing grid-reinforced reinforcement and sand bags in the fill body by layer, and sand bags along the front boundary of the fill part. The ground is made of sand bags and the front part of the reinforcement is fixed by the sand bags in the upper and lower layers, and the back part is buried in the backfill soil. After completing the fill body, the front wall is constructed by attaching it to the front of the sand bag, and then the fill body that forms the rear part of the retaining wall is constructed first, and then the front wall of the retaining wall is constructed later. Construction by absorbing horizontal displacement and construction errors during construction As it is not only possible to obtain a stable retaining wall structure, whereby at the same time fill body and the drainage layer to the construction and can be constructed, each batch separately to fill body and the front wall improves the workability.

Description

Reinforced Earth Retaining-Wall for using Sand-Bag}

The present invention relates to a retaining wall using a reinforcement earthwork method to stabilize the soil slope by installing a grid-like reinforcing material and sand bags in each layer during the construction work, and in particular, constructing a fill body that forms the rear part of the retaining wall first. Then, by separating and constructing the front wall of the retaining wall in a later construction method, it is possible not only to obtain the structurally stable retaining wall structure by absorbing the horizontal displacement occurrence and the construction error during construction, but also to construct the fill body and the drainage layer at the same time. The present invention relates to a segregated reinforced soil retaining wall using a sand bag that can be improved by constructing the bulk body and the front wall separately.

The reinforcement soil method puts a reinforcement made of grid-like fiber material with high tension and good friction with soil in the earthen body to suppress horizontal displacement, thereby fundamentally excluding or minimizing earth pressure generated by earth load and external force. It is being applied to retaining wall construction because it can secure stability.

Conventionally, the retaining wall to which such a reinforced soil method is applied is mainly composed of a block type reinforced soil retaining wall that constructs a front wall as a block.

As shown in Figs. 1A and 1B, the block-type reinforcement retaining wall installs one layer of reinforcement 1, stacks the front blocks 2 at a predetermined height on the reinforcement 1, and the rear part of the stacked blocks. After forming and compacting the backfilling soil (4) while forming a portion of the gravel layer (3) for drainage, the next layer of reinforcement (1) is connected to the front block (2), while the front block (2), gravel layer (3) And while repeating the layer stacking operation of stacking the backfilling soil (4) at the same time to complete the retaining wall integrating the front block and the fill body.

The block-type reinforced earth retaining wall constructed in this way exhibits some of the structural advantages of the reinforced earthwork method as described above because the reinforcement is installed inside the fill body.

However, such a block-type reinforced earth retaining wall builds the retaining wall by stacking the front blocks and stacking the gravel layer and the backfill soil at the back of the front blocks, so that the work of the earthwork and the stacking is performed at the same time. There was this markedly falling issue.

In addition, since the horizontal force of the fill body caused by the process of building the retaining wall is very large, most of the horizontal displacement occurs during the layer stacking, and there is a serious disadvantage that the displacement accumulates as the layer stacking up.

In addition, if the settlement occurs in the back fill part of the back even after the construction is completed, the reinforcement directly connected to the front blocks will cause vertical displacement with the fill body, causing excessive tensile stress at the connection part of the front plate or block. There was a problem that the vertical linear deviation or breakage of the reinforcement occurs.

Accordingly, the present inventors construct the fill body first by layer stacking method using reinforcement and sand bags, and then later form the front wall by separating the fill body and the front wall by horizontal displacement generated during the fill process. This is not only solved the displacement problem, which was the biggest problem in the conventional reinforced soil retaining wall, but also it is possible to carry out only the same type of work by separately separating the fill body and the front wall. I came to the door.

Therefore, the object of the present invention is to construct a stable retaining wall structure by sufficiently absorbing the horizontal displacement of the retaining body during construction by constructing the fill body forming the rear part of the retaining wall first and then separating the front wall of the retaining wall later. In addition, the reinforcement retaining wall using the sand bags that can greatly improve the workability by holding the reinforcement firmly with the sand bags stacked while forming the drainage layer and forming the drainage layer and inducing the filling of the backfill soil easily. To provide.

Figure 1a is a side cross-sectional view illustrating a conventional block-type reinforced earth retaining wall

Figure 1b is a perspective view showing a conventional front block and reinforcement installation structure according to Figure 1a

Figure 2 is a perspective view showing a sand bag and reinforcement installation structure of the retaining wall retaining wall of the present invention

Figure 3 is a one-sided cross-sectional view showing a temporary work of the reinforced soil retaining wall according to the present invention

Figure 4 is a side cross-sectional view showing another construction example of the reinforced soil retaining wall according to the present invention

Figure 5 is a side cross-sectional view showing another construction example of the reinforced soil retaining wall according to the present invention

<Description of the symbols for the main parts of the drawings>

1: reinforcing material 2: front block 3: gravel floor

4: backfill soil 10: front wall 20: backfill soil

30: reinforcement 40: sand bag 41: sand bag

51: cement mortar 52: reinforcing pin 53: natural stone

54: cement mortar 55: block 56: reinforcement for connection

57: granular aggregate

Hereinafter, the technical structure of the present invention will be described in detail with reference to the accompanying drawings.

2 to 5 show the construction examples of the reinforced soil retaining wall constructed through the present invention.

According to the embodiments of the present invention, in the backfill soil 20 forming the rear part of the front wall 10, a grid-like fiber reinforcement 30 having a high tensile strength and a large friction inducing force is installed in a layer at a predetermined height. In constructing the reinforcement soil retaining wall configured to increase the cohesion and internal resistance of the sieve, the sand bag 41 is stacked along the front boundary of the fill part, and the backfill soil 20 is stacked on the back of the sand bag 41. Through the compacting method, the front part of the sand bag 40 to build a fillet body, the front part of the reinforcing material 30 is installed so as to be sandwiched between the upper and lower sand bag 41 of a predetermined height, the reinforcement material The front part of the 30 is fixed by the upper and lower sand bag 41, and the rear part is completed after filling the filling body buried in the back-filling soil 20, the front wall (10) by pasting the front of the sand bag wall 40 This is the basic feature of technical construction.

When the construction method of the present invention reinforcement soil retaining wall is constructed as described above, first, at least one or more layers of sand bags 41 are stacked on the bottom layer along the tip of the fill part, and then the backfilling soil is formed on the back of the stacked sand bags 41 layer. The stacking operation is carried out while stacking 20, and after the compacting operation is performed, the reinforcement material 30 is installed on the sand bag 41 layer and the upper portion of the backfilling soil 20, and the reinforcement material 30 is again formed. By repeating the work to fill the backfill soil while stacking the sand bag 41 on the tip end of the reinforcement, the reinforcement 30 is installed at a predetermined height while the tip of the reinforcement 30 is in the sand bag 41 of the upper and lower layers. After completing the fill body, the front wall 10 is later constructed so as to contact the front surface of the sand bag wall 40 formed by the lamination of the sand bag 41. Finishing the construction of the retaining wall It is good.

In the embodiment of the present invention, the reinforcing material 30, which is installed at a predetermined height as described above, extends upward while surrounding the front surface of the sand bag wall 40 by the tip portion thereof exiting between the sand bags 41 holding it. The reinforcing material 30 of the upper layer is provided to be sandwiched together between the sand bags 41, and the front surface of the sand bag wall 40 is characterized in that it is installed so as to be entirely covered by the reinforcing material (30).

The installation structure of the reinforcing material 30 is effectively prevent the phenomenon that the sand bag 41 deviates to the front surface by the lateral pressure of the filling soil, the reinforcement material (covered on the front surface of the sand bag wall 40 ( 30) as a medium to be firmly bound to the front surface of the sand bag (40).

The front wall 10 is completed by attaching to the front of the sand bag wall 40 located in the front end portion of the fill body after completion. The front wall 10 can be constructed in various forms with different materials depending on the site situation.

In other words, the front wall according to the present invention may be constructed by selecting and spraying shotcrete, green soil, or fiber mixed reinforcement soil, and attaching natural stone or artificial stone, stacking stone stacks or concrete panels using rubble in the field. Alternatively, the front wall may be constructed by stacking blocks.

In the shotcrete method, as shown in FIG. 3, the reinforcing pins 52 are inserted into the sand bag wall 40 from the front, and the cement mortar 51 has a predetermined thickness through an injector on the front face of the sand bag wall 40. Spraying to make a front wall 10 of the concrete surface.

The rust-based soil is a method of forming a front wall by installing a vegetation mat on the front face of the fill body and spraying a mixture of soil and seeds with an injector. In this case, there is an advantage of achieving slope greening.

Fiber mixed reinforcement soil method is to mix the polyester material and soil to spray the front surface of the fill body with an injector to form a front wall.

And, the method of attaching natural stone or artificial stone, as shown in Figure 4, using the natural stone 53 or artificial stone cement mortar (54) as a bonding medium through the front wall through the operation of attaching the front surface ( 10) is completed.

The stone stacking method is completed through the construction work by joining with cement mortar using rubble on site.

The method of forming the front wall by attaching concrete panels is completed by attaching the concrete panels made with patterns with cement mortar or concrete.

The method of constructing the front wall using the concrete block, as shown in Figure 5, while laying the blocks 55 in front of the fillet body, the reinforcing material for connecting between the upper and lower sand bags 41, the reinforcing material 30 is bite (56) are held together and extended to the front, the front end portion of the connecting reinforcement for extending 56 is inserted between the upper and lower blocks 55 and fixed, the block 55 and the sand bag wall Between the 40 to fill the granular aggregate 57, such as sand or gravel to build the front wall (10).

Here, the block 55 may install a vegetation block in the shape of potted plants at predetermined positions and introduce vegetation by planting trees in the vegetation block.

On the other hand, the present invention can implement a separate reinforcement earth retaining wall using a sand bag deformed in various structural forms in addition to the construction examples exemplified above, the description thereof is omitted because it can be easily implemented according to the technical idea of the present invention. do.

The present invention made as described above by constructing a fill body containing a drainage layer using a sand bag first, and then implementing a reinforcement soil retaining wall by a separation construction method to build a front wall,

Firstly, it is possible to obtain structurally stable retaining wall structure by absorbing horizontal displacement occurrence and construction error of fill body during construction.

Second, it is convenient to construct because the landfill body is constructed regardless of the form of the front wall.

Third, air can be shortened by being able to carry out only the same types of work such as fill body and front wall.

Fourth, due to the drainage layer using the sand bag there is no relaxation of the drainage layer is made easy drainage,

Fifth, it is advantageous to earthquake because seismic body and front wall behave separately in case of earthquake.

Sixth, in the event of a defect in the front wall, partial maintenance of the front wall is possible separately from the fill body, making it easy to maintain and

Seventh, the wide range of choices for the finish of the front wall can provide an environmentally friendly retaining wall structure,

Eighth, it is possible to change the construction of the front wall according to the regional characteristics and purpose of use.

As described above, the present invention is a very useful invention that can not only obtain a structurally stable retaining wall structure, but also greatly improve workability, wide selection of the retaining wall structure appearance, and easy maintenance after construction. .

Claims (5)

In the backfill soil 20 forming the rear part of the front wall 10, a grid-like fiber reinforcement 30 having a high tensile force and a large friction-causing force is installed at a predetermined height so that adhesion and internal resistance of the soil body are increased. In building a reinforcement retaining wall, Sand pile 41 is stacked along the front boundary of the fill portion, and the back portion of the sand bag 41 is piled up by stacking the backfill soil 20 in a manner to build a fill body composed of sand bags 40. , The front portion of the reinforcing material 30 is installed so as to be sandwiched between the upper and lower sand bag 41 of each predetermined height, the front portion of the reinforcing material 30 is fixed by the upper and lower layer sand bag 41 and the back portion is backfilling soil (20) After completion of the fill body buried in, the front of the sand bag (40) by attaching to the front wall 10, characterized in that the reinforcement soil retaining wall using a sand bag, characterized in that. 2. The reinforcement material (30) according to claim 1, wherein the reinforcement materials (30) extend upwards while enclosing the front surface of the sand bag wall (40) through the sand bag (41) in which the tip portion thereof bites. Separating reinforcement soil retaining wall using a sand bag, characterized in that the sand bag 41 is installed to be stitched together, so that the front portion of the sand bag wall 40 is entirely covered by the reinforcing material (30). The method according to claim 2, wherein the front wall 10 is formed to have a predetermined thickness by spraying, but the spraying method is shotcrete spraying cement mortar to form a concrete surface, the front of the sand bag 40 Either by installing a vegetation mat and spraying a mixture of soil and plant seeds to create a green soil surface, or spraying a mixture of fiber and soil such as polyester to create a fiber mixed reinforced soil surface. Reinforced soil retaining wall using a sand bag, characterized in that carried out as. The method according to claim 2, wherein the front wall 10 is constructed using natural stones or artificial stones, and when the stacking is performed, the sand bags are formed by filling the mortar or concrete between natural stones or stones. Reinforced earth retaining wall. According to claim 2, wherein the front wall 10 is constructed by stacking the concrete block 55 or concrete panel, the connecting reinforcement material 56 between the upper and lower sand bags 41, the reinforcing material 30 is bite After passing together and extending forward, the front end portion of the connecting reinforcement for extending 56 is sandwiched between the upper and lower blocks 55 and fixed, the block 55 and the sand bag wall 40 Separation reinforcement soil retaining wall using a sand bag, characterized in that the granular aggregate (57) such as sand or gravel is filled in between.