KR20040097052A - A method for construction an artificial wall using a soil nail and the artificial wall constructed threrby - Google Patents

Abstract

PURPOSE: A composition method for an artificial wall using a soil nail and the artificial wall are provided to heighten economical efficiency and to shorten a period of construction by using a nail and filler for the ground stabilization. CONSTITUTION: The composition method for an artificial wall using a soil nail comprises the steps of: perforating a fitting hole of the proper diameter and depth on the appointed site of an excavation plane; inserting a nail(50) to each fitting hole to make the front projected from the surface of the excavation plane; grouting filler(60) to each fitting hole; after hardening the filler(60), arranging a footing bar(201) by folding up in the shape of an artificial wall on the front of the nail(50); and finishing by spraying finishing materials(205) on the footing bar(201).

Description

A method for construction an artificial wall using a soil nail and the artificial wall constructed threrby}

The present invention relates to an artificial wall composition method using a soil nail and an artificial wall formed by the same, in particular, a simple structure, the construction is easy to shorten the air and can be recorded at any point of the artificial wall and meet the site environment The present invention relates to an artificial wall composition method using a soil nail that enables rock landscaping and an artificial wall formed thereby.

In general, as the industry develops, the reclamation of steep slopes is inevitable due to the construction of new towns and the construction of complexes.

Therefore, it is required to establish slope stabilization measures to improve the land use efficiency, secure the stability and comfort of residential complexes, and satisfy the constructability, economic feasibility and environmental preservation.

An example construction method for the comfort of the residential complex is shown in FIG. This is a general artificial wall method disclosed in Korean Patent Registration No. 0340023, after excavating the slopes to form the retaining wall (6) using cement or the like on the excavation surface (1), the steel structure (10) on the uneven wall (6) After fixing the anchor bolt (8), the artificial rock (4) formed of GFRC (glass fiber reinforced cement) material to give a feeling of natural stone is a method of installing the steel structure (10).

This has the advantage of creating a natural environment of a residential complex through waterfalls and planting on artificial walls.

However, in this method, the retaining wall 6 is installed to stabilize the excavation surface 1, but the retaining wall 6 is caused by the shear action of the ground due to external factors (vibration caused by external construction, ground flow due to an earthquake, etc.). There is a problem that cracks or breakages occur in the artificial arm 4 so that the artificial arm 4 is cracked or broken in series.

In addition, the construction of the artificial wall is a hassle to prepare a large amount of steel frame in order to install the artificial rock (4) and weld them to construct the steel structure (10).

Therefore, despite the possibility of creating a pleasant residential complex, there is a problem that safety accidents occur due to instability of the excavation ground.

To this end, the PEM (Pre stressed Earth Method) method, which is capable of planting trees and planting trees, has been used in recent years to improve the stability of the excavated ground.

As shown in FIG. 2, the anchor holes 30 are horizontally drilled at predetermined intervals on the cut surface 20a cut from the base 20, and the anchor bolts 30 are tensioned in the drilled anchor holes. Embedding the anchor bolt by penetration, installing the foundation block 41 at the bottom of the cutting slope 20a, and stacking the PC block 40 from the foundation block 41 to the outside of the cutting slope 20a. Comprising the step of connecting the PC block 40 to the free end of the exposed anchor bolt 30, the step of backfilling the earth and sand 21 in the space between the PC block 40 and the cutting slope 20a.

When the ground to be formed is high, as shown in Figure 3, the excavation to the lower while securing the stepped portion 45 from the PC block retaining wall formed on the upper and through the above steps to construct the lower PC block retaining wall.

In this way, after the top and bottom wall construction is completed, the stepped portion 45 is planted by planting or the like.

However, the greening construction through the PEM method as described above can be planted only through the step 45. Therefore, at least one step 45 must be formed for greening, so there is a limit to greening.

In addition, after the construction of the upper PC block retaining wall for the construction of the step 45, there is a risk that the upper PC block retaining wall already constructed due to ground subsidence when excavating the lower ground. Accordingly, a separate construction is required to prevent ground subsidence.

In addition, there is a limit to the manufacturing size of the PC block 40 and the air block is limited because these PC blocks 40 are assembled to each of the anchor bolts 30 and constructed.

In addition, there is a problem such that the assembly position of the PC block 40 is deformed or damaged by the compaction pressure in the process of backfilling and compacting the soil sand 21 between the PC block 40 and the cutting slope 20a.

The present invention was created to solve the above problems, and has the following object.

First, it is an object of the present invention to provide an artificial wall composition method using a soil nail, which is capable of composition of artificial walls with a simple structure while securing the stability of the ground, and the artificial walls formed thereby.

Second, to provide artificial wall construction method using Soil Nail and artificial wall created by it, which allows the planting of waterfall or planting at any location, and the formation of rock surface suitable for the surrounding environment. have.

Third, there is provided an artificial wall composition method using a small nail capable of rapid construction and economical construction and an artificial wall formed thereby.

1 is a schematic cross-sectional view showing a construction state of a conventional artificial wall,

2 and 3 are schematic diagrams for explaining the state of greening construction such as ground stabilization and planting,

Figure 4 is a cross-sectional view showing the construction state of the artificial wall constructed by the present invention method,

5 is a partial cross-sectional perspective view showing the main portion of Figure 4,

6a to 6d is a process chart for explaining the composition method of the present invention,

7 is a cross-sectional view showing another embodiment of the present invention method and artificial wall.

* Explanation of symbols for main parts of the drawings

50 ... nail 51 ... spacer

52 Hose 60 Filler

61,62 ... 1,2 shotcrete 80 ... Acupressure plate

90 Support rod 95 Coupler

100 ... ground 200 ... artificial wall

201 ... Basic Root ... 205

Artificial wall composition method using the present invention nail nail achieving the above object comprises the steps of drilling a hole of the appropriate diameter and depth at the appropriate position of the excavation surface; Inserting a nail into each of the insertion holes such that its tip protrudes from the surface of the excavation surface; Grouting a filler in each of the insertion holes; After the filler is hardened, bending to the shape of the desired artificial wall at the tip of each nail to fix the root muscles; It characterized in that it comprises a; step of applying a finishing material to the reinforcement basic muscles to finish.

In addition, the composition method of the present invention is a step of coupling the support rods of different lengths using a coupler to the front end of each nail before fixing the basic muscle, and fixing the support plate on which the basic muscle is fixed to the free end of each support rod It further includes.

In addition, the composition method of the present invention is to fix the wire mesh for the foundation to the foundation root after the fixing of the basic root and after applying the finishing material to the first finish, fixing the reinforcing wire mesh on the surface of the first finished finish material After finishing the coating by applying the finishing material.

The finish may be any one of fiber-reinforced cement mortar or polymer concrete.

In addition, the composition method of the present invention is to pour the primary shotcrete on the excavation surface and to drill the insertion hole, and to combine the spacer so that the nail is located in the center of the insertion hole while inserting the nail into the insertion hole, after the grouting step 1 The method may further include installing a wire mesh and an acupressure plate to fix the nail on the secondary shotcrete surface and pouring the secondary shotcrete.

On the other hand, the artificial wall of the present invention to achieve the above object is characterized by the composition method.

According to the characteristics of the present invention, the composition method and the artificial wall of the artificial wall of the present invention is simple in structure by inserting a nail from the excavation surface to secure the stability of the ground and to install the artificial wall on the nail fixed to the ground.

In addition, since the shape of the artificial wall can be formed into a desired shape, greening such as a waterfall or planting can be performed at an arbitrary position.

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

The artificial wall composition method and the artificial wall of the present invention stabilizes the ground excavated by the composition of the complex by a soil nailing method, and the pleasant natural environment of the residential complex through artificial waterfall or planting on the excavated surface. It is possible to create and to allow the formation of rock surface in accordance with the surrounding environment.

The artificial wall composition method and the artificial wall constructed by the embodiment of the present invention first excav the ground 100 to a stable height that the excavation surface can stand as shown in Figure 6a and the first shotcrete on the excavation surface (shot crete) ; 61) is placed and protected from collapse of the excavation surface and the like, and the insertion hole 101 is drilled at an appropriate depth and spacing.

At this time, since the excavation surface is often used as the main body structure in the Soil nailing method, excavation is considered in consideration of the exact position and shape.

The drilling operation may be performed by introducing a fluid (air, water, cement grout, bentonite) using a boring machine.

Subsequently, as shown in FIG. 6B, the nail 50 is inserted into each insertion hole 101 so that the tip of the nail 50 protrudes from the surface of the excavation surface, and the hose 52 for inserting the filler is inserted together. Let's do it. At this time, the spacer 51 is installed so that the nail 50 is located at the center of the insertion hole 101 in order to secure the minimum thickness of the filler.

In addition, in the case where the nail 50 is used as a permanent structure, corrosion treatment is performed in consideration of corrosion.

Subsequently, as shown in FIG. 6C, the fillers 60 are grouted into the respective insertion holes 101 through the hoses 52, and the wire mesh 70 and the nail are formed on the surface of the primary shotcrete 61. An acupressure plate 80 for fixing the 50 is installed.

The process as described above is to increase the shear strength of the ground (100) itself by the nail 50 and the filler material 60 to suppress the displacement of the ground (100) expected after the completion of the construction.

In particular, the alternative structure of the excavation surface can be installed at a lower cost than other construction methods such as the PC block retaining wall and the site-cast concrete wall, and there is no large displacement even in the dynamic load such as the earthquake, and can sufficiently exhibit the resistance ability.

The ground stabilization process using the nail 50 allows the ground 100 of the area reinforced by the soil nail to function as an integral retaining wall and maintains stability even on the sloped ground.

As shown in FIG. 6D after the stabilization process of the ground 100 as described above, the support rod 90 is connected to the tip of each nail 50 protruding to the surface of the primary shotcrete 61 using the coupler 95. Let's do it. At this time, the length of each support rod 90 varies depending on the design shape of the artificial wall.

The coupler 95 is also screwed to the tip of the nail 50 serves to press the pressure plate 80 to fix the nail 50.

The coupler 95 may connect the nail 50 and the support rod 90 in various forms such as screwed or socket type. In addition, the nail 50 and the support rod 90 may be connected to each other by welding.

After the construction of the support rod 90 and the coupler 95 is completed, the second shotcrete 62 is poured on the surface of the primary shotcrete 61, the wire mesh 70, and the pressure plate 80 to finish the excavation surface. do.

Subsequently, as shown in FIGS. 4 and 5, at the tip of each support rod 90, the desired shape of the artificial wall 200 is bent to reinforce and fix the basic muscle 201. The artificial wall 200 is formed by spraying the finish 205 on 201 to finish.

Considering the case where a concave part is required for installation or planting of an artificial waterfall after the construction of the root of the basic muscle 201, the basic muscle 201 is bent and placed into various shapes.

Meanwhile, various reinforcement materials may be installed in the basic muscle 201 in consideration of the stability of the constructed artificial wall 200.

That is, in order to smooth the welding fixing operation to the supporting rods 90 at the time of reinforcement of the basic muscles 201, it is preferable to install the supporting plate 91 at the tip of each supporting rod 90.

In addition, after fixing the basic muscle 201 to the support plate 91, and then fixed the basic wire mesh 202, 203 to the basic muscle 201 and after the first finish by spraying the finish material 205, After fixing the reinforcing wire mesh 204 on the surface of the first finished finish 205, the finish 205 is sprayed to the final finish.

The finishing material 205 may be any one of fiber-reinforced cement mortar or polymer concrete.

In particular, the polymer concrete (polymer concrete) is an organic polymer compound in the cement and is made of concrete by combining aggregates such as sand and gravel, and has excellent compressive strength, excellent waterproofness and water tightness, and thus, artificial waterfall or It is advantageous for the environmental composition work such as planting. Therefore, in the embodiment of the present invention, a polymer concrete was used as the finishing material 205.

The foundation wire mesh 202, 203 used a large particle size (density) for easy attachment when spraying the finishing material 205.

In the embodiment of the present invention, the wire mesh 202 is used 50 × 50 mm, the wire mesh 203 is used a mesh of a finer particle size than the wire mesh 202.

After coating and finishing the finish 205 as described above, the surface of the finish 205 may be polished or paint may be painted in a color suitable for the surrounding environment.

On the other hand, the process of constructing the coupler 95 and the support bar 90 can be omitted by varying the length of each nail 50, as shown in FIG. That is, the back muscles of the basic muscle 201 may be welded to the tip of each nail (50).

In addition, the first and second shotcrete 61 and 62 and the wire mesh 70 to be installed on the excavation surface can be omitted depending on the stability of the excavation surface.

Artificial wall composition method and artificial wall using the nail as described above enables the artificial waterfall or planting at any point of the artificial wall 200 while ensuring the stability of the ground (100), cancer corresponding to the surrounding environment On the other hand, the composition of the excavation surface is possible.

The present invention as described above is not limited to the above embodiments without departing from the spirit and scope of the present application can be practiced with a number of modifications.

As described above, the artificial wall composition method using the soil nail of the present invention and the artificial wall constructed thereby have the following advantages.

First, by adopting a nailing method using the nail 50 and the filler 60 to secure the stability of the ground, economic construction is possible and is advantageous for shortening the air.

In addition, since the artificial wall 200 is constructed using the extended end of the nail, the structure is simple, and the air is shortened than the conventional method.

Second, after the completion of the excavation surface, the artificial walls can be installed in the desired shape by installing artificial walls through the foundation root and the finishing material at the extension end of the nail at the front position of the excavation surface. It is possible to create rock surface (excavation surface) that matches the surrounding environment. Therefore, it is advantageous to work on pleasant environment after the construction.

Claims (6)

Drilling an insertion hole 101 having a proper diameter and depth at a proper position of the excavation surface; Inserting a nail (50) into each of the insertion holes (101) so that its tip protrudes from the surface of the excavation surface; Grouting a filler (60) in each of the insertion holes (101); After the filler 60 is cured, bending to the shape of the desired artificial wall at the tip of each nail 50 to reinforce and fix the basic muscle 201; Spraying the finishing material 205 to the reinforcement basic muscle 201 and finishing; Artificial wall composition method using a nail nail, characterized in that it comprises a. According to claim 1, Before the fixing of the basic muscle 201, using a coupler (95) to the front end of each of the nail (50), each of the supporting rods 90 of different lengths, respectively, free of each supporting rod 90 Fixing the support plate 91 is fixed to the base root 201 to the end of the artificial wall composition method using a nail nail, characterized in that it further comprises. The method of claim 2, after fixing the foundation root 201 to the foundation wire mesh 202 and the foundation wire mesh 202, 203 after the first finish by spraying the finish material 205, 1 After fixing the reinforcing wire mesh 204 on the surface of the finished finishing material 205, the artificial wall composition method using a soy nail, characterized in that to finish by spraying the finishing material (205). The method according to any one of claims 1 to 3, wherein the finishing material (205) uses any one of fiber-reinforced cement mortar or polymer concrete. The method according to claim 4, wherein the primary shotcrete 61 is poured into the excavation surface and the insertion hole 101 is drilled. While the nail 50 is inserted into the insertion hole 101, the spacer 51 is coupled so that the nail 50 is located at the center of the insertion hole 101, After the grouting step, using a soil nail, the secondary shotcrete 62 is installed by installing a pressure plate 80 fixing the wire mesh 70 and the nail 50 on the first shotcrete 61 surface. Artificial wall composition method. An artificial wall, which is constructed by the artificial wall composition method of any one of claims 1 to 3.