KR200424468Y1 - latticed assembly of retaing wall with soil nailing - Google Patents

Abstract

The present invention relates to a grid-shaped prefabricated retaining wall having a structure that supports the earth pressure of the inclined slope by the Soil Nailing with the load of the grid-shaped retaining wall. The present invention aims to reduce the cross-section of the grid-shaped retaining wall by constructing the soil nailing method together with the grid-shaped retaining wall without supporting the earth pressure by the gravity of the grid-shaped retaining wall alone in supporting the earth pressure of the inclined slope. In addition, the slope stability is achieved by top-down excavation from top to down in the retaining wall installation area, and then the lattice prefabricated retaining wall is installed. It is to minimize.

Retaining Wall, Prefab, Lattice, Nail, Cutaway

Description

Lattice retaining wall fixed by small nailing {latticed assembly of retaing wall with soil nailing}

1 is a schematic diagram of an embodiment of the present invention.

Figure 2 is a detailed view of the fixed portion of the grid-shaped retaining wall and the nail in one embodiment of the present invention.

3 is an assembly view of an embodiment of the present invention.

Description of the main parts of the drawings

10 Foundation 20 Longitudinal Support

30 Horizontal support 40 Fitting groove

50 filler 60 perforator

70 small nails 90 acupressure plate

100 male wall 110 pressure plate fixing nut

120 Coupling 130 Fixed Nail

140 Plate 160 Nut

200 fixing means

The present invention relates to a grid-shaped retaining wall, and more particularly, to a structure for supporting earth pressure by soil nailing with the load of the grid-shaped retaining wall.

In general, when a slope of a mountain slope or a hill is damaged due to a natural disaster such as heavy rain or flooding, or when a new road or railroad is newly opened, it is necessary to fill the earth and sand in a bank, bank, or building construction near a river or lake. Resulting inclined surfaces. Conventional slope reinforcement methods for stabilizing the unstable slope as described above are known asuna method, Soil nailing method, Gabion method and concrete retaining wall method.

In the case of the concrete retaining wall method, the strength of the concrete retaining wall method is superior to other methods, and there is no risk of leakage or collapse until a certain period after construction. In case of erosion of inner wall, corrosion and cracking of concrete retaining wall proceeds at a very rapid rate during freezing and thawing of permeated water, so there is a problem that continuous maintenance must be performed after construction. Since it is impossible to grow plants, there is a problem that it is not environmentally friendly and the initial construction cost is very excessive.

In addition, the Soil nailing method has a problem that is not environmentally friendly because it is impossible to grow grass, wood plants on the inclined surface after the shotcrete is mounted on the surface of the inclined surface after completion of the soil nailing work.

Applicant has invented a rockfall prevention and greening process and a grid-shaped retaining wall (Patent Application No. 10-2004-0068782) thereby.

However, the grid-shaped retaining wall has to endure earth pressure by its gravity, so that the cross-section of the grid-shaped retaining wall becomes large in order to secure necessary gravity. The large cross-section of the grid-shaped retaining wall has a problem of widening the construction area and increasing the construction cost.

In addition, during the construction of the grid-shaped retaining wall may be the displacement of the soil in the inclined slope, there was also a problem that needs to be filled back.

The present invention is to solve this problem, in order to support the earth pressure to reduce the cross-section of the grid-shaped retaining wall by constructing the soil nailing method together with the grid-shaped retaining wall without supporting the earth pressure by the gravity of the grid-shaped retaining wall alone It is for.

Another object of the present invention is to achieve slope stability by top-down excavation in the retaining wall installation area, and then to install the grid-type retaining wall, and to construct only the grid-type retaining wall. Otherwise it is intended to minimize soil displacement.

In order to achieve the above object, the present invention, the foundation is installed on the front of the inclined slope, the vertical support and the horizontal support is installed on the foundation and provided with the fitting grooves are interlocked and accumulated in the frame of the vertical support and the horizontal support A grid-shaped retaining wall having an aggregate filler filled in order to secure the grid, and one end of the grid-shaped retaining wall inserted into a perforation hole at the rear of the retaining wall and fixed by grouting, and fixing the free length of the grid-shaped retaining wall and the soil nail Disclosed is a prefabricated retaining wall comprising a fastening means for locking.

Preferably, the fixing means is coupled to the end of the free field of the small nail is coupled to the fixed nail and the fixed nail that is drawn into the frame of the grid-shaped prefabricated retaining wall at intervals between the horizontal support and the grid-shaped retaining wall of the It may be provided with a plate located inside the aggregate filler.

Preferably, the plate is formed with a through hole, and the fixing nail may pass through the through hole, but may be fixed with a nut so as to contact both sides of the plate on both sides of the through hole of the plate.

Hereinafter, with reference to the accompanying drawings a grating type prefabricated retaining wall according to an embodiment of the present invention will be described in detail. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in a variety of different forms, only this embodiment is to make the disclosure of the present invention is complete and the scope of the invention to those skilled in the art It is provided for complete information.

1 is a schematic view of one embodiment of the present invention, Figure 2 is a detailed view of the fixing portion of the grid-shaped retaining wall and the nail in one embodiment of the present invention. 3 is an assembly view of an embodiment of the present invention. A foundation 10 is provided for supporting the grid-shaped retaining wall, and the grid-shaped retaining wall 100 is positioned on the foundation 10. The base may be by a method such as concrete pouring. The grid-shaped retaining wall is constructed by stacking the vertical support 20 and the horizontal support 30 in a lattice form.

The vertical support 20 has a fitting groove 40 is formed on the upper and lower sides and the horizontal support 30 is inserted into the fitting groove 40 is repeatedly stacked and required as a filler 50 made of aggregate particles in the space therein. To secure the weight.

On the other hand, by adjusting the length of the vertical support 20 or by forming the fitting groove 40 at any set position can be reduced in cross section of the retaining wall in accordance with the earth pressure rapidly decreasing in proportion to the square of the height, thereby reducing material loss and It may also solve the problem of inefficient over sectioning.

The cut-out surface of the back of the grid type retaining wall is reinforced by the soil nailing method. Soil nailing is a method of reinforcing cut slopes to prevent slope collapse such as earth and sand. Basically, nails are inserted into the base at relatively tight intervals without prestressing, increasing the overall shear strength of the base itself and also during construction and after completion. It is a technique to suppress the expected ground displacement.

One end of the small nail 70 is inserted into the perforated portion 60 of the inclined slope and is fixed by grouting. The other end of the small nail protruding into the inclined slope, that is, the pressure plate 90 formed with a through hole 80 in the free field and the pressure plate fixing nut 110 for fixing it act as structural elements on the inclined slope. In addition, if necessary, the wire mesh (band) may be installed and shotcrete may be connected to the small nail 70.

One embodiment of the present invention is to combine the effects of the above-described small nailing and the prefabricated retaining wall, the grid-like retaining wall 100 is fixed to the free field of the small nail (70). As the fixing means, a method of directly fixing the new support 20 or the horizontal support 30 may be considered.

Preferably, the coupling 120 is connected to the end of the small nail 70, and the fixed nail 130 of the same thickness as the small nail 70 is connected to the opposite side of the coupling. The fixed nail 130 is drawn into the frame of the grid-like retaining wall 100 between the horizontal support 30 is stacked with layers. On the other hand, the plate 140 is fastened vertically at any point in the frame of the grid-shaped retaining wall 100 of the fixed nail 130. Such fastening may be by welding, bolts, or the like. Preferably, the through hole 150 is formed in the plate 140, and after the fixing nail 130 penetrates the through hole 150, the nut 160 is provided on both sides of the plate 140, respectively, to oppose them. The nut 160 may be fixed to both sides of the plate 140 by rotating in the direction.

The plate 140 is buried in the aggregate filler 50 in the frame of the grid-shaped prefabricated retaining wall 100 to be firmly fixed, whereby the grid-shaped prefabricated retaining wall 100 and the nail nail 70 become an integral structure. . The cross section A of the lattice-shaped retaining wall 100 which is integrated with such a small nail 70 becomes smaller than before.

Hereinafter, a method of constructing a lattice type retaining wall which is an embodiment of the present invention will be described.

First, excavate the soil from top to bottom. After cutting to a certain depth, drill at regular intervals, insert a nail, and grout with cement milk in the empty space. After grouting, fasten the acupressure plate and the acupressure plate fixing notes to the free field of the small nail exposed to the cutting slope. This process is repeated to complete a stable cutting slope by means of small nailing at the planned height.

Secondly, the concrete foundation is poured and cured at the front of the cut-out slope, and the vertical support and the horizontal support formed with fitting grooves on the upper portion thereof are stacked in a lattice shape.

Third, when the grid type retaining wall is stacked up to the height of the free field of the small nail constructed in the first step, the fixed nail is coupled to the free field of the small nail and the plate is perpendicular to the fixed nail inside the grid of the grid type retaining wall. Fasten with

Fourth, the horizontal support to be fixed by the vertical support again on the fixed nail passing over the horizontal support, and fill and compact the aggregate filler and the necessary soil.

In this order, a lattice type prefabricated retaining wall which is fixed to a small nail is sequentially completed.

The grid-shaped retaining wall described as described above corresponds to a preferred embodiment, the present invention is not limited to the specific preferred embodiment described above, the technology to which the subject innovation belongs without departing from the gist of the subject innovation claimed in the claims Various modifications can be made by those skilled in the art, and such changes are within the scope of the claims.

By applying the gravitational prefabricated retaining wall's gravity and the small nailing method together to support the earth pressure, the cross section of the prefabricated retaining wall can be reduced, which reduces the amount of earthwork and reduces the construction cost.

Another effect of the present invention is to apply the small nailing method, unlike when applying only the grid type retaining wall, the excavation slope is stabilized by the soil nailing while excavating from the top to the bottom, and thus the grid type retaining wall back incision The soil displacement of the slope can be minimized.

Claims (3)

A foundation 10 installed in front of the incision slope; The vertical support 20 and the horizontal support 40 installed on the foundation and having the fitting groove 40 are interlocked with each other to accumulate and filled to give weight in the frame of the vertical support 20 and the horizontal support 40. A grid-type prefabricated retaining wall 100 having an aggregate filler 50; A small nail 70 having one end inserted into the rear cutaway perforation hole 60 of the retaining wall 100 and fixed by grouting; And The grid type prefabricated retaining wall (100) and the prefabricated retaining wall including a fixing means for fixing the free field of the small nail (70). The method of claim 1, The fixing means is connected to the coupling 120 at the end of the free field of the nail nail 70 and the fixed nail 130 and the fixed nail is introduced into the frame of the grid-shaped retaining wall at intervals between the horizontal support 30 A grid-type prefabricated retaining wall, which is fastened vertically to 130 and is provided with a plate 140 located inside the aggregate filler 50 of the prefabricated retaining wall. The method of claim 2, The plate 140 has a through hole 150 formed therein, and the fixing nail 130 penetrates the through hole 150 but contacts the both sides of the plate at both sides of the through hole of the plate 140. A grid-type prefabricated retaining wall, characterized in that is fixed to).

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