KR101075574B1 - Reinforced soil retaining wall for cutting and its construction method - Google Patents

Abstract

It is an object of the present invention to provide a reinforced soil retaining wall for improving the lateral durability of reinforced soil retaining walls constructed in various cutting grounds and enabling stress distribution. To this end, the present invention comprises the steps of forming a primary boring hole from the top of the top of the terrain on which the reinforced earth retaining wall is installed, injecting the primary grouting material into the formed primary boring hole, and the injected primary grouting Cutting the front side of the ash, installing a reinforcement in a state of being exposed to a predetermined length at the same time as forming a plurality of rows each up and down and left and right outward of the cut terrain, and in the left and right transverse direction of the externally exposed reinforcement Installing a primary pressure plate to be connected to a plurality of reinforcement at the same time and the step of installing a secondary pressure plate on the reinforcement in a state spaced apart from the primary pressure plate by a predetermined interval to the construction method to provide.

Description

Reinforced soil retaining wall for cutting and its construction method {A reinforced soil retaining wall for cutting slope and method of construction for the same}

The present invention relates to a reinforced soil retaining wall, and more particularly, to a reinforcement soil retaining wall and a construction method which can vary the construction form according to the properties of the ground and greatly improves the overall safety by dispersing the stress applied to the reinforcement.

In general, reinforcement soil wall is defined as a wall that suppresses the material on one side of the wall in order to maintain the difference in elevation, and such reinforcement soil wall is divided into gravity type, reinforced concrete type and reinforced soil reinforcement soil wall.

Hereinafter, a conventional general reinforced earth retaining wall structure will be described.

1A to 1F are side views illustrating a process of constructing a conventional general reinforcement soil wall in order.

First, as shown in FIG. 1A, a portion of the ground is cut down from the upper side.

Then, as shown in Figure 1b, the perforated hole 10 is formed in the inside of the excavated ground, and as shown in Figure 1c, the nail 11 is installed and the grouting material 12 is placed to perform the ground reinforcement.

Next, as shown in FIG. 1D, the shotcrete 20 is performed on the inclined surface as a temporary wall and, depending on the situation, the pressure plate (not shown) is fastened to the nail 11 exposed forward.

Repeating this process in multiple stages until the planned cut-off to the bottom is achieved as shown in Figure 1e, and finally through the construction of drainage holes (not shown) and the final retaining wall 30, as shown in Figure 1f The construction of the whole reinforced soil retaining wall is completed.

In addition, in the process of constructing such a conventional reinforced soil retaining wall, a method such as a pressure plate or shockcrete may be omitted and a retaining wall may be constructed.

In the case of the above-mentioned reinforcement earth retaining wall for cutting, one form of various reinforcement earth retaining walls is conventionally illustrated and described. In addition, reinforcement earth retaining walls, such as a method of stacking concrete blocks, are tended to be constructed.

2a to 2e are views showing some forms of conventional reinforced soil retaining wall is broken.

As shown, in the case of the conventional reinforcement earth retaining wall, as the wall of the retaining wall front over time, as shown in Figures 2a, 2b, the load is applied over the driving area in front of the terrain on the rear side of the reinforcement earth retaining wall, the sliding movement occurs As a result, the entire retaining wall of the front part collapsed.

Alternatively, as shown in FIGS. 2C and 2D, intensive loads are applied to the respective pressure plates 17 connected to the respective nail nails 11, thereby causing some areas of the retaining wall to fall off together with the pressure plates. Due to the dropping out of the area, other retaining wall areas were also frequently dropped due to a decrease in durability over time.

Furthermore, in the case of the retaining wall constructed by installing the geoblock 22 on the front side after the primary reinforcement stability as shown in FIG. 2E, the rubble filled between the geoblock 22 and the retaining wall 21 for the primary ground stability There is a case where the surface water drained through the drain hole 24 is stored in (28), in this case, if the surface water is stored concentrated in a certain position, the resulting load acts as a stress on the front geoblock, the front geoblock is eliminated Or collapsed.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the aforementioned problems and drawbacks of the prior art, and an object of the present invention is as follows.

First, it is an object of the present invention to provide a reinforcement soil retaining wall that can prevent the plane destruction at the interface of the fill and cut soil after cutting.

Secondly, an object of the present invention is to provide a reinforced soil retaining wall that can prevent the panel or block from falling off or destroying activity due to concentration of rainwater due to the inflow of surface water.

Third, the purpose of the present invention is to provide a reinforcement soil wall that can be applied to the construction method selectively according to the nature of the ground, and to make the overall construction period and construction work efficient at the same time.

Fourth, the purpose of the present invention is to provide a reinforced soil retaining wall in which the load is distributed in the overall structure of the reinforced soil to improve the stability of the structure.

In order to achieve the above object, the present invention comprises the steps of forming a primary punching hole from the top of the top of the terrain on which the reinforced earth retaining wall is installed, and injecting the primary grouting material into the formed primary drilling hole, and Cutting the front topography of the injected primary grouting material, and installing a reinforcement in a state of exposing a predetermined length at the same time as forming a plurality of rows respectively up and down and left and right toward the front and outside of the cut topography; Reinforcement soil for cutting comprising the steps of installing the primary pressure plate to be connected to the plurality of reinforcement at the same time in the left and right of the reinforcement and the secondary pressure plate on the reinforcement in a state spaced apart from the primary pressure plate by a predetermined interval Provide the construction method of the retaining wall.
Here, the method may further include installing a reinforcing beam in the primary drilling hole.
In addition, the reinforcement beam is installed to be partially exposed to the top of the cut terrain, it may be configured to further comprise the step of installing a reinforcement concrete cap on the exposed reinforcement beam.
In addition, the secondary pressure plate may be simultaneously fastened to a plurality of reinforcing members in the transverse direction.
On the other hand, the present invention is the reinforcement column module is formed by injecting the primary grouting material into the primary drilling hole formed from the upper side to the lower side, one end portion to form a plurality of rows up and down and left and right on the front cut of the reinforcement column module A plurality of reinforcing members which are installed in a state exposed to the first reinforcement member, and a primary pressure plate which is installed to be connected to a plurality of reinforcing members simultaneously in the left and right transverse direction of the externally exposed reinforcing members; Provides a reinforcement earth retaining wall for the cut including a secondary retaining plate installed on the exposed site and the concrete retaining wall is installed on the front side of the exposed reinforcement while at the same time to achieve the state of the primary pressure plate and the secondary pressure plate. do.

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The construction method of the present invention cut reinforcement soil retaining wall configured as described above has the following effects.

First, the present invention, by applying the reinforcing column installation step, etc. according to the solidity of the ground so that the entire reinforcement soil wall is constructed, the overall safety is improved and at the same time the construction period and construction costs are reduced.

Second, the present invention is to provide a reinforced earth retaining wall with improved safety and durability by providing a double pressure plate to distribute the stress.

Third, the present invention is to extend the length of the primary pressure plate in the transverse direction but to be coupled to the plurality of reinforcement at the same time to maximize the effect of the force distribution and brings the effect of simplifying the installation of the pressure plate.

Fourth, by installing a reinforced concrete cap to integrate the reinforcement column on the ground to increase the resistance to conduction and active destruction that may occur during the excavation process, the overall safety is improved and the construction is easy during the excavation.

Fifth, the present invention has the effect of improving the appearance by applying a separate vegetation configuration to the stable reinforced soil retaining wall.

Figure 1a to 1f is a side view sequentially showing a conventional general reinforcement retaining wall construction method;
Figures 2a to 2e is a view showing a number of forms of conventional reinforced earth retaining wall is broken;
Figure 3 is a side cross-sectional view showing a state in which the reinforcement column is installed in the reinforcement soil retaining wall according to the present invention;
4 is a plan view showing a state in which the reinforcement column is installed in the reinforcement soil retaining wall according to the present invention;
Figure 5 is a side cross-sectional view showing a state in which the reinforcement concrete cap is installed on the reinforcement column in the reinforcement soil retaining wall according to the present invention;
Figure 6 is a side cross-sectional view showing a state in which the reinforcement and the pressure plate is installed in the reinforcement soil retaining wall according to the present invention;
Figure 7 is a side cross-sectional view showing a state in which the reinforcement and the pressure plate is installed on the slope excavated in the reinforcement soil retaining wall according to the present invention;
8 is a perspective view showing the reinforcement and the pressure plate is installed on the slope excavated to the plan in the reinforcement soil retaining wall according to the present invention;
9 is a view showing a primary pressure plate is installed on the reinforced soil retaining wall according to the present invention;
10 to 12 is a view showing a secondary pressure plate is installed on the reinforced soil retaining wall according to the present invention;
Figure 13 is a side cross-sectional view showing a state in which reinforcement and formwork is installed in the reinforcement soil retaining wall according to the present invention;
Figure 14 is a side cross-sectional view showing a state that the reinforced soil retaining wall is constructed in accordance with the present invention;
15 is a view showing an example of a three-dimensional sculpture that is built in front of the reinforced soil retaining wall according to the present invention;
Figure 16 is a side cross-sectional view showing a state in which the present invention reinforcement soil retaining wall is constructed in various forms according to a variety of rock and terrain; And
Figure 17 is a flow chart showing the steps of constructing a reinforced soil retaining wall for cutting according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

First, with reference to the accompanying drawings will be described the structure and construction method according to a preferred embodiment of the present invention reinforcement soil retaining wall and a construction method therefor.

Figure 3 is a side cross-sectional view showing a reinforcement column module 85 is installed to bring the primary stability of the ground in the reinforcement earth retaining wall for cut according to the present invention, Figure 4 is a reinforcement earth retaining wall for cutting in accordance with the present invention 17 is a plan view showing a reinforcement column module installed, and FIG. 17 is a flowchart illustrating a method of constructing a reinforced soil retaining wall according to the present invention.

As shown in Figure 3 and 4, when constructing the reinforcement soil wall on the terrain identified as soft ground by analyzing the degree of solidity of the terrain it is preferable that the reinforcement column module 85 is installed for the foundation stability of the ground (S11) ).

To this end, the reinforced earth retaining wall is to be excavated a plurality of primary drilling holes 80 in the vertical direction along the transverse direction (S1).

In this case, the primary drilling hole 80 is formed deeper than the cut plan height, and the primary drilling hole 80, as shown in Figure 4, is formed in a form in which both side edge portions overlapped It is preferable to. The reason for doing so is to improve durability by allowing the whole reinforcing column module 85 to be integrated after the grouting material is hardened in the future.

The primary boring hole 80 is preferably formed horizontally with the reinforcing earth retaining wall to be built, Figure 3 shows that the reinforcing earth retaining wall is formed substantially vertically when the primary drilling hole 800 is formed.

Then, the primary grouting material 82 for reinforcement is injected into the primary drilling hole 80 (S3).

At this time, the reinforcing primary grouting material 82 is formed by injecting cement stir and solidified.

On the other hand, as shown, it is preferable to form a double reinforcement structure by separately installing a reinforcement beam 84 in the primary drilling hole 80, wherein the reinforcement beam 84 is the end of the top of the terrain Some are installed in an exposed state (S2).

3 and 4 show that the H beam is applied as the reinforcement beam 84.

In this case, the reinforcing beam 84 is not installed in all the primary drilling holes 80, but is installed only in the primary drilling holes 80 at positions spaced apart from each other by a certain distance to prevent structural increase and increase in material cost. It becomes possible, and the excavation work of the secondary drilling hole for installing the reinforcing material 108 to be described later is advantageous.

Next, as shown in FIG. 5, a reinforcement concrete cap 88 is installed on the reinforcement beam 84 exposed to the outside of the terrain so that the reinforcement beam 84 is integrated with the terrain.

In this case, the reinforcement concrete cap 88 may be applied in the form of connecting the plurality of reinforcement beams 84 with each other, in this case, the effect of dispersing the stress applied to the terrain in the horizontal direction.

Next, as shown in Figure 6, after cutting the front side terrain of the reinforcement column module 85 from the top to a predetermined section (S12), in a state of being exposed to the front outside of the cut terrain a predetermined length. The reinforcement 108 is to go through the step of installing.

To this end, the step of excavating the secondary drilling hole 102 through the reinforcement column module 85 and the terrain simultaneously made of cement agitating is performed in advance (S13).

In addition, the reinforcing member 108 is installed in the secondary drilling hole 102, and the secondary grouting material 103 is injected (S14 and S15).

In this case, as the reinforcing material 108, nail nailing or an anchor may be applied.

Such a nail nailing or anchor has already been disclosed a number of known techniques, of which appropriate members are applicable and already well known to those skilled in the art, a detailed description thereof will be omitted.

In addition, installation of the cut and reinforcement material 108 and injection of the secondary grouting material 103 of the terrain is repeatedly performed over a plurality of sections from the top of the cut terrain to the cut plan height.

Excavation is completed until the cut plan is as shown in Figure 7 attached.

On the other hand, in the cut section of each of the reinforcing member 108 is provided with plate-shaped acupressure plate (111, 122) is exposed to the outside (S16).

In addition, the pressure plate connected to the reinforcing member 108 in the construction of the reinforcing soil retaining wall according to the present invention is provided by dividing the primary pressure plate 111 and the secondary pressure plate 122.

To this end, the primary pressure plate 111 and the secondary pressure plate 122 is provided with through holes 115 and 125 through which the reinforcement 108 penetrates to the central portion.

That is, the primary pressure plate 111 and the secondary pressure plate 122 along the longitudinal direction of the reinforcement 108 on the externally exposed portion of the reinforcement 108 is installed at a predetermined distance apart.

In addition, each of the pressure plate (111, 122), as shown in the accompanying Figure 8, to secure the respective pressure plate (111, 122) to the reinforcing member 108 using a separate coupling member 133.

The coupling member 133 may be applied in the form of a predetermined coupling nut.

On the other hand, as shown, the primary pressure plate 111 is preferably made of a shape extending a predetermined length in the horizontal direction. 11 and 12, the primary pressure plate 111 may be installed in such a manner as to connect a plurality of adjacent reinforcing materials 108 at the same time, that is, two or more through which the reinforcing materials 108 pass simultaneously. The through hole 115 may be provided.

As such, when the primary pressure plate 111 is formed to extend a predetermined length on both sides, or when the plurality of reinforcing materials 108 are connected at the same time in the transverse direction, the stress applied from the rear side terrain after the reinforcing soil wall is constructed is 1 According to the charge pressure plate 111, the effect that can be dispersed in the transverse direction is brought.

After all, when the reinforcement column module 85 is determined to be the soft ground, the primary pressure plate 111 is laterally assisted while bringing the dispersion of stress applied to the terrain primarily through the reinforcement column module 85. Since the effect of dispersing the stress in the direction can be doubled to enhance the durability of the reinforced earth retaining wall.

Next, a step of forming the drainage hole 150 using a predetermined through hole or a pipe pipe from the rear topography to the front side where the reinforcement column module 85 is installed is performed. The drain hole 150 serves to discharge the storage water stored in the rear side of the terrain to the outside of the reinforcing soil retaining wall is built to have an appropriate length for this purpose.

The process is repeatedly carried out until the planned cutting height, and the reinforcement work is carried out throughout the reinforcement soil retaining wall (S17). Next, the primary pressure plate 111 and the secondary pressure plate 122 are embedded in the concrete retaining wall. Go through the step of installing the reinforcing bar 180 and the formwork 170 to be installed (S18).

Next, after the concrete is poured between the formwork 170 and the reinforcement column module 85, the formwork 170 is removed after the curing of the concrete is completed (S19, S20).

In this case, the vegetation zone 195 is formed to a predetermined depth to the lower front side of the reinforcement soil wall which is generated by pouring concrete to enable the reproduction of plants.

Although not shown, the secondary pressure plate 122 may also be formed to extend to both sides of a predetermined length like the primary pressure plate 111 to induce lateral dispersion of stress.

In addition, as shown in the accompanying FIG. 15, the front side of the reinforcement soil retaining wall to be cured may form a three-dimensional structure 198 to bring out the appearance of the aesthetic tube.

At this time, a plant such as a vine growing through the vegetation zone 195 is installed in the front of the concrete retaining wall by using a three-dimensional structure having a different shape from that of FIG. 15 or by installing a separate thin reinforcing bar (not shown). It can also be grown in a wrapped form.

FIG. 16 is a side sectional view showing a state in which various types of reinforced soil retaining walls are constructed by applying a method of constructing a reinforced soil retaining wall according to the present invention on a terrain mixed with various rocks.

As shown, when installing the reinforcement retaining wall in the vicinity of the solid rock is excavated a portion of the rock in the top-down manner, after installing the reinforcing material 108 and the primary / secondary pressure plate (111, 122), concrete pouring or Reinforcement retaining wall is constructed by laminating concrete blocks.

When constructing the reinforced soil retaining wall 301 on such a solid rock, it is possible to guarantee the durability of the reinforced soil retaining wall because the risk of collapse of the terrain is small even without installing a reinforced column module for primary reinforcement of the ground.

On the other hand, when constructing the reinforcement soil wall 288 in a relatively constant level of solid ground, even if it does not reach the level of rock, it is divided into sections from the top of the ground to the bottom of the cut concrete 201 for each section. After performing the work to reinforce the ground by performing the work to install the reinforcement 108 and the primary / secondary pressure plate (111, 122).

After completing all of the above processes up to the height corresponding to the planned cutting height, the reinforcing soil retaining wall 288 is constructed using concrete in the form of covering the front side.

Next, in the case of soft ground, the reinforcement column 108 and the first and second secondary pressure plates 111 and 122 are installed after the reinforcement column module 85 is installed, as described above and described. Done.

According to the present invention, the reinforcement soil retaining wall construction method configured as described above by selecting the installation of the reinforcement column module according to the solidity of the ground so that the entire reinforcement soil retaining wall construction to improve the overall safety and construction period and construction The effect is to reduce costs.

In addition, by installing a double pressure plate to prevent the dispersion of stress applied to the reinforcement, while extending the length of the primary pressure plate in the transverse direction, but to be coupled to a plurality of reinforcement at the same time to maximize the stress distribution effect Work also has the effect of simplifying.

Furthermore, by separately installing the reinforcement concrete cap 88 so that the reinforcement column module 85 is integrated with the ground, the resistance to conduction and activity destruction that may occur during the excavation process is increased and the overall safety is improved. It brings the effect of easy excavation construction.

As described above, preferred embodiments of the present invention are described above with reference to the drawings, but the present invention is not limited to the above-described embodiments, and those skilled in the art do not depart from the spirit of the present invention. Modifications can be made without departing from the scope of the present invention.

80: drilling hole 82: grouting material
84: reinforcement beam 85: reinforcement column module
102: punched hole 103: grouting material
108: reinforcing material 111: primary pressure plate
115, 125: through hole 122: secondary pressure plate
133: coupling member 150: drain hole
170: formwork 180: rebar

Claims (8)

Forming a primary perforation hole from an upper side of a terrain on which a reinforced earth retaining wall is installed;
Injecting a primary grouting material into the formed primary boring hole;
Cutting the front side terrain of the injected primary grouting material;
Installing a reinforcing material in a state of exposing a predetermined length at the same time as a plurality of rows respectively up and down and left and right toward the front outside of the cut terrain;
Installing a primary pressure plate to be connected to a plurality of reinforcement at the same time in the left and right transverse direction of the externally exposed reinforcement; And
Installing a secondary pressure plate on the reinforcement in a state spaced apart from the primary pressure plate by a predetermined interval;
Construction method of the reinforcement soil retaining wall for cutting comprising a. delete delete The method of claim 1,
Construction method of the reinforcing soil retaining wall for cutting, characterized in that further comprising the step of installing a reinforcing beam in the primary drilling hole. The method of claim 4, wherein
The reinforcement beam is installed to be partially exposed to the top of the cut topography, the construction method of the reinforcement earth retaining wall for cut, characterized in that further comprising the step of installing a reinforcement concrete cap on the exposed reinforcement beam. delete The method of claim 1,
The secondary acupressure plate is a construction method of reinforcing soil retaining wall, characterized in that to be fastened to a plurality of reinforcement at the same time in the transverse direction. A reinforcement column module formed by injecting a primary grouting material into a primary drilling hole formed from an upper side to a lower side;
A plurality of reinforcing members installed at one end of the reinforcing column module to be exposed to the outside so as to form a plurality of rows in the upper and lower left and right sides of the top cut surface;
A primary pressure plate installed to be simultaneously connected to a plurality of reinforcing members in left and right transverse directions among the externally exposed reinforcing members;
A secondary pressure plate installed at an exposed portion of the reinforcement in a state spaced apart from the primary pressure plate by a predetermined interval; And
A concrete retaining wall installed at the front side of the exposed reinforcement while simultaneously forming the primary pressure plate and the secondary pressure plate in an insulated state;
Reinforcement soil retaining wall configured to include.

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