KR100755744B1 - Method for constructing reinforced earth retaining wall - Google Patents

Abstract

A construction method for a reinforced earth retaining wall is provided to form a front wall with reinforced strength to resist horizontal earth pressure and external force. A construction method for a reinforced earth retaining wall comprises the steps of: performing pit excavation on the bottom of a slope and placing base aggregates; forming a front wall(10) by piling up reinforced earth retaining wall blocks(11) on the base aggregates in multi-stage; paving stiffeners(20) such as geogrid having the width of 1.0~1.5m on the piled reinforced earth retaining wall blocks at regular intervals; and fixing the stiffeners by installing U-shaped hooks(31) on the backside of the reinforced earth retaining wall blocks and connecting V-shaped connectors(32) coupled with a spring to the top of the U-shaped hooks.

Description

Reinforced Retaining Wall Method {Method for Constructing Reinforced Earth Retaining Wall}

1 is a view showing a construction state applied reinforcement soil retaining wall method according to the present invention.

Figure 2 shows a plan view to which the reinforced soil retaining wall method according to the present invention is applied.

Figure 3 shows an enlarged plan view of the coupling member used in the present invention (a: U-shaped ring, b: planar and cross-sectional view of the V-type connecting ring spring is coupled).

Figure 4 shows a coupling state diagram of the coupling member used in the present invention (a: allow horizontal displacement, b: allow settlement of the reinforcement).

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

10: face wall 11: reinforced earth retaining wall block

20: reinforcing material 30: coupling member

31: U-shaped ring 32: V-shaped coupling with spring

Field of invention

The present invention relates to a reinforced soil retaining wall method, more specifically, the step of installing the base aggregate by the trench at the bottom of the slope; Stacking a reinforced earth retaining wall block in multiple stages on the foundation aggregate to form a front wall; Disposing a reinforcing material on the laminated reinforcement retaining wall block at regular intervals up and down; And installing a U-shaped ring on the rear surface of the reinforcement soil retaining wall block, and fixing a reinforcing material by connecting a V-connected spring coupled to an upper end of the U-shaped ring.

Background of the Invention

In general, the construction of roads and railroads is required for the formation of new cities and the smooth connection between cities, so that the terrain is cut or filled. If left uncut or embanked, the soil on the inclined surface is exposed to the outside, which implies the risk of ground collapse during rain or typhoon. Therefore, the cut section and the fill section on the inclined surface were formed with a reinforced concrete structure or reinforced soil retaining wall blocks stacked adjacent to the inclined surface to prevent the collapse of the steep slope and the ground accident. The concrete retaining wall is installed close to the surface of the soil to be reinforced and is vulnerable to cracks from the inside, and there are problems such as height limitation and excessive processing cost, and it is difficult to shorten the construction and construction period in winter, such as earthquake, heavy rain, In case of accident such as blasting, the stability of retaining wall due to collapse of backfill soil was weak. In addition, the steel structure is effective in shear resistance from the soil, but there was a problem that easily corroded. In order to solve the above problems, the construction of the reinforcement soil retaining wall using the reinforcing material, which enables excellent economic efficiency, free shape of the front wall, shortening the construction period, and earthquake resistant structure has increased. However, the conventional reinforcement earth retaining wall has a problem that the damage or separation of the reinforcement may occur because the combination of the block and the reinforcement is not strong, there is a risk of breakage or collapse of the block.

Conventional patents related to reinforcing soil retaining walls include 'reinforced earthwork method using string reinforcement' (Korean Patent Application No. 1996-027998, 1996.07.11), and the patent is economical due to easy processing and low loss of reinforcement. There is a problem in that the stability of the front wall is weakened because there is no buffer against the external force.

Therefore, the present inventors have made efforts to solve the shortcomings of the prior art, it is possible to form a front wall reinforced with a buffer action against the horizontal earth pressure and external force by using a spring, it is possible to form a front wall by stacking the reinforced earth retaining wall block By confirming that stability improves by this, this invention was completed.

After all, the main object of the present invention is to provide a reinforced soil retaining wall method that can form a front wall reinforced with a buffer effect against horizontal earth pressure and external force.

In order to achieve the above object, the present invention comprises the steps of installing the base aggregate by the trench at the bottom of the slope; Stacking a reinforced earth retaining wall block in multiple stages on the foundation aggregate to form a front wall; Disposing a reinforcing material on the laminated reinforcement retaining wall block at regular intervals up and down; And installing a U-shaped ring on the rear surface of the reinforcement soil retaining wall block, and fixing a reinforcing material by connecting a V-connected spring coupled to an upper end of the U-shaped ring. It provides a reinforced soil retaining wall method comprising a.

In the present invention, the U-type ring and the V-type linking ring coupled to the spring may be characterized in that the coating using a resin selected from the group consisting of epoxy, galvanized, FRP, PE, PP and PET. .

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

The construction sequence of the reinforced soil retaining wall method according to the present invention will be described (Fig. 1). First, the base aggregate is installed by digging at the bottom of the slope, and the front wall 10 is formed by stacking the reinforcement soil retaining wall block 11 in multiple stages on the base aggregate. The reinforcement 20 is installed at regular intervals above and below the laminated reinforcement retaining wall block. Next, the U-shaped ring 31 is installed on the rear surface of the reinforcement earth retaining wall block, and the reinforcing member is fixed by connecting a V-type connecting ring 32 having a spring coupled to the upper end of the U-shaped ring.

2 is a plan view showing a reinforcement earth retaining wall method according to the present invention, the reinforcement earth retaining wall according to the present invention is composed of a reinforcement earth retaining wall block 11, a reinforcing material 20 and the coupling member (30). The reinforcing soil retaining wall block 11 is composed of a head portion and a body portion, the engaging projection protruding on both sides of the top of the head is laminated in multiple stages in engagement with the groove formed in the top of the head. As the material of the reinforced earth retaining wall block, it is preferable to use concrete or cement. The reinforcing material 20 is installed at regular intervals between the rear surface of the reinforcement soil retaining wall block 11 and the reinforcement soil retaining wall blocks stacked in multiple stages. The reinforcing material 20 is a geogrid with a width of 1.0 ~ 1.5m, used geotextile reinforcement to enable a structure that is resistant to earthquake, and the material of the geogrid is also highly resistant to corrosion can be secured.

Figure 3 shows an enlarged plan view of the coupling member used in the present invention, a is a plan view of the U-shaped ring, b is a plan view and a cross-sectional view of the V-type connecting ring spring is coupled. As shown in FIG. 3, the reinforcement earth retaining wall front wall and the reinforcing material are coupled to each other through the coupling member 30 at the rear surface of the reinforcement earth retaining wall block. The coupling member 30 is provided with a U-shaped ring 31 on the rear surface of the reinforcing soil retaining wall block, and secures the reinforcing material by connecting a V-type connecting ring 32 having a spring coupled to the upper end of the U-shaped ring. The bonding member is coated using a polymer synthetic resin such as epoxy, zinc plating, FRP, PE, PP, PET, and corrosion is prevented to improve stability.

Figure 4 shows a coupling state diagram of the coupling member used in the present invention, a shows that allows the horizontal displacement, b shows that the settlement of the reinforcement. In a, when the main earth pressure occurs, the external force acts toward the front surface of the retaining wall retaining wall block, reducing the spring by δ1 and allowing horizontal displacement by the length of the spring. The rear fill body is pushed backward by the external force or the manual earth pressure of the fill body. At this time, the spring is increased by about δ2 to allow horizontal displacement, thereby reducing the tensile force applied to the reinforcement to secure additional stability of the front wall. Reinforcement earth retaining wall when constructing, the reinforcement earth retaining wall block should not allow horizontal displacement, it is possible to improve the stability of the front wall by allowing a certain amount of horizontal displacement by connecting the spring to the reinforcement.

The specific parts of the present invention have been described in detail above, and for those skilled in the art, these specific descriptions are merely preferred embodiments, and the scope of the present invention is not limited thereto. It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

As described in detail above, the present invention has the effect of providing a reinforced soil retaining wall method capable of forming a front wall reinforced with a buffer against the horizontal earth pressure and external force. Reinforcement earth retaining wall method according to the present invention can reduce the horizontal earth pressure and external force transmitted to the reinforced earth retaining wall front wall by the buffering effect against the horizontal earth pressure and external force by the use of the spring and the connecting ring as a coupling member. In addition, the bonding member is coated using a polymer synthetic resin such as epoxy, zinc plating and FRP, PE, PP, PET, and the material of the reinforcing material has a high resistance to corrosion, thereby ensuring stability. In addition, the amount of reinforcing material is reduced by the length of the spring and the connecting ring is economical, it is possible to suppress the displacement of the reinforcing material and reinforcing soil retaining wall block to the maximum by the external force generated during construction, such as compaction of the fill body.

Claims (2)

Reinforced soil retaining wall method comprising the following steps: Installing a basic aggregate by digging at the bottom of the slope; Stacking a reinforced earth retaining wall block in multiple stages on the foundation aggregate to form a front wall; Disposing a reinforcing material on the laminated reinforcement retaining wall block at regular intervals up and down; And Fixing the reinforcement by installing a U-shaped ring on the rear surface of the reinforcing soil retaining wall block, and connecting the V-type coupling ring coupled to the upper end of the U-shaped ring. The reinforcement soil according to claim 1, wherein the U-type ring and the V-type linking ring coupled with the spring are coated with a resin selected from the group consisting of epoxy, zinc plating, FRP, PE, PP, and PET. Retaining Wall Method.

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