KR20090013218U - Grid Bar - Google Patents

Abstract

The present invention relates to a method for constructing a reinforcement retaining wall support for prefabricated reinforcement soil, wherein a plurality of lines of high-strength polyester fibers combined into several strands are embedded in parallel along the longitudinal direction at regular intervals, In the reinforcement for retaining wall supporting a grid shape (Geogrid) wide and long form, which is covered with adhesive polyethylene coating (Fig. 4), the reinforcing soil is used on the upper and lower surfaces of the reinforcement to reinforce the frictional resistance of the reinforcing material. Provide construction method to maximize.

Grid, grid bar, reinforced earth retaining wall, reinforcement, friction resistance, reinforcement construction

Description

Grid Bar {Grid Bar}

Geogrid grid reinforcement can not be installed if the length of cut is not out due to rock, but geogrid strip reinforcement can be fixed after anchor bolt work (Fig. 2) in cut. It is a big advantage.

Grid-like reinforcement materials such as Geogrid or Tensagrid (Patent Document 8920843.3 September 14, 1989 UK (GB)) are widely used around the world, and are widely used in reinforcement soil wall blocks in Korea. I use it a lot. The reinforcement soil is assembled vertically, and the distance of reinforcement should be more than 70% of the height. Due to the rock, in Korea, there are many places where the cut part is composed of rock. Figure 2) after the reinforcement to fix the case is a common reflection. Geogrid is the best reinforcement for dispersing bearing breakdown envelope of reinforced earth by frictional resistance. As a way of overcoming this, the band-shaped grid reinforcement is used, so the reinforcement earth retaining wall work can be facilitated without cutting the shape of the reinforcement soil in the cut section or general work.

The existing strip type has a low frictional resistance, which shows a limitation in dispersing breakage lines in high retaining walls. Between the belt and the belt, the reinforcement must absorb the breakdown envelope so that the reinforcement is not formed when the retaining wall is worked with the vibration equipment after the embankment, and the general strip type reinforcement cannot absorb the breakdown envelope. It shows the disadvantage of forming breakdown envelope in the horizontal direction. In the geogrid method, it can be seen that when a layer is grinding a grid, compacting a reinforcement, and retaining wall work, the vibration equipment is vibrated and the breakdown envelope is dispersed in the reinforcement. It is a small grid on the grid, which holds the reinforcement and absorbs breakdown envelopes, and the geogrid method is designed to maximize the frictional resistance. The belt grid reinforcement has a great advantage in that the retaining wall can be easily operated by the band-shaped geogrid method when the back distance cannot be brought out by the rock.

Geogrid reinforcement is generally recognized as the best reinforcement in the work of large area or high retaining wall, but it is not easy in rock work of narrow area or cut section, and grid bar using grid makes it easy to work in small area or rock work. Can be used. As shown in (Fig. 2), in order to secure the point where anchor bolts are easily used in a narrow space with rock, and the tensile strength is dispersed, a high-strength grid is formed in the center of the grid bar to increase the tensile strength (Fig. 3). Deva. Therefore, it is a grid bar that can absorb breakdown envelope with both tensile strength and friction resistance.

The existing band-shaped reinforcement has excellent tensile strength, but it is said that the reinforcement earth retaining wall is piled by frictional resistance when it is repeatedly worked while reinforcing and reinforcing in retaining wall construction. When the destructive envelope is formed, it is not able to absorb the destructive envelope, but the retaining wall is supported by some passive resistance. This absorbs the destructive envelopes found in the lattice-shaped geogrid, while the deformed envelopes progress vertically in the general band form, and the retaining walls in the bottom of the retaining wall are visible in the high retaining walls. This can be seen as a simple example that does not absorb the destructive envelope. In addition, the method of stacking the reinforced earth retaining wall with reinforcing bars overcomes the destructive nesting wire with coercive passive resistance, but iron is corroded over time and may be unreasonable as a long-term reinforcing material. Is a chemical product, corrosion-free, semi-researched, and lightweight, making it easy to prioritize worker safety at work.

As shown in FIG. 4, the existing geogrid retaining wall works are frequently used. In cut rock work or complex retaining wall construction, the use of band-shaped geogrids as shown in (Figure 1) is essential to the operator and the retaining wall work. In the case of using a geogrid of the form as shown in Fig. 4, the shape is complicated, and if there is a rock, it is cut with a knife or other tool to perform the work as shown in Fig. 1 and Fig. 2. In this case, a geogrid bar or a strip-shaped geogrid, as shown in FIG. 3, is easy to work with tensile strength and frictional resistance.

Geogrid using geogrid in retaining wall works is to reinforce the weaknesses of general reinforcement or strip-shaped reinforcement and to take full advantage of geogrid.

1 is a perspective view of the working form as a reinforcing material according to the present invention,

2 is a perspective view of the anchor bolt operation of the reinforcing material according to the present invention,

3 is a front view and a sectional view of the three parts of FIG.

4 is a perspective view of a reference geogrid system,

* Explanation of symbols for main parts of the drawings

A: reinforcing material B: polyester fiber

C: polyethylene sheath

5: retaining wall wall 4: anchor bolt

Claims (1)

Band-shaped reinforcement using geogrid

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