KR20070117059A - Reinforced earth retaining wall structure of perforated slope - Google Patents

Abstract

A reinforced earth retaining wall structure of a perforated slope is provided to obtain sufficient friction force and high resistance against corrosion by using a geogrid as a reinforcement, and to reduce a cost of perforation with an anchor having short length. A reinforced earth retaining wall structure of a perforated slope comprises a plurality of anchors(10), an anchoring device, a block(30) for the reinforced earth retaining wall, a reinforcement(40), and a fixing apparatus. The anchors are inserted to the perforated slope. The anchoring device comprising a bearing plate(21a,21b) and a nut(22), is coupled on the upper part of the anchor to secure the anchor. The block for the reinforced earth retaining wall is laminated in multiple steps, having a predetermined interval from the lower end of the perforated slope. The reinforcement is paved between a back side of the block for the reinforced earth retaining wall and the perforated slope. The fixing apparatus comprises a reinforcement coupling ring(51), a turn buckle(52), and a coupling ring(53), and couples the block for the reinforced earth retaining wall, the reinforcement, and the perforated slope.

Description

Reinforced Earth Retaining Wall Structure of Perforated Slope}

1 is a view showing a construction state of the cut slope reinforced soil retaining wall structure according to the present invention.

Figure 2 shows a plan view of a cut slope reinforcement earth retaining wall structure according to the present invention.

Figure 3 shows a perspective view of a cut slope reinforcing soil retaining wall structure according to the present invention.

Figure 4 shows an enlarged view of the reinforced earth retaining wall block combined with the reinforcing material.

5 is an enlarged view of a fixing device of a cut slope reinforcement soil retaining wall structure according to the present invention.

Figure 6 is an enlarged view showing the fixing means of the cut slope reinforcement earth retaining wall structure according to the present invention.

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

10: anchor 20: fixing means

21a: pressure plate 21b: pressure plate

22: nut 30: reinforced earth retaining wall block

40: reinforcing material 50: fixing device

51: stiffener hook 52: turnbuckle

53: fastening ring 54: block fastening hook

55a: steel bar 55b: steel bar

60: wire rope

Field of invention

The present invention relates to a cut slope reinforcement soil retaining wall structure, and more particularly, the present invention includes a plurality of anchors (10) inserted into the cut slope; Fastening means (20) comprising a pressure plate (21) and a nut (22) fixed to the upper end of the anchor to fix the anchor; Reinforcing soil wall block 30 is stacked in multiple stages at a predetermined interval from the bottom of the cut slope; A reinforcement member 40 disposed between the rear surface of the reinforcing soil retaining wall block and the cutout slope; And a fixing device (50) consisting of a reinforcing member connecting ring (51), a turnbuckle (52), and a fastening ring (53) connecting said reinforcing soil retaining wall block, said reinforcing material and said cutting slope. It is about.

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 form a reinforcement structure in a state in which a reinforced concrete structure or a reinforced soil retaining wall block is stacked adjacent to the inclined surface in order to prevent the collapse of the steep slope and the ground accident. Geogrid is important for the safe construction of cut slope reinforced earth retaining wall structure. Although the reinforcement length of geogrid depends on the conditions, the design criteria etc. are designed to maintain about 0.7 times the height of the retaining wall in the reinforced soil retaining wall. Decision and make it as long as possible. However, geogrids could not be constructed in cases where the reinforcement length of geogrids could not be secured, or existing cuts that had to be constructed while minimizing cut area, or cuts that had a small cut area in order to reduce natural damage. In addition, the reinforcing material is a galvanized stripe, a narrow plate-shaped alloy is installed, and the anchor is inserted at the end of the stripe, and the conventional technique of installing on the base plate has a narrow length and width of the reinforcement, so that the anchor cannot be sufficiently frictional. Long construction, a lot of drilling costs are required, the material of the reinforcing material was weak resistance to corrosion, there was a problem that the stability was not secured.

Conventional techniques related to cut slope reinforcement structures include a retaining wall reinforcement structure for cancer cut slopes (Korean Utility Model Registration No. 20-0223114, May 15, 2001). However, the above technique provides a retaining wall reinforcement structure for the female cutout slope which can install the geogrid on the section of the cutout or the short length of the arm, but the stability is not secured because the geogrid is not anchored to the slope. There was no problem of weak binding force of the reinforcement and anchor.

Thus, the present inventors have made efforts to solve the shortcomings of the prior art, using a geogrid as a reinforcement on the cut-out surface, and to secure the geogrid with an anchor to maximize the friction force, and to reduce the anchor length due to the improved friction force stability The present invention is confirmed by improving the convenience of construction by making the geogrid construction possible by adjusting the length by using a turnbuckle when securing the reinforcement and reducing the drilling cost and securing the reinforcement length of the geogrid. It was completed.

The main object of the present invention is to provide a cut slope reinforced retaining wall structure with improved economics and convenience of construction.

In order to achieve the above object, the present invention provides a plurality of anchors (10) inserted into the cutting slope; Fastening means (20) comprising a pressure plate (21) and a nut (22) fastened to the upper end of the anchor to fix the anchor; Reinforcing soil wall block 30 is stacked in multiple stages at a predetermined interval from the bottom of the cut slope; A reinforcement member 40 disposed between the rear surface of the reinforcing soil retaining wall block and the cutout slope; And a reinforcing slope reinforcing wall structure including a fixing device (50) consisting of a reinforcing member connecting ring (51), a turnbuckle (52), and a fastening ring (53) to connect the reinforcing soil retaining wall block, the reinforcing material and the cutting slope. to provide.

In the present invention, the reinforcement connecting ring 51 has a V-shape, it may be characterized in that the fixing of the reinforcing material using the connection ring and steel bar for fixing the block.

In the present invention, the turnbuckle 52 of the fixing device may be characterized in that the length can be adjusted.

In the present invention, it may be characterized in that it further comprises a wire rope 60 directly connecting the reinforcement earth retaining wall block and the anchor.

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

The construction sequence of the cut slope reinforced soil wall structure according to the present invention will be described in detail (FIG. 1).

First, a plurality of anchors 10 are inserted into the cutout surface, and the fixing unit 20 is fastened to the upper end of the anchor projecting out of the cutout surface to fix the anchor. At a lower end of the cut slope, the foundation aggregate is installed by digging, and the reinforcing soil wall block 30 is laminated in multiple stages on the foundation aggregate. A reinforcing member 40 is provided at regular intervals between the rear surface of the reinforcing soil wall block and the cutout slope at regular intervals up and down of the reinforcement soil wall blocks stacked in multiple stages. A block fixing linkage 54 is fastened to a hole formed in the reinforcing retaining wall block body portion, and a V-shaped reinforcement connecting ring 51 is connected to the block fixing ring to fix the reinforcing material. In addition, the fastening ring 53 is connected to the fixing means of the upper end of the anchor fixed to the cutting surface, the fastening ring is connected to the turnbuckle 52, the turnbuckle is connected to the reinforcing material connecting ring 51 is reinforced Fix it. In addition, for higher stability, the reinforcing soil wall block and the anchor directly connected to the wire rope (60).

Figure 2 shows a plan view of the cut slope reinforced soil wall structure according to the invention, Figure 3 shows a perspective view of the cut slope reinforced soil wall structure according to the present invention, the cut slope reinforced soil wall structure according to the present invention is an anchor (10) ), Fixing means 20, reinforcing soil wall block 30, the reinforcing material 40 and the fixing device (50).

The anchor 10 serves to replenish the friction force by the length of the reinforcing material lacking by anchoring the cut surface, the back length of the reinforcing material does not come out as the height of the reinforcing soil wall when forming the cut slope reinforcement retaining wall. That is, as the length of the reinforcement is long, the frictional force acts largely to secure stability. As a general rule, the length of the reinforcement should come out as the height of the reinforcement soil wall. An anchor is installed on the cutoff surface, and the anchor inserted into the cutoff surface securely tightens the reinforcing material to maximize the frictional force and secure sufficient supporting force. It is preferable that the length and the installation interval of the anchor are installed by performing a ground survey and examining the stability.

Fixing the anchor by fastening the fixing means 20 to the upper end of the anchor projecting out of the cutting slope, the fixing means 20 is composed of a pressure plate (21a, 21b) and the nut (22).

The reinforcing soil wall block 30 is composed of a head portion and the 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. A reinforcing material is installed at regular intervals up and down of the reinforcing soil wall block stacked in multiple stages between the rear surface of the reinforcing soil wall block 30 and the cutout surface. Compared to the conventional reinforcement is a galvanized stripe is installed in a long alloy of a narrow plate shape, in the cut slope reinforcement earth retaining wall structure according to the present invention used a geogrid of 1.0 ~ 1.5m in width as the reinforcement 40, The use of the geogrid can reduce the length of the anchor is inserted into the cutting slope, the material of the geogrid is also highly resistant to corrosion can ensure safety.

When the turn bark 52 connects the reinforcement with the anchor, it has frictional force of the ground, firmly holds the reinforcement, and both rings rotate to lengthen or shorten. In addition, when the reinforcement is installed on the cut-out slope, when the reinforcement length of the reinforcement can not be secured, the length of the turnbarl can be adjusted to be used to construct the reinforcement. In addition, steel bars 55a and 55b fitted to the reinforcement may be used to disperse the stiffener connecting ring and the concentrated stress with the reinforcement.

It is preferable to further include a wire rope 60 for directly connecting the reinforcement soil retaining wall block 30 and the anchor 10, the material of the wire rope is used PC strands, depending on the site conditions It may be.

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 cut slope reinforcement soil retaining wall structure improved construction efficiency and convenience. Cut slope reinforcement earth retaining wall structure according to the present invention, when the reinforcement is installed on the cut slope, when the reinforcement length of the reinforcement can not be secured by using a turnbuckle, the length can be adjusted to enable the construction of the reinforcement to improve the convenience of construction There is. In addition, the reinforcement can be secured by anchors to compensate for the insufficient frictional force when installing the cutout slope, and the geogrid is used as the reinforcement, and the length of the anchor is reduced to reduce the drilling cost and high resistance to corrosion. Stability is effective.

Claims (4)

A plurality of anchors 10 inserted into the cutaway surface; Fastening means (20) comprising a pressure plate (21) and a nut (22) fixed to the upper end of the anchor to fix the anchor; Reinforcing soil wall block 30 is stacked in multiple stages at a predetermined interval from the bottom of the cut slope; A reinforcement member 40 disposed between the rear surface of the reinforcing soil retaining wall block and the cutout slope; And Cut reinforcement earth retaining wall structure comprising a fixing device (50) consisting of a reinforcing material connecting ring (51), a turnbuckle (52) and a fastening ring (53) connecting the reinforcing soil wall block, the reinforcing material and the cut slope. According to claim 1, wherein the reinforcement connecting ring 51 has a V-shape, cut slope reinforcement retaining wall structure, characterized in that for fixing the reinforcement using a block fixing connecting ring and steel bar. The cut slope reinforcement wall structure of claim 1, wherein the turnbuckle of the fixing device is adjustable in length. The cut slope reinforced soil wall structure according to claim 1, further comprising a wire rope (60) for directly connecting the reinforced soil retaining wall block and the anchor.

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