KR100903216B1 - Retaing wall structure using panels and constructing method thereof - Google Patents

Abstract

A retaining wall structure using panels and a constructing method thereof are provided to reduce construction period and construction cost by minimizing a cutting part. A retaining wall structure(1000) using panels comprises: a plurality of beams(100) being inserted into the ground and being arranged at regular intervals; and a plurality of panels for a retaining wall(200) being extended through gap between two contiguous beams and being vertically laminated. The cross section of the beam has a rib being extended forward and backward and a flange being formed on the front end and rear end of the rib. The panel for the retaining wall is arranged behind the front flange of the beam and a panel for anchor installation(300) is installed behind the panel for the retaining wall through gap between the two contiguous beams. An installation hole(310) is formed at the panel for the anchor installation to be bored and the one end is inserted into the installation hole after fixing an anchor(400) to the ground and the anchor and the panel for anchor installation are coupled through a fastener(420) like a nut.

Description

Retaining wall structure using panel and construction method {RETAING WALL STRUCTURE USING PANELS AND CONSTRUCTING METHOD THEREOF}

The present invention relates to a retaining wall structure using a panel and a construction method thereof, and to a retaining wall structure using a panel capable of facilitating construction while minimizing a cut portion which is a ground space for installing the retaining wall structure.

When roads or buildings are newly constructed in mountains, hills, etc., it is common to install retaining wall structures to prevent collapse by supporting the back soil pressure in the cut and fill sections.

A typical example of such a retaining wall structure is shown in FIG. 1 (hereinafter referred to as "prior art 1"), and the structure and construction method thereof will be described below.

As shown, in the prior art 1, a retaining wall 1 having an inverted T-shaped cross section or an L-shaped cross section is formed on the cut ground after forming the cut slope 7 having a relatively wide width in advance. Filling between 1) and the cut slope 7 forms a retaining wall structure. The retaining wall 1 is composed of a bottom plate 3 which receives the vertical soil pressure P _V from the earth-filled soil 9 and a wall portion 5 that receives the horizontal soil pressure P _H.

In the retaining wall structure of the prior art 1, a base plate 3 of sufficient length must be secured to prevent overturning and sliding of the retaining wall 1, and thus the width of the ground to be cut must be increased. Therefore, there is a disadvantage in that excessive cost and time for cutting and filling.

In order to solve this problem, Korean Patent Publication No. 0576291 (hereinafter referred to as "Prior Art 2") discloses a retaining wall structure and a construction method for reducing the area of the cut portion, which is attached to Figures 2a and 2b The configuration is briefly described on the basis of the following.

As shown, the retaining wall structure 50 of the prior art 2 is formed by pouring a predetermined thickness up to a predetermined height of the inclined surface 57 on the surface of the inclined ground and the base concrete portion 51 in which the soil is deposited And a plurality of beams 52 penetrating the foundation concrete part 51 to the ground to support the fill portion, and between the beams 52 and the beams 52 protruding to the ground. Is laminated in a combined state in order to close between the beam and the beam, thereby supporting a plurality of panels 53 supporting the backfill portion and the outside of the beam being laminated to the outside of the beam 52 protruding to the ground. It is configured to include a reinforcing block 54 to wrap and protect.

Forming the retaining wall structure 50 in this way has an effect that the width of the ground cut relative to the prior art 1 is relatively small.

However, also in the retaining wall structure according to the prior art 2, because there must be a cut slope of a predetermined width for placing the foundation concrete portion 51, there was a disadvantage in that the cost and time of construction still takes a lot.

The present invention has been made to solve the above problems of the prior art, an object of the present invention is to provide a retaining wall structure and a method of construction using a panel that can greatly reduce the time and cost of construction by minimizing the cut portion. have.

In order to achieve the above object, the retaining wall structure using a panel according to the present invention,

In the retaining wall structure comprising a plurality of beams inserted into the ground and spaced apart from each other, and a plurality of retaining wall wall panels which are stacked and installed in the vertical direction extending between the two neighboring beams,

The cross section of the beam includes a rib extending forward and backward and a flange formed at the tip of the rib, wherein the retaining wall panel is disposed behind the flange of the beam and behind the retaining wall panel the two neighboring beams. An anchor construction panel is installed between the anchor construction panel, and an installation hole is formed through the anchor construction panel, and the anchor penetrates and is inserted into the ground through the installation hole, and the anchor and the anchor construction panel are connected to the fastening means. Combined by, but the plurality of laminated retaining wall wall panel is characterized in that it shields the anchor panel.

Here, the beam is characterized in that the H-beam or the eye-beam with another flange formed on the rear end of the rib.

An accommodation groove is formed on the front surface of the panel for anchor construction, and the fastening means is accommodated in the accommodation groove.

The back of the panel for anchor construction is characterized by consisting of a flat both sides and the central surface formed convexly toward the ground.

The anchor construction panel is characterized in that the same thickness.

Both sides of the flat surface at the back of the anchor construction panel is in contact with the front surface of the flange formed on the back of the beam.

It is characterized in that the drainage material is filled between the back of the anchor construction panel and the retaining wall wall panel.

The front surface of the retaining wall wall panel is in contact with the rear surface of the flange formed on the front side.

The beam is characterized in that the support bracket for supporting the anchor construction panel is formed.

In addition, the construction method of the retaining wall structure using a panel according to the invention is characterized in that it comprises the following steps.

(1) inserting and installing a plurality of beams on the ground at intervals

(2) securing the insertion space of the panel between the two neighboring beams by removing part of the soil at the front of the beam and at the back of the front flange of the beam;

(3) lowering the retaining wall wall panel or anchor construction panel through the insertion space;

(4) at the anchor installation point, remove the soil at the front of the beam and part of the soil at the back of the front flange of the beam, and then fix it by inserting the anchor in the ground and fitting the anchor construction panel to the anchor.

(5) moving the panel for anchor construction by the fastening means in the longitudinal direction of the anchor to close contact with the ground;

(6) lowering the retaining wall wall panel disposed above through the space formed on the front surface of the anchor construction panel;

(7) Step of lowering the retaining wall wall panel in sequence while repeating step (2).

Here, the method further comprises the step of filling the drainage material in the space between the anchor construction panel and the retaining wall wall panel.

According to the present invention having the above-described configuration, the panel is installed while only cutting the front part and the middle part of the beam after installing the beam in the ground in the vertical direction, which is necessary for cutting work and slope surface reinforcement before slope reinforcement. The advantage is that you can save a lot of time and money.

Hereinafter, a preferred embodiment of the retaining wall structure according to the present invention will be described with reference to FIGS. 3 to 7. Hereinafter, for convenience of explanation, the 'front' is set to expose the panel after the retaining wall structure is installed, and the 'back' is set to be in contact with the ground (backing soil) to reinforce.

As shown in FIGS. 3 and 4, the retaining wall structure 1000 according to the present invention includes a plurality of beams 100 inserted into the ground and arranged at intervals from each other, and the two neighboring beams 100. It includes a plurality of retaining wall wall panel 200 is installed to extend over and stacked in the vertical direction.

The beams 100 are installed at predetermined intervals along the circumference of the slope of the ground to be reinforced. The predetermined interval is preferably set to match the retaining wall wall panel 200 provided between two neighboring beams.

The operation of installing the beam 100 on the ground may be applied to a conventional method known as follows.

For example, in the case of a relatively hard ground including a rock, as shown in Fig. 7 (a), a hole (710) is drilled in the ground 700 in advance and the beam 100 is inserted, and then the hole ( 710) can be firmly fixed by filling with mortar or the like.

In this case, as shown in FIG. 7B, a resistance piece 110 extending across the longitudinal direction of the beam can be provided to increase the resistance to the pulling force.

In addition, when the ground is weak, as shown in FIG. 7C, the beam 100 having the resistance piece 110 formed to be inclined upward may be installed by driving. When the resistance piece 110 is formed to be inclined upwardly, installation of the beam 100 is easy, but it is difficult to fall out of the ground.

5A and 5B, when the beam 100 is viewed from a planar cross section, flanges 130 and 140 are formed at the front and rear ends of the ribs 120 extending forward and backward, respectively, and the H-beams. It has the form of an H-beam or an I-beam. However, the rear flange 140 may be omitted and may be configured as a 'T' type beam.

Meanwhile, the retaining wall wall panel 200 is disposed at the rear of the front flange 130 of the beam 100, and the two adjacent beams 100 are located at the rear of the retaining wall wall panel 200 ( Anchor construction panel 300 is provided over 100). In the case where the beam 100 is an H-beam or an eye beam, the anchor construction panel 300 may be disposed between the two flanges 130 and 140 before and after to facilitate the installation work.

The anchor panel 300 is a component that reinforces the ground 700 together with the anchor 400 to be described later. If the anchor 400 and the anchor construction panel 300 are omitted, only the retaining wall wall panel 200 should support the ground. When the height of the slope to be reinforced exceeds 3m, the retaining wall panel (200) alone is difficult to support large earth pressures and can cause collapse.

After the anchor 400 is fixed to the ground 700, one end thereof is fitted into the installation hole 310 formed in the anchor panel 300, and the anchor 400 is fastened by a fastening means 420 such as a nut. And anchor construction panel 300 is coupled.

In this embodiment, the screw portion 430 is formed by a predetermined length from the end of the anchor 400, the fastening means 420 made of a nut is coupled to the screw portion 430, the anchor construction by rotating the nut It is possible to move the panel 300 for the rear (back soil direction) along the anchor 400. In particular, by rotating the fastening means 420 in the fastening direction can be moved while resisting the anchor panel 300 to the ground 700.

As shown in Figure 3, the front surface of the anchor construction panel 300 is recessed receiving groove 330 is formed, the fastening means 420 is accommodated in the receiving groove 330. Accordingly, since the fastening means 420 is not exposed to protrude from the receiving groove 330 does not affect the arrangement state of the retaining wall wall panel 200 disposed in front of the anchor panel 300. .

In addition, the back surface 340 of the anchor panel 300 is composed of a flat both sides 341 and a central surface 342 convexly formed on the ground.

Both sides 341 of the back surface of the anchor panel 300 is a portion facing the front surface of the rear flange 140 of the beam (100). In the drawing, both side surfaces 341 are in contact with the front surface of the rear flange 140 of the beam 100 to resist each other, but need not necessarily be in contact with each other.

As shown in the figure, for convenience of manufacture, the panel for anchor construction 300 is made of the same thickness as a whole. However, the anchor construction panel 300 may have a partly different thickness.

When the anchor construction panel 300 moves backward while resisting the ground 700, a space is formed between the front surface of the anchor construction panel 300 and the rear surface of the retaining wall wall panel 200. It is preferable that the drain material 500 such as sand or gravel is filled.

When the drainage material 500 is empty without being filled in the space, a partial collapse may occur at the rear of the retaining wall wall panel 200, which may cause ground subsidence.

On the other hand, the front surface of the retaining wall wall panel 200 is preferably in contact with the rear surface of the flange 130 formed in front of the rib 120 of the beam 100 to prevent shaking as much as possible.

In addition, the beam 100 may be formed with a support bracket 600 for supporting the anchor panel 300 to increase the resistance to the vertical force acting on the anchor panel 300. The coupling of the support bracket 600 and the beam 100 may be a conventional method such as welding or bolting.

In the drawing, although the nut is applied as the fastening means 420, when adopting the VSL anchor method of the post-tension method, a fixing device consisting of a fixing head, a wedge and a support plate may be used.

Hereinafter, a method of constructing the retaining wall structure 1000 described above will be described with reference to FIGS. 6A to 6F. In the drawing, the anchor panel 300 is disposed at the bottom, but the retaining wall panel 200 may be disposed at the bottom. In this embodiment, it is assumed that the lower panel is an anchor construction panel 300 to be described.

First, a plurality of beams 100 are inserted and installed on the ground, but are arranged at intervals along the periphery of the ground. Accordingly, the plurality of beams 100 are firmly fixed to the ground.

Next, as shown in FIG. 6A, an anchor construction panel 300 is installed between two neighboring beams 100 and 100. The length of the anchor construction panel 300 is preset equal to the distance between the two beams.

When installing the anchor panel 300, after removing the soil to the front of the beam 100 and part of the soil behind the front flange 130 of the beam 100 to secure the insertion space of the panel, It descends through the insertion space from the top of the beam (100). When the anchor construction panel 300 descends and reaches the bottom of the insertion space of the ground 700, the movement is stopped. In this case, the insertion space is preferably provided adjacent to the front flange 130 of the beam (100).

The retaining wall wall panel 200 is sequentially supplied above the anchor construction panel 300 to descend with the descending of the anchor construction panel 300.

In this way, the anchor construction panel 300 and the retaining wall panel 200 are lowered while removing part of the soil in the front of the beam 100 and the soil in the rear of the front flange 130 of the beam 100. When the predetermined anchor 400 is reached, the anchor installation work is performed.

In detail, as shown in FIG. 6B, when the anchor 400 is reached, the anchor 400 is cut between the neighboring beams 100 and the bottom of the anchor construction panel 300 after being cut. Install).

In this case, the beams adjacent to each other in a state in which both ends thereof span the neighboring beams 100 without first lowering the panel for anchor construction so as to facilitate the cutting of the slope and the installation of the anchor 400. It is preferable to cut and work only the center portion between (100) and (100).

Installation of the anchor 400 may be made by a known method through the perforation of the slope and the insertion of the strand wire and injection of mortar.

And, as shown in Figure 6c, in the vicinity of the beam 100, the earth and sand supporting the anchor panel 300 is cut even to allow the anchor panel 300 to descend. At this time, the retaining wall wall panel 200 supplied above the anchor panel 300 is lowered together.

In this state, as shown in Figure 6d, by moving the anchor construction panel 300 supplied from the upper side toward the anchor 400 and fixed using the fastening means 420 to firmly reinforce the slope.

At this time, by moving the fastening means 420 to the rear in the longitudinal direction of the anchor 400 can be moved while pressing the anchor panel 300 against the ground 700.

Thus, through the installation process of the anchor construction panel 300, an insertion space is formed between the front surface of the anchor construction panel 300 and the front flange 130 of the beam 100, through this insertion space The retaining wall wall panel 200 disposed above is lowered.

Even when a space is generated between the anchor construction panel 300 and the retaining wall wall panel 200 by the front and rear dimensional difference, it is preferable to prevent partial collapse by filling a drain material such as sand or gravel.

In addition, the front and rear dimensions of the anchor panel 300 is greater than the thickness of the retaining wall wall panel 200, so that the width of the slope cut by the anchor panel 300 for lowering is the retaining wall wall panel 200. Even if it is larger than the thickness of the retaining wall wall panel 200 and the clearance between the width of the cut surface may be filled with drainage material such as sand or gravel.

Next, as shown in FIG. 6E, when the panel descends through an insertion space formed between the two neighboring beams 100 and 100, another retaining wall wall panel 200 is moved to the upper end of the beam 100. Install them in order from the installation. Then, the bottom of the retaining wall wall panel 200 at the bottom of the panel insert while removing the earth and sand in the front of the beams 100, 100 and the back of the front flange 130 of the beam 100 When the space is created, the downward movement of the retaining wall wall panel 200 is caused by its own weight.

In addition, as shown in FIG. 6F, when the lowering operation of the retaining wall wall panel 200 is repeated, the retaining wall wall panel 200 is installed in the beam 100 from the set ground to a predetermined height.

In the drawing, the panel for anchor construction 300 is adopted as the panel disposed at the bottom of the initial stage of construction, but the retaining wall panel 200 is set as the lower panel, and the anchor panel 300 is the retaining wall panel. It may be disposed between the construction (200).

Furthermore, after moving only the retaining wall panel 200 and cutting the earth and sand at the anchor 400 installation position, and after installing the anchor 400, the panel for anchor construction from the front of the neighboring beams 100, 100 ( It is also possible to insert 300). In this case, it may be somewhat difficult to fill the drainage material between the anchor construction panel 300 and the retaining wall wall panel 200.

Performing such work along the slope of the ground completes the retaining wall structure 1000 that firmly reinforces the slope.

1 is a side cross-sectional view showing the structure of a retaining wall structure according to the prior art 1.

Figure 2a is a side cross-sectional view showing the structure of the retaining wall structure according to the prior art 2.

Figure 2b is a perspective view showing the structure of the retaining wall structure according to the prior art 2.

Figure 3 is a perspective view showing the structure of the retaining wall structure according to the present invention.

4 is a side cross-sectional view of FIG.

Figure 5a is a plan cross-sectional view cut through the anchor construction panel in FIG.

FIG. 5B is an exploded view of part of FIG. 5A; FIG.

6a to 6d is a side view showing an example of the construction method of the retaining wall structure according to the present invention.

7 is a side cross-sectional view showing a method of installing a beam in FIG.

※ Explanation of Major Components

100 ... beam

110 ... Resistance

120 ... ribs in the beam

130, 140 ... flange of the beam

200 ... Retaining Wall Panel

300 ... Anchor Panel

310 ... Installation of anchor panel

340. Back side of anchor construction panel

400 ... Anchor

500 ... Drainage

600 ... Base Bracket

700 ... Soil

1000 ... Retaining Wall Structure

Claims (9)

In the retaining wall structure comprising a plurality of beams inserted into the ground and spaced apart from each other, and a plurality of retaining wall wall panels which are stacked and installed in the vertical direction extending between the two neighboring beams, The cross section of the beam includes a rib extending forward and backward, and a front flange and a rear flange formed at the front and rear ends of the rib, respectively, wherein the retaining wall panel is disposed behind the front flange of the beam, and the retaining wall wall panel Anchor construction panels are installed at the rear between the two adjacent beams, The anchor construction panel has a flat surface on both sides and the rear convex center and the installation hole formed in the central surface fastening means is accommodated in the receiving groove formed in front of the panel for anchor construction, The anchor penetrates and is inserted into the ground through the installation hole of the panel for anchor construction, and the anchor and the panel for anchor construction are coupled by the fastening means so that the panel for anchor construction is moved backward along the anchor. Retaining wall structure, characterized in that the plurality of laminated retaining wall wall panel shielding the anchor panel. delete delete delete The method of claim 1, Retaining wall structure, characterized in that both sides of the flat surface of the anchor construction panel is in contact with the front surface of the flange formed on the back of the beam. The method of claim 1, Retaining wall structure, characterized in that the drainage material is filled between the back of the panel for anchor construction and the retaining wall wall panel. The method of claim 1, Retaining wall structure, characterized in that the beam is formed on the support bracket for supporting the panel for anchor construction. A method for constructing a retaining wall structure, wherein the retaining wall structure according to any one of claims 1 and 5 to 7 is constructed by the following steps. (1) inserting and installing a plurality of beams on the ground at intervals (2) securing the insertion space of the panel between the two neighboring beams by removing part of the soil in front of the beam and some of the soil in the rear of the front flange of the beam; (3) lowering the retaining wall wall panel or anchor construction panel through the insertion space; (4) at the anchor installation point, remove the soil at the front of the beam and part of the soil at the back of the front flange of the beam, and then fix it by inserting the anchor in the ground and fitting the anchor construction panel to the anchor. (5) moving the panel for anchor construction by the fastening means in the longitudinal direction of the anchor to close contact with the ground; (6) lowering the retaining wall wall panel disposed above through the space formed on the front surface of the anchor construction panel; (7) Step of lowering the retaining wall wall panel in sequence while repeating step (2). The method of claim 8, A method of constructing a retaining wall structure, further comprising the step of filling a drainage material in a space behind the retaining wall wall panel.

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