KR20190110713A - Underground structure wall and underground structure and method construturing the same - Google Patents

Abstract

The present invention relates to an underground structure wall, an underground structure having the same, and a construction method therefor. The present invention comprises: a bottom body constructed on the bottom of a basement; and underground structure walls supporting soil walls positioned on both sides of the bottom body, respectively, and connected to the bottom body. The bottom body includes: a discarded concrete layer placed on the bottom of the basement; a waterproof sheet provided on an upper surface of the discarded concrete layer; and a foundation concrete layer placed on an upper surface of the waterproof sheet. The underground structure walls each include: a retaining wall supporting the soil wall; a plurality of concrete panels arranged in a horizontal direction and a vertical direction to be in contact with the retaining wall, forming an inner concrete wall; a support material fixing the concrete panels to the retaining wall; an outer concrete wall formed at a set thickness on the inner concrete wall; and a waterproof sheet provided between the inner concrete wall and the outer concrete wall. According to the present invention, the soil wall can be strongly supported, configuration and construction are easy, the underground structure can be easily installed by strongly supporting the soil wall and using the retaining wall, and underground water can be effectively prevented from being introduced into the structure from the rear surface of the underground structure.

Description

Underground structure wall, underground structure having same and construction method thereof {UNDERGROUND STRUCTURE WALL AND UNDERGROUND STRUCTURE AND METHOD CONSTRUTURING THE SAME}

The present invention relates to an underground structure wall, an underground structure having the same, and a construction method thereof.

Temporary and concrete walls (retaining walls) are installed on excavation and fill slopes to make efficient use of limited land when installing roads and structures.

Korean Laid-Open Patent Publication No. 10-2014-0078395 (June 25, 2014) (hereinafter referred to as Prior Art 1) discloses a gravity block-type laminated wall retaining wall and a construction method for constructing concrete walls by stacking gravity blocks. It is. However, the prior art has the disadvantage that the construction is complicated because the retaining wall blocks are stacked in the vertical direction, the retaining wall blocks are fixed, and the backfill material is filled between the fixed retaining wall blocks and the retaining structure.

On the other hand, Republic of Korea Patent No. 10-1363878 (2014. 02. 17. Announcement Day) (hereinafter referred to as prior art 2) discloses the construction method of the underground road using the temporary structure and the plywood method of the present structure. However, although the prior art 2 can be used to construct the underground road while allowing some traffic of the vehicle to the ground, there is a disadvantage that the construction is complicated.

Republic of Korea Patent Registration No. 10-1322089 (announced on October 28, 2013) (hereinafter referred to as prior art 3) is a wall construction method is installed by supporting the strip and the PC wall with a support by installing a strip on the earth wall. . However, the prior art 3 has a complicated PC wall installation sequence, the back is installed in the back is not possible to fill the construction, the hollow space is generated in the basement, which is a critical problem for the safety accident on the road It can be cause. In addition, when installing the strip on the vertical pile, welding and bolting are performed. There is no space for access to the back of the PC wall, so there is no way to dismantle and recover the temporary steels by dismantling the strip. Therefore, there is a disadvantage in that economic efficiency is lowered.

SUMMARY OF THE INVENTION An object of the present invention is to provide an underground structure wall having a simple structure and construction, an underground structure having the same, and a construction method thereof, while supporting the soil wall firmly.

It is another object of the present invention to provide an underground structure wall, an underground structure having the same, and a construction method thereof, which firmly supports a soil wall and easily and easily installs an underground structure by using an earth wall, and blocks the inflow of groundwater.

In order to achieve the object of the present invention as described above, the earth wall wall supporting the soil wall; A plurality of concrete panels arranged in a horizontal direction and a vertical direction such that the soil film contacts the wall to form a concrete wall; There is provided an underground structure wall comprising a; support material for fixing the concrete panel to the earth wall.

It may further include an outer concrete wall and a waterproof sheet provided between the inner concrete wall and the outer concrete wall formed to a thickness set in the concrete wall.

In addition, the floor body constructed on the basement floor; Supporting earth walls respectively located on both sides of the bottom body, the underground structure walls being connected to the bottom body; the bottom body comprising: a cast concrete layer cast on an underground floor; A waterproof sheet provided on an upper surface of the discarded concrete layer; And a foundation concrete layer placed on an upper surface of the waterproof sheet, wherein the underground structure wall includes: an earthquake wall supporting the soil wall; A plurality of concrete panels arranged in a horizontal direction and a vertical direction such that the soil film contacts the wall to form an inner concrete wall; Jibojae fixing the concrete panel to the earth wall; An outer concrete wall formed to a thickness set on the inner concrete wall; There is provided an underground structure comprising a; waterproof sheet provided between the inner concrete wall and the outer concrete wall.

The support material preferably includes an earth anchor or brace for fixing the concrete panel.

It may further include a concrete slab for connecting the upper portion of the underground structure walls located on both sides of the bottom body.

In addition, the step of putting the first and second retaining wall on the ground at intervals from each other; Installing a strip and a support material on the first and second retaining walls, respectively, by excavating the excavation area of the ground located between the first and second retaining walls first; While excavating the excavation area of the ground secondly, the concrete panels are arranged in the horizontal and vertical directions on the first and second earthquake walls, respectively, and fixed with a support material to construct the first inner concrete wall on the first earthquake wall. Constructing a second inner concrete wall on the wall; Placing discarded concrete on an underground floor located between the first and second inner concrete walls; Attaching a waterproof sheet to the first and second inner concrete walls and the discarded concrete; Placing foundation concrete on the waterproofing sheet of the discarded concrete; Installing side molds on the first and second inner concrete walls, respectively, to pour the outer concrete walls after the waterproof sheets of the first and second inner concrete walls; The construction of the first and second outer concrete walls by placing concrete in the side molds respectively installed on the first and second inner concrete walls is provided.

The method may further include installing a top formwork to connect an upper portion of the first and second outer concrete walls to a concrete slab, and placing concrete on the top formwork to construct the concrete slab.

And installing a top formwork to connect the upper portion of the first and second outer concrete walls to the concrete slab, and placing concrete on the top formwork to construct the concrete slab, wherein the top form form the precast slab. It may also include.

The side formwork includes formwork concrete panels arranged in a horizontal direction and a vertical direction on an upper surface of the base concrete at intervals from the inner concrete wall, and a connection unit connecting the formwork concrete panels to the inner concrete wall, respectively. It is preferable.

The underground structural wall of the present invention is arranged in the horizontal wall and vertical direction to the concrete wall in the earth wall, and the concrete panels are fixed to the earth wall as a support material, respectively, so that the concrete panels are firmly fixed to the earth wall wall to act on the earth wall Structures that are safe against earth pressure and external forces are formed, and construction and construction of underground structures are simplified. In addition, when the waterproof sheet is included between the inner wall and the outer wall of the underground structure, the groundwater on the rear surface of the structure is prevented from leaking into the structure formed by the outer wall.

In addition, the underground structure of the present invention is provided with a waterproof sheet in the interior of the floor and located on both sides of the floor to support the earth walls, respectively, the earth structure walls are arranged in the concrete wall in the horizontal direction and the vertical direction of the concrete walls and the arrangement thereof Each concrete panel is fixed to the earth wall as a supporting material to form the inner concrete wall, and the outer concrete wall is formed on the inner concrete wall, and the waterproof structure is provided between the inner concrete wall and the outer concrete wall. Not only will it be firmly supported but it will also prevent groundwater from entering the underground.

In addition, the underground structure construction method of the present invention is to install a ground body on the basement floor and to support the earth walls located on both sides of the ground structure wall structure is to be provided so that the waterproof sheet is provided inside the underground structure wall ground water of the earth wall Construction of underground structures that do not flow is simple. In addition, when the concrete slab is constructed to connect the upper parts of the underground structure walls, it is possible to simply construct the underground structure in which the groundwater does not flow into the interior, and also to construct the plurality of layers of the underground structure in the vertical direction. In addition, since the waterproof sheet can be prevented from being damaged by the inner wall, it is not necessary to provide a separate waterproof sheet protective wall.

1 is a side view showing an embodiment of an underground structure wall according to the present invention;
Figure 2 is a side view showing an embodiment of the underground structure according to the present invention,
Figure 3 is a side view showing another embodiment of the underground structure according to the present invention,
Figure 4 is a flow chart showing an embodiment of the underground structure construction method according to the present invention,
5a to 5j is a side view showing the construction step by step an embodiment of the construction method for underground structures according to the present invention.

DESCRIPTION OF EMBODIMENTS An embodiment of an underground structure wall, an underground structure having the same, and a construction method thereof according to the present invention will be described with reference to the accompanying drawings.

1 is a side view showing an embodiment of the underground structure wall according to the present invention.

As shown in FIG. 1, one embodiment of the underground structure wall according to the present invention includes a retaining wall 10, concrete panels 20, and support members 30.

The retaining wall 10 supports the soil wall W. As shown in FIG. As an example of the retaining wall 10, the retaining wall 10 includes H piles arranged at intervals from each other and earth plates arranged in a vertical direction between two adjacent H piles. As another example of the retaining wall 10, the retaining wall 10 includes concrete piles arranged in a line. In another example of the occlusion wall 10, the occlusion wall 10 includes sheet piles arranged in a line. On the upper portion of the retaining wall 10 is provided with a strip and the support material (30). Supporting material 30 preferably includes an earth anchor.

The concrete panels 20 are arranged in a horizontal direction and a vertical direction so that the soil film contacts the wall 10 to form an inner concrete wall. The interior of the concrete panel 20 is provided with a connection portion is connected to the support material 30. Concrete panel 20 is preferably a rectangular panel. The concrete panel 20 may be implemented in various forms such as a hexagonal panel.

Figure 2 is a side view showing an embodiment of the underground structure according to the present invention.

As shown in FIG. 2, one embodiment of the underground structure according to the present invention includes a floor 100 and underground structure walls 200.

The floor 100 is constructed on the basement floor. As an example of the bottom body 100, the bottom body 100 is a cast concrete layer 110 placed on the basement floor, a waterproof sheet (S) provided on the top of the cast concrete layer 110, and the waterproof sheet ( S) includes a base concrete layer 120 cast on the upper surface.

The underground structure wall 200 supports the soil walls W respectively located on both sides of the bottom body 100, and is connected to the bottom body 100. As an example of the underground structure wall 200, the underground structure wall 200 includes a retaining wall 10, concrete panels 20, support material 30, an outer concrete wall 40, and a waterproof sheet S. do.

The retaining wall 10 supports the soil wall W. As shown in FIG. As an example of the retaining wall 10, the retaining wall 10 includes H piles arranged at intervals from each other and earth plates arranged in a vertical direction between two adjacent H piles. As another example of the retaining wall 10, the retaining wall 10 includes concrete piles arranged in a line. In another example of the occlusion wall 10, the occlusion wall 10 includes sheet piles arranged in a line. A strip 11 and an earth anchor 30 are provided at the top of the retaining wall 10.

The concrete panels 20 are arranged in a horizontal direction and a vertical direction so that the soil film contacts the wall 10 to form the inner concrete wall W1. The connection portion 21 to which the support 30 is connected is provided in the concrete panel 20. Concrete panel 20 is preferably a rectangular panel. The concrete panel 20 may be implemented in various forms such as a hexagonal panel.

Supporting material 30 is fixed to the concrete panel 20 to the retaining wall (10). Supporting material 30 preferably includes an earth anchor. In addition, the support 30 may include a support.

The outer concrete wall 40 is formed to a thickness set on the inner concrete wall W1. The lower end of the outer concrete wall 40 is connected to the basic concrete layer 120 of the bottom body (100).

The waterproof sheet S is provided between the inner concrete wall W1 and the outer concrete wall 40 to prevent the groundwater on the earth wall W side from flowing into the outer concrete wall 40.

The concrete slab 300 may be further provided to connect the upper portions of the underground structure walls 200 positioned on both sides of the bottom body 100. Concrete slab 300 is in the form of a flat plate one end is connected to the top of one underground structure wall 200 and the other end is connected to the top of the other underground structure wall 200.

In the state that the concrete slab 300 is not provided to form a citron (U) type underground structure.

When the concrete slab 300 is provided to form a box-like underground structure.

As shown in FIG. 3, a plurality of box-like underground structures may be provided in the vertical direction.

Figure 4 is a flow chart showing an embodiment of the underground structure construction method according to the present invention. 5A to 5J illustrate one embodiment of the underground structure construction method according to the present invention.

As shown in FIG. 4, in one embodiment of the construction method for underground structures according to the present invention, first, the step S1 of driving the first and second earthenware walls 10 to the ground at intervals is performed (FIG. 5a). As an example of the retaining wall 10, the retaining wall 10 includes H piles arranged at intervals from each other and earth plates arranged in a vertical direction between two adjacent H piles. As another example of the retaining wall 10, the retaining wall 10 includes concrete piles arranged in a line. In another example of the occlusion wall 10, the occlusion wall 10 includes sheet piles arranged in a line.

The first and second retaining walls 10 are driven into the ground, and then the excavation regions of the ground located between the first and second retaining walls 10 are first excavated, respectively, to the first and second retaining walls 10, respectively. ) Is installed (S2) (see FIG. 5B). Belt length 11 is preferably provided in plurality in accordance with the drilling depth of the underground structure at intervals in the vertical direction. An earth anchor 30 is provided on the earth wall W, and the strip 11 is pressurized by the earth anchor 30.

After installing the strip 11 at the upper part of the first and second retaining wall 10, the excavation area of the ground is excavated secondly, and the concrete panels 20 are respectively perpendicular to the first and second retaining wall 10. And fixing in the direction to construct the first inner concrete wall (W1) to the first retaining wall (10) and to construct the second inner concrete wall (W1) to the second retaining wall (10) (S3) (Refer to FIG. 5C, 5D). Concrete panel 20 is preferably a rectangular panel. The concrete panel 20 may be implemented in various forms such as a hexagonal panel. The connection portion 21 to which the support 30 is connected is provided in the concrete panel 20. Supporting material 30 preferably includes an earth anchor. The concrete panel 20 is connected by an earth anchor 30 installed in the earth wall W to penetrate the earth wall 10 and is fixed in a pressed state to the earth wall 10. The first and second inner concrete walls W1 are constructed to have a set height and length, respectively.

After constructing the first and second inner concrete walls W1, the step S4 of casting the discarded concrete on the basement floor located between the first and second inner concrete walls W1 is performed (see FIG. 5E). The discarded concrete is preferably cast to a height where the lower ends of the first and second inner concrete walls W1 are not exposed.

After casting the discarded concrete, a step S5 of attaching the waterproof sheet S to the first and second inner concrete walls W1 and the discarded concrete is performed (see FIG. 5F).

After attaching the waterproof sheet S to the first and second inner concrete walls W1 and the discarded concrete, a step S6 of placing the foundation concrete on the waterproof sheet S of the discarded concrete is performed (see FIG. 5G). The foundation concrete is poured so as to have a thickness set on the upper surface of the waterproof sheet (S) attached to the discarded concrete.

Sides are placed on the first and second inner concrete walls W1 so as to cast the outer concrete walls 40 after the waterproof sheet S of the first and second inner concrete walls W1 in the cured state after pouring the foundation concrete. The step S7 of installing the formwork M proceeds (see FIG. 5H). As an example of the side formwork M, the side formwork M is formed with concrete panels 1 for formwork arranged on the upper surface of the foundation concrete in a horizontal direction and a vertical direction at intervals from the inner concrete wall W1, and the formwork thereof. It is preferable to include a connecting unit (2) for fixing the concrete panel (1) for formwork by connecting the concrete panels (1) for the inner concrete wall (W1), respectively. That is, the concrete panels 1 for formwork face and face the inner concrete wall W1 at a uniform interval from the inner concrete wall W1. As an example of the connection unit 2, it may include a connection tie. In addition, as another example of the connection unit 2, it may include an anchor bolt and a nut. The connection unit 2 may be implemented in various forms.

Installing the first and second outer concrete walls 40 by installing concrete in the side molds M respectively installed on the first and second inner concrete walls W1 after installing the side molds M (S8). Proceeds (see FIG. 5I). More specifically, between the waterproof sheet S and the side formwork M of the first inner concrete wall W1 and between the waterproof sheet S and the side formwork M of the second inner concrete wall W1, respectively. Pour concrete. When the concrete poured on the side formwork (M) is cured to form the outer concrete wall (40). In this state, a citron (U) type underground structure is formed.

Meanwhile, the upper portion of the first and second outer concrete walls 40 may be connected to the concrete slab 300 (see FIG. 5J). At this time, the upper formwork is installed so as to connect the upper portion of the first and second outer concrete walls 40 to the concrete slab 300, and the concrete slab is placed on the upper formwork to construct the concrete slab 300. As a result, a box-type underground structure having the basic concrete, the first and second outer concrete walls 40 and the concrete slab 300 as an inner surface is formed. As another example of a top formwork, the top formwork may comprise a precast slab.

In addition, when the first and second outer concrete walls 40 are constructed on the upper part of the concrete slab 300 and the concrete slab 300 is constructed on the first and second outer concrete walls 40, a plurality of box shapes are formed in the vertical direction. The structure may form a tunnel.

Hereinafter, the operation and effects of the underground structure wall, the underground structure having the same, and a construction method thereof according to the present invention will be described.

The underground structure wall of the present invention arranges the concrete panels 20 in the horizontal direction and the vertical direction on the retaining wall 10 and fixes the arranged concrete panels 20 to the retaining wall 10 with earth anchors 30, respectively. Therefore, the concrete panels 20 are not only firmly fixed to the earth wall 10, but also firmly support the earth wall W, and the construction and construction are simple. In addition, when the underground structure wall includes the waterproof sheet S, the groundwater flowing through the soil wall W is prevented from leaking into the concrete wall W1 formed by the concrete panels 20.

In addition, the underground structure of the present invention is provided with a waterproof sheet (S) in the interior of the bottom body 100, respectively located on both sides of the bottom body 100, the underground structure wall 200 for supporting the soil wall (W) is The concrete panels 20 are arranged in a horizontal direction and a vertical direction on the wall 10, and the concrete panels 20 arranged therein are fixed to the wall 20 by the earth anchors 30, respectively, so that the inner concrete wall W1 is disposed. And the outer concrete wall 40 is formed on the inner concrete wall W1, and the waterproof structure S is provided between the inner concrete wall W1 and the outer concrete wall 40 so that the underground structural wall 200 is provided. Not only firmly supports the soil wall (W), but also prevents the groundwater flowing in the soil wall (W) from flowing into the underground structure.

In addition, the construction method of the underground structure of the present invention constructs the underground structure wall 200 to support the earth wall (W) located on both sides of the floor 100 to be installed on the underground floor inside the underground structure wall 200 Since the construction is provided so that the waterproof sheet (S) is easy to construct the underground structure that the groundwater of the soil wall (W) does not flow. In addition, when the concrete slab 300 is constructed to connect the upper portions of the underground structure walls 200, it is possible to simply construct an underground structure in which no groundwater flows into the interior, and by constructing a plurality of layers of the underground structure in the vertical direction. Can also be used as a basement structure.

In addition, since the present invention does not need to backfill the structure after the installation of the underground structure, the amount of underground excavation soil is small, so the economy is also excellent, and it is not possible to install the strip on the wall of the earthen using the steel, so the steel can be easily drawn out and recovered. You can do it.

10; Retaining wall 20; Concrete panel
30; Earth anchor 40; Exterior concrete wall
S; Waterproof sheet 100; Floor
110; Discarded concrete layer 120; Foundation concrete layer
200; Underground structure

Claims (8)

Earth wall wall supporting the earth wall;
A plurality of concrete panels arranged in a horizontal direction and a vertical direction such that the soil film contacts the wall to form a concrete wall;
Underground structure wall comprising a; support for fixing the concrete panel to the earth wall. The underground structure wall of claim 1, further comprising: an outer concrete wall formed to a thickness set in the concrete wall, and a waterproof sheet provided between the inner concrete wall and the outer concrete wall. A floor body constructed on the basement floor;
And supporting earth walls respectively located on both sides of the bottom body, and underground structure walls connected to the bottom body.
The bottom body,
Abandoned concrete layer placed on the basement floor;
A waterproof sheet provided on an upper surface of the discarded concrete layer;
It includes; the base concrete layer cast on the upper surface of the waterproof sheet,
The underground structure wall,
A soil wall supporting the soil wall;
A plurality of concrete panels arranged in a horizontal direction and a vertical direction such that the soil film contacts the wall to form an inner concrete wall;
Jibojae fixing the concrete panel to the earth wall;
An outer concrete wall formed to a thickness set on the inner concrete wall;
And a waterproof sheet provided between the inner concrete wall and the outer concrete wall. 4. The underground structure of claim 3 further comprising a concrete slab connecting the tops of the underground structure walls respectively located on both sides of the bottom body. Putting the first and second retaining walls on the ground at intervals from each other;
Installing a strip and a support material on the first and second retaining walls, respectively, by excavating the excavation area of the ground located between the first and second retaining walls first;
While excavating the excavation area of the ground secondly, the concrete panels are fixed to the first and second earthquake walls in the horizontal direction and the vertical direction, respectively, and fixed with the support material to construct the first inner concrete wall on the first earthquake wall, and the second Constructing a second inner concrete wall on the wall;
Placing discarded concrete on an underground floor located between the first and second inner concrete walls;
Attaching a waterproof sheet to the first and second inner concrete walls and the discarded concrete;
Placing foundation concrete on the waterproofing sheet of the discarded concrete;
Installing side molds on the first and second inner concrete walls, respectively, to pour the outer concrete walls after the waterproof sheets of the first and second inner concrete walls;
And constructing first and second outer concrete walls by pouring concrete into side molds respectively installed on the first and second inner concrete walls. The construction of the underground structure of claim 5, further comprising installing a top formwork to connect an upper portion of the first and second outer concrete walls to a concrete slab, and placing concrete on the top formwork to construct the concrete slab. Way. The method of claim 5, further comprising the step of installing a top surface formwork so as to connect the upper portion of the first, second outer concrete wall to the concrete slab, and constructing the concrete slab by placing concrete on the top formwork, the top surface Formwork is a method of construction of underground structures comprising a precast slab. The formwork according to claim 5, wherein the side formwork is formed on the upper surface of the foundation concrete, the formwork concrete panels arranged in the horizontal and vertical direction on the upper surface of the base concrete, and the formwork concrete panels respectively connected to the inner concrete wall Underground structure construction method comprising a connecting unit.

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