KR101805900B1 - Construction Method Of Underground Structure Using Form Frame - Google Patents

Abstract

The present invention relates to a form frame for construction of an underground structure and a construction method of an underground structure using the same. More specifically, the present invention relates to a form frame for construction of an underground structure and a construction method of an underground structure using the same, which uses the form frame when forming an interlayer slab, to safely transfer an earth pressure on the rear surface of an underground retaining wall, and to perform convergence of a construction error or the like, which unavoidably occurs in construction of a retaining wall and an interlayer slab. According to the present invention, the form frame for construction of an underground structure comprises: a pair of parallel members which has a ㄴ-shaped cross-section and is formed in parallel to each other and separated by a certain distance so that the internal surfaces face each other; external members which have a ㄴ-shaped cross-section to connect both ends of the pair of parallel members at a right angle and are configured so that the internal surface face the outside; and a central member formed at a regular interval between the external members by a pair of members having a ㄴ-shaped cross-section and the internal surfaces facing each other or by a member having a U-shaped cross-section, thereby connecting the pair of parallel members at a right angle.

Description

Technical Field [0001] The present invention relates to a method of constructing an underground structure using a formwork for constructing an underground structure,

The present invention relates to a formwork for constructing an underground structure and a method of constructing an underground structure using the same. More particularly, the present invention relates to a method for constructing an underfloor slab by using a formwork to safely transfer the earth pressure of the under- And a method of constructing an underground structure using the same, and to a method of constructing an underground structure using such a formwork for constructing an underground structure to converge a construction error inevitably generated when constructing an interlayer slab.

Generally, a backfilling method is used for the reason of stability of an underground structure and shortening of an air when constructing an underground structure, and a frame beam is provided at a boundary portion between the earth retaining wall and the interlayer slab when the backfilling method is applied. The slab supports the earth pressure of the earth retaining wall.

When the building is completed from the ground to the lowest floor in the order of the interlayer slab, the beam, and the pillars, the outer walls are successively formed from the lowest floor to the ground to embed the interlayer between slabs in the outer wall, .

As a background of the present invention, there is a utility model registration No. 0470708 entitled " Steel frame for earth pressure transmission having an exponential structure "(Patent Document 1). In the steel frame for transmitting earth pressure installed between an earth retaining wall and a slab, the steel frame has a central channel formed to be long at the center, a vertical channel extending vertically from one side of the center channel, And a plurality of protruding openings formed on the upper surface of the outer horizontal ribs and extending from the other side of the central channel and having end portions connected to the upper surface of the outer horizontal ribs, A first water level plate vertically upwardly protruding higher than a top surface of the connecting channel, a center channel and a slab to be installed in the future, and a second water level plate vertically downwardly protruded lower than the connecting channel and the center channel The present invention proposes a steel frame for earth pressure transmission having an exponential structure.

However, the above background art has a problem in that it is not only used as a structural member because it has a complicated shape due to its high manufacturing cost, and it has a problem that it is difficult to arrange a vertical reinforcing bar to construct an outer wall.

Registered utility model No. 0470708 "Steel frame for earth pressure delivery with exponential structure"

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a floor slab, So that it is possible to safely transmit the slab to the slab and to converge the construction errors inevitably generated when the slab and the interlaminar slab are constructed and to easily form an opening in the portion corresponding to the outer wall of the slab by using the formwork The present invention provides a method of constructing an underground structure using a formwork and a method of constructing an underground structure using the formwork so that the formwork itself can be utilized as a structural member while facilitating the reinforcement of the outer wall reinforcement and the concrete pouring.

The present invention relates to a biaxially-shaped cross member having a pair of parallel members spaced apart from each other by a predetermined distance so as to be opposed to each other, Shaped cross-section members are formed to face each other at an interval between the outer member and the outer member, or a U-shaped cross-section member is formed to connect the pair of parallel members in a perpendicular direction, The present invention provides a mold for constructing an underground structure.

In addition, the present invention is characterized in that the formwork support brackets are respectively welded to the flanges of the H-shaped steel of the steel composite pile embedded in the earth retaining wall at predetermined intervals, and the steel frame support brackets are welded to the lower portion of the concrete support brackets ; (b) installing a steel beam at an upper portion of the steel beam supporting bracket in parallel with the earth retaining wall at a position spaced apart from the retaining wall; (c) installing a large beam perpendicularly to the earth retaining wall on the upper part of the steel beam, and installing a small beam on the side of the large beam in a direction parallel to the earth retaining wall by a distance from the retaining wall; (d) installing a formwork between the formwork support bracket and the small beam, and installing a deck plate on top of the small beam; (e) treating the junction between the retaining wall and the formwork and between the formwork and the formwork with a lath; (f) arranging a horizontal reinforcing bar at a predetermined interval in an upper portion of the formwork, and arranging a vertical reinforcing bar in a vertical direction of the formwork; (g) forming an interlayer slab in which a plurality of openings are formed by placing concrete on an upper portion of the formwork, to provide a method of constructing an underground structure using the formwork for constructing an underground structure .

Also, in step (a), the formwork support bracket and the steel beam support bracket are formed so that two c-shaped or c-shaped beams are opposed to each other with a predetermined distance therebetween, and the method of constructing the underground structure using the formwork for the underground structure .

Also, in the step (a), a plurality of stud bolts are installed on the upper portion of the formwork support bracket of the H file of the earth retaining wall, and a method of constructing the underground structure using the formwork for constructing the underground structure.

And (h) after the step (g), an outer wall of the underground structure is formed by pouring concrete into the opening of the interlayer slab. [7] The method of claim 1, .

The method of the present invention for constructing an underground structure and the method of constructing an underground structure using the same is characterized in that a member having a c and / or c-shaped cross section is used for forming an interlayer slab, It is possible to safely transfer the earth pressure of the backside of the slab to the interlayer slab, and it is possible to converge the construction error inevitably occurring when the slab is interposed between the wall and the wall.

In addition, an opening is easily formed in a portion corresponding to the outer wall of the interlayer slab by using a formwork, thereby facilitating the placement of the reinforcing bars for the outer wall and the pouring of the concrete, while also utilizing the formwork itself as a structural member .

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is a perspective view showing a formwork used in the present invention.
2 to 7 are views showing a construction method of an underground structure according to the present invention in order of construction.
Fig. 8 is a partially enlarged view of Fig. 5. Fig.
9 is a view showing another embodiment of the mold receiving bracket of the present invention.
10 is a sectional view showing an embodiment in which an outer wall is formed by pouring concrete into an opening formed in the interlayer slab of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

Hereinafter, the technical structure of the present invention will be described in detail with reference to the preferred embodiments.

1 is a perspective view showing a formwork used in the present invention.

As shown in FIG. 1A, the formwork 30 includes a pair of parallel members 31 formed parallel and spaced apart from each other by a predetermined distance, and a pair of parallel members 31 And a center member 33 configured to connect the parallel member 31 at right angles to each other at regular intervals between the outer member 32 and the outer member 32. [

The parallel member 31, the outer member 32 and the central member 33 forming the formwork 30 are all made of steel. The parallel member 31 is made of a member having a bend section, The outer member 32 is made of a member having a bend section and the inner side surface of the outer member 32 is oriented toward the outer side in the longitudinal direction of the parallel member 31. [

As shown in FIG. 1A, the center portion member 33 may be formed such that a pair of b-shaped cross-section members faces the inner side surface, or may be formed of a U-shaped cross-section member, as shown in FIG.

The formwork frame 30 is installed such that a parallel member 31 on one side is mounted on the upper face of the mold frame support bracket 20 and a parallel member 31 on the other side is mounted on the upper face of the steel beam 40.

In this way, the mold 30 has the spacing space 1 formed between the outer member 32 and the central member 33, and between the central member 33 and the central member 33 so as to be spaced apart from each other by a predetermined distance , Concrete is not laid in the spacing space ( 1 ) when the concrete is laid on the upper part of the formwork (30) at the time of constructing the below-described underground structure so that an opening is formed in the spacing space ( 1 ) So that the concrete can be poured into the underground outer wall through the opening.

2 to 7 are views showing a construction method of an underground structure according to the present invention in order of construction.

The method of constructing an underground structure of the present invention is to construct an underground structure using the above-described formwork 30 for constructing an underground structure. As shown in FIG. 2, the formwork support bracket 20 And a steel bracket supporting bracket 90 are installed (a).

The formwork support bracket 20 is welded to a flange of a predetermined height of the H-shaped section 11 embedded in the earth retaining wall 10 at predetermined intervals to form a mold body to be described later, So that it is possible to construct an interlayer slab supporting the earth pressure transmitted through the slab.

Further, a steel beam support bracket 90 is welded to the H-shaped beam 11 at a lower portion of the formwork support bracket 20 at a certain distance.

The steel bracket support bracket 90 is mounted on the steel bracket 40 in a step to be described later so that the steel bracket support bracket 90 is configured so as to protrude more than the formule support bracket 20, 90 are maintained at a certain distance.

3, a steel beam 40 is installed parallel to the earth retaining wall 10 at a position spaced apart from the earth retaining wall 10 by a predetermined distance.

The steel frame beam 40 is mounted on the upper portion of the steel bracket supporting bracket 90 and is disposed at a position spaced apart from the retaining wall body 10 by a predetermined distance so that one side of the upper part provides a mounting surface for mounting the mold frame 30, The other side of the deck plate 41 is provided with a mounting surface for mounting the deck plate 41.

Since the steel beam 40 is configured to receive the large beam 2, it can be made to have a constant length only at the position where the large beam 2 is formed.

4, a large beam 2 is installed at an upper portion of the steel beam 40 in a direction perpendicular to the earth retaining wall 10, and the large beam 2 is spaced apart from the retaining wall 10 by a predetermined distance to be parallel to the earth retaining wall 10 And a small beam 3 is provided on the side of the large beam 2 in the direction of (c).

The large beam 2 is mounted on the upper part of the steel beam 40 and is installed at a direction perpendicular to the earth retaining wall 10 with a certain distance from the soil feeding wall 10.

The small beam 3 is formed in a direction perpendicular to both sides of the large beam 2 and is formed in a direction parallel to the earth retaining wall 10 by a certain distance from the earth retaining wall 10, Thereby providing a mounting space for the formwork frame 3 and providing a mounting surface for the formwork frame 30.

5, a formwork frame 30 is installed between the formwork support bracket 10 and the small beam 3, and a deck plate 41 is installed on the upper portion of the small beam 3 (d).

The formwork frame 30 is installed in such a manner that one parallel member 31 is mounted on the upper face of the mold receiving bracket 20 and the other parallel member 31 is mounted on the upper face of the small beam 3 .

In this way, the mold 30 has the spacing space 1 formed between the outer member 32 and the central member 33, and between the central member 33 and the central member 33 so as to be spaced apart from each other by a predetermined distance When the concrete is poured into the upper part of the formwork 30 in the step to be described later, the concrete is not poured in the spacing space 1 , and the opening 71 is formed when the interlayer slab 70 is formed.

A pair of the leveling members 31 converge a construction error occurring between the retaining wall body 10 and the interlayer slab and the back earth pressure of the retaining wall body 10 is transmitted to the outer member 32 from the one parallel member 31, And the central member (33), and is transmitted to the interlayer slab through the other parallel member (31).

At this time, the formwork 30 acts integrally with the concrete placed on the upper part so that the formwork 30 itself acts as a structural member at the joint between the interlayer slab and the outer wall.

6, various well-known deck plates 41 are mounted on the other side where the formwork 30 is mounted on the upper part of the steel beam 40. As shown in FIG.

Fig. 8 is a partially enlarged view of Fig. 5. Fig.

5 and 8, the joint between the retaining wall 10 and the mold 30 and between the mold 30 and the mold 30 is finished with a lath 42 e).

The lath 42 can be made of a variety of known products using a metal mesh that underlies the mortar so that the spaced space between the earth retaining wall 10 and the parallel member 31 of the mold 30 The upper part of the mold 30 is connected to the outer member 32 of the adjacent mold 30 and the upper part 32 of the mold 30 is closed with the lath 42, The spaced space between the mold 30 and the adjacent mold 30 is closed with the lath 42 so that the concrete can be installed.

8, a plurality of known stud bolts 12 may be provided on the upper portion of the formwork support bracket 20 of the H file of the earth retaining wall 10 to form the interlayer slab 70 ) So as to resist the earth pressure and the lateral force.

6, the vertical reinforcing bars 50 and the horizontal reinforcing bars 61 are disposed at predetermined intervals on the upper side of the mold 30 and the deck plate 41, as shown in FIG. 6 (f).

9 is a view showing another embodiment of the mold receiving bracket of the present invention.

The formwork support bracket 20 and the steel bracket support bracket 90 may be made of various members such as H-shaped steel. However, in the case of the H-shaped steel, the vertical reinforcement 62 is hardly penetrated, and interference between the web and the vertical reinforcement 62 may occur.

9, the two mold beams or the two beams are formed to face each other with a predetermined distance, and the mold frame support bracket 20 and the steel bracket support bracket 90 are formed in a spaced- 20, and it is possible to prevent the occurrence of interference at the time of placing the vertical reinforcing bars 62 and the like.

Finally, as shown in FIG. 7, an interlayer slab 70 having a plurality of openings 71 is formed by placing concrete on the upper portion of the formwork 30 (FIG.

Thus, the interlayer slab 70 is formed so that the interlayer slab 70 supports the earth pressure, and the concrete of the underground outer wall can be poured through the opening 71 of the interlayer slab 70.

After step (g), the outer wall 80 of the underground structure can be formed by pouring concrete into the opening 71 of the interlayer slab 70, as shown in FIG. 10 (h).

By supporting the earth retaining wall by the interlayer slab and the outer wall, the load is transferred and supported in the order of the interlayer slab, the die support bracket, and the earth retaining wall in the order of the vertical load on the upper part of the interlayer slab before the outer wall construction, The load is transmitted and supported in the order of the wall, the slab, the interlayer slab, the beam, and the column, and the vertical load on the upper slab is transferred and supported in the order of the interlayer slab and the outer wall.

The method for constructing an underground structure and the method of constructing an underground structure using the same according to the present invention can be implemented by using a member having a b and / or c-shaped cross section when forming an interlayer slab, It is possible to safely transfer the earth pressure of the underground earth retaining wall to the interlayer slabs and to converge the construction errors inevitably generated in the construction of the earth retaining walls and the interlayer slabs. It is possible to easily form the opening portion in the portion corresponding to the outer wall and the reinforcing bar for outer wall and to pour the concrete into the concrete structure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: Wallboard
20: Formwork frame bracket
30: Formwork
31: Parallel member
32: outer member
33: center member
40: steel bars
41: deck plate
42: Las
50: vertical reinforcement
60: horizontal reinforcement
70: interlayer slab
71: opening
80: outer wall

Claims (5)

delete In a construction method of an underground structure,
(a) A formwork support bracket 20 is welded and installed to flanges of an H-shaped steel 11 of a steel composite file embedded at a predetermined interval in a securing wall 10, And a steel bracket support bracket 90 is welded to the lower portion of the bracket 90;
(b) installing a steel beam 40 at an upper portion of the steel beam support bracket 90 in parallel with the earth retaining wall 10 at a position spaced apart from the earth retaining wall 10;
(c) A large beam 2 is installed on the upper part of the steel beam 40 in a direction perpendicular to the earth retaining wall 10 and a large beam 2 is provided in a direction parallel to the earth retaining wall 10, (3) on the side of the side wall (3);
(d) installing a formwork (30) between the formwork support bracket (20) and the small beam (3) and installing a deck plate (41) on the small beam (3);
(e) treating the joining portion of the formwork frame 30 and the mold frame 30 with the lath 42 between the retaining wall 10 and the mold 30;
(f) arranging a horizontal reinforcing bar 61 at an upper portion of the formwork 30 at a predetermined interval, and arranging a vertical reinforcing bar 62 in a vertical direction of the formwork 30;
(g) forming an interlayer slab (70) in which a plurality of openings (71) are formed by pouring concrete into an upper portion of the formwork (30)
The formwork (30)
A pair of parallel members (31) formed in parallel to each other so as to be spaced apart from each other by a predetermined distance so as to face the inner side in a bifurcated cross section, a pair of parallel members (31) An outer member 32 configured to be directed outward in the longitudinal direction of the member 31 and a pair of bifurcated end members facing the inner side at regular intervals between the outer member 32 and the outer member 32 And a center member (33) configured to form a U-shaped cross-section member and to connect the parallel member (31) in a perpendicular direction,
The die support bracket 20 and the steel bracket support bracket 90,
And the two c-shaped or c-shaped steel are formed to face each other at a predetermined distance. A method of constructing an underground structure using a formwork for constructing an underground structure. The method of claim 2,
In step (a)
Wherein the mold support bracket (20) and the steel bracket support bracket (90) are formed such that two c-shaped or c-shaped steel are opposed to each other with a predetermined distance therebetween. The method of claim 2,
In step (a)
Wherein a plurality of stud bolts (12) are installed on an upper portion of a formwork support bracket (20) of the H file of the earth retaining wall (10). The method of claim 2,
After step (g)
(h) forming an outer wall (80) of an underground structure by pouring concrete into an opening (71) of the interlayer slab (70) is added to the underground structure .

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