KR20190130745A - Under ground structure construction method using concrete wall with upper, under column and under ground structure therewith - Google Patents

Abstract

The present invention relates to an underground structure construction method using a retaining wall, which excavates an inner ground of a retaining wall and constructs an underground structure after inserting the retaining wall into an excavation hole in a trench shape formed on the ground, thereby being possible to minimize vehicle passage control, and an underground structure constructed by using the same. The retaining wall is possible to construct the underground structure having wide width in a lateral direction by using manufacture so as to allow a lower beam extended to a lower portion from a wall part to be integrated to be supported on a front end of the excavation hole formed to be spaced apart from each other in a lateral direction and allow an upper beam extended to an upper portion from the wall to be integrated to be positioned on a ground surface.

Description

Construction method of underground structures using earthquake walls and construction of underground structures using the same {UNDER GROUND STRUCTURE CONSTRUCTION METHOD USING CONCRETE WALL WITH UPPER, UNDER COLUMN AND UNDER GROUND STRUCTURE THEREWITH}

The present invention relates to an underground structure construction method using a retaining wall and an underground structure constructed using the same. More specifically, after inserting the retaining wall into the trench-shaped excavation hole formed in the ground, construct the underground structure by excavating the inner ground of the retaining wall, but construct the underground structure using the retaining wall to minimize the control of vehicle traffic on the ground. It relates to a method and underground structures constructed using the same.

FIG. 1 shows a construction diagram of a conventional SLIT method (slit method) for constructing a conventional underground roadway using a precast wall.

In this slit method, after fabricating the sidewall member 40 which is a precast member, the precast upper plate structure 50 is installed first, and the ground part is completed early without installing a perforated plate in preparation for the construction of a detachable underground structure. It can be referred to as a technology for constructing underground structures for excavation and construction.

The side wall member 40 used in the slit method is connected to the ground by connecting the support pile and the H-beam 42 resisting the lateral earth pressure at the bottom of the precast member 41 to each other in the underground structure The side wall of the construction is to be constructed, which is relatively easy to transport and construction compared to the case of constructing all the side wall of the underground structure as a precast member, which has the advantage that the cost can be reduced.

However, the precast member 41 and the H beam 42 are made to connect to each other by using an anchor bolt and a connecting steel sheet, respectively, in practice, such a connection is limited in quality control, the precast member ( In the case of increasing the size of 41), there is a problem that the workability is inevitably deteriorated due to the enlargement of the equipment.

In addition, there is a limit in constructing wide underground structures (for example, two-lane or more underground roadway structures) because the traffic of the upper part cannot be controlled before the precast roofing structure 50 is constructed, and the size of the precast roofing structure 50 is limited. If it becomes large, there is a problem that disadvantages in manufacturing, transportation and construction.

Korean Patent No. 10-1379305 (Invention name: Method of manufacturing wall structure using precast front wall and precast back wall, published date: March 28, 2014) Republic of Korea Patent Registration 10-1568194 (Name of the invention: PC member connection method and PC structure constructed using it) Republic of Korea Patent Application Publication No. 10-2010-0106274 (Invention name: dry joint structure for the prefabricated beam-column structure and construction method according thereto)

Accordingly, the present invention enables the construction of wide wall structures so that the wide ground structures can be constructed in a top-down manner while minimizing traffic control, so that the wide ground structures can be constructed more efficiently. The construction of underground structures using the earthquake walls that can be quickly and economically constructed by inserting them directly into the trench holes, and the technical problem to solve the provision of the underground structures constructed using the same.

The present invention to achieve the above object

(a) At the tip of the excavation hole formed so as to be spaced apart from each other in the transverse direction, the bottom wall extending from the wall portion to support the integrated lower beam, and extending from the wall to the top so that the integrated upper beam is located on the ground surface. Lifting and inserting construction; (b) installing a tie rod between the upper end of the intermediate pile and the upper beam of the retaining wall by constructing an intermediate pile downward in the ground between the retaining walls; (c) while excavating the ground between the intermediate pile and the upper beam of the retaining wall without the tie rods downward, the upper portion of the intermediate pile and the retaining wall so that the ground does not collapse toward the excavation space (S1) formed by excavation Installing an earth plate on the beam; And (d) constructing a part of the upper plate structure on the top of the wall part when the top of the wall part of the retaining wall is exposed in the excavation space S1. The ground on which the tie rod is installed is not controlled by vehicle traffic. It provides a method of construction of underground structures using the earth wall to allow the construction of a portion of the top plate structure in the absence.

Also preferably

(a) At the tip of the three excavation holes formed to be spaced apart from each other in the transverse direction, the earth film is extended so as to support the integrated lower beam extending downward from the wall portion and the upper beam integrated from the wall upward to be located on the ground surface. Lifting and inserting the wall; (b) constructing both intermediate piles downwards on the ground between the barrier walls to install tie rods between the upper ends of both intermediate piles and the upper beams of the intermediate barrier walls; (c) while excavating the ground between the intermediate pile and the upper beam of the retaining wall without the tie rods downward, the upper portion of the intermediate pile and the retaining wall so that the ground does not collapse toward the excavation space (S1) formed by excavation Installing an earth plate on the beam; And (d) constructing a part of the upper plate structure on the top of the wall part when the top of the wall part of the retaining wall is exposed in the excavation space S1. The ground on which the tie rod is installed is not controlled by vehicle traffic. It provides a method of construction of underground structures using the earth wall to allow the construction of a portion of the top plate structure in the absence.

The underground structure according to the present invention is supported by the lower end of the excavation hole formed to be spaced apart from each other in the transverse direction, so that the lower beam is integrated from the wall to the lower portion, and the upper beam is extended from the wall to the upper portion and is located on the ground surface. It is possible to construct by using mud wall, and to control the traffic to a minimum by using earth plate, so that the construction of wide underground structures is possible.

1 is a construction of the conventional slit method (SLIT method),
Figure 2 is a construction of the underground structure using the wall of the invention,
Figure 3a and Figure 3b is a flow chart of the construction method for underground structures using the earth wall according to the first embodiment of the present invention,
Figures 4a and 4b is a flow chart of the construction method for underground structures using the earth retaining wall according to the second embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

[Underground structure (A) using earth retaining wall 100 of the present invention]

Underground structure (A) using the earth retaining wall 100 of the present invention is to refer to Figure 2 first trenches excavated in the work space secured by digging a certain depth (to form a vertical hole continuously in the longitudinal direction with a predetermined width) Excavation), and insert the earthwall wall 100 of the present invention into the trench excavated excavation hole 310,

Construction of the upper plate structure 200 in the excavation space (S1, S2) secured by installing the earth plate 140 on the top of the earth wall wall 100 while excavating the upper ground of the earth wall wall 100,

After filling the excavation space (S1, S2) to pass the vehicle,

Further excavation of the lower ground of the upper plate structure 200 will complete the final underground structure (A) construction.

As compared with the conventional SLIT method, the earthwall wall 100 of the present invention allows the lower beam 120 to be integrated with the earthwall wall 100 from the time of manufacture so that the H beam 12 is precast member ( 41) to solve the problem of quality control by connecting separately to,

The upper beam 130 having the thumb pile function that can be installed on the top surface of the retaining wall (100) for the earth retaining plate 140 is also made integrally.

Accordingly, as shown in FIG. 2, in the barrier wall 100 of the present invention, the lower beam 120 extending from the lower portion of the wall portion 110 is integrally synthesized, and the upper beam 130 extends from the upper portion of the wall portion 110. To use the synthesized one,

The lower beam 120 serves to fix the wall portion 110 is inserted into the excavation hole 310,

The upper beam 130 serves as a thumb pile that can be installed between the earth plate of the earthen membrane between.

The construction of the top plate 200 between the top of the wall portion 110 exposed by the excavation, and by constructing the bottom plate structure 300 while excavating the lower ground of the top structure 200 underground structure using the earth wall of the final invention Will be constructed.

Thus, according to Figure 2 underground structure (A) using the earth wall of the present invention is to be constructed as both earth wall 100, the upper plate structure 200 and the bottom plate structure 300, the upper and lower beams are integrally formed in the ground It can be seen that.

[Method for constructing underground structure (A) using earthwall of the present invention: Example 1]

Figure 3a and Figure 3b shows a flow chart of the construction method of the underground structure (A) using the earth retaining wall according to the first embodiment of the present invention.

First, as shown in Figure 3a,

Both retaining wall 100 is to form an excavation hole 310 that can be inserted vertically. The excavation hole 310 may be formed through trench excavation using a trench excavator.

The excavation hole 310 by the trench excavation is preferably filled with a filler such as cement milk for maintaining the empty wall to enable the empty wall maintenance.

In the case of FIG. 3A, it can be seen that the two drilling holes 310 are spaced apart in the lateral direction, and are continuously extended in the longitudinal direction along the underground structure A.

If it is installed in such excavation hole 310 in advance by lifting and inserting the vertical wall wall 100 is transported in the vertical direction to install the side in contact with the longitudinal direction by using the shear key formed in the side, shear grooves, etc. .

Since the top wall 130 is integrally formed at the upper end and the lower beam 120 is integrally formed at the lower end of the retaining wall 100.

The lower beam 120 is inserted into the excavation hole 310 to be supported at the tip of the excavation hole 310, and the single beam 130 extends to the ground surface, and the wall part 110 is underground. It can be seen that the excavation hole 310 is formed to be located in,

At this time, the traffic is not controlled between the two excavation holes 310, it can be seen that the vehicle traffic is not controlled.

Next, the intermediate pile 160, such as the H pile, is additionally installed between the two wall walls 100, and the right tie rod 150a, such as a wire or rebar, is disposed between the upper portion of the intermediate pile 160 and the upper right beam 130. Will be connected.

The intermediate pile 160 serves as a thumb pile for installing the earth plate, and the right tie rod 150a prevents the ground from collapsing to the left side when excavating between the intermediate pile 160 and the left retaining wall 100. It will play a role.

According to Figure 3a, the right tie rod 150a is installed between the upper end of the upper beam 130 and the upper end of the intermediate pile 160 of the right retaining wall 100, it can be seen that the left ground does not control the traffic of the vehicle have.

Since the intermediate pile 160 is connected to the upper right beam 130, the intermediate pile 160 may be installed using a method of inserting the ground after drilling to correspond to the upper right beam 130, and the depth is slightly longer than the length of the upper beam. It can be seen and removed later.

Next, in the excavation space S1 formed by excavating the ground between the upper left beam 130 and the intermediate pile 160 downward, construct the upper left structure 200a on the exposed wall portion 110,

After filling the excavation space (S1) again,

Excavation space (S2) is formed by excavating between the upper plate middle pile 170 newly installed at the upper end of the upper right beam 130 and the left upper plate structure (200a).

At this time, the earth plate 140 is installed on the upper left beam 130 and the intermediate pile 160 so that the ground does not collapse into the excavation space S1 which is excavated downward.

The earth plate 140 may be used to be used in a conventional masonry structure, to be installed between the upper beam 130 spaced in the longitudinal direction while being excavated downward, sandwiched between the intermediate pile 160 spaced in the longitudinal direction do.

Accordingly, when the bottom wall portion 110 is excavated downward to the exposed depth, the left upper plate structure 200a is horizontally installed to be connected to the upper side of the left wall portion 110.

Although the left top plate structure 200a of the precast method may be used for rapid construction, it is effective to integrate with the site-casting concrete, and the right end of the left top structure 200a is horizontal through the bottom support block 210. It will be installed while supporting.

In addition, the upper plate middle pile 170 is additionally installed on the upper right side of the left upper plate structure 200a.

The reason why the upper plate intermediate pile 170 is installed separately is to install the left tie rod 150b between the upper beam 130 on the left side to form the excavation space S2 and to form the left top structure 200a and the right top structure. This is because it is difficult to secure a space for integrating the 200b with each other.

Thus, the excavation space (S1) of the upper left upper plate structure 200a is backfilled, and the left tie rod 150b is installed between the upper left upper beam 130 and the upper middle plate pile (170).

As a result, the backfill soil can be allowed to pass on the left side of the vehicle while not collapsing to the right side by the earth plate 140 installed on the upper plate middle pile 170.

In addition, the intermediate pile 160 is pulled out and the right tie rod 150a is removed, and the right ground is excavated downward to excavate downward from the ground surface so that the right upper plate structure 200b can be constructed. Will form.

Thus, as shown in Figure 3b, the excavation space (S2) is exposed to the left top structure 200a it can be seen that the right top structure 200b can be integrated with each other to construct the top plate structure 200.

When the construction of the upper plate structure 200 is completed, the excavation space (S2) is backfilled. The upper beam 130 and the upper end of the upper plate middle pile 170 may be partially cut to remain in order to allow front vehicle traffic. It can be known and removed if necessary.

Next, if the excavation space (S3) is secured by additional excavation of the ground under the upper plate structure 200, the bottom plate structure 300 may be formed between the bottom of the wall part 110, and the construction may be performed by using the site casting concrete. There will be.

[Method for constructing underground structure (A) using earthwall of the present invention: Example 2]

Figures 4a and 4b shows a flow chart of the construction method of underground structure (A) using the earth retaining wall according to the second embodiment of the present invention.

The difference from the first embodiment is that when the horizontal width of the underground structure (A) is large, there is a difference in the construction of the additional retaining wall 100 between the two retaining wall (100).

As shown in Figure 4a,

Both retaining wall 100 and the middle retaining wall 100 is to form an excavation hole 310 that can be inserted vertically. The excavation hole 310 may be formed through trench excavation using a trench excavator.

In the case of Figure 4a it can be seen that the three excavation holes 310 are spaced apart in the transverse direction, the construction is extended in accordance with the underground structure (A) continuously in the longitudinal direction.

If it is installed in such excavation hole 310 in advance by lifting and inserting the vertical wall wall 100 is transported in the vertical direction to install the side in contact with the longitudinal direction by using the shear key formed in the side, shear grooves, etc. .

Since the top wall 130 is integrally formed at the upper end and the lower beam 120 is integrally formed at the lower end of the retaining wall 100.

The lower beam 120 is inserted into the excavation hole 310 to be supported at the tip of the excavation hole 310, and the single beam 130 extends to the ground surface, and the wall part 110 is underground. It can be seen that the excavation hole 310 is formed so as to be located in this case, since traffic is not controlled between the two excavation holes 310, it can be seen that the vehicle traffic is not controlled entirely. It can be seen that the intermediate retaining wall 100 is further installed by further forming an excavation hole 310 for the wall 100.

Next, the construction between the intermediate pile 160, such as the H pile between the soil barrier wall 100, and additionally between the upper beam 130 of the upper middle intermediate pile 160 and the middle barrier wall 100, Both intermediate tie rods 150c, such as rebar, are connected.

Both of the intermediate pile 160 serves as a thumb pile to install the earth plate, both intermediate tie rods 150c when the two intermediate piles 160 and the left and right soil wall wall 100 when excavating, both intermediate piles The ground between the 160 to prevent the collapse.

According to Figure 4a, the intermediate tie rod 150c is installed between the upper end of the upper beam 130 and the upper end of both the intermediate pile 160 of the left and right retaining wall 100, so that the vehicle traffic is not controlled. have.

Since the two intermediate piles 160 are connected to the left and right upper beams 130, the intermediate piles 160 may be installed using a method of inserting and drilling the ground to correspond to the left and right upper beams 130, and the depth of both upper beams 130. It can be seen that it is slightly longer than the length and will be removed later.

Next, in the excavation space S1 formed by digging the ground between the left and right upper beams 130 and both intermediate piles 160 downward, the upper and lower wall structures 200a and 200b expose the upper part of the wall 110. Construction on,

After filling the excavation space (S1) again,

Excavation space (S2) is formed by excavating between the two upper plate intermediate piles 170 newly installed on the left and right upper plate structures (200a, 200b).

At this time, the ground plate 140 is installed on the left and right upper beams 130 and both intermediate piles 160 so that the ground does not collapse into the excavation space S1 which is excavated downward.

The earth plate 140 may be used to be used in a conventional masonry structure, and installed in the left and right upper beam 130 spaced in the longitudinal direction while being excavated downward, fitted to both intermediate piles 160 spaced in the longitudinal direction Done.

When the left and right wall portion 110 is excavated downward to the depth that is exposed, the left and right upper plate structure (200a, 200b) is installed horizontally so as to be connected to the upper left and right wall portion (110).

For the rapid construction, the precast type left top structure 200a may be used, but it is effective to integrate it with site-cast concrete, and both ends of the left and right top structure 200a and 200b may have the bottom support block 210. It is to be installed while maintaining the horizontal through.

In addition, the upper end of the upper left and right upper plate structure (200a, 200b) both upper plate intermediate piles 170 are installed upright.

The reason why the upper plate intermediate pile 170 is installed separately is to install the left and right tie rods 150a and 150b between the upper and lower beams 130 on the left and right sides to form the excavation space S2 and then form the intermediate upper plate structure. This is to secure a space for installing the 200c.

The back and the top of the excavation space (S1) of the upper plate structure (200a, 200b), and the left and right tie rods (150a, 150b) to the left and right upper beam 130 and the upper plate intermediate pile 170 It will be installed between the tops.

As a result, the backfill is able to allow left and right vehicle traffic while not being collapsed in the middle by the earth plate installed in the upper plate intermediate pile 170.

Thus, both the intermediate pile 160 is pulled out and the intermediate tie rod 150c is removed, and the excavation space is excavated downward from the ground surface so that the intermediate ground structure 200c can be constructed by digging the intermediate ground downward. ).

Thus, as shown in FIG. 4B, the left and right top structures 200a and 200b are exposed to integrate the middle top structure 200c with the left and right top structures 200a and 200b so that the top structure 200 can be constructed. It can be seen that.

When the construction of the upper plate structure 200 is completed, the excavation space (S2) is backfilled. The upper left and right upper beams 130 and the upper ends of both upper plate intermediate piles 170 are partially cut so that the front vehicle can pass. It can be seen that it can be removed and, if necessary, all can be removed.

Thus, as shown in Figure 4d, when the excavation space (S3) is secured by additional excavation of the ground of the bottom of the upper plate structure 200 when the bottom plate structure 300 is formed between the bottom of the wall portion 110, the construction using the site casting concrete You can do it.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: wall wall 110: wall portion
120: lower beam 130: upper beam
140: earth plate 150a: right tie rod
150b: left tie rod 150c: middle tie rod
160: intermediate file 170: the upper intermediate file
200a, 200b: left top structure, right top structure
200: top plate structure 300: bottom plate structure

Claims (10)

(a) extends downward from the wall portion 110 to support the integrated lower beam 120 at the tip of the excavation hole 310 formed to be spaced apart from each other in the lateral direction, and extends upward from the wall portion 110. Lifting and inserting the retaining wall 100 so that the integrated upper beam 130 is positioned on the ground surface;
(b) installing the tie rod 150 between the upper end of the intermediate pile 160 and the top of the upper beam 130 of the retaining wall 100 by constructing the intermediate pile 160 downward on the ground between the retaining wall 100. Doing;
(c) while excavating the ground between the intermediate pile 160 and the upper beam 130 of the retaining wall 100, the tie rod 150 is not installed, toward the excavation space (S1) formed by excavation Installing the earth plate 140 on the upper beam 130 of the intermediate pile 160 and the retaining wall 100 so that the ground does not collapse; And
(d) when the top of the wall portion of the earth wall in the excavation space (S1) is exposed, the step of constructing a part of the upper plate structure (200a) on the top of the wall; including,
The ground on which the tie rod is installed is an underground structure construction method using an earth retaining wall to allow construction of a portion of a top plate structure in a state where vehicle traffic is not controlled. The method of claim 1,
After step (d),
(e) further forming a top plate middle pile 170 upward from the upper surface of the end of the partially structured top plate structure 200a, and installing a earth plate on the top plate middle pile 170 to backfill the excavation space (S1). ; And
(f) excavating the ground where the tie rod 150 is installed while allowing the vehicle to pass by the backfilled excavation space (S1) to remove the intermediate pile 160 and the tie rod 150 installed together The construction of the underground structure using the earthwall wall further comprises; exposing the top plate structure (200a) first constructed in the excavation space (S2). The method of claim 2,
After step (f),
(g) completing the construction of the upper plate structure 200 by further forming the upper plate structure 200b on the exposed upper plate structure 200a;
(h) backfilling the upper plate structure 200b further formed to enable vehicle traffic; And
(i) excavating the upper plate structure 200 below to construct the bottom plate structure 300 of the underground structure. The method of claim 3,
In the step (g),
The upper plate structure 200a partially installed on the top of the wall portion is supported while being horizontally maintained through the bottom support block 210 to remove the intermediate pile 160, and thus, the upper plate structure 200b. The underground structure construction method using the earth wall to complete the construction of the upper plate structure 200 by further forming a). An underground structure using an earth wall constructed according to any one of claims 1 to 4. (a) At the tip of the three excavation holes formed to be spaced apart from each other in the transverse direction, the bottom of the wall is extended so as to support the integrated lower beam, and from the wall upwards so that the integrated upper beam is located on the ground surface. Lifting and inserting the wall;
(b) constructing both intermediate piles downwards on the ground between the barrier walls to install tie rods between the upper ends of both intermediate piles and the upper beams of the intermediate barrier walls;
(c) while excavating the ground between the intermediate pile and the upper beam of the retaining wall without the tie rods downward, the upper part of the intermediate pile and the retaining wall so that the ground does not collapse toward the excavation space (S1) formed by the excavation. Installing an earth plate on the beam; And
(d) when the top of the wall portion of the earth wall in the excavation space (S1) is exposed, the step of constructing a part of the upper plate structure (200a, 200b) on the top of the wall;
The ground on which the tie rod is installed is an underground structure construction method using an earth retaining wall to allow construction of a portion of a top plate structure in a state where vehicle traffic is not controlled. The method of claim 6,
After step (d),
(e) After further forming the upper plate intermediate pile 170 upward from the upper surface of the upper part of the structure (200a, 200b) of the partially constructed, the earth plate is installed in the upper plate intermediate pile 170 to fill the excavation space (S1) Doing; And
(f) excavating the ground where the tie rod 150 is installed while allowing the vehicle to pass by the backfilled excavation space (S1) to remove the intermediate pile 160 and the tie rod 150 installed together Method for constructing the underground structure using the earthwall wall further comprises; exposing the top plate structure (200a, 200b) first constructed in the excavation space (S2). The method of claim 7, wherein
After step (f),
(g) further forming the upper plate structure 200c on the exposed upper plate structures 200a and 200b to complete construction of the upper plate structure 200;
(h) backfilling the upper plate structure 200 further formed to enable vehicle traffic; And
(i) excavating the upper plate structure 200 below to construct the bottom plate structure 300 of the underground structure; underground construction method using a mud wall. The method of claim 8,
In the step (g),
The upper plate structures 200a and 200b partially constructed on the top of the wall part are installed while supporting the horizontal structure through the bottom support block 210 to remove the intermediate pile 160 to form the upper plate structure using the excavation space S2. Underground structure construction method using the earth wall to complete the construction of the upper plate structure 200 by further forming (200c). An underground structure using a retaining wall constructed according to any one of claims 6 to 9.

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