KR101341679B1 - Device for constructing an underground structure and method thereof - Google Patents

Device for constructing an underground structure and method thereof Download PDF

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Publication number
KR101341679B1
KR101341679B1 KR1020100095341A KR20100095341A KR101341679B1 KR 101341679 B1 KR101341679 B1 KR 101341679B1 KR 1020100095341 A KR1020100095341 A KR 1020100095341A KR 20100095341 A KR20100095341 A KR 20100095341A KR 101341679 B1 KR101341679 B1 KR 101341679B1
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South Korea
Prior art keywords
horizontal
layer
temporary
underground
installation
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KR1020100095341A
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Korean (ko)
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KR20120033683A (en
Inventor
김광만
윤상문
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(주)바로건설기술
롯데건설 주식회사
주식회사 한화건설
두산건설 주식회사
주식회사 삼우종합건축사사무소
두산중공업 주식회사
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Priority to KR1020100095341A priority Critical patent/KR101341679B1/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/045Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • E02D29/05Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
    • E02D29/055Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench further excavation of the cross-section proceeding underneath an already installed part of the structure, e.g. the roof of a tunnel

Abstract

The present invention discloses an underground structure construction apparatus and method that can improve workability and reduce working time.
The present invention is an earthen wall formed on the circumferential surface of the excavated portion to be excavated to install the underground structure, a plurality of center piles to be removable to the excavated portion, and the upper end of the center pile to be supported by the center pile The first stage horizontal structure to be installed, each layer horizontal structure installed to form a layer to the bottom surface of the excavated portion in the bottom direction of the first stage horizontal structure to support the retaining wall, and the horizontal structure of each layer the first stage horizontal structure From one side is connected to the first stage horizontal structure of the neighboring top or the angular layer horizontal structure so that it can be installed sequentially from the other side and the other side is connected to the angular layer horizontal structure of the neighboring bottom, adjustable length hypothesis connecting member and the hypothesis Can support the horizontal structure of each layer connected to the other side of the connecting member The bracket is mounted to the center pile, thereby adjusting the length of the temporary connecting member so as to fix the horizontal structure by installing the bracket in a state where the horizontal level of the horizontal structure is adjusted. .

Description

Underground structure construction device and construction method {DEVICE FOR CONSTRUCTING AN UNDERGROUND STRUCTURE AND METHOD THEREOF}
The present invention relates to an underground structure building apparatus and a method, and more particularly, to an underground structure building apparatus and a method for installing a temporary connection member that can be adjusted in length to facilitate the installation of horizontal structures on each floor.
In the construction of underground structures, the main construction methods for underground structures have been excavated from the ground to the basement ground after installing the retaining wall along the pit soil plan line and supporting external forces such as earth pressure and water pressure as temporary steel supports. Construct the structure from the bottom to the top, and then install the installation method and soil wall to dismantle the temporary steel support in order to form the steel pillars and the pile foundations extended to the foundation structure. The same method as the TOP DOWN method, which allows the construction of ground structures at the same time as the construction, has a DOWNWARD method for constructing ground structures after completing underground structures.
Applicable construction method has limitations. First, in large sites with large underground structures and deep excavation depths, it is necessary to support external forces such as earth pressure and hydraulic pressure acting on the wall, but the deformation is large as temporary steel support. Secondly, in the downtown area where buildings are densely located, this causes a large deformation of the retaining wall and damages to surrounding buildings due to ground subsidence. As a result, there is a problem of environment and civil complaints caused by noise, vibration, and dust, and fourth, there is a problem in that the construction period is lengthened since the permanent structure construction is sequentially performed after the construction of the temporary steel support.
Top down method and down method are used to solve the problem of the sticking method.
However, when the top-down method and the down-word method install a plurality of steel pillars and pile foundations extending thereafter, and install each layer structure while proceeding with excavation, a plurality of thin plates are inserted into the lower part of each layer structure. Therefore, it is difficult to adjust the horizontality of each layer structure because it uses a method of adjusting the horizontal and there is a problem that takes a lot of work time.
The object of the present invention devised in view of the above point is to provide an underground structure construction device and a method that can be easily installed and horizontal adjustment of the horizontal structure of each floor can be reduced cost and construction period.
Another object of the present invention consists of a structure for installing the horizontal structure of each layer while sequentially installing the temporary connecting member from the top to the lower direction, it is easy to maintain the vertical state between the temporary connecting member or the permanent structural pillar and each layer horizontal structure In providing an underground structure construction apparatus and method having.
Underground structure construction apparatus and method for achieving the object of the present invention as described above is an earthen wall formed on the circumferential surface of the excavated portion to be excavated to install the underground structure; A plurality of center piles to be removable to the excavation portion; A first horizontal structure installed at an upper end of the center pile to be supported by the center pile; Each layer horizontal structure is installed to form a layer to the bottom surface of the excavated portion in the bottom direction of the first horizontal structure to support the earth wall; One side is connected to the first-level horizontal structure of the neighboring top or the each-level horizontal structure so that the horizontal structure of each layer can be connected sequentially from the first-level horizontal structure, and the other side is connected to the horizontal-level structure of the neighboring bottom. Hypothesis connecting member adjustable in length; And a bracket mounted to the center pile so as to support each layer horizontal structure connected to the other side of the temporary connecting member. Including, by adjusting the length of the hypothesis connecting member to install the bracket in a state of adjusting the horizontal level of each layer horizontal structure characterized in that to fix the horizontal structure of each layer.
In addition, more preferably, the hypothesis connecting member is a turn buckle is mounted on the middle portion is adjusted in length.
Also, more preferably, both ends of the temporary connecting member are fixed by welding and bolting.
In addition, more preferably, the hypothesis connecting member is provided with at least one set of hypothesis connecting member paired with three or more.
In addition, more preferably, the horizontal structure of each layer is formed of four unit rods in the shape of a grid, the connecting member to which the temporary connecting member is connected; And a coupling member connecting the connection members to each other.
In addition, more preferably, the horizontal structure of each layer is made of a structure in which two unit rods cross each other, the connecting member is connected to the hypothesis connecting member; And a coupling member connecting the connection members to each other.
Further, more preferably, the reinforced concrete slab is further included in each horizontal structure.
Further, more preferably, the center pile is installed close to the position at which the temporary connecting member is installed so as not to overlap the temporary connecting member mounted on the horizontal structure and the first horizontal structure.
An underground structure construction method for installing an underground structure construction apparatus as described above, The first stage horizontal structure installation step of connecting the first horizontal structure consisting of the horizontal structure of each layer to the upper end of the center pile; A temporary connection member installation step of fixing one side to the first horizontal structure so as to connect the horizontal structures of each layer while excavating an excavation portion; Connecting each layer horizontal structure to serve as a retaining wall support to the other side of the temporary connecting member installation step, and installing the horizontal layer adjusting the horizontal state by adjusting the length of the temporary connecting member; And a bracket installation step of installing a bracket for supporting the horizontal structure of each layer on the center pile when the horizontal state adjustment of the horizontal layer of each layer is completed. .
In addition, more preferably, the horizontal structure installation step of each layer connection member installation step of installing by connecting the connection member to the other end of the temporary connection member; A length adjusting step of adjusting a length of the temporary connecting member by adjusting a fastening amount of a turnbuckle mounted at an intermediate portion of the temporary connecting member so that the level of the connecting member can be adjusted in a state where the connecting member is installed; And a coupling member installation step of installing coupling members connecting each of the connection members.
In addition, more preferably, the hypothetical connecting member is provided with a set of hypothetical connecting member pairing three or more so that the connecting member can support three or more points.
In addition, more preferably, the earth retaining wall installation step of installing the earth retaining wall on the circumferential surface of the excavated portion to install the underground structure; And entering the center file so that the plurality of center files can be removed at a point to be excavated. Then, the first stage structure installation step is performed.
Further, more preferably, when the reinforced concrete slab is installed after completing the horizontal structure installation step of each layer, the temporary connection member dismantling step of removing the temporary connecting member before the reinforced concrete slab is installed.
As described above, the underground structure construction apparatus and the construction method according to the present invention have an effect of shortening the construction period since the installation and horizontal adjustment of horizontal structures of each floor are easy by using a temporary connection member.
In addition, since it is possible to install the temporary connecting member in sequence, it is easy to maintain the vertical state between the temporary connecting member and the horizontal structure of each layer, there is an effect that the workability is improved.
In addition, by constructing an underground structure using a reusable center pile that can be removed and used instead of steel pillars and pile foundations that require a lot of expensive materials and construction period, there is an effect of shortening the construction period and reducing the construction cost.
1 is a cross-sectional view showing an underground structure building apparatus according to an embodiment of the present invention,
2 to 10 is a state diagram showing the process of construction of the underground structure building apparatus,
2 is a state diagram showing a state in which the center file is installed,
3 is a state diagram showing a state in which the bracket is installed in the center file,
4 is a state diagram showing a state in which the first stage horizontal structure is installed,
5 is a state diagram illustrating a state in which a temporary connection member is installed and a connection member of each horizontal structure is connected;
Figure 6 is a state diagram showing a state in which a bracket for supporting the connection member of the horizontal structure of each layer is installed,
7 is a state diagram showing a state in which the installation of the horizontal structure of each layer is completed and the temporary connection member is removed;
8 is a state diagram showing a state where the reinforced concrete foundation is installed,
9 is a state diagram showing a state in which the permanent structure pillar is installed,
10 is a state diagram showing a state in which the center file is removed and construction is completed.
Hereinafter, with reference to the accompanying drawings, an underground structure construction apparatus which is a preferred embodiment of the present invention in more detail as follows.
1 is a cross-sectional view showing an underground structure construction apparatus according to an embodiment of the present invention, Figure 2 to Figure 10 is a state diagram showing the process of construction of the underground structure construction apparatus, Figure 2 shows a state in which the center pile is installed 1 is a state diagram, Figure 3 is a state diagram showing a state in which the bracket is installed in the center pile, Figure 4 is a state diagram showing a state in which the first stage horizontal structure is installed, Figure 5 is a temporary connection member is installed and the connection of the horizontal structure of each layer 6 is a state diagram illustrating a state in which members are connected, and FIG. 6 is a state diagram illustrating a state in which a bracket for supporting a connecting member of each layer horizontal structure is installed, and FIG. 7 is a state in which the installation of each layer horizontal structure is completed and the temporary connecting member is removed. 8 is a state diagram showing a state in which a reinforced concrete foundation is installed, and FIG. 9 shows a state in which a permanent structural column is installed. 10 is a state diagram showing a state in which the center pile is removed and construction is completed.
As shown, an underground structure building apparatus according to an embodiment of the present invention includes a soil wall 10 formed by being pressed along the circumferential surface of the excavation portion, and a plurality of center piles 20 to be removed to the excavation portion. , The first stage horizontal structure 30 is installed at the upper end of the center pipe 20 to support the earth pressure of the retaining wall 10, and fixed to the first stage horizontal structure 30 and extends downward The hypothesis connecting member 40 is adjustable in length, the hypothesis connecting member 40 is supported on the end and consists of a horizontal structure 50 of each layer supporting the retaining wall 10 together with the first horizontal structure 30, the hypothesis The connection member 40 and each layer horizontal structure 50 is sequentially installed in accordance with the depth to be excavated to form an underground floor. And the installation of each layer horizontal structure 50 is completed and the permanent structure pillar 80 is removed and installed to remove the temporary connection member 40 is further included.
The center pile 20 is formed in a shape of entering into more than the depth to be excavated. The section steel and the section steel to be described later include all of the general structure used as a building frame, such as H beam, steel pipe and square tube. The center pile 20 has a permanent structure so as not to overlap with the permanent structural column 80 installed at a position capable of stably supporting the horizontal structure 50 and the first stage horizontal structure 30 after removing the center pile 20. It is installed at a position close to the pillar (80). In addition, the center pile 20 is provided with a bracket 21 protruding to support the first horizontal structure 30 or each layer horizontal structure 50.
The first stage horizontal structure 30 and each layer horizontal structure 50 is composed of a permanent structure. The first stage horizontal structure 30 and each layer horizontal structure 50 is made of a section steel and are bonded to each other by bolting or welding.
The first stage horizontal structure 30 is composed of a connecting member 32 for connecting the connecting member 31 and each connecting member 31. The connecting member 31 has a structure in which four unit rods form a lattice shape, and the temporary connecting member 40 is suspended. Permanent structural column 80 is most preferably installed at the center of the connecting member (31).
The connecting member 31 is most preferably arranged in a lattice shape, but the two unit rods are made to intersect with each other, and may be configured in a structure in which the permanent structural pillars 80 are installed at the crossing portions.
Like the first stage horizontal structure 30, each layer horizontal structure 50 is composed of a connecting member 51 and a connecting member 52 for connecting each connecting member 51. The connecting member 51 has a structure in which four unit rods form a lattice shape, and is suspended from the temporary connecting member 40. Permanent structural column 80 is most preferably installed at the center of the connecting member (51).
The connecting member 51 is also most preferably arranged in a lattice shape, but may be configured such that the two unit rods cross each other, and the permanent structural pillar 80 is installed at the crossing portion.
Hypothesis connecting member 40 is installed by connecting each layer horizontal structure 50 sequentially from the first stage horizontal structure (30). That is, one side is connected to the first stage horizontal structure 30 or each layer horizontal structure 50 of the neighboring top and the other side is connected to the horizontal structure 50 of each layer neighboring bottom and turnbuckle in the middle to enable the length adjustment ( 41) is mounted. Both ends of the hypothetical connecting member 40 is preferably fixed by welding and bolting, but not limited to welding or bolting fastening method, but also fixed using a variety of methods commonly used to connect steel in general. can do. In addition, the hypothesis connecting member 40 is preferably provided with at least one set of hypothesis connecting member paired three or more. Hypothesis connecting member 40 is made of a long rebar or made of a wire.
By adjusting the length according to the fastening amount of the turnbuckle 41, the bracket 21 is installed in a state in which the horizontal level of each horizontal structure 50 is adjusted to fix each horizontal structure 50. The method of adjusting the length of the hypothesis connecting member 40 is not limited to the method using the turn buckle, but other methods can be used, but it is most preferable to use the turnbuckle 41.
In the case of forming a wide interval between the horizontal structures 50 of each layer while the excavation proceeds, a temporary horizontal structure may be formed between the horizontal structures 50 to withstand the earth pressure of the retaining wall 10. Hypothesis horizontal structure is made of a structure for supporting the retaining wall 10 with a section steel so as to withstand earth pressure across the excavation hole, such as each horizontal structure (50). Hypothesis horizontal structures are not permanent structures but structures that are later dismantled.
Reinforced concrete slabs are installed in the first stage horizontal structure 30 or each layer horizontal structure 50. Reinforced concrete slab 11 is formed of a rim reinforcement member 12 for reinforcing the edge portion of each layer horizontal structure 50 or the first stage horizontal structure 30 made of reinforced steel with reinforced concrete by a predetermined width, the edge reinforcement member 12 ) Is filled between the coupling members (32, 52), or is formed of a structure that is filled on and between the cross-section of the first horizontal structure 30 or each layer horizontal structure (50). Edge reinforcement member 12 is connected to the reinforcement member is reinforced with reinforced concrete between the coupling member (32, 52).
Edge reinforcement member 12 and the reinforcement member is formed on the upper surface of the shape forming the first stage horizontal structure 30 or each layer horizontal structure 50, between the first stage horizontal structure 30 or each layer horizontal structure 50 As shown in FIG. 5, the first stage horizontal structure 30 or each layer horizontal structure 50 is formed in a structure filled on and between the cross-sections. Edge reinforcement member 12 and the reinforcement member serves to evenly support the earth pressure generated in the retaining wall (10). In addition, when the reinforcing member is formed between the coupling member (32, 52) serves to prevent the deflection of the shape steel by reinforcing the strength of the shape steel.
Reinforcing coltreat foundation 14 is formed on the bottom surface of the excavation is completed excavation, the lowermost permanent structural column 80 is fixed to the reinforced concrete foundation (14). Permanent structural column 80 is made of reinforced concrete so that the bearing capacity can be reinforced.
Underground structure construction apparatus is a preferred embodiment of the present invention configured as described above, when constructing the underground structure of two or more basement floors by repeatedly performing the process of installing the temporary connection member 40 and each floor horizontal structure 50 Underground structures of two or more floors can be constructed.
As described above, the underground structure construction apparatus according to the present invention installs the horizontal structures 50 on each floor while extending the temporary connecting member 40 from the first horizontal structure 30 in the lower direction while the excavation work is carried out, and reinforced concrete foundation The lowermost permanent structural column 80 is fixed to 14, and after the layered permanent column 80 is installed, the center pile 20 is removed.
In addition, reinforced concrete is reinforced on the retaining wall 10 to form a permanent wall.
Referring to the construction process of the underground structure construction device configured as described above in more detail as follows.
As shown in FIG. 2, after proceeding with the installation of the retaining wall for installing the retaining wall 10 to install the retaining wall 10 on the circumferential surface of the excavating portion, the plurality of center piles 20 are removed from the excavating portion. Implement a center file entry step to enable access. At this time, the center pile 20 is placed in the vicinity so as not to contact the point where the temporary connection member 40 to be installed later.
After proceeding the excavation by a predetermined depth as shown in Figure 3, by installing the bracket 21 is prepared to install the first stage horizontal structure (30). The bracket 21 is formed in the center pile 20 at regular intervals so as to support the horizontal structure 50 each layer is sequentially installed.
When the installation of the bracket 21 is completed, the first horizontal structure 30 is installed on the bracket 21 as shown in FIG. 4. When the installation of the first stage horizontal structure 30 is completed, the concrete slab 11 and the edge reinforcing member 12 and the reinforcing member is installed thereon. In this case, the temporary connection member 40 may be tied to the connection member 31 each month.
Then, as shown in FIG. 5, the excavation is further performed, and the hypothesis connecting member 40 is released to hang down. Then, the connecting member 51 of each horizontal structure 50 is connected to the end of the temporary connecting member 40. When the connection of the connecting member 51 is completed by adjusting the turnbuckle 41 of the temporary connecting member 40 to adjust the length of the temporary connecting member 40, thereby adjusting the horizontal degree of the connecting member 51.
When the horizontal adjustment is completed, as shown in Figure 6 to install the bracket 21 to the center pile 20 to support the connection member 51.
Then, as shown in Figure 7 performs a coupling member installation step of installing a coupling member 52 for connecting the connection member 51. When the installation of each floor horizontal structure 50 is completed, the temporary connection member 40 installed is removed. Then carry out further digging to the next floor. According to the underground depth to be excavated, the installation step of the temporary connection member 40 and the horizontal structure installation step of each layer and the temporary connection member 40 are removed repeatedly.
As shown in FIG. 8, the concrete slab 11, the edge reinforcement member 12, and the reinforcement member are installed in each horizontal structure 50. And the reinforced concrete foundation 14 is installed in the bottom surface.
When the installation of the reinforced concrete foundation 14 is completed, as shown in Figure 9 to install the permanent structure 80 in order from the bottom. While installing the permanent structure 80 to the reinforced wall 10 to the reinforced concrete to achieve a permanent wall. And the installation of the permanent structure (80), each layer horizontal structure (50) or first stage horizontal structure (30) was placed in the non-pouring site of iron concrete concrete.
After installing the reinforced concrete foundation 14 and the permanent structural pillars 80 for each floor, the center pile 40 is removed as shown in FIG. 10.
When the removal of the center pile 40 is completed, the installation of the underground structure is completed.
Thus, the underground structure construction apparatus and method according to the present invention by installing the temporary connection member 41, by adjusting the length of the temporary connection member 40 in a suspended state connecting member 51 to the temporary connection member 40 After adjusting the level of the connecting member 51, and using the method of installing the bracket 21, it is conventional to adjust the level by hanging a flat iron plate or the like between the bracket on which the connecting member 51 is placed In comparison, work time is shortened and workability is improved.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.
10: retaining wall 11: concrete slab
14: reinforced concrete foundation 20: center pile
21: bracket 30: the first horizontal structure
31, 51: connecting member 32, 52: coupling member
40: temporary connection member 41: turnbuckle
80: permanent structural column

Claims (13)

  1. An earth retaining wall formed on the circumferential surface of the excavated portion to be excavated to install the underground structure;
    A plurality of center piles to be removable to the excavation portion;
    A first horizontal structure installed at an upper end of the center pile to be supported by the center pile;
    Each layer horizontal structure is installed to form a layer to the bottom surface of the excavated portion in the bottom direction of the first horizontal structure to support the earth wall;
    One side is connected to the first-level horizontal structure of the neighboring top or the each-level horizontal structure so that the horizontal structure of each layer can be connected sequentially from the first-level horizontal structure, and the other side is connected to the horizontal-level structure of the neighboring bottom. Hypothesis connecting member adjustable in length;
    A bracket mounted to the center pile to support each horizontal structure connected to the other side of the temporary connecting member; And
    Including a permanent structural column installed to permanently support the respective horizontal structures and the first horizontal structures supported by the brackets.
    By adjusting the length of the hypothesis connecting member to install the bracket in a state in which the horizontal level of the horizontal structure of each layer is fixed to the horizontal structure of each layer,
    The center pile is installed close to the position where the temporary connection member is installed,
    The temporary connecting member is removed before the reinforced concrete slab is installed after the installation of the horizontal structure of each layer,
    The horizontal structure of each layer has four unit rods formed in a lattice shape, and includes a connection member to which the temporary connection member is connected and a coupling member to connect the connection member to each other.
    The center pile and the bracket are removed after installing the permanent structural pillar,
    The permanent structure pillar is an underground structure construction device, characterized in that made of reinforced concrete so that the bearing capacity can be reinforced.
  2. The method of claim 1,
    The hypothesis connecting member is an underground structure building apparatus, characterized in that the length is adjusted by mounting a turnbuckle in the middle.
  3. The method of claim 2, wherein both ends of the temporary connecting member is an underground structure building apparatus, characterized in that fixed by welding and bolting.
  4. The method of claim 2, wherein the hypothesis connecting member
    Underground structure building apparatus, characterized in that at least one set of three or more paired hypothesis connecting member is installed.
  5. delete
  6. delete
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  9. As a method of constructing an underground structure for installing the underground structure construction apparatus according to claim 1,
    A first stage horizontal structure installation step of connecting a first stage horizontal structure consisting of the horizontal structures of each layer to an upper end of the center pile;
    A temporary connection member installation step of fixing one side to the first horizontal structure so as to connect the horizontal structures of each layer while excavating an excavation portion;
    Connecting each layer horizontal structure to serve as a retaining wall support to the other side of the temporary connecting member installation step, and installing the horizontal layer adjusting the horizontal state by adjusting the length of the temporary connecting member;
    Bracket installation step of installing a bracket for supporting the horizontal structure of each layer on the center pile when the horizontal state of the horizontal layer of the each layer is completed;
    A temporary connecting member removing step of removing the temporary connecting member before the reinforced concrete slab is installed;
    Installing a permanent structural column to permanently support the respective horizontal structures and the first horizontal structures supported by the brackets; And
    Removing the center pile and the bracket after installing the permanent structural column;
    The center pile is installed close to the position where the temporary connection member is installed,
    The horizontal structure of each layer includes four unit rods having a lattice shape and a connecting member to which the temporary connecting member is connected, and a connecting member to connect the connecting members to each other.
    The permanent structure pillar is an underground structure construction method, characterized in that made of reinforced concrete so that the bearing capacity can be reinforced.
  10. 10. The method of claim 9, wherein the horizontal structure installation step of each layer
    A connection member installation step of connecting and installing a connection member at the other end of the temporary connection member;
    A length adjusting step of adjusting a length of the temporary connecting member by adjusting a fastening amount of a turnbuckle mounted at an intermediate portion of the temporary connecting member so that the level of the connecting member can be adjusted in a state where the connecting member is installed; And
    Underground structure construction method comprising a coupling member installation step of installing a coupling member for connecting each of the connecting members.
  11. The method of claim 10, wherein the hypothesis connecting member
    Underground structure construction method characterized in that three or more pairs of hypothesis connecting member is installed to support the connection member three or more points.
  12. The method of claim 9,
    A barrier wall installation step of installing a barrier wall on the circumferential surface of the excavated portion to install an underground structure; And
    Underground structure construction method comprising the step of entering the center pile so that the plurality of center piles to be removable at the point to be excavated; after the first stage structure installation step.
  13. delete
KR1020100095341A 2010-09-30 2010-09-30 Device for constructing an underground structure and method thereof KR101341679B1 (en)

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PCT/KR2011/007196 WO2012044091A2 (en) 2010-09-30 2011-09-29 Device and method for constructing underground structure

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