KR102068320B1 - block assembly of module type and construction method of tunnel - Google Patents

Abstract

The present invention relates to a modular block assembly for tunnel construction and a tunnel construction method using the same, and more particularly, to a block assembly and a tunnel construction method using the same to increase the reinforcement of the excavation surface and easy construction of the tunnel.
The modular block assembly for tunnel construction according to the present invention includes a base block fixed to the ground and fixed to the left and right sides of an excavation passage, and a plurality of first rebar exposed portions formed by exposing reinforcing bars embedded in the base block to the outside; An intermediate block coupled to the upper portion of the base block, a plurality of second rebar exposed portions formed by exposing the reinforcement embedded in the intermediate block to the outside, an upper block coupled to the upper portion of the intermediate block, and reinforcement embedded in the upper block And a plurality of third rebar exposed portions formed by exposing the outside, first coupling means for coupling the base block and the intermediate block, and second coupling means for coupling the intermediate block and the upper block.

Description

Modular block assembly for tunnel construction and tunnel construction method using same {block assembly of module type and construction method of tunnel}

The present invention relates to a modular block assembly for tunnel construction and a tunnel construction method using the same, and more particularly, to a block assembly and a tunnel construction method using the same to increase the reinforcement of the excavation surface and easy construction of the tunnel.

In general, in order to construct a tunnel, the process proceeds in the order of tunnel excavation, reinforcement, and installation of concrete lining. The above-described concrete lining uses an in-site casting lining method in which concrete is directly cast in the field to produce lining. .

After excavation, reinforcing shotcrete (SHOTCRETE) is placed on the excavation surface to uniform the excavation surface, and then the nonwoven fabric or waterproof sheet is attached to the outer surface of the shotcrete. Then, after attaching the nonwoven fabric or the waterproof sheet to the outer surface of the shotcrete, the formwork is installed there, and the concrete is poured on the inside, and curing is formed to form a lining.

Conventional tunnel construction methods have various problems, and thus, various rewritten tunnel construction methods are known.

Republic of Korea Patent No. 10-0785459 discloses a tunnel construction method using precast concrete lining.

The tunnel construction method includes the steps of constructing a tunnel excavation part by excavating the ground; Constructing shotcrete lining by spraying shotcrete on the excavation surface of the tunnel excavation part and constructing the tunnel bottom surface by pouring concrete into the bottom portion of the tunnel; Installing a rail portion on the tunnel bottom surface of which a top surface is slid by application of a friction reducing material; And constructing the tunnel lining by placing a plurality of precast concrete lining units, which are prefabricated to have an arcuate cross section according to the cross-sectional shape and dimensions of the tunnel, on the rails, and then advancing into the tunnel excavation section to be integrally combined. Include.

This construction method has some advantages in that tunnel prefabricated precast concrete linings are pushed into the excavation part of the tunnel in order to construct the tunnel lining. have.

Republic of Korea Patent No. 10-0785459: Tunnel construction method using precast concrete lining

The present invention was created to improve the above problems, by forming a single concrete module in the manner of assembling a plurality of blocks in the field is easy to transport and construction and to increase the reinforcement of the excavation surface and using the same The purpose is to provide a tunnel construction method.

Tunnel construction modular block assembly of the present invention for achieving the above object is a base block which is fixed to the ground and respectively seated on both sides of the excavation passage; A plurality of first reinforcing bar exposed portions formed by exposing reinforcing bars embedded in the base block to the outside; An intermediate block coupled to an upper portion of the base block; A plurality of second rebar exposure parts formed by exposing the reinforcing bars embedded in the intermediate block to the outside; An upper block coupled to an upper portion of the intermediate block; A plurality of third rebar exposure parts formed by exposing the reinforcing bars embedded in the upper block to the outside; First coupling means for coupling the base block and the intermediate block; And a second coupling means for coupling the intermediate block and the upper block.

The first coupling means may include a first coupling plate coupled to an upper portion of the base block, a first support plate formed by bending downwardly from an end of the first coupling plate, and coupled to a lower portion of the intermediate block to the first coupling plate. A plate and a second coupling plate nested with a second support plate bent upward from the end of the second coupling plate, the second coupling means comprising: a third coupling plate coupled to an upper portion of the intermediate block; A third support plate bent downward from the end of the third coupling plate, a fourth coupling plate coupled to the lower portion of the arch block and overlapping with the third coupling plate, and upward from an end of the fourth coupling plate; A fourth support plate is bent and formed.

And the tunnel construction method of the present invention for achieving the above object comprises a base block seating step of seating the base block on each of the left and right sides of the excavation passage after the excavation passage formed at a predetermined distance; A base block fixing step of fixing the base block to the ground; An intermediate block seating step of seating an intermediate block on an upper portion of the base block; A first coupling step of coupling the intermediate block and the base block by a first coupling means; An upper block seating step of seating an upper block on an upper portion of the intermediate block to form an arch block assembly; A second coupling step of coupling the intermediate block and the upper block with a second coupling means; A formwork installation step of installing an arch formwork in an inward direction of the block assembly to be spaced apart from the block assembly; It includes; concrete placing step of placing concrete between the block assembly and the formwork.

The base block fixing step fixes the fixing plate coupled to the bottom of the base block to the ground with a fixing member.

The base block fixing step is to fix the fixing plate with the fixing member and then install a brace to further fix the base block, the bottom of the brace is coupled to the pile embedded in the ground and the top of the brace embedded in the base block The exposed reinforcing bar is bonded to the first reinforcing bar exposed part formed by exposing to the outside.

As described above, the present invention forms a single concrete module in a manner of assembling a plurality of blocks in the field, thereby making it easy to transport and construct and increase reinforcement of the excavation surface.

In addition, the present invention is to excavate only the space for installing one block assembly without excavating the tunnel all at once and then proceed with the construction in a modular manner to form a block assembly suitable for the excavated space by assembling three types of blocks The risk of buckling is low and has the advantage of shortening the air.

1 is a perspective view of a base block applied to the block assembly of the first embodiment of the present invention,
2 is a perspective view of an intermediate block applied to the block assembly of the first embodiment of the present invention,
3 is a perspective view of an upper block applied to the block assembly of the first embodiment of the present invention,
4 and 5 are front views showing the construction method of the tunnel using the block assembly of the first embodiment of the present invention,
6 is a front view showing another example of the construction method of the tunnel of the present invention,
7 is a perspective view of a base block applied to the block assembly of the second embodiment of the present invention,
8 is a perspective view of an intermediate block applied to the block assembly of the second embodiment of the present invention,
9 is a perspective view of an upper block applied to a block assembly of a second embodiment of the present invention;
10 is a front view showing a tunnel construction method using the block assembly of the second embodiment of the present invention,

Hereinafter, a modular block assembly for tunnel construction and a tunnel construction method using the same will be described in detail with reference to the accompanying drawings.

1 to 4, the modular block assembly for tunnel construction according to an embodiment of the present invention is largely seated on both the left and right sides of the excavation passage (1) base block 10 and the base block fixed to the ground, A plurality of first reinforcing bar exposed portions 17 formed by exposing the reinforcement embedded in the (10) to the outside, the intermediate block 30 is coupled to the upper portion of the base block 10, and embedded in the intermediate block (30) A plurality of second rebar exposure portion 37 formed by exposing the reinforcing bars to the outside, the upper block 50 is coupled to the upper portion of the intermediate block 30, and the reinforcing bars embedded in the upper block 50 to the outside A plurality of third rebar exposure portion 57 formed by exposure, the first coupling means for coupling the base block 10 and the intermediate block 30, the intermediate block 30 and the upper block 50 is coupled It has a second coupling means for making.

The base block 10 is seated on both left and right sides of the excavation passage 1 to serve to support the intermediate block 30.

The base block 10 is formed of a lower body 11 and an upper body 13 formed on the lower body 11.

The lower body 11 is formed to extend outwardly of the upper body 13. The lower body 11 expands the contact area with the ground to increase the bearing capacity.

The upper body 13 is formed to bend similar to the arch shape of the tunnel.

The first coupling jaw 15 is formed on the upper portion of the upper body 13. The first coupling jaw 15 is formed to protrude above the upper body 13. The first coupling jaw 15 is coupled to the coupling groove 35 formed in the lower portion of the intermediate block 30 to increase the coupling force between the blocks. As shown in FIG. 7, the first coupling jaw may not be formed in the upper body 13.

The base block 10 described above is formed of concrete. Inside the base block 10 is embedded several strands of rebar. A part of the rebar embedded in the base block 10 is exposed to the outside to form the first rebar exposed portion 17.

The first rebar exposed portion 17 may be formed on the inner surface, the upper surface and the bottom surface of the base block 10. The first rebar exposed portion formed on the upper surface of the base block 10 is welded to the first coupling plate 25 to be described later, and the first rebar exposed portion formed on the bottom surface of the base block 10 is welded to the fixing plate 20 to be described later. Can be combined.

The first rebar exposed portion 17 positioned on the inner side of the base block 10 may be formed to be bent in a U shape.

The intermediate block 30 is coupled to the top of the base block 10. Intermediate block 30 is installed one by one on the left and right side of the tunnel, otherwise two or three or more may be arranged in a row of course.

The intermediate block 30 is formed to bend similar to the arch shape of the tunnel. The intermediate block 30 has a coupling groove 35 formed at a lower portion thereof, and a second coupling jaw 31 formed at an upper portion thereof. The second coupling jaw 31 is coupled to the coupling groove 53 formed in the lower portion of the upper block 50 to increase the coupling force between the blocks. As shown in FIG. 8, the coupling block and the second coupling jaw may not be formed in the intermediate block 30.

The intermediate block 30 is formed of concrete. Inside the intermediate block 30 is embedded several strands of rebar. A part of the rebar embedded in the intermediate block 30 is exposed to the outside to form a second rebar exposed portion 37.

Second rebar exposure portion 37 may be formed on the inner surface, the upper surface, the bottom surface of the intermediate block 30, respectively. The second rebar exposing portion formed on the bottom of the intermediate block 30 is welded to the second coupling plate 40 to be described later, and the first reinforcing bar exposing portion formed on the upper surface of the intermediate block 300 is the third coupling plate 45 to be described later. And welded together.

The second rebar exposed portion 37 positioned on the inner side of the intermediate block 30 may be formed to be bent in a U shape.

The upper block 50 is coupled to the upper portion of the intermediate block 30. Therefore, one side of the upper block 50 is coupled to the upper portion of the intermediate block 30 located on the left side of the excavation passage (1), the other side of the upper block 50 is the intermediate block 30 located on the right side of the excavation passage (1) ) Is coupled to the top. In the illustrated example, the upper block is composed of one block. Alternatively, a plurality of blocks may be combined to form one upper block.

The upper block 50 is formed to bend similar to the arch shape of the tunnel. Coupling grooves 53 are formed at left and right sides of the upper block 50. The second coupling jaw 31 of the intermediate block 30 positioned on the left and right sides is coupled to the coupling groove 53 of the upper block, respectively. 9, the coupling groove may not be formed in the upper block 50.

The upper block 50 is formed of concrete. Inside the upper block 50 is embedded several strands of rebar. A part of the rebar embedded in the upper block 50 is exposed to the outside to form a third rebar exposed portion 57.

The third rebar exposed portion 57 may be formed on the inner side and the lower left and right sides of the upper block 50, respectively. The second rebar exposing portions formed on the lower left and right sides of the upper block 50 may be welded to the fourth coupling plate 60 to be described later.

The third rebar exposed portion 57 positioned on the inner side surface of the upper block 50 may be formed to be bent in a U shape.

The fixing means serves to fix the base block 10 to the ground. An example of the fixing means includes a fixing plate 20 coupled to the bottom of the base block 10 and a fixing member for fixing the fixing plate 20 to the ground.

The fixed plate 20 is welded to the first rebar exposed portion formed on the bottom of the base block as described above.

An anchor bolt 70 embedded in the ground as a fixing member, and a nut 73 for fixing the anchor bolt 70 to the fixing plate 20. Unlike this, the fixing plate 20 may be coupled to the anchor bolt 70 by welding.

The first coupling means firmly couples the base block 10 and the intermediate block 30.

The first coupling means includes a first coupling plate 25 coupled to an upper portion of the base block 10, a first support plate 27 formed by bending downward from an end of the first coupling plate 25, and an intermediate block ( 30 is coupled to the lower portion of the first coupling plate 25 and overlapping with the second coupling plate 40 and a second support plate 43 formed by bending upwardly at the end of the second coupling plate 40 .

The first coupling plate 25 is coupled to the upper portion of the first coupling jaw 15. The first coupling plate 25 may be formed of a metal plate. A plurality of through holes 26 are formed in the first coupling plate 25 at regular intervals. The first coupling plate 25 may be welded to the first rebar exposed portion exposed to the upper portion of the base block 10. An end of the first coupling plate 25 protrudes in the inner surface direction of the base block 10. The first support plate 27 is formed at the end of the protruding first coupling plate 25. The first support plate 27 is formed to be bent downward at the end of the first coupling plate 25.

The second coupling plate 40 is coupled to the lower portion of the intermediate block 30. The second coupling plate 40 may be formed of a metal plate. A plurality of through holes 41 are formed in the second coupling plate 40 at regular intervals. The second coupling plate 40 may be welded to the second rebar exposed portion exposed to the lower portion of the intermediate block 30. The end of the second coupling plate 40 protrudes in the inner surface direction of the intermediate block 30. A second support plate 43 is formed at the end of the protruding second coupling plate 40. The second support plate 43 is formed to be bent upward at the end of the second coupling plate 40.

The intermediate block 30 is seated on the upper portion of the base block 10 to align the through holes 26 and 41 formed in the first and second coupling plates 25 and 40, and then bolt 23. After inserting the nut 24 may be fastened to couple the first coupling plate 25 and the second coupling plate 40. In addition, of course, the first coupling plate 25 and the second coupling plate 40 may be coupled by welding.

The second coupling means serves to couple the intermediate block 30 and the upper block 50.

The second coupling means includes a third coupling plate 45 coupled to the upper portion of the intermediate block 30, a third support plate 47 formed by bending downwardly from the end of the third coupling plate 45, and an upper block ( 50 is coupled to the lower portion of the third coupling plate 45 and overlapping with the fourth coupling plate 60 and the fourth support plate 63 formed by bending upward from the end of the fourth coupling plate 60 .

The third coupling plate 45 is coupled to the upper portion of the second coupling jaw 31. The third coupling plate 45 may be formed of a metal plate. A plurality of through holes 46 are formed in the third coupling plate 45 at regular intervals. The third coupling plate 45 may be welded to the second rebar exposed portion exposed to the upper portion of the intermediate block 30. The end of the third coupling plate 45 protrudes in the inner surface direction of the intermediate block 30. A third support plate 47 is formed at the end of the protruding third coupling plate 45. The third support plate 47 is formed to be bent downward at the end of the third coupling plate 45.

The fourth coupling plate 60 is coupled to the lower left and right sides of the upper block 50, respectively. The fourth coupling plate 60 may be formed of a metal plate. A plurality of through holes 61 are formed in the fourth coupling plate 60 at regular intervals. The fourth coupling plate 60 may be welded to the third rebar exposed portion exposed to the lower left and right sides of the upper block 50 by welding. An end portion of the fourth coupling plate 60 protrudes in the inner surface direction of the upper block 50. A fourth support plate 63 is formed at the end of the protruding fourth coupling plate 60. The fourth supporting plate 63 is formed to be bent upward at the end of the fourth coupling plate 60.

The upper block 50 is seated on the upper part of the intermediate block 30 to match the through holes 46 and 61 formed in the third coupling plate 45 and the fourth coupling plate 60, and then insert a bolt. Then, the third coupling plate 45 and the fourth coupling plate 60 may be coupled by fastening the nut. In addition, of course, the third coupling plate 45 and the fourth coupling plate 60 may be welded.

As such, the base block 10, the intermediate block 30, and the upper block 50 are assembled in an arch form by the fixing means and the first and second coupling means to form a module. One module uses two base blocks 10, two intermediate blocks 30, and one upper block 50.

As such, the present invention can be used to construct the tunnel using a modular block assembly in the form of an arch to increase the reinforcement of the excavation surface and simplify the construction of the tunnel.

Hereinafter, a method of constructing a tunnel using the modular block assembly of the present invention described above with reference to FIGS. 1 to 5 will be described.

In the tunnel construction method of the present invention, after forming a predetermined distance excavation passage 1, three types of blocks 10, 30, and 50 are assembled to install a modular block assembly inside the excavation passage 1. Then, after the formwork 80 is installed inside the block assembly, concrete is placed in the space between the block assembly and the formwork to form a concrete lining.

Once the concrete lining is formed, it is excavated again for a certain distance. Newly drilled excavation passages are repeated to form secondary concrete lining.

Repeat this process to construct the tunnel.

Specifically, the tunnel construction method according to an embodiment of the present invention and the base block seating step of seating the base block 10 on each of the left and right sides of the excavation passage (1) after forming the excavation passage 1 of a predetermined distance, and A base block fixing step of fixing the base block 10 to the ground, an intermediate block seating step of seating the intermediate block 30 on top of the base block 10, and an intermediate block 30 and the base block 10; A first coupling step of coupling with a first coupling means, an upper block seating step of seating an upper block 50 on an upper portion of the intermediate block 30 to form an arch block assembly, and an intermediate block 30 and an upper portion The second coupling step of coupling the block 50 to the second coupling means, the form installation step of installing the arch formwork 80 in the inner direction of the block assembly so as to be spaced apart from the block assembly, block assembly and formwork 80 Concrete placing step of placing concrete between It includes.

First, the excavation passage 1 is formed at a predetermined distance from the point of the entrance of the tunnel. And base blocks 10 are respectively seated on both left and right sides of the excavation passage (1).

When the base block 10 is seated, the base block 10 is fixed to the ground. To this end, the fixing plate 20 is coupled to the anchor bolt 70 embedded in the ground, and then the nut 73 is fastened. Of course, welding can be used as a joining method.

Next, the intermediate block 30 is lifted to seat the intermediate block 30 on the base block 10.

And the intermediate block 30 is coupled to the intermediate block 30 and the base block 10 by the first coupling means in a state seated on the upper portion of the base block 10. When the intermediate block 30 is seated on the top of the base block 10, the first coupling plate 25 and the second coupling plate 40 are stacked. In this state, the bolts 23 are inserted into the through holes 26 and 41 formed in the first and second coupling plates 25 and 40, and then the nuts 24 are fastened to the first coupling plate 25. The second coupling plate 40 is firmly coupled. Unlike this, of course, the first coupling plate 25 and the second coupling plate 40 may be joined by welding.

Next, the upper block 50 is lifted to seat the upper block 50 on top of the intermediate block 30.

And the upper block 50 is coupled to the upper block 50 and the intermediate block 30 in the state seated on the upper portion of the intermediate block 30 by a second coupling means. When the upper block 50 is seated on the upper portion of the intermediate block 30, the third coupling plate 45 and the fourth coupling plate 60 are stacked. In this state, a bolt is inserted into the through holes 46 and 61 formed in the third and fourth coupling plates 45 and 60, and then the nut is fastened to the third coupling plate 45 and the fourth coupling plate 60. ) Firmly combined. Unlike this, of course, the third coupling plate 45 and the fourth coupling plate 60 may be joined by welding.

As such, when the block assembly is formed by combining the base block 10, the intermediate block 30, and the upper block 50, the formwork 80 is installed.

As shown in FIG. 5, the formwork 80 is installed in an arch shape in an inner direction of the block assembly so as to be spaced apart from the block assembly. The formwork can be fixed to the first support plate 27 and the second support plate 43, the third support plate 47, and the fourth support plate 63. Through fixing method, through holes are formed in each support plate to fix each support plate and formwork with bolts. In addition, the formwork can of course be fixed to the first to third rebar exposed portion formed in each block.

As such, in the state where the formwork 80 is installed, the concrete is poured into the empty space between the block assembly and the formwork. Of course, drainage pipes and electrical facilities can be installed in advance before concrete is poured.

When concrete is cured after pouring concrete, the formwork is formed by dismantling the formwork.

After the concrete lining is formed, the tunnel is completed by repeating the above steps after excavating again for a certain distance.

As such, the present invention does not excavate the tunnel all at once, excavates only the space for installing one block assembly, and then assembles three types of blocks to form a block assembly suitable for the excavated space. The risk of buckling is low and has the advantage of shortening the air.

On the other hand, the present invention, in another example, the base block fixing step may further fix the base block 10 by fixing the upper fixing plate 20 with the fixing members 70 and 73 and then installing a brace 93.

Referring to FIG. 6, after the plurality of piles 90 are driven into the ground, the bottom of the brace 93 is coupled to the upper portion of the pile. And the upper portion of the brace 93 is joined to the first rebar exposed portion 17 by welding. The brace 93 can be removed by cutting the exposed portion of the concrete lining after the concrete lining is formed.

In addition, the present invention may further perform a filling step between the second coupling step and the formwork installation step.

Filling is a process of injecting a filler in the gap between the base block 10 and the intermediate block 30, the intermediate block 30 and the upper block 50.

As the filler, mortar, asphalt, or polymer resin can be used. By injecting such a filler into the gap, it is possible to improve the bonding force between the blocks and to prevent corrosion of the bonding plate which is a metal material.

Meanwhile, the present invention shows a block assembly formed by combining the base block 10, the intermediate block 30, and the upper block 50 applied to FIGS. 7 to 9 in FIG. 10. The illustrated block assembly shows a structure in which each coupling block and a coupling groove are not formed in each block. In this case, each block is firmly coupled by the fixing means and the first and second coupling means.

As described above, the present invention has been described with reference to one embodiment, which is merely exemplary, and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

10: base block 20: fixed plate
25: first coupling plate 30: intermediate block
40: second bonding plate 45: third bonding plate
50: upper block 60: fourth coupling plate
80: formwork

Claims (5)

A base block seated on both left and right sides of the excavation passage and fixed to the ground;
A plurality of first reinforcing bar exposed portions formed by exposing reinforcing bars embedded in the base block to the outside;
An intermediate block coupled to an upper portion of the base block;
A plurality of second rebar exposure parts formed by exposing the reinforcing bars embedded in the intermediate block to the outside;
An upper block coupled to an upper portion of the intermediate block;
A plurality of third rebar exposure parts formed by exposing the reinforcing bars embedded in the upper block to the outside;
First coupling means for coupling the base block and the intermediate block;
And a second coupling means for coupling the intermediate block and the upper block.
The base block has a lower body in contact with the ground, and the upper body is formed to be bent in the upper portion of the lower body is coupled to the lower portion of the intermediate block,
The lower body is formed to extend in the outward direction of the upper body,
The first coupling means may include a first coupling plate coupled to an upper portion of the base block, a first support plate formed by bending downwardly from an end of the first coupling plate, and coupled to a lower portion of the intermediate block to the first coupling plate. A plate and a nested second bonding plate, and a second support plate formed by bending upwardly at an end of the second bonding plate,
The second coupling means includes a third coupling plate coupled to an upper portion of the intermediate block, a third support plate formed by bending downwardly from an end of the third coupling plate, and coupled to a lower portion of the upper block. The plate and the nested fourth block, and the modular block assembly for tunnel construction, characterized in that it comprises a fourth support plate bent upward from the end of the fourth coupling plate. delete A base block seating step of seating base blocks on both left and right sides of the excavation passage after forming an excavation passage at a predetermined distance;
A base block fixing step of fixing the base block to the ground;
An intermediate block seating step of seating an intermediate block on an upper portion of the base block;
A first coupling step of coupling the intermediate block and the base block by a first coupling means;
An upper block seating step of seating an upper block on an upper portion of the intermediate block to form an arch block assembly;
A second coupling step of coupling the intermediate block and the upper block with a second coupling means;
A formwork installation step of installing an arch formwork in an inward direction of the block assembly to be spaced apart from the block assembly;
And placing concrete between the block assembly and the formwork;
The base block has a lower body in contact with the ground, and the upper body is formed to be bent in the upper portion of the lower body is coupled to the lower portion of the intermediate block,
The lower body is formed to extend in the outward direction of the upper body,
The first coupling means may include a first coupling plate coupled to an upper portion of the base block, a first support plate formed by bending downwardly from an end of the first coupling plate, and coupled to a lower portion of the intermediate block to the first coupling plate. A plate and a nested second bonding plate, and a second support plate formed by bending upwardly at an end of the second bonding plate,
The second coupling means includes a third coupling plate coupled to an upper portion of the intermediate block, a third support plate formed by bending downwardly from an end of the third coupling plate, and coupled to a lower portion of the upper block. And a fourth coupling plate and a fourth supporting plate formed by bending upwardly from an end of the fourth coupling plate. According to claim 3, The base block fixing step Tunnel construction method characterized in that the fixing plate coupled to the bottom surface of the base block is fixed to the ground by a fixing member. The method of claim 4, wherein the base block fixing step is to further secure the base block by installing a brace after fixing the fixing plate with the fixing member,
And a lower portion of the brace is coupled to a pile embedded in the ground, and the upper portion of the brace is coupled to a first rebar exposed portion formed by exposing reinforcing bars embedded in the base block to the outside.

Images