KR102292821B1 - Floatable concrete block structure and manufacturing method therefor - Google Patents

Abstract

The present invention relates to a floatable concrete block structure which can save manufacturing costs, and a manufacturing method thereof. The floatable concrete block structure comprises: a first concrete block forming a floor surface for a buoyancy chamber; a second concrete block forming an opening for the buoyancy chamber; a first watertight packing positioned between the first and second concrete blocks; and a concrete column coupling the first and second concrete blocks to each other.

Description

Floatable concrete block structure and manufacturing method therefor

The present invention relates to a concrete block structure manufactured and floated in water and a method of manufacturing the same, and more particularly, to a concrete structure floating in the sea or a concrete structure submerged in water after floating.

In a situation where interest in natural resources is increasing, wind power generation for generating electricity using wind is recognized as an alternative energy source. Wind power generation is a method of generating electric power using a wind turbine, and it is preferable to install it in a place where the flow of air is not blocked.

Conventional wind turbines installed on land are often installed in mountains or highlands where airflow can be secured as much as possible, but there is a limit in effectively producing energy due to obstacles such as hills, forests, and buildings.

Accordingly, in recent years, attempts have been made to install a wind turbine in the sea where there are no obstacles mentioned above. There were limits.

On the other hand, since most offshore wind resources are generated at a depth of 50 m or more, there is a limit to securing satisfactory energy by installing wind power generation structures only on the coast.

Therefore, in recent years, active attempts have been made to install wind power structures in the deep sea of 50 m or more. A platform for offshore wind power is being installed.

However, in the case of using steel, there is a problem in that the price is high, corrosion is further promoted by seawater containing salt, and there is a problem in that it is vulnerable to hoop stress by the pressure of seawater.

On the other hand, as a prior art document related to a semi-submersible platform for offshore wind power generation, Japanese Patent No. 5022797 (applied on July 11, 2007, registered on June 22, 2012) has been proposed.

In the prior art document, in order to overcome the problem of durability of steel, a floating body made of concrete was formed.

In addition to the above purposes, marine concrete structures have been manufactured and used for various purposes.

The offshore concrete structure may be a concrete structure that floats on the water surface, such as a platform for wind power generation, or a concrete structure that is submerged in water for the purpose of a breakwater or an anchor.

In general, in the case of a large concrete structure, it is common to be manufactured in a caisson structure.

When such a large concrete structure is manufactured on land, it is very difficult to move the concrete structure manufactured on land to the sea due to its weight.

As a technique for solving this problem, a method of manufacturing a large concrete structure capable of floating on a large barge has been recently used. Even in this case, there is a problem in that it is not only inconvenient to manufacture a concrete structure on a barge, but also requires the use of an expensive large barge for a very long time.

Japanese Patent No. 5022797 (Registered on June 22, 2012) Republic of Korea Patent Registration No. 10-1355805 "Underwater Concrete Block Structure Construction Method and Underwater Concrete Block Structure" (Registered on January 15, 2014) Republic of Korea Patent Registration No. 10-2022339 "Construction Method of Underwater Concrete Block Structure" (Registered on September 10, 2019)

The present invention has been devised to solve the problems of the prior art as described above, and it is not necessary to use a large barge for a long time, and forms a concrete block structure in a way that can be transported on land due to the block shape assembled with each other, especially in the water An object of the present invention is to provide a concrete block structure that is manufactured and floated and a method for manufacturing the same.

In order to solve the above problems, the present invention provides a first concrete block body having a bottom surface for the buoyancy chamber formed on the upper surface and a first watertight arrangement disposed in a form that surrounds the floor surface for the buoyancy chamber on the upper surface of the first concrete block body A first concrete block manufacturing step of manufacturing a first concrete block comprising a packing for; a second concrete block manufacturing step of manufacturing a second concrete block including a second concrete block body having an opening for a buoyancy chamber extending in the vertical direction and a second concrete block body having a plurality of through-holes for a second column extending in the vertical direction; A first concrete block installation step of submerging the first concrete block in water after the first concrete block manufacturing step; After the second concrete block manufacturing step and the first concrete block installation step, the second concrete block is installed on top of the first concrete block to form a concrete block assembly, and an opening for the buoyancy chamber of the second concrete block and A buoyancy chamber with a closed lower end is formed in the concrete block assembly by the bottom surface for the buoyancy chamber of the first concrete block, and the first watertight packing is located between the first concrete block and the second concrete block from the outside. a second concrete block installation step to block the inflow of water into the buoyancy chamber; After the second concrete block installation step, a concrete column for coupling the first concrete block and the second concrete block to each other is formed along the through hole for the second column, and the first concrete block and the first concrete block are formed by the concrete column. Concrete pillar forming step of forming a concrete block structure in which the second concrete blocks are bonded to each other; After the concrete pillar forming step, the buoyancy chamber drainage step of draining the water in the buoyancy chamber to float the concrete block structure to the water surface by the buoyancy of the buoyancy chamber; It is characterized in that it includes.

In the above: the first concrete block includes a plurality of reinforcing bar assemblies for columns extending vertically upward from the lower end connected to the interior of the first concrete block body and projecting to the upper portion of the first concrete block body; In the second concrete block installation step, the second concrete block is installed on top of the first concrete block so that the reinforcing bar assembly for the column of the first concrete block is inserted into the through hole for the second column of the second concrete block and a through-hole for a concrete column whose lower end is blocked in the concrete block assembly is formed by the second through-hole for the second column of the second concrete block and the first concrete block; After the second concrete block installation step, a column drainage step of removing the water inside the through-hole for the concrete column is added; In the concrete pillar forming step, after the pillar draining step, concrete is poured into the through-hole for the concrete pillar to form the concrete pillar in which the reinforcing bar assembly for the pillar and the poured concrete are integrated in the through-hole for the concrete pillar. It is preferable to do

In the above, the first watertight packing of the first concrete block is located outside the first inner watertight packing and the first inner watertight packing surrounding the bottom surface for the buoyancy chamber, the first inner watertight packing It is preferable to include a first outer watertight packing surrounding the packing, wherein the plurality of reinforcing bar assemblies for columns are positioned between the first inner watertight packing and the first outer watertight packing.

In the above: A third concrete block comprising a third concrete block body in which a plurality of through-holes for the third pillar extending in the vertical direction are formed and a ceiling surface for the buoyancy chamber covering the upper portion of the buoyancy chamber is formed on the lower surface of the third concrete block A third concrete block manufacturing step is added; After the second concrete block installation step and the third concrete block manufacturing step, a third concrete block installation step of installing the third concrete block on top of the second concrete block is added; In the step of forming the concrete column, the concrete column is formed along the through hole for the second column and the through hole for the third column, and the first concrete block, the second concrete block, and the third concrete column are formed by the concrete column. Concrete blocks may form the concrete block structure bonded to each other.

In the above: After the step of forming the concrete column, the step of forming the concrete on top of the second concrete block to cover the upper part of the buoyancy chamber may be added.

In the above: the second concrete block, a second watertight packing is provided on the upper surface of the second concrete block body to surround the opening for the buoyancy chamber; In the second concrete block installation step, a plurality of second concrete blocks are installed on top of the first concrete block in multiple stages, and the second watertight packing is located between the second concrete blocks installed adjacent to each other vertically It is possible to block the inflow of water into the buoyancy chamber from the outside.

In another aspect of the present invention, in a floating concrete structure: a first concrete block including a first concrete block body having a bottom surface for buoyancy room formed on the upper surface, and a bottom surface together with a floor surface for buoyancy room of the first concrete block In order to form this clogged buoyancy chamber, it includes a second concrete block body formed with an opening for a buoyancy chamber extending in the vertical direction and a plurality of second through-holes for a second column extending in the vertical direction, and is installed on the top of the first concrete block Concrete block assembly comprising a second concrete block and a first watertight packing positioned between the first concrete block and the second concrete block to block the inflow of water into the buoyancy chamber from the outside; a concrete column formed along the through hole for the second column to couple the first concrete block and the second concrete block to each other; It is characterized in that it includes.

In the above, the first concrete block includes a plurality of reinforcing bar assemblies for pillars extending vertically upward from the lower end connected to the inside of the first concrete block body and projecting to the upper portion of the first concrete block body, the The reinforcing bar assembly for the column is inserted into the through hole for the second column of the second concrete block, and the lower end is blocked by the through hole for the second column of the second concrete block and the first concrete block in the concrete block assembly. It is preferable that the through-hole is formed, and the concrete pillar is formed by integrating the concrete poured into the through-hole for the concrete pillar and the reinforcing bar assembly for the pillar.

In the above, the first watertight packing of the first concrete block is located outside the first inner watertight packing and the first inner watertight packing surrounding the bottom surface for the buoyancy chamber, the first inner watertight packing It is preferable to include a first outer watertight packing surrounding the packing, wherein the plurality of reinforcing bar assemblies for columns are positioned between the first inner watertight packing and the first outer watertight packing.

In the above, the concrete block assembly includes a third concrete block body in which a plurality of through-holes for third pillars extending in the vertical direction are formed and a ceiling surface for the buoyancy chamber covering the upper portion of the buoyancy chamber is formed on a lower surface thereof, and a third concrete block installed on an upper portion of the second concrete block, wherein the concrete column penetrates for the second column to connect the first concrete block, the second concrete block, and the third concrete block to each other It may be formed along the sphere and the through hole for the third pillar.

In the above, to cover the upper portion of the buoyancy chamber may further include a standing concrete formed on the upper portion of the second concrete block.

In the above, in the concrete block assembly, the second concrete block is installed in multiple stages on top of the first concrete block, and is located between the second concrete blocks installed adjacent to each other in the top and bottom, so that the water from the outside to the buoyancy chamber It may include a second watertight packing to block the inflow.

In the above, the first concrete block body is formed with a through hole for a first column extending in the vertical direction, the concrete column is the first column for coupling the first concrete block and the second concrete block to each other It may be formed along the through-hole for the second pillar and the through-hole for the second pillar.

In the above, a third concrete block or slab concrete covering the upper portion of the buoyancy chamber is provided on the upper portion of the second concrete block, and the water in the buoyancy chamber is discharged to the outside or the A buoyancy control device for introducing water into the buoyancy chamber may be provided.

In the above, the filling material may be filled in the buoyancy chamber.

As described above, in the present invention, it is not necessary to use a large barge for a long period of time, and since land transport is possible due to the block shape assembled with each other, the manufacturing cost of the marine concrete structure is greatly reduced compared to the conventional method.

In addition, since most of the production work is done in water, it is unnecessary to work at heights required for the onshore production of large concrete blocks, and thus very safe work is possible.

1 is a cross-sectional view of a first concrete block used in a floating concrete block structure according to a first embodiment of the present invention;
Figure 2 is a perspective view of Figure 1;
3 is a cross-sectional view of a second concrete block used in the floating concrete block structure according to the first embodiment of the present invention;
Figure 4 is a perspective view of Figure 3;
5 is a cross-sectional view of a third concrete block used in the floating concrete block structure according to the first embodiment of the present invention;
Figure 6 is a perspective view of Figure 5;
7 to 12 are views sequentially showing a method of manufacturing a floating concrete block structure according to a first embodiment of the present invention;
13 is a view showing the form of use of the concrete block structure according to the first embodiment of the present invention;
14 is a view showing another use form of the concrete block structure according to the first embodiment of the present invention;
15 is a view showing a modified form of FIG. 12;
16 is a view showing a case in which the concrete block structure of FIG. 14 and the concrete block structure of FIG. 15 are applied;
17 is a view showing another modified form of FIG. 12;
18 is a view showing another modified form of FIG. 17;
19 is a cross-sectional view of a first concrete block used in a floating concrete block structure according to a second embodiment of the present invention;
20 is a perspective view of FIG. 19;
21 is a cross-sectional view of a state in which the extension reinforcing bar assembly is coupled to the first concrete block after FIG. 19;
22 is a cross-sectional view of a state in which the guide pawl is detachably coupled to the first concrete block after FIG. 21;
23 is a cross-sectional view of the guide pawl of FIG. 22;
24 is a cross-sectional view taken along line AA of FIG. 23;
25 is a cross-sectional view of a second concrete block used in a floating concrete block structure according to a second embodiment of the present invention;
Figure 26 is a perspective view of Figure 25;
27 to 34 are views sequentially illustrating a method of manufacturing a floating concrete block structure according to a second embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are given to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

First, a method of manufacturing a floating concrete block structure according to a first embodiment of the present invention will be described.

1 is a cross-sectional view of a first concrete block used for a floating concrete block structure according to a first embodiment of the present invention, FIG. 2 is a perspective view of FIG. 1, and FIG. 3 is a floating concrete block according to a first embodiment of the present invention. A cross-sectional view of a second concrete block used for a possible concrete block structure, FIG. 4 is a perspective view of FIG. 3, and FIG. 5 is a cross-sectional view of a third concrete block used for a floating concrete block structure according to the first embodiment of the present invention 6 is a perspective view of FIG. 5, and FIGS. 7 to 12 are views sequentially illustrating a method of manufacturing a floating concrete block structure according to the first embodiment of the present invention.

(1) First concrete block manufacturing step

In this embodiment, the first concrete block 110 as shown in FIGS. 1 and 2 is manufactured.

The first concrete block 110 includes a first concrete block body 111 having a rectangular parallelepiped shape.

A bottom surface 111a for the buoyancy chamber is concavely formed in the center of the upper surface of the first concrete block body 111, and a plurality of through holes 111b for the first pillar are formed along the edge of the bottom surface 111a for the buoyancy chamber. has been

In this embodiment, one bottom surface (111a) for the buoyancy chamber is formed and has a rectangular shape in plan view.

However, according to the embodiment, a plurality of bottom surfaces 111a for the buoyancy chamber may be formed, and various modifications are possible in a planar shape.

In this embodiment, the through hole 111b for the first pillar is formed in a truncated cone shape.

A first packing groove 111c is formed on the upper surface of the first concrete block body 111, and a first watertight packing 112 is provided in the first packing groove 111c.

The first packing groove 111c and the first watertight packing 112 are formed in a square ring shape surrounding the bottom surface 111a for the buoyancy chamber.

The manufacturing of the first concrete block 110 may be made on land, or may be made on a large barge.

(2) Second concrete block manufacturing step

In this embodiment, the second concrete block 120 as shown in FIGS. 3 and 4 is manufactured.

The second concrete block 120 includes a second concrete block body 121 in the form of a rectangular parallelepiped.

The second concrete block body 121 has an opening 121a for the buoyancy chamber, and a plurality of through-holes 121b for the second column along the edge of the opening 121a for the buoyancy chamber are formed.

The opening (121a) for the buoyancy chamber is in the form of extending in the vertical direction, and the second through-hole (121b) for the pillar is also in the form of extending in the vertical direction.

In the present embodiment, the opening 121a for the buoyancy chamber has a rectangular parallelepiped shape, and the through hole 121b for the second column has a cylindrical shape, but the shape may be variously changed.

A second packing groove 121c is formed on the upper surface of the second concrete block body 121, and a second watertight packing 122 is provided in the second packing groove 121c.

The second packing groove 121c and the second watertight packing 122 are formed in a square ring shape surrounding the opening 121a for the buoyancy chamber.

(3) 3rd concrete block manufacturing step

In this embodiment, the third concrete block 130 as shown in FIGS. 5 and 6 is manufactured.

The third concrete block 130 includes a third concrete block body 131 in the form of a rectangular parallelepiped.

A ceiling surface 131a for the buoyancy chamber is formed in the central portion of the lower surface of the third concrete block body 131, and a plurality of through holes 131b for the third pillar are formed along the edge of the ceiling surface 131a for the buoyancy chamber. .

In this embodiment, the through hole 131b for the third pillar is formed in the shape of an inverted truncated cone.

In addition, a working hole (131c) is formed in the third concrete block body (131) to communicate with the ceiling surface (131a) for the buoyancy chamber.

According to an embodiment, a door that can be opened and closed may be mounted in the working hole 131c.

(4) First concrete block installation step

After the first concrete block manufacturing step, the first concrete block 110 is submerged in water as shown in FIG. 7 .

(5) Second concrete block installation step

After the second concrete block manufacturing step and the first concrete block installation step, the second concrete block 120 is installed on the upper part of the first concrete block 110 as shown in FIG. 8 to form the concrete block assembly 100A.

In this embodiment, the second concrete block 120 is installed at one end on the upper part of the first concrete block 110, but according to the embodiment, a plurality of second concrete blocks 120 are installed on the upper part of the first concrete block 110. ) can be installed in multiple stages.

In this way, the buoyancy chamber 140 with the lower end blocked is formed in the concrete block assembly 100A formed according to the installation of the second concrete block 120 .

8, the buoyancy chamber 140 is formed by the opening 121a for the buoyancy chamber of the second concrete block 120 and the bottom surface 111a for the buoyancy chamber of the first concrete block 111, the upper end is open have.

The first watertight packing 112 in the concrete block assembly 100A is located between the first concrete block body 111 and the second concrete block body 121 to block the inflow of water into the buoyancy chamber 140 from the outside. do.

That is, in the concrete block assembly 100A, water is present in the buoyancy chamber 140 in the state of FIG. 8 , but water cannot flow into the buoyancy chamber 140 by the first watertight packing 114 . .

(6) 3rd concrete block installation step

After the third concrete block production step and the second concrete block installation step, the third concrete block 130 is installed on the second concrete block 120 as shown in FIG. 9, and the form of the concrete block assembly 100A is completed. do.

In the concrete block assembly 100A, the second watertight packing 122 is located between the second concrete block body 121 and the third concrete block body 131 to block the inflow of water into the buoyancy chamber 140 from the outside. do.

The third concrete block 130 covers the upper portion of the buoyancy chamber 140 .

In the completed concrete block assembly 100A, the buoyancy chamber 140 has an opening 121a for the buoyancy chamber of the second concrete block 120 and the floor surface 111a for the buoyancy chamber of the first concrete block 110 and the third concrete By the ceiling surface (131a) for the buoyancy chamber of the block 130, both the top and bottom are closed.

In addition, the first through-hole (111b) for the first column of the concrete block 110 and the second through-hole (121b) for the second column of the second concrete block (120) and the third through-hole for the third column of the concrete block (130) The spheres 131b communicate with each other to form the through-port 150 for a concrete column.

(7) Concrete column formation stage

After the third concrete block installation step, the concrete column 160 is formed in the through-hole 150 for the concrete column.

That is, the first through-hole 111b for the first column of the concrete block 110 and the second through-hole 121b for the second column of the second concrete block 120 and the third through-hole for the third column of the concrete block 130 A concrete pillar 160 is formed along the sphere 131b, and the first concrete block 110, the second concrete block 120, and the third concrete block 130 are combined with each other by the concrete pillar 160. A block structure 100B is formed.

In this embodiment, the concrete pillar 160 is formed by inserting the concrete pillar forming part into the through-hole 150 for the concrete pillar.

The concrete column forming part includes a waterproof membrane 162 and waterproof membrane 162 that surround the lower and side portions of the reinforcing bar assembly 161 for the pillar and the reinforcing bar assembly 161 for the pillar extending in the vertical direction, and the waterproof membrane 162 is not cured. Contain concrete (163, referred to as "fresh concrete").

When such a concrete column forming part is inserted into the through part 150 for a concrete column, the waterproofing film 162 is applied to the first, second, and third concrete blocks 110 , 120 , 130 by the pressure of the unhardened concrete 163 . The unhardened concrete 163 is cured while in close contact, and the concrete column 160 extending in the vertical direction is formed on the concrete block assembly 100A.

Since such a process is described in more detail in Korean Patent Registration No. 10-2022339 "Underwater Concrete Block Structure Construction Method" (registered on September 10, 2019), the detailed description will be omitted.

As shown in FIG. 10 , the through hole 111b for the first column has a truncated cone shape, and the through hole 131b for the third column has an inverted truncated cone shape, so the concrete column 160 is formed with the first concrete block 110 and The second concrete block 120 and the third concrete block 130 have a structure that prevents separation from each other.

In the present embodiment, the through hole 111b for the first column is formed in the first concrete block 110, but this is only one embodiment.

If the first concrete block 110 does not form the through-hole 111b for the first column, rather, the binding protrusion protruding into the second column-use through-hole 121b is formed in the first concrete block 110 . And, the second concrete block 120 for the second column through-hole (121b) and the third concrete block 130 for the third column through-hole (131b) to form the concrete column 160, the concrete column ( If 160 is combined with the bundling protrusion of the first concrete block 110, the first concrete block 110, the second concrete block 120, and the third concrete block 130 are coupled to each other by the concrete pillar 160 likewise. It is possible to form a concrete block structure (100B).

At this stage, water is still present inside the buoyancy chamber 150 .

(8) buoyancy chamber drainage step

After the concrete column forming step, as shown in FIG. 11 , a buoyancy chamber draining step of removing water inside the buoyancy chamber 140 is performed.

A drainage device 170 including a drainage pump 171 and a drainage hose 172 is provided in the concrete block structure 100B, and the water inside the buoyancy chamber 140 is drained by the operation of the drainage pump 171 . It is discharged to the outside through 170.

On the other hand, since water cannot be introduced into the buoyancy chamber 140 from the outside by the first watertight packing 112 and the second watertight packing 122, by this step, the buoyancy chamber 140 has no water. become a state

When the water inside the buoyancy chamber 140 is drained in this way, the concrete block structure 100B floats to the surface by the buoyancy force of the buoyancy chamber 140 as shown in FIG. 12 .

Thereby, the present concrete block structure 100B is completed.

In this embodiment, the description is based on that the drainage device 170 is temporarily installed, but depending on the embodiment, the drainage device 170 may be permanently installed in the concrete block structure 100B.

13 shows the form of use of the present concrete block structure 100B, and shows that an offshore wind power generator can be installed and used on the top of the concrete block structure 100B.

14 shows another use form of the present concrete block structure 100B.

In this figure, for the use of the present concrete block structure 100B, it further includes a moving step and a structure subsidence step.

- move phase;

First, the concrete block structure 100B is manufactured and floated at a shallow water depth (100B-a), and then the concrete block structure 100B-a levitated on the water surface is transferred to another place (the point to be installed at a deep place) by a ship, etc. ) to (100B-b).

- Structure subsidence phase:

After the moving step, the buoyancy chamber 140 of the concrete block structure 100B-b is filled with a filling material 141 such as sand, gravel or sandstone to sink the concrete block structure 100B-b into the water.

When the filling material 141 is filled in the buoyancy chamber 140, the concrete block structure 100B-b loses buoyancy and sinks in water.

In this way, the concrete block structure submerged in water (100B-c) may be used as an underwater concrete block structure.

FIG. 15 shows a modified form of FIG. 12 .

This figure shows that two buoyancy chambers 140 can be formed. That is, the number of the buoyancy chamber 140 can be variously changed according to the embodiment.

Also, in this figure, the working hole 131c is not formed in the third concrete block 130 by blocking the working hole 131c after the draining step.

16 is an example of applying the concrete block structure 100B-14 of FIG. 14 and the concrete block structure 100B-15 of FIG.

In particular, after the concrete block structure 100B-15 is floated on the water surface as shown in FIG. 15, it is moved to another place (the point to be installed, where the water depth is deep) by a ship or the like, and is formed by the concrete block structure 100B-14 was made to stand still.

In particular, FIG. 16 shows that the posture of the concrete block structure 100B-15 can be rotated by 90 degrees to be moored by the concrete block structure 100B-14.

In addition, an offshore wind power generator is installed on the concrete block structure 100B-15.

FIG. 17 shows another modified form of FIG. 12 .

In this modified example, the second concrete block 120 is installed in multiple stages.

Here, the second watertight packing 122 is positioned between the second concrete blocks 120 installed adjacent to each other up and down to block the inflow of water into the buoyancy chamber 140 from the outside.

18 shows a modified form of FIG. 17 .

In this modified example, it is shown that the concrete block structure 100B can be formed by the first concrete block 110 and the second concrete block 120 without the third concrete block 130 .

At this time, the buoyancy chamber 140 has an open top.

Also, the through hole 121b for the second column of the second concrete block 120 located at the uppermost portion has an inverted truncated cone shape.

Next, a method of manufacturing a floating concrete block structure according to a second embodiment of the present invention will be described.

19 is a cross-sectional view of a first concrete block used in a floating concrete block structure according to a second embodiment of the present invention, FIG. 20 is a perspective view of FIG. 19, and FIG. 21 is an extension reinforcement in the first concrete block after FIG. 22 is a cross-sectional view of a state in which the assembly is coupled, FIG. 22 is a cross-sectional view of a state in which the guide pawl is detachably coupled to the first concrete block after FIG. 21, FIG. 23 is a cross-sectional view of the guide pawl of FIG. AA standard cross-sectional view, Figure 25 is a cross-sectional view of the second concrete block used in the floating concrete block structure according to the second embodiment of the present invention, Figure 26 is a perspective view of Figure 25, Figures 27 to 34 are this view The drawings are sequentially showing a method of manufacturing a floating concrete block structure according to a second embodiment of the present invention.

(1) First concrete block manufacturing step

In this embodiment, the first concrete block manufacturing step proceeds in the order of FIGS. 19 and 21 .

First, the first concrete block 110 as shown in FIGS. 19 and 20 is manufactured.

The first concrete block 110 includes a first concrete block body 111 having a rectangular parallelepiped shape as shown in FIG. 20 .

A bottom surface (111a) for the buoyancy chamber is formed in the center of the upper surface of the first concrete block body (111).

In addition, the first concrete block body 111 is provided with a plurality of preliminary reinforcing bar assemblies 113-1 and a plurality of block-side couplers 114 along the edge of the bottom surface 111a for the buoyancy chamber.

In this embodiment, 14 preliminary reinforcing bar assemblies 113-1 are provided, and a block-side coupler 114 is provided for each preliminary reinforcing bar assembly 113-1.

The preliminary reinforcing bar assembly 113-1 has its lower end connected to the inside of the first concrete block body 111 (specifically, the inner reinforcing bar of the first concrete block body 111), and extends upward in the vertical direction from the lower end. It protrudes to the upper part of the first concrete block body 111 .

The extension reinforcing bar assembly 113-2 is connected to the preliminary reinforcing bar assembly 113-1 as shown in FIG. 21 , and the preliminary reinforcing bar assembly 113-1 and the extended reinforcing bar assembly 113-2 are together the reinforcing bar assembly 113 for a column. ) is achieved.

The block-side coupler 114 is provided in a form surrounding the preliminary reinforcing bar assembly 113-1.

In this embodiment, the block-side coupler 114 is in the form of a pipe, and a preliminary reinforcing bar assembly 113-1 is disposed therein, and a male thread 114a is formed on the outer circumferential surface.

Two first packing grooves 111c are formed on the upper surface of the first concrete block body 111, and a first watertight packing 112 is provided for each of the first packing grooves 111c.

The first packing groove 111c and the first watertight packing 112 are formed in a square ring shape surrounding the bottom surface 111a for the buoyancy chamber.

On the other hand, the first watertight packing 112 is located on the outside of the first inner watertight packing 112-1 and the first inner watertight packing 112-1 surrounding the bottom surface 111a for the buoyancy chamber. It may be divided into a first outer watertight packing 112-2 surrounding the first inner watertight packing 112-2.

A plurality of preliminary reinforcing bar assemblies 113-1 are positioned between the first inner watertight packing 112-1 and the first outer watertight packing 112-2.

After manufacturing the first concrete block 110 as shown in FIG. 19 , as shown in FIG. 21 , the extension reinforcement assembly 113-2 is connected to the preliminary reinforcement assembly 113-1 to manufacture the first concrete block 110 . complete

Accordingly, the first concrete block 110 includes a first concrete block body 111 , a first watertight packing 112 , a reinforcing bar assembly 113 for a column, and a block-side coupler 114 .

(2) Guide pole installation step

After the first concrete block manufacturing step, the guide pole 180 is detachably coupled to the block-side coupler 114 of the first concrete block 110 as shown in FIG. 22 .

As shown in FIGS. 23 and 24 , the guide pole 180 is a guide pipe 181 , an upper insertion guide 182 , a pipe side coupler 183 , and a third watertight packing 184 . And, it is made to include a drain pipe (18).

The guide pipe 181 is in the form of a pipe extending in the vertical direction, a hollow extending in the vertical direction is formed along the inside thereof, and the upper and lower portions are opened, respectively.

Accordingly, the reinforcing bar assembly 113 for a column may be inserted along the inside of the guide pipe 181 .

A drain hole 181a is formed at the lower end of the guide pipe 181 .

The upper insertion guide 182 has a shape tapered upward to the upper end of the guide pipe 181 .

The upper insertion guide 182 is for guiding the installation of the second concrete block 120 to be described later.

The pipe-side coupler 183 is provided on the inner peripheral surface of the lower end of the guide pipe 181 to be detachably coupled to the block-side coupler 114 of the first concrete block 110 .

To this end, the pipe-side coupler 183 is formed with a female thread 183a for screwing to the male thread 114a of the block-side coupler 114 .

In this embodiment, the pipe-side coupler 183 and the block-side coupler 114 are exemplified by screw coupling in order to be detachably coupled, but the detachable coupling structure can be applied in a very diverse way.

The third watertight packing 184 is provided at the lower end of the guide pipe 181 , and when the guide pole 180 is coupled to the block-side coupler 114 , that is, the pipe-side coupler 183 is the block-side coupler 114 . When screwed to the, it is to block the inflow of water into the guide pipe 181 from the outside.

When the pipe-side coupler 183 of the guide pole 180 is screwed to the block-side coupler 114 , the third watertight packing 184 is in close contact with the first concrete block 110 to introduce water into the guide pipe 181 inside. This can be prevented from entering.

The drain pipe 185 is a pipe extending in the vertical direction inside the guide pole 180, and the lower end of the drain pipe 185 communicates with the outside through a drain hole 181a formed at the lower end of the guide pipe 181, and the drain pipe The upper end of the 185 extends to the upper end of the guide pole 180 .

In this embodiment, the drain pipe 185 is in close contact with the inner circumferential surface of the guide pipe 181 and extends in the vertical direction.

When the guide pole 180 is coupled to the block-side coupler 114 as shown in FIG. 3 , the first concrete block 110 can be installed in water.

In some cases, the guide pole 180 may be simply manufactured to be mounted on the top of the first concrete block 110, and in this case, the guide pole installation step may be performed after the first concrete block installation step.

(3) Second concrete block manufacturing step

In this embodiment, the second concrete block 120 as shown in FIGS. 25 and 26 is manufactured.

The second concrete block 120 includes a second concrete block body 121 in the form of a rectangular parallelepiped.

The second concrete block body 121 has an opening 121a for the buoyancy chamber, and a plurality of through-holes 121b for the second column along the edge of the opening 121a for the buoyancy chamber are formed.

The opening (121a) for the buoyancy chamber is in the form of extending in the vertical direction, and the second through-hole (121b) for the pillar is also in the form of extending in the vertical direction.

Two second packing grooves 121c are formed on the upper surface of the second concrete block body 121, and a second watertight packing 122 is provided for each second packing groove 121c.

The second packing groove 121c and the second watertight packing 122 are formed in a square ring shape surrounding the opening 121a for the buoyancy chamber.

The second watertight packing 122 is located on the outside of the second inner watertight packing 122-1 surrounding the opening 121a for the buoyancy chamber, and the second inner watertight packing 122-1. 2 It may be divided into a second outer watertight packing 122-2 surrounding the inner watertight packing 122-2.

The plurality of second through-holes 121b for the pillars are positioned between the second inner watertight packing 122-1 and the second outer watertight packing 122-2.

The through hole 121b for the second pillar has a larger diameter than the diameter of the guide pipe 181 .

(4) First concrete block installation step

After the first concrete block manufacturing step and the guide pole installation step, the first concrete block 110 is submerged in water as shown in FIG. 27 .

That is, after the guide pole 180 is installed on the first concrete block 110 as shown in FIG. 22 , the first concrete block 110 is installed in water as shown in FIG. 27 .

As shown in FIG. 27 , the third watertight packing 184 is in close contact with the first concrete block 110 to prevent water from flowing into the guide pole 180 .

In addition, the upper end of the guide pole 180 is protruding from the water surface.

Therefore, in the present embodiment, the reinforcing bar assembly 113 for a column does not come into contact with seawater by the guide pole 180 . Therefore, there is no risk of corrosion due to the contact of the reinforcing bar assembly 113 with seawater.

(5) Second concrete block installation step

After the second concrete block manufacturing step and the first concrete block installation step, the second concrete block 120 is installed on the first concrete block 110 as shown in FIG. 28 to form the concrete block assembly 100A.

The second concrete block 120 so that the reinforcing bar assembly 113 for the column of the first concrete block 110 installed in water as shown in FIG. 28 is inserted into the through hole 121b for the second column of the second concrete block 120 . to install

In this way, the buoyancy chamber 140 with the lower end blocked is formed in the concrete block assembly 100A formed according to the installation of the second concrete block 120 .

The buoyancy chamber 140 is formed by the opening 121a for the buoyancy chamber of the second concrete block 120 and the bottom surface 111a for the buoyancy chamber of the first concrete block 111, and the upper end is open.

The first watertight packing 112 in the concrete block assembly 100A is positioned between the first concrete block body 111 and the second concrete block body 121 to block the inflow of water into the buoyancy chamber 140 from the outside, , The second watertight packing 122 is positioned between the second concrete block bodies 121 arranged vertically adjacent to each other to block the inflow of water into the buoyancy chamber 140 from the outside.

That is, in the concrete block assembly 100A, water exists in the buoyancy chamber 140 , but water can be introduced into the buoyancy chamber 140 by the first watertight packing 114 and the second watertight packing 124 . becomes non-existent.

An installation process of the second concrete block 120 will be described in more detail.

The second concrete block 120 is lowered from the top to the bottom so that the guide pole 180 installed on the first concrete block 110 is inserted into the through hole 121b for the second column of the second concrete block 120 . make it

At this time, the upper insertion guide 182 of the guide pole 180 is easily inserted into the through hole 121b for the second column of the second concrete block 120, and the seating position of the second concrete block 120 is fixed. guide

Since such a process is described in more detail in Korean Patent Registration No. 10-2022339 "Underwater Concrete Block Structure Construction Method" (registered on September 10, 2019), the detailed description will be omitted.

28, a plurality of second concrete blocks 120 are installed on the upper portion of the first concrete block 110 in multiple stages, or in another embodiment, a second concrete block on the upper portion of the first concrete block 110 (120) may be installed as one end.

As described above, in the concrete block assembly 100A formed according to the installation of the second concrete block 120 , the through-hole 150 for the concrete column with the lower end is formed.

The through-hole 150 for the concrete column is formed by the second through-hole 121b for the second column of the concrete block 120 and the first concrete block 110 .

In the concrete block assembly 100A, the first watertight packing 112 is located between the first concrete block body 111 and the second concrete block body 121, and the water inflow into the through-hole 150 for the concrete column from the outside. The second watertight packing 122 is positioned between the second concrete block bodies 121 arranged vertically to block the inflow of water into the through-hole 150 for concrete pillars from the outside.

That is, in the concrete block assembly 100A, water is present in the through part 150 for a concrete pillar, but there is no water inside the guide pole 180 , and water exists only in the outer space of the guide pole 180 , and also By the first watertight packing 112 and the second watertight packing 122 , water cannot be introduced into the through-hole 150 for a concrete column.

(6) Drainage stage for columns

After the second concrete block installation step, as shown in FIG. 29 , a draining step for removing the water inside the through-port 150 for the concrete pillar is performed.

To this end, a drain device 170 including a drain pump 171 and a drain hose 172 is connected to the upper end of the drain pipe 185 , and the through part 150 for a concrete column by operation of the drain pump 151 . The water inside is discharged to the outside through the drain pipe 185 and the drain device 150 .

On the other hand, since water cannot flow into the through-hole 150 for concrete pillars from the outside by the first watertight packing 112 and the second watertight packing 122, by this step, the 150) becomes a state without water.

In this embodiment, only the water of the guide pole 180 external space is drained from the inside of the through-hole 150 for the concrete pillar, and the drainage time is very saved.

Depending on the embodiment, there may be cases where the guide pole 180 is not used. In this case, it is inconvenient to insert a drain hose to the lower part of the through-port 150 for the concrete column, and also for the concrete column. Since the inside of the through-port 150 is filled with water, it takes some time to drain the water.

(8) guide pawl removal step

After the draining step for the pillar, a guide pole removal step of removing the guide pole 180 is performed as shown in FIG. 30 .

The guide pole 180 is rotated so that the pipe-side coupler 183 is released from screw coupling with the block-side coupler 114 , and the guide pole 180 is released upward to remove the guide pole 180 .

(9) Concrete Column Formation Stage

After the guide pole removal step, unhardened concrete 163 is poured into the through-hole 150 for a concrete column as shown in FIG. 163 forms an integrated concrete column 160 .

At this time, there is no water in the through-hole 150 for the concrete pillar, and there is also a risk of the unhardened concrete 163 leaking to the outside by the first watertight packing 112 and the second watertight packing 122 . Therefore, there is no need for a separate waterproofing membrane.

That is, the pouring operation of the unhardened concrete 163 may be performed in the same environment as on land.

On the other hand, the upper end of the reinforcing bar assembly 113 for a column does not form the concrete column 160 , and protrudes above the concrete column 160 .

That is, the reinforcing bar assembly 113 for a column of the first concrete block 110 has a length that can protrude beyond the through-hole 150 for a concrete column to the upper portion of the through-port 150 for a concrete column.

(10) Step of Formation of Upper Concrete

After the concrete column forming step, as shown in FIG. 32 , the concrete block structure 100B is completed by forming the standing concrete 190 on the upper part of the concrete block assembly 100A.

At this time, the upper end of the reinforcing bar assembly 113 for a column protruding to the upper portion of the through-port 150 for a concrete column is connected to the internal reinforcing bar of the standing concrete 190 .

The upper concrete 190 covers the upper part of the buoyancy chamber 140 .

That is, in the concrete block structure 100B, the buoyancy chamber 140 has an opening 121a for the buoyancy chamber of the second concrete block 120 and the floor surface 111a for the buoyancy chamber of the first concrete block 110 and the upper concrete 190 ) to form a closed form.

On the other hand, the working hole 191 for draining the buoyancy chamber 140 and the like are formed in the upper concrete 190 .

(11) buoyancy chamber drainage step

After the concrete column forming step, as shown in FIG. 33 , a buoyancy chamber draining step of removing water inside the buoyancy chamber 140 is performed.

A drainage device 170 including a drainage pump 171 and a drainage hose 172 is provided in the concrete block structure 100B, and the water inside the buoyancy chamber 140 is drained by the operation of the drainage pump 171 . It is discharged to the outside through 170.

On the other hand, since water cannot be introduced into the buoyancy chamber 140 from the outside by the first watertight packing 112 and the second watertight packing 122, by this step, the buoyancy chamber 140 has no water. become a state

As such, when the water inside the buoyancy chamber 140 is drained, the concrete block structure 100B floats to the surface by the buoyancy force of the buoyancy chamber 140 as shown in FIG. 34 .

In the underwater concrete block structure 100B manufactured as described above, the lower end of the reinforcing bar assembly 113 for the column is connected to the first concrete block 110, and the upper end of the reinforcing bar assembly 113 for the column is in the upper concrete 190. It is connected to have a very strong structure.

That is, the concrete pillar 160, the first concrete block 160, and the standing concrete 190 may be integrally formed by the reinforcing bar assembly 113 for the pillar.

On the other hand, according to the embodiment, a buoyancy control device (not shown) may be further provided to adjust the buoyancy of the buoyancy chamber 140 .

The buoyancy control device may control the buoyancy of the buoyancy chamber by discharging the water of the buoyancy chamber 140 to the outside or introducing water into the buoyancy chamber 140 .

When the buoyancy of the buoyancy chamber is adjusted in this way, the concrete block structure can float to the surface like a submarine or sink into the water.

In some cases, the present concrete block structure may be equipped with a tube for assisting buoyancy so as to have more buoyancy.

As described above, the present invention can produce a concrete block structure by not using a large barge or using a large barge for a very short period, so the production cost is very economical.

In addition, land transport of the concrete blocks constituting the concrete block structure is possible, and the installation work is simplified, thereby reducing the overall construction cost.

In addition, since most of the manufacturing work of the concrete block structure is performed in water, it is unnecessary to work at height, so it can work in a relatively safe environment.

The floating concrete block structure according to the present invention can be used for a wide variety of purposes, such as a floating breakwater, a platform for wind/tidal power generation, and a use to replace a general large caisson.

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into 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 illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may be implemented in a combined form.

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

100A: Concrete block aggregate
100B : Concrete block structure
110: first concrete block
111: first concrete block body 111a: floor surface for buoyancy chamber
111b: through hole for the first column 111c: groove for the first packing
112: first watertight packing 112-1: first inner watertight packing
112-2: packing for the first outer watertightness
113: reinforcing bar assembly for columns 113-1: preliminary reinforcing bar assembly
113-2: extension rebar assembly
114: block side coupler 114a: male thread
120: second concrete block
121: second concrete block body 121a: opening for buoyancy chamber
121b: through hole for the second pillar 121c: groove for the second packing
122: second watertight packing 122-1: second inner watertight packing
122-2: second outer watertight packing
130: third concrete block
131: third concrete block body 131a: ceiling surface for buoyancy room
131b: through hole for the third column 131c: working hole
140: buoyancy room 141: filling material
150: through hole for concrete column
160: concrete column 161: reinforcing bar assembly for columns
162: waterproof film 163: unhardened concrete
170: drainage device
171: drain pump 172: drain hose
180: guide pole
181: guide pipe 181a: drain hole
182: upper insertion guide 183: pipe side coupler
183a: female thread 184: third watertight packing
185: drain pipe
190: upper concrete 191: work hole

Claims (15)

A first concrete block comprising a first concrete block body having a bottom surface for the buoyancy chamber on its upper surface and a first watertight packing disposed on the upper surface of the first concrete block body to surround the bottom surface for the buoyancy chamber. a first concrete block manufacturing step;
a second concrete block manufacturing step of manufacturing a second concrete block including a second concrete block body having an opening for a buoyancy chamber extending in the vertical direction and a second concrete block body having a plurality of through-holes for a second column extending in the vertical direction;
a first concrete block installation step of submerging the first concrete block in water after the first concrete block production step;
After the second concrete block manufacturing step and the first concrete block installation step, the second concrete block is installed on top of the first concrete block to form a concrete block assembly, and an opening for the buoyancy chamber of the second concrete block and A buoyancy chamber with a closed lower end is formed in the concrete block assembly by the bottom surface for the buoyancy chamber of the first concrete block, and the first watertight packing is located between the first concrete block and the second concrete block from the outside. a second concrete block installation step to block the inflow of water into the buoyancy chamber;
After the second concrete block installation step, a concrete column for coupling the first concrete block and the second concrete block to each other is formed along the through hole for the second column, and the first concrete block and the first concrete block are formed by the concrete column. Concrete pillar forming step of forming a concrete block structure in which the second concrete blocks are bonded to each other;
After the concrete pillar forming step, the buoyancy chamber drainage step of draining the water in the buoyancy chamber to float the concrete block structure to the water surface by the buoyancy of the buoyancy chamber;
A method of manufacturing a floating concrete block structure comprising a.
The method of claim 1 , wherein:
The first concrete block includes a plurality of reinforcing bar assemblies for columns extending vertically upward from the lower end connected to the interior of the first concrete block body and projecting to the upper portion of the first concrete block body;
In the second concrete block installation step, the second concrete block is installed on top of the first concrete block so that the reinforcing bar assembly for the column of the first concrete block is inserted into the through hole for the second column of the second concrete block and a through-hole for a concrete column whose lower end is blocked in the concrete block assembly is formed by the second through-hole for the second column of the second concrete block and the first concrete block;
After the second concrete block installation step, a column drainage step of removing the water inside the through-hole for the concrete column is added;
The concrete pillar forming step is, after the draining step for the pillar
pouring concrete into the through-hole for the concrete pillar to form the concrete pillar in which the reinforcing bar assembly for the pillar and the poured concrete are integrated in the through-hole for the concrete pillar;
Method of manufacturing a floating concrete block structure, characterized in that.
3. The method of claim 2,
The first watertight packing of the first concrete block is located outside the first inner watertight packing and the first inner watertight packing surrounding the bottom surface for the buoyancy chamber to surround the first inner watertight packing Including the first outer watertight packing,
The plurality of reinforcing bar assemblies for columns are a method of manufacturing a floating concrete block structure, characterized in that it is positioned between the first inner watertight packing and the first outer watertight packing.
The method of claim 1 , wherein:
A third concrete block for manufacturing a third concrete block including a third concrete block body in which a plurality of through holes for a third pillar extending in the vertical direction are formed and a ceiling surface for a buoyancy chamber covering the upper portion of the buoyancy chamber is formed on a lower surface of the third concrete block A block making step is added;
After the second concrete block installation step and the third concrete block manufacturing step, a third concrete block installation step of installing the third concrete block on top of the second concrete block is added;
In the step of forming the concrete column, the concrete column is formed along the through hole for the second column and the through hole for the third column, and the first concrete block, the second concrete block, and the third concrete column are formed by the concrete column. forming the concrete block structure in which the concrete blocks are bonded to each other;
Method of manufacturing a floating concrete block structure, characterized in that.
The method of claim 1 , wherein:
After the step of forming the concrete column, the step of forming the concrete on top of the second concrete block to cover the upper part of the buoyancy chamber is added;
Method of manufacturing a floating concrete block structure, characterized in that.
The method of claim 1 , wherein:
The second concrete block is provided with a second watertight packing disposed in a form surrounding the opening for the buoyancy chamber on the upper surface of the second concrete block body;
In the second concrete block installation step, a plurality of second concrete blocks are installed on top of the first concrete block in multiple stages, and the second watertight packing is located between the second concrete blocks installed adjacent to each other vertically to block the inflow of water into the buoyancy chamber from the outside;
Method of manufacturing a floating concrete block structure, characterized in that.
A first concrete block including a first concrete block body having a bottom surface for the buoyancy chamber formed on the upper surface, and the buoyancy extending in the vertical direction to form a closed buoyancy chamber with the bottom surface for the buoyancy chamber of the first concrete block A second concrete block including a second concrete block body having a utility opening and a plurality of second through-holes extending in the vertical direction and installed on the first concrete block, the first concrete block and the first concrete block Concrete block assembly including a first watertight packing that is located between the two concrete blocks to block the inflow of water into the buoyancy chamber from the outside;
a concrete column formed along the through hole for the second column to couple the first concrete block and the second concrete block to each other;
Floatable concrete block structure comprising a.
8. The method of claim 7,
The first concrete block includes a plurality of reinforcing bar assemblies for columns extending vertically upward from the lower end connected to the inside of the first concrete block body and projecting to the upper portion of the first concrete block body,
The reinforcing bar assembly for the column is inserted into the through hole for the second column of the second concrete block,
A through-hole for a second column of the second concrete block and a through-hole for a concrete column whose lower end is blocked by the first concrete block are formed in the concrete block assembly,
The concrete column is a floating concrete block structure, characterized in that the concrete poured into the through-hole for the concrete column is integrally formed with the reinforcing bar assembly for the column.
9. The method of claim 8,
The first watertight packing of the first concrete block is located outside the first inner watertight packing and the first inner watertight packing surrounding the bottom surface for the buoyancy chamber to surround the first inner watertight packing Including the first outer watertight packing,
The plurality of reinforcing bar assemblies for columns are floatable concrete block structure, characterized in that it is positioned between the first inner watertight packing and the first outer watertight packing.
8. The method of claim 7,
The concrete block assembly includes a third concrete block body in which a plurality of through-holes for the third pillars extending in the vertical direction are formed and a ceiling surface for the buoyancy chamber covering the upper portion of the buoyancy chamber is formed on the lower surface of the second concrete It includes a third concrete block installed on the upper part of the block,
The concrete column is floated, characterized in that formed along the through hole for the second column and the through hole for the third column in order to couple the first concrete block, the second concrete block, and the third concrete block to each other. Possible concrete block structures.
8. The method of claim 7,
Floatable concrete block structure, characterized in that it further comprises a standing concrete formed on the upper portion of the second concrete block so as to cover the upper portion of the buoyancy chamber.
8. The method of claim 7,
In the concrete block assembly, the second concrete block is installed in multiple stages on the upper part of the first concrete block, and is located between the second concrete blocks installed adjacent to each other up and down to block the inflow of water into the buoyancy chamber from the outside. A floating concrete block structure comprising a second watertight packing.
8. The method of claim 7,
The first concrete block body is formed with a through hole for a first column extending in the vertical direction,
The concrete column is a floating concrete block structure, characterized in that formed along the through-hole for the first column and the through-hole for the second column in order to couple the first concrete block and the second concrete block to each other.
8. The method of claim 7,
A third concrete block or standing-up concrete covering the upper part of the buoyancy chamber is provided on the upper part of the second concrete block,
A buoyancy control device for discharging the water of the buoyancy chamber to the outside or introducing water into the buoyancy chamber is provided in order to control the buoyancy of the buoyancy chamber
A floating concrete block structure characterized by
8. The method of claim 7,
Floatable concrete block structure, characterized in that the filling material is filled in the buoyancy chamber.

Images