WO2021045440A1

WO2021045440A1 - Underwater concrete block structure and construction method therefor

Info

Publication number: WO2021045440A1
Application number: PCT/KR2020/011438
Authority: WO
Inventors: 김상기
Original assignee: 김상기
Priority date: 2019-09-05
Filing date: 2020-08-27
Publication date: 2021-03-11

Abstract

A method of constructing an underwater concrete block structure (200) includes assembling a plurality of concrete blocks (10) into a concrete block assembly (100), forming a drilled borehole (102) in the underwater ground (20) under a concrete hole (101) of the concrete block assembly (100), and forming a concrete column (110) in the concrete hole (101) and the drilled borehole (102), thereby greatly increasing the stability of the underwater concrete block structure (200). An underwater concrete block structure is obtained using the method.

Description

Underwater concrete block structure and its construction method

The present invention relates to an underwater concrete block structure installed on the sea or along a river for various purposes such as a berthing facility for a port, a sofa structure installed on the shore, a breakwater, and a construction method thereof.

Underwater structures are installed underwater for various purposes, such as berthing facilities for ports, sofa structures installed on the shore, and breakwaters. In the above and below, the underwater structure means that the lower part of the underwater structure is installed in a submerged state, and the upper part of the underwater structure may protrude above the water surface or be located under the water surface.

A widely known construction technique in the construction of underwater structures is the large caisson method. The large caisson construction method has the advantage of being able to withstand large waves, but because a large caisson with a very large structure must be manufactured on land and installed underwater after transporting it to the installation point, transportation and construction costs are very high, and various constraints There are a lot of them.

In order to solve the problem of such a large caisson method, a method of forming an underwater structure by stacking small concrete blocks in several stages according to the water depth is known.

The inventor of the present invention proposes Korean Patent Registration No. 10-1355805 "Aquatic Concrete Block Structure Construction Method and Underwater Concrete Block Structure" (2014. 1. 15. Registration), and by using a concrete column, the concrete block in the upper part and the concrete block in the lower part. To have this structural integrity, a technology that allows underwater concrete block structures to have sufficient structural stability even against waves caused by large typhoons was proposed.

Meanwhile, the stability of an underwater structure such as the large caisson method is generally determined by the weight and frictional force of the underwater structure (ie, the ground contact area of the underwater structure, and the coefficient of friction between the underwater structure and the foundation ground).

This method of determining stability is based on the premise that the underwater structure is simply loaded on the foundation ground.

Therefore, even if the underwater structure is a structure integrated with a plurality of concrete blocks, the stability of the underwater structure is determined only by the weight and frictional force of the underwater structure.

Due to this problem, even though the underwater structure is a structure in which a plurality of concrete blocks are integrated, there is still a problem that the underwater structure must be constructed with the same size as the large caisson.

Meanwhile, the present inventors have proposed Korean Patent Laid-Open Publication No. 10-2019-0010203 "Concrete pack insertion device and concrete block structure construction method using the same and concrete block structure constructed through the same" (published on January 30, 2019). The prior art is to prepare a concrete pack sealed by inserting concrete and reinforcing bars extending in the vertical direction into a waterproof membrane, and receiving the concrete pack in a hollow tube-shaped tube extending in the vertical direction. After inserting the pipe body into the vertical column groove of the concrete block stack, the concrete pack is inserted into the vertical column groove by removing the pipe body from the vertical column groove while leaving the concrete pack.

Here, the pipe body is inserted into the vertical column groove of the concrete block stacked body together with the concrete pack in order to conveniently insert the concrete pack, and is completely irrelevant to the drilling work.

Meanwhile, Korean Patent Registration No. 10-1650231 "Semi-permeable breakwater construction structure with wave power generator" (registered on August 16, 2016) is known, and in this prior art, the near-entrance steel pipe is inserted into the guided steel pipe of the lower hooking while inserting the near-entrance steel pipe. After press-fitting into the ground, excavating to a predetermined depth from the inside of the near-entrance steel pipe using RCD bits, inserting a reinforcing bar net into the inside of the near-incoming steel pipe, pouring concrete, and forming an on-site casting pile integrated with the near-incoming steel pipe, and then plural Various concrete blocks are installed using cast-in-place piles.

Here, since the cast-in-place pile is a structure composed of a steel pipe, reinforcing bar mesh and concrete inserted therein, it is impossible to remove the steel pipe for cast-in-place piles. That is, this prior art has a problem that the construction cost and the like are greatly increased since the near-entry steel pipe cannot be reused.

In addition, in this prior art, various concrete blocks are installed on the cast-in-place pile, but since the cast-in-place pile and the concrete block are not completely integrated and are simply assembled, structural fragility arises over time.

In addition, this prior art press-fits the near-entry steel pipe into the submarine ground while inserting the near-entry steel pipe into the guided steel pipe of the lower hooking pre-installed on the submarine ground, but since there is no structure that can guide the upper part of the near-entry steel pipe, the near-entry steel pipe is vertically installed. It becomes very difficult to press fit.

In addition, when the verticality of the near-entry steel pipe is not precise, it becomes difficult to install a concrete block using it.

The present invention is conceived to solve the problems of the prior art as described above, forming a concrete block assembly by a plurality of concrete blocks, and the lower portion of the through hole for a concrete column through the through hole for a concrete column of the concrete block assembly. A new type of construction method and a new type of underwater concrete block structure that can significantly increase the stability of an underwater concrete block structure by forming a ground perforation in the ground and forming a concrete column along the through hole for concrete pillars and the ground perforation. I would like to propose.

In order to solve the above problems, the present invention is a concrete block manufacturing step of manufacturing a plurality of concrete blocks having vertical through holes extending in a vertical direction with a first diameter; A plurality of concrete blocks produced in the concrete block manufacturing step are installed on the upper part of the underwater ground to form a concrete block assembly in which the plurality of concrete blocks are continuously arranged in a horizontal direction, wherein the vertical through hole of the concrete block has a lower end. A concrete block assembly forming step of forming a through hole for a concrete column that is blocked by the underwater ground and extends in a vertical direction with a first diameter while the upper end is opened; After the step of forming the concrete block assembly, a protective tube having a shape extending in a vertical direction with a second diameter smaller than the first diameter is inserted into the underwater ground in a vertical direction through the through hole for the concrete column, while the cylinder for the concrete column The underwater ground located in the lower part of the study is perforated to form a ground perforation that is a continuous space with the through-hole for the concrete column and extends vertically with a diameter smaller than the first diameter, and the inserted protective tube is the barrel for the concrete column. A ground perforation forming step in which the ground perforation portion is formed in the study and located across the ground perforation portion, and the ground perforation portion is formed inside the inserted protective tube; After the step of forming the ground perforation, the vertical reinforcing bar portion formed in the vertical direction is inserted into the protective tube in a state where the lower and side portions of the vertical reinforcing bar portion are wrapped with a waterproof film, and uncured concrete is poured into the waterproofing film. A concrete column is formed along the through hole and the ground perforation, and the protective tube is removed before the poured uncured concrete is hardened, so that the waterproofing membrane is formed by the pressure of the poured uncured concrete and the underwater ground and the concrete block The concrete pillar is in close contact with the concrete pillar, a first concrete pillar portion extending in a vertical direction with a first diameter while being positioned in the through hole for the concrete pillar, and a second concrete pillar portion extending in a vertical direction with a second diameter while being positioned in the ground perforation portion. Concrete pillar forming step comprising a concrete pillar portion; It characterized in that it comprises a.

In the above, wherein the forming of the concrete block assembly comprises forming a concrete block assembly in which the plurality of concrete blocks are continuously arranged in a horizontal direction and in a vertical direction, and the vertical direction of a plurality of concrete blocks continuously arranged in the vertical direction As the through hole is continuous in the vertical direction, the lower end may be blocked by the underwater ground, and the through hole for the concrete column may be formed with the upper end open.

In the above, the upper surface of the concrete block assembly may be positioned higher than the water surface, and the upper end of the protective tube inserted in the ground perforation forming step may protrude from the upper surface of the concrete block assembly.

In the above, in the step of forming the concrete column, it is preferable to remove the protective pipe by gradually pouring the uncured concrete into the waterproof membrane and gradually raising the protective pipe.

In the above, the underwater ground includes a foundation ground artificially constructed for an underwater concrete block structure, and a foundation ground composition step of forming the foundation ground prior to the step of forming the concrete block assembly is included, and the foundation ground is , It may be any one of a basic stony ground, a substituted stony ground, a deep mixed-processed ground, a soft ground improved-treated ground, or a combination thereof.

In the above, after the step of forming the concrete column, a step of forming a stand concrete part on the upper part of the concrete block assembly may be added.

In the above, the concrete block has a space for filling inside, and after the step of forming the concrete block assembly, an inside filling step of filling the inside filling space in the inside filling space may be added.

In another idea of the present invention, a plurality of concrete blocks having vertical through holes extending in a vertical direction with a first diameter are installed on the upper part of the underwater ground so that the plurality of concrete blocks are continuously arranged in at least a horizontal direction. It comprises a block assembly, and a plurality of concrete pillars formed along a ground perforation formed by perforating the underwater ground with a diameter smaller than the first diameter and located below the vertical through-hole and the up-down through-hole; The concrete pillar extends in the vertical direction to a second diameter smaller than the first diameter while being positioned in the vertical through hole and extending in the vertical direction to the first diameter and the ground perforation. It is made including a second concrete column portion; The concrete pillar is formed in a vertical direction and is in close contact with the underwater ground and the concrete block while surrounding the vertical reinforcement portion disposed across the vertical through hole and the ground perforation, and the lower and side portions of the vertical reinforcement portion. It comprises a waterproof membrane and concrete cured by pouring into the inside of the waterproof membrane; The plurality of concrete blocks of the concrete block assembly are bound to the underwater ground by the concrete pillars; An underwater concrete block structure is provided, characterized in that.

In the above, the concrete block assembly is one in which the plurality of concrete blocks are arranged in a horizontal direction and in a vertical direction, and the concrete column has a vertical penetration hole of a plurality of concrete blocks continuously arranged in the vertical direction. It may be formed along a through hole for a concrete column formed while continuing in a direction and a ground hole formed by drilling the underwater ground located under the through hole for a concrete column.

As described above, the present invention forms a concrete block assembly by a plurality of concrete blocks, and forms a ground perforation in the lower part of the through hole for a concrete column through the through hole for a concrete column of the concrete block assembly, and A new type of construction method is provided that can significantly increase the stability of an underwater concrete block structure by allowing a concrete column to be formed along the through hole and the ground perforation.

Accordingly, a plurality of concrete blocks constituting a concrete block assembly are bound to the underwater ground by a concrete column, thereby greatly improving the stability of the underwater concrete block structure.

In addition, as a result of the improved stability, it is possible to significantly reduce the size of the underwater concrete block structure compared to the existing large caisson method.

This is because even when the weight of the underwater concrete block structure and the frictional force of the underwater concrete block structure against the underwater ground are reduced, the binding force to the underwater ground by the concrete column can compensate for this and have sufficient stability.

1 is a perspective view of a concrete block used in the construction method of the underwater concrete block structure according to the first embodiment of the present invention,

FIG. 2 is a schematic plan view of a state in which a concrete block assembly is formed on the upper part of the underwater ground by installing the concrete block of FIG. 1;

3 is a schematic cross-sectional view of FIG. 2;

4 is a view of a state in which a ground perforation portion is formed after the formation of the concrete block assembly of FIG. 3;

5 to 8 are views sequentially showing a process of forming a concrete column after the formation of the ground perforation of FIG. 4;

9 is a cross-sectional view of a concrete block used in the construction method of the underwater concrete block structure according to the second embodiment of the present invention,

10 is a perspective view of the concrete block of FIG. 9,

11 is a view of a state in which a concrete block assembly is formed on the upper part of the underwater ground by installing the concrete block of FIG. 9;

12 is a view of a state in which a ground perforation portion is formed after the formation of the concrete block assembly of FIG. 11;

13 to 16 are views sequentially showing a process of forming a concrete column after the formation of the ground perforation of FIG. 12;

17 is a cross-sectional view of an underwater concrete block structure constructed according to a third embodiment of the present invention,

18 is a view showing a separate cross-section of a plurality of concrete blocks used in FIG. 17;

19 is a cross-sectional view of an underwater concrete block structure constructed according to a fourth embodiment of the present invention,

20 is a perspective view of a concrete block used in the construction method of the underwater concrete block structure according to the fifth embodiment of the present invention,

Figure 21 is a cross-sectional view of the concrete block of Figure 21,

22 is a cross-sectional view of an underwater concrete block structure constructed according to a fifth embodiment of the present invention.

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 the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary.

First, the construction method of the underwater concrete block structure according to the first embodiment according to the present invention will be described.

1 is a perspective view of a concrete block used in the construction method of an underwater concrete block structure according to a first embodiment of the present invention, and FIG. 2 is a concrete block assembly formed on the upper part of the underwater ground by installing the concrete block of FIG. A plan view of the state, FIG. 3 is a cross-sectional conceptual view of FIG. 2, FIG. 4 is a view of a state in which a ground perforation portion is formed after the concrete block assembly of FIG. 3 is formed, and FIGS. 5 to 8 are a ground perforation portion of FIG. 4 It is a diagram showing the process of forming a concrete column after formation in order.

(1) Concrete block production stage

A concrete block 10 as shown in FIG. 1 is manufactured.

Although the shape of the concrete block 10 may be formed in various ways, it is preferable that at least two or more vertical through holes 11 extending in the vertical direction are formed.

The vertical through hole 11 extends in the vertical direction with a first diameter D1.

Depending on the embodiment, a space for filling may be formed in the concrete block 10, or a space for another purpose or a shape for another purpose may be formed.

The vertical through-hole 11 may be a hole formed in the concrete block 10 as shown in FIG. 1, but as shown in FIGS. 20 and 21, a hollow pipe is inserted into the concrete block to use the inside of the hollow pipe as a vertical through-hole. May be.

In the concrete block 10 of FIG. 1, for convenience of understanding, the size of the vertical through-hole 11 is very exaggerated.

(2) Concrete block assembly formation step

Concrete in which a plurality of concrete blocks 10 produced in the concrete block manufacturing step are installed on the upper part of the underwater ground 20 as shown in FIG. 3, and a plurality of concrete blocks 10 are arranged in a horizontal direction as shown in FIG. To form a block assembly (100).

2 is a plan view of the installed state, and FIG. 2 is a cross-sectional view of the installed state.

The vertical through-hole 11 of the concrete block 10 constituting the concrete block assembly 100 forms a through hole 101 for a concrete column whose lower end is blocked by the underwater ground 20 and the upper end is opened.

That is, in this embodiment, the concrete block is manufactured in a large size and is installed only in one step in the vertical direction, and each vertical through hole 11 of each concrete block 10 functions as a through hole 101 for a concrete column. do.

Therefore, the through hole 101 for the concrete column has a shape that extends in the vertical direction with the first diameter D1.

The underwater ground 20 of this embodiment corresponds to an underwater ground that is not artificially created, that is, the sea floor, but according to the embodiment, the underwater ground 20 is a concept including a foundation ground artificially formed for an underwater concrete block structure. .

If the foundation ground is formed on the upper part of the underwater ground 20 and the concrete block assembly 100 is formed thereafter, a foundation ground construction step of forming the foundation ground before the concrete block assembly formation step is further required.

The foundation ground may be any one or a combination of the ground sandstone ground, the substituted sandstone ground, the deep mixed ground ground, the soft ground improvement ground ground.

When the ground is soft and the necessary support cannot be obtained, the ground is replaced according to the replacement method, consolidation method, dewatering method, drainage method, vibration compaction method, compaction sand pile method, blasting method, chemical injection method, etc. It refers to the ground that has been improved according to the improved soft ground improvement method.

Although FIG. 3 shows a cross-sectional view of the concrete block assembly, the concrete block assembly 100 is a state in which a plurality of concrete blocks 10 are continuously arranged in a horizontal direction as shown in FIG. 2.

(3) Ground perforation formation step

After the step of forming the concrete block assembly, as shown in FIG. 4, the underwater ground 20 located under the through hole 101 for the concrete column is perforated, and the ground hole 102 is a space continuous with the through hole 101 for the concrete column. To form.

In this embodiment, when forming the ground drilling portion 102 by drilling the underwater ground 20 located under the through hole 101 for a concrete column, a protective tube in the form of extending vertically with a second diameter (D2) Insert 30 into the underwater ground 20 in the vertical direction through the through hole 101 for the concrete column.

The lower part of the through hole 101 for a concrete column while inserting the protective pipe 30 in the vertical direction with a second diameter (D2) into the underwater ground 20 in the vertical direction through the through hole 101 for a concrete column Drill the underwater ground (20) located at.

When the ground perforation portion 102 is formed in this way, the inserted protective pipe 30 is positioned across the concrete column perforation portion 101 and the ground perforation portion 102, and the ground perforation portion ( 102) is formed.

At this time, the protective pipe 30 prevents the surrounding underwater ground 20 from collapsing into the ground drilling portion 102 during or after the drilling operation, or various foreign substances from flowing into the ground drilling portion 102.

In addition, the protective tube 30 serves to protect the waterproof membrane 112 when inserting the vertical reinforcing bars 111 and the waterproof membrane 112 to be described later into the protective tube 30.

The length of the protective tube 30 is preferably formed longer than the sum of the length of the through hole 101 for the concrete column and the length of the ground perforation 102. Accordingly, the waterproof film 112 can be inserted easily.

That is, as shown in Figure 4, the upper surface of the concrete block assembly 100 is positioned higher than the water surface, and the upper end of the protective tube 30 inserted in the ground perforation formation step protrudes from the upper surface of the concrete block assembly 100 Has been. That is, the upper end of the protective tube 30 is positioned higher than the water surface and is positioned higher than the upper surface of the concrete block assembly 100. Therefore, the operation of inserting the waterproof film 112 or the like into the protective tube 30 can be performed very easily.

In addition, the protective pipe 30 is in the form of a hollow pipe, and the second diameter D2 of the protective pipe 30 is smaller than the first diameter D1 of the through hole 101 for a concrete column. This facilitates the insertion of the protective tube 30. That is, when the protection tube 30 is inserted or when the protection tube 30 is removed, the protection tube 30 is prevented from being caught in the through hole 101 for a concrete column.

In addition, when the protection tube 30 is inserted with reference to the through hole 101 for a concrete column when the protection tube 30 is inserted, the protection tube 30 can be inserted while having a relatively precise vertical degree.

Meanwhile, the protective tube 30 is preferably removed after the step of forming the ground perforation.

Meanwhile, a drilling equipment is required for the operation of drilling the underwater ground 20, and in this embodiment, since the upper surface of the concrete block assembly 100 is located higher than the water surface, the drilling equipment is the upper part of the concrete block assembly 100 If it is placed on the surface to perform drilling, it becomes a dry operation (that is, the wet operation on a barge becomes unnecessary), and working in the same environment as the land operation can increase work efficiency.

(4) Concrete pillar formation stage

After the ground perforation forming step, the concrete pillar 110 is formed along the through hole 101 for the concrete pillar and the ground perforation 102.

The step of forming a concrete column in this embodiment is performed in stages as shown in FIGS. 5 to 8.

First, as shown in FIGS. 5 and 6, the vertical reinforcing bars 111 formed in the vertical direction are inserted into the through-holes 101 for concrete columns and the ground perforations 102.

In this embodiment, since the protective pipe 30 is already located in the through hole 101 and the ground perforation 102 for a concrete column, the vertical reinforcement part 111 is inserted into the protective pipe 30.

At this time, the bottom and side portions of the vertical reinforcing bars 111 are wrapped with a waterproof membrane 112 and inserted into the concrete column through-holes 101 and the ground perforations 102.

Meanwhile, since the waterproof film 112 or the like is inserted through the protective tube 30, there is no risk of being torn or damaged while the waterproof film 112 comes into contact with the underwater ground 20 or the like.

In this way, after the vertical reinforcement portion 111 wrapped with the waterproof membrane 112 is inserted into the protective tube 30, concrete 113 is poured into the waterproof membrane 112 as shown in FIGS. 7 and 8. To form a concrete column (110).

7 is a view of a state in which the protective tube 30 is slightly raised while pouring a small amount of uncured concrete 113 (fresh concrete) inside the waterproof membrane 112.

That is, the lower end of the protective pipe 30 in FIG. 7 is a state in which the protective pipe 30 is raised so as to have a state just out of the ground perforated portion 102, and the inside of the waterproof film 112 is in the ground perforated portion 102 area. The necessary uncured concrete 113 is in a poured state.

Thereby, the waterproof membrane 112 located in the ground perforation 102 is in close contact with the underwater ground 20 by the pressure of the uncured concrete 113.

In this way, the uncured concrete 113 is gradually poured into the waterproof membrane 112 and the protective tube 30 is gradually raised, and finally the protective tube 30 is completely removed as shown in FIG. 8. Meanwhile, the work of pouring the uncured concrete 113 in the entire through-hole 101 for the concrete column and the ground perforation 102 is completed.

That is, the protective tube 30 may be removed before the poured uncured concrete 113 is hardened.

In this way, when the uncured concrete 113 is poured into the waterproof membrane 112, the waterproof membrane 112 is in close contact with the underwater ground 20 and the concrete block 10 under the pressure of the uncured concrete 113, and then It becomes a concrete column 110 through a curing process.

If the uncured concrete 113 is poured into the waterproof membrane 112 at once, and then the protective tube 30 may be raised to remove the protective tube 30, in this case, the waterproof membrane 112 is not cured concrete 113 It may be difficult to separate the protective tube 30 from the waterproof film 112 because it is strongly adhered to the inside of the protective tube 30 at a pressure of ).

In this way, the concrete column 110 is formed on the concrete block assembly 100 to form the underwater concrete block structure 200.

That is, the concrete pillar 110 is positioned in the first concrete pillar portion 110a extending in the vertical direction with the first diameter while being positioned in the through hole portion 101 for the concrete pillar, and the second diameter while being positioned in the ground perforation portion 102 It consists of including a second concrete column portion (110b) extending in the vertical direction.

The role of the concrete column 110 in the underwater concrete block structure 200 will be described.

In addition, a plurality of concrete blocks 10 constituting the concrete block assembly 100 are bound to the underwater ground 20 by the concrete pillar 110.

Therefore, in order to evaluate the stability of the underwater concrete block structure 200 of this embodiment, in addition to the weight of the underwater concrete block structure 200 and the frictional force on the underwater ground 20 of the underwater concrete block structure 200, the concrete column The binding force to the underwater ground (20) by (110) should be considered together.

That is, the underwater concrete block structure 200 is significantly improved in stability due to the binding force to the underwater ground 20 by the concrete column 110.

As a result of improving the stability as described above, if it is sufficient to have the same stability as the existing large caisson, it is possible to significantly reduce the underwater concrete block structure 200.

That is, even when the weight of the underwater concrete block structure 200 and the frictional force of the underwater concrete block structure 200 against the underwater ground 20 are reduced, the binding force to the underwater ground 20 by the concrete column 110 compensates for this. Therefore, it can have sufficient stability.

Hereinafter, a second embodiment according to the present invention will be described.

9 is a cross-sectional view of a concrete block used in the construction method of an underwater concrete block structure according to a second embodiment of the present invention, FIG. 10 is a perspective view of the concrete block of FIG. 9, and FIG. 11 is a concrete block of FIG. Thus, it is a view of a state in which a concrete block assembly is formed on the upper part of the underwater ground, FIG. 12 is a view in a state in which a ground perforation part is formed after the formation of the concrete block assembly of FIG. 11, and FIGS. 13 to 16 are the ground fabric of FIG. It is a drawing showing the process of forming a concrete column after the formation of the study.

Hereinafter, only differences from the first embodiment will be mainly described, and descriptions of the same parts as those of the first embodiment will be omitted.

(1) Concrete block production stage

In the case of this embodiment, a concrete block 10 having a relatively small size as shown in FIGS. 9 and 10 is manufactured.

(2) Concrete block assembly formation step

A concrete block assembly in which a plurality of concrete blocks 10 manufactured in the concrete block production stage are installed on the upper part of the underwater ground 20 so that a plurality of concrete blocks 10 are continuously arranged horizontally and vertically as shown in FIG. Form 100.

In FIG. 11, it can be seen that the concrete blocks 10 are continuously arranged in the vertical direction, but the concrete block assembly 100 is a state in which a plurality of concrete blocks 10 are continuously arranged in the horizontal direction. Since the continuous arrangement structure of the plurality of concrete blocks 10 in the horizontal direction is a general technique, detailed descriptions are omitted.

In the concrete block assembly 100, the vertical through-holes 11 of the plurality of concrete blocks 10 are continuously arranged in the vertical direction, while the lower end is blocked by the underwater ground 20 and the upper end is opened. The through hole 101 for the concrete column is formed.

That is, in this embodiment, the concrete blocks 10 are installed in two or more stages in the vertical direction, and the vertical through holes 11 of the plurality of concrete blocks 10 stacked in the vertical direction are combined to be used for one concrete column. The through hole 101 is formed.

Thereafter, (3) the step of forming the ground perforation and (4) the step of forming the concrete column are sequentially performed.

The role of the concrete column 110 in the underwater concrete block structure 200 according to this embodiment will be described.

In contrast to the first embodiment, this embodiment is in a state in which a plurality of concrete blocks 10 are bound to the underwater ground 20 by a concrete column 110, as well as a plurality of As the concrete blocks 10 are bound to each other by the concrete columns 110, the concrete block assembly 100 has structural integrity.

Hereinafter, an underwater concrete block structure constructed according to a third embodiment of the present invention will be described.

FIG. 17 is a cross-sectional view of an underwater concrete block structure constructed according to a third embodiment of the present invention, and FIG. 18 is a view showing a separate cross-section of a plurality of concrete blocks used in FIG. 17.

In FIG. 17, after a part of the underwater ground 20 is excavated, the replacement stony ground 21 is formed as the foundation ground, and the foundation stony ground 22 is formed on the upper portion of the displacement stony ground 21, and then the foundation stony ground ( The underwater concrete block structure 200 was constructed on the upper part of 22).

That is, the foundation ground construction step was carried out before the concrete block aggregate formation step.

In addition, in FIG. 17, after the concrete block assembly 100 and the concrete column 110 are formed, the filling step and the upper concrete part forming step are further added.

That is, as shown in FIG. 18, a space for filling the inside of the plurality of concrete blocks 10 is formed.

The inner filling space 12 of the concrete block 10, after forming the concrete block assembly 100, fills the inner filling material 120 (sand, gravel, sandstone, etc.).

In addition, after the concrete column 110 is formed, to form the upper part of the concrete block assembly 100, the upper part of the concrete 130.

That is, after the step of forming the concrete column, the step of forming the upper concrete portion may be further added.

Hereinafter, an underwater concrete block structure constructed according to a fourth embodiment of the present invention will be described.

19 is a cross-sectional view of an underwater concrete block structure constructed according to a third embodiment of the present invention.

In FIG. 19, after a part of the underwater ground 20 is improved to the deep-mixed ground 23, the foundation stony ground 22 is formed on the top of the deep-mixed ground 23, and then the foundation stony ground 22. The underwater concrete block structure 200 was constructed on the upper part of the.

That is, in the present embodiment, as the foundation ground, the deep mixed-processed ground 23 and the rubble ground 22 were combined.

In addition, in FIG. 19, after the concrete block assembly 100 and the concrete column 110 are formed, the filling step and the upper concrete part forming step are further added.

That is, after forming the concrete block assembly 100, the filling material 120 (sand, gravel, sandstone, etc.) is filled, and the upper part of the concrete block assembly 100 is formed with a concrete part 130.

Hereinafter, an underwater concrete block structure constructed according to a fifth embodiment of the present invention will be described.

Figure 20 is a perspective view of a concrete block used in the construction method of the underwater concrete block structure according to the fifth embodiment of the present invention, Figure 21 is a cross-sectional view of the concrete block of Figure 21, Figure 22 is a fifth embodiment of the present invention It is a cross-sectional view of an underwater concrete block structure constructed by.

The concrete block 10 of this embodiment, as shown in Figs. 20 and 21, consists of a concrete upper plate 13, a concrete lower plate 14, and a vertical connection pipe 15.

The concrete upper plate 13 and the concrete lower plate 14 are arranged to be spaced apart from each other in the vertical direction so that seawater may flow therebetween.

Depending on the embodiment, other components may be added between the concrete upper plate 13 and the concrete lower plate 14.

The vertical connection pipe 15 has an upper end inserted into the concrete upper plate 13, a lower end inserted into the concrete lower plate 14, and an upper and lower middle portion between the concrete upper plate 13 and the concrete lower plate 14 to the outside. Exposed.

In addition, the vertical connection pipe 15 is in the form of a hollow pipe in which the vertical through hole 11 is formed in the vertical direction.

Using such a concrete block 10, the underwater concrete block structure 200 as shown in FIG. 22 is formed.

In FIG. 22, the concrete column 110 is formed along a through-hole for a concrete column and a ground perforation in which the vertical through-holes 11 of the vertical connection pipe 15 are vertically formed.

In FIG. 22, after the foundation sandstone ground 22 was previously formed on the upper part of the underwater ground 20, the underwater concrete block structure 200 was constructed on the upper part of the foundation sandstone ground 22.

In addition, a near-employment concrete block 24 is disposed on one side of the foundation stony ground 22, and the near-employment concrete block 24 is also provided with a vertical through hole.

The near-employment concrete block 24 can be seen in a modified form of FIG. 9.

As described above, the foundation ground construction step was performed before the concrete block assembly formation step.

The underwater concrete block structure 200 of this embodiment creates an environment in which seawater can freely flow inside.

That is, seawater can freely flow through the outside of the vertical connection pipe 15, and a concrete column is formed through the inside of the vertical connection pipe 15 so that a plurality of concrete blocks are bound to each other.

It can be seen from this embodiment that the shape of the concrete block can be modified in a wide variety.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that other specific forms can be easily modified 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 limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

The present invention can be used to construct an underwater concrete block structure installed on the sea or along a river for various purposes, such as a berthing facility for a port, a sofa structure installed on the shore, a breakwater, etc.

Claims

A concrete block manufacturing step of manufacturing a plurality of concrete blocks having vertical through holes extending in the vertical direction with a first diameter;

A plurality of concrete blocks produced in the concrete block manufacturing step are installed on the upper part of the underwater ground to form a concrete block assembly in which the plurality of concrete blocks are continuously arranged in a horizontal direction, wherein the vertical through hole of the concrete block has a lower end. A concrete block assembly forming step of forming a through hole for a concrete column that is blocked by the underwater ground and extends in a vertical direction with a first diameter while the upper end is opened;

After the step of forming the concrete block assembly, a protective tube having a shape extending in a vertical direction with a second diameter smaller than the first diameter is inserted into the underwater ground in a vertical direction through the through hole for the concrete column, while the cylinder for the concrete column The underwater ground located in the lower part of the study is perforated to form a ground perforation that is a continuous space with the through-hole for the concrete column and extends vertically with a diameter smaller than the first diameter, and the inserted protective tube is the barrel for the concrete column. A ground perforation forming step in which the ground perforation portion is formed in the study and located across the ground perforation portion, and the ground perforation portion is formed inside the inserted protective tube;

After the step of forming the ground perforation, the vertical reinforcing bar portion formed in the vertical direction is inserted into the protective tube in a state where the lower and side portions of the vertical reinforcing bar portion are wrapped with a waterproof film, and uncured concrete is poured into the waterproofing film. A concrete column is formed along the through hole and the ground perforation, and the protective tube is removed before the poured uncured concrete is hardened, so that the waterproofing membrane is formed by the pressure of the poured uncured concrete and the underwater ground and the concrete block The concrete pillar is in close contact with the concrete pillar, a first concrete pillar portion extending in a vertical direction with a first diameter while being positioned in the through hole for the concrete pillar, and a second concrete pillar portion extending in a vertical direction with a second diameter while being positioned in the ground perforation portion. Concrete pillar forming step comprising a concrete pillar portion;

Underwater concrete block structure construction method comprising a.
The method of claim 1,

In the step of forming the concrete block assembly, a concrete block assembly in which the plurality of concrete blocks are continuously arranged in a horizontal direction and an up-down direction is formed, and the vertical through holes of the plurality of concrete blocks continuously arranged in the vertical direction are vertically arranged. An underwater concrete block structure construction method, characterized in that the through hole for the concrete column is formed in which the lower end is blocked by the underwater ground while continuing in the direction and the upper end is opened.
The method of claim 1,

The upper surface of the concrete block assembly is positioned higher than the water surface, and the upper end of the protective pipe inserted in the ground perforation forming step protrudes from the upper surface of the concrete block assembly.
The method of claim 1,

In the step of forming the concrete column, the uncured concrete is gradually poured into the waterproof membrane, and the protective pipe is gradually raised to remove the protective pipe.
The method of claim 1,

The underwater ground includes a foundation ground artificially constructed for an underwater concrete block structure,

A foundation ground composition step of forming the foundation ground prior to the concrete block assembly formation step is included,

The foundation ground is an underwater concrete block structure construction method, characterized in that any one or a combination of the ground stony ground, substituted stony ground, deep mixed ground, and soft ground improved ground.
The method of claim 1,

After the step of forming the concrete column, the step of forming a standing concrete part for forming a standing concrete part on the upper part of the concrete block assembly is added.
The method of claim 1,

The concrete block is an underwater concrete block structure construction method, characterized in that the inner filling space is formed, and after the step of forming the concrete block assembly, an inside filling step of filling the filling material into the inside filling space is added.
A plurality of concrete blocks having vertical through-holes extending in a vertical direction with a first diameter are installed on the upper part of the underwater ground so that the plurality of concrete blocks are continuously arranged in at least a horizontal direction, and a concrete block assembly in which the plurality of concrete blocks are continuously arranged in a horizontal direction, and the vertical direction It comprises a through hole and a plurality of concrete pillars located below the vertical through hole and formed along a ground hole formed by drilling the underwater ground with a diameter smaller than the first diameter;

The concrete pillar extends in the vertical direction to a second diameter smaller than the first diameter while being positioned in the vertical through hole and extending in the vertical direction to the first diameter and the ground perforation. It is made including a second concrete column portion;

The concrete pillar is formed in a vertical direction and is in close contact with the underwater ground and the concrete block while surrounding the vertical reinforcement portion disposed across the vertical through hole and the ground perforation, and the lower and side portions of the vertical reinforcement portion. It comprises a waterproof membrane and concrete cured by pouring into the inside of the waterproof membrane;

The plurality of concrete blocks of the concrete block assembly are bound to the underwater ground by the concrete pillars;

Underwater concrete block structure, characterized in that.
The method of claim 8,

The concrete block assembly is that the plurality of concrete blocks are continuously arranged in a horizontal direction and an up-down direction,

In the concrete column, a through hole for a concrete column formed while the vertical through-holes of a plurality of concrete blocks arranged in a vertical direction are continuous in a vertical direction, and the underwater ground located under the through hole for the concrete column is perforated. Underwater concrete block structure, characterized in that formed along the formed ground perforation.