KR102747447B1 - Multi-functional floating body and floating structure having thereof - Google Patents

Abstract

The present invention relates to a multifunctional buoyancy body and a floating structure using the same. The multifunctional buoyancy body includes: a buoyancy body part having a built-in buoyancy providing means and provided in a block shape; an upper protrusion part which is formed to protrude from an upper surface of the buoyancy body part except for both ends of the buoyancy body in the left and right width direction, and forms a pipe-receiving groove through a step at both ends of the buoyancy body in the left and right width direction; and a pipe-detachment prevention plate part which is provided in a plate shape, at least one of which is installed on an upper surface of the upper protrusion part, and whose left and right widths are longer than the width of the upper protrusion part so as to cover an upper surface of a pipe placed in the pipe-receiving groove.

Description

{MULTI-FUNCTIONAL FLOATING BODY AND FLOATING STRUCTURE HAVING THEREOF}

The present invention relates to a multifunctional buoyancy body and a floating structure using the same.

Recently, as the need for alternative spaces has increased due to the depletion of terrestrial space caused by the expansion of industrial scale in preparation for abnormal climate, the emphasis on environmental protection, and restrictions on the use of terrestrial space due to civil complaints, the need for economic and eco-friendly creation of marine space, an undeveloped area with enormous growth potential, is increasing.

The problem of utilizing marine space in advanced maritime countries is mainly focused on industrial infrastructure such as terminals, offshore airports, offshore containers, LNG, and terminals. The technical possibility of offshore industrial infrastructure is secured, and the most important thing mentioned in this regard is the development of offshore floating structures.

Marine floating structures can be broadly classified into floating, bottom-mounted, and buried types. In particular, floating structures can be classified into pontoon, semi-submersible, and scaffolding hybrid types.

Recently, various new technologies have been proposed in relation to the development of floating marine structures for the utilization of such marine spaces, and in particular, there is a growing demand for technologies that can ensure sufficient safety and minimize aging during the long-term use of structures installed in marine spaces.

In this regard, a prior art document regarding a conventional technology for providing a floating structure with excellent durability and ease of installation of the facility by inserting and fixing one or more double-structured connecting pipes to provide buoyancy to the facility is “Floating Structure” of Korean Patent Publication No. KR 10-2196017 (hereinafter referred to as “prior art”).

However, in the case of existing technologies related to buoyancy bodies or floating structures, including prior art technologies, there was a problem in that the connection between each part of the floating structure was not stably formed, and in particular, sufficient convenience was not provided to workers performing assembly work, which affected the structural stability of the assembled result.

In addition, in the case of existing technologies related to buoyancy bodies or floating structures, including prior technologies, structural stability is not maintained for a long time due to being easily affected by various external factors arising from the installation environment, and problems frequently occur in which parts are detached or damaged from the initial installation location.

The present invention was created to solve the above problems, and the purposes of the present invention are as follows.

First, we aim to provide a technology that can maintain structural stability for a long period of time without easily being deformed or dislodged from the initial installation location when installing a pipe structure on top of a buoyancy body and interconnecting it.

Second, we aim to provide technology that can provide sufficient working space for workers to use various fastening means when assembling floating structures based on buoyancy bodies and pipe structures, and ensure sufficient convenience of work.

Third, after the installation of a floating structure, we aim to provide a technology to minimize collisions between adjacent buoyant bodies due to various influences in the installation environment, such as waves, and to ensure that even if a collision does occur, the mutual influence is minimal.

Fourth, we aim to provide a technology that minimizes the influence from the bottom and ensures that the multifunctional buoyancy body is placed structurally stable by considering the situation in which it is placed on the bottom before installing the floating structure.

Fifth, after the installation of a floating structure, we aim to provide a technology that can sufficiently secure the stability of the installation structure from various influences in the installation environment, such as waves, and provide a rolling function to significantly reduce the risk of damage to the components.

Sixth, we aim to provide a technology that protects the lower part of the buoyancy body from situations where it may touch the bottom through a separate configuration and enables structurally more stable use and management by directing the center of gravity downward.

Seventh, we aim to provide a technology that enables the installation of various functional members on the side of a floating structure, and further provides sufficient convenience during the installation process.

In order to achieve the above object, the multifunctional buoyancy body of the present invention comprises: a buoyancy body part having a buoyancy providing means built-in and provided in a block shape; an upper protrusion part formed to protrude upwardly in an area excluding both ends of the buoyancy body part in the left and right width direction from the upper surface of the buoyancy body part, thereby forming a pair of pipe-receiving grooves through a step at both ends of the buoyancy body part in the left and right width direction; and a pipe-detachment prevention plate part provided in a plate shape, at least one of which is installed on the upper surface of the upper protrusion part, and whose left and right widths are longer than the width of the upper protrusion part so as to cover the upper surface of a pipe placed in the pipe-receiving groove.

Here, the buoyancy body portion forms an inclined surface with the front and rear cross sections so as to have a tapered shape in which the front-back direction length of the lower surface is shorter than the front-back direction length of the upper surface.

In addition, the buoyancy body part has at least one or more bolt assembly recesses recessed inwardly on each of the left and right sides.

And the multifunctional buoyancy body further includes a pair of lower protrusions formed so that the two end areas of the left and right width directions of the buoyancy body protrude downward from the lower surface of the buoyancy body, thereby forming a recessed groove for providing rolling safety that is recessed upward between the two ends.

In addition, the multifunctional buoyancy body further includes a bottom protection plate portion which is provided in a plate shape and is fixedly connected to cover the lower surface of each of the pair of lower protrusions.

Meanwhile, in order to achieve the above object, a floating structure using a multifunctional buoyancy body of the present invention comprises: a buoyancy body part having a buoyancy providing means built-in and formed in a block shape; and an upper protrusion formed so that an area except for both ends of the buoyancy body part in the left and right width direction is protruded from the upper surface of the buoyancy body part, and a pair of pipe mounting grooves are formed through a step at both ends of the buoyancy body part in the left and right width direction; a plurality of multifunctional buoyancy bodies arranged in a row along the longitudinal direction of the front and rear to form rows, and the rows formed are arranged so that at least one row is formed along the left and right width direction; a plurality of vertical pipes as a rod-shaped structure, the longitudinal direction of which is oriented in the front and rear direction, and each of the plurality of multifunctional buoyancy bodies is mounted and installed in each of the pair of pipe mounting grooves based on each row; a plurality of horizontal pipes as a rod-shaped structure, the longitudinal direction of which is oriented in the left and right direction, and the plurality of multifunctional buoyancy bodies are arranged so as to form a predetermined separation space along the row in which the plurality of multifunctional buoyancy bodies are connected, and are installed on the upper surfaces of the plurality of vertical pipes and the upper surfaces of the upper protrusions; As a plate-shaped structure, it includes at least one footplate installed on the upper surface of a plurality of horizontal pipes; and as a bar-shaped structure, it includes at least one frame pipe installed on the upper surface of a plurality of horizontal pipes to surround the entire structural boundary to which the at least one footplate is connected and form an outer frame.

Here, the multifunctional buoyancy body further includes a pipe detachment prevention plate portion, which is provided in a plate shape and at least one of which is installed on the upper surface of the upper protrusion, and whose left-right width is longer than the width of the upper protrusion portion so as to cover the upper surfaces of a plurality of vertical pipes placed in the pipe mounting groove.

In addition, the pipe separation prevention plate is arranged so that a gap is formed as a predetermined amount of free space on both sides in the longitudinal direction in some of the separation spaces provided between adjacent horizontal pipes among the plurality of horizontal pipes.

In addition, the buoyancy body portion has a tapered shape in which the front and rear end surfaces form an inclined surface so that the front and rear end surfaces have a shorter front-to-back length than the front-to-back length of the upper surface.

In addition, the buoyancy body part has at least one or more bolt assembly recesses recessed inwardly on each of the left and right sides.

And the multifunctional buoyancy body further includes a pair of lower protrusions formed so that the two end areas of the left and right width directions of the buoyancy body protrude downward from the lower surface of the buoyancy body, thereby forming a recessed groove for providing rolling safety that is recessed upward between the two ends.

In addition, the multifunctional buoyancy body further includes a bottom protection plate portion which is provided in a plate shape and is fixedly connected to cover the lower surface of each of the pair of lower protrusions.

According to the present invention, the following effects are achieved.

First, the vertical pipe is stably installed by the pipe-mounting groove structure provided on both the left and right sides of the upper surface of the multifunctional buoyancy body, and the pipe-disengagement prevention plate part mounted on the upper protrusion to cover the upper surface of the vertical pipe placed in the pipe-mounting groove, so that the vertical pipe does not easily come off from the installation location even under the influence of external force.

Second, by providing sufficient space for bolt assembly work through the vertical pipe placed over the multifunctional buoyancy body and the bottom protection plate part that supports and protects the bottom of the multifunctional buoyancy body through the bolt assembly recess formed on the side of the multifunctional buoyancy body, it provides ease of connection installation and release work.

Third, the structure of the multifunctional buoyancy body has a tapered shape that becomes shorter as it goes down, forming inclined surfaces on the front and rear sections, thereby minimizing the influence of movement, bending, separation, and collision of the connection structure between buoyancy bodies due to the influence of water flow in the installation space, such as waves.

Fourth, a pair of lower protrusions are formed on the lower part of the multifunctional buoyancy body to minimize the area touching the bottom and provide structural safety.

Fifth, a recessed groove for providing rolling stability is formed by being recessed toward the center due to a pair of lower protrusions formed at the bottom of the multifunctional buoyancy body, thereby avoiding and damping rolling caused by water movement or external force transmitted from the outside, thereby increasing the stability of the installation structure and greatly reducing the risk of damage.

Sixth, the bottom protection plate that covers each lower surface of a pair of lower protrusions formed at the bottom of the multifunctional buoyancy body serves as a protective cover to prevent the multifunctional buoyancy body from touching the bottom, and the center of gravity is directed downwards of the multifunctional buoyancy body (110), thereby enabling more structurally stable use and management.

Seventh, the space provided as a gap between the pipe detachment prevention plate and the horizontal pipe not only secures space for installing various functional members, such as wire mesh, on the end side of the horizontal pipe by utilizing an electro fusion system, but also further strengthens the connectivity between structures, such as vertical pipes and horizontal pipes.

Eighth, depending on the implementation, at least one of the structures, such as vertical pipes and horizontal pipes, may be made of durable aluminum pipes, and the outer surface of such pipes may be coated with plastic to improve corrosion resistance and durability, and installation may be possible by fusion without using bolts when assembling with a footing.

Ninth, by installing an aluminum profile on the upper side of the multifunctional buoyancy body according to the implementation, various accessory-type parts such as mooring posts, insect repellents, and pile guides can be easily installed, and depending on the type of parts installed, the durability of the buoyancy body against impact and bending stress can be improved.

Figure 1 is a perspective view illustrating the structure of a floating structure according to the present invention.
Figure 2 is a bottom perspective view illustrating the structure of a floating structure according to the present invention.
Figure 3 is an enlarged view showing the shear-side structure of a multifunctional buoyancy body connected in a floating structure according to the present invention.
Figure 4 is a perspective view showing the structure of a floating structure according to the present invention excluding the footing and frame pipe.
Figure 5 is an enlarged view showing the shear-side structure excluding the footing and frame pipe in the floating structure according to the present invention.
Figure 6 is a perspective view illustrating the structure of a multifunctional buoyancy device according to the present invention.
Figure 7 is a side perspective view illustrating the structure of a multifunctional buoyancy device according to the present invention.

A preferred embodiment of the present invention will be described in more detail with reference to the attached drawings, but technical parts already known will be omitted or compressed for the sake of brevity.

<Description of a floating structure using a multi-functional buoyancy body>

Referring to FIG. 1, a floating structure (100) using a multifunctional buoyancy body (110) of the present invention is arranged such that a plurality of multifunctional buoyancy bodies (110) are connected in a row and then spaced apart from each other along the row, and based on the arrangement of the plurality of multifunctional buoyancy bodies (110), a vertical pipe (120), a horizontal pipe (130), a footing (140), and a frame pipe (150) are placed and interconnected to complete a single structure.

The multifunctional buoyancy body (110) is configured to provide various functions at the lowest part of the structure as well as basic buoyancy, and includes a buoyancy body part (111), a lower protrusion part (113), a bottom protection plate part (114), an upper protrusion part (115), and a pipe separation prevention plate part (1116) as shown in FIGS. 6 and 7.

First, the buoyancy body part (111) has a buoyancy providing means built-in and corresponds to a basic body configuration provided in a block shape.

Here, the buoyancy body part (111) can be installed to provide floating properties by filling it with a buoyancy providing means such as EPS (Expanded polystyrene), and for this purpose, a separate opening for injection or recovery can be provided on one side, depending on the implementation.

In addition, it is preferable that the buoyancy body part (111) has a tapered shape in which the length in the forward/backward direction becomes shorter as it goes downward so that the length in the forward/backward direction of the lower surface is shorter than the length in the forward/backward direction of the upper surface as shown in FIGS. 3 and 5.

Due to this, the front and rear cross-sections of the buoyancy body (111) form an inclined slope (112), so that when the multifunctional buoyancy bodies (110) are connected in a row along the longitudinal direction of the front and rear and are arranged in a row as shown in FIGS. 1 and 2, the space with a triangular cross-sectional structure formed by each inclined plane between the rear cross-section of one multifunctional buoyancy body (110) and the front cross-section of another multifunctional buoyancy body (110) that is directly connected to it minimizes the influence of movement, bending, separation, collision, etc. caused by various water flows in the floating space, including waves, when floating.

In addition, the buoyancy body part (111) has at least one or more bolt assembly recesses (111H) recessed inwardly on each of the left and right sides as shown in FIGS. 5 and 6.

These at least one or more bolt assembly recesses (111H) not only provide sufficient working space when assembling bolts for fixed installation of a vertical pipe (120) to be placed in a pipe mounting groove (115H) to be described later, but also provide sufficient working space when assembling bolts for fixed installation of a bottom protection plate (114) covering the lower surface of the lower protrusion (113).

In this regard, at least one or more bolt assembly recesses (111H) can be modified in various ways to enable fixed connection through mutual coupling in addition to assembly using bolts when performing fixed installation of a vertical pipe (120) to be placed in a pipe mounting groove (115H) and a bottom protection plate (114) covering the lower surface of a lower protrusion (113), and provide a working space for a fixed installation method for such modified mutual connection.

Next, the lower protrusions (113) are formed as a pair by extending from the lower surface of the buoyancy body (111) so that the left and right width-wise end areas of the buoyancy body (111) protrude downward as shown in FIGS. 2 and 3.

Due to the structural features of this pair of lower protrusions (113), an upper recessed groove (113H) for providing rolling stability is formed between the two ends of the lower surface of the buoyancy body (111).

Specifically, the structural features of a pair of lower protrusions (113) enable a stable support structure to be formed while minimizing the area where the multifunctional buoyancy body (110) touches the floor, and at the same time, a recessed groove (113H) provided between a pair of lower protrusions (113) for providing rolling stability can be avoided (averted) and damped (damped) by rolling caused by the movement of water or an external force transmitted from the outside, thereby increasing the stability of the installation structure and significantly reducing the risk of damage.

In addition, the floor protection plate (114) is a structure that is provided in a plate shape as shown in FIGS. 2 and 3 and is fixedly connected to cover the lower surface of each of the pair of lower protrusions (113).

Here, the floor protection plate (114) is provided as a plate structure made of aluminum, stainless steel or iron depending on the implementation, and ultimately serves as a protective cover from a situation where the multifunctional buoyancy body (110) itself, including a pair of lower protrusions (113), may touch the floor.

Furthermore, the floor protection plate (114) is configured to have the center of gravity directed downwards of the multifunctional buoyancy body (110) to enable structurally more stable use and management.

Next, the upper protrusion (115) corresponds to a portion formed to extend upwardly from the upper surface of the buoyancy body (111) except for the two ends in the left and right width direction of the buoyancy body (111), as shown in FIGS. 6 and 7.

The structural feature of this upper protrusion (115) is that a pair of pipe mounting grooves (115H) are formed through a step at both ends of the left and right width directions of the buoyancy body (111).

As a result, a '┛'-shaped pipe mounting groove (115H) is formed on the right side based on the left-right width direction of the buoyancy body (111) due to the upper protrusion (115) as shown in FIG. 6, and a '┗'-shaped pipe mounting groove (115H) is formed on the left side based on the left-right width direction of the buoyancy body (111) due to the upper protrusion (115) as shown in FIG. 6.

Lastly, the pipe detachment prevention plate (116) is provided in a plate shape as shown in FIGS. 6 and 7, and at least one is installed on the upper surface of the upper protrusion (115), and the left and right widths are provided longer than the width of the upper protrusion (115) so as to be able to cover the upper surfaces of a plurality of vertical pipes (120) placed in the pipe mounting groove (115H).

Specifically, the pipe separation prevention plate (116) covers the upper surface of a plurality of vertical pipes (120) placed in the pipe mounting groove (115H), but protrudes to the left and right of the buoyancy body (111) so as not to protrude, thereby preventing the vertical pipes (120) from being separated upward.

Accordingly, the pipe detachment prevention plate (116) is composed of a central portion (116a) whose lower surface contacts the upper surface of the upper protrusion (115) and a side portion (116b) whose lower surface contacts the upper surface of the vertical pipe (120). Due to the side portion (116b), the width of the pipe detachment prevention plate (116) is made longer than the width of the upper protrusion (115), but it is desirable to have an appropriate width so as not to protrude further to the left and right than the vertical pipe (120) and the buoyancy body portion (111).

Multifunctional buoyancy bodies (110) with such configuration and structural features are arranged in a row in a number of places along the longitudinal direction of the front and rear to form a row in order to complete the floating structure (100) as shown in FIG. 4, and the formed rows are arranged so that they form at least one row along the left and right width directions.

Next, as shown in Fig. 4, a vertical pipe (120) provided as a rod-shaped structure is installed in a pair of pipe mounting grooves (115H) with the longitudinal direction facing the front-back direction based on each row of a plurality of multifunctional buoyancy bodies (110).

Next, as described above, the pipe detachment prevention plate (116) is installed on the upper surface of the upper protrusion (115) and is arranged to cover the upper surface of the vertical pipe (120) so as to form a predetermined distance between adjacent objects along the row.

Specifically, as illustrated in Fig. 7, the upper surface area of the upper protrusion (115) between adjacent pipe separation prevention plates (116) is used as a space (116H) provided through mutual separation, where a part of a horizontal pipe (130) to be described below can be placed.

Next, a horizontal pipe (130) provided as a rod-shaped structure is arranged so that the longitudinal direction faces left and right, as shown in Fig. 4, and a predetermined space is formed along a row of a plurality of multifunctional buoyancy bodies (110), and is installed on the upper surface of a plurality of vertical pipes (120) and the upper surface of the upper protrusion (115).

Specifically, as illustrated in FIG. 5, a predetermined separation space (130H) is formed between adjacent objects of horizontal pipes (130) arranged along a row of multifunctional buoyancy bodies (110), and a pipe separation prevention plate (116) is arranged in this separation space (130H) as described above.

Here, it is preferable that the pipe separation prevention plate (116) be arranged so that a gap is formed as a predetermined amount of free space (116T) on both sides in the longitudinal direction in some of the separation spaces (130H) provided between adjacent horizontal pipes (130) among a plurality of horizontal pipes (130), as shown in FIG. 5.

This is to secure a space (116T) provided as a gap between the pipe detachment prevention plate (116) and the horizontal pipe (130) to install various functional members, such as wire mesh, on the end side of the horizontal pipe (130) using an electro fusion system.

Furthermore, due to a predetermined amount of free space (116T) provided as a gap between the pipe detachment prevention plate (116) and the horizontal pipe (130), the connection between structures such as the vertical pipe (120) and the horizontal pipe (130) can be further strengthened and made stable.

According to the implementation, the horizontal pipe (130) can be prepared as a pipe made of aluminum material with a PE (polyethylene) coating.

Finally, after the installation of the vertical pipe (120) and the horizontal pipe (130), at least one foot plate (140) provided as a plate-shaped structure is installed on the upper surface of a plurality of horizontal pipes (130).

In addition, at least one frame pipe (150) provided as a rod-shaped structure is installed on the upper surface of a plurality of horizontal pipes (130) to form an outer frame by surrounding the entire structural boundary to which at least one foothold (140) is connected as shown in Fig. 1, thereby completing the floating structure (100).

The embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to explain it, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the rights of the present invention.

100 : Floating Structure
110: Multifunctional buoyancy body
111: Buoyancy body part 111H: Bolt assembly groove
112 : Slope 113 : Lower projection
114: Bottom protection plate 115: Upper protrusion
115H: Pipe mounting groove 116: Pipe detachment prevention plate
120 : vertical pipe 130 : horizontal pipe
140 : Footrest 150 : Frame Pipe

Claims (12)

A buoyancy body part having a built-in buoyancy providing means and provided in a block shape;
An upper protrusion formed so that an area excluding both ends of the left and right width direction of the buoyancy body part is extended upward from the upper surface of the buoyancy body part to form a pair of pipe mounting grooves through a step at both ends of the left and right width direction of the buoyancy body part; and
It includes a pipe detachment prevention plate portion which is provided in a plate shape and is installed on at least one upper surface of the upper protrusion, and whose left and right widths are longer than the width of the upper protrusion portion so as to cover the upper surface of the pipe placed in the pipe mounting groove;
The above buoyancy body part has a tapered shape in which the front and rear sections form an inclined surface so that the front and rear sections have a shorter front and rear length than the front and rear length of the upper surface.
The above buoyancy body part is characterized by having at least one or more bolt assembly recesses recessed inwardly on each of the left and right sides.
Multifunctional buoyancy body.
delete delete In the first paragraph,
The above multifunctional buoyancy body is,
It is characterized in that it further includes a pair of lower protrusions formed so that the left and right end areas of the buoyancy body part are extended downwardly from the lower surface of the buoyancy body part to form a recessed groove for providing rolling safety that is recessed upwardly between the two ends.
Multifunctional buoyancy body.
In paragraph 4,
The above multifunctional buoyancy body is,
It is characterized by further including a bottom protection plate portion which is provided in a plate shape and fixedly connected to cover the lower surface of each of the pair of lower protrusions.
Multifunctional buoyancy body.
A buoyancy body part having a built-in buoyancy providing means and formed in a block shape; and an upper protrusion part formed so as to protrude from an upper surface of the buoyancy body part except for both ends of the buoyancy body part in the left and right width direction, thereby forming a pair of pipe mounting grooves through a step at both ends of the buoyancy body part in the left and right width direction; a plurality of multifunctional buoyancy bodies arranged in a row along the longitudinal direction of the front and rear to form a row, and the formed rows being arranged to form at least one row along the left and right width direction;
A rod-shaped structure, wherein a plurality of vertical pipes are installed and secured in each of a pair of pipe securing grooves based on each row of the plurality of multifunctional buoyancy bodies, with the longitudinal direction facing forward and backward;
A rod-shaped structure, wherein a plurality of horizontal pipes are arranged so as to form a predetermined space along a row in which a plurality of multifunctional buoyancy bodies are connected, with the longitudinal direction facing left and right, and are installed on the upper surfaces of the plurality of vertical pipes and the upper surfaces of the upper protrusions;
As a plate-shaped structure, at least one footplate installed on the upper surface of a plurality of said horizontal pipes; and
As a rod-shaped structure, it comprises at least one frame pipe installed on the upper surface of a plurality of said transverse pipes to form an outer frame by surrounding the entire structural perimeter to which at least one or more of said footings are connected;
The above buoyancy body part has a tapered shape in which the front and rear sections form an inclined surface so that the front and rear lengths of the lower surface are shorter than the front and rear lengths of the upper surface.
The above buoyancy body part is characterized by having at least one or more bolt assembly recesses recessed inwardly on each of the left and right sides.
Floating structure using multifunctional buoyancy body.
In Article 6,
The above multifunctional buoyancy body is,
It is characterized by further including a pipe detachment prevention plate portion which is provided in a plate shape and at least one is installed on the upper surface of the upper protrusion, and the left and right widths are provided longer than the width of the upper protrusion portion so as to be able to cover the upper surfaces of a plurality of vertical pipes placed in the pipe mounting groove.
Floating structure using multifunctional buoyancy body.
In Article 7,
The above pipe separation prevention plate is characterized in that it is arranged so that a gap is formed as a predetermined amount of free space on both sides in the longitudinal direction in some of the space provided between adjacent horizontal pipes among the plurality of horizontal pipes.
Floating structure using multifunctional buoyancy body.
delete delete In Article 6,
The above multifunctional buoyancy body is,
It is characterized in that it further includes a pair of lower protrusions formed so that the left and right end areas of the buoyancy body part are extended downwardly from the lower surface of the buoyancy body part to form a recessed groove for providing rolling safety that is recessed upwardly between the two ends.
Floating structure using multifunctional buoyancy body.
In Article 11,
The above multifunctional buoyancy body is,
It is characterized by further including a bottom protection plate portion which is provided in a plate shape and fixedly connected to cover the lower surface of each of the pair of lower protrusions.
Floating structure using multifunctional buoyancy body.