KR200372879Y1 - Steel Artificial Reef with Excellent Structural Stability - Google Patents

Abstract

The present invention is a forced reef that is installed in the sea for the creation of aquatic resources, the forced reef (100) of the present invention, by joining a plurality of horizontal members to form a polygonal border, radially from the center of the polygonal shape toward the border A lower end 110 and an upper end 120 each having a plurality of beam members 112 and 122 arranged to be fixed at both ends thereof; A connecting portion 130 connecting the lower portion and the upper portion to each other with a vertical gap therebetween; And a connecting column 140 connecting the centers of the lower and upper ends to each other vertically. Therefore, the present invention has a mutually symmetrical structure with the connecting column as the central axis irrespective of the lower floor or the higher floor, and the structural members are structurally stable because the beam members are radially arranged based on the connecting column.

Description

Steel Artificial Reef with Excellent Structural Stability

The present invention relates to a forced reef installed in the ocean for the creation of aquatic resources, and in particular, forms a mutually symmetrical structure based on the central axis to have structural stability regardless of the lower or higher floors, and based on the central axis without the need for a separate work support It relates to a forced reef having a structural stability that is sequentially coupled from the top to the bottom.

In general, artificial reefs are artificial structures that are installed on the coast or near the sea in order to secure marine resources for coastal fishing grounds, to create spawning and habitat for marine life, and to provide shelter for fry. Artificial reefs are transformed into various forms, from sinking the first abandoned ships or dropping ground structures into the sea to create habitats, and those designed into hexahedral, cylindrical, and uneven structures to create more efficient habitats. Has been. There is also a variety of materials used to make artificial reefs, such as concrete, waste tires, and steel.

However, in the case of concrete reefs, the structural stability is excellent, but considering the weight, etc., it is not suitable for manufacturing high-rise reefs, and its structure is inevitably manufactured in a hemispherical shape or a box shape. In addition, the phenomena are causing pollution to the sea. In the case of the reefs using waste tires, only the aspect of recycling is considered, and the shape itself is difficult to be deformed, which does not satisfy the proper function of the reefs. Therefore, it is possible to form a complex internal space, which is relatively lighter than concrete, and a lot of forced reefs that provide a structure suitable for fish breeding are being manufactured as well as researches on it.

Figure 1a and Figure 1b is a schematic diagram showing the shape of the low-rise forced reef, respectively, according to the prior art, Figure 1a shows a box-type low-layer forced reef, Figure 1b shows a two-stage box-type low-rise forced reef.

As shown in FIGS. 1A and 1B, the conventional low-layered steel reef is mainly a simple rectangular structure, and is manufactured to have a similar symmetry with respect to a virtual central axis line. That is, the conventional low-layered forced reef has no structural central axis and thus has difficulty in manufacturing a symmetrical structure with respect to the virtual central axis, resulting in poor structural stability. And even if the low-rise forced reefs, such as Figure 1a and 1b because the height reaches a few meters, there is a hassle to manufacture in the state of laying a separate working support for the work of workers.

Figure 2a to 2c is a schematic diagram showing the shape of a high-rise forced reef, respectively, according to the prior art, Figure 2a shows a high-rise forced reef described in the Republic of Korea Utility Model Registration No. 317824, Figure 2b is Japan Fig. 2C shows a high-rise forced reef described in Japanese Patent Application Laid-Open No. 8-289695.

As shown in Figures 2a to 2c, the conventional high-rise forced reef is configured to form a lower layer to have a large area, and the size becomes smaller gradually toward the top. However, the conventional high-rise forced reef also has a structural central axis, and accordingly, it is difficult to manufacture a symmetrical structure with respect to the virtual central axis, resulting in poor structural stability. In particular, in the case of high-rise forced reefs, such as Figures 2b and 2c is configured differently from other parts, such as opening some space for the use of a crane, the structural stability is further lowered because it does not have a symmetrical structure based on the virtual central axis There is this.

Since the high-rise steel reefs of FIGS. 2A to 2C have high heights, the high-rise forced reefs of the high-rise steel reefs are manufactured by dividing each of the heights and stacking them by using a crane. However, even if divided by height, the height of the forced reefs by height reaches a few meters, there is a hassle to produce with a separate working support for the work of workers.

Therefore, the present invention has been devised to solve the problems of the prior art as described above, and the object of the present invention is to provide a forced reef having structural stability by forming a mutually symmetrical structure with respect to the central axis regardless of low or high floors. have.

1A and 1B are schematic diagrams each showing a shape of a low-layer forced reef in accordance with the prior art,

2a to 2c are schematic views showing the shape of a high-rise forced reef in accordance with the prior art, respectively,

3 to 5 is a conceptual diagram showing the form of the forced reef to which the concept of the present invention is applied, respectively,

6 is a perspective view showing the shape of a square pyramid-shaped forced reef having structural stability according to the first embodiment of the present invention,

7 is a perspective view showing the shape of a hexahedral forced reef having structural stability according to a second embodiment of the present invention,

8 is a perspective view showing the shape of the combined forced reef having a structural stability according to a third embodiment of the present invention,

9 and 10 are perspective views showing the shape of the high-rise forced reef having structural stability according to the fourth and fifth embodiments of the present invention,

FIG. 11 is a manufacturing diagram illustrating a manufacturing process of the combined type forced reef shown in FIG. 8.

♠ Explanation of symbols on the main parts of the drawing ♠

100: square pyramid forced reef 110: lower portion

111: first horizontal member 112: beam member

113: second horizontal member 114: connecting member

120: upper portion 121: horizontal member

122: beam member 123: connecting member

130: connection portion 131: vertical member

132: inclined member 133: grid member

140: connecting column

Forced reef of the present invention for achieving the above object, a plurality of horizontal members are bonded to each other to form a border of a polygonal shape, a plurality of beam members are arranged radially toward the border on the center of the polygonal shape is fixed at both ends, respectively A plurality of base portions each including; One or more connection parts connecting the base parts to one another at vertical intervals; And it characterized in that it comprises a connecting column for connecting the center of the base portion to each other vertically.

Hereinafter, the shape of the forced reef applying the concept of the present invention will be described with reference to FIGS.

3 to 5 are conceptual views showing the form of the forced reef to which the concept of the present invention is applied, respectively. Figure 3 is a square pyramid shape (a) having each column on the central axis (a), a square pillar shape (b), and having a column on the central axis, but the form of a combination of square pyramids (c) on top of the square pillar respectively It is shown. And Figure 4 is a hexagonal pyramid shape (a) having each column on the central axis (a), regular hexagonal form (b), and having a column on the central axis of the hexagonal shape of the combined hexagonal pyramid (c) on top of the hexagonal pillar Each is shown.

3 and 4 (a) in the form of a polygonal pyramidal forced reef is arranged a pole of the central axis from the bottom center point of the polygonal shape to the vertex of the polygonal pyramid, and the beam members are radially connected to each other in the horizontal plane of the bottom around this column It is completed by. Such polypyramid-shaped steel reefs not only have structural stability because they have mutually symmetrical structures with respect to the central axis column, but also have sharp effects on fishing nets because of sharp tips.

3 and 4 (b), the forced reefs of the polygonal columnar form a column of the central axis from the bottom center point of the polygonal shape to the top center point of the polygonal shape, and the beam members in the horizontal plane are radially Complete by connecting. These polygonal reinforcement reefs have structural stability because they have mutually symmetrical structures with respect to the central axis column. In addition, it is more effective in terms of strength by installing a central axis column and increasing the strength of the beam member as the beam member is arranged radially about the column. In addition, considering that it is necessary to secure the strength of the forced reefs as the height of the forced reefs increases, it is very important to install the central axis pillar and to arrange the beam members radially.

3 and 4 (c) shows a two-stage forced reef combined with each other in the form of a polygonal pyramid and a polygonal pillar, each of the central axis pillars are bonded to each other or in the same manner as described above to have one central axis By manufacturing, a two-stage forced reef having a polygonal pyramid at the top of the polygonal column can be completed. These two-stage forced reefs have structural stability because they have mutually symmetrical structures with respect to the central axis column. In addition, the two-stage forced reef is wider at the lower end and narrower at the upper end. As a result, the center of gravity of the reef can be lowered to further secure stability against slippage and fallover. There is a significant reduction effect.

FIG. 5 shows a forced reef having a square pyramid shape (a) having respective pillars on a central axis (a), a square pillar shape (b), and a form (c) having a pillar on the central axis but combining a square pyramid on the top of the square pillar. It is shown. The forced reefs as shown in Fig. 5 are manufactured in the same manner as in Figs. 3 and 4, and the two-stage forced reefs as shown in Fig. 5 (c) are structurally stable and catching like the forced reefs of Fig. 4 (c). Not only is there a feature to be reduced, it is possible to implement a variety of forced reefs of a multi-layer structure using a square pillar and a square pyramid.

In FIGS. 3 to 5, the concept of the present invention is explained by using a square pyramid, a square pillar or a hexagonal pyramid, and a hexagonal pillar as an example, but the present invention is not limited thereto, and an equilateral triangular pyramid, an equilateral pyramid, and a regular pyramid constituting a polygonal pyramid are illustrated in FIG. And it can be applied to the regular octagonal pyramid, etc., and also can be applied to the equilateral triangular prism, octagonal prismatic pillar, regular chisel octagonal pillar, and octagonal prismatic pillar constituting the polygonal pillar.

Hereinafter will be described in detail with reference to the accompanying drawings, a preferred embodiment of a forced reef having a structural stability and a manufacturing method according to the present invention applying the above concept.

6 is a perspective view showing the shape of a square pyramid-shaped forced reef having structural stability according to the first embodiment of the present invention. As shown in FIG. 6, the square pyramid-shaped forced reef 100 of the present invention has a lower end portion 110 having a rectangular shape of a predetermined size, and an upper end portion 120 having a rectangular shape having a relatively smaller size than the lower end portion 110. ), The lower end 110 and the upper end 120 is connected to each other at a predetermined vertical interval and connecting portion 130, and the lower end 110 and the connecting column 140 for connecting the center of the upper end 120 with each other. . At this time, the lower end 110 and the upper end 120 serves as a base.

The lower end 110 forms a rectangular frame by welding a plurality of first horizontal members 111 having a predetermined length in a rectangular shape, and both ends thereof are arranged radially from the center of the space formed by the rectangular frame toward the edge. It includes a plurality of beam members 112, each fixed. At this time, the connection member 114 having a hole having a size that can be inserted into the connection pillar 140 is formed in the center of the rectangular border, that is, one end of the beam member 112 is collected. Accordingly, the plurality of beam members 112 have one end fixed to each other along the circumference of the connecting member 114, and the other end is fixed to the first horizontal member 111 constituting a radial edge. At this time, the other end of the beam member 112 is fixed to the corner of the rectangular border and the longitudinal center of the first horizontal member 111, respectively. Therefore, the lower end 110 has eight beam members connecting the corners of the four horizontal members 111 and the center of the four first horizontal members 111 and the connecting member 114 to each other, the first horizontal member 111 is bonded to each other. 112 is used. However, the number of the beam member 112 in the lower end 110 does not have a great meaning and can be configured by varying the number as necessary.

In addition, the lower end portion 110 further includes a plurality of second horizontal members 113 that form an inner rectangular frame by connecting the eight beam members 112 to each other in a horizontal direction. Accordingly, the lower end 110 has two rectangular edges having different sizes based on the connecting member 114 as the center, and the corners of these rectangular edges and the center of the horizontal members 111 and 113 and the connecting member 114. It will have a stable structure to radially connect to the beam member (112). At this time, the inner rectangular frame may be further configured through other horizontal members connecting the eight beam members 112 to each other in the horizontal direction.

The horizontal members 111 and 113 and the beam members 112 constituting the lower end 110 are preferably structurally stable, easy to bond, and use H-type steel having excellent strength.

The upper end 120 is configured in the same form as the lower end 110 is configured as described above, except that the size of the upper end 120 does not constitute an inner rectangular border. That is, the upper end portion 120 includes a plurality of horizontal members 121 each having a rectangular edge, a corner of the rectangular edge where the horizontal members 121 are bonded to each other, and a center of the horizontal member 121 and the connection pillar 140. It consists of a plurality of beam members 122 radially connecting the connecting member 123 having a hole that can be inserted. Therefore, the upper end 120 has structural stability. At this time, it is preferable to configure the rectangular border of the upper end 120 and the inner rectangular border of the lower end 110 to have the same size.

In addition, the horizontal member 121 and the beam member 122 constituting the upper end 120 is preferably structurally stable, easy to bond and use the H-shaped steel excellent in strength. In addition, the upper end portion 120 may further include a plurality of other horizontal members constituting the inner rectangular border by connecting the plurality of beam members 122 in the horizontal direction.

The connecting portion 130 is to connect the lower end 110 and the upper end 120 with a predetermined vertical interval, and the vertical member 131 and the lower end 110 for vertically connecting the lower end 110 and the upper end 120. And the inclined member 132 connecting the upper end portion 120 inclinedly, and the grid member 133 connecting the vertical member 131 and the upper and lower end portions 120 and 110 adjacent to each other between the vertical members 131. do.

At this time, the vertical member 131 is the center of the corner of the square and the horizontal member 121 of the upper end 120 and the center of the inner rectangular border of the lower end 110 and the center of the second horizontal member 113 to each other. Connect vertically. Therefore, eight vertical members 131 are used for the connecting portion 130. And the inclined member 132 is the center of the corner and the horizontal member 121 of the rectangular border of the upper end 120, the center and both sides of the corner of the outer rectangular border of the lower end 110 and the first horizontal member 111. Connect obliquely to each other. Therefore, sixteen inclined members 132 are used for the connecting portion 130. However, the number of the vertical member 131 and the inclined member 132 in the connecting portion 130 does not have a great meaning and can be configured by varying the number as necessary.

The vertical member 131 uses a circular pipe with a small load (fluid force) and hardly disturbs the flow of algae, the inclined member 132 uses an H-shaped steel for structural stability, and the grid member 133 ), It is preferable to use a square pipe to enable a smooth coupling between each other.

The connecting column 140 connects the centers of the lower end 110 and the upper end 120 to each other, and is vertically vertically perpendicular to the holes of the connecting member 123 formed at the centers of the lower end 110 and the upper end 120, respectively. Inserted and welded together. Therefore, the connecting column 140 serves as a central axis of the square pyramid-shaped forced reef 100 of the present invention. At this time, the connecting column 140 is preferably composed of a circular pipe or a solid cylinder that has a small load (fluid force) and hardly disturbs the flow of algae.

Square pyramid-shaped forced reef 100 of the present invention has a symmetrical structure of each component with a central axis of the connecting column 140. In addition, the forced reef 100 of the present invention is a central axis of the connecting column 140, the beam member 112, 122 of the lower end 110 and the upper end 120 on the basis of the connection column 140 in a radial The array is composed. Therefore, the forced reef 100 of the present invention has a structural stability.

7 is a perspective view showing the shape of a hexahedral forced reef having structural stability according to a second embodiment of the present invention. As shown in Figure 7, the hexahedral forced reef 200 of the present invention is the lower end 210 and the upper end 220 is configured in the same form, except that the connection 230 is configured differently It is the same as the square pyramid forced reef 100 of the embodiment. Therefore, the description of the same components will be omitted here.

The hexahedral forced reef 200 of the present invention has a lower end 210 and an upper end 220 in the same shape. Accordingly, the connection part 230 includes first and second vertical members 231 and 232 that vertically connect the outer and inner rectangular edges of the lower end 210 and the upper end 220, respectively, and the first and second vertical members 231. And first and second grating members 233 and 234 connecting adjacent first and second vertical members 231 and 232 and upper and lower ends 220 and 210 to each other. The first vertical member 231 vertically connects the corners of the outer rectangular edges of the upper and lower ends 220 and 210 and the centers of the first horizontal members 221 and 211 to each other, and the second vertical member 232 is upper and lower. The corners of the inner rectangular edges of the lower ends 220 and 210 and the centers of the second horizontal members 223 and 213 are vertically connected to each other.

Therefore, the hexahedral forced reef 200 of the present invention has each component having a symmetrical structure with respect to the connecting column 240 as a central axis. In addition, the forced reef 200 of the present invention is a central axis of the connection column 240, the beam member (212, 222) of the lower end 210 and the upper end 220 on the basis of the connection column 240 is radial The array is composed. Therefore, the forced reef 100 of the present invention has a structural stability.

8 is a perspective view showing the shape of the combined type forced reef having structural stability according to the third embodiment of the present invention. As shown in FIG. 8, the combination type forced reef 300 of the present invention is configured in the form of a single-stage sandwich in which a hexahedral forced reef 200 is arranged between the square pyramidal forced reefs 100 and 100A having different sizes. . At this time, the square pyramid-forced reef 100 is configured in the same manner as the first reef, the other square pyramid-forced reef 100A is configured in the same concept as the forced reef 100 of the first embodiment, but the size is increased According to the configuration is added some components. And the hexahedral forced reef 200 is configured in the same manner as the fish reef of the second embodiment.

Combination type forced reef (300) of the present invention is formed in the form of a sandwich form that is arranged hexahedral forced reef (200) between the square pyramid-shaped forced reef (100, 100A) square borders are formed in the upper and lower ends respectively contact with each other up and down Has a structure. However, the combination type forced reef 300 of the present invention may be configured such that the upper and lower ends are contacted by one rectangular edge by removing one of the rectangular edges which are in contact with the upper and lower sides. In addition, the combination type forced reef 300 of the present invention may be configured by welding and joining the connecting columns 340 constituting each of the forced reefs 100, 100A, and 200, in consideration of constructability including structural stability. Even better looking.

9 is a perspective view showing the shape of a high-rise forced reef having structural stability according to a fourth embodiment of the present invention. As shown in Figure 9, the high-rise forced reef 400 of the present invention sequentially hexahedral type forced reef (200A) and square pyramid-shaped forced reef (100B) on the top of the combination type forced reef 300 is configured as shown in FIG. It is made by stacking further. Therefore, the high-rise forced reef 400 of the present invention has a square pyramid-shaped forced reef at the bottom and top, respectively, and has a two-stage sandwich form in which hexahedral forced reefs and other square pyramid-shaped forced reefs are sequentially positioned.

At this time, the hexahedral forced reef (200A) is configured in the same concept as the forced reef (200) of the second embodiment, but is configured in such a way that some components are removed as the size is reduced. In addition, the square pyramid-type forced reef (100B) is configured in the same concept as the forced reef (100) of the first embodiment, but is configured in a form that some components are removed as the size is reduced.

The high-rise forced reef 400 of the present invention has a structure in which square edges respectively formed on the upper and lower ends thereof are in contact with each other up and down like the combined type forced reef 300 of the third embodiment. However, the high-rise forced reef 400 of the present invention may be configured such that the upper and lower ends are in contact by one of the rectangular borders by removing any one of the rectangular borders that are in contact with the vertical. And high-rise forced reef (400) of the present invention may be configured by welding and joining the connecting column (440) constituting each of the forced reef (100B, 200A, 300) in consideration of the construction properties including the structural stability of one Even better looking.

10 is a perspective view showing the shape of a high-rise forced reef having structural stability according to a fifth embodiment of the present invention. As shown in FIG. 10, the high-rise forced reef 500 of the present invention is sequentially stacked a plurality of hexahedral forced reefs 200A located at the upper end of the high-rise forced reef 400 as shown in FIG. Square pyramid-shaped forced reef (100B) is formed by stacking. Therefore, the high-rise forced reef 500 of the present invention is located at the bottom and top of the square pyramid-shaped forced reef, respectively, a plurality of hexahedral forced reef and one square pyramid-shaped forced reef is located between the two stages long It has a sandwich form.

The high-rise forced reef 500 of the present invention has a structure in which square edges respectively formed on the upper and lower ends thereof contact each other up and down like the forced reef 400 of the fourth embodiment. However, the high-rise forced reef 500 of the present invention may be configured such that the upper and lower ends are in contact by one of the rectangular borders by removing any one of the rectangular borders facing up and down. In addition, the high-rise forced reef 500 of the present invention may be configured by welding joints 540 constituting each of the forced reefs, but it is more preferable to consider the construction properties including structural stability.

As described above, the present invention can be made in various ways to the forced reef of the desired height with the basic configuration of the square pyramid-shaped forced reef 100 shown in Figure 6 and the hexahedral forced reef 200 shown in Figure 7 as a basic configuration.

Hereinafter, the manufacturing method of the forced reef having structural stability of the present invention configured as described above will be described.

FIG. 11 is a process diagram illustrating a manufacturing process of the combined type forced reef shown in FIG. 8. As shown in Figure 8 and 11, first, the square pyramid-shaped forced reef (100A, 100) and the top portion (120A, 120, 220) constituting a portion of the hexahedral forced reef 200 and the square pyramid located at the bottom The lower end portion 110A of the large forced reef 100A is manufactured in the form as shown in FIGS. 6 and 7, respectively. Then, the upper portion 220 constituting the hexahedral forced reef 200 between the upper portion (120A, 120) constituting the square pyramid-shaped forced reef (100A, 100) in a state where the lower portion (110A) is located at the bottom To be placed. And each of the upper end portion (120A, 220, 120) by inserting the connecting column 340 corresponding to the height to be manufactured in the hole of the connecting member of the lower end portion (110A) and each upper end portion (120A, 220, 120) from the top to the bottom Vertically fixed to the lower end (110A) (Fig. 11 (a)).

Then, the upper end 120 constituting the square pyramid-shaped forced reef 100, which is located at the top of the crane, is lifted by the height of the connecting portion 130 along the connecting column 340. And in this state, the square pyramid-shaped forced reef. Square top pyramid forced reef (100) by connecting the upper end portion 120 and the upper end portion 220 constituting the hexahedron type forced reef 200 with each of the components of the connection portion 130 is configured as shown in FIG. ) To form (Fig. 11 (b)). At this time, the upper end portion 220 of the hexahedral forced reef 200 serves as the lower end of the square pyramid-type forced reef 100.

In this way, when manufactured in the form of a square pyramid-forced reef 100, the crane is operated again to lift the height of the connection portion 230 of the hexahedral forced reef 200 along the connecting column 340. In this state, the upper end portion 220A of the hexahedral forced reef 200 and the upper end portion 120A constituting the square pyramid-shaped forced reef 100A are connected to each other by the components of the connecting portion 230 configured as shown in FIG. 7. By joining, it is produced in the form of a hexahedral forced reef 200 (Fig. 11 (c)). At this time, the upper end portion 120A of the square pyramid-type forced reef 100A serves as a lower end portion of the hexahedral forced reef 200.

In this way, when manufactured in a two-stage form, the crane is operated again and lifted by the height of the connecting portion 130A of the square pyramid-shaped forced reef 100A along the connecting column 340. In this state, the upper end portion 120A and the lower end portion 110A of the square pyramid-shaped forced reef 100A are connected to each other by the components of the connecting portion 130A, thereby manufacturing in the form of a square pyramid-shaped forced reef 100A [Fig. 11 (d)].

When the stacking operation is completed through this process, the welding portion of each connection portion and the connection column 340 in the lifted state by the crane and the separation of the crane to complete the production of the combined type forced reef 300 of the present invention (Fig. 11) (e)].

As described above, the present invention uses the square pyramid-shaped forced reef 100 and the hexahedral forced reef 200 shown in FIGS. 6 and 7 in the same manner as the manufacturing principle of the combined type forced reef 300 shown in FIG. In addition, the high-rise forced reefs 400 and 500 shown in FIGS. 9 and 10 may be manufactured. However, in the case of the high-rise forced reef (400, 500) as shown in Figures 9 and 10, the combined forced reef (300) and other forced reefs stacked on top of each other are manufactured in the same manner as in Fig. It may be.

As described in detail above, the present invention has a mutually symmetrical structure with respect to the connecting column as a central axis irrespective of a low floor or a high floor, and has structural stability because the beam members are arranged radially based on the connecting column.

In addition, the present invention has the effect of improving the workability by sequentially joining from the top to the bottom to the center of the connecting pillar without the need for a separate work support regardless of low or high floor.

In the above description of the technical details for the forced reef having a structural stability of the present invention with the accompanying drawings, but this is only illustrative of the best embodiment of the present invention is not intended to limit the present invention.

It is also apparent that any person skilled in the art can make various modifications and imitations within the scope of the appended claims without departing from the scope of the technical idea of the present invention.

Claims (9)

It is a forced reef that is installed in the sea to create aquatic resources. Joining a plurality of horizontal members to each other to form a border of a polygonal shape, a plurality of base portions each comprising a plurality of beam members are arranged radially on the border of the center of the polygonal shape is fixed at both ends; One or more connection parts connecting the base parts to one another at vertical intervals; And Forced reef having a structural stability, characterized in that it comprises a connecting column for connecting the center of the base vertically vertically. The method of claim 1, wherein the plurality of base portion is composed of two rectangular shape of the same size, respectively, the forced reef having structural stability, characterized in that to form a hexahedral form by connecting up and down to the connecting portion. According to claim 1, Comprising the structural stability characterized in that the plurality of base portion is composed of two rectangular shape of different sizes, respectively, to form a square pyramid by connecting up and down to the connecting portion. According to claim 2 or 3, Forced reef having a structural stability, characterized in that the connection member having a hole of the size that can be inserted into the connection column is further formed in the center of the base portion. The method of claim 4, wherein one end of the beam member is joined along the circumference of the connecting member, and the other end of the beam member is joined to the corner where the horizontal members are joined to each other and the longitudinal center of the horizontal member, respectively. Forced reef with structural stability characterized by the above. 6. The forced reef with structural stability according to claim 5, wherein the base portion further comprises a plurality of horizontal members which connect the plurality of beam members to each other in a horizontal direction to form one or more inner rectangular edges. According to claim 1, Polygonal pyramidal structure and the base portion constituting the upper end of the polygonal pyramidal structure and the upper portion of the polygonal pyramidal structure by connecting the two base parts of the polygonal shape of different sizes up and down with the connecting portion A polyhedral structure constituting the interruption by vertically connecting the base portion with the connecting portion, and another polygonal pyramid configured to connect the base portion with a size smaller than the base portion constituting the upper end of the polyhedral structure with the connecting portion to form an upper end. To form large structures, Forced reinforcement having a structural stability, characterized in that the connecting column is connected to each other vertically vertically the center of the base portion of the structure. According to claim 7, Another polyhedral structure configured by connecting the base portion having the same size as the base portion constituting the upper end of the other polygonal pyramid structure with the connecting portion and the top of the other polyhedral structure Forced to have a structural stability characterized in that it further forms another polygonal pyramidal structure constituting the upper end by connecting the base portion having a smaller size than the base portion to the connecting portion up and down. According to claim 7, Other polyhedral structure having a plurality of the base portion having the same size as the base portion constituting the upper end of the other polygonal pyramid structure by sequentially connecting up and down to a plurality of the connecting portion, and the other Forced structure having a structural stability, characterized in that to further form another polygonal pyramidal structure constituting the top by connecting the base portion having a smaller size than the base portion constituting the top of the polyhedral structure to the connecting portion.