KR101099448B1 - A floating pier structure using a floating pipe - Google Patents

Abstract

The present invention relates to a prefabricated offshore structure used for floating bridges, floating docks, yacht moorings, etc. by forming a constant moving path or space portion on the surface of the sea or river or lake while being assembled and installed in the vicinity of the sea or river. Is a rectangular plate shape placed vertically, a plurality of pipe mounting plates in which the plurality of pipe through-holes formed on one side are drilled at regular intervals in the front and rear direction, and the front and rear sides are blocked and the inside is closed. Cylindrical pipes are designed to have a certain flotation force in the water, and each of the plurality of pipe through-holes formed in the plurality of pipe mounting plates penetrates in a straight line in the front and rear horizontal directions to be inserted and fixed to connect the plurality of pipe mounting plates. The key block corresponding to the key groove is in a straight line The key block has a mounting plate fixing grooves are formed at regular intervals so that the pipe mounting plate is engaged between the key blocks while being rotated while the pipe mounting plates are positioned in the respective mounting plate fixing grooves. A buoyancy pipe, a separation prevention device for preventing each buoyant pipe from being separated from the pipe mounting plate while being fastened to fit each of the empty key grooves of the pipe mounting plate according to the rotational installation of each of the support pipes, and the plurality of pipes A support pipe, comprising: a base beam having a plurality of base beams assembled side by side in a lateral direction along an upper surface of the mounting plate; and a top plate structure which is installed on the upper surface of the plurality of base beams to form a moving path or a space floating on the water surface. The present invention relates to a prefabricated subzan bridge structure.

Pipe mounting plate, pipe through hole, flotation pipe, keyway, key block, release prevention, base beam, top plate structure

Description

Prefabricated floating bridge structure using floating pipe {A floating pier structure using a floating pipe}

The present invention is installed in the sea or river or lake near the coast or body of water while forming a constant moving path or space portion on the surface used as a floating bridge (floating dock, floating dock, yacht marina, etc.) Regarding the prefabricated offshore structure), more specifically, it is a rectangular plate shape placed vertically, in which a plurality of pipes are positioned side by side at a predetermined interval in the front and rear direction, and a plurality of pipe through-holes formed at one side with a key groove are drilled at a predetermined interval. It is a cylindrical pipe with a mounting plate and both sides closed and sealed inside to have a certain flotation force in the water, and each of the pipe through-holes formed in the pipe mounting plate penetrates in a straight line in the front and rear horizontal directions. While fixing a plurality of pipe mounting plate to one side in the key groove The combined key blocks are formed to protrude in a straight line, and the key blocks are provided with mounting plate fixing grooves at predetermined intervals so that the pipe mounting plates are rotated while the pipe mounting plates are respectively positioned in the mounting plate fixing grooves. The buoyant pipes are to be fastened to each other between the blocks and the buoyant pipes are fitted to match the empty key grooves of the pipe mounting plates according to the rotational installation of the respective support pipes, thereby preventing each flotation pipe from being separated from the pipe mounting plate. A release structure, a base beam having a plurality of assembled side by side in the left and right direction along the plurality of pipe mounting plates, and an upper plate structure which is installed on the upper surface of the plurality of base beams to form a moving path or a space floating on the surface of the water; Prefabricated Buzan using flotation pipe, characterized in that configured It relates to the structure.

In general, a busan bridge structure is installed in order to form a constant moving path or space part in a coastal area or water body of a sea, a river, or a lake. The busan bridge structure is a floating bridge, a floating dock, or a yacht. It is used for mooring and pier docks.

As a conventional technology that is installed by using the pipe floating on the water surface of the above-mentioned sub-zan bridge structure, both ends of the floating pipe in the prefabricated structure using the cover on the floating pipe of the Republic of Korea Utility Model Publication No. 20-1999-0033349 The parts are buoyant and buoyant and the upper and lower lids are bolted up and down while the floating pipes are positioned between the pair of upper and lower lids, and the floating pipes are fixed by the upper and lower lids, respectively. The pair of the top cover is connected in a row, and the top plate of the top plate is assembled to the upper plate strass is formed to form a moving path in the water to form a technique for forming a prefabricated structure used as a cage facility, etc. It became.

However, the conventional prefabricated structure has a structure in which a floating pipe is simply interposed between a semicircular upper cover and a lower cover, and the floating pipe is fixed while the upper cover and the lower cover are bolted up and down, so that the floating pipe can be fixed in the water for a long time. The upper and lower lids positioned are easily damaged or corroded by continuous waves and strong winds, so that the upper and lower lids are separated, so that the floating pipes cannot be fixed firmly, and also due to the waves and the winds applied to the floating pipes. The floating pipe is easily flowed back and forth between the upper and lower lids to prevent it from being firmly fixed, and both ends of the floating pipe are easily separated from the upper and lower lids, so that the durability, strength and floating force of the assembled structure are greatly increased. There was a problem of deterioration.

The present invention is to solve the problems as described above, the buoyant pipe is inserted through the horizontal direction in each of the plurality of pipe mounting plate through which the plurality of pipe through holes are perforated to be supported on the water surface, but in the key groove of the pipe through hole The pipe mounting plate is simply and firmly assembled between the key blocks while the buoyant pipe is rotated and installed while the pipe mounting plates are respectively positioned in the mounting plate fixing grooves formed in the key blocks at predetermined intervals while the key blocks of the support pipes are matched. The flotation pipe does not swing in the front and rear direction of the pipe mounting plate and escapes from the pipe mounting plate even when strong waves or storms are continuously applied to the floating pipe and the pipe mounting plate positioned in the water for a long time. In addition, the lower end of each pipe mounting plate As for the other pipe mounting plate is attached to the upper and lower connection additionally support the pipe is to occur to facilitate the control of the flotation in accordance with the floating condition is interposed inserted through it is an object.

In order to achieve this purpose, a rectangular plate is placed vertically, and a plurality of pipe mounting plates in which the plurality of pipe through-holes are formed at regular intervals in the front and rear directions are arranged side by side at a predetermined interval, and both front and rear sides are It is a cylindrical pipe sealed inside to have a certain flotation force in the water, and each of the plurality of pipe through holes formed in the plurality of pipe mounting plates penetrates in a straight line in the front and rear horizontal direction and is interposed. The connection block is fixed, but on one side, the key block corresponding to the key groove is formed to protrude in a straight line, and the key block has mounting plate fixing grooves formed at regular intervals, so that the pipe mounting plate is located in each of the mounting plate fixing grooves. The pipe mounting plate every key block A flotation pipe which is to be fastened and a release prevention device for preventing each flotation pipe from escaping from the pipe mounting plate while being fitted in accordance with the empty key groove of each pipe mounting plate according to the rotational installation of the support pipe. And a base beam having a plurality of base beams assembled side by side along the plurality of pipe mounting plate top surfaces, and a top structure which is assembled to the plurality of base beam upper surfaces to form a moving path or a space floating on the water surface. There is a feature of the present invention.

As described above, according to the present invention, a buoyant pipe is inserted through a plurality of pipe mounting plates in which a plurality of pipe through-holes are perforated so as to be floated on the surface of the pipe, and a key block of the buoyant pipe in the key groove of the pipe through-hole. While the pipe mounting plate is rotated and installed while the pipe mounting plate is positioned in each of the mounting plate fixing grooves formed at the predetermined intervals on the key block at the same time, the pipe mounting plate and the support pipe are engaged by each other. The fastening pipes can be made easily and securely in a prefabricated manner, and the flotation pipes do not swing in the front and rear directions of the pipe mounting plate even when strong waves or wind waves are continuously applied to the floating pipes and pipe mounting plates placed in the water for a long time. Prefabricated sphere The durability and strength of water does not deteriorate even when used for a long time, and the lower end of each pipe mounting plate is connected to the other pipe mounting plate up and down, and additionally, the buoyant pipe is interposed and inserted to facilitate adjustment of the buoyancy according to the floating conditions. It works.

Hereinafter, the preferred configuration according to the present invention will be described in detail with reference to the drawings.

Prefabricated buzan bridge structure (1) using the flotation pipe according to the present invention as shown in Figures 1 to 7 assembling and installing in the sea or river or lake near the shore or water bodies to form a constant moving path or space on the surface of the floating bridge ( It is a prefabricated marine structure for the Buzan Bridge, used for floating bridge, floating dock, yacht marina, dock dock, etc .. It is a rectangular plate shape placed vertically. 4) A plurality of pipe through holes (3) formed on one side of the pipe mounting plate (2) is perforated at a predetermined interval, and the front and rear sides are blocked to have a constant buoyancy in the water as a cylindrical pipe sealed inside. Each of the plurality of pipe through holes 3 formed in the plurality of pipe mounting plates 2 penetrates in a straight line in the front and rear horizontal directions, respectively. While fixing the plurality of pipe mounting plate (2) while the one side of the key block 11 corresponding to the key groove 4 is formed in a straight line protruding and the key block 11 mounting plate at a predetermined interval The fixing groove 12 is formed, and the pipe mounting plate 2 is caught between the key blocks 11 while being rotated and installed in the state in which the pipe mounting plates 2 are positioned in the respective mounting plate fixing grooves 12, respectively. The buoyant pipe 10 which is to be fastened and the buoyant pipe 10 according to the rotational installation of each of the buoyant pipes 10 are fitted to match the empty key grooves 4 of the respective pipe mounting plates 2, respectively. ) Is a separation prevention 13 for preventing the separation from the pipe mounting plate (2), a plurality of base beams 15 are assembled side by side along the upper surface portion of the plurality of pipe mounting plates (2), Water surface is assembled to the upper surface portion of the plurality of base beams 15 Consists of the upper plate structure 17 to form a moving path or a space portion floating up.

The pipe mounting plate 2 is made of a synthetic resin material such as polyethylene, as shown in Figs. 1 to 7 and has a long rectangular shape in a left and right direction in a vertically placed state, and a plurality of them are arranged side by side at a predetermined interval in the front and rear directions. The pipe mounting plate 2 has a plurality of pipe through-holes 3 formed on one side of the pipe mounting plate 2 at a predetermined interval along the left and right direction, and the plurality of pipe through-holes 3 ), The levitation pipe 10 is matched with each other so as to be interposed.

In addition, the pipe mounting plate 2 has an upper bracket 5 protruding integrally formed before and after the upper end, respectively, and the upper bracket 5 has a plurality of upper fastening holes 6 drilled at a predetermined interval. In the state where the upper bracket 5 is in contact with the lower end of the plurality of base beams 15, the bolt fastening hole 16 drilled in the plurality of base beams 15 and the upper fastening hole 6 have normal bolts and nuts. It is fastened up and down fastened.

In addition, the pipe mounting plate 2 has a lower bracket 7 protruding integrally formed before and after the lower end, and the lower bracket 7 has a plurality of lower fastening holes 8 perforated at regular intervals. As shown in 6, the upper fastening hole 6 of the upper bracket 5 and the lower end of the upper bracket 5 in a state where the upper bracket 5 of the other pipe mounting plate 2 is in abutting contact with the lower portion of the lower bracket 7. Ordinary bolts and nuts are fastened to the lower fastening holes 8 of the brackets 7 so that the pipe mounting plates 2 are fastened up and down in multiple stages to penetrate through the pipe through-holes 3 of the pipe mounting plates 2. The buoyancy pipe 10 to be penetrated in the upper and lower multistage to increase the lifting force.

On the other hand, in another embodiment according to the present invention, the pipe mounting plate 2 has a plurality of pipe through-holes 3 having a key groove 4 formed at one side in a row at a predetermined interval along the left and right direction as shown in FIG. 7. A plurality of lower pipe through-holes 9 are perforated at predetermined intervals along the left and right directions at the lower portion of the pipe through-holes 3, and a plurality of through the pipe through-holes 3 and the lower pipe through-holes 9 are formed. As the buoyant pipe 10 is penetrated through the upper and lower multistage, the buoyancy force can be further increased.

The buoyancy pipe 10 is a part to be supported while being interposed through the plurality of pipe mounting plate (2) to be assembled as shown in Figures 1 to 5, made of a synthetic resin material such as polyethylene, both front and rear sides It is made of a long cylindrical pipe in the front and rear direction sealed in a state filled with air filled therein to have a constant flotation force in the water, as shown in Figures 1 to 3, the plurality of the plurality of side Each of the pipe mounting holes 3 formed in the pipe mounting plate 2 connects the plurality of pipe mounting plates 2 spaced at a predetermined interval while interposed therebetween in a straight line in the horizontal direction. It is to be fixed, but each of the buoyant pipe 10 is the outer diameter is to match the inner diameter of the pipe through-hole (3) and the pipe mounting on one side The key block 11 corresponding to the key groove 4 formed at one side of the pipe through-hole 3 of the plate 2 is formed to protrude in a straight line along the support pipe 10 in the front-rear direction, and the key block 11 The mounting plate fixing grooves 12 are formed at regular intervals, and as shown in FIG. 2, the buoyant pipes 10 are inserted through the pipe through-holes 3, respectively. When the pipe mounting plate 2 is positioned in each mounting plate fixing groove 12, the key block 11 is rotated by rotating the cylindrical support pipe 10 at a predetermined angle as shown in FIG. The pipe mounting plate 2 is separated from the key groove 4 and each of the mounting plate fixing grooves 12 is fitted to each other so that the pipe mounting plate 2 is closely held between the key blocks 11. Each flotation pipe 10 is provided with a plurality of pipe mounting plates even by strong waves or storms. The base beam 15 and the top plate structure 17 which are not flowed from or separated from (2) and are assembled to the upper portion of the pipe mounting plate 2 are constantly supported on the water surface by the flotation force of the flotation pipe 10. It is supposed to be.

On the other hand, the buoyancy pipe 10 has about 3 to 5 mounting plate fixing grooves 12 formed in the key block 11 at predetermined intervals, so that about 3 to 5 pipes in the buoyancy pipe 10 are formed. It is most efficient at the time of construction and installation that the mounting plate 2 is assembled, and as shown in FIG. 5, three to five pipe mounting plates 2 are assembled in the flotation pipe 10. As one unit structure, the subsidiary bridge structure 1 having a predetermined length and width is assembled in a manner of continuously fixing a plurality of unit structures under the base beam 15.

As shown in FIGS. 1, 3, 4, and 5, the release preventing device 13 is made of synthetic resin such as polyethylene, and has a block shape corresponding to the key groove 4 of the pipe mounting plate 2. According to the rotational installation of the buoyant pipe 10 interposed in each pipe through-hole 3 of the pipe mounting plate (2) to be assembled in accordance with each of the empty key groove (4) of each pipe mounting plate (2). The buoyancy pipes 10 are rotated in the original state by the waves or storms while blocking the key grooves 4 while the key blocks 11 are positioned in the key grooves 4 so that the buoyant pipes 10 from the pipe mounting plate 2 are fastened. Is prevented from being separated, but the front and rear surfaces of the separation prevention 13 is a tapered inclined surface narrower toward the one side from the other side as shown in Figure 3 to prevent the departure from the front and rear direction of the key groove (4) (13) Inclined before and after the release prevention tool (13) when fitting It is to be easily fitted by the protrusion and protruding jaw (14a, 14b) is formed in each of the front and rear sides of the one end end of the separation prevention member 13, forcing the separation prevention member 13 in the key groove (4). When fitted, the protruding jaws 14a and 14b are fastened to the front and rear surfaces of the pipe mounting plate 2 at the portion where the key grooves 4 are formed, so that the escape prevention holes 13 are not easily separated by strong waves or storms. It is.

In addition, the release pipe 13 is fitted in the key groove 4, each of the support pipe 10, the pipe mounting plate (2) and the release prevention 13, respectively, a portion of the normal plastic The welding pipe is integrally welded through welding (PE welding) to prevent the flotation pipe 10 from escaping and flowing from the pipe mounting plate 2.

"형 금속빔으로 복수개의 파이프장착판(2) 상면부를 따라 좌우방향으로 복수개가 나란히 조립설치되어 전후 일정간격으로 놓여진 복수개의 파이프장착판(2)의 상면부를 연결고정하도록 되어 있되, 상기 각 베이스빔(15)의 하부에는 볼트체결공(16)이 일정간격으로 복수개 천공되어 있어 상기 파이프장착판(2)의 상단부에 형성된 상단브라켓(5)이 복수개의 베이스빔(15) 하단부에 맞닿은 상태에서 상기 볼트 체결공(16)과 상기 상단브라켓(5)에 형성된 상부체결공(6)에 통상의 볼트 및 너트가 체결되어 상하 고정체결되면서 수면위로 부유된 이동로나 공간부의 골조를 형성하도록 되어 있다. As shown in FIGS. 1 to 5, the base beam 15 forms a frame of a moving path or a space portion floating on the water surface and reinforces the overall strength.

The plurality of pipe mounting plates (2) are assembled and installed side by side in the left and right direction along the upper surface portions of the plurality of pipe mounting plates (2) by a metal beam to connect and fix the upper surfaces of the plurality of pipe mounting plates (2). In the lower part of the beam 15, a plurality of bolt fastening holes 16 are drilled at regular intervals, so that the upper bracket 5 formed at the upper end of the pipe mounting plate 2 is in contact with the lower end of the plurality of base beams 15. Ordinary bolts and nuts are fastened to the upper fastening hole 6 formed in the bolt fastening hole 16 and the upper bracket 5 to fasten up and down to form a frame of a moving path or a space portion floating on the water surface.

The top plate structure 17 is made of a conventional deck (deck) made of wood or synthetic resin material as shown in Figs. 1 to 5 and a common long timber and a fixed angle (not shown) on the upper surface of the plurality of base beams 15. It is designed to form a moving path or a space portion floating on the surface of the water while being assembled and installed using.

The action of the present invention is as follows.

In the case where the prefabricated bridge bridge structure 1 of the present invention is assembled and installed in a coastal area or water body of the sea, river, or lake, and used as a floating bridge, a floating dock, a yacht marina, or the like, a plurality of pipes Position the mounting plate 2 side by side at predetermined intervals before and after the insertion pipe 10 in a straight line through each of the plurality of pipe through holes 3 drilled in each pipe mounting plate 2 in a horizontal direction. While connecting and fixing a plurality of pipe mounting plate (2) spaced at regular intervals while being shown, as shown in Figure 2, the key block 11 and the pipe through each formed on one side of the support pipe (10) The pipe mounting plate 2 in each mounting plate fixing groove 12 formed at regular intervals between the key blocks 11 while inserting the flotation pipe 10 so that the key grooves 4 formed on one side of the hole 3 coincide with each other. ) Are each positioned 3, the key block 11 is separated from the key groove 4, and the mounting plate fixing groove 12 is connected to the pipe mounting plate 12. As shown in FIG. 2) is fitted to the pipe mounting plate (2) between each of the key block 11 is tightly fastened so that each of the flotation pipe (10) from the plurality of pipe mounting plate (2) by strong waves or storm. The base beam 15 and the upper plate structure 17 which are assembled on the upper portion of the pipe mounting plate 2 so as not to flow or escape, are constantly floated on the water surface by the flotation force of the flotation pipe 10.

The empty key groove 4 of each pipe mounting plate 2 according to the rotational installation of the buoyant pipe 10 interposed in each pipe through-hole 3 drilled in the plurality of pipe mounting plates 2 as described above. The fitting block is fitted into each of the escape prevention 13 to prevent the escape groove 13 to block the key groove 4, each buoyant pipe 10 is rotated to its original state by the wave or storm, the key block 11 is the key groove Located in (4) to prevent the lifting pipe 10 from being separated from the pipe mounting plate (2), the upper surface portion of the pipe mounting plate (2) is assembled and installed side by side a plurality of base beams (15) side by side To connect and fix the upper surface portion of the plurality of pipe mounting plate (2) placed at a predetermined interval before and after, the bolt fastening hole 16 and the respective pipe mounting plate (2) perforated at a predetermined interval in the lower portion of the base beam (15) The upper fastening hole 6 of the upper bracket 5 formed at the upper end of Fastening up and down with the usual bolts and nuts in the state to form the frame of the moving path or the space floating on the water surface, as shown in Figure 4 the upper plate structure of the normal deck material on the upper surface of the base beam 15 (17) is assembled to form a moving path or a space floating on the surface of the water.

Meanwhile, as shown in FIG. 5, a plurality of pipe mounting plates 2 are assembled in the flotation pipe 10 as a unit structure in the lower part of the base beam 15. The subzan bridge structure 1 having a predetermined length and width is assembled in a manner of continuously fastening the unit structures.

1 is a perspective schematic view showing an exploded state of a prefabricated subzan bridge structure using a flotation pipe according to the present invention;

Figure 2 is an exploded perspective schematic view of a state in which the buoyant pipe is penetrated through each pipe through-hole formed in the plurality of pipe mounting plates in the prefabricated buzan bridge structure using the buoyant pipe according to the present invention.

Figure 3 is an exploded perspective view of a state in which the buoyant pipe is rotated through the plurality of pipe mounting holes rotated in the prefabricated buzan bridge structure using the buoyant pipe according to the present invention and each keyway is fitted with a separation prevention fitting.

4 is a perspective schematic view of a prefabricated subzan bridge structure using a flotation pipe according to the present invention assembled;

Figure 5 is a side schematic view of a prefabricated subzan bridge structure using the support pipe according to the present invention assembled

Figure 6 is a perspective schematic view of the pipe mounting plate is assembled up and down multi-stage in the prefabricated subzan bridge structure using the support pipe according to the present invention.

Figure 7 is a perspective view showing another embodiment of the pipe mounting plate in the prefabricated buzan bridge structure using the flotation pipe according to the present invention

Description of the Related Art

1. Busan bridge structure 2. Pipe mounting plate

3. Pipe through hole 4. Key groove

5. Upper Bracket 6. Upper Fastening Hole

7. Lower Bracket 8. Lower Fastening Hole

9. Lower pipe through hole 10. Floatation pipe

11.Key block 12.Mounting plate fixing groove

13. Release locks 14a, 14b. Protruding jaw

15. Base Beam 16. Bolt Fastener

17. Top Structure

Claims (6)

A pipe mounting plate (2) in which a plurality of pipe through-holes (3) having a key groove (4) formed at one side are arranged side by side at a predetermined interval in a front and rear direction in a rectangular plate shape placed vertically; It is a cylindrical pipe whose both sides are blocked and sealed inside to have a constant flotation force in the water, and each of the plurality of pipe through holes 3 formed in the plurality of pipe mounting plates 2 penetrates in a straight line in the front and rear horizontal directions. Inserting and fixing a plurality of pipe mounting plate (2) is connected to one side of the key block 11 corresponding to the key groove 4 is formed in a straight line protruding and the key block 11 is mounted at regular intervals The plate fixing grooves 12 are formed, so that the pipe mounting plates 2 rotate while being installed in the state in which the pipe mounting plates 2 are positioned in the respective mounting plate fixing grooves 12, respectively. The buoyant pipe 10 and the buoyant pipe 10 which are to be engaged with each other, and each buoyant pipe (10) in accordance with the rotational installation of each buoyant pipe 10 to fit into the empty key groove (4) of each pipe mounting plate (2) 10 is a separation prevention 13 for preventing the separation from the pipe mounting plate (2), and a plurality of base beams 15 are assembled side by side along the upper surface portion of the plurality of pipe mounting plates (2) and Prefabricated submarine bridge structure using the support pipe, characterized in that composed of the upper plate structure (17) which is assembled to the plurality of base beams (15) on the upper surface to form a moving path or a space portion floating on the water surface. According to claim 1, The pipe mounting plate (2) has a top bracket (5) protruding integrally formed before and after the upper end, respectively, and the plurality of upper fastening holes (6) in the upper bracket (5) at regular intervals Since the upper bracket 5 is in contact with the lower end of the plurality of base beams 15, the bolt fastening hole 16 and the upper fastening hole 6 which are drilled in the plurality of base beams 15 are commonly used. Prefabricated sub-bridge structure using the support pipe, characterized in that the bolt and nut is fastened by fastening up and down. According to claim 1 or 2, The pipe mounting plate (2) has a lower bracket (7) protruding integrally formed before and after the lower end, respectively, a plurality of lower fastening holes (8) are fixed to the lower bracket (7) A plurality of perforations are formed at intervals so that the upper brackets 5 protruding from each other before and after the upper end portions of the other pipe mounting plates 2 at the lower portions of the lower brackets 7 are brought into contact with each other at regular intervals. The bolts and nuts are fastened to the lower fastening holes 8 of the upper fastening hole 6 and the lower bracket 7 so that the pipe mounting plate 2 can be fastened up and down in multiple stages. Prefabricated bridge bridge structure using floating pipe. According to claim 1 or 2, The pipe mounting plate (2) is a plurality of pipe through-holes 3 are formed in a row at regular intervals along the left and right direction and the pipe through-holes 3 formed with a key groove (4) on one side The lower pipe through hole (9) in the lower part of the (3) is a plurality of perforations at regular intervals along the left and right directions so that the plurality of support pipes (10) through the pipe through hole (3) and the lower pipe through hole (9) Prefabricated submarine bridge structure using a floating pipe, characterized in that the upper and lower multi-stage through. According to claim 1, wherein the separation prevention 13 is in the shape of a block corresponding to the key groove 4 of the pipe mounting plate (2) and the front and rear surfaces of the separation prevention 13 is narrower from the other side to one side The tapered inclined surface, and protruding jaws 14a and 14b are formed on both sides before and after one side end of the release preventing device 13, respectively. A flotation pipe, characterized in that the projection jaw (14a) 14b is fastened to the front and rear surfaces of the pipe mounting plate (2) of the portion where the key groove 4 is formed, respectively, to prevent the escape prevention port (13) from being separated. Prefabricated bridge bridge structure using. 6. The plastic according to claim 1 or 5, wherein the release preventing member (13) is made of a plastic part in contact with the support pipe (10) and the pipe mounting plate (2) in a state of being fitted into the key groove (4). Prefabricated subzan bridge structure using a flotation pipe, characterized in that the weld is attached to the integral through welding.

Images