JP6218304B2 - Movable breakwater and movable breakwater facility - Google Patents

Description

  The present invention relates to a movable breakwater and a movable breakwater facility that protrude from the bottom of the water onto the water surface as necessary.

  A movable breakwater has been proposed to reduce the effects of waves by installing a wave breaker that can be raised and lowered at the bottom of the water and causing the wave breaker to protrude above the water surface in the event of a tsunami or during stormy weather. . For example, Patent Document 1 discloses a plurality of outer cylinders that are inserted vertically through a concrete provided on the bottom of the sea and inserted into and fixed in the bottom of the water bottom, and arranged in a dense state with the upper end surface opened on the surface of the foundation concrete. Movable breakwater comprising a pipe, a floating pipe inserted into the outer tube so as to be movable up and down, having a lower end opened and a closed upper end, and an air supply device for supplying air into each floating pipe Is described.

JP 2004-116131 A

  By the way, as shown in FIG. 18, the movable breakwater as described above is levitated at the overlapping portion between the lower end of the levitated tube 52 and the upper end of the outer cylindrical tube 51 when the levitated tube 52 is raised. The horizontal stress due to the wave collision to the tube 52 is received. For this reason, the outer cylinder pipe side upper reinforcement member 51b is provided in the upper end outer wall of the outer cylinder pipe 51, and the floating pipe side upper reinforcement member is arranged on the inner wall of the floating pipe 52 that overlaps the outer cylinder pipe side upper reinforcement member 51b in the horizontal direction. 52c is provided, and a floating tube side lower reinforcing member 52d is provided on the inner wall at the lower end of the floating tube 52, and the outer tube side of the outer tube 51 that overlaps the floating tube side lower reinforcing member 52d in the horizontal direction A lower reinforcing member 51c is provided. In particular, in the upper outer wall of the outer tube, a frame-shaped diaphragm is used as the outer tube side upper reinforcing member 51b in order to increase rigidity. The outer tube side upper reinforcing member 51b as a diaphragm is not limited to the rectangular frame shape in cross section shown in FIG. 18 and is not clearly shown in the drawing. For example, a plate material along the bottom surface GL and a steel plate on the lower side from the steel plate. And a rib provided between the outer tube 51 and the outer wall surface of the outer tube 51.

  Further, when the levitation tube 52 is levitated, a stopper 52 b is provided on the outer periphery of the levitation tube 52 in order to prevent the levitation tube 52 from coming off from the outer tube 51. And the outer cylinder pipe opening part rocking | fluctuation member 51d is provided in the part opened to the water bottom GL side of the outer cylinder pipe 51. As shown in FIG. The outer tube side upper reinforcing member 11b is attached to the outer tube 51 through a flange 51g. When the levitation tube 52 is lifted, the stopper 52b and the outer cylinder tube opening rocking member 51d are in contact with each other, and the levitation tube 52 is prevented from coming off the outer tube 51.

  However, as described above, the outer cylinder pipe 51 is provided with the outer cylinder pipe side upper reinforcing member (diaphragm) 51b on the upper end outer wall. Therefore, when placing the outer cylinder pipe, A grip allowance 51f must be provided as a grip allowance for the vibro hammer above the upper reinforcing member 51b. For this reason, since the grip allowance 51f protrudes from the water bottom GL, it is necessary to remove the grip allowance 51f after driving the outer tube 51 into the water bottom ground. As a result, labor is required for the construction work. Further, a flange 51g is necessary to attach the outer tube opening opening rocking member 51d.

  The present invention relates to a movable breakwater and a movable breakwater that can easily perform construction work and can reliably attach a member for avoiding the levitation tube to come off from the outer tube with a simple structure. The purpose is to provide a type of wave breaker.

  The present invention includes an outer tube formed in a vertically long shape, having an opening on the water bottom side and inserted and fixed in the water bottom ground, and a plurality of penetrations provided on the opening side of the outer tube A hole and a float that is inserted into the outer tube and is arranged so as to be movable up and down in the longitudinal direction of the outer tube, and is provided so as to be able to ascend by generating buoyancy with the gas supplied to itself. An outer cylinder tube opening rocking member provided on the inner wall, and a curved surface having a shape along the shape of the inner wall of the tube and the inner wall of the opening of the outer tube, and the outer tube tube rocking A fixing protrusion provided on the outer surface of the curved surface of the member and fitted in the through-hole to fix the outer cylinder tube opening rocking member to the outer cylinder tube; A cap that fits into the hole, and a fastening member that fastens the fixing protrusion and the cap A movable breakwater, which comprises a.

  In this movable breakwater, after the outer tube is driven into the water bottom, the outer tube opening opening rocking member is attached to the outer tube. For this reason, at the time of driving, the portion to which the outer cylinder tube opening rocking member is to be attached is not attached, so that this portion can be used as a grip allowance to be gripped by the chuck portion of the Yatco. For this reason, since the operation | work which removes a grip allowance becomes unnecessary, construction work can be made easy. Further, the outer cylindrical tube opening rocking member can be attached to the outer tubular tube by fitting the fixing projection of the outer cylindrical tube opening rocking member into the through-hole of the outer tubular tube and fastening the bolt to the cap. . The load caused by the buoyancy of the levitation tube is received by the fixing projection of the outer cylindrical tube opening rocking member engaged with the through hole, but the size of the outer cylindrical tube rocking member may be increased. Therefore, the buoyancy can be reliably received. In this way, this operational breakwater can be easily installed, and can be securely attached to the outer tube with a simple structure to prevent the levitation tube from coming off the outer tube. it can.

  In this invention, it is preferable that the said outer cylinder pipe opening part rocking | fluctuation member has an at least 3 projection part which protrudes from the said curved surface outside the said curved surface. By doing in this way, the positioning operation | work at the time of attaching an outer cylinder pipe opening part rocking | fluctuation member to an outer cylinder pipe becomes easy.

  In this invention, it is preferable that the said outer cylinder pipe opening part rocking | fluctuation member has an outer cylinder pipe upper end rocking | fluctuation member engaged with the end surface in the said opening part side of the said outer cylinder pipe. In this way, since the outer cylinder pipe upper end rocking member is engaged with the end of the outer cylinder pipe on the opening side, when the outer cylinder pipe opening rocking member is attached to the outer cylinder pipe, the outer cylinder pipe opening It is possible to reduce the possibility that the part rocking member will fall below the outer tube.

  In the present invention, the levitation tube includes a storage battery and has a power reception unit for supplying power to the storage battery, and the outer tube is configured to supply power to the power reception unit at a lowered position of the levitation tube. The power transmission unit is disposed in a range embedded at a predetermined depth from the water bottom surface of the outer tube, and the power reception unit is an upper end of the floating tube. Is preferably disposed opposite the power transmission unit in a lower range than the upper end of the levitation tube at the lowered position coincident with the water bottom surface. In this way, since the power receiving unit and the power transmitting unit are arranged below the water bottom surface at the lowered position of the levitation tube, the power receiving unit and the power transmitting unit may come into contact with the throwing or the like and may be damaged. The risk of doing so can be reduced.

  The present invention is a movable breakwater facility in which a plurality of the above movable breakwaters are arranged on the bottom of the water. Since this movable breakwater facility has the above-described movable breakwater, the same action and effect as the above-described movable breakwater are exhibited.

  The present invention relates to a movable breakwater and a movable breakwater that can easily perform construction work and can reliably attach a member for avoiding the levitation tube to come off from the outer tube with a simple structure. A type of wave-breaking facility can be provided.

FIG. 1 is a plan view of a movable breakwater facility according to an embodiment of the present invention. 2 is a partial cross-sectional view taken along arrow AA in FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 4 is an overall configuration diagram of a movable breakwater facility including a movable breakwater according to an embodiment of the present invention. FIG. 5A is a schematic diagram illustrating a state where the floating pipe of the movable breakwater according to the embodiment of the present invention is levitated. FIG. 5-2 is a schematic diagram illustrating a state where the floating pipe of the movable breakwater according to the embodiment of the present invention is levitated. FIG. 5-3 is a schematic diagram illustrating a state where the floating pipe of the movable breakwater according to the embodiment of the present invention is levitated. 6 is an enlarged cross-sectional view taken along the line BB in FIG. FIG. 7 is an enlarged view showing a mounting structure of an outer cylindrical tube opening rocking member included in the movable breakwater according to the present embodiment. FIG. 8 is a view showing the outer cylindrical tube opening rocking member viewed from the direction indicated by the arrow C in FIG. FIG. 9 is a view showing the outer cylindrical tube opening rocking member viewed from the direction indicated by the arrow D in FIG. 7. FIG. 10 is an enlarged view showing a mounting structure of an outer cylindrical tube opening rocking member included in a movable breakwater according to a modification of the present embodiment. FIG. 11 is a perspective view of the cap. FIG. 12 is a perspective view showing a modified example of the cap. FIG. 13 is an enlarged view showing a mounting structure of an outer cylindrical tube opening rocking member included in a movable breakwater according to a modification of the present embodiment. 14 is an enlarged cross-sectional view taken along line BB in FIG. 15 is an enlarged cross-sectional view taken along the line BB in FIG. 16 is a view taken along the line CC in FIG. FIG. 17 is an explanatory diagram of the construction process of the movable breakwater according to the present embodiment. FIG. 18 is a schematic cross-sectional view of a conventional movable breakwater.

  A mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described in detail with reference to the drawings. The present invention is not limited by the contents described in the following embodiments. The configurations described below include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those that are equivalent. Furthermore, the structures described below can be combined as appropriate. The configuration can be omitted, replaced, or changed without departing from the gist of the present invention.

  The movable breakwater according to this embodiment is installed on the bottom of the sea, riverbed, etc., for example, when a tsunami or storm surge occurs, it floats from the bottom of the water to the surface of the water and obstructs the passage of the tsunami or storm surge. And protect the back ground of breakwaters such as harbor facilities or houses.

  FIG. 1 is a plan view of a movable wave-proof facility according to the present embodiment. 2 is a partial cross-sectional view taken along arrow AA in FIG. This FIG. 2 has shown the state which the movable breakwater which concerns on this embodiment surfaced. 3 is a cross-sectional view taken along line BB in FIG. FIG. 3 shows a state where the movable breakwater according to the present embodiment is at the bottom of the water, that is, a state before rising. FIG. 4 is an overall configuration diagram of a movable breakwater facility including a movable breakwater according to the present embodiment. FIGS. 5-1 to 5-3 are schematic views showing a state where the floating pipe of the movable breakwater according to the present embodiment is levitated.

  As shown in FIGS. 1 to 3, the movable breakwater facility 1 includes a plurality of movable breakwaters 10 and a monitoring / control system facility 100. In the present embodiment, the plurality of movable breakwaters 10 are arranged in a row between the quays K1 and K2, and partition the inside of the harbor (inside the harbor BI) and the outside of the harbor (outside the harbor BO). The movable breakwater 10 has the levitation tube 12 disposed inside the outer cylindrical tube 11 and levitates (lifts) the levitation tube 12 by supplying gas (air in this embodiment) to the inside of the levitation tube 12. It is a structure. The movable breakwater 10 can be installed not only between the quays K1 and K2, but also between breakwaters (including fixed, pile, and floating bodies).

  Each movable breakwater 10 is supplied with air from each air pipe 3. The plurality of air pipes 3 are combined into an air pipe duct 2 disposed on the bottom of the water and connected to a gas supply device provided in the monitoring / control system facility 100 on one quay K2. In the event of an emergency, for example, when a tsunami or storm surge occurs, gas is supplied from the gas supply device into the levitation pipe 12 of each movable breakwater 10 via the air supply pipe 3, and the levitation pipe 12. Floats from the bottom of the water and part of it protrudes from the water surface.

  As shown in FIGS. 2 and 3, the movable breakwater 10 includes an outer tube 11 (a fixed portion of the movable breakwater 10) and a floating tube 12 (a movable portion of the movable breakwater 10). The outer tube 11 and the levitation tube 12 are cylindrical members and are formed of steel tubes. Both the outer tube 11 and the levitation tube 12 are subjected to anticorrosion. The outer tube 11 and the levitation tube 12 are not limited to a cylindrical shape. The outer tube 11 and the levitation tube 12 are not limited to steel pipes, and may be made of carbon fiber, or one of the outer tube 11 or the levitation tube 12 is made of steel and the other is made of carbon fiber. Such a structure of different materials may be used.

  The outer tube 11 is formed in a vertically long shape and is driven into the water bottom ground E. The outer tube 11 has a lower layer portion inserted and fixed in the water bottom ground E, and a rubble 5 is laid around the upper layer portion. The upper surface of the rubble 5 becomes the water bottom GL. The outer tube 11 has an opening 11a at the upper end on the water bottom side. Further, the outer tube 11 is inserted with the air supply tube 3 from the bottom portion inserted into the water bottom ground E, and the gas outlet 3a is disposed inside.

  The levitation tube 12 is inserted into the outer tube 11 from the opening 11 a of the outer tube 11 along the longitudinal direction (tube axis direction) of the outer tube 11, with respect to the longitudinal direction of the outer tube 11. And can be moved up and down. The levitation tube 12 is configured to generate buoyancy by the gas supplied into the buoyancy tube 12 and to float from the outer tube 11. Specifically, as shown in FIG. 3, the levitation tube 12 is provided with a plurality of partition members (plate-like members in the present embodiment) 15 and 16 therein. (Hereinafter, the partition member 15 is referred to as a first partition member, and the partition member 16 is referred to as a second partition member). The first partition member 15 is disposed above the levitation tube 12, and the second partition member 16 is disposed below the first partition member 15. In addition, the upper end of the levitation tube 12 is closed by a lid 17. The levitation tube 12 is partitioned into a plurality of rooms by the first partition member 15, the second partition member 16, and the lid 17.

  The space 13 partitioned by the first partition member 15, the second partition member 16, and the side wall of the levitation tube 12 accumulates the gas supplied from the air supply tube 3 to the inside of the levitation tube 12 and generates buoyancy in the levitation tube 12. It is a space to make it. Hereinafter, the space 13 is referred to as an air chamber 13. The space CR partitioned by the lid 17, the first partition member 15, and the side wall of the levitation tube 12 monitors the state of the movable breakwater 10 or levitates the levitation tube 12 when no gas is supplied from the air supply tube 3. A control device 20 is arranged for causing the floated pipe 12 to move down and to return the floated pipe 12 to the inside of the outer tube 11. Hereinafter, the space CR is referred to as a machine room CR. The second partition member 16 includes a hole 16a. The hole 16 a guides the gas supplied from the air supply pipe 3 to the inside of the floating pipe 12 to the air chamber 13.

  Buoyancy generating means 14 is attached to the inner surface of the side wall of the levitation tube 12. The buoyancy generating means 14 is, for example, a resin having bubbles, for example, polystyrene foam. The buoyancy generating means 14 may have a structure in which a simple space is filled with a gas such as air or nitrogen. The movable breakwater 10 supplies gas to the air chamber 13 of the levitation tube 12 in the event of an emergency, generates buoyancy in the levitation tube 12 by this gas, and causes the levitation tube 12 to float from the outer tube 11. By attaching the buoyancy generating means 14 to the levitation tube 12, when the levitation tube 12 is levitated, the amount of buoyancy required to levitate the levitation tube 12 is insufficient by the buoyancy generated by the buoyancy generation means 14. It may be covered by gas. As a result, the amount of gas supplied to the inside of the levitation tube 12 can be reduced, so that the levitation tube 12 can be quickly levitated.

  The levitation tube 12 has an opening 12a at its lower end. And the gas outlet 3a of the air feeding pipe 3 is arrange | positioned under the opening part 12a. Note that the gas inlet of the air supply pipe 3 is connected to the gas supply device described above.

  As shown in FIG. 4, the gas supply device includes a gas bottle 104, an on-off valve 110 provided between the gas bottle 104 and the air supply pipe 3, and a compressor 102 driven by an electric motor 103. The These are provided in the monitoring / control system facility 100. A gas inlet of the air supply pipe 3 is connected to an on-off valve 110 constituting a gas supply device. The gas bottle 104 is filled with a high-pressure (about 20 MPa) gas by the compressor 102. When the levitation tube 12 is levitated, the on-off valve 110 is opened, and the gas in the gas bottle 104 is supplied into the levitation tube 12 through the air supply tube 3. The gas bottles 104 are provided for the respective movable breakwaters 10. In this embodiment, two gas bottles 104 are prepared for one movable breakwater 10. Note that the air supply pipes 3 may be individually provided for the respective gas bottles 104, and the two air supply pipes 3 may be disposed below the opening 12 a of the floating pipe 12.

  The floating pipe 12 of one movable breakwater 10 can be levitated by one gas bottle 104, but by preparing two gas bottles 104 for one movable breakwater 10, When some trouble occurs in the gas supply system, the other can be used as a backup, so that the levitation tube 12 can be lifted more reliably. Further, by supplying gas from the two gas bottles 104 to one movable breakwater 10, the levitation tube 12 can be floated more quickly than when the gas bottle 104 is used alone. In addition, as an example in which the floating pipe 12 of the three movable breakwaters 10 is levitated by one gas bottle 104, only the floating pipe 12 of the central movable breakwater 10 is fed between the air feeds 3 In the movable breakwaters 10 on both sides, the volume of the buoyancy generating means 14 is made larger than that in the central movable breakwater 10 so that the buoyancy generating means 14 has a substantially neutral buoyancy. It is preferable that the tube 12 is lifted so as to be lifted. By comprising in this way, it becomes possible to reduce the number of the air supply pipes 3. Further, with the same configuration, it is also possible to configure the floating pipes 12 of the five movable breakwaters 10 to be levitated by one gas bottle 104. Thus, you may comprise so that the floating pipe | tube 12 of the several movable breakwater 10 may be levitated by the one gas bottle 104. FIG.

  The motor 103 and the compressor 102 are controlled by the monitoring / control device 101. For example, the monitoring / control device 101 acquires the pressure of the gas filled in the gas bottle 104 by the gas pressure sensor 111, and drives the electric motor 103 to operate the compressor 102 when the pressure is lower than the specified pressure. The gas is filled from the compressor 102 into the gas bottle 104 until a predetermined pressure is reached. The monitoring / control device 101 acquires the pressure in the air supply pipe 3 from an air supply pipe pressure detection sensor (air supply pipe pressure detection means) 105 that detects the pressure in the air supply pipe 3 provided in the air supply pipe 3. Then, it is monitored whether or not there is a leaking part in the air pipe 3.

  Further, the monitoring / control device 101 communicates with the control device 20 in the machine room CR of the movable breakwater 10 to monitor the state of the movable breakwater 10 and to control the movement of the floating pipe 12. For example, when returning the floated levitation pipe 12 to the outer cylinder pipe 11, the monitoring / control device 101 is provided in the middle of a pipe connecting the air chamber 13 and the outside of the air chamber 13 via the control device 20. Open the exhaust valve 18. As a result, the gas in the air chamber 13 is released to the outside of the air chamber 13, and the gas in the air chamber 13 is replaced with water, so that the buoyancy of the levitation tube 12 is lowered. Fits in the outer tube 11.

  In the event of an emergency, for example, when the monitoring / control device 101 receives an alarm such as a tsunami or a storm surge, the monitoring / control device 101 opens the on-off valve 110 and, as shown in FIG. Thus, the gas in the gas bottle 104 is supplied to the inside of the levitation tube 12. The gas supplied from the air supply pipe 3 into the levitation pipe 12 enters the air chamber 13 through the hole 16a of the second partition member 16 as shown in FIG. When the sum of the buoyancy generated by the gas inside the air chamber 13 and the buoyancy generated by the buoyancy generating means 14 exceeds the weight of the entire buoyancy tube 12 in water, as shown in FIG. Then, ascending from the outer tube 11 toward the water surface WL is started. And as shown to FIGS. 5-3, a part of levitation pipe 12 protrudes on the water surface WL. At this time, excess gas in the air chamber 13 is exhausted from the hole D1 provided in the air chamber 13. Further, the water in the machine room CR is drained from a hole D2 provided in the machine room CR. In this way, in the event of an emergency, as shown in FIG. 2, a plurality of levitation pipes 12 project from the water surface WL in a row to exhibit the function of a breakwater, and protect harbor facilities and the like from tsunamis and storm surges. Next, details of the movable breakwater 10 provided in the movable breakwater facility 1 will be described with reference to the drawings.

  6 is an enlarged cross-sectional view taken along the line BB in FIG. This FIG. 6 has shown the state which the movable breakwater 10 surfaced. As shown in FIG. 6, the outer tube 11 of the movable breakwater 10 has an opening 11a at the upper end on the water bottom side as described above. The outer tube 11 is arranged such that the opening 11 a coincides with the water bottom GL which is the upper surface of the rubble 5. Moreover, the outer cylinder pipe 11 is an outer cylinder pipe side upper reinforcement member (outer cylinder pipe side reinforcement member) with respect to the outer wall embedded by the rubble 5 with the predetermined depth H1 (for example, 70 [cm]) below the water bottom GL. Member) 11b. Further, the outer cylinder pipe 11 has an outer cylinder pipe-side lower reinforcement member (outer cylinder pipe-side reinforcement member) with respect to an outer wall embedded in the water bottom ground E at a predetermined depth H2 downward from the outer cylinder pipe-side upper reinforcement member 11b. ) 11c is provided.

  The outer tube side upper reinforcing member 11b and the outer tube side lower reinforcing member 11c are formed of a steel plate in a ring shape, fixed to the outer wall of the outer tube 11 and preferably arranged uniformly in the circumferential direction. It is fixed with. Moreover, the outer cylinder pipe 11 is provided with the outer cylinder pipe opening part rocking | fluctuation member 11d in the inner wall used as the inner edge of the opening part 11a. The outer cylindrical tube opening rocking member 11d is a steel plate formed in a ring shape, and is fixed to the inner wall of the outer cylindrical tube 11, and is preferably fixed in a state of being uniformly arranged in the circumferential direction. Moreover, the outer cylinder pipe 11 is provided with the outer cylinder pipe upper end rocking | fluctuation member 11e in the upper end used as the outer edge of the opening part 11a. The outer cylinder pipe upper end rocking member 11e is formed of a steel plate in a ring shape, and is integrally joined to the outer cylinder pipe opening rocking member 11d and fixed to the upper end of the outer cylinder pipe 11, preferably in the circumferential direction. It is fixed in a uniformly arranged state. In addition, if the required cross-sectional strength can be ensured, the outer tube side upper reinforcing member 11b and the outer tube side lower reinforcing member 11c as the outer tube side reinforcing member may not be provided.

  As shown in FIG. 6, the floating pipe 12 of the movable breakwater 10 is inserted from the opening 11 a of the outer cylindrical pipe 11 along the longitudinal direction of the outer cylindrical pipe 11. In a state where the levitation tube 12 descends and is accommodated in the outer cylindrical tube 11, the upper end of the levitation tube 12 exhibits a descending position that coincides with the water bottom GL. The levitation tube 12 is provided with a stopper 12b. The stopper 12b is fixed to the outer wall of the levitation tube 12, and stops further rising of the levitation tube 12 by abutting against the outer cylinder tube opening rocking member 11d at the raised position where the levitation tube 12 is levitated. That is, the stopper 12b positions the flying height of the floating pipe 12. In addition, the levitation tube 12 is formed on the inner wall that is positioned to face the outer tube-side upper reinforcing member 11b of the outer tube 11 in the horizontal direction with the stopper 12b in contact with the outer tube tube opening rocking member 11d. A floating tube side upper reinforcing member (floating tube side reinforcing member) 12c is provided. Further, the levitation tube 12 is formed on the inner wall that is positioned to face the outer tube-side lower reinforcing member 11c of the outer tube 11 in the horizontal direction with the stopper 12b in contact with the outer tube tube opening rocking member 11d. A floating tube side lower reinforcing member (floating tube side reinforcing member) 12d is provided.

  The levitation tube side upper reinforcement member 12c and the levitation tube side lower reinforcement member 12d are formed of a shape steel in a ring shape, fixed to the inner wall of the levitation tube 12, and preferably fixed in a circumferentially arranged state. Has been. The section steel that forms the floating pipe side upper reinforcing member 12c and the floating pipe side lower reinforcing member 12d is shown as a T-section steel in FIG. In addition, the shape steel that can be used as the levitation tube side upper reinforcement member 12c and the levitation tube side lower reinforcement member 12d includes I-shaped steel, H-shaped steel, L-shaped steel, Z-shaped steel, angle steel, groove-shaped steel, There are flat steel and spherical flat steel. The levitation tube 12 is provided with a levitation tube lower end rocking member 12e on the outer wall at the lower end thereof. The levitation tube lower end rocking member 12e is a steel plate formed in a ring shape, and is fixed to the lower end of the levitation tube 12.

  In such a movable breakwater 10, the stopper 12 b comes into contact with the outer cylinder tube opening rocking member 11 d at the rising position where the levitation tube 12 is levitated, and the levitation height of the levitation tube 12 is positioned. Then, the outer cylinder tube opening rocking member 11d, the outer tube upper end rocking member 11e, and the floating tube lower end rocking member 12e serve as a spacer between the outer tube 11 and the floating tube 12, and waves and wind Swaying of the levitation tube 12 due to the collision is suppressed. Further, the horizontal stress on the levitation tube 12 due to the collision of waves and wind is received by the outer tube side reinforcing members 11b and 11c and the levitation tube side reinforcing members 12c and 12d. Note that the outer cylinder tube opening rocking member 11d and the outer tube upper end rocking member 11e also function as a reinforcing member that receives horizontal stress on the floating tube 12 due to a wave or wind collision. Next, the mounting structure of the outer cylindrical tube opening rocking member 10d will be described in detail.

  FIG. 7 is an enlarged view showing a mounting structure of an outer cylindrical tube opening rocking member included in the movable breakwater according to the present embodiment. FIG. 8 is a view showing the outer cylindrical tube opening rocking member viewed from the direction indicated by the arrow C in FIG. In FIG. 8, the outer tube 11 is indicated by a two-dot chain line. FIG. 9 is a view showing the outer cylindrical tube opening rocking member viewed from the direction indicated by the arrow D in FIG. 7. A plurality of through holes 11 </ b> H are provided on the opening 11 a side of the outer tube 11. As shown in FIG. 9, the outer cylinder tube opening rocking member 11 d has a curved surface BP having a shape along the shape of the inner wall 11 </ b> I serving as the inner edge of the opening 11 a of the outer tube 11. In the present embodiment, the outer cylinder pipe opening rocking member 11d is a plate-like member bent along the shape of the inner wall 11I, and the curvature radius of the curved surface BP is equal to the curvature radius of the inner wall 11I of the outer cylinder pipe 11. It becomes almost the same. That is, the outer cylindrical tube opening rocking member 11d is a member having a shape obtained by cutting a part of a circular tube. And as for the outer cylinder pipe opening part rocking | fluctuation member 11d, the shape seen from the opening part 11a side of the outer cylinder pipe 11 is circular arc shape. A plurality of outer tube opening rocking members 11 d are provided on the inner wall 11 </ b> I of the outer tube 11 in the circumferential direction of the outer tube 11.

  The outer cylinder tube opening rocking member 11d includes an outer tube upper end rocking member 11e at the end of the outer tube 11 on the opening 11a side. The outer tube upper end rocking member 11e is engaged with the end (opening side end) 11T on the opening 11a side of the outer tube 11 when attaching the outer tube opening rocking member 11d to the outer tube 11. Thus, the outer cylindrical tube opening rocking member 11d can be positioned. The operation of attaching the outer cylinder pipe opening rocking member 11d to the outer cylinder pipe 11 is performed in water, but the outer cylinder pipe upper end rocking member 11e is engaged with the opening side end portion 11T, whereby the outer cylinder pipe opening rocking member is rocked. The work efficiency can be improved by reducing the possibility of the stop member 11d falling into the outer tube 11. In addition, the outer cylinder pipe opening part rocking | locking member 11d does not need to have the outer cylinder pipe upper end rocking member 11e.

  The outer cylinder tube opening rocking member 11d has a bolt hole 11df for attaching an eyebolt for suspending the outer cylinder tube opening rocking member 11d at the end of the outer tube 11 on the opening 11a side. . When attaching the outer cylinder tube opening rocking member 11d to the outer tube 11, the eyebolt is screwed into the bolt hole 11df and the outer tube opening rocking member 11d is suspended via the eyebolt. By doing in this way, the work efficiency in water improves.

  As shown in FIGS. 7 to 9, the outer cylindrical tube opening rocking member 11 d has a fixing protrusion 32. In the present embodiment, there are a plurality of fixing protrusions 32, but at least one fixing protrusion 32 is sufficient. The fixing protrusion 32 is provided on the outer side of the curved surface BP of the outer cylinder tube opening rocking member 11d, and protrudes from the outer surface of the curved surface BP of the outer cylinder tube opening rocking member 11d. In the present embodiment, the fixing protrusion 32 is made of the same material as that of the outer cylindrical tube opening rocking member 11d, but is not limited to such a form. In the present embodiment, the fixing protrusion 32 and the outer cylindrical tube opening rocking member 11d are manufactured by casting. Although both materials are cast iron, it is not limited to this.

  The fixing protrusion 32 is fitted into the through hole 11H of the outer tube 11 when the outer tube opening sway member 11d is attached to the outer tube 11. Then, the fixing protrusion 32 fixes the outer cylinder tube opening rocking member 11 d to the outer tube 11. The fixing protrusion 32 has a bolt mounting hole 11dh having a counterbore 11dz. The bolt mounting hole 11dh penetrates both the fixing protrusion 32 and the outer tube opening rocking member 11d. A bolt 34 which is a fastening member described later passes through the bolt mounting hole 11dh. Since the head of the bolt 34 is hidden behind the counterbore 11dz and does not protrude from the surface of the outer cylindrical tube opening rocking member 11d, it is between the floating tube 12 and the outer cylindrical tube opening rocking member 11d shown in FIG. The required predetermined amount of clearance can be reliably ensured. In addition, since the head of the bolt 34 does not protrude from the surface of the outer cylindrical tube opening rocking member 11d, the side surface of the levitated pipe 12 does not come into contact with the head of the bolt 34, and the outer cylindrical tube opening rocking member 11d. Touch the entire surface of the. When the head of the bolt 34 comes into contact with the levitation tube 12, a large force acts locally on the portion, but it can be avoided that a large force acts locally on the levitation tube 12 by the countersink portion 11 dz.

  The fixing protrusion 32 is circular in plan view. As will be described later, the fixing protrusion 32 has an inclined portion 32S, and thus has a truncated cone shape. The shape of the portion into which the fixing protrusion 32 of the through hole 11H is fitted is at least circular. The fixing protrusion 32 is not limited to a circular shape in plan view, and may be, for example, a polygon such as a quadrangle or a hexagon in plan view, or an oval shape in plan view. In this case, the portion into which the fixing projection 32 of the through hole 11H is fitted is also shaped to match the fixing projection 32.

  A cap 30 is fitted into the through hole 11 </ b> H of the outer tube 11 from the outside of the outer tube 11. The cap 30 includes a fitting portion 30A that is fitted into the through hole 11H, and a locking portion 30B that is connected to the fitting portion 30A and has a size larger than that of the fitting portion 30A. The locking portion 30B is a portion that protrudes toward the radially outer side of the through hole 11H when the fitting portion 30A of the cap 30 is fitted into the through hole 11H and engages with the outer wall 11O of the outer tube 11. The cap 30 has a bolt hole 31. The bolt 34 is screwed into the bolt hole 31. For this reason, the bolt hole 31 is formed with a female screw that meshes with the male screw of the bolt 34. In the present embodiment, the bolt hole 31 does not penetrate the cap 30, but may penetrate the cap 30.

  The bolt 34 as a fastening member is formed with the fixing protrusion 32 and the cap 30 in a state where the fixing protrusion 32 of the outer cylinder tube opening rocking member 11d and the fitting portion 30A of the cap 30 are fitted in the through hole 11H. Conclude. That is, the bolt 34 is inserted from the bolt mounting hole 11dh of the outer tube opening opening rocking member 11d and screwed into the bolt hole 31 of the cap 30. When the bolt 34 is tightened, the fixing projection 32 and the cap 30 are fastened. Since the fixing projection 32 is provided on the outer cylinder tube opening rocking member 11d, when the fixing projection 32 and the cap 30 are fastened, the outer cylinder tube opening rocking member 11d is outside. It is attached to the tube 11.

  As described above, when the levitation tube 12 shown in FIG. 6 is levitated, the stopper 12b comes into contact with the outer cylinder tube opening rocking member 11d, and further levitation of the levitation tube 12 is stopped. At this time, the outer cylinder tube opening rocking member 11 d needs to receive the buoyancy of the levitation tube 12. For this reason, a large load resulting from the buoyancy of the levitation tube 12 acts on the outer cylinder tube opening rocking member 11d. In the present embodiment, since the fixing projection 32 of the outer cylindrical tube opening rocking member 11d is fitted and fixed in the through hole 11H, the fixing projection 32 receives a load caused by the buoyancy of the levitation tube 12. receive. The fixing protrusion 32 can have a cross-sectional area larger than that of the bolt and an area larger than that of the bolt, as compared with the structure in which the outer cylinder tube opening rocking member 11d is fixed to the outer tube 11 with a bolt. Since it engages with the through hole 11H, a large load can be received. As a result, the fixing protrusion 32 can surely stop the floating tube 12 from rising, and can also reduce the possibility of deformation and a decrease in durability.

  Moreover, since it is not necessary to use a high volt | bolt by using the projection part 32 for fixation, the manufacturing cost of the movable breakwater 10 can be reduced. Furthermore, the structure in which the outer cylinder pipe opening rocking member 11d is fixed to the outer cylinder pipe 11 with bolts may cause loosening of the bolts due to excessive force acting on the bolts when the floating pipe 12 is lifted. . However, in this embodiment, since the load due to the floating of the floating pipe 12 is received by the fixing projection 32, the force acting on the bolt 34 is only the fastening force. For this reason, the looseness of the bolt 34 is suppressed and the reliability is improved.

  In the present embodiment, the outer cylinder tube opening rocking member 11 d is attached to the through-hole 11 </ b> H of the outer tube 11 through the fixing protrusion 32 and the cap 30. For this reason, the member (The flange 51g shown in FIG. 17 and the outer pipe side upper reinforcement member 51b as a diaphragm) for attaching the outer cylinder pipe opening part rocking | fluctuation member 11d to the outer cylinder pipe 11 becomes unnecessary. For this reason, while being able to suppress the increase in the mass of the outer cylinder pipe 11, the manufacturing cost of the movable breakwater 10 can be reduced. Further, in the present embodiment, the fixing protrusion 32 is fitted into the through-hole 11H, and the fixing member 32 is fastened to the cap with the bolt 34, so that the outer tube opening opening rocking member is reliably provided with a simple structure. 11 d can be attached to the outer tube 11. Further, as described above, since the buoyancy of the levitation tube 12 is received by the fixing projection 32, the buoyancy can be reliably received with a simple structure.

  As shown in FIGS. 7 and 8, in the present embodiment, the outer cylindrical tube opening rocking member 11 d has a protrusion 33 protruding from the curved surface BP outside the curved surface BP. The outer cylindrical tube opening rocking member 11 d has at least three protrusions 33. When the outer cylindrical tube opening rocking member 11d is attached to the inner wall 11I of the outer cylindrical tube 11, the plurality of protrusions 33 abut against the inner wall 11I. When the outer cylindrical tube opening rocking member 11d is attached to the inner wall 11I of the outer cylindrical tube 11 by the plurality of projections 33, the outer cylindrical tube opening rocking member 11d and the inner wall 11I of the outer cylindrical tube 11 are positioned. Becomes easier. In particular, since the mounting operation of the outer cylindrical tube opening rocking member 11d is performed in water, the above-described effect of facilitating positioning is effective.

  As shown in FIG. 7, the fixing protrusion 32 and the fitting portion 30 </ b> A of the cap 30 have a tapered shape whose size decreases toward the tip. For this reason, the fixing protrusion 32 and the fitting portion 30A of the cap 30 have inclined portions 32S and 30S, respectively. By making the fixing protrusion 32 and the fitting portion 30A of the cap 30 into such a shape, these can be easily fitted into the through hole 11H. Further, when the fixing protrusion 32 and the cap 30 are fastened, the inclined portions 32S and 30S exert a wedge action, so that the outer cylindrical tube opening rocking member 11d can be firmly fixed to the through hole 11H. it can. Note that the fixing protrusion 32 and the fitting portion 30A of the cap 30 may not have the inclined portions 32S and 30S. Further, either one of the fixing protrusion 32 and the fitting portion 30A of the cap 30 may have an inclined portion.

  FIG. 10 is an enlarged view showing a mounting structure of an outer cylindrical tube opening rocking member included in a movable breakwater according to a modification of the present embodiment. In this modification, the through hole 11Ha has a first inclined portion 11SA and a second inclined portion 11SB corresponding to the inclined portion 32S of the fixing projection 32 and the inclined portion 30S of the fitting portion 30A of the cap 30. Have. When either one of the fixing protrusion 32 and the fitting portion 30A of the cap 30 has an inclined portion, the through hole 11Ha has one of the first inclined portion 11SA and the second inclined portion 11SB. Just do it.

  The outer cylinder tube opening rocking member mounting structure according to the present modification has a second structure between the inclined portion 32S of the fixing projection 32 and the first inclined portion 11SA and the inclined portion 30S of the fitting portion 30A of the cap 30. The effect of the wedge with the inclined portion 11SB becomes stronger. As a result, the outer tube opening opening rocking member mounting structure according to the present modification can more firmly fix the outer tube opening rocking member 11d to the through hole 11H.

  FIG. 11 is a perspective view of the cap. As shown in FIG. 11, the cap 30 has a shape in which two cylinders having different diameters are connected to each other at their end faces. That is, a cylinder with a small diameter becomes the fitting portion 30A, and a cylinder with a larger diameter becomes the locking portion 30B. In this case, at least the shape of the through hole 11H of the outer tube 11 on the cap 30 side is circular. Note that the shape of the fitting portion 30A is not limited to a cylindrical shape. For example, shapes other than a cylinder, such as the shape of a polygonal column such as a quadrangular column or a hexagonal column, or the shape of an elliptical column may be used. In this case, the through hole 11H of the outer tube 11 is also shaped to match the shape of the fitting portion 30A. In this way, the fitting portion 30A is restricted from rotating in the through hole 11H, so that the fastening operation by the bolt 34 is facilitated, and the working efficiency is improved. Further, if the fitting portion 30A has a shape other than a cylinder, for example, a polygonal column shape, when the operator holds the cap 30 by hand, the fitting portion 30A exhibits a function of preventing slipping. Drop can be suppressed. As a result, work efficiency is improved.

  FIG. 12 is a perspective view showing a modified example of the cap. As for the cap 30a, the latching | locking part 30Ba has a hexagonal column shape. The fitting portion 30A has a cylindrical shape. Thus, by making the locking portion 30Ba into a hexagonal prism shape, when the operator holds the cap 30a by hand, the locking portion 30Ba exhibits a function of preventing slipping, and it is difficult to drop the cap 30a. There is an advantage. This advantage is advantageous when working in water. Note that the shape of the locking portion 30a is not limited to the hexagonal column shape, and even if it is a polygonal column shape such as a quadrangular column or a pentagonal column, the same actions and effects as when the hexagonal column shape is obtained. It is done.

  FIG. 13 is an enlarged view showing a mounting structure of an outer cylindrical tube opening rocking member included in a movable breakwater according to a modification of the present embodiment. In this mounting structure, the cap 30b has a projection 35 that protrudes from the side surface toward the radially outer side of the fitting portion 30b while the fitting portion 30Ab has a substantially cylindrical shape. Further, the through hole 11Hb has a groove 11HU in which the protrusion 35 fits. With such a structure, when the fitting portion 30Ab of the cap 30b is fitted into the through hole 11Hb, the protrusion 35 and the groove portion 11HU are fitted. As a result, the fitting portion 30Ab is restricted from rotating in the through hole 11Hb, so that the fastening operation of the bolt 34 is facilitated, and the working efficiency is improved.

  14 is an enlarged cross-sectional view taken along line BB in FIG. FIG. 14 shows a state where the movable breakwater according to the present embodiment has surfaced. As shown in FIG. 14, the levitating pipe 12 of the movable breakwater 10 is provided with reinforcing ribs 12f extending in the longitudinal direction (vertical direction) for further reinforcement at least with respect to the levitating pipe side upper reinforcing member 12c. Also good.

  15 is an enlarged cross-sectional view taken along the line BB in FIG. FIG. 15 shows a state where the movable breakwater according to the present embodiment is at the bottom of the water, that is, a state before rising. 16 is a view taken along the line CC in FIG. The movable breakwater 10 includes a levitating tube 12 with a charging device and a storage battery built therein. Although the charging device and the storage battery are not clearly shown in the figure, they are provided in the control device 20 described above. As shown in FIGS. 15 and 16, the movable breakwater 10 includes a power receiving unit 21 and a power transmitting unit 22.

  The power receiving unit 21 is provided in the levitation tube 12 and supplies power to the storage battery or performs transmission / reception in underwater communication. The power transmitter 22 is for transmitting power to the power receiver 21 when the levitation tube 12 is lowered, and for transmitting and receiving in underwater communication. The power receiving unit 21 and the power transmitting unit 22 face each other and transmit power and communication signals in a non-contact manner (for example, with a gap of about 30 mm exceeding 0 mm) using electromagnetic induction.

  The power transmission unit 22 is electrically connected to a power source (not shown) provided in the on-shore monitoring / control system facility 100. The power source transmits the alternating current as it is, or converts the direct current power source into alternating current by an inverter and sends it to the power transmission unit 22. The power transmission unit 22 includes a power supply side coil and a power supply circuit, and the power reception unit 21 includes a power reception side coil and a power reception circuit. That is, an induced electromotive force is generated in the power receiving side coil of the power receiving unit 21 due to a change in the magnetic field generated by an alternating current flowing in the power feeding side coil of the power transmitting unit 22, and the power transmitted from the power source without contact is controlled Transmit to 20 charging devices. As described above, the electric power transmission unit 22 converts electric energy into magnetic energy and transmits the electric energy, and the electric power reception unit 21 converts the magnetic energy into electric energy and transmits electric power in a non-contact manner. In addition, a charging device converts the electric power transmitted from the electric power receiving part 21 by alternating current into direct current, and charges a storage battery.

  The power transmission unit 22 is provided in the outer cylindrical tube 11 at a location where the side wall of the outer cylindrical tube 11 is cut out in a range embedded with the rubble 5 at a predetermined depth H1 from the water bottom GL. Specifically, the power transmission unit 22 is fixed to the outer cylinder pipe 11 via a bracket 22a reinforced with a rib or the like at a location where the side wall of the outer cylinder pipe 11 is cut out. For this reason, the electric power transmission part 22 will be arrange | positioned below the water bottom GL.

  The power receiving unit 21 is configured such that the side wall of the levitation tube 12 is cut out in a range below the upper end of the levitation tube 12 at the lowered position of the levitation tube 12 (the position where the upper end of the levitation tube 12 coincides with the bottom surface GL due to the lowering). The power transmission unit 22 is provided so as to be opposed to the power transmission unit 22. Specifically, the power receiving unit 21 is fixed to the levitation tube 12 via a bracket 21a reinforced with a rib or the like at a location where the side wall of the levitation tube 12 is cut away. For this reason, the power receiver 21 is disposed below the water bottom GL. The power receiving unit 21 is covered at the top by a lid 17 provided at the upper end of the levitation tube 12.

  Further, a portion indicated by reference numeral 23 in FIG. 16 is provided along the longitudinal direction on the outer wall of the levitation tube 12, and is fitted into the groove portion of the outer cylinder tube opening rocking member 11 d provided on the inner wall of the outer tube 11. Thus, the anti-rotation member prevents the floating tube 12 from rotating with respect to the outer tube 11. The rotation preventing member 23 determines the positions where the power receiving unit 21 and the power transmitting unit 22 face each other.

  FIG. 17 is an explanatory diagram of the construction process of the movable breakwater according to the present embodiment. In order to construct the movable breakwater 10 described above, as shown in FIG. 17, the outer tube 11 is an electric vibrator suspended by a crane 120 with the outer tube-side reinforcing members 11 b and 11 c being fixed. 121 is driven into the bottom E. At this time, the electric vibrator 121 cannot be lowered below the water surface WL, that is, cannot be immersed in water. For this reason, the YAGKO 122 is attached to the electric vibrator 121, and the outer tube 11 is gripped by the chuck portion 122a of the YATCO 122 and driven. In this placement, the portion gripped by the chuck portion 122a of the Yatco 122 is the upper end of the outer tube 11 and is in a range of a predetermined depth H1 from the water bottom GL after construction. When the outer tube 11 is driven, an introduction member (not shown) is attached to the carriage 123, and the outer member 11 is guided by this introduction member so as to be driven vertically.

  The bottom of the water into which the outer tube 11 is driven is dug up to a certain depth, for example, to a certain depth so that the outer tube tube opening rocking member 11d can be attached. The outer tube 11 is driven into this portion. When the driving of the outer tube 11 is completed, the outer tube opening opening rocking member 11 d is attached to the outer tube 11. Then, the installation of the outer cylinder pipe | tube 11 is complete | finished by filling the dug part with rubble etc.

  Thereafter, the levitation tube 12 to which all the components related to the levitation tube 12 are attached is suspended by the crane 120 and inserted into the outer tube 11. Thereafter, all the remaining components related to the outer tube 11 are attached to the outer tube 11. Thereafter, the rubble 5 is drawn around the outer tube 11 to embed the outer tube 11, and the construction of the movable breakwater 10 is finished. Although not clearly shown in the figure, a guide material may be installed in place of the carriage 123 and the outer tube 11 may be driven using the guide material.

  As described above, the movable breakwater 10 of the present embodiment is formed in a vertically long shape, and has an outer tube 11 that has an opening 11a on the water bottom side and is inserted and fixed in the water bottom ground E, and an outer tube. 11 and is movable in the longitudinal direction of the outer tube 11 and is provided with a levitation tube 12 provided so as to be able to rise by generating buoyancy with the gas supplied to the inside of the outer tube 11. It is a type breakwater 10. In the movable breakwater 10, the outer tube 11 has the opening 11a aligned with the water bottom GL, and the floating tube 12 is embedded in the outer tube 11 below the water bottom GL at a predetermined depth H1. A floating tube side upper reinforcing member 12c that receives a horizontal stress on the floating tube 12 at the ascending position is provided for the portion thus formed.

  According to the movable breakwater 10, the outer tube 11 is embedded at a predetermined depth H1 up to the opening 11a on the upper side of the outer tube-side upper reinforcing member 11b. It can be used as a grip allowance. Further, as described above, the outer cylinder tube opening rocking member 11d is attached to the outer tube 11 in water. For this reason, when the outer tube 11 is driven into the water bottom ground E, nothing is attached to the opening end 11T side. Therefore, the outer cylinder tube 11 can be used as a grip allowance for gripping the portion to which the outer cylinder tube opening rocking member 11 d is attached by the chuck portion 122 a of the YATCO 122.

  As a result, it is not necessary to remove the grip allowance, so that the construction work can be facilitated. In addition, in the levitation tube 12, the levitation tube side upper reinforcing member 12c that receives the horizontal stress at the ascending position is provided at a position having a predetermined depth H1 from the water bottom GL. Since it reinforces, cross-sectional strength becomes high. For this reason, it becomes possible to receive the stress of the horizontal direction to the levitation pipe 12 enough. Further, since the cross-sectional strength of the outer tube 11 is increased, the outer tube-side upper reinforcing member 11b is simplified, and it is not necessary to use a conventional diaphragm, so that the manufacturing cost and the construction cost at the site can be reduced. . As described above, according to the movable breakwater 10 of the present embodiment, it is possible to provide a reinforcing member that can easily perform the construction work and can sufficiently receive the horizontal stress on the floating pipe 12. .

  By the way, when arranging a plurality of movable breakwaters 10 as the movable breakwater facility 1, it is preferable to make the gap between the movable breakwaters 10 as small as possible in order to obtain the wavebreak performance. However, when a diaphragm that spreads in the radially outward direction is used as the outer tubular tube-side upper reinforcing member 11b, the gap between the movable breakwaters 10 becomes large, so that the diaphragm between the movable breakwaters 10 is cut out. In this case, the strength of the reinforcement is reduced, and the balance is inclined in a state where the outer tube 11 is suspended at the time of construction. In this respect, according to the movable breakwater 10 of this embodiment, since the cross-sectional strength of the outer tube 11 is increased, the outer tube-side upper reinforcing member 11b is downsized, and the steel plate is made ring-shaped as described above. Since it can be uniformly arranged in the circumferential direction of the outer tube 11, the gap between the movable breakwaters 10 can be made as small as possible, and since the outer tube 11 is hung during construction, the work can be done easily with a good balance. It becomes possible to do.

  In addition, the movable breakwater 10 of the present embodiment includes a levitating pipe 12 with an internal storage battery and a power receiving unit 21 for supplying electric power to the storage battery. The power transmission unit 22 transmits power to the power reception unit 21 at the lowered position. The power transmission unit 22 is disposed in a range embedded at a predetermined depth H1 from the water bottom surface GL of the outer tube 11, and the power reception unit 21 is descended so that the upper end of the floating tube 12 is aligned with the water bottom surface GL. At the position, it is arranged to face the power transmission unit 22 in a range below the upper end of the levitation tube 12.

  According to the movable breakwater 10, since the power receiving unit 21 and the power transmitting unit 22 are disposed below the water bottom surface GL at the descending position of the floating pipe 12, the power receiving unit 21 and the power transmitting unit 22 are arranged. Does not come into contact with throwing or the like and there is no risk of damage.

  Moreover, the movable breakwater facility 1 of this embodiment has a plurality of movable breakwaters 10 arranged on the water bottom.

  According to this movable wave-breaking facility 1, it is possible to provide a reinforcing member that can easily perform the construction work and can sufficiently receive the horizontal stress on the floating pipe 12. In particular, in the movable breakwater facility 1 in which a plurality of movable breakwaters 10 are arranged, it is preferable to make the gap between the movable breakwaters 10 as small as possible. In this respect, since the cross-sectional strength of the outer tube 11 is increased in the movable breakwater 10, the outer tube-side upper reinforcing member 11b is downsized, and the steel plate is formed in a ring shape as described above to surround the outer tube 11. Since it can arrange | position uniformly in a direction, it becomes possible to make the clearance gap between the movable breakwaters 10 as small as possible.

DESCRIPTION OF SYMBOLS 1 Movable breakwater facility 5 Rubble 10 Movable breakwater 11 Outer tube 11H, 11Ha, 11Hb Through-hole 11I Inner wall 11O Outer wall 11SA First inclined part 11SB Second inclined part 11a Opening part 11b Outer tube side upper reinforcement member (outer (Cylinder tube side reinforcing member)
11c Outer tube side lower reinforcing member (outer tube side reinforcing member)
11d Outer tube opening rocking member 11e Outer tube upper edge rocking member 12 Floating tube 12a Opening portion 12b Stopper 12c Levitation tube side upper reinforcing member (floating tube side reinforcing member)
12d Levitation tube side lower reinforcement member (levitation tube side reinforcement member)
12e Floating tube lower end rocking member 12f Reinforcement rib 21 Power receiving part 21a Bracket 22 Power transmitting part 22a Bracket 23 Anti-rotation member 30, 30a, 30b Cap 30A Insertion part 30B, 30Ba Locking part 31 Bolt hole 32 Fixing part 33 Projection part 34 Bolt 35 Projection 120 Crane 121 Electric vibrator 122 Yatco 122a Chuck part H1 Predetermined depth from water bottom E Water bottom ground GL Water bottom WL Water surface

Claims (5)

An outer tube formed in a vertically long shape, having an opening on the bottom side and being inserted and fixed in the bottom floor;
A plurality of through holes provided on the opening side of the outer tube,
A levitation tube that is inserted into the outer cylindrical tube and is arranged to be movable up and down in the longitudinal direction of the outer cylindrical tube, and is provided so as to be able to rise by generating buoyancy with the gas supplied to itself,
While having a curved surface shaped along the shape of the inner wall that becomes the inner edge of the opening of the outer tube, the outer tube tube opening rocking member provided on the inner wall,
A fixing projection provided on the outer surface of the curved surface of the outer cylinder tube opening rocking member, and fitted into the through-hole to fix the outer tube tube opening rocking member to the outer tube;
A cap fitted into the through hole from the outside of the outer tube,
A fastening member for fastening the fixing protrusion and the cap;
Only including,
The movable breakwater , wherein the fastening member does not protrude from an inner surface of the outer tubular tube opening rocking member .   2. The movable breakwater according to claim 1, wherein the outer tube opening rocking member has at least three protrusions protruding from the curved surface outside the curved surface.   3. The movable breakwater according to claim 1, wherein the outer cylinder pipe opening rocking member has an outer cylinder pipe upper end rocking member that engages with an end surface of the outer cylinder pipe on the opening side. The levitation tube includes a storage battery and has a power reception unit for supplying power to the storage battery, and the outer tube transmits power to the power reception unit at a lowered position of the levitation tube. Have a transmitter,
The power transmission unit is disposed in a range embedded at a predetermined depth from the water bottom of the outer tube,
The power reception unit is arranged to face the power transmission unit in a range below the upper end of the levitation tube at a lowered position where the upper end of the levitation tube coincides with the water bottom surface. 4. The movable breakwater according to any one of 3 above.   A movable breakwater facility, wherein a plurality of the movable breakwaters according to any one of claims 1 to 4 are arranged on the bottom of the water.

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