JP2021035817A - Floating body coupling device and floating body transportation method - Google Patents

Abstract

To easily couple a plurality of floating bodies and to suppress damage to the floating bodies by sagging and hogging when being towed.SOLUTION: A pair of supporting members 2 of a floating body coupling device 1 sandwiches a plurality of floating bodies 9 arrayed in an array direction from a front side and a back side of the array direction. A connection unit 3 couples the plurality of floating bodies 9 in the array direction between the pair of supporting members 2 by separably connecting between the pair of supporting members 2. Thus, the plurality of floating bodies 9 are easily coupled and damage to the floating bodies 9 by sagging and hogging when being towed is capable of being suppressed.SELECTED DRAWING: Figure 9

Description

The present invention relates to a floating body connecting device and a floating body carrying method.

Conventionally, when transporting a large floating structure from a factory to an installation site, the structure itself is floated and towed without using a pontoon. In this case, a method of reducing the cost required for transportation has been proposed by connecting and towing a plurality of floating bodies (structures). For example, Patent Document 1 discloses a method in which a plurality of single caissons are connected via a joint member on a temporary mound provided in a calm sea area, and the connected long caissons are towed to a predetermined installation position. Has been done. In Patent Document 1, a PC cable is wired in a sheath tube laid over a plurality of boxes, and the caissons are connected by the PC cable.

In addition, Patent Document 2 discloses a detachable anti-rolling device. In the device, a steel frame member that is fitted around the structure with a predetermined play is used. A keel is provided on the outside of the frame member, and a hollow rubber tube that can be expanded and contracted is provided on the inside of the frame member. The device is easily attached to the structure by fitting the frame member into the structure with the rubber tube narrowed and inflating the rubber tube. In addition, the action of the keel suppresses the shaking of the structure.

Japanese Unexamined Patent Publication No. 10-237875 Utility Model Registration No. 3043406

By the way, in Patent Document 1, a plurality of floating bodies are connected by a PC cable, but it is necessary to lay a sheath tube for wiring the PC cable over the plurality of floating bodies, and a special design relating to the connection of the plurality of floating bodies is required. And construction is required. Further, in Patent Document 1, the end portion of the PC cable is arranged inside the floating body, and the connecting work becomes complicated.

On the other hand, when the length of a plurality of connected floating bodies becomes as long as the wavelength of a wave, a phenomenon called sagging and hogging occurs. In this case, for example, when adjacent floating bodies are firmly fixed and integrated, a large tensile force acts on the lower surface of the floating body in sagging, and a large tensile force acts on the upper surface of the floating body in hogging. Since a floating body such as a caisson is weak in tensile force, the floating body may be damaged.

The present invention has been made in view of the above problems, and an object of the present invention is to easily connect a plurality of floating bodies and to suppress damage to the floating bodies due to sagging and hogging during towing.

The invention according to claim 1 is a floating body connecting device, in which a pair of support members sandwiching a plurality of floating bodies arranged in an arrangement direction from the front side and the rear side in the arrangement direction and a pair of support members are sandwiched between the pair of support members. By connecting the pair of support members in a separable manner, the pair of support members are provided with a connecting portion for connecting the plurality of floating bodies in the arrangement direction.

The invention according to claim 2 is the floating body connecting device according to claim 1, wherein the connecting portion connects the plurality of floating bodies while compressing them in the arrangement direction.

The invention according to claim 3 is the floating body connecting device according to claim 1 or 2, wherein the connecting member between the pair of supporting members faces the outer surface of the plurality of floating bodies at the connecting portion.

The invention according to claim 4 is the floating body connecting device according to any one of claims 1 to 3, further comprising a float portion fixed to each support member.

The invention according to claim 5 is the floating body connecting device according to claim 4, wherein the float portion fixed to one of the support members has a pair of floats, and the pair of floats is one of the floats. It is an airfoil that is arranged on both sides in the width direction perpendicular to the support member and has a cross-sectional shape perpendicular to the width direction of each float including an upper surface facing upward and a lower surface facing downward. In towing in the direction along the arrangement direction, when each of the floats descends in water, the pressure on the lower surface side of each float becomes larger than the pressure on the upper surface side.

The invention according to claim 6 is the floating body connecting device according to any one of claims 1 to 5, which is fixed to one support member and has the arrangement direction with respect to the one support member. A pair of anti-sway blades arranged on both sides in the width direction perpendicular to the above are further provided, and in towing in the direction along the arrangement direction, the pair of anti-sway blades are arranged in water, and each anti-sway blade is underwater. When descending at, the pressure on the lower surface side of each of the damping blades becomes larger than the pressure on the upper surface side.

The invention according to claim 7 is the floating body connecting device according to any one of claims 1 to 6, wherein each of the plurality of floating bodies is a caisson.

The invention according to claim 8 is the floating body connecting device according to any one of claims 1 to 7, wherein an intermediate member arranged between two floating bodies adjacent to each other in the plurality of floating bodies is provided. Further provided, the intermediate member includes a misalignment limiting portion that limits the misalignment of the relative positions of the two floating bodies in the width direction and / and the vertical direction perpendicular to the arrangement direction.

The invention according to claim 9 is a method for transporting a floating body, wherein a plurality of floating bodies are connected at a predetermined connection position by using the floating body connecting device according to any one of claims 1 to 8. A step of towing the plurality of floating bodies and transporting them from the connecting position to the installation position, a step of disconnecting the connection between the pair of support members by the connecting portion of the floating body connecting device at the installation position, and the above-mentioned A step of towing a pair of support members and transporting the pair of support members to a predetermined position away from the installation position is provided.

According to the present invention, a plurality of floating bodies can be easily connected, and damage to the floating bodies due to sagging and hogging during towing can be suppressed.

It is a front view which shows the floating body connecting device which concerns on 1st Embodiment. It is a side view which shows the floating body connecting device. It is a top view which shows the floating body connecting device. It is sectional drawing which shows the float. It is a figure which shows the facing surface of a caisson. It is a figure which shows the flow of the process which carries a plurality of caissons to an installation position. It is a figure which shows the state of towing a plurality of caissons and a floating body connecting device. It is a figure for demonstrating the connection method of the comparative example. It is a figure for demonstrating the influence of hogging in a plurality of caissons connected using a floating body connecting device. It is a figure which shows the floating body connecting device at the time of towing. It is a figure which shows another example of a floating body coupling device. It is a front view which shows the floating body connecting device which concerns on 2nd Embodiment. It is a side view which shows the floating body connecting device. It is a top view which shows the floating body connecting device. It is a figure which shows the facing surface and the intermediate member of a caisson. It is a figure which shows the horizontal frame material and the contact part of an intermediate member. It is a figure which shows another example of a floating body coupling device. It is a figure which shows another example of a floating body coupling device. It is a figure which shows another example of a floating body coupling device.

FIG. 1 is a front view showing a floating body connecting device 1 according to the first embodiment of the present invention. FIG. 2 is a side view showing the floating body connecting device 1, and FIG. 3 is a plan view showing the floating body connecting device 1. The floating body connecting device 1 is a device for connecting a plurality of caissons 9 which are floating bodies. As will be described later, the plurality of caissons 9 connected by using the floating body connecting device 1 are towed by a towing ship and transported to a predetermined installation position. The caisson 9 in the present embodiment is, for example, a hybrid caisson having a composite structure of steel and concrete, and is typically a substantially rectangular parallelepiped box with an open top. The plurality of caissons 9 are installed on a base provided on the seabed and used as a breakwater or the like, for example.

The floating body connecting device 1 includes a pair of support members 2 and a connecting portion 3. The pair of support members 2 sandwich a plurality of caissons 9 arranged in the arrangement direction from the front side and the rear side in the arrangement direction. Each support member 2 contacts a surface 91 facing outward in the arrangement direction (a surface 91 facing opposite to the adjacent caisson 9) at the caisson 9 located at the end in the arrangement direction. In the present embodiment, as will be described later, since the surface 91 is pressed by the support member 2, it is hereinafter referred to as “pressed surface 91”. The pressed surface 91 extends in the vertical direction and the horizontal direction (hereinafter, referred to as “vertical direction” and “width direction”, respectively) in FIG. 1 perpendicular to the arrangement direction. In FIGS. 1 to 3, the X, Y, and Z directions orthogonal to each other are indicated by arrows, and the X, Y, and Z directions indicate the arrangement direction, the width direction, and the vertical direction, respectively (other drawings). Same as above).

Each support member 2 is, for example, a rectangular frame made of metal or the like. As shown in FIG. 1, the support member 2 includes two vertical frame members 21 extending in the vertical direction (Z direction) and two horizontal frame members 22 extending in the width direction (Y direction) perpendicular to the vertical direction. To be equipped. The two vertical frame members 21 are arranged parallel to each other. Both ends of one of the horizontal frame members 22 are connected to the upper ends of the two vertical frame members 21. Both ends of the other horizontal frame member 22 are connected to the lower ends of the two vertical frame members 21. In the example of FIG. 1, a float support portion 42 extending in the width direction, which will be described later, is fixed to two vertical frame members 21, and the connection position between the float support portion 42 and the vertical frame member 21 and the vertical frame member 21 A brace is provided to connect the connection position with the horizontal frame member 22 and the connection position. The shape of each support member 2 is not limited to a rectangle, and may be changed to an arbitrary shape such as an isosceles trapezoid.

An engaging portion 231 and an abutting portion 232 are provided at the upper end portion and the lower end portion of each vertical frame member 21, respectively. The engaging portion 231 and the contact portion 232 are provided on the surface of the vertical frame member 21 facing outward in the width direction. As shown in FIG. 2, the engaging portion 231 in each support member 2 is a U-shaped member that opens toward the other support member 2 side, and is spaced vertically in the arrangement direction (X direction). It has two extending parts. In the caisson 9 (that is, the caisson 9 located at the end in the arrangement direction) with which the support member 2 comes into contact, a protrusion 921 is provided on the side surface 92 facing the width direction. The engaging portion 231 faces the side surface 92 of the caisson 9, and the protrusion 921 is arranged between the two portions. This prevents the position of the support member 2 from being significantly displaced from the caisson 9 in the vertical direction.

The contact portion 232 in each support member 2 is a member that projects toward the other support member 2 side. The contact portion 232, like the engaging portion 231, faces the side surface 92 of the caisson 9 located at the end in the arrangement direction. By providing the engaging portion 231 and the abutting portion 232 on both sides of the support member 2 in the width direction, that is, on each of the two vertical frame members 21, the support member 2 in the width direction is provided with respect to the caisson 9. It prevents the position from shifting significantly. The shapes of the engaging portion 231 and the contact portion 232 may be arbitrarily changed.

A fixing portion 24 is provided on the surface of each of the engaging portion 231 and the abutting portion 232 facing outward in the width direction. As shown in FIG. 1, in each support member 2, four fixing portions 24 are provided at the upper end portion and the lower end portion of the two vertical frame members 21, respectively. The four fixing portions 24 on one support member 2 face each other in the arrangement direction with the four fixing portions 24 on the other support member 2. That is, each fixing portion 24 of one support member 2 corresponds to any one fixing portion 24 of the other support member 2.

The connecting portion 3 includes a plurality of connecting members 31. The connecting member 31 is typically a PC (prestressed concrete) steel material, and is a PC steel wire, a PC steel rod, or a PC cable (PC steel stranded wire). The connecting member 31 may be a tension material other than the PC steel material. In the present embodiment, the connecting member 31 is a PC cable, and four connecting members 31 are used. One end of the four connecting members 31 is detachably fixed (fixed) to the four fixing portions 24 of the one supporting member 2, and the other end is detachably attached to the four fixing portions 24 of the other supporting member 2. Is fixed to. In this way, the pair of support members 2 are separably connected by the connecting portion 3.

Actually, both ends of each connecting member 31 are fixed to two fixing portions 24 facing each other in the arrangement direction in a tense (pulled) state. As a result, the plurality of caissons 9 are connected in the arrangement direction while each support member 2 presses the pressed surface 91 of the caisson 9 located at the end in the arrangement direction. A compressive force in the arrangement direction is applied to the plurality of caissons 9 between the pair of support members 2. Since the pair of support members 2, the facing surfaces 93 to be described later facing each other in the adjacent caisson 9, and the pressed surface 91 of the end caisson 9 are parallel to each other, the plurality of caissons 9 are firmly connected. Each connecting member 31 is arranged outside the plurality of caissons 9. In the example of FIG. 2, each connecting member 31 faces the side surface 92 of the plurality of caissons 9 facing the width direction. The number of connecting members 31 facing each side surface 92 may be one or three or more. If the compressive force in the arrangement direction is appropriately applied to the plurality of caissons 9, the connecting member 31 is arranged in the arrangement direction (X direction) when viewed along the width direction as shown in FIG. It may be inclined with respect to the surface, or two connecting members 31 provided facing the same side surface 92 may intersect with each other. Further, when viewed along the vertical direction as shown in FIG. 3, the connecting member 31 may be slightly inclined with respect to the arrangement direction.

As shown in FIG. 1, a float portion 4 is fixed to each support member 2. The float portion 4 includes a pair of floats 41 and a float support portion 42. The float support portion 42 has a rod shape extending in the width direction, and is fixed to the two vertical frame members 21 of the support member 2. The pair of floats 41 are attached to both ends of the float support portion 42, respectively. That is, the pair of floats 41 are arranged on both sides in the width direction with respect to the support member 2. In the example of FIG. 1, an auxiliary support portion 43 for connecting the lower end portion of the vertical frame member 21 and the float 41 is also provided, and the float 41 is firmly supported by the float support portion 42 and the auxiliary support portion 43. The positions of the float support portion 42 and the float 41 in the vertical direction are set according to the draft of the caisson 9.

FIG. 4 is a cross-sectional view showing the float 41, showing a cross section in a plane perpendicular to the width direction. In FIG. 4, the parallel diagonal lines showing the cross sections are not shown. The cross-sectional shape of the float 41 perpendicular to the width direction is an airfoil including an upper surface 411 facing upward and a lower surface 412 facing downward. The upper surface 411 and the lower surface 412 in the cross section of FIG. 4 are curved. The upper surface 411 is convex upward, and the lower surface 412 is convex downward. As will be described later, when the floating body connecting device 1 is towed, when a flow is generated with respect to the float 41 in the direction indicated by the arrow A1 in FIG. 4, the pressure on the lower surface 412 side is larger than the pressure on the upper surface 411 side. Become. As a result, the lift indicated by the arrow A2 and the drag force indicated by the arrow A3 are generated. In the example of FIG. 4, the float 41 is composed of only the upper surface 411 and the lower surface 412, but may have other surfaces in addition to the upper surface 411 and the lower surface 412. In the float 41, if the pressure on the lower surface 412 side is larger than the pressure on the upper surface 411 side, the float 41 is not limited to a general airfoil, and various shapes may be adopted.

FIG. 5 is a diagram showing a surface 93 of the caisson 9 facing the other caisson 9 (hereinafter, referred to as “opposing surface 93”). The facing surface 93 is a surface facing the arrangement direction (X direction) and does not face the support member 2. A plurality of shearing keys 931 are provided in the lower portion of the facing surface 93 in an arrangement in the width direction (Y direction). Each shearing key 931 has a convex plate provided with a convex portion and a concave plate provided with a concave portion. When viewed along the arrangement direction, the outer shape of the convex portion is smaller than the outer shape of the concave portion. In the plurality of caissons 9 arranged in the arrangement direction, the convex plate is fixed to one of the facing surfaces 93 facing each other, and the concave plate is fixed to the other. For example, bolts are used to fix the convex plate and the concave plate. In the state where the plurality of caissons 9 are connected, the convex portion is inserted into the concave portion in a state where it can be moved by a certain distance in the vertical direction (Z direction) and the width direction. This prevents the two caissons 9 adjacent to each other in the arrangement direction from being significantly displaced in the width direction and the vertical direction.

A plurality of cushioning materials 932 are provided in an arrangement in the vertical direction at the end portion of the facing surface 93 in the width direction. The cushioning material 932 is formed, for example, by pouring mortar into the inside of a rectangular frame-shaped sponge member fixed to the facing surface 93. Further, two PC cables 51 extending in the width direction are provided between the two caissons 9 adjacent to each other in a vertically separated state. Each PC cable 51 is fixed at both ends to two side plates 52 in a slightly tense (pulled) state. As shown in FIGS. 2 and 3, in the two caissons 9, one side plate 52 is in contact with two side surfaces 92 facing one side in the width direction, and the two side surfaces 92 facing the other side in the width direction are in contact with each other. The other side plate 52 comes into contact. The side plate 52 is not fixed to the side surface 92. The PC cable 51 prevents the two caissons 9 from shifting in the width direction. The PC cable 51 is an intermediate member arranged between two caissons 9 adjacent to each other, and the two side plates 52 are position shift limiting portions that limit the shift of the relative positions of the two caissons 9 in the width direction. Is. The structure and arrangement of the shear key 931, the cushioning material 932, and the PC cable 51 may be appropriately modified, and these configurations may be omitted.

FIG. 6 is a diagram showing a flow of processing for transporting a plurality of caissons 9 to an installation position using the floating body connecting device 1. In the transportation process of the caisson 9, first, a plurality of caissons 9 are prepared (step S11). In the preparation of the caisson 9, for example, a steel shell block is manufactured in a factory, and the steel shell block is transported to the dock. In the dock, steel shells are produced by welding and integrating the steel shell blocks. After that, the caisson 9 is manufactured by arranging reinforcements and placing concrete on the bottom slab and the outer wall. Each caisson 9 is a substantially rectangular parallelepiped box with an open top. Inside the caisson 9, for example, a flat bar and H-steel are provided so as to intersect each other (see FIG. 3). In this embodiment, the plurality of caissons 9 have substantially the same shape. Of course, the shapes of the plurality of caissons 9 may be different from each other.

When a plurality of caissons 9 are prepared, the plurality of caissons 9 are arranged in the arrangement direction in the dock, and a pair of support members 2 are arranged on the front side and the rear side in the arrangement direction. At this time, a plurality of shearing keys 931 and a plurality of cushioning materials 932 are provided between the two adjacent caissons 9, and a PC cable 51 having a side plate 52 is further arranged. Subsequently, one end of each connecting member 31 is fixed to the fixing portion 24 in one supporting member 2, and then the other end is fixed to the corresponding fixing portion 24 in the other supporting member 2 while the connecting member 31 is in a tense state. It is fixed. In this way, using the floating body connecting device 1, a plurality of caissons 9 are connected in the arrangement direction in the dock at the connecting position (step S12). In the following description, the plurality of caisson 9s and the floating body connecting device 1 that are connected are collectively referred to as "caisson-device connecting body".

When a plurality of caissons 9 are connected, the caisson-device connector (the plurality of caissons 9 and the floating body coupling device 1) is floated on the water surface by allowing water (seawater) to enter the dock. As shown in FIG. 7, the caisson-device connector is connected to the towing vessel 8 via the towing line 81 and is taken out of the dock. The towing vessel 8 is a towing vessel (so-called tugboat) that pulls the caisson-device connection. The towing vessel 8 includes a propeller connected to a power source such as a prime mover or a generator. The caisson-device connector is not provided with a thruster.

The towing vessel 8 towes the caisson-device connector in the towing direction indicated by the arrow D1 in FIG. At this time, the lower part of the caisson-device connection is located below the water surface (for example, the sea surface) away from the water bottom (for example, the seabed), and the upper part of the caisson-device connection protrudes upward from the water surface. There is. The caisson-device connector is transported from the dock to the installation position (step S13).

At the installation position, the fixing between each connecting member 31 and the fixing portion 24 of at least one support member 2 is released. In other words, the connection between the pair of support members 2 by the connecting portion 3 in the floating body connecting device 1 is released (step S14). As a result, the plurality of caissons 9 are removed from the floating body connecting device 1 and are in a non-connected state. After the plurality of caissons 9 are positioned by a predetermined method, they are sunk one by one by injecting water into the inside and pouring sand in the filling. As a result, the caisson 9 is installed in the installation position.

On the other hand, since the float portion 4 is fixed to each support member 2, when the connection between the pair of support members 2 is released, both support members 2 are in a state of floating on the water surface. The pair of support members 2 are connected to each other using, for example, a connecting member 31. Then, the pair of support members 2 are towed by the towing vessel 8 and transported to a predetermined position (for example, a dock) away from the installation position (step S15). As described above, the transportation process of the plurality of caissons 9 using the floating body connecting device 1 is completed.

Here, a connection method of a comparative example that does not use the floating body connecting device 1 will be described. FIG. 8 is a diagram for explaining a connection method of a comparative example. In the connection method of the comparative example, the side surfaces 92 of the two caissons 9 adjacent to each other in the arrangement direction (X direction) are fixed by the plate member 99, and the plurality of caissons 9 are integrated. In this case, when the water surface W is in the state shown in FIG. 8 and hogging occurs, a large compressive force acts on the lower surface of the central caisson 9 (see arrow B1 in FIG. 8), and the upper surface of the caisson 9 is affected. A large tensile force (see arrow B2 in FIG. 8) acts. Further, when sagging occurs, a large compressive force acts on the upper surface of the central caisson 9, and a large tensile force acts on the lower surface of the caisson 9. Like the caisson 9, a concrete product is strong in compressive force but weak in tensile force, so that the caisson 9 may be damaged during towing.

FIG. 9 is a diagram for explaining the effect of hogging on a plurality of caissons 9 connected by using the floating body connecting device 1. In the plurality of caissons 9 connected by using the floating body connecting device 1, the caissons 9 adjacent to each other in the arrangement direction are not fixed to each other. Therefore, when hogging occurs, a large compressive force acts on the lower surface of the central caisson 9 (see arrow B3 in FIG. 9), but a large tensile force does not act on the upper surface of the caisson 9. Similarly, when sagging occurs, a large compressive force acts on the upper surface of the central caisson 9, but a large tensile force does not act on the lower surface of the caisson 9. Therefore, by using the floating body connecting device 1, it is possible to prevent the caisson 9 from being damaged during towing.

As described above, in the floating body connecting device 1, a plurality of caissons 9 arranged in the arrangement direction are sandwiched by a pair of support members 2 from the front side and the rear side in the arrangement direction. Further, a plurality of caissons 9 are connected while being compressed in the arrangement direction between the pair of support members 2 by the connecting portion 3 that separably connects the pair of support members 2. As a result, the plurality of caissons 9 can be easily connected without performing special design and construction such as laying a sheath pipe for the plurality of caissons 9. Further, the connection and disconnection of the plurality of caisson 9s, that is, the connection and disconnection of the connection member 31 between the pair of support members 2 can be performed outside the caisson 9 (fixing portion 24 in the support member 2). The caisson 9 can be easily transported and installed using the floating body connecting device 1. Further, since the caissons 9 are not fixed to each other, damage to the caissons 9 due to sagging and hogging during towing can be suppressed.

In the floating body connecting device 1, the connecting member 31 between the pair of supporting members 2 faces the outer surface of the plurality of caissons 9, that is, the surface not covered by other parts of the caisson 9. Thereby, the work of attaching the connecting member 31 and the work of removing the connecting member 31 between the pair of support members 2 can be easily performed. The connecting members 31 facing the outer surface of the plurality of caissons 9 are not limited to those located in the normal direction of the outer surface. For example, in the caisson 9 of FIG. 1, a connection is arranged at a position separated in the (+ Y) direction and the (+ Z) direction from the corner where the outer surface facing the (+ Z) direction and the outer surface facing the (+ Y) direction are connected. The member 31 (that is, the connecting member 31 obliquely upward from the corner) is also included in the connecting member 31 facing the outer surface of the plurality of caissons 9. Depending on the design of the floating body connecting device 1, as shown by the alternate long and short dash line in FIG. 7, some connecting members 31 may face the outer surface facing the (+ Z) direction. In the example of FIG. 7, two connecting members 31 facing the outer surface facing the (+ Z) direction intersect.

Further, by fixing the float portion 4 to each support member 2 that does not float on water by itself, it is possible to prevent the support member 2 removed from the plurality of caissons 9 from sinking in water, and the support member 2 can be easily recovered. be able to. Since the float 41 of the float portion 4 has an airfoil shape, it is possible to reduce the fluid resistance acting in the direction opposite to the towing direction D1.

Next, the vibration caused by the float portion 4 at the time of towing will be described. FIG. 10 is a diagram showing a floating body connecting device 1 at the time of towing. When towing the caisson-device connector in the towing direction along the arrangement direction (X direction), the caisson-device connector rolls and floats as shown by the alternate long and short dash line in FIG. One float 41 in the part 4 descends in water in the direction indicated by the arrow D2. In this case, a flow relative to the float 41 occurs in the direction indicated by the arrow A1 in FIG. The arrow D1 in FIG. 4 is the towing direction. At this time, in the float 41, the pressure on the lower surface 412 side becomes larger than the pressure on the upper surface 411 side, the lift indicated by the arrow A2 is generated, and the downward movement of the float 41 is suppressed. Therefore, the floating body connecting device 1 having the float portion 4 can suppress rolling during towing. Further, as shown by the arrow A4 in FIG. 4, the lift indicated by the arrow A2 includes a component of the force acting in the towing direction D1. This makes it possible to further reduce the fluid resistance of the float 41.

FIG. 11 is a diagram showing another example of the floating body connecting device 1. In the floating body connecting device 1 of FIG. 11, a vibration damping portion 4a is provided in place of the float portion 4 of the floating body connecting device 1 of FIG. Other configurations are the same as those of the floating body connecting device 1 of FIG. 1, and the same configurations are designated by the same reference numerals.

The anti-sway portion 4a includes a pair of anti-sway blades 44 and an anti-sway blade support portion 45. The anti-sway blade support portion 45 has a rod shape extending in the width direction (Y direction) and is fixed to two vertical frame members 21 of the support member 2. The pair of anti-sway blades 44 are attached to both ends of the anti-sway blade support portion 45, respectively. In this way, the pair of anti-sway blades 44 are fixed to the support member 2 in a state of being arranged on both sides in the width direction with respect to the support member 2. The shape of the anti-sway blade 44 is the same as that of the float 41 of FIG. That is, the cross-sectional shape of the anti-sway blade 44 perpendicular to the width direction is an airfoil including an upper surface facing upward and a lower surface facing downward. As a result, the anti-sway blade 44 can reduce the fluid resistance acting in the direction opposite to the towing direction.

When towing the caisson-device connector in the towing direction along the arrangement direction (X direction), as shown in FIG. 11, the pair of anti-sway blades 44 are arranged in water, that is, below the water surface W. To. When the rolling of the caisson-device coupling causes one of the damping blades 44 in the damping portion 4a to descend in water in the direction indicated by the arrow D2, as shown by the alternate long and short dash line in FIG. 11, FIG. Similar to the float 41 described with reference to the above, the pressure on the lower surface side becomes larger than the pressure on the upper surface side, and lift (see arrow A2 in FIG. 4) is generated. As a result, the downward movement of the anti-sway blade 44 is suppressed. In this way, the floating body connecting device 1 having the anti-sway portion 4a can suppress rolling during towing. Further, the lift includes a component of the force acting on the towing direction D1 (see arrow A4 in FIG. 4). This makes it possible to further reduce the fluid resistance of the anti-sway blade 44.

In the floating body connecting device 1 of FIG. 11, since the support member 2 floats on water by itself, the support member 2 sinks when each of the support members 2 is separated from the caisson 9 after being transported to the installation positions of the plurality of caissons 9. There is no such thing. If necessary, such as when the support member 2 does not float on water, both the anti-vibration portion 4a and the float portion 4 may be provided on the support member 2. Further, the anti-sway portion 4a may be fixed to only one of the support members 2 (the same applies to the float portion 4).

FIG. 12 is a front view showing a floating body connecting device 1a according to a second embodiment of the present invention. FIG. 13 is a side view showing the floating body connecting device 1a, and FIG. 14 is a plan view showing the floating body connecting device 1a. In the floating body connecting device 1a, the float portion 4 is omitted and the structure of the support member 2 is different from that of the floating body connecting device 1 of FIG. Further, a frame-shaped intermediate member 6 is provided between the two caissons 9 adjacent to each other in place of the PC cable 51, the shear key 931 and the cushioning material 932 (see FIG. 5). Other configurations are the same as those of the floating body connecting device 1 of FIG. 1, and the same configurations are designated by the same reference numerals. Of course, the float portion 4 or the anti-vibration portion 4a may be provided on the support member 2 and the intermediate member 6 of the floating body connecting device 1a.

Each support member 2 faces an outwardly facing surface 91 of the caisson 9 located at the end in the arrangement direction (X direction). The support member 2 includes a plurality of vertical frame members 21 and a plurality of horizontal frame members 22, and in the example of FIG. 12, the support member 2 includes two vertical frame members 21 and five horizontal frame members 22. The two vertical frame members 21 are arranged near both ends in the width direction on the surface 91 and extend in the vertical direction (Z direction). The five horizontal frame members 22 extend along the width direction (Y direction), and both ends of each horizontal frame member 22 are connected to the two vertical frame members 21, respectively. In the example of FIG. 12, the uppermost horizontal frame member 22 is provided so as to be inclined with respect to the width direction according to the shape of the surface 91. As described above, the shape of each support member 2 may be changed to an arbitrary shape, and the number of the vertical frame member 21 and the horizontal frame member 22 may be changed arbitrarily. Further, the support member 2 may be provided with a brace.

A plurality of cushioning materials 211 are provided on the surface of each vertical frame material 21 on the caisson 9 side. In FIG. 12, parallel diagonal lines are provided on the cushioning material 211. The cushioning material 211 has a plate shape and is formed of an elastic material such as rubber. The support member 2 comes into contact with the surface 91 of the caisson 9 via the cushioning material 211.

Fixing portions 24 are provided at both ends of the uppermost horizontal frame member 22 and both ends of the lowermost horizontal frame member 22. Each support member 2 is provided with four fixing portions 24. The four fixing portions 24 on one support member 2 face each other in the arrangement direction with the four fixing portions 24 on the other support member 2. Similar to the floating body connecting device 1, both ends of the connecting member 31 of the connecting portion 3 are detachably fixed to the two fixing portions 24 facing each other in the pair of supporting members 2 (see FIGS. 13 and 14). ).

As shown in FIG. 12, rope holding portions 24a for towing rope 81 are provided at both ends of the horizontal frame member 22 located substantially in the center in the vertical direction. Each support member 2 is provided with two rope holding portions 24a. The two rope holding portions 24a in one support member 2 face each other in the arrangement direction with the two rope holding portions 24a in the other support member 2. Each rope holding portion 24a is provided with a through hole, and when towing a caisson-device connecting body (a plurality of caisson 9s and a floating body connecting device 1a), the towing rope 81 is inserted into the through hole.

A contact portion 23a is provided at each end of the two vertical frame members 21. Further, a contact portion 23b is provided at each end of the two horizontal frame members 22 that are not provided with the fixing portion 24 and the rope holding portion 24a. As shown in FIGS. 13 and 14, the contact portions 23a and 23b are members (brackets) that project toward the other support member 2 side. The contact portions 23a at both ends of the vertical frame member 21 face the upper surface 94 and the lower surface 95 of the caisson 9 located at the ends in the arrangement direction, respectively. This prevents the position of the support member 2 from being significantly displaced from the caisson 9 in the vertical direction. The abutting portions 23b at both ends of the horizontal frame member 22 face each other on both side surfaces 92 of the caisson 9. This prevents the position of the support member 2 from being significantly displaced from the caisson 9 in the width direction.

In the floating body connecting device 1a, the intermediate member 6 is arranged between two caissons 9 adjacent to each other in the plurality of caissons 9. When two caissons 9 adjacent to each other are referred to as adjacent caisson pairs, an intermediate member 6 is arranged between the adjacent caisson pairs. FIG. 15 is a diagram showing a surface 93 of the caisson 9 facing the other caisson 9 (that is, the facing surface 93), and also shows an intermediate member 6 provided on the facing surface 93.

Each intermediate member 6 has substantially the same shape as, for example, the support member 2. The intermediate member 6 includes a plurality of vertical frame members 61 and a plurality of horizontal frame members 62, and in the example of FIG. 15, includes two vertical frame members 61 and five horizontal frame members 62. A plurality of cushioning materials 611 are provided on both side surfaces of each vertical frame member 61 in the arrangement direction. The intermediate member 6 comes into contact with the caissons 9 on both sides in the arrangement direction via the cushioning material 611. Connecting member holding portions 64 are provided at both ends of the uppermost horizontal frame member 62 and both ends of the lowermost horizontal frame member 62. As shown in FIGS. 13 and 14, each connecting member holding portion 64 is arranged between two fixing portions 24 facing each other in the pair of supporting members 2, and is attached to the two fixing portions 24 in the arrangement direction. opposite. A through hole is provided in the connecting member holding portion 64, and when connecting a plurality of caissons 9, the connecting member 31 is inserted into the through hole.

As shown in FIG. 15, rope holding portions 64a for towing rope 81 are provided at both ends of the horizontal frame member 62 located substantially in the center in the vertical direction. Each intermediate member 6 is provided with two rope holding portions 64a. As shown in FIG. 13, each rope holding portion 64a is arranged between two rope holding portions 24a facing each other in the pair of support members 2, and faces the two rope holding portions 24a in the arrangement direction. .. Each rope holding portion 64a is provided with a through hole, and when towing the caisson-device connector, the tow rope 81 is inserted into the through hole.

A contact portion 63a is provided at each end of the two vertical frame members 61 shown in FIG. Further, a contact portion 63b is provided at each end of the two horizontal frame members 62 that are not provided with the connecting member holding portion 64 and the rope holding portion 64a. As shown in FIGS. 13 and 14, the contact portions 63a and 63b are members that project toward both sides in the arrangement direction. The contact portion 63a at the upper end of the vertical frame member 61 faces the upper surface 94 of the two caissons 9 (adjacent caisson pairs) sandwiching the intermediate member 6, and the contact portion 63a at the lower end of the vertical frame member 61 faces the upper surface 94. It faces the lower surface 95 of the two caissons 9. This prevents the relative positions of the two caissons 9 from being significantly displaced in the vertical direction.

The contact portion 63b at the end on the (+ Y) side of the horizontal frame member 62 faces the side surface 92 on the (+ Y) side of the two caissons 9, and the end on the (−Y) side of the horizontal frame member 62. The contact portion 63b of the two caissons 9 faces the side surface 92 on the (−Y) side of the two caissons 9. This prevents the relative positions of the two caissons 9 from being significantly displaced in the width direction. In the intermediate member 6, the set of the contact portions 63a and 63b serves as a positional deviation limiting portion that limits the relative positional deviation of the two caissons 9 (adjacent caisson pairs) in the vertical direction and the width direction.

FIG. 16 is a diagram showing a horizontal frame member 62 and an abutting portion 63b of the intermediate member 6. In FIG. 16, the vertical frame member 61 is omitted. Further, the cushioning material 611 is shown by a broken line, and the cross section (cross section perpendicular to the vertical direction) of the two caissons 9 sandwiching the intermediate member 6 at the position of the contact portion 63b is shown.

As shown in FIG. 16, each contact portion 63b includes a contact portion main body 631, two buffer portions 632, and two guide portions 633. The contact portion main body 631 is attached to the end portion of the horizontal frame member 62 and projects on both sides in the arrangement direction (X direction). The two cushioning portions 632 and the two guide portions 633 are attached to the inner surface of the contact portion main body 631 in the width direction (Y direction), that is, the surface on the caisson 9 side. The two guide portions 633 are arranged at both ends of the contact portion main body 631 in the arrangement direction. Each guide portion 633 has an inclined surface 634 that separates from the contact portion main body 631 as it approaches the horizontal frame member 62 in the arrangement direction. The contact portion main body 631 and the guide portion 633 are formed of, for example, metal or the like.

The two cushioning portions 632 are arranged near both sides of the horizontal frame member 62 in the arrangement direction. Each cushioning portion 632 is located between the guide portion 633 and the horizontal frame member 62. The cushioning portion 632 has a plate shape and is formed of an elastic material such as rubber. In the intermediate member 6, a design gap is provided between the caisson 9 and the contact portion 63b in the width direction. When the caisson-device connector is towed, which will be described later, the caisson 9 and the contact portion 63b may collide with each other due to the shaking of the caisson-device connector. Even in such a case, the intermediate member 6 can reduce the impact at the time of collision by providing the buffer portion 632, and damage to the caisson 9 and the contact portion 63b can be prevented or suppressed.

Each contact portion 63a provided at the end of the vertical frame member 61 has a point where the cushioning portion 632 and the guide portion 633 are attached to the inner surface (the surface on the caisson 9 side) in the vertical direction of the contact portion main body 631. Except for this, it has the same structure as the contact portion 63b in FIG. Also in the vertical direction, a design gap is provided between the caisson 9 and the contact portion 63a. Even when the caisson 9 and the abutting portion 63a collide with each other during towing the caisson-device connector, the impact at the time of collision can be reduced by providing the buffer portion 632.

Further, as for the contact portions 23a and 23b of the support member 2, the contact portion main body protrudes from the end portion of the vertical frame member 21 or the horizontal frame member 22 to only one side (caisson 9 side) in the width direction, and the contact portion main body. It has the same structure as the contact portions 63a and 63b of the intermediate member 6 except that one cushioning portion and one guide portion are attached. Also in the support member 2, a design gap is provided between the caisson 9 and the contact portions 23a and 23b. Even when the caisson 9 and the abutting portions 23a and 23b collide with each other when the caisson-device connector is towed, it is possible to reduce the impact at the time of collision by providing the buffer portion.

In the transportation process of the caisson 9 using the floating body connecting device 1a, a plurality of caissons 9 are manufactured and prepared on land (yard or the like) (FIG. 6: step S11). The caisson 9 is floated on the sea one box at a time using, for example, a crane. Subsequently, at a predetermined connection position on the sea, a plurality of caissons 9 are arranged in the arrangement direction, and a pair of support members 2 are arranged on the front side and the rear side in the arrangement direction. Further, one intermediate member 6 is arranged between two caissons 9 adjacent to each other. At this time, by providing the guide portion 633 (see FIG. 16) in each of the contact portions 63a and 63b, the caisson 9 is arranged when the caisson 9 and the intermediate member 6 are brought close to (contact) in the arrangement direction. It is possible to prevent the cushioning portion 632 (for example, a bolt that fixes the cushioning portion 632 to the contact portion main body 631) from being damaged due to contact with the side surface of the cushioning portion 632 in the direction. The same applies to the case where the caisson 9 and the support member 2 are brought close to each other in the arrangement direction.

After that, one end of each connecting member 31 is fixed to the fixing portion 24 of one supporting member 2, and the other end is fixed to the corresponding fixing portion 24 of the other supporting member 2. As a result, the plurality of caissons 9 are indirectly contacted via the intermediate member 6, the pair of support members 2 are in contact with the caissons 9 at both ends, and the plurality of caissons 9 are connected in the arrangement direction (step S12). .. At this time, each connecting member 31 is in a substantially stretched state without loosening between the pair of supporting members 2, but the compressive force in the array direction acting on the plurality of caissons 9 is set to about 0. In other words, in the connecting member 31, the tension applied (initial tension) is set to 0 except for the tension due to its own weight. The connecting member 31 is also inserted into the through hole of the connecting member holding portion 64 of each intermediate member 6.

When a plurality of caissons 9 are connected at the connection position on the sea (when a caisson-device connection is formed), the through holes of the rope holding portions 24a and 64a in which each of the two towing lines 81 are arranged in the arrangement direction. Will be inserted into. One end of each towing line 81 is fixed to the towing vessel 8, and the other end is fixed to the rope holding portion 24a of the support member 2 on the opposite side of the towing vessel 8. Then, the caisson-device connecting body is towed by the towing vessel 8 and transported from the connecting position to the installation position (step S13).

At the installation position, the connection between the pair of support members 2 by the connecting portion 3 is released (step S14), and the plurality of caissons 9 are removed from the floating body connecting device 1a. After that, the caisson 9 is installed in the installation position. On the other hand, the pair of support members 2 and the plurality of intermediate members 6 are connected to each other by using, for example, a connecting member 31, and are transported to a predetermined position (for example, a dock) by the towing vessel 8 (step S15). As described above, the transportation process of the plurality of caissons 9 using the floating body connecting device 1a is completed.

As described above, in the floating body connecting device 1a, the plurality of caissons 9 arranged in the arrangement direction are sandwiched by the pair of support members 2 from the front side and the rear side in the arrangement direction. Further, a plurality of caissons 9 are connected in the arrangement direction between the pair of support members 2 by the connecting portion 3 that separably connects the pair of support members 2. Thereby, a plurality of caissons 9 can be easily connected. Further, the connection and disconnection of the connection member 31 between the pair of support members 2 can be performed outside the caisson 9 (fixing portion 24 in the support member 2), and the caisson 9 can be transported using the floating body connecting device 1a. And can be easily installed. Further, since the caissons 9 are not fixed to each other, damage to the caissons 9 due to sagging and hogging during towing can be suppressed.

By the way, as shown in FIG. 13, in the caisson 9 according to the second embodiment, a plurality of slits 98 for wave-dissipating are formed on one side surface 92. The plurality of slits 98 extend in the vertical direction and are arranged in the arrangement direction. In this case, if a plurality of caissons 9 are connected while being compressed in the arrangement direction by the connecting portion 3 as in the first embodiment, the caisson 9 may be damaged depending on the compressive force.

On the other hand, in the floating body connecting device 1a, a plurality of caissons 9 are connected in the arrangement direction while the support member 2 hardly presses the surface 91 of the caisson 9 and the connecting member 31 is not loosened. As a result, it is possible to prevent or suppress the caisson 9 from being damaged. Since each connecting member 31 is in a substantially stretched state, the caissons 9 do not separate from each other at the time of towing, for example, beyond the length of the abutting portions 63a and 63b of the intermediate member 6.

Further, an intermediate member 6 is arranged between two caissons 9 adjacent to each other, and the intermediate member 6 limits the displacement of the relative positions of the two caissons 9 in the width direction and the vertical direction. It has a portion (contact portion 63a, 63b). As a result, even when a plurality of caissons 9 are connected without being compressed in the arrangement direction, it is possible to prevent or suppress a large deviation in the relative positions of the two caissons 9 in the width direction and the vertical direction. Depending on the design of the floating body connecting device 1a, the misalignment limiting unit may limit the relative position misalignment of the two caissons 9 in only one of the width direction and the vertical direction.

By the way, in the example of FIG. 5 in which the shear key 931 is provided on the facing surface 93 of the caisson 9, a plurality of shear keys 931 are formed in each caisson 9 before the plurality of caisson 9s are connected, and the shear key 931 is formed after the plurality of caisson 9s are disconnected. It is necessary to remove a plurality of shear keys 931. Therefore, the work related to the transportation of the plurality of caissons 9 becomes complicated, and the cost required for the transportation increases.

On the other hand, in the floating body connecting device 1a using the intermediate member 6, it is possible to prevent or suppress the misalignment between the caissons 9 without forming the shear key 931 in the transportation of the plurality of caissons 9. As a result, it is possible to simplify the work related to the transportation of the plurality of caissons 9 and reduce the cost required for the transportation. Similarly, in the floating body connecting device 1a in which the cushioning material 611 is attached to the intermediate member 6, it is not necessary to provide the caisson 9 with a plurality of cushioning materials 932 (see FIG. 5), so that the work related to the transportation of the plurality of caissons 9 is simplified. It is possible to reduce the cost required for transportation.

Various modifications can be made by the transportation method using the floating body connecting devices 1, 1a and the floating body connecting devices 1, 1a.

The plurality of caissons 9 do not necessarily have to be arranged in one column, and may be arranged in a plurality of columns. In the example of FIG. 17, two caisson rows 90 arranged in the arrangement direction (X direction) along the towing direction D1 are designated as caisson rows 90, and two caisson rows 90 are arranged in the width direction (Y direction) perpendicular to the arrangement direction. .. The pair of support members 2 sandwich the two caisson rows 90 from the front side and the rear side in the arrangement direction. The width of each support member 2 is larger than the width of the caisson 9. Further, the connecting member 31 of the connecting portion 3 is arranged between the two caisson rows 90, and each caisson row 90 is compressed (or without compression) between the pair of supporting members 2 in the arrangement direction. The support members 2 of the above are connected. As a result, a plurality of caissons 9 are connected. From the viewpoint of reducing the fluid resistance of the caisson-device connector, it is preferable that the plurality of caissons 9 are arranged in a row in the arrangement direction. On the other hand, when a plurality of caisson rows 90 are provided, the width in the width direction becomes large, so that the restoring force against rolling can be increased.

Further, each support member 2 may come into contact with only the end portion in the width direction of the caisson 9. In the example of FIG. 18, each support member 2 has two support elements 20. The two support elements 20 come into contact with both ends in the width direction (Y direction) on the pressed surface 91 of the caisson 9. Of the four support elements 20 in the pair of support members 2, one support element 20 is provided with two fixing portions 24. Further, pulleys 25 are provided on the other three support elements 20. In the floating body connecting device 1 of FIG. 18, the connecting member 31 whose one end is fixed to one fixing portion 24 passes through the pulley 25 of the three support elements 20, and the other end of the connecting member 31 is the other fixing portion. It is fixed at 24. As a result, the pair of support members 2 are separably connected to each other. Also in the example of FIG. 18, a plurality of caissons 9 are connected between the pair of support members 2 while being compressed (or not compressed) in the arrangement direction (X direction). Further, as shown in FIG. 19, the arrangement direction (X direction) of the caisson 9 and the towing direction D1 may be different. The anterior and posterior sides of the caisson 9 in the arrangement direction are for convenience and do not necessarily have to be the anterior and posterior sides of the towing direction D1. In the example of FIG. 19, it is possible to suppress damage to the floating body due to sagging and hogging in the horizontal direction perpendicular to the towing direction D1 (the lateral direction in FIG. 19 and the arrangement direction of the caisson 9).

In the floating body connecting device 1, the orientation of the float 41 may be automatically controlled so that lift acts in a direction opposite to the force for tilting the caisson 9. For example, in the floating body connecting device 1, a sensor (accelerometer or the like) for acquiring the moving speed and the rolling of the caisson 9 is provided. Further, a rotation mechanism for changing the angle of the float 41 is provided by rotating the float 41 around an axis parallel to the width direction. Then, from the moving speed of the floating body connecting device 1 (moving speed of the towing vessel 8) and the rolling data of the caisson 9, the angle at which the lift in the float 41 is maximized is obtained, and the rotating mechanism is set to that angle. It is automatically controlled. Depending on the design of the floating body connecting device 1, the float portion 4 may have a float 41 having a shape other than the airfoil shape. Further, when the float 41 is not used for vibration damping, the number of floats 41 and the arrangement with respect to the support member 2 may be arbitrarily determined.

Depending on the design of the floating body coupling devices 1, 1a, the intermediate member 6 (and the PC cable 51) may be omitted between two caissons 9 (adjacent caisson pairs) adjacent to each other. In this case, a plurality of caissons 9 are connected in the arrangement direction in a state where two caissons 9 adjacent to each other are in direct contact with each other. Further, the intermediate member 6 may be provided between some adjacent caisson pairs, and the intermediate member 6 may be omitted between the remaining adjacent caisson pairs. In either case, in the floating body connecting devices 1, 1a, it is preferable that the plurality of caissons 9 are directly or indirectly connected in the arrangement direction.

In the first embodiment, when the maximum inundation height in the dock is smaller than the draft of the caisson 9 (when the caisson 9 cannot be suspended in the dock), a plurality of caisson 9s are connected at the sea. Caisson 9 may be concatenated. In the second embodiment, when the maximum inundation height in the dock is larger than the draft of the caisson 9, a plurality of caissons 9 may be connected at the connecting position in the dock. Further, the connecting position of the plurality of caissons 9 may be on land (yard or the like). In this case, the caisson-device connector is floated on the sea using a crane or the like, and then transported to the installation position by towing.

The caisson 9 may be an RC caisson having a reinforced concrete structure or the like, in addition to the hybrid caisson. Further, the floating body connecting device 1 may be used for connecting floating bodies which are structures other than the caisson 9.

The above-described embodiment and the configurations in each modification may be appropriately combined as long as they do not conflict with each other.

1,1a Floating body connecting device 2 Support member 3 Connection part 4 Float part 6 Intermediate member 9 Caisson 31 Connection member 41 Float 44 Anti-sway wing 51 PC cable 52 Side plate 63a, 63b Contact part 92 (Caisson) Side surface 411 (Float) Top surface 412 (Float) Bottom surface S11-S15 Steps

Claims (9)

It is a floating body connecting device
A pair of support members that sandwich a plurality of floating bodies arranged in the arrangement direction from the front side and the rear side in the arrangement direction,
By connecting the pair of support members in a separable manner, a connecting portion that connects the plurality of floating bodies in the arrangement direction between the pair of support members and a connecting portion.
A floating body connecting device characterized by comprising. The floating body connecting device according to claim 1.
A floating body connecting device, wherein the connecting portion connects the plurality of floating bodies while compressing them in the arrangement direction. The floating body connecting device according to claim 1 or 2.
A floating body connecting device, wherein a connecting member between the pair of supporting members faces the outer surfaces of the plurality of floating bodies in the connecting portion. The floating body connecting device according to any one of claims 1 to 3.
A floating body connecting device characterized by further including a float portion fixed to each support member. The floating body connecting device according to claim 4.
The float portion fixed to one support member has a pair of floats and has a pair of floats.
The pair of floats are arranged on both sides in the width direction perpendicular to the arrangement direction with respect to the one support member, respectively.
The cross-sectional shape of each float perpendicular to the width direction is an airfoil including an upper surface facing upward and a lower surface facing downward, and when each float descends in water in towing along the arrangement direction. In addition, the floating body connecting device is characterized in that the pressure on the lower surface side of each float becomes larger than the pressure on the upper surface side. The floating body connecting device according to any one of claims 1 to 5.
It is further provided with a pair of anti-sway blades that are fixed to one support member and are arranged on both sides in the width direction perpendicular to the arrangement direction with respect to the one support member.
In towing in the direction along the arrangement direction, when the pair of anti-sway blades are arranged in water and each of the anti-sway blades descends in water, the pressure on the lower surface side of each of the anti-sway blades becomes the pressure on the upper surface side. Floating body coupling device characterized by being larger than. The floating body connecting device according to any one of claims 1 to 6.
A floating body connecting device, wherein each of the plurality of floating bodies is a caisson. The floating body connecting device according to any one of claims 1 to 7.
Further, an intermediate member arranged between two floating bodies adjacent to each other in the plurality of floating bodies is provided.
A floating body connecting device, wherein the intermediate member includes a positional deviation limiting portion that limits the relative positional deviation of the two floating bodies in a width direction and / or a vertical direction perpendicular to the arrangement direction. It is a floating body transportation method
A step of connecting a plurality of floating bodies at a predetermined connecting position by using the floating body connecting device according to any one of claims 1 to 8.
The process of towing the plurality of floating bodies and transporting them from the connecting position to the installation position,
In the installation position, a step of releasing the connection between the pair of support members by the connection portion in the floating body connecting device, and
A step of towing the pair of support members and transporting the pair of support members to a predetermined position away from the installation position.
A floating body transportation method characterized by being provided with.

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