JP6534029B2 - Construction transport system - Google Patents

Description

  The present invention relates to a construction transport system.

In the past, for example, as a floating marine structure, a tower of high-rise or high-rise steel frame structure having a height of over 500 m and an outer diameter of several hundreds m on a floating structure floating on the ocean (so-called mega float) A city on the ocean where a department is built is being considered (see, for example, Patent Document 1).
In order to construct a floating marine structure of such a scale, it is generally considered to install and construct an ultra-large crane such as that used in, for example, the construction of a nuclear power plant on the floating structure.

  In Patent Document 1, a completed construction is performed by repeating a process of sequentially lowering a construction which is constructed while constructing a construction of the construction sequentially from the bottom to the top on the floating construction from the top of the floating construction. Above the floating body structure while suspended from the floating body structure with the upper part of the floating body suspended, the body is applied to the top of the floating body structure, and then the whole of the built body is allowed to stand on the floating body structure It is disclosed about the construction method of a structure.

Patent No. 5105192 gazette

However, the above-described conventional method for constructing a floating offshore structure has the following problems.
That is, when the jib crane is installed on the floating structure, the inclination angle of the jib with respect to the horizontal direction is reduced when construction near the maximum working radius which is far from the installation place of the crane is performed. That is, since the space immediately below the jib (the height at which it can be suspended) becomes small and the jib interferes with the frame to be assembled, it was necessary to carry out the construction while suppressing the assembly height of the frame. Therefore, in the case where the construction of the frame and the descent into the sea as described in Patent Document 1 are sequentially repeated, the height of the frame which can be constructed by a crane is limited, and the frequency of repeating the descent increases. There is room for improvement in that point as efficiency is reduced.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a construction transportation system capable of efficiently transporting materials to a lifting equipment installed at the top of a structure.

In order to achieve the above object, a construction transportation system according to the present invention is a construction transportation system for delivering materials to a lifting facility installed at the upper part of the construction being constructed when the construction is performed. And a ring-shaped transport unit provided inside or outside of the structure and extending in a ring shape for moving the material in the circumferential direction, and horizontal provided to be able to be delivered to at least a part of the coil transport unit. And the lifting unit is provided so as to be pivotable about the structure, and is pivoted above the unloading area provided in a part of the circumferential transport unit. Sometimes, it is characterized in that the material can be conveyed in the vertical direction, and the circulating conveyance unit and the horizontal conveyance unit are disposed at the same height.

  In the present invention, when the material is supplied to the lifting equipment installed at the upper part of the structure under construction, the material is transported to the circulating transportation part by, for example, the horizontal transportation part installed on the ground. Material can be delivered from the horizontal transport unit to the orbiting transport unit. Then, the material can be moved in the circumferential direction by the circulation conveyance unit to the loading area where the loading equipment can be picked up by the lifting equipment, and the material can be lifted by the lifting equipment to construct a structure. In this case, since the circulating conveyance unit and the horizontal conveyance unit are disposed at the same height, delivery of materials between the two becomes easy.

In addition, the material can be moved to the range of the entire circumference of the structure in plan view by the circulating conveyance unit, and the material can be continuously conveyed, so the time required for lifting can be shortened. The construction efficiency can be improved.
Furthermore, according to the present invention, not only the loading of materials but also, for example, lifting materials coming from the structure under construction and the like from the structure under construction are suspended by the lifting equipment on the circling transport section, and connecting parts with the horizontal transport section At this time, it is possible to transfer the material from the circulating conveyance unit to the horizontal conveyance unit by moving the horizontal conveyance unit.

  Further, in the construction conveyance system according to the present invention, it is preferable that a plurality of delivery parts with the horizontal conveyance part in the circulation conveyance part are provided.

  According to the present invention, a plurality of horizontal conveyance units are provided around the circulation conveyance unit, and it becomes possible to deliver materials on the circulation conveyance unit in parallel by the plurality of delivery units. Therefore, the loading of materials by the lifting equipment can be performed continuously, and the working efficiency can be improved. Moreover, construction work of a structure can also be performed in multiple places by providing the lifting equipment of the quantity corresponding to a plurality of delivery parts in a circumference transportation part.

  Further, in the construction conveyance system according to the present invention, it is preferable that a conveyance carriage that is detachable and movable with respect to the orbiting conveyance unit and the horizontal conveyance unit is provided.

  In this case, the material can be transported between the horizontal transport unit and the orbiting transport unit by using the transport carriage, and the transport carriage moving along the orbiting transport unit can be lifted and carried by the lifting equipment. . Therefore, transportation is not limited to the shape, size, and quantity of the material. Further, since the shape of the transport carriage is constant, interference between the materials can be prevented, and there is an advantage that the transport line can be easily controlled.

  Further, in the construction transfer system according to the present invention, preferably, the empty transfer carriage unloaded by the lifting equipment is moved from the circulating transfer unit to the horizontal transfer unit.

In this case, the material is loaded on the transport carriage and moved from the horizontal transport unit to the circulation transport unit, and the empty transport carriage after the material is carried in by the lifting equipment is returned from the circulation transport unit to the horizontal transport unit It becomes possible. Therefore, the transport carriage can be circulated and used in a constant flow.
Also, by providing delivery units in the circumferential conveyance unit at a plurality of locations by a plurality of horizontal conveyance units, the transport carriage carrying the material is carried from the first delivery unit to the circumferential conveyance unit, and the circulation direction in the first delivery unit It is also possible to deliver the transport carriage empty from the second delivery section adjacent to the second delivery section to the horizontal transport section connected to the second delivery section by delivery.

  Further, in the construction conveyance system according to the present invention, it is preferable that the structure under construction is provided with a conveyance opening communicating the predetermined position of the circulating conveyance unit with the lifting equipment.

  In this case, the material on the circulating conveyance unit can be lifted by the lifting equipment, passed through the conveyance opening, and carried into the upper part of the structure under construction. As described above, since the transfer opening functions as the material loading path in the vertical direction, interference with other operations can be suppressed.

  Further, in the construction conveyance system according to the present invention, it is preferable that the conveyance direction of the portion of the horizontal conveyance section delivered to the circumferential conveyance section be a direction along the radial direction of the circumferential conveyance section.

  In this case, the material conveyed by the horizontal conveyance unit can be delivered to the circulation conveyance unit in the same direction without changing the conveyance direction of the material conveyed by the horizontal conveyance unit in the delivery unit of the circulation conveyance unit.

  According to the construction transportation system of the present invention, materials can be efficiently transported to the lifting equipment installed at the top of the structure.

It is the perspective view which showed the construction state of the offshore structure by embodiment of this invention. It is a side view which shows the structure of the offshore structure shown in FIG. It is the top view which looked at the sea construction system for constructing the tower part of the offshore structure shown in FIG. 1 from upper direction. It is a top view which shows the structure of one assembly unit shown in FIG. 3, Comprising: It is a top view which shows the inner side and the outer side of a cover body. It is an AA line arrow line view shown in FIG. 1, and is a side view of the marine construction system. It is a side view which shows the structure of the support pillar for revolutions in an assembly unit. It is a side view which shows the structure of the unit support pillar in an assembly unit. It is a top view which shows the whole structure of a conveyance system. It is a side view showing a circumference conveyance part and a horizontal conveyance part of a conveyance system. (A), (b) is a side view which shows the construction procedure of the tower part which used the sea construction system. (A), (b) is a side view which shows the construction procedure of the tower part using the sea construction system following FIG.10 (b). (A), (b) is a side view which shows the construction procedure of a tower part. (A), (b) is a side view which shows the construction procedure of the tower part following FIG.12 (b). (A), (b) is a side view which shows the construction procedure of the tower part following FIG.13 (b).

  Hereinafter, a construction transfer system according to an embodiment of the present invention will be described based on the drawings.

  The construction transportation system 6 according to the present embodiment is, for example, an offshore construction system 10 for constructing a floating offshore structure (hereinafter referred to as an offshore structure 1) functioning as an offshore city as shown in FIGS. 1 and 2. Used to deliver materials to

  The offshore structure 1 includes a large floating body structure 1A floated on the ocean, and a high-rise cylindrical tower portion 1B (structure) supported on the floating body structure 1A, for example, having a height of 1000 m. A ring-shaped air-space portion 1C gradually spreading outward in the radial direction from the upper portion of the tower portion 1B upward, and an outer peripheral low-layer portion 1D (floating-body structure which spreads from the tower portion 1B toward the outer periphery of the floating structure 1A And the). The offshore structure 1 is a structure that functions as a so-called "sea city" provided with living spaces, office spaces, commercial facilities, recreation facilities such as parks, and the like.

  In the following, the central axis of the tower portion 1B is referred to as tower axis O, and in a plan view viewed from the tower axis O direction, a direction orthogonal to tower axis O is referred to as radial direction, and a direction circling around tower axis O Is called the circumferential direction.

  The floating body structure 1A has a box unit (not shown) integrally formed by combining a plurality of honeycomb cells made of concrete (for example, not shown) at a manufacturing yard provided on land near the installation of the offshore structure 1 The box units are manufactured to a possible size, and the box units are towed to the sea at the installation site by a ship, and the box units are connected to each other to construct a substantially circular shape in plan view as a whole. Alternatively, concrete is cast on the upper portion of the box unit by sea to raise the desired height, that is, the load of the tower portion 1B and the ring shaped air portion 1C to function as a base base by buoyancy. be able to.

The floating structure 1A includes a central floating body 1Aa located immediately below the tower 1B and an outer peripheral floating body 1Ab located radially outward of the central floating body 1Aa. The height of the floating body structure 1A is set to, for example, approximately 180 m in the central floating body portion 1Aa and approximately 115 m in the outer peripheral floating body portion 1Ab. Such a floating body structure 1 is constructed so that most of the floating body structure 1 is submerged in the sea by introducing seawater inside, and floats on the sea with its weight balance adjusted.
Further, in the floating structure 1A, an insertion hole 1a having a circular shape in plan view is formed, in which the tower portion 1B is disposed so as to be insertable in the vertical direction during the construction of the tower portion 1B.

The tower portion 1B has a steel truss structure (a main structure frame made of columns and beams), for example, a cylindrical shape with an outer diameter of 300 m, and a multilayer (in which a hollow portion 12 is formed along the tower axis O at the center in plan view) The height of one layer is, for example, 50 m), which is a large structure, and the upper portion has a diameter-reduced shape. The base of the ring-shaped air gap portion 1C is joined to the diameter-reduced portion. For example, an office, a plant factory, a research laboratory, a laboratory, etc. can be provided in the tower section 1B.
The tower unit 1B repeats the construction of lowering one layer toward the sea while constructing one layer from the lower part to the upper part, and when the construction of the entire tower part 1B is completed, the entire tower part 1B is lifted up to stand by It is built.

The outer peripheral lower layer portion 1D has, for example, an outer diameter of 1000 m and a cylindrical shape coaxially arranged with the tower axis O, and the tower portion 1B at the time of construction is vertically movable in the space inside. For example, facilities such as a residential facility, a waterside park, a leisure facility, and a beach resort can be arranged in the outer peripheral low-rise part 1D.
Two swing rails 34A and 34B provided coaxially with the tower axis O are laid in a ring shape on the upper surface of the uppermost floor of the outer peripheral lower layer portion 1D on the inner peripheral side. The pivoting rails 34A and 34B are radially spaced from each other, and a unit support column 32 of the assembly unit 3 described later can move along the pivoting rails 34A and 34B.

  The ring shaped air part 1C has a multi-layered steel frame structure, and for example, a hotel, a commercial facility, a convention facility, a residence, a communal house, a company house, etc. can be provided. The outer diameter of the top of the ring-shaped airspace portion 1C is, for example, approximately 1000 m.

  The tower portion 1B and the ring-shaped air portion 1C described above are constituted by tower blocks 11 (see FIGS. 3 and 4) divided at a central angle of 15 ° around the tower axis O.

Next, the sea-based construction system 10 for constructing the tower portion 1B will be described based on the drawings.
As shown in FIG. 2 and FIG. 5, the offshore construction system 10 is provided coaxially with the tower axis O at the central portion in plan view of the tower portion 1B and supported so as to be movable up and down with respect to the tower inner circumferential shell 12a of the tower portion 1B. A central stage 2 having a stage support column 21 to be assembled, and a plurality of (here, three units in this case) supported so as to be circumferentially pivotable with respect to the central stage 2 and vertically supported on the outer peripheral lower layer portion 1D And unit 3 (lifting equipment).

As shown in FIGS. 4 and 5, the central stage 2 is circular in plan view, and is supported from below by a plurality of stage support columns 21 at intervals along the circumferential direction. At the lower part of the plurality of stage support columns 21, support legs 20 (lifting devices) are provided which can be supported with respect to the tower inner peripheral housing 12 a of the hollow portion 12 and at two upper and lower stages. The pair of support legs 20 (upper support leg 20A, lower support leg 20B) are provided so as to be movable forward and backward in the radial direction with respect to the stage support column 21 and have a projecting end that can be detachably attached to the tower inner peripheral housing 12a. It has a department.
The lower support leg 20 B is fixed to the lower end of the stage support pillar 21. On the other hand, the upper stage support leg 20A is provided on a column engagement portion 22 which can be fixed and opened with respect to the stage support column 21. The upper support leg 20A can slide along the stage support post 21 when the post locking portion 22 is opened.

By fixing the upper support leg 20A to the tower inner casing 12a and releasing the lower support leg 20B fixed to the tower inner casing 12a, the post locking portion 22 is released to the stage support post 21. The central stage 2 can be vertically moved with respect to the housing of the tower unit 1B. In addition, by fixing the lower support leg 20B to the tower inner casing 12a and fixing the upper support leg 20A to the tower inner casing 12a, the post locking portion 22 is fixed to the stage support post 21. The entire frame of the installed tower unit 1B assembled with the descent of the central stage 2 can be lowered.
That is, the central stage 2 is configured to be able to ascend and descend with a scale insect type while sequentially moving the upper support leg 20A and the lower support leg 20B in and out according to the progress of the steel frame assembly of the tower portion 1B.

  As shown in FIG. 5, an annular guide guide rail 23 (guide guide) extending in the circumferential direction is provided on the upper surface of the central stage 2. The guide guide rail 23 is disposed on the outer peripheral side in the radial direction of the central stage 2.

  The assembly unit 3 is disposed above the frame of the tower unit 1B to be constructed, and in a state in which the turning is stopped, the tower block 11 configured at a central angle of 15 ° in the tower unit 1B can be assembled in plan view A construction area R1 and a carry-in range R2 necessary for carrying in materials and the like on a part of the inner peripheral side of the outer peripheral low-rise portion 1D.

  As shown in FIG. 3, the assembly unit 3 is provided so that three units (symbols 3A, 3B, 3C) can be pivoted around the tower axis O independently. These three assembly units 3A, 3B, 3C are basically arranged at equal intervals in the circumferential direction (interval of central angle 120 ° pitch) during construction, and each is 1/3 (central angle 120 °) in circumferential direction The scope of) can be constructed in parallel. Each of the assembly units 3A, 3B, and 3C has a pivoting support column 31 disposed on the inner peripheral side in the radial direction and a unit support column 32 disposed on the outer side.

  As shown in FIGS. 5 and 6, the turning support column 31 is guided by a guide guide rail 23 laid on the central stage 2 and is moved by an electric motor etc. (see FIG. 7). Is equipped. Moreover, the unit support column 32 is equipped with the 2nd driving | running | working wheel 32a 2 each 2 circumferentially. The second traveling wheels 32a are movable by an electric motor or the like along the swing rails 34A and 34B laid on the outer peripheral lower layer portion 1D, respectively.

  As shown in FIG. 5, the pivoting support column 31 and the plurality of unit support columns 32 are integrally connected by a frame member 35 framed by steel or the like. On the lower surface of the frame member 35, there is a first lifting equipment 36 which is the assembly area R1 and is disposed above the tower portion 1B, and a loading area R2 of the outer peripheral low layer portion 1D. And the first lifting equipment 36 and the second lifting equipment 37 provided so as to be able to deliver materials.

  The first lifting equipment 36 moves along the pair of first swing rails 36A extending along the circumferential direction in the assembly area R1 and the pair of first swing rails 36A as shown in FIGS. A radially movable first radial movement rail 36B and a suspended first hoist 36C moved along the first radial movement rail 36B are provided. The first radially moving rail 36B is suspended from the first swing rail 36A.

The second lifting equipment 37 is provided movably along a pair of second swing rails 37A and a pair of second swing rails 37A extending along the circumferential direction in the loading area R2, and along the radial direction An extending second radial moving rail 37B and a suspended second hoist 37C moving along the second radial moving rail 37B are provided. The second radially moving rail 37B is suspended from the second swing rail 37A.
By aligning the first radial movement rail 36B and the second radial movement rail 37B on a straight line, the first hoist 36C and the second hoist 37C can be transferred between the two movement rails 36B and 37B. Materials can be delivered between the assembly area R1 and the carry-in area R2.

  As shown in FIG. 7, the unit support columns 32 each include an elevation device 38 capable of moving up and down with respect to the frame member 35. The lifting device 38 is disposed between the upper and lower grips 38A and 38B and the grips 38A and 38B in the unit support column 32, and the lift jack 38C is capable of advancing and retracting in a direction (vertical direction) in which both are moved close to each other. And have. That is, one of the grips 38A and 38B is fixed to the unit support column 32, the other is opened, and the frame member 35 can be moved up and down by expanding and contracting the elevating jack 38C.

That is, the assembly unit 3 is configured to be able to ascend and descend in the manner of the wormworm system while sequentially grasping and releasing the gripping portions 28A and 38B in accordance with the progress of the assembly of the housing of the tower portion 1B.
Further, by elevating and lowering the assembly unit 3 by the elevating device 38 and elevating and lowering the central stage 2, it is possible to move the frame member 35 of the assembly unit 3 up and down horizontally.

As shown by the two-dot chain line in FIG. 4, the assembly units 3A, 3B, 3C are provided with a cover 39 (a roof) covering the upper side of the frame 35 and at least three sides of the lifting equipment 36, 37. There is.
Here, the frame member 35, the first lifting equipment 36, the second lifting equipment 37, and the cover 39 described above are referred to as an assembly unit body 30 (see FIG. 5).

  In the offshore construction system 10 configured in this manner, in a state in which the stage support column 21 is fixed to the tower inner peripheral body 12a, a reaction force is applied to the outer peripheral low layer portion 1D to lower the central stage 2, and the assembled tower portion It is configured to sink sequentially into the sea through the insertion holes 1a of the floating structure 1A.

Further, as shown in FIGS. 1 and 8, in constructing the tower portion 1B of the present embodiment, the steel construction material (material M) of the tower portion 1B is placed on the transport slider 60 (transport carriage) in the offshore construction system 10. The conveyance system 6 (conveyance system for construction) for making it make it convey is provided.
The conveyance system 6 includes a ring-like conveyance portion 6A extending immediately below the assembly unit 3 and inside the lowermost layer of the outer peripheral lower layer portion 1D (outside of the tower portion 1B) coaxially with the tower axis O Of the circulation conveyance units 6A, the three conveyance units P1, P2 and P3 arranged at equal intervals in the circumferential direction are provided with a horizontal conveyance unit 6B arranged to be directed outward in the radial direction. The circulating conveyance unit 6A and the horizontal conveyance unit 6B are disposed at the same height on the floating structure 1A.

  Here, the transport slider 60 is a loading platform for loading the material M, and can slide between adjacent transport portions by sliding in the slide axial direction along a linear conveyor or slider described later. It is provided.

The arrangement | positioning area | region of the radial direction of 6 R of circular conveyance parts corresponds with carrying-in area R2 by the 2nd lifting equipment 37 shown in FIG. 5 of the assembly unit 3 by planar view. A loading area T is provided at an intermediate portion between the delivery portions P1, P2, and P3 adjacent to each other in the circumferential direction.
In the outer peripheral lower layer portion 1D, a transfer opening 13 (see FIGS. 5 and 9) extending in the vertical direction immediately above the unloading area T is provided. That is, the transport opening 13 functions as a material transport path, and the loading area R2 of the assembly unit 3 can be communicated with the unloading areas T1, T2, T3 through the transport opening 13, and the second lifting equipment The material 37 can be transported in the vertical direction by the 37 second hoist 37C.

As shown in FIG. 9, the orbiting conveyance unit 6A includes a plurality of ring-shaped orbiting linear conveyors 61, 61 coaxial with the tower axis O and a plurality of orbiting movable guides guided along the pair of orbiting linear conveyors 61, 61. And the orbiting slider 62 of FIG. The pair of orbiting linear conveyors 61, 61 are arranged radially spaced from each other. This interval can be set arbitrarily, but is set based on conditions such as the size of the transport slider 60 described later and the size of the opening 13 described above.
The orbiting slider 62 is provided so that the slide axis is directed in the radial direction, and the pair of orbiting linear conveyors 61, 61 is bridged.

  As shown in FIG. 8 and FIG. 9, the horizontal transfer section 6B provided at three locations includes a carry-in line 6Ba to which the material M is transferred from the sea on the outer peripheral portion of the offshore structure 1 shown in FIG. A delivery line 6Bb delivering the material M from the horizontal transport unit 6B to the circulating transport unit 6A and a switching line 6Bc disposed between the carry-in line 6Ba and the delivery line 6Bb are provided adjacent to each other.

The carry-in line 6Ba is disposed with the longitudinal direction oriented in the radial direction, and includes a pair of first rectilinear linear conveyors 63, 63 at predetermined intervals in the direction orthogonal to each other in the radial direction.
The switching line 6Bc is along the pair of second rectilinear linear conveyors 64, 64 arranged in the direction orthogonal to the first rectilinear linear conveyors 63, 63 and the pair of second rectilinear linear conveyors 64, 64. And a switchable slider 65 movable and guided. The switching slider 65 is movable between the pair of first rectilinear linear conveyors 63, 63 of the carry-in line 6Ba, and by being coincident with the first rectilinear linear conveyors 63, 63, the transport slider 60 is movable. Can be transferred between the two sides.

  The delivery line 6Bb includes a third rectilinear linear conveyor 66 disposed with the longitudinal direction oriented in the radial direction. The third rectilinear linear conveyor 66 is disposed within the movement range of the switching slider 65. When the third rectilinear linear conveyor 66 coincides with the switching slider 65 on the same line, the transfer slider 60 can shift between the two. The transfer slider 60 can be transferred between the two by matching with.

Next, a method of constructing the offshore structure 1 configured as described above will be described in detail based on the drawings.
As shown in FIG. 2, first, the floating structure 1A produced in the production yard (dock) on land is floated on the ocean and moored by a mooring cord (not shown). The floating structure 1A can stably support the entire offshore structure 1 during construction and after completion, and may be completed before construction of the tower portion 1B and the ring-shaped air portion 1C. Alternatively, it may be expanded gradually in parallel with the construction of the offshore structure 1. In any case, at the start of construction of the tower portion 1B, the marine construction system 10 can be installed at the construction position (in the present embodiment, a state in which the inner portion of the outer peripheral low layer portion 1D is constructed).

  As shown to Fig.8 (a), central floating body part 1Aa of floating body structure 1A is a state which provided circular insertion hole 1a which tower part 1B can penetrate in floating body structure 1A in construction of tower part 1B. It has become. Inside the insertion hole 1a, the floating / sinking frame 4 supporting the tower portion 1B from below is disposed. The floating and sinking frame 4 has a hollow structure and has a structure capable of sinking from the insertion hole 1a below the sea surface and floating above the sea surface by adjusting the buoyancy by the ballast. The tower portion 1 B is constructed on the floating and sinking frame 4 and fixed to the floating and sinking frame 4. The floating and sinking frame 4 is finally fitted and fixed to the inside of the insertion hole 1a to function as a foundation of the tower portion 1B to make the tower portion 1B stand alone.

Next, upon installation of the offshore construction system 10 provided with the central stage 2 and the assembly unit 3, up to three layers of the casing of the inner peripheral portion of the outer peripheral lower layer portion 1D are constructed and the lowermost layer of the tower portion 1B is constructed. The lowermost layer is installed so as to have the same height as the three-layer portion of the outer peripheral lower layer portion 1D. The construction of the lowermost layer of the tower portion 1B and the outer peripheral low layer portion 1D at this time is performed by installing a jib crane on the floating structure 1A.
At this time, the levitation sink 4 and the floating structure 1A are connected by the cable 5 (refer to FIG. 10A), and it is possible to support the completed tower portion 1B only by adjusting the buoyancy of the levitation sink 4 in a later process. At the time of disappearance, the tower section 1B is suspended and supported from the floating body structure 1A by the cable 5 via the floating and sinking frame 4.

  And the sea construction system 10 is installed. Specifically, the upper stage support leg 20A and the lower stage support leg 20B are extended radially outward to the tower inner peripheral casing 12a of the lowermost tower section 1B assembled and locked to hold the central stage 2 together with the stage support column 21. Install. Furthermore, the unit support column 32 is mounted on the turning rails 34A and 34B laid on the outer peripheral low-layer part 1D, and the turning support column 31 is placed on the guide guide rail 23 laid on the central stage 2. By doing this, three assembly units 3A, 3B, 3C as shown in FIG. 1 and FIG. 3 are installed at regular intervals in the circumferential direction.

Next, the construction method of the tower section 1B using the offshore construction system 10 will be specifically described. Here, the construction procedure in the state where the tower part 1B of a plurality of layers (9 layers in Drawing 8 (a)) was already constructed is explained.
First, as shown in FIG. 8A, in step S1 (Astep 1), the frame of tower block 11 for one layer (for example, 50 m in height) is assembled in the assembly area R1 at each position of each assembly unit 3. After completion of this assembly, the first traveling wheel 31a of the pivoting support column 31 of the assembly unit 3 and the second traveling wheels 32a of the plurality of unit support columns 32 of the assembly unit 3 shown in FIG. The assembly unit 3 is positioned so that the first lifting equipment 36 is arranged in the assembly area R1 of the tower blocks 11 adjacent in the circumferential direction by turning in one direction toward a substantially central angle of 15 °. Then, a new tower block 11 is assembled so as to be joined to the tower block 11 constructed in advance at this position.

  As shown in FIGS. 3 and 8B, the tower block 11 may be constructed sequentially in the circumferential direction while the assembly units 3A, 3B, 3C are gradually rotated in the circumferential direction by approximately 15 degrees. Complete the entire circumference (step S2 (Astep 2)). And if the working speed in each assembly unit 3A, 3B, 3C is equivalent, the construction of the construction range of central angle 120 degrees will be completed almost simultaneously. If there is an assembly unit 3 whose work has been delayed, it is also possible to use the assembly unit 3 with a quick progress to assist the delayed construction range. That is, since three assembly units 3A, 3B, 3C can be used simultaneously and can be independently pivoted around the central stage 2, each assembly unit 3A, 3B, 3C is in progress of the assembly operation. We can do construction together.

Next, in step S3 (Astep 3) shown in FIG. 9 (a), when the construction of the tower portion 1B for the entire circumference of one layer is completed, an operation for lowering the one layer of the assembled tower portion 1B to sink in the sea is performed. Do.
Specifically, the central stage 2 is also lowered by releasing the upper gripping portion 38A of the lifting device 38 shown in FIG. 7 from the unit support column 32 and contracting the lifting jack 38C to lower the assembly unit main body 30. At the same time, the tower portion 1B fixed to the stage support pillar 21 supporting the central stage 2 is lowered. The descent height at this time is determined by the extension length of the lifting jack 38C, but the grasping and releasing of the gripping portions 38A and 38B of the lifting device 38 and the extension and retraction of the lifting jack 38C are sequentially repeated to reduce The tower section 1B is lowered by the height of one layer in the manner of the method. At this time, the upper end of the uppermost layer of the assembled tower portion 1B matches the height with the upper end of the inner peripheral portion of the outer peripheral lower layer portion 1D, and temporarily fixed so that the tower portion 1B does not move with respect to the outer peripheral lower layer portion 1D. deep.
In addition, when sinking the tower part 1B in the sea, ballast is introduced to the floating and sinking frame 4 and the buoyancy is adjusted to lower it below the sea surface, and the height equivalent to the height of the frame of the constructed tower part 1B. Support in the lowered position.

  In step S4 (Astep 4) shown in FIG. 9 (b), after the descent of the tower portion 1B is completed at a height of one layer, the central stage 2 and the assembly unit 3 are raised by driving the lifting device 38. That is, in the lifting and lowering device 38 shown in FIG. 7, the central stage 2 and the assembly unit main body 30 are lifted in the manner of a scale insect type by repeatedly gripping and releasing the grips 38A and 38B and opening and closing the lifting jacks 38C. At this time, since the stage support column 21 is also lifted as the central stage 2 is lifted, the fixing of the tower inner peripheral body 12a of the upper stage support leg 20A of the stage support column 21 is released and the post locking portion 22 (see FIG. 5) After opening, the upper support leg 20A is moved upward along the stage support column 21, and the upper support leg 20A is fixed to the tower inner peripheral casing 12a of the upper layer of the tower portion 1B assembled most recently. Then, by raising the central stage 2 and the assembly unit 3 while using the lifting device 38 while making the central stage 2 and the assembly unit 3 in synchronization with each other, preparation for the next tower portion 1B is completed.

Thereafter, by repeating steps S1 to S4 described above, the entire tower portion 1B is assembled, and as shown in step S1 (Bstep 1) of FIG. 10A, almost the entire sea surface except a part of the upper portion of the tower portion 1B. It will sink down.
When the descent of the tower section 1B is completed, the offshore construction system 10 is removed.

Next, the tower portion 1B sunk below the sea surface is pulled up above the floating structure 1A and made to stand, while construction is performed to construct a ring-shaped air portion 1C on the top of the tower portion 1B.
First, as shown in FIGS. 10 (a) and 10 (b), in steps S1 (Bstep 1) and S2 (Bstep 2), the ballast is removed from the float and sink frame 4 to provide buoyancy, and the cable 5 is wound up. The levitation sink 4 as well as the entire tower part 1B is levitated, and accordingly the high-rise casing is raised on the outer peripheral low-layer part 1D through the insertion hole 1a of the floating structure 1A and the inner peripheral opening 1b of the outer peripheral low-layer part 1D .

Next, as shown in FIGS. 11 (a), (b) and 12 (a), in steps S3, S4 and S5 (Bsteps 3 to 5), the proximal end position of the ring shaped air space portion 1C in the tower portion 1B In the state where the joint portion) floats on the floating structure 1A and is located in the outer peripheral lower layer portion 1D, the pulling up of the tower portion 1B is stopped.
And the whole ring-like aerial part 1C is constructed by assembling the single-piece | unit block of 1 C of ring-like aerial parts divided | segmented into plurality in order in order of the outer peripheral side from the inner peripheral side of 1C of ring-like aerial parts. That is, the ring-shaped air gap portion 1C is completed by sequentially extending radially outward from the proximal end side.
Then, in step S6 (Bstep 6) shown in FIG. 12 (b), the remaining tower portion 1B is pulled up and made to stand on the floating structure 1A, and a series of construction is completed.
In addition, the tower section 1B is to carry out exterior, interior and other various constructions sequentially with the lift-up.

Next, the operation of the construction transfer system described above will be described in detail based on the drawings.
In the present embodiment, as shown in FIG. 8, when the material M is supplied to the assembly area R1 of the assembly unit 3 installed on the top of the tower unit 1B under construction, the above-ground part (floating structure 1A) The material M can be conveyed to the circulation conveyance unit 6A by the horizontal conveyance unit 6B installed above, and the material M can be further transferred from the horizontal conveyance unit 6B to the circulation conveyance unit 6A.
Then, the material M is moved in the circumferential direction by the circulation conveyance unit 6A to the loading area R2 where the second lifting equipment 37 of the assembly unit 3 can pick up, and the material M is lifted by the second lifting equipment 37 and the tower section 1B Can be built. In this case, since the circulating conveyance unit 6A and the horizontal conveyance unit 6B are arranged at the same height on the ground unit, delivery of the material M between the two units 6A and 6B is facilitated.

Further, since the material M can be moved to the range of the entire circumference of the tower portion 1B in plan view by the circulation conveyance unit 6B, and the material M can be continuously conveyed, the time taken for lifting is increased. It is possible to shorten and improve the construction efficiency.
Furthermore, in the present embodiment, not only the loading of the material M but also the loading of material etc. coming out of the tower section 1B during construction, for example, the material M is suspended by the assembly unit 3 on the circumference conveying section 6A It is possible to transfer the material M to the sea or the like by transferring the horizontal conveyance unit 6B by transferring it from the circulation conveyance unit 6A to the horizontal conveyance unit 6B at a connection portion (delivery unit P1, P2, P3) with the conveyance unit 6A.

Further, in the present embodiment, since three horizontal conveyance parts 6B are provided around the circumference conveyance part 6A, materials are placed on the circumference conveyance part 6A in parallel at three delivery parts P1, P2 and P3. It is possible to deliver M. Therefore, the loading of the material M to the upper part of the tower portion 1B by the assembly unit 3 can be performed continuously, and the working efficiency can be improved.
In addition, since assembly units 3A, 3B and 3C in quantities corresponding to the three delivery parts P1, P2 and P3 in the circulating conveyance part 6A are provided, construction work of the tower part 1B can also be performed at a plurality of places. .

  Further, in the present embodiment, the conveyance slider 60 can be used to convey the material M between the horizontal conveyance unit 6B and the orbiting conveyance unit 6A, and the assembly unit is assembled with the conveyance slider 60 that moves the orbiting conveyance unit 6A. It can be lifted and carried in at 3. Therefore, conveyance which is not limited to the shape, size, and quantity of the material M becomes possible. Further, since the shape of the transport slider 60 is constant, interference between the materials M can be prevented, and there is an advantage that the transport line can be easily controlled.

  Further, in the present embodiment, the material M is moved from the horizontal conveyance unit 6B to the orbiting conveyance unit 6A in a state where the material M is stacked on the conveyance slider 60 (symbol 0A shown in FIG. 8). It is possible to return the later empty transport slider 60B from the orbiting transport unit 6A to the horizontal transport unit 6B. Therefore, the transport slider 60 can be circulated and used in a constant flow.

  Further, in the present embodiment, the transfer slider 60 on which materials are stacked, for example, from the first delivery section P1 is provided by providing the delivery sections P1, P2 and P3 in the circumferential transport section 3A at a plurality of locations by three horizontal transport sections 3B. Is carried into the circulation conveyance unit 3A, and the conveyance slider 60 emptied from the second delivery unit P2 adjacent to the circulation direction in the first delivery unit P1 is connected from the circulation conveyance unit 3A to the second delivery unit P2 Can be delivered to the horizontal transport unit 6A.

  Further, in the present embodiment, since the transport opening 13 communicating the predetermined position of the orbiting conveyance section 6A with the second lifting equipment 37 of the assembly unit 3 is provided in the tower section 1B under construction. The material M on the transfer section 6A can be lifted by the second lifting equipment 37, passed through the transfer opening 13, and carried into the upper part of the tower section 1B under construction. Thus, since the conveyance opening 13 functions as a material loading path in the vertical direction, interference with other operations can be suppressed.

  Further, in the present embodiment, the conveyance direction of the portion (the second straight advance linear conveyor 64) delivered to the circulation conveyance unit 6A of the horizontal conveyance unit 6B is the direction along the radial direction of the circulation conveyance unit 6A, that is, Since it is in the slide direction, the material M conveyed by the horizontal conveyance unit 6B in the delivery units P1, P2, P3 of the circulation conveyance unit 6A is delivered to the circulation conveyance unit 6A in the same direction without changing the conveyance direction of the material M Can.

  As described above, in the construction transfer system according to the present embodiment, the material M can be efficiently transferred to the assembly unit 3 installed in the upper part of the tower portion 1B.

  The embodiment of the construction conveyance system according to the present invention has been described above, but the present invention is not limited to the above embodiment, and can be appropriately modified without departing from the scope of the present invention. It is possible to replace components in the embodiment with known components as appropriate.

  For example, in the present embodiment, in the conveyance system 6, three horizontal conveyance units 6B are provided, and three delivery units P1, P2, and P3 are provided. However, the present invention is not limited thereto. In one delivery unit, one horizontal conveyance unit 6B may be provided. In addition, although the horizontal conveyance portion 6B is disposed in the radial direction with respect to the circumferential conveyance portion 6A, the arrangement is not limited to such an arrangement.

  Moreover, although carrying-in of the material used for construction of the tower part 1B of the offshore structure 1 is made into the object of the conveyance system 6 in this Embodiment as application object of the conveyance system 6, it is not restrict | limited to this. For example, it is also possible to apply to a structure generally built on the ground. Further, in the present embodiment, the circulating conveyance unit 6A and the horizontal conveyance unit 6B are installed on the floating body structure 1A (on the ground), but for example, there is a low floor building or the like in the outer peripheral portion of the construction object In this case, the height of the low-storied roof may be the installation level.

  Moreover, in the present embodiment, although the circulation conveyance unit 6A is disposed outside the tower unit 1B (structure) to be constructed, the circulation conveyance unit 6A is disposed inside the structure to be constructed using a tower crane, for example. It may be arranged. In the present embodiment, the circulating conveyance portion 6A is disposed inside the outer peripheral lower layer portion 1D, but when such an outer peripheral lower layer portion 1D is not provided, the circuit is disposed outdoors outside the construction object. It does not matter.

  Although three assembly units (3A, 3B, 3C) are provided as the assembly unit 3, the number is not limited to this number (three units), and the number that can be installed according to the outer peripheral dimensions of the central stage 2 is It can be set. Further, in the present embodiment, the plurality of assembly units 3A, 3B, 3C are provided so as to be independently turnable in the circumferential direction independently, but three sets of turn in the circumferential direction always have the same pitch. May be synchronized.

  Further, the method of carrying the material M into the assembly units 3A, 3B, 3C is not limited to the transport system 6 as in the present embodiment. The point is that the configuration is sufficient as long as the material M can be carried into the carry-in area R2 of the second lifting equipment 37 of the assembly unit 3 capable of turning around the tower axis O.

  Further, the configuration of the offshore structure 1, that is, the configuration of the floating body structure 1A, the tower portion 1B, the ring-shaped air portion 1C, and the size, shape, material and the like of the outer peripheral low layer portion 1D is not particularly limited. The dimensions (height dimension, central angle, etc.) of the single-layer tower block in the tower portion 1B at the time of construction can also be set as appropriate. And it is also possible to apply to a structure which omitted ring-like aerial part 1C.

  In addition, without departing from the spirit of the present invention, it is possible to replace components in the above-described embodiment with known components as appropriate.

1 Offshore structure (floating offshore structure)
1A Floating Structure 1B Tower Part (Structure)
1C Ring-shaped air part 1D Outer peripheral low-layer part 2 Central stage 3, 3A, 3B, 3C assembly unit (lifting equipment)
4 float and sink 5 cable 6 transport system (transport system for construction)
6A Circumferential Transporting Unit 6B Horizontal Transporting Unit 6Ba Loading Line 6Bb Delivery Line 6Bc Switching Line 10 Oversea Construction System 11 Tower Block 13 Transport Opening 30 Assembly Unit Body 36 1st Lifting Equipment 37 2nd Lifting Equipment 60 Transporting Slider 61 Circulating Linear Conveyer 62 Circular slider 63 First straight linear conveyor 64 Second straight linear conveyor 65 Switching slider 66 Third straight linear conveyor M Material O Tower shaft P1, P2, P3 Delivery part R1 Assembly area R2 Loading area T Unloading area

Claims (6)

A construction transfer system for transferring materials to a lifting facility installed on the upper part of the structure under construction when the structure is constructed ,
An annular transfer unit provided inside or outside of the structure and extending in a ring shape for moving the material in the circumferential direction;
A horizontal transport unit provided so as to be able to be delivered to at least a part of the circulating transport unit;
Equipped with
The lifting equipment is provided so as to be able to turn around the structure, and when the material is turned above the unloading area provided in a part of the circumferential conveyance portion in the circumferential direction, the material is moved vertically. Provided to transport to
The construction conveyance system, wherein the circulating conveyance unit and the horizontal conveyance unit are arranged at the same height. The construction conveying system according to claim 1, wherein a plurality of delivery parts with the horizontal conveyance part in the circulation conveyance part are provided. The construction carrier system according to claim 1 or 2, further comprising: a transport carriage that is detachable and movable with respect to the circulating transport unit and the horizontal transport unit. The construction transfer system according to claim 3, wherein the empty transfer carriage unloaded by the lifting equipment is moved from the circulating transfer unit to the horizontal transfer unit. The said structure under construction is provided with the conveyance opening part which connects the predetermined position of the said circular conveyance part, and the said lifting equipment, The said structure in any one of the Claims 1 thru | or 4 characterized by the above-mentioned. Transport system for construction . The construction direction according to any one of claims 1 to 5, wherein a conveyance direction of a portion of the horizontal conveyance section delivered to the circumferential conveyance section is a direction along a radial direction of the circumferential conveyance section. Transport system.

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