Method of handling support devices, method of handling concrete formwork devices, support devices and concrete formwork devices

Abstract

The present invention provides a method for handling a support device, a method for handling a concrete formwork device, a support device, and a concrete formwork device that can improve convenience. [Solution] The method for handling the support device includes rotating the pair of leg units, with the upper ends of the pair of leg units connected to the girder via a rotating member, to either a first position in which the lower ends of the pair of leg units extend downward, or a second position in which the lower ends of the pair of leg units extend upward, and fixing the pair of leg units and the girder unit in the first or second position.

Description

Technical Field

[0001] The present invention relates to a method for handling a support device, a method for handling a concrete form device, a support device, and a concrete form device.

Background Art

[0002] For example, as disclosed in Patent Document 1, there is proposed a concrete form device configured to efficiently place tunnel lining concrete. The concrete form device comprises a form for forming tunnel lining concrete, and a support device that supports the form.

[0003] Such a support device comprises a pair of legs arranged side by side in the width direction of the tunnel, a girder member bridged in the width direction of the tunnel above the pair of legs, and a support member that supports the form on the upper side of the girder member.

Prior Art Literature

Patent Literature

[0004]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0005] However, in such a method for handling the support device, the pair of legs, the girder member, and the support member are separately transported to the construction site and then connected at the site. For this reason, it is desired to improve the convenience of the method for handling the support device.

Means for Solving the Problem

[0006] A method for handling a support device that solves the above problems is a method for handling a support device comprising a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports a form for shaping tunnel lining concrete when erected in the width direction of the tunnel at the upper ends of the pair of leg units, wherein the girder unit has a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form on the upper side of the girder, and the method includes rotating the pair of leg units to either a first position in which the lower ends of the pair of leg units extend downward or a second position in which the lower ends of the pair of leg units extend upward, while the upper ends of the pair of leg units and the girder are connected via a rotating member, and fixing the pair of leg units and the girder unit in the first or second position.

[0007] A method for handling a concrete formwork apparatus that solves the above problems is a method for handling a concrete formwork apparatus comprising a form for shaping tunnel lining concrete, a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports the form while being erected in the width direction of the tunnel at the upper ends of the pair of leg units, wherein the girder unit has a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form on the upper side of the girder, and the method includes rotating the pair of leg units to either a first position in which the lower ends of the pair of leg units extend downward or a second position in which the lower ends of the pair of leg units extend upward, while the upper ends of the pair of leg units and the girder are connected via a rotating member, and fixing the pair of leg units and the girder unit in the first or second position.

[0008] A support device for solving the above problems comprises a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports a form for shaping the tunnel lining concrete when erected in the width direction of the tunnel at the upper ends of the pair of leg units, wherein the girder unit has a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form above the girder, and the upper ends of the pair of leg units and the girder are connected via a rotating member, and the pair of leg units are rotatable to either a first position in which the lower ends of the pair of leg units extend downward, or a second position in which the lower ends of the pair of leg units extend upward, and the pair of leg units and the girder unit can be fixed in the first or second position.

[0009] A concrete formwork apparatus for solving the above problems comprises a form for forming tunnel lining concrete, a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports the form while being erected in the width direction of the tunnel at the upper ends of the pair of leg units, wherein the girder unit has a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form on the upper side of the girder, and the upper ends of the pair of leg units and the girder are connected via a rotating member, and the apparatus is rotatable to either a first position in which the lower ends of the pair of leg units extend downward, or a second position in which the lower ends of the pair of leg units extend upward, and the pair of leg units and the girder unit can be fixed in the first or second position. [Effects of the Invention]

[0010] According to the present invention, convenience can be improved. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a schematic diagram showing a concrete formwork apparatus according to the first embodiment. [Figure 2] Figure 2 is a perspective view showing the support device of the first embodiment. [Figure 3] Figure 3 is a perspective view showing the support device of the first embodiment. [Figure 4] Figure 4 is a perspective view showing the support device of the first embodiment. [Figure 5] Figure 5 is a perspective view showing the support device of the first embodiment. [Figure 6] Figure 6 is a perspective view showing the track of the first embodiment. [Figure 7] Figure 7 is a perspective view showing the support device of the first embodiment. [Figure 8] Figures 8(A) to 8(C) are side views showing a concrete formwork apparatus according to the first embodiment. [Figure 9] Figure 9 is a perspective view showing the support device of the first embodiment. [Figure 10] Figure 10 is a perspective view showing the support device of the first embodiment. [Modes for carrying out the invention]

[0012] [First Embodiment] The following describes the handling method of the support device, the handling method of the concrete formwork device, and one embodiment of the support device and the concrete formwork device. Hereafter, the concrete formwork device will be simply referred to as the formwork device.

[0013] <Formwork device 10> As shown in Figure 1, the formwork device 10 is used to provide lining concrete C on the inner surface of the tunnel T. Hereinafter, the direction that determines the width of the tunnel T will be referred to as the width direction X. The direction in which the tunnel T is extended will be referred to as the extension direction Y. The direction that intersects the width direction X and the extension direction Y will be referred to as the vertical direction Z.

[0014] The formwork apparatus 10 comprises a support apparatus 11 and a form 12. The support apparatus 11 is portal-shaped, but may alternatively be arch-shaped. The support apparatus 11 is a gantry that supports a plurality of forms 12. The support apparatus 11 is supported on a pair of rails R and is movable in a direction along the extension direction Y. The pair of rails R extend in the extension direction Y on the ground of the tunnel T.

[0015] The form 12 is a member for molding the lining concrete C of the tunnel T. The form 12 is supported by the support apparatus 11 so as to form an arch shape. Lining concrete C is formed by placing fresh concrete between the outer peripheral surface of the form 12 and the inner peripheral surface of the tunnel T.

[0016] The form 12 comprises a crown form 12A, side forms 12B, and an invert form 12C. The crown form 12A is provided above the support apparatus 11. The crown form 12A is supported above the support apparatus 11. The side forms 12B are connected to ends of the crown form 12A. The invert form 12C is connected to ends of the side forms 12B.

[0017] The support apparatus 11 comprises a pair of wheel units 13, a pair of first connecting members 14, and a support unit 15. The support apparatus 11 may be provided with wheel units 13 at four corners in the width direction X and the extension direction Y. The support apparatus 11 may be provided with a plurality of sets of support units 15 in the extension direction Y.

[0018] The wheel unit 13 is configured to support the first connecting member 14. The wheel unit 13 comprises a wheel 13A. The wheel 13A is supported on the rail R. The wheel unit 13 may be provided with a drive unit that drives the wheel 13A. The drive unit may be a motor.

[0019] The pair of first connecting members 14 are configured to be aligned in the width direction X. The pair of first connecting members 14 are configured to extend in the extension direction Y. The pair of first connecting members 14 are supported by the wheel unit 13. The pair of first connecting members 14 are configured to support the support unit 15.

[0020] The support unit 15 is configured to support the form 12. The support unit 15 is supported by a pair of first connecting members 14. In other words, the support unit 15 is supported by a pair of wheel units 13 via a pair of first connecting members 14.

[0021] The support unit 15 comprises a pair of leg units 16 and a girder unit 20. In other words, the support device 11 comprises a pair of leg units 16 and a girder unit 20.

[0022] A pair of leg units 16 are arranged to be aligned in the width direction X of the tunnel T. Each of the leg units 16 is supported by a wheel unit 13. The pair of leg units 16 are configured to support the girder unit 20. The leg units 16 are units that extend in the vertical direction Z.

[0023] The leg unit 16 may include a leg body 17, an internal stay 18, and an external stay 19. The leg body 17 is configured to extend in the vertical direction Z. The leg body 17 is configured to support the girder unit 20 from below.

[0024] The internal stay 18 is connected to the leg body 17 inward in the width direction X. The internal stay 18 is configured to support the beam unit 20 inside the leg body 17. The internal stay 18 may be detachable from the leg body 17.

[0025] The external stay 19 is connected to the leg body 17 on the outside in the width direction X. The external stay 19 is configured to support the girder unit 20 on the outside of the leg body 17. The external stay 19 may be detachable from the leg body 17.

[0026] The girder unit 20 is configured to support the form 12 when it is erected in the width direction X of the tunnel T at the upper ends 16A of a pair of leg units 16. The girder unit 20 is configured to support the top form 12A.

[0027] The girder unit 20 comprises a girder 21 and support members 22. The girder unit 20 may have multiple support members 22. The girder 21 is supported by a pair of leg units 16. The girder 21 is a beam. The girder 21 is erected in the width direction X of the tunnel T at the upper ends 16A of the pair of leg units 16.

[0028] The girder member 21 is connected to the upper end portion 16A of the pair of leg units 16 on the upper side of the leg units 16. More specifically, the girder member 21 is connected to the leg body 17, the internal stay 18, and the external stay 19 on the upper side of the leg body 17, the internal stay 18, and the external stay 19. The girder member 21 supports the ceiling form 12A via the support member 22.

[0029] The support member 22 is configured to support the form 12 above the girder member 21. The support member 22 is configured to extend upward from the girder member 21. The support member 22 is connected to the girder member 21 above the girder member 21, but may be configured integrally with the girder member 21. The support member 22 supports the top form 12A.

[0030] <How to handle the support device 11> Here, we will explain in detail how to handle the support device 11. In the support device 11, the support unit 15 is loaded onto a truck TR after preparation for transport is carried out at the transport source. The support unit 15 is transported from the transport source to the tunnel T site by the truck TR and then installed at the site. The support unit 15 is dismantled at the site and then transported from the site back to the transport source by the truck TR. The support unit 15 is unloaded from the truck TR at the transport source.

[0031] As shown in Figure 2, to explain in detail, a pair of retaining walls 30 are installed at the source of transport. The pair of retaining walls 30 are installed so as to be aligned in the width direction X. A first fixing member 31 is attached to the first end of one of the retaining walls 30. A first fixing member 31 (not shown) is attached to the second end of the other retaining wall 30. The second end is the end opposite to the first end. By attaching the first fixing member 31 to each of the pair of retaining walls 30, the pair of retaining walls 30 can be stabilized.

[0032] A pair of retaining wall members 30 have a girder unit 20 installed from above. The girder unit 20 is fixed to the pair of retaining wall members 30 by a second fixing member 32 such that a support member 22 extends upward from the girder 21.

[0033] The girder unit 20 is fixed to a pair of retaining members 30 with the support member 22 connected to the girder 21, but the support member 22 may be connected to the girder 21 after the girder 21 has been fixed to the pair of retaining members 30.

[0034] As shown in Figure 3, a pair of leg units 16 are connected to the girder unit 20. In the pair of leg units 16, the upper end 16A is connected to the girder 21. The pair of leg units 16 are connected to the girder unit 20 such that the lower end 16B is extended in the direction Y.

[0035] A pair of leg units 16 are connected to the girder unit 20 via a rotating member 33. The rotating member 33 rotatably connects each of the leg units 16 to the girder unit 20 about an axis along the width direction X. The rotating member 33 may include a hinge structure. In this way, the upper ends 16A of the pair of leg units 16 and the girder 21 are rotatably connected via the rotating member 33.

[0036] The rotating member 33 may include a first rotating member that rotatably connects the leg body 17 and the girder 21, a second rotating member that rotatably connects the internal stay 18 and the girder 21, and a third rotating member that rotatably connects the external stay 19 and the girder 21.

[0037] The rotating member 33 is attached to the girder unit 20, and then to each of the pair of leg units 16. Alternatively, the rotating member 33 may be attached to the girder unit 20 after being attached to each of the pair of leg units 16.

[0038] As shown in Figure 4, the pair of leg units 16 are rotated relative to the girder unit 20 via the rotating member 33. The pair of leg units 16 are rotated so that their lower ends 16B face upward. As a result, the pair of leg units 16 are positioned along the support member 22 via the rotating member 33.

[0039] Thus, the support unit 15 assumes a second posture in which the lower ends 16B of the pair of leg units 16 extend upward, with the upper ends 16A of the pair of leg units 16 connected to the beam member 21 via the rotating member 33. In other words, the support unit 15 is rotatable to the second posture.

[0040] As shown in Figure 5, the first fixing members 31 are removed from each of the pair of retaining members 30. The first fixing members 31 are connected to the pair of leg units 16 and the girder unit 20 at both ends along the width direction X of the support unit 15.

[0041] As a result, the support unit 15 is fixed in the second position by the first fixing member 31, with the pair of leg units 16 and the girder unit 20 fixed together. The second fixing member 32 is removed from the girder unit 20 and the pair of retaining members 30. As a result, the girder unit 20 becomes detachable from the pair of retaining members 30.

[0042] As shown in Figure 6, the support unit 15 is loaded onto the truck bed TR in the second orientation. The support unit 15 can be loaded onto the truck bed TR such that its width X is aligned with the length of the truck TR. Two support units 15 may be loaded onto the truck bed TR.

[0043] The support unit 15 is transported from the source to the site by truck TR. In this manner, the support unit 15 is transported with the pair of leg units 16 and the girder unit 20 fixed in the second position.

[0044] As shown in Figures 3 to 5, at the site, the support unit 15 is handled in the reverse order of preparation for transport at the source. Specifically, as shown in Figure 5, a pair of retaining wall members 30 are installed at the site. The support unit 15 is installed on the pair of retaining wall members 30 from the truck TR.

[0045] As shown in Figure 4, the support unit 15 is fixed to the pair of retaining members 30 by the second fixing member 32. The first fixing member 31 is removed from the support unit 15. This releases the support unit 15 from the fixing of the pair of leg units 16 and the girder unit 20 in the second position. The first fixing member 31 is attached to the pair of retaining members 30.

[0046] As shown in Figure 3, the rotating member 33 is attached to the pair of leg units 16 and the girder unit 20. In the support unit 15, the pair of leg units 16 are rotated relative to the girder unit 20 via the rotating member 33. The pair of leg units 16 are rotated relative to the girder unit 20 such that their lower ends 16B are aligned with the extension direction Y.

[0047] As shown in Figure 7, in the support unit 15, the girder unit 20 is detached from the pair of retaining members 30. The girder unit 20 is rotated relative to the pair of leg units 16 via the rotating member 33. The girder unit 20 is rotated relative to the pair of leg units 16 so that it is in the same plane as the pair of leg units 16.

[0048] In this way, the support unit 15 is in a first position where the upper ends 16A of the pair of leg units 16 extend upward, with the upper ends 16A of the pair of leg units 16 extending upward, and the upper ends 16A of the pair of leg units 16 connected to the girder 21 via the rotating member 33. In other words, the pair of leg units 16 and the girder unit 20 are rotated from the second position to the first position.

[0049] The pair of leg units 16 and the girder unit 20 are fixed together by fixing members (not shown). More specifically, the upper ends 16A of the pair of leg units 16 and the girder 21 are fixed together by fasteners (not shown). The fasteners are, but are not limited to, high-strength bolts.

[0050] In this way, the pair of leg units 16 and the girder unit 20, which have been rotated to the first position, are fixed in the support unit 15. The rotating member 33 may be removed from the support unit 15. The support unit 15 is rotatable to either the first position or the second position with the upper ends 16A of the pair of leg units 16 and the girder 21 connected via the rotating member 33.

[0051] As shown in Figure 8(A), a pair of first connecting members 14 are installed at the site. Multiple support units 15 are fixed to the pair of first connecting members 14 so as to be aligned in the extension direction Y. The support units 15 are erected in the vertical direction Z.

[0052] An outrigger support unit 40 may be fixed to the pair of first connecting members 14. The outrigger support unit 40 may be fixed second from the outside in the extension direction Y.

[0053] Thus, one support unit 15, an outrigger support unit 40, and two support units 15 are fixed to the pair of first connecting members 14 in the order from the outside in the extension direction Y. Before the support units 15 and outrigger support units 40 are fixed to the pair of first connecting members 14, second connecting members 42 may be attached to the support units 15 and outrigger support units 40, respectively.

[0054] As shown in Figures 9 and 10, the outrigger support unit 40 may comprise a pair of outrigger leg units 41 and a girder unit 20. As shown in Figure 9, the pair of outrigger leg units 41 are fixed to a pair of first connecting members 14. As shown in Figure 10, the girder unit 20 is fixed on the pair of outrigger leg units 41.

[0055] As shown in Figure 8(B), the top form 12A is fixed to the support unit 15 and the outrigger support unit 40. This provides support for the top form 12A from the support unit 15 and the outrigger support unit 40.

[0056] In addition, a pair of first connecting members 14 are installed in the extension direction Y. Multiple support units 15 and an outrigger support unit 40 are fixed to the pair of first connecting members 14. The top form 12A is fixed onto the support units 15 and the outrigger support unit 40. As a result, the support units 15 and the outrigger support unit 40 support the top form 12A.

[0057] As shown in Figure 8(C), after the pair of first connecting members 14, the support unit 15, the outrigger support unit 40, and the top form 12A are raised, the pair of wheel units 13 move along the rail R. The pair of first connecting members 14 are connected on the pair of wheel units 13.

[0058] Subsequently, the side form 12B is connected to the top form 12A. The invert form 12C is then connected to the side form 12B. This completes the construction of the formwork device 10 on site.

[0059] The dismantling of the formwork device 10 is carried out in the reverse order of its construction. In particular, the support unit 15 is removed from the first connecting member 14 and then installed above the pair of retaining members 30. The first fixing member 31 is attached to the pair of retaining members 30.

[0060] As shown in Figure 7, in the support unit 15, a rotating member 33 is attached to the pair of leg units 16 and the girder unit 20 in the first position. Fixing members (not shown) are removed from the pair of leg units 16 and the girder unit 20 in the first position. This releases the fixing between the pair of leg units 16 and the girder unit 20 in the first position.

[0061] As shown in Figure 3, the girder unit 20 is rotated relative to a pair of leg units 16 along the vertical direction Z. The girder unit 20 is fixed to a pair of retaining members 30 by a second fixing member 32.

[0062] As shown in Figure 4, the pair of leg units 16 are rotated relative to the girder unit 20. The pair of leg units 16 assume a second position in which their lower ends 16B extend upward. In other words, the pair of leg units 16 and the girder unit 20 are rotated from the first position to the second position.

[0063] As shown in Figure 5, the first fixing member 31 is removed from the pair of retaining members 30. The first fixing member 31 is then fixed to the support unit 15. This fixes the pair of leg units 16 and the girder unit 20, which have been rotated to the second position. The girder unit 20 is then removed from the pair of retaining members 30.

[0064] As shown in Figure 6, the support unit 15, which has changed from the first position to the second position, is loaded onto the truck TR. The support unit 15 is transported from the site to the transport source by the truck TR. In this way, the support unit 15 is transported with the pair of leg units 16 and the girder unit 20 fixed in the second position.

[0065] <Operation and Effects of the First Embodiment> The operation and effects of the first embodiment will now be described. (1) The support unit 15 is rotatable to either a first or second position. The first position is one in which the upper ends 16A of the pair of leg units 16 and the girder 21 are connected via a rotating member 33, and the lower ends 16B of the pair of leg units 16 extend downward. The second position is one in which the upper ends 16A of the pair of leg units 16 and the girder 21 are connected via a rotating member 33, and the lower ends 16B of the pair of leg units 16 extend upward. The pair of leg units 16 and the girder unit 20 are fixed in either the first or second position. With this configuration, the support unit 15 is rotatable to a first position for supporting the ceiling form 12A and to a second position that allows for space saving. This improves the transportability of the support unit 15 and improves the workability of handling the support device 11 on site, thereby shortening the construction period. Therefore, the convenience of handling the support device 11 can be improved.

[0066] (2) With the pair of leg units 16 and the girder unit 20 fixed in the second position, the pair of leg units 16 and the girder unit 20 are transported. This configuration improves the transportability of the support unit 15 between the transport source and the site. Therefore, the handling method of the support device 11 can be improved.

[0067] (3) The pair of leg units 16 and the girder unit 20 can be fixed after being rotated from the second position to the first position. This configuration improves the workability of constructing the support device 11 on site, thereby shortening the construction period. Therefore, the handling method of the support device 11 can be improved.

[0068] (4) The pair of leg units 16 and the girder unit 20 can be fixed after being rotated from the first position to the second position. With this configuration, the workability of dismantling the support device 11 on site can be improved, thereby shortening the construction period. Therefore, the handling method of the support device 11 can be improved.

[0069] (5) The first fixing member 31 fixes the pair of leg units 16 and the girder unit 20 in the second position. The first fixing member 31 is attached to the pair of retaining members 30 when handling the support unit 15. With this configuration, by using the first fixing member 31 for both purposes, it is possible to stabilize both the pair of leg units 16 and the girder unit 20 in the second position and the pair of retaining members 30.

[0070] [Example of changes] This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0071] The leg unit 16 does not necessarily have to include at least one of the leg body 17, the internal stay 18, and the external stay 19. The leg unit 16 may consist of only one of the leg body 17, the internal stay 18, and the external stay 19.

[0072] The outrigger support unit 40, like the support unit 15, may be in either a first or second position by rotating relative to the girder unit 20. Part or all of the pair of outrigger leg units 41 and the girder unit 20 may be rotatable between the first and second positions. The support device 11 does not have to include the outrigger support unit 40. In this case, the support device 11 may include the support unit 15 instead of the outrigger support unit 40.

[0073] The support member 22 does not have to extend upward relative to the girder member 21, as long as it is configured to extend upward relative to the girder member 21. The support member 22 may be separate from the girder member 21 or may be integrated with the girder member 21. Multiple support members 22 may include members that are separate from the girder member 21 and members that are integrated with the girder member 21. The girder member unit 20 may have at least one support member 22.

[0074] The support unit 15 does not have a rotating member 33, but it may have a rotating member 33. The rotating member 33 is rotatably attached to both the leg unit 16 and the girder unit 20, but it does not have to be detached from at least one of the leg unit 16 and the girder unit 20.

[0075] The connection order of the various components of the support device 11 can be any order. In particular, the handling order of the support unit 15 can also be any order. The support unit 15 may be transported between the transport source and the site by a transport body other than the truck TR.

[0076] As used herein, the expression "at least one of" means one or more of the desired options. For example, as used herein, if there are two options, the expression "at least one of" means either one option or both of the two options. As another example, as used herein, if there are three or more options, the expression "at least one of" means either one option or any combination of two or more options.

[0077] [Note] The technical concepts derived from the embodiments and modifications described above are outlined below. These technical concepts can be combined with each other to the extent that they do not contradict each other.

[0078] [1] A method for handling a support device comprising a pair of leg units arranged in the width direction of a tunnel, and a girder unit that supports a form for shaping tunnel lining concrete when erected in the width direction of the tunnel at the upper ends of the pair of leg units, wherein the girder unit has a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form on the upper side of the girder, and the method includes rotating the pair of leg units to either a first position in which the lower ends of the pair of leg units extend downward or a second position in which the lower ends of the pair of leg units extend upward, while the upper ends of the pair of leg units and the girder are connected via a rotating member, and fixing the pair of leg units and the girder unit in the first or second position.

[0079] [2] The method for handling the support device described above includes transporting the pair of leg units and the girder unit while the pair of leg units and the girder unit are fixed in the second position.

[0080] [3] The method for handling the support device includes releasing the fixation between the pair of leg units and the girder unit in the second position, rotating the pair of leg units and the girder unit from the second position to the first position, and fixing the pair of leg units and the girder unit that have been rotated to the first position.

[0081] [4] The method for handling the support device includes releasing the fixation between the pair of leg units and the girder unit in the first position, rotating the pair of leg units and the girder unit from the first position to the second position, and fixing the pair of leg units and the girder unit that have been rotated to the second position.

[0082] [5] A method for handling a concrete formwork apparatus comprises a form for forming tunnel lining concrete, a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports the form while being erected in the width direction of the tunnel at the upper ends of the pair of leg units, wherein the girder unit has a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form on the upper side of the girder, and the method includes rotating the pair of leg units to either a first position in which the lower ends of the pair of leg units extend downward or a second position in which the lower ends of the pair of leg units extend upward, while the upper ends of the pair of leg units and the girder are connected via a rotating member, and fixing the pair of leg units and the girder unit in the first or second position.

[0083] [6] The support device comprises a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports a form for shaping the tunnel lining concrete when erected in the width direction of the tunnel at the upper ends of the pair of leg units, wherein the girder unit has a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form above the girder, and the upper ends of the pair of leg units and the girder are connected via a rotating member, and the pair of leg units are rotatable to either a first position in which the lower ends of the pair of leg units extend downward, or a second position in which the lower ends of the pair of leg units extend upward, and the pair of leg units and the girder unit can be fixed in the first position or the second position.

[0084] [7] The concrete formwork apparatus comprises a form for forming tunnel lining concrete, a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports the form while being erected in the width direction of the tunnel at the upper ends of the pair of leg units, wherein the girder unit has a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form on the upper side of the girder, and the upper ends of the pair of leg units and the girder are connected via a rotating member, and the pair of leg units are rotatable to either a first position in which the lower ends of the pair of leg units extend downward, or a second position in which the lower ends of the pair of leg units extend upward, and the pair of leg units and the girder unit can be fixed in the first position or the second position. [Explanation of symbols]

[0085] 10...Formwork device, 11...Support device, 12...Form, 15...Support unit, 16...Leg unit, 16A...Upper end, 16B...Lower end, 20...Girder unit, 21...Girder, 22...Support member, 33...Rotating member.

Claims

1. A method for handling a support device comprising a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports a form for shaping the tunnel lining concrete when erected in the width direction of the tunnel at the upper ends of the pair of leg units, The girder unit comprises a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form above the girder. With the upper ends of the pair of leg units and the beam connected via a rotating member, the pair of leg units are rotated to either a first position in which the lower ends of the pair of leg units extend downward, or a second position in which the lower ends of the pair of leg units extend upward. A method for handling a support device, comprising fixing the pair of leg units and the girder unit in the first or second posture.

2. A method for handling the support device according to claim 1, A method for handling a support device, comprising transporting the pair of leg units and the girder unit while the pair of leg units and the girder unit are fixed in the second position.

3. A method for handling the support device according to claim 1 or claim 2, Releasing the fixation between the pair of leg units and the beam unit in the second posture, Rotating the pair of leg units and the beam unit from the second position to the first position, A method for handling a support device, comprising fixing the pair of leg units and the beam unit that have been rotated to the first position.

4. A method for handling the support device according to claim 1 or claim 2, Releasing the fixation between the pair of leg units and the beam unit in the first posture, Rotating the pair of leg units and the beam unit from the first position to the second position, A method for handling a support device, comprising fixing the pair of leg units and the beam unit that have been rotated to the second position.

5. A method for handling a concrete formwork apparatus comprising a form for shaping tunnel lining concrete, a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports the form while being erected in the width direction of the tunnel at the upper ends of the pair of leg units, The girder unit comprises a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form above the girder. With the upper ends of the pair of leg units and the beam connected via a rotating member, the pair of leg units are rotated to either a first position in which the lower ends of the pair of leg units extend downward, or a second position in which the lower ends of the pair of leg units extend upward. A method for handling a concrete formwork apparatus, comprising fixing the pair of leg units and the girder unit in the first or second position.

6. A support device comprising a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports a form for shaping the tunnel lining concrete when erected in the width direction of the tunnel at the upper ends of the pair of leg units, The girder unit comprises a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form above the girder. With the upper ends of the pair of leg units and the beam connected via a rotating member, the pair of leg units can rotate to either a first position in which the lower ends of the pair of leg units extend downward, or a second position in which the lower ends of the pair of leg units extend upward. A support device capable of fixing the pair of leg units and the girder unit in the first or second posture.

7. A concrete formwork apparatus comprising a form for shaping tunnel lining concrete, a pair of leg units arranged in the width direction of the tunnel, and a girder unit that supports the form while being erected in the width direction of the tunnel at the upper ends of the pair of leg units, The girder unit comprises a girder that is erected in the width direction of the tunnel at the upper ends of the pair of leg units, and a support member that supports the form above the girder. With the upper ends of the pair of leg units and the beam connected via a rotating member, the pair of leg units can rotate to either a first position in which the lower ends of the pair of leg units extend downward, or a second position in which the lower ends of the pair of leg units extend upward. A concrete formwork device capable of fixing the pair of leg units and the girder unit in the first or second position.

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