Scaffold device and scaffold construction method

Abstract

To provide a scaffold device which can be simply installed in a structure, and can shorten a construction period and reduce a cost, and a scaffold construction method.SOLUTION: A scaffold device 2 includes a plurality of receiving members 4 fixed to a structure, and a scaffold unit 5 which is mounted on the structure through the receiving members 4. The scaffold unit 5 has a scaffold member 52, a frame structure 51 supporting the scaffold member 52, and a plurality of engagement members 53 which is fixed to the upper part of the frame structure 51. The scaffold unit 5 is mounted on the structure by engaging the engagement members 53 with the receiving members 4.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a scaffolding device and a scaffolding construction method using the scaffolding device. [Background technology]

[0002] When working at heights in the construction of structures, etc., scaffolding may be set up around the structure to ensure work space. For example, Patent Document 1 discloses scaffolding set up on the front, back, left and right sides of a building from the ground toward the roof. On the other hand, when constructing large structures such as tower structures, bridge piers, and high-rise buildings, assembling scaffolding from the ground requires time and expense. Also, there are cases where it is not possible to secure land on the ground to build large-scale scaffolding.

[0003] For this reason, scaffolding is sometimes installed on the structure itself to ensure a work space at high altitudes. For example, Patent Document 2 discloses a scaffolding device that includes a roof-shaped roof frame detachably assembled to the top of the structure via receiving metal fittings, a covering material that covers the upper surface of the roof frame, work scaffolding arranged around the periphery of the structure, and side curing sheets hanging down from the roof frame. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-167813 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-061393 Summary of the Invention [Problem to be solved by the invention]

[0005] The scaffolding system of Patent Document 2 requires the roof frame to be installed on the top of the structure, which limits the types of structures that it can be installed on. Also, the scaffolding system of Patent Document 2 requires the roof frame and scaffolding to be fixed separately to the structure, which is time-consuming.

[0006] An object of the present invention is to provide a scaffolding device and a scaffolding construction method that can be easily installed on a structure and that can shorten construction time and reduce costs. [Means for solving the problem]

[0007] The scaffolding device of the present invention, which solves the above-mentioned problems, includes a plurality of support members fixed to a structure, and a scaffolding unit attached to the structure via the support members. The scaffolding unit includes scaffolding members, a frame structure supporting the scaffolding members, and a plurality of locking members that can be locked to the support members fixed to the upper part of the frame structure.

[0008] A scaffolding construction method using this scaffolding device involves scaffolding installation work in which a pair of scaffolding units are installed facing each other across a structure, and frame connection work in which the scaffolding units are connected to each other at the bottom of the frame structure.

[0009] According to this scaffolding device and scaffolding construction method, by engaging a locking member with a receiving member fixed to a structure, a pre-assembled scaffolding unit can be installed on the structure, thereby easily constructing the scaffolding. This reduces the time required to construct the scaffolding and the associated costs. The scaffolding units are detachable from the structure, so they can be reused. It is preferable that a pair of scaffolding units facing each other across the structure are connected at their lower parts. In this way, the pair of scaffolding units are prevented from separating from each other at their lower parts, improving stability.

[0010] When the frame structure is provided with a stopper that grips the base member together with the locking member locked to the base member, the locking member is locked to the base member and the stopper is brought into contact with the underside of the base member during the scaffolding installation work. In this way, the base member is gripped by the locking member and the stopper, reducing shaking (swaying) of the scaffolding unit and improving stability.

[0011] By providing a roof frame formed on the frame structure, a roof sheet covering the upper surfaces of the pair of scaffolding units via the roof frame, and side sheets covering the outer surfaces of the pair of scaffolding units, work can be performed on the scaffold while being protected from wind and rain. The roof frame may be formed in a frame shape in advance, or may be formed after the scaffolding units are installed on the structure. If the structure is a steel pipe, a slit may be formed in the side sheet through which the steel pipe can be passed, and the side sheet may be installed with the steel pipe inserted into the slit. Furthermore, by installing an air tube around the steel pipe through the side sheet, airtightness can be improved. In this case, the air tube can be protected by wrapping a portion of the side sheet around the air tube. [Effects of the Invention]

[0012] The scaffolding device and scaffolding construction method of the present invention can be easily installed on a structure, thereby making it possible to shorten construction time and reduce costs. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view showing a floating foundation. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is a front view showing an outline of the air tube. [Figure 7] 1 is a flowchart showing the steps of a scaffold construction method. [Figure 8] FIG. 10 is a front view showing the installation status of the scaffolding unit. [Figure 9] 10A and 10B are front views showing the construction status of the second side sheet installation work, where (a) is when the side sheet is being placed and (b) is when the side sheet is being installed. DETAILED DESCRIPTION OF THE INVENTION

[0014] In this embodiment, construction of a floating foundation 1 for a wind power generation facility will be described. FIG. 1 shows the floating foundation 1. As shown in FIG. 1, the floating foundation 1 of this embodiment is formed by joining three columns 11, 11, 11 with beams 12. The beams 12 are made of steel pipes and are welded to beam joints 13 formed on the sides of the columns 11. In the floating foundation 1 of this embodiment, two horizontal beams 14, 14 (upper and lower) and a diagonal beam 15 provided between the upper and lower horizontal beams 14, 14 are joined to the column 11. The column 11 is formed with beam joints 13 corresponding to the two horizontal beams 14, 14 and the diagonal beam 15, respectively. In other words, the columns 11 are connected to each other by beams 12 provided in a truss shape. The work of joining the upper horizontal beam 14 and the diagonal beam 15 to the beam joints 13 is performed by installing a scaffolding device 2 at the beam joints 13.

[0015] When joining the beam 12 to the column 11, a scaffolding device 2 (unit-type curing compartment scaffolding) is used to form a scaffolding around the beam joint 13 to ensure a work space. Figures 2 and 3 show the scaffolding device 2. Sheet material 3 is placed around the scaffolding (scaffolding device 2) to suppress the effects of wind, rain, etc., creating a curing compartment for the work space. The sheet material 3 has a windbreak function and is fire-resistant during welding. Figure 2 shows the scaffolding device 2. As shown in Figure 2, the scaffolding device 2 is formed to surround the beam joint 13.

[0016] The scaffolding device 2 includes a plurality of support members 4 fixed to beam joints 13 (steel pipes protruding from the side surfaces of the column 11) of the column 11, and scaffolding units 5 attached to the column 11 (beam joints 13) via the support members 4. In this embodiment, a pair of scaffolding units 5, 5 face each other with the beam joints 13 in between.

[0017] The support member 4 is a member for locking the scaffolding unit 5 and is fixed to the beam joint 13. The support member 4 is shown in FIG. 4. As shown in FIG. 4, the support member 4 of this embodiment includes a main body 41 to which the locking member 53 of the scaffolding unit 5 is locked, a protrusion 42 formed at the upper end of the main body 41, and a fixing portion 43 for fixing the main body 41. The main body 41 is made of an L-shaped steel having a vertical plate and a horizontal plate. The tip of the horizontal plate abuts the outer surface of the beam joint 13, and the vertical plate is erected at the base end of the horizontal plate. The fixing portion 43 is made of a steel plate welded to the outer surface of the beam joint 13. The fixing portion 43 is welded to the vertical plate and the horizontal plate of the main body 41. The protrusion 42 is made of a steel rod welded to the upper end of the vertical member of the main body 41, and forms a step at the upper end of the vertical member to lock the locking member 53 (to prevent it from slipping out).

[0018] As shown in FIGS. 2 and 3, the scaffolding unit 5 has a frame structure 51, a scaffolding member 52, a plurality of locking members 53, and a plurality of stoppers . The frame structure 51 is a platform that supports the scaffolding members 52, and is formed by combining steel materials. The frame structure 51 is formed by combining vertical members (columns 511) and horizontal members (beams 512). The frame structure 51 has a beam 512 that protrudes toward the other scaffolding unit 5 below the beam joint 13. The frame structures 51 facing each other across the beam joint 13 are connected by bolting the end faces of the beams 512 together with each other. The frame structure 51 has sufficient rigidity to prevent significant deformation even when lifted together with the scaffolding members 52 by a crane.

[0019] The scaffolding members 52 are assembled while being supported by the frame structure 51. The scaffolding members 52 are formed by combining building frames, scaffolding boards, diagonal braces, single-tube pipes, etc. The scaffolding members 52 are fixed to the columns 511 and beams 512 that make up the frame structure 51 via jigs. The scaffolding members 52 are supported by the frame structure 51, and the weight of the scaffolding members 52 and the load acting on the scaffolding members 52 are transmitted to the frame structure 51.

[0020] The locking member 53 is fixed to the upper part of the frame structure 51 and can be locked to the receiver member 4. Fig. 4 shows the locking member 53. As shown in Fig. 4, the locking member 53 of this embodiment is formed by processing a steel plate and has a hook 531 that can be locked to the receiver member 4. A recess 532 is formed in the hook 531, and the locking member 53 is locked to the receiver member 4 by inserting the protrusion 42 into the recess 532 with the tip of the hook 531 abutting against the vertical member of the receiver member 4.

[0021] The stopper 54 is attached to the frame structure 51 below the locking member 53. The stopper 54 is made of an L-shaped steel with a vertical piece and a horizontal piece, and is bolted to the frame structure 51 with one piece abutting against the frame structure 51. An elongated hole is formed in one piece of the stopper 54, and the stopper 54 is attached to the frame structure 51 by a bolt that is inserted through the elongated hole so that the stopper 54 can slide up and down relative to the frame structure 51. When the locking member 53 is locked to the receiving member 4, the stopper 54 is raised and abuts against the underside of the main body 41 of the receiving member 4, thereby gripping the receiving member 4 together with the locking member 53.

[0022] The frame structure 51 is provided with a cushioning material 55 at the contact point with the beam joint 13. The cushioning material 55 is made of, for example, a rubber plate, and is fixed to the frame structure 51 with an adhesive. In this embodiment, the cushioning material 55 is provided below the stopper 54.

[0023] The sheet material 3 covers the top, sides, and bottom of the scaffolding device 2. Figure 5 shows the sheet material 3. A roof sheet 31 covering the top surface of the scaffolding device 2 is supported by a roof frame 6. The roof frame 6 is formed on a frame structure 51 as shown in Figures 2 and 3. The roof frame 6 supports the roof sheet 31 (sheet material 3) covering the top surfaces of a pair of scaffolding units 5, 5. A plurality of grommets are formed on the edges of the roof sheet 31, and the roof sheet 31 is fixed to the roof frame 6 by passing string through these grommets and tying it to the roof frame 6. The method for fixing the roof sheet 31 is not limited, and it may be fixed, for example, using a jig.

[0024] The side sheet 32 ​​covers the outer peripheral surfaces of a pair of scaffolding units 5 (see FIG. 5). The side sheet 32 ​​has multiple grommets formed on its edges, and the side sheet 32 ​​is fixed to the scaffolding unit 5 by passing a string through the grommets and tying it to the frame structure 51 or a scaffolding member 52. As shown in FIG. 6, the side sheet 32 ​​has slits (through holes 322 and slits 321 extending from the through holes 322 to the edges) formed in correspondence with the position of the steel pipe (beam joint 13 or beam 12) through which the steel pipe can pass. An air tube 33 is provided around the steel pipe inserted through the side sheet 32. A portion of the air tube 33 is wrapped around the side sheet 32. The gap between the steel pipe and the side sheet 32 ​​is sealed by the air tube 33. The side sheet 32 ​​also has multiple openable windows 35 formed therein, allowing for dehumidification and ventilation of the interior. The windows 35 can be opened and closed using a zipper or the like.

[0025] The scaffolding construction method will be described below. The steps of the scaffolding construction method are shown in Figure 7. As shown in Figure 7, the scaffolding construction method includes a preparation step S1, a scaffold formation step S2, and a curing step S3. In the preparation step S1, a scaffolding unit 5 is formed (scaffolding unit formation work S11), and side sheets 32 and bottom sheets 36 are installed on the side (outer side) and bottom surfaces of the scaffolding unit 5 (first side surface installation work S12). At this time, the side sheets 32 are not installed on the surfaces of the scaffolding unit 5 on the column 11 side and the beam 12 side, and are left open.

[0026] In the scaffolding formation step S2, scaffolding installation work S21 and frame connection work S22 are performed. In the scaffolding installation work S21, a crane is used to lift the scaffolding units 5, and a pair of scaffolding units 5 is installed facing each other with the structure in between (see FIG. 2). When lifting the scaffolding units 5, a lifting wire is connected to the frame structure 51. In the scaffolding installation work S21, as shown in FIG. 4, the locking member 53 is locked to the receiving member 4, and the stopper 54 provided below the locking member 53 is slid upward to abut against the underside of the receiving member 4. In this way, the receiving member 4 is gripped by the locking member 53 and the stopper 54.

[0027] In the frame connecting work S22, the scaffolding units 5 are connected to each other at the lower parts of the frame structures 51, 51 (see FIG. 2). In this embodiment, the frame structures 51 are joined to each other with high-strength friction bolts.

[0028] In the curing step S3, a roof frame forming operation S31, a roof sheet installation operation S32, and a second side surface sheet installation operation S33 are carried out. In the roof frame formation work S31, the roof frame 6 is formed on the frame structure 51. In this embodiment, the roof frame 6 is formed in a triangular shape when viewed from the front by combining single-pipe pipes or the like. The roof frame 6 is formed to straddle the left and right scaffolding units 5, 5. The roof frame 6 may be pre-assembled on the ground and fixed onto the frame structure 51, or it may be assembled on the frame structure 51.

[0029] During roof sheet installation work, S32 covers the top of a pair of scaffolding units 5, 5 with a roof sheet 31. The roof sheet 31 is fixed to the roof frame 6. The lower end of the roof sheet 31 covers the outer surface of the upper end of the side sheet 32. As shown in Figure 5, the roof sheet 31 is formed by bonding together multiple separate sheets 34 that are large enough and heavy enough to be handled by hand. The sheets are joined together using an easily detachable joining method, for example, zippers, hook-and-loop fasteners, etc.

[0030] In the second side sheet installation work S33, the column 11-side and beam 12-side surfaces of the scaffolding device 2 are covered with the side sheet 32. In the second side sheet installation work S33, a steel pipe (beam joint 13) is inserted through the slits (through holes 322 and slits 321) formed in the side sheet 32. The side sheet 32 ​​is formed by laminating together multiple sheets that are large enough and heavy enough to be handled manually. As shown in FIG. 9(a), the side sheet 32 ​​is attached in a rolled state to the left and right scaffolding units 5, 5 (beams 512, 512) arranged above the beam joint 13, and then unfolded and hung down as shown in FIG. 9(b). At this time, the steel pipe is inserted using the slits 321.

[0031] An air tube 33 is installed in advance on the side sheet 32, and is installed around the steel pipe when the side sheet 32 ​​is installed. The air tube 33 is installed with a portion of the side sheet 32 ​​wrapped around it. The air tube 33 is C-shaped with a slit 331, and is installed around the beam joint 13 using the slit 331, and then the ends are butted together and fixed. After the air tube 33 is wrapped around the beam joint 13, air is supplied to the air tube 33 to inflate it. Inflating the air tube 33 seals the area around the beam joint 13.

[0032] According to the scaffolding device 2 and scaffolding construction method of this embodiment, the scaffolding unit 5, which has been pre-assembled on the ground, can be installed on the structure by engaging the locking member 53 with the receiving member 4 fixed to the structure (beam joint 13), thereby easily constructing the scaffolding. This reduces the time required to construct the scaffolding, and the associated costs. Even when work is required at high altitudes, there is no need to assemble the scaffolding from the ground.

[0033] The scaffolding unit 5 can be attached to and detached from the structure, and therefore can be reused. The scaffolding members 52 are supported by the frame structure 51, so there is no need to assemble or disassemble the scaffolding members 52 every time the scaffolding unit 5 is attached to or detached from the structure. Since the receiving member 4 is gripped by the locking member 53 and the stopper 54, the shaking (swaying) of the scaffolding unit 5 can be reduced, thereby improving stability. The scaffolding units 5 that face each other across the structure are connected at their lower parts, which prevents the pair of scaffolding units 5, 5 from moving apart at their lower parts, improving stability.

[0034] The scaffolding device 2 is covered with the sheet material 3, so welding and painting work can be carried out while being protected from wind and rain. Also, ventilation and dehumidification can be achieved by supplying air from an air conditioner inside as needed. By forming a slit (321) in the side sheet 32 ​​that allows the beam joint 13 or beam 12 to pass through, the side sheet 32 ​​can be installed with the beam joint 13 or beam 12 inserted. Also, airtightness is ensured by installing an air tube 33 around the beam joint 13 or beam 12 that passes through the side sheet 32. Furthermore, the air tube 33 is partially wrapped around the side sheet 32, so the air tube 33 is protected from heat during welding, etc.

[0035] The sheet material 3 and the air tubes 33 ensure airtightness inside the scaffolding device 2, making it less susceptible to the effects of wind and rain and improving workability. In addition, temperature and humidity can be easily controlled. The sheet material 3 has a window that can be opened and closed with a zipper and can be easily attached and removed, so when a typhoon or other strong wind is expected, the impact can be minimized by opening the window or removing the sheet material 3.

[0036] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and each of the above-described components can be appropriately modified within the scope of the present invention. In the above embodiment, the scaffolding device 2 of this embodiment is described as being used when joining the column 11 and beam 12 of the floating foundation 1, but the structure on which the scaffolding device 2 is installed is not limited.

[0037] In the above embodiment, the case where the roof frame 6 is formed on the frame structure 51 after the scaffolding unit 5 is installed on the structure (beam joint 13) has been described, but the roof frame 6 may also be formed integrally with the frame structure 51 in advance. Furthermore, the material from which the roof frame 6 is made is not limited, and may be, for example, steel.

[0038] The work procedure of the scaffolding construction method is not limited to the order shown in the above embodiment and may be changed as appropriate. For example, in the scaffolding installation work, the scaffolding unit 5 on which the sheet material 3 is previously installed may be installed. [Explanation of symbols]

[0039] 1 Floating foundation 11 columns 12 Beam 13 Beam joint 14 horizontal beam 15 Oblique beam 2 Scaffolding equipment 3 Sheet material 31 Roofing Sheet 32 Side sheet 4 Receiving member 5 Scaffolding Units 51 Frame Structure 52 Scaffolding materials 53 Locking member 54 Stopper 6 Roof frame

Claims

1. A plurality of receiving members fixed to the structure; A scaffolding device comprising: a scaffolding unit attached to the structure via the support member, The scaffolding unit comprises: Scaffolding members; A frame structure supporting the scaffolding members; a plurality of locking members fixed to an upper portion of the frame structure; A scaffolding device, characterized in that the locking member is capable of being locked to the receiving member.

2. 2. The scaffolding device according to claim 1, wherein the frame structure is provided with a stopper that grips the receiving member together with the locking member locked to the receiving member.

3. A pair of scaffolding units are opposed to each other across the structure, 2. The scaffolding device according to claim 1, wherein the scaffolding units are connected to each other at their lower parts.

4. a roof frame formed on the frame structure; A roof sheet covering the upper surface of the pair of scaffolding units via the roof frame; The scaffolding device according to claim 3, further comprising side sheets covering the outer peripheral surfaces of the pair of scaffolding units.

5. The structure is a steel pipe, 5. The scaffolding device according to claim 4, wherein the side sheets have slits formed therein through which the steel pipes can pass.

6. The aircraft further includes an air tube surrounding the steel pipe. The scaffolding device according to claim 5, wherein a portion of the air tube is wrapped around the side sheet.

7. A scaffolding construction method for constructing a scaffold using the scaffolding device according to any one of claims 1 to 6, a scaffolding installation work in which a pair of the scaffolding units are installed so as to face each other across a structure; A scaffolding construction method, characterized by carrying out frame connection work to connect the scaffolding units to each other at the bottom of the frame structure.

8. The scaffolding construction method described in claim 7, characterized in that during the scaffolding installation work, the locking member is locked to the receiving member, and a stopper provided below the locking member is abutted against the underside of the receiving member, thereby gripping the receiving member with the locking member and the stopper.

9. the structure is made of steel pipes; A roof sheet installation work of covering the top of the pair of scaffolding units with a roof sheet; A side sheet installation work is performed to cover the outer surfaces of the pair of scaffolding units with side sheets, 8. The scaffolding construction method according to claim 7, wherein in the side sheet installation work, the structure is inserted through a slit formed in the side sheet.

10. 10. The scaffolding construction method according to claim 9, wherein a roof frame forming operation is carried out to form a roof frame on the frame structure before the roof sheet installation operation.

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