JP3405429B2 - Scaffolding equipment for roof construction - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof construction scaffold used for constructing a roof structure when assembling a structure, which stands on a bottom floor to support the roof structure during assembly of the structure. The present invention relates to the one using the provisional support columns. In particular, the present invention relates to a scaffolding device for roof construction on which a worker rests at the time of assembling, welding and painting work on a dome-shaped roof structure such as a water tank as a large tank.

[0002]

2. Description of the Related Art Conventionally, as this type of technology, for example,
Roof construction scaffolds 7, 8 as shown in FIG. 10 or FIG.
A and 8B are known. First of all, this scaffolding for roof construction 7,
Explaining a water tank which is a structure using 8A and 8B, as shown in FIG. 8, a general water tank 1 has a circular bottom floor 2 and a cylindrical side wall standing upright around the floor 2. It is composed of a side plate 3 and a dome-shaped roof structure 4 forming the top of the tank.

When assembling a large water tank 1, as shown in FIG. 9, the center of gravity of the roof structure 4 is supported by main temporary columns 5 standing on the bottom floor 2, and the roof structure 4 is also supported. It was also necessary to support the intermediate portion deviated from the center of gravity of the above with the plurality of sub temporary columns 6 standing on the bottom floor 2.

Although some of the plurality of sub temporary columns 6 are omitted in the drawing, an appropriate number such as 6 or 8 is arranged at predetermined intervals in the circumferential direction with the main temporary column 5 as the center. It is only standing. The number of the main temporary columns 5 and the intervals between them are appropriately determined after calculating the load of the incomplete roof structure 4 and the like.
When the roof structure 4 was completed, the temporary columns 5 and 6 were removed.

A temporary beam (not shown), for example, is arranged between the side plate 3 and each of the temporary columns 5 and 6, and the rear side of the roof structure 4, that is, the indoor side, is constructed thereon as shown in FIG. A narrow-width scaffold 7 for roof construction on which workers were mounted was attached. Although only one scaffold 7 for roof construction appears to be erected in FIG. 10, in reality, the main temporary support columns 5 are provided so as to cover the work range over the entire rear side of the roof structure 4. Plural pieces are arranged so as to extend radially such as 6 pieces or 8 pieces in the diameter direction around the center.

Further, as an example of a roof construction scaffold which is not directly assembled between the temporary columns 5 and 6, there is also a type shown in FIG. This roof construction scaffolding 8A, 8B
Are configured in a tower shape by virtue or a single pipe independently of each of the temporary columns 5 and 6, and those arranged closer to the center side of the bottom floor 2 are set higher to reach the back side of the roof structure 4. .
Naturally, the scaffolds 8A and 8B for roof construction are provided with the temporary columns 5 and 5,
It was designed to fit in the gap space so as not to interfere with 6 or the side plate 3.

When the construction including the above-mentioned assembling, welding and painting work of the roof structure 4 is completed, the scaffolds 7 and 8 for roof construction are provided.
Dismantling A and 8B, and subsequently each temporary stanchions 5 and 6 that became unnecessary
After removing also, this time, other construction such as the side plate 3 is performed. When assembling the side plate 3 and performing welding and painting work, scaffolds for work as shown in FIGS. 12 and 13 have been used. The scaffold 9 shown in FIG. 12 is almost the same as the scaffold 8B for roof construction, and the scaffold 9A shown in FIG. 13 is provided with casters for movement at the bottom thereof.

[0008]

However, in the prior art as described above, first, the one shown in FIG.
A plurality of roof construction scaffolds 7, which are relatively large materials, must be constructed one by one between the side plates 3 and the temporary columns 5 and 6 to construct scaffolds, and further dismantling of the roof structure 4 after completion of construction. The work is very troublesome because there are many materials and assembling points, and it takes days to assemble and disassemble the scaffolding itself, which makes it difficult to reduce costs. Further, with only a plurality of roof construction scaffolds radially arranged around the main temporary support columns 5, there may be a considerable gap between the scaffolds, and the work range is limited as the number of scaffolds 7 decreases. There was also a problem.

In addition, in the structure shown in FIG. 11, the structure of the roof construction scaffolds 8A and 8B itself is further complicated, and the number of days required for assembling and disassembling the scaffolding becomes long, which also causes a cost increase. Was becoming. Moreover,
Such scaffolds 8A and 8B cover the bottom floor 2 in a wide range, hindering other constructions including assembling the bottom floor 2 and the side plates 3, painting or inspection, and assembling the water tank 1. Could not be done efficiently and quickly. In addition, in the conventional technology, basically, scaffolds for roof construction 7,8A, 8
B and the scaffolds 9 and 9A for side plate construction are separately configured, and the number of materials is increased accordingly.

The present invention has been made by paying attention to the problems of the prior art as described above. By reducing the number of materials and simplifying the structure, the assembling and disassembling operations can be performed easily and quickly. The construction period can be shortened, the cost can be significantly reduced, and a wide working range that covers the entire roof structure can be reliably secured, and there is no hindrance to other construction. It is intended to provide a scaffolding device for roof construction.

[0011]

The gist of the present invention for achieving the above-mentioned object lies in the following respective items. According to the first aspect of the invention, when the structure (1) is assembled, the main temporary columns (5) supporting the center of gravity of the roof structure (4) are erected on the bottom floor (2), The roof structure (4) is arranged in the circumferential direction with the pillar (5) as the center.
A plurality of sub-temporary columns (6) for supporting a part deviated from the center of gravity of the roof are erected on the bottom floor (2) at predetermined intervals, and the roof structure (4) supported by the temporary columns (5, 6). In the scaffolding device for roof construction used for constructing the above), a central rail (10) that circulates along the outer circumference of the main temporary support column (5) is provided on the upper part of the main temporary support column (5), while each of the sub temporary support columns (6) is Similarly, an annular rail (11) that circulates in the circumferential direction between them is erected on the upper part, and an annular rail (1) is provided between the center rail (10) and the annular rail (11).
The scaffold (20) extending integrally in the radial direction of 1) is installed substantially horizontally, and the main temporary support column is supported in a state where the scaffold (20) is supported only by the center rail (10) and the annular rail (11). The scaffolding device for roof construction is characterized in that the scaffolding device for roof construction is arranged so as to be able to swivel in the circumferential direction around the rotation center (5).

According to the second aspect of the present invention, when the structure (1) is assembled, the main temporary support columns (5) supporting the center of gravity of the roof structure (4) are erected on the bottom floor (2), A plurality of sub-temporary columns (6) supporting a portion deviated from the center of gravity of the roof structure (4) in the circumferential direction with the main temporary column (5) substantially at the center are arranged at predetermined intervals at the bottom floor (2). In the roof construction scaffolding device used to construct the side wall (3) in addition to the roof structure (4) which is erected on the upper side and is supported by the temporary columns (5, 6), the main temporary column (5) ) Is provided with a center rail (10) that circulates along the outer periphery thereof,
The center rail (1) of the upper part of each of the sub temporary columns (6)
0), the inner ring-shaped rail (11) which circulates in the circumferential direction is erected between them, and each sub temporary support column (6) is arranged outside the inner ring-shaped rail (11). An outer annular rail (12) that is concentric with each other, and a first roof scaffold (in the radial direction of the inner annular rail (11) that integrally extends between the center rail (10) and the inner annular rail (11). Two
0) is installed substantially horizontally, and the main temporary support column (5) is rotated about the center while the first roof scaffold (20) is supported only by the central rail (10) and the inner annular rail (11). And a second portion integrally arranged on the outer annular rail (12) radially outward of the outer annular rail (12).
One end of the roof scaffold (30) is connected to the main temporary support column (5) so as to be capable of turning in the circumferential direction about the rotation center, and the periphery of the roof structure (4) of the second roof scaffold (30). At the other end extending to the vicinity, it hangs down to the bottom floor (2) along the side wall (3) of the structure (1), and is movably grounded on the bottom floor (2) as the one end turns. Accordingly, the scaffolding device for roof construction is characterized in that the scaffolding (40) for side walls that supports the second scaffolding (30) for the second roof together with the outer annular rail (12) is fixedly provided.

According to the third aspect of the present invention, when the structure (1) is assembled, a plurality of temporary columns (6) are arranged at predetermined intervals in the circumferential direction around the center of gravity of the roof structure (4). In the roof construction scaffolding device used to construct the side wall (3) in addition to the roof structure (4) erected on the bottom floor (2) and supported by each temporary strut (6), each of the temporary strut On the outer side of the upper part of (6), an annular rail (12) that circulates in the circumferential direction between them is erected, and on the annular rail (12),
One end of the roof scaffold (30) extending outward in the radial direction is connected to the roof scaffold (30) so that the roof scaffold (30) can rotate in the circumferential direction around the center of gravity of the roof structure (4) as a rotation center, and the roof scaffold (30).
At the other end of the roof structure (4) extending to the periphery, it hangs down to the bottom floor (2) along the side wall (3) of the structure (1) and moves onto the bottom floor as the one end turns. By grounding as much as possible, the roof scaffold (30) can be connected to the annular rail (1).
2) A scaffolding device for roof construction, characterized in that a side wall scaffolding (40) for supporting together with 2) is fixedly provided.

Next, the operation based on the solving means will be described. According to the scaffolding device for roof construction according to claim 1, the temporary pillars standing to support the roof structure (4) are used as they are as a part of the structure, and the main rails (5) are provided with the center rail (10). On the other hand, an annular rail (11) may be installed between the sub temporary columns (6). Then, the scaffold (20) is installed between the center rail (10) and the annular rail (11) to assemble the present apparatus. In this way, the structure is simplified, and the assembling and disassembling operations can be performed easily and quickly.

The scaffold (20) of the present device can be pivotally moved along the center rail (10) and the annular rail (11) in the circumferential direction with the main temporary support column (5) as the center of rotation. Therefore, by sequentially turning and moving the scaffold (20) according to the process, the roof structure (4)
It is possible to cover a wide range of as a working area without any gap. As a result, unlike the conventional scaffolding (7) using temporary columns, it is not necessary to radially arrange many scaffolds (7), and the number of members can be reduced accordingly.

In addition, the central rail (10), the annular rail (11) and the scaffold (20) are all temporary columns (5, 5).
Since it is arranged on the upper part of 6), the scaffolding (8A, 8B), like the scaffolding (8A, 8B) independent of the conventional temporary support, provides a work space necessary for other construction on the bottom floor (2). There is no major erosion. Therefore, other construction can be started in parallel with the construction of the roof structure (4), and the entire structure (1) can be efficiently and promptly assembled.

According to the scaffolding device for roof construction according to claim 2, in addition to the scaffolding device for roof construction according to claim 1, an outer annular rail (1) erected outside the inner annular rail (11).
In (2), one end of the second roof scaffold (30) is rotatably mounted, and the other end of the second roof scaffold (30) hangs down along the side wall (3) to form the one end. Scaffold (40) for side walls that movably touches the bottom floor (2) with the turning movement of the
Since the scaffold is fixed, the roof scaffold (30) and the side wall scaffold (4)
0) and are unified as one. Therefore, it is possible to reduce the number of parts without separately configuring each scaffold as in the conventional technique. The same applies to the scaffolding device for roof construction according to claim 3.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. 1 to 7 show an embodiment of the present invention. As shown in FIGS. 1 and 2, when assembling a tank-type water storage tank 1 as a structure, the scaffolding device for roof construction assembles a dome-shaped roof structure 4 and a cylindrical side wall 3, welds and This is a device for workers to put on during the painting work.

The tank type water storage tank 1 has been described above, and thus the duplicated description will be omitted. However, in this embodiment, six sub temporary columns 6 are erected in a circumferential direction with the main temporary column 5 being substantially at the center. There is. The distance from the main temporary support column 5 to each sub temporary support column 6 is usually about 6 to 8 m. A jack 7 is provided at the upper ends of the main temporary columns 5 and the sub temporary columns 6 so as to be pressed against the back side of the roof structure 4.

The scaffolding device for roof construction according to this embodiment is
Center rail 10, inner ring rail 11 and outer ring rail 1
2, a first roof scaffold 20, a second roof scaffold 30, and a side wall scaffold 40 integrated therewith. However, the scaffolding device for roof construction according to the present invention includes, in addition to all of the above-described components, a structure including a center rail 10, an inner ring-shaped rail 11, and a first roof scaffolding 20, or an outer ring-shaped rail 12. Alternatively, the second roof scaffold 30 and the side wall scaffold 40 may be configured.

The center rail 10 is provided so as to circulate along the outer periphery of the main temporary support column 5 via a receiving beam 13 fixedly provided on the upper part of the main temporary support column 5. The inner ring-shaped rail 11 is erected so as to circulate in the circumferential direction on the side facing the center rail 10 via a receiving beam 14 fixedly provided on the upper portion of each sub temporary column 6. Further, the outer annular rail 12 is erected on each of the receiving beams 14 so as to be concentric with the inner annular rail 11 on the outer side of each of the sub temporary columns 6.

The first roof scaffold 20 comprises the central rail 1
It is erected so as to be rotatable in the circumferential direction with the main temporary support column 5 as the center of rotation in such a state that it extends integrally in the radial direction of the inner annular rail 11 between 0 and the inner annular rail 11. Here, the first roof scaffold 20 is arranged so as to be supported only by the center rail 10 and the inner annular rail 11. In the present embodiment, the two first scaffolds 20 for roofing are erected so as to be independently turnable. The number of such first roof scaffolds 20 to be installed may be appropriately determined in consideration of the construction range, the target construction period, the number of workers, and the like.

As shown in FIGS. 3 and 4, each of the first roof scaffolds 20 has a pair of shape steels 2 which are erected in a substantially horizontal state.
The handrail 22 is attached to the parts 1 and 21. The handrail 22 is composed of a frame member 22a, a horizontal member 23, and a vertical member 24.
1, 21 are connected by a work floor 25. Such a first roof scaffold 20 is unitized as a block to facilitate loading and unloading, and the coupling between the members is fixed by bolts instead of welding for the sake of assembly and disassembly. Is used.

Of course, the specific structure of the first roof scaffold 20 is not limited to those shown in FIGS. 3 and 4, and may be, for example, the structure shown in FIG. The modified example of the first roof scaffold shown in FIG. 5 has a truss structure in which the linear rods 26 are assembled to the frame member 22a so that the triangles are arranged side by side, and the shape steel 21 is omitted. In this case, the strength is sufficient when the span between the center rail 10 and the inner annular rail 11 is relatively short, and the weight can be reduced.

[0025]

As shown in FIG. 6, wheels 28 fitted to the center rail 10 or the inner ring-shaped rail 11 are provided at the lower portions of both ends of the first roof scaffold 20 (only one end side is shown in the figure).
Are mounted via bearings 27. Due to the rotation of the wheels 28, the first roof scaffold 20 smoothly moves between the center rail 10 and the inner annular rail 11, and the main temporary support columns 5
It is possible to make a turning movement around the center of rotation.

The turning movement of the first roof scaffold 20 may be performed manually, or a driving means may be separately provided to be electrically adjustable. Although not shown, the wheel 28 is provided with a lock mechanism for fixing the first roof scaffold 20 so as not to move at a predetermined position.

As shown in FIGS. 1 and 2, the second roof scaffold 30 is circumferentially centered on the main temporary column 5 in a state of integrally extending to the outer side of the outer annular rail 12 in the radial direction. It is arranged so that it can turn. The structure of the second roof scaffold 30 is as shown in FIG.
Although not shown in the figure, a wheel (see FIG. 6) which is fitted to the outer annular rail 12 so as to be rollable is attached to the lower side of the one end 31 of the wheel 31.

On the other hand, at the other end 32 of the second roof scaffolding 30 extending to the vicinity of the periphery of the roof structure 4, the other end 32 hangs down along the side plate (side wall) 3 to the bottom floor 2 and is accompanied by the turning movement of the one end. A side wall scaffold 40 that is movably grounded is integrally fixed on the bottom floor 2. The side wall scaffolding 40 is formed by assembling the skeletal material that forms the above-mentioned roof scaffolding 20 and 30 into a column shape extending in the vertical direction. The upper end 4 of the side wall scaffold 40
1 is fixed to the lower side of the other end 32 of the second roof scaffold 30 by a joint or the like that is fixed by bolts so that it can be easily assembled and disassembled. Second roof scaffolding 30
Is supported by the outer annular rail 12 and the sidewall scaffold 40 in a substantially horizontal state.

At the lower end 42 of the sidewall scaffold 40, the bottom floor 2
A roller 43 that is rotatably grounded is mounted on the top. Further, ladder members 44 arranged in the vertical direction may be provided outside the sidewall scaffold 40. The unit in which the second roof scaffolding 30 and the side wall scaffolding 40 as described above are integrated into two units.
The stands are installed so that they can rotate independently of each other. The number of such units to be installed may be appropriately determined in consideration of the construction range, the target construction period, the number of workers, and the like. The turning movement of this unit may be manually or electrically driven, and the roller 43 is provided with a lock mechanism (not shown).

Next, the operation will be described. The number of first scaffolds 20 for roofs, second scaffolds 30 for roofs, and scaffolds 40 for side walls 40 to be installed is determined in consideration of the work range, the process, and the like in the roof structure 4 and the side plates 3 of the water tank 1. Then, as shown in FIGS. 1 and 2, the center rail 10 and the inner annular rail 1
1, the outer ring rail 12, the first roof scaffolding 20, the second roof scaffolding 30 and the side wall scaffolding 40 integrated therewith,
Before assembling the roof structure 4, a crane or the like is used in advance to dispose the roof structure 4 on the main temporary columns 5 and the sub temporary columns 6.

The present apparatus uses the main temporary columns 5 and the sub temporary columns 6 that have been erected in advance to support the roof structure 4 as they are as a part of the configuration, and the scaffolds 20, 30, 4 are also used.
0s are individually unitized as blocks, so loading and unloading are extremely easy. Furthermore, each scaffold 20,3
Since the joints that are fixed by bolts are used for the connection between the skeletons that make up 0 and 40, disassembly after assembly and construction can be performed quickly.

The first roof scaffold 20 of the assembled device
Can be pivotally moved along the center rail 10 and the inner ring-shaped rail 11 in the circumferential direction around the main temporary support column 5. Therefore, by rotating the two first roof scaffolds 20 separately in sequence in accordance with the construction process, a wide range from the center of gravity of the roof structure 4 to the intermediate portion where the upper ends of the sub temporary columns 6 are engaged. Therefore, the work area can be efficiently covered without a gap. As a result, unlike the conventional technique shown in FIG. 10, it is not necessary to radially dispose many scaffolds 7, and the number of members can be reduced accordingly.

Similarly, the second roof scaffolding 30 can also be pivotally moved along the outer annular rail 12 in the circumferential direction,
By the pivotal movement of the second roof scaffold 30, the hem portion from the intermediate portion of the roof structure 4 to the peripheral edge can be covered as a work area without a gap. Moreover, the second
Along with the turning movement of the roof scaffolding 30, the side wall scaffolding 40 fixed to the other end 32 supports the second roofing scaffolding 30 in a substantially horizontal state, and turns along the inner wall of the side plate 3. Therefore, the construction of the side plate 3 can be efficiently performed synchronously. Further, since the roof scaffold 30 and the side wall scaffold 40 are integrated as a unit, it is possible to save the labor of separately preparing and installing each scaffold as in the conventional technique shown in FIG.

Moreover, since the central rail 10, the annular rail 11 and the scaffolds 20 and 30 forming the present apparatus are all arranged above the temporary columns 5 and 6, they are independent of the conventional temporary columns. Unlike the scaffolds 8A and 8B, the scaffolds 8A and 8B do not significantly erode the work space required for other construction on the bottom floor 2. Therefore, in parallel with the construction of the roof structure 4, other constructions such as welding and painting of the bottom floor 2 and the side plates 3 can be undertaken, and the entire water tank 1 can be assembled efficiently and promptly. Becomes

In the above embodiment, the center rail 10, the inner ring-shaped rail 11, the outer ring-shaped rail 12, the first roof scaffold 20, the second roof scaffold 30 and the side wall scaffolding 40 integrated therewith are provided. All of them are provided, but may be composed only of the center rail 10, the inner annular rail 11, and the first roof scaffold 20, or the outer annular rail 12, the second roof scaffold 30, and the side wall scaffold 40. You may comprise only. Further, each of these components is not limited to the illustrated embodiment.

[0037]

According to the scaffolding device for roof construction according to the present invention, the temporary strut of the roof structure is used as it is as a part of the structure,
The number of materials can be reduced and the configuration can be simplified.
The time required for assembling and disassembling work is also shortened, and the cost can be reduced. Also, since the scaffold can be freely moved in the circumferential direction on the rails provided on the temporary columns, it is possible to ensure a wide working range that covers the entire roof structure without increasing the number of scaffolds. Can be secured. Furthermore, since the rails and scaffolds are placed above the temporary columns, the work space required for other construction such as the bottom floor will not be significantly eroded or hindered, and the assembly of the entire structure can be done quickly and efficiently. It becomes possible to do it.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a scaffolding device for roof construction according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a scaffolding device for roof construction according to an embodiment of the present invention.

FIG. 3 is a front view showing a first roof scaffold that constitutes a roof construction scaffolding device according to an embodiment of the present invention.

FIG. 4 is a side view showing a first roof scaffold that constitutes a scaffolding device for roof construction according to an embodiment of the present invention.

FIG. 5 is a front view showing a modified example of the first roof scaffold.

FIG. 6 is an enlarged view showing a main part of a scaffolding device for roof construction according to an embodiment of the present invention.

FIG. 7 is a front view showing a second roof scaffold and side wall scaffolds that constitute a roof construction scaffolding device according to an embodiment of the present invention.

FIG. 8 is a front view showing a water tank.

FIG. 9 is a vertical sectional view showing a water tank.

FIG. 10 is an explanatory view showing a conventional scaffold for roof construction installed in a water tank.

FIG. 11 is an explanatory view showing another conventional scaffold for roof construction installed in a water tank.

FIG. 12 is an explanatory diagram showing a conventional scaffold for side plate construction installed in a water tank.

FIG. 13 is an explanatory view showing another conventional scaffold for side plate construction installed in a water tank.

[Explanation of symbols]

1 ... Water tank (structure) 3 ... Side plate (side wall) 4 ... Roof structure 10 ... Central rail 11 ... Inner ring rail 12 ... Outer ring rail 20 ... First roof scaffold 30 ... Second roof scaffold 40 ... Side wall scaffolding

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hana Mure Masahiro               5-13-17 Shimosueyoshi, Tsurumi-ku, Yokohama-shi, Kanagawa (72) Inventor Satoshi Nakai               2-3-3, Wakayamadai, Shimamoto-cho, Mishima-gun, Osaka Prefecture               205 (72) Inventor Motonobu Shirokawa               1-15 Ota, Takaoka City, Toyama Prefecture                (56) Reference JP-A-6-240857 (JP, A)                 Actual Kaihei 4-100493 (JP, U)

Claims (3)

(57) [Claims] 1. When assembling a structure, main temporary columns supporting the center of gravity of the roof structure are erected on the bottom floor, and the center of gravity of the roof structure is circumferentially centered on the main temporary columns. In a scaffolding device for roof construction, which is used to construct a roof structure supported by each of the temporary columns, a plurality of sub-temporary columns that support more distant parts are erected on the bottom floor at predetermined intervals, and the main temporary column is used. A center rail that circulates along the outer periphery of the pillar is provided on the upper part of the pillar, while an annular rail that circulates in the circumferential direction is erected between the center rail and the upper part of each of the sub temporary pillars. A scaffold that extends integrally in the radial direction of the annular rail is installed substantially horizontally between the annular rails, and the scaffold is supported only by the center rail and the annular rail, and a circle with the main provisional column as the center of rotation. Turn around Rotatably the roof construction scaffolding apparatus being characterized in that disposed. 2. When assembling a structure, main temporary columns supporting the center of gravity of the roof structure are erected on the bottom floor, and the center of gravity of the roof structure is circumferentially centered on the main temporary columns. In a scaffolding device for roof construction used for constructing a side wall, in addition to a roof structure supported by each of the temporary columns, a plurality of sub-temporary columns that support more distant parts are erected on the bottom floor at predetermined intervals. While providing a center rail that circulates along the outer periphery of the main provisional post on the upper side, on the side facing the center rail of the same upper part of each of the sub-provisional posts, circulate in the circumferential direction between them. An inner annular rail is erected, and an outer annular rail that is a concentric circle is erected on the outer side of the inner annular rail with each sub-temporary strut interposed therebetween. A radial direction of the inner annular rail is provided between the center rail and the inner annular rail. First roof extending integrally with the The scaffold is installed substantially horizontally, and the first roof scaffold is disposed so as to be capable of turning in the circumferential direction around the main temporary support column while being supported only by the center rail and the inner annular rail. , One end of a second roof scaffold integrally extending to the outer side in the radial direction of the outer annular rail is rotatably movable in a circumferential direction around the main provisional pillar, and
At the other end of the roof scaffold extending near the periphery of the roof structure, it hangs down to the bottom floor along the side wall of the structure, and is grounded movably on the bottom floor along with the turning movement of the one end. (2) A scaffolding device for roof construction, characterized in that a scaffolding for side walls that supports the scaffolding for roof together with the outer annular rail is fixedly provided. 3. When assembling a structure, a plurality of temporary columns are erected on the bottom floor at predetermined intervals in a circumferential direction centered on the center of gravity of the roof structure, and the roof is supported by each temporary column. In addition to the structure, in a scaffolding device for roof construction used to construct a side wall, on the upper outer side of each of the temporary columns, an annular rail that circulates in the circumferential direction across them is erected, and on the annular rail, One end of the roof scaffold integrally extending to the outside in the radial direction is rotatably connected in a circumferential direction around the center of gravity of the roof structure as a rotation center and extends to the vicinity of the periphery of the roof scaffold structure. For the side wall that supports the roof scaffolding together with the annular rail by hanging to the bottom floor along the side wall of the structure at the other end and movably grounding on the bottom floor with the turning movement of the one end. Characterized by a fixed scaffold Root for construction scaffolding equipment.