Framework scaffolding structure and construction method for framework scaffolding structure

Abstract

To provide a framework scaffolding structure for constructing high-rise scaffolding, and a construction method for the framework scaffolding structure.SOLUTION: A framework scaffolding structure 20 installed on the outside of a high-rise building 10 has an upper portion 21, a lower portion 22, and a switching portion 25. The upper portion 21 is composed of a plurality of pieces of first framework scaffolding 30 having a first building frame 31 of a first width L1. The lower portion 22 has a second building frame 41 of a second width L2 narrower than the first width L1, and is composed of a plurality of pieces of second framework scaffolding 40 arranged below the first framework scaffolding 30. The switching portion 25 distributes and supports a load of a pedestal 31a of the first building frame 31 to pedestals 41a of the plurality of second building frames 41.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a frame scaffolding structure provided on the outside of a structure such as a high-rise building, and a construction method for the frame scaffolding structure. [Background technology]

[0002] Conventionally, in the demolition of a high-rise building in which building materials containing harmful substances such as asbestos are used for the exterior walls, etc., work such as removing the building materials is required. In this case, a technique has been considered in which a horizontal member extending from the building to the outside is provided in the middle of the building, and then a frame scaffold is assembled on the horizontal member (see, for example, Patent Document 1). The technique described in this document describes a temporary pier that includes a main girder, which is a horizontal member, a covering plate laid on the top surface of the main girder, a ground covering material laid on the top surface of the main girder along the end of the covering plate, and a temporary scaffolding unit attached to the ground covering material and extending to the side of the main girder. The temporary scaffolding unit has a plurality of brackets that can slide along the longitudinal direction of the ground covering material, scaffolding plates laid on the plurality of brackets, and handrails hung horizontally on the tips of the plurality of brackets. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-50397 A Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, a temporary scaffolding unit that secures an aisle is constructed by using horizontal members. However, depending on the structure of the building, it may be difficult to provide horizontal members on the building at the floor where the scaffolding is to be installed. In this case, it is necessary to assemble the frame scaffolding from the ground. However, considering the load of the scaffolding, there is a limit to the height of the frame scaffolding that can be assembled. For this reason, it was sometimes impossible to install the frame scaffolding to the desired height. [Means for solving the problem]

[0005] The wall frame scaffolding structure that solves the above-mentioned problems is a frame scaffolding structure that is provided on the outside of a building and is composed of a plurality of frame scaffoldings connected together, and comprises a plurality of first frame scaffoldings having a first building frame of a first width, a plurality of second frame scaffoldings having a second building frame of a second width narrower than the first width and positioned below the first frame scaffoldings, and a switching unit that distributes and supports the load of the piers of the first building frame of the first frame scaffolding to the piers of the multiple second building frames of the second frame scaffolding.

[0006] A construction method for a wall frame scaffolding structure that solves the above-mentioned problems is a construction method for a frame scaffolding structure that is provided on the outside of a building and is formed by connecting a plurality of frame scaffoldings, the frame scaffolding structure comprises a plurality of first frame scaffoldings having a first building frame of a first width, a plurality of second frame scaffoldings having a second building frame of a second width narrower than the first width and arranged below the first frame scaffoldings, and a switching unit that distributes and supports the load of the pedestal of the first building frame of the first frame scaffolding to the pedestal of the plurality of second building frames of the second frame scaffolding, the switching unit comprising a first gripping member connected to the bottom of the pedestal of the first building frame and having a receiving portion that is open downward, and a second gripping member connected to the top of the pedestal of the second building frame. the second gripping member having a receiving portion that is open at the top, first and second transmission members which are long objects that are inserted into the first and second gripping members, respectively, and a transmission plate that abuts the first transmission member and the second transmission member and is positioned at a position corresponding to the load transmitted from the first transmission member; after assembling the multiple second frame scaffoldings, the second gripping member is connected to the top of the pedestal of the second frame scaffolding, the second transmission member is placed within the second gripping member, the first transmission member is placed on top of the second transmission member via the transmission plate, the first gripping member that grips the first transmission member is placed, and the pedestal of the first building frame is connected to the first gripping member. Effect of the Invention

[0007] According to the present invention, high-rise scaffolding can be constructed. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a front view illustrating the entire framework scaffolding structure arranged around a building in an embodiment. [Diagram 2] A front view illustrating the switching portion of the framework scaffolding structure in the embodiment. [Diagram 3] An explanatory diagram illustrating the main parts of the switching section of the framework scaffolding structure in the embodiment. [Figure 4] 4A and 4B are cross-sectional views of a main part of a framework scaffolding structure in an embodiment, where (a) is a cross-sectional view taken along line 4a-4a in FIG. 3, and (b) is a cross-sectional view taken along line 4b-4b in FIG. [Diagram 5] 1 is a flow chart illustrating the steps of a construction method for a framework scaffolding structure in an embodiment. [Figure 6] FIG. 2 is an explanatory diagram illustrating a construction method of a framework scaffolding structure in an embodiment. [Figure 7] FIG. 2 is an explanatory diagram illustrating a construction method of a framework scaffolding structure in an embodiment. [Figure 8] FIG. 2 is an explanatory diagram illustrating a construction method of a framework scaffolding structure in an embodiment. [Figure 9] FIG. 2 is an explanatory diagram illustrating a construction method of a framework scaffolding structure in an embodiment. [Figure 10] FIG. 2 is an explanatory diagram illustrating a construction method of a framework scaffolding structure in an embodiment. [Figure 11] FIG. 2 is an explanatory diagram illustrating a construction method of a framework scaffolding structure in an embodiment. [Figure 12] FIG. 2 is an enlarged view of a main part in a construction method for a framework scaffolding structure according to an embodiment. [Figure 13] FIG. 2 is an explanatory diagram illustrating a construction method of a framework scaffolding structure in an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment that embodies a framework scaffolding structure and a construction method for the framework scaffolding structure will be described with reference to Figs. 1 to 13. In this embodiment, a framework scaffolding structure that surrounds a high-rise building as a building will be described. This framework scaffolding structure is erected on the ground by assembling the framework scaffolding from the ground, which is the installation surface.

[0010] As shown in Fig. 1, in this embodiment, a framework scaffolding structure 20 is provided on the periphery of a high-rise building 10 so as to surround the high-rise building 10. The framework scaffolding structure 20 has an upper portion 21 composed of a plurality of first framework scaffoldings 30, a lower portion 22 composed of a plurality of second framework scaffoldings, and a switching portion 25 provided between them.

[0011] The first frame scaffolding 30 is, for example, a frame scaffolding using a first building frame 31 having a first width L1 (length in the horizontal direction X). This first width L1 is the maximum installation interval (1829 mm) used in principle when assembling a frame scaffolding.

[0012] The second framework 40 is constructed using a second framework 41 having a second width L2 narrower than the first framework 31. The second width L2 of the second framework 41 is, for example, half the length (=914 mm) of the framework of the first framework 30. In this embodiment, the pedestals 41a of the second framework 41 of the second framework 40 are arranged directly below the pedestals 31a of the first framework 31 of the first framework 30. Furthermore, the pedestals 41a of the second framework 41 of the second framework 40 are arranged between the adjacent pedestals 31a of the first framework 31 of the first framework 30.

[0013] (Structure of switching portion 25) Next, the configuration of the switching unit 25 will be described with reference to Fig. 2 to Fig. 4. Fig. 2 is a front view of the switching unit 25, and Fig. 3 is an enlarged view of the main part of the switching unit 25 in Fig. 2. Fig. 4 is a cross-sectional view of the main part of the switching unit 25, and Fig. 4(a) and Fig. 4(b) are cross-sectional views taken along lines 4a-4a and 4b-4b in Fig. 3, respectively.

[0014] As shown in Fig. 2, the switching section 25 is configured by alternately arranging a third story portion and a second story portion. In the third story portion, the load of the pedestals 31a of the first building frame 31 on the top story is distributed to the central story, and this central story is then distributed again to the bottom story. In the second story portion, the load of the pedestals 31a on the upper story is distributed to the lower story. Then, in the bottom story of the third story portion and the lower story of the second story portion, the distributed load is supported by the pedestals 41a of the second building frame 41.

[0015] Specifically, a gripping member 51 is connected to the lower end of each pedestal 31a of the first building frame 31 of the first framework scaffolding 30 in the upper part 21. Also, a gripping member 52 is connected to the upper end of each pedestal 41a of the second building frame 41 of the second framework scaffolding 40 in the lower part 22. The gripping members 51, 52 have the same configuration but are arranged in opposite vertical directions, and correspond to the first gripping member and the second gripping member, respectively.

[0016] As shown in Fig. 4(a), the gripping member 51 has a receiving portion 51c that is open downward, and the gripping member 52 has a receiving portion 52c that is open upward. The gripping members 51 and 52 use the portion of the shaft of the support jack that is cut midway and has the receiving portions 51c and 52c.

[0017] The gripping member 51 (52) has a receiving portion 51c (52c), a shaft portion 51s (52s), and a base portion 51b (52b). The receiving portions 51c, 52c have a U-shaped cross section that opens upward or downward, and are equipped with a pair of side walls extending vertically and a connecting portion that connects them horizontally. The shaft portions 51s, 52s have a predetermined length corresponding to the arrangement of the legs 31a, 41a. The base portions 51b, 52b connect the shaft portions 51s, 52s of the gripping members 51, 52 to the legs 31a, 41a of the building frame (31, 41), respectively.

[0018] 2 and 3, the switching unit 25 has a configuration in which three gripping members 52 having shaft portions 52s of the same length and one gripping member 52 having a shaft portion 52s longer than the three gripping members 52 are arranged alternately. The switching unit 25 also has a configuration in which a gripping member 51 having a short shaft portion 51s with a height H1 and a gripping member 51 having a shaft portion 51s longer than the three gripping members 52 are arranged alternately.

[0019] Furthermore, the switching section 25 has rectangular steel pipes 55, 56, 57, 58, which are multiple long objects having a length L3 (=approximately 1 m), and multiple panels 60 as transmission plates arranged between the rectangular steel pipes 55-58. The rectangular steel pipes 55, 56 are the first transmission members inserted into the receiving portion 51c of the gripping member 51, and the rectangular steel pipes 57, 58 are the second transmission members inserted into the receiving portion 51c of the gripping member 51. The rectangular steel pipes 55, 57 respectively constitute the topmost and central stories of the three-story portion, the rectangular steel pipe 56 constitutes the upper story of the second story portion, and the rectangular steel pipe 58 constitutes the bottommost story of the three-story portion and the lower story of the second story portion.

[0020] Concrete panels used as formwork when pouring concrete are used as the panels 60. Furthermore, double-sided tape is attached to the upper and lower surfaces of each panel 60. This fixes the position of each panel 60 relative to the square steel pipes 55 to 58 arranged above or below.

[0021] 2, in the switching section 25, of the three gripping members 52 having shafts 52s of the same length, the two gripping members 52 (lower end gripping members) at both ends each support one end (outer end) of two square steel pipes 58 lined up in a row. The remaining central gripping member 52 (lower central gripping member) supports the other end (inner end) of these two square steel pipes 58 together.

[0022] Between the gripping members 52 (lower central gripping member) and 52 (lower end gripping member) (intermediate position), the end of the square steel pipe 56 is placed on the square steel pipe 58 via a panel 60. This panel 60 is positioned so as to abut against the upper surface of the center of the square steel pipe 58 (position 50 cm from both ends) and the lower surface of the end of the square steel pipe 56. Furthermore, the center of the square steel pipe 56 is inserted into the receiving portion 51c of the gripping member 51. Therefore, this gripping member 51 grips the center of the square steel pipe 56. The gripping member 51 is positioned directly above the gripping member 52 (lower central gripping member).

[0023] As shown in Fig. 3, one end (outer end) of two square steel pipes 57 lined up in a row is placed via a panel 60 above the gripping member 52 (lower end gripping member) supporting the other end of the square steel pipe 58. The other ends (inner end) of the two square steel pipes 57 are supported together by the gripping member 52 having a height H2. A square steel pipe 55 is placed on the square steel pipe 57 via the panel 60.

[0024] Furthermore, the panel 60 is arranged so as to abut against the upper surface of the center portion (50 cm from both ends) of the square steel pipe 57 and the lower surface of the end portion of the square steel pipe 55. The center portion of this square steel pipe 55 is inserted into the receiving portion 51c of the gripping member 51.

[0025] Furthermore, as shown in Fig. 4, crosspieces 61 are inserted between the pair of side walls of the receiving parts 51c, 52c of the gripping members 51, 52 and the square steel pipes 55-58 built therein. These crosspieces 61 are large enough to fill the gaps between the pair of side walls of the receiving parts 51c, 52c and the square steel pipes 55-58. By arranging two crosspieces 61 inside the pair of side walls of the receiving parts 51c, 52c, the square steel pipes 55-58 are fixed to the receiving parts 51c, 52c. Therefore, these crosspieces 61 function as a first fixing member and a second fixing member.

[0026] (Construction method of frame scaffolding structure 20) Next, a construction method for the framework scaffolding structure 20 having the above-mentioned configuration will be described with reference to Figs.

[0027] First, the second lower frame scaffolding is assembled and soundproof panels are installed (step S10). Specifically, the second frame scaffolding 40 is assembled from the ground with the second building frames 41 spaced 914 mm apart. In this case, the second frame scaffolding 40 is assembled by a conventional method.

[0028] Here, as shown in Figure 6, when assembly of the topmost second frame scaffolding 40 is completed, the lower end of the topmost second building frame 41 is fixed to the floor slab 11 of the high-rise building 10 by wall connectors 46 through openings such as windows of the high-rise building 10. Furthermore, each time the assembly of the second frame scaffolding 40 for each stage is completed, a soundproofing panel (not shown in this figure) is installed on the outside of the second frame scaffolding 40.

[0029] Next, the inner guide pipe and the life rope are installed (step S11). Specifically, as shown in Fig. 7, the lower part of the guide pipe 65 is attached to the high-rise building 10 side of the second frame scaffolding 40 using a clamp (not shown). In this case, the lower part of the guide pipe 65 is attached to the second building frame 41 of the uppermost second frame scaffolding 40, so that the upper part of the guide pipe 65 is attached at a position protruding from the second building frame 41. Furthermore, at this time, a life rope is installed on the guide pipe 65.

[0030] Next, the first stage of the upper scaffolding is provisionally assembled (step S12). Specifically, as shown in Fig. 8, in order to install the external net, the pedestals 31a of the first building frame 31 of the first frame scaffolding 30 are connected to the pedestals 41a of the second building frame 41 of the uppermost second frame scaffolding 40. In this case, only the building sites of the first frame scaffolding 30 are installed at intervals of 5400 mm.

[0031] Next, the outer net is installed (step S13). Specifically, a net is hung on the outside (the opposite side to the high-rise building 10) of this first building frame 31. In this case, the bottom of the net is inserted so as to be inside the second building frame 41 of the second frame scaffolding 40. Next, the outer pipe is installed and the outer net is replaced (step S14). Specifically, single pipes 66 are attached to the inside of the net, outside the high-rise building 10. Furthermore, the net that was hung on the first building frame 31 is replaced with the attached single pipes 66.

[0032] Next, the first stage of the temporarily assembled upper scaffolding is dismantled (step S15). Specifically, as shown in FIG. 9, the pedestals 31a of the first building frame 31 of the first framework scaffolding 30 are removed from the pedestals 41a of the second building frame 41 of the uppermost second framework scaffolding 40.

[0033] Next, the gripping members, square steel pipes, and panels are installed (step S16). Specifically, as shown in Fig. 2, a gripping member 52 is attached to the pedestal 41a of the second building frame 41 of the uppermost second frame scaffolding 40. In this case, a square steel pipe 58 is supported in the receiving portion 52c of the gripping member 52 having a short shaft portion 52s. Furthermore, a square steel pipe 57 is placed on top of the square steel pipe 58 via a panel 60 so as to be supported by the receiving portion 52c of the gripping member 52 having a long shaft portion 52s of height H2.

[0034] Furthermore, the end of the square steel pipe 56 is placed on the center of the square steel pipe 58 via the panel 60. Then, the gripping member 51 is placed so as to sandwich the center of the square steel pipe 56. On the other hand, the end of the square steel pipe 55 is placed on the center of the square steel pipe 57 via the panel 60. Then, the gripping member 51 is placed so as to sandwich the center of the square steel pipe 55. As a result of the above, the switching unit 25 is installed as shown in FIG.

[0035] Next, the first stage of the upper scaffolding is installed (Step S17). Specifically, first, the pedestal 31a of the first building frame 31 of the first frame scaffolding 30 is connected to the base portion 51b of the gripping member 51 of the switching portion 25.

[0036] 11, the first stage (lowest stage) of the first framework 30 is assembled using the first building frame 31 connected to the gripping member 51. Then, the upper part of the guide pipe 65 is fixed to the first building frame 31 of the assembled first framework 30 using a clamp. In addition, the net that was hung on the single pipe 66 is re-hanged on the first building frame 31 of the first framework 30, and then the single pipe 66 is removed.

[0037] Next, a horizontal tie for the first stage of the upper scaffolding is installed (step S18). Specifically, a horizontal tie 70 is installed to connect the first building frame 31 of the first frame scaffolding 30 of the first stage to the high-rise building 10. Thereafter, the clamp of the guide pipe 65 fixed to the first building frame 31 of the first frame scaffolding 30 is loosened to release the guide pipe 65 from its fixed state. FIG. 12 shows an enlarged view of the switching section 25 and its surroundings after the first building frame 31 of the first frame scaffolding 30 has been installed.

[0038] Next, the second stage of the upper scaffolding is installed (step S19). Specifically, the second stage of the first frame scaffolding 30 is assembled on the first stage of the first frame scaffolding 30 installed as described above by the same construction as in the conventional method.

[0039] Furthermore, the wall connector for the second stage of the upper scaffolding is installed (step S20). Specifically, as shown in FIG. 13, when the second stage first frame scaffolding 30 is assembled, a wall connector 47 that connects to the floor slab 11 of the high-rise building 10 is attached to the lower part of the first building frame 31 of the second stage first frame scaffolding 30.

[0040] Then, soundproofing panels are installed on the outside of the first step of the upper scaffolding (step S21). Specifically, the soundproof panel 75 is attached to the upper part of the first building frame 31 of the first frame scaffolding 30 on the outside of the first frame scaffolding 30 of the first stage (the opposite side to the high-rise building 10).

[0041] Next, a soundproof sheet is installed between the top step of the lower scaffolding and the first step of the upper scaffolding (step S22). Specifically, the soundproof sheet 76 is attached so as to extend from the bottom of the first frame scaffolding 30 on the first stage to the top of the second frame scaffolding 40 on the top stage, including the switching section 25.

[0042] Thereafter, the scaffolding above the second step of the upper scaffolding is assembled (step S23). Specifically, the third and subsequent stages of the first framework scaffolding 30 are assembled on top of the second stage of the first framework scaffolding 30 installed as described above, using construction similar to that of the conventional method. In this case, when each stage is assembled, a wall connector is provided at the bottom of the first building frame 31 of the first framework scaffolding 30 on that stage. In this case as well, soundproof panels are installed on the outside of the first framework scaffolding 30 each time the assembly of the first framework scaffolding 30 for each stage is completed. Then, the first framework scaffolding 30 is assembled up to the top floor of the high-rise building 10. In this manner, the framework scaffolding structure 20 is constructed.

[0043] (action) The framework scaffolding structure 20 has an upper portion 21, a lower portion 22, and a transition portion 25. The upper portion 21 is composed of a first framework scaffolding 30 having a first building frame 31 with a wide first width L1, and the lower portion 22 is composed of a second framework scaffolding 40 having a second building frame 41 with a second width L2 that is narrower than the first width L1 of the first building frame 31. In the transition portion 25, the load applied to one leg 31a of the first building frame 31 is distributed to multiple legs 41a of the second building frames 41.

[0044] According to this embodiment, the following effects can be obtained. (1) The framework scaffolding structure 20 of this embodiment has an upper portion 21, a lower portion 22, and a switching portion 25. The upper portion 21 is composed of a first framework scaffolding 30 having a wide first building frame 31, and the lower portion 22 is composed of a second framework scaffolding 40 having a second building frame 41 narrower than the first building frame 31. In the switching portion 25, the load applied to the pedestal 31a of the first building frame 31 is transferred so as to be distributed and supported by the pedestals 41a of the multiple second building frames 41. Therefore, since the load applied to one pedestal 31a is supported by the multiple pedestals 41a, the framework scaffolding can be made taller by the height of the second framework scaffolding 40.

[0045] (2) The switching unit 25 of this embodiment includes a gripping member 51 connected to the bottom of the pedestal 31a of the first building frame 31 and having a receiving portion 51c that is open at the bottom, and a gripping member 52 connected to the top of the pedestal 41a of the second building frame 41 and having a receiving portion 52c that is open at the top. Furthermore, the switching unit 25 includes square steel pipes 55-58 gripped by the gripping members 51, 52, and a panel 60 that abuts against the square steel pipes 55-58. This allows the load applied to the pedestal 31a of the first building frame 31 to be distributed and supported by the multiple pedestals 41a of the second building frame 41.

[0046] (3) The switching section 25 of the frame scaffolding structure 20 of this embodiment is constructed using gripping members 51, 52 constituted of parts of a main support jack used in normal scaffolding structures, square steel pipes 55 to 58, a panel 60, and a crosspiece 61. Therefore, the switching section 25 can be constructed using general-purpose products.

[0047] (4) In this embodiment, battens 61 are arranged between a pair of side walls of the holding members 51, 52 of the framework scaffolding structure 20 and the square steel pipes 55-58. This allows the square steel pipes 55-58 to be fixed to the holding members 51, 52 using the battens 61, which are members larger than the mesh of the net provided on the outside of the framework scaffolding structure 20.

[0048] (5) In the frame scaffolding structure 20 of this embodiment, after the top floor of the second frame scaffolding 40 is constructed, the guide pipe 65 is attached. Thereafter, the switching unit 25 is placed on the second building frame 41 of the second frame scaffolding 40, and the first frame scaffolding 30 is assembled using the guide pipe 65. This allows the first frame scaffolding 30 to be accurately attached to a position corresponding to the second frame scaffolding 40.

[0049] (6) In the frame scaffolding structure 20 of this embodiment, after the first frame scaffolding 30 on the first stage directly above the switching section 25 is installed, a horizontal tie 70 is installed to connect the first frame scaffolding 30 to the high-rise building 10. This allows the first frame scaffolding 30 on the first stage directly above the switching section 25 to be stably installed.

[0050] This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction. In the above embodiment, the gripping members 51, 52 and the square steel pipes 55-58 located therein are fixed using crosspieces 61. The member for fixing the gripping members 51, 52 and the square steel pipes 55-58 is not limited to the crosspieces 61. For example, fasteners such as bolts, nuts, and wires may be used for fixing. However, if fasteners smaller than the gaps in the mesh of the net are used, there is a risk of them falling outside, so members larger than the mesh of the net are preferable.

[0051] In the above embodiment, square steel pipes 55 to 58 are used as the first and second transmission members gripped by the gripping members 51 and 52. The first and second transmission members are not limited to square steel pipes as long as they are members capable of horizontally transmitting the load from the legs of the scaffolding. For example, they may be made of square timber made of wood or metal material. In this case, the shape of the first and second transmission members is not limited to members having a rectangular cross section. For example, they may be long members having a hexagonal cross section with horizontal upper and lower surfaces.

[0052] In the above embodiment, the second framework 41 having the second width L2 that is half the first width L1 of the first framework 31 is used as the second framework 40. The second width L2 of the second framework 40 constituting the lower portion 22 is not limited to being half the first width L1 of the first framework 30 constituting the upper portion 21. The second framework 40 has a framework having a width narrower than the width of the first framework 31, and only needs to be able to support the load of a leg 31a of one of the first frameworks 31 by distributing it among the legs 41a of the second frameworks 41 of the multiple second frameworks 40. Furthermore, although a frame having a first width L1 of 1829 mm was used as the first frame 31, a frame having a different size may be used.

[0053] In the above embodiment, multiple legs 41a are arranged for one leg 31a in the X direction shown in Fig. 1. The direction in which the load applied to the leg 31a is distributed is not limited to the X direction, and the load may also be distributed in the Y direction shown in Fig. 6, for example.

[0054] In the above embodiment, the framework scaffolding structure 20 is installed on the ground. The framework scaffolding structure described above is not limited to being assembled from the ground, and may be assembled on the horizontal members, for example, by using the upper surfaces of a plurality of horizontal members fixed to a building as the installation surface.

[0055] Next, the technical ideas that can be understood from the above embodiment and other examples will be described below. (a) A framework scaffolding structure as described in any one of claims 1 to 3, characterized in that the first framework scaffolding at the lowest stage connected to the first gripping member is connected to the building via a horizontal connector.

[0056] (b) A construction method for a frame scaffolding structure as described in claim 4, characterized in that after assembling the second frame scaffolding, a guide pipe extending vertically is attached to the second building frame. [Explanation of symbols]

[0057] H1, H2...height, L1...first width, L2...second width, L3...length, 10...high rise building, 11...floor slab, 20...frame scaffolding structure, 21...upper part, 22...lower part, 25...switching part, 30...first frame scaffolding, 31...first building frame, 31a, 41a...legs, 40...second frame scaffolding, 41...second building frame, 46, 47...wall joint, 51...gripping member as first gripping member, 5 2...gripping member as second gripping member, 51b, 52b...base portion, 51c, 52c...receiving portion, 51s, 52s...shaft portion, 55, 56, 57, 58...square steel pipe as long object, 60...panel, 61...crosspiece as first fixing member and second fixing member, 65...guide pipe, 66...single pipe, 70...horizontal connector, 75...soundproof panel, 76...soundproof sheet.

Claims

1. A framework scaffolding structure provided on the outside of a building and constructed by connecting a plurality of framework scaffoldings, A plurality of first frame scaffoldings having a first building frame of a first width; A second frame having a second width narrower than the first width and arranged below the first frame scaffold; A frame scaffolding structure characterized by comprising a switching section that distributes and supports the load of the pier of the first building frame of the first frame scaffolding to the piers of the multiple second building frames of the second frame scaffolding.

2. The switching unit is A first gripping member connected to the lowest part of the pedestal of the first building frame and having a receiving portion that is open downward; A second gripping member connected to the top of the second frame and having a receiving portion that is open at the top; First and second transmission members for elongated objects which are inserted through the first and second gripping members, respectively; The framework scaffolding structure as described in claim 1, characterized in that it is provided with a transmission plate that abuts the first transmission member and the second transmission member and is positioned at a position corresponding to the load transmitted from the first transmission member.

3. a first fixing member that fixes the first gripping member and the first transmission member; A second fixing member that fixes the second gripping member and the second transmission member, The framework scaffolding structure according to claim 2, characterized in that at least one of the first fixing member and the second fixing member is a crosspiece arranged between the first and second transmission members and the first and second gripping members.

4. A construction method for a framework scaffolding structure that is provided on the outside of a building and is configured by connecting a plurality of framework scaffoldings, The frame scaffolding structure includes a plurality of first frame scaffoldings having a first building frame of a first width, a plurality of second frame scaffoldings having a second building frame of a second width narrower than the first width and disposed below the first frame scaffoldings, and a switching unit that distributes and supports the load of the pedestal of the first building frame of the first frame scaffolding to the pedestal of the plurality of second building frames of the second frame scaffolding, The switching unit includes a first gripping member connected to the bottom of the pedestal of the first building frame and having a receiving portion that is open downward, a second gripping member connected to the top of the pedestal of the second building frame and having a receiving portion that is open upward, first and second transmission members that are elongated objects that are inserted into the first and second gripping members, respectively, and a transmission plate that abuts against the first transmission member and the second transmission member and is positioned at a position corresponding to the load transmitted from the first transmission member, After assembling the plurality of second framework scaffolds, the second gripping member is connected to the top of the pedestal of the second framework scaffold, The second transmission member is disposed within the second gripping member; The first transmission member is disposed on the second transmission member via the transmission plate; The first gripping member is disposed to grip the first transmission member; A construction method for a frame scaffolding structure, characterized in that a pillar of the first building frame is connected to the first gripping member.

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