Construction method of structure and stage structure

Abstract

To provide a construction method of a structure and a stage structure for efficiently constructing the structure.SOLUTION: The stage structure 20 has a plurality of mast M1 parts and M2 parts which are erected, and an upper stage 30 and a lower stage 50 which are supported by the mast M1 parts and M2 parts and can be elevated. The stage structure 20 includes a lifting device M1 for lifting the upper stage 30 along the mast 31c and the M2, and a lifting device M1 for lifting the lower stage 50 along the mast 31c and the M2 independently of the upper stage 30. Then, the resources are conveyed to the upper stage 30 by using the lower stage 50, and the multistory shear wall 15 is constructed by using the resources conveyed to the upper stage 30.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a method for constructing a structure and a stage structure for use therein. [Background technology]

[0002] Conventionally, a structure in which two structures with different stiffness are connected by a vibration control device has been known as a structure for reducing seismic forces acting on buildings and other structures (see, for example, Non-Patent Document 1 and Patent Document 1). The structure (dual frame system) described in Non-Patent Document 1 and Patent Document 1 has a rigid first building constructed in the center of the building and a flexible second building made of columns and beams placed around the periphery of the first building. These first and second buildings are then connected by a vibration control device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-211506 [Non-patent literature]

[0004] [Non-Patent Document 1] “Obayashi Solutions / Technology Dual Frame System (DFS)”, [online], [Retrieved May 31, 2024], Internet<URL:https: / / www.obayashi.co.jp / solution_technology / detail / tech032.html> Summary of the Invention [Problem to be solved by the invention]

[0005] When constructing the central Building 1 from reinforced concrete, it was necessary to use a crane installed on the building site to lift the assembled rebar and concrete formwork to be buried in Building 1. However, when the building site is small, there is not enough space to assemble and lift the rebar, making it difficult to efficiently construct Building 1. [Means for solving the problem]

[0006] A method for constructing a structure that solves the above-mentioned problems is a method for constructing a structure using a stage structure having an upper stage and a lower stage supported by a plurality of supports, the method comprising: a first lifting device that raises and lowers the upper stage along the supports; and a second lifting device that raises and lowers the lower stage along the supports independently of the upper stage; the method transports resources to the upper stage using the lower stage, and uses the resources transported to the upper stage to construct the structure. Note that, here, "resources" refers to at least one of the resources used in construction work, such as people and materials.

[0007] Furthermore, a stage structure that solves the above problem is a stage structure that includes an upper stage and a lower stage supported by multiple pillars, and is equipped with a first lifting device that raises the upper stage along the pillars, and a second lifting device that raises and lowers the lower stage along the pillars independently of the upper stage. [Effects of the Invention]

[0008] According to the present disclosure, structures can be constructed efficiently. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a longitudinal cross-sectional view illustrating a structure constructed by a method for constructing a structure according to an embodiment, and a stage structure used to construct the structure. [Figure 2] FIG. 2 is a vertical cross-sectional view of a stage structure according to the embodiment. [Figure 3] FIG. 2 is a perspective view of the stage structure according to the embodiment, seen obliquely from above. [Figure 4] FIG. 10 is a plan view below the scaffolding of the upper stage in the embodiment. [Figure 5] FIG. 2 is a top view of an upper stage according to the embodiment. [Figure 6] FIG. 2 is a perspective view of the upper stage in the embodiment, seen obliquely from below. [Figure 7] FIG. 2 is an enlarged plan view of a main part of an upper stage in the embodiment. [Figure 8] FIG. 8 is a longitudinal cross-sectional view taken along line 8-8 in FIG. 5. [Figure 9] FIG. 2 is a plan view of a lower stage in the embodiment. [Figure 10] FIG. 10 is a longitudinal cross-sectional view taken along line XX in FIG. 9. [Figure 11] 1 is a flowchart illustrating the initial processing procedure in a method for constructing a structure according to an embodiment. [Figure 12] FIG. 1 is a front view illustrating the processing procedure on the Nth floor of the construction method for a structure according to an embodiment. [Figure 13] FIG. 1 is a front view illustrating a method for constructing a structure according to an embodiment. [Figure 14] FIG. 1 is a front view illustrating a method for constructing a structure according to an embodiment. [Figure 15] FIG. 1 is a front view illustrating a method for constructing a structure according to an embodiment. [Figure 16] FIG. 1 is a front view illustrating a method for constructing a structure according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of a method for constructing a structure and a stage structure will be described below with reference to Figures 1 to 16. Here, the structure will be described as a case where a multi-story earthquake-resistant wall is constructed at the center of a DFS (dual frame system).

[0011] Figure 1 is a cross-sectional perspective view of a key part of a DFS building 10 in the middle of construction. This building 10 has a rigid multi-story earthquake-resistant wall 15 constructed in the center and a flexible structure 11 arranged around the periphery of this multi-story earthquake-resistant wall 15, connected by vibration control devices (not shown). The flexible structure 11 is, for example, a house made of reinforced concrete. The multi-story earthquake-resistant wall 15 is, for example, a parking lot made of reinforced concrete.

[0012] 2 and 3 are a front view and a perspective view of the stage structure 20 in FIG. The stage structure 20 includes masts M1 and M2, an upper stage 30 as a stage section, and a lower stage 50 located below the upper stage 30.

[0013] 4 and 5 are a plan view and a top view of the upper stage 30. Unlike Fig. 5, Fig. 4 shows the upper stage 30 with the scaffolding boards 36 removed, and does not show wall connectors 25, support members 41, and brackets 42, which will be described later. 4 and 5, the multi-story earthquake-resistant wall 15 has a horizontal cross section that is substantially rectangular. Inside the multi-story earthquake-resistant wall 15, a plurality of (four) masts M1 and M2 are erected at a distance from each other.

[0014] (Mast M1, M2 configuration) 2 and 3, four masts M1, M2 are provided spaced apart inside the multistory earthquake-resistant wall 15. The masts M1, M2 function as supports, and two masts M1, M2 are arranged (in pairs) on each of the opposing wall surfaces of the multistory earthquake-resistant wall 15.

[0015] Each mast M1, M2 has three vertical members 21, multiple horizontal members 22 connecting the vertical members 21 horizontally, and multiple diagonal members 23 connecting the intersections of the vertical members 21 and horizontal members 22 diagonally. The vertical members 21 are positioned at the vertices of an equilateral triangle. Each mast M1, M2 can be made taller by adding blocks on top of it, each block having a height corresponding to the height of each floor of the house. These blocks correspond to the new support members to be added.

[0016] Furthermore, one rack of the rack-and-pinion mechanism is fixed to each of the masts M1 and M2. Each rack extends vertically and has teeth formed in the vertical direction. The upper end of each rack is fixed to the upper end of the corresponding mast M1 and M2, and the main body of each rack is also fixed to the corresponding mast M1 and M2 as appropriate.

[0017] (Configuration of the entire stage structure 20 and wall joint 25) Fig. 6 is a perspective view of the upper stage 30 as seen from below, and Fig. 7 is an enlarged view of the main part of the top view in Fig. 2. Fig. 8 is a cross-sectional view taken along line 8-8 in Fig. 5.

[0018] As shown in Figures 1 to 3, 5 and 7, each mast M1, M2 is provided with a wall joint 25 that connects it to the multi-story earthquake-resistant wall 15. The wall joint 25 connects the inside of the completed part of the multi-story earthquake-resistant wall 15 to each mast M1, M2.

[0019] As shown in FIG. 1, an upper stage 30 and a lower stage 50, which are supported by the masts M1 and M2 and move up and down, are arranged inside the multi-story earthquake-resistant wall 15 with a space between them.

[0020] (Configuration of Upper Stage 30) Next, the configuration of the upper stage 30 will be described. As shown in FIGS. 2 to 7, the upper stage 30 is provided with a pair (two) of lifting platforms 31 arranged opposite each other.

[0021] As shown in Figures 2 and 6, the lifting scaffold 31 is a lift climber (lifting scaffold) that ascends and descends along a pair of masts M1 (M2). Each lifting scaffold 31 includes a deck section 31a made of flat plates, a truss structure section 31b supporting the deck section 31a, and lifting devices 31c. Each lifting scaffold 31 is provided with two lifting devices 31c, the number of which corresponds to the number of masts M1 (M2) it is connected to. Each lifting device 31c functions as a first lifting device and includes a motor as a driving source for ascending and descending, and a pinion engaged with the output shaft of the motor. This pinion is threadedly engaged with the rack of a rack-and-pinion mechanism fixed to the masts M1 and M2. In this embodiment, a lift climber (lifting scaffold) "PW-35 Twin Mast" manufactured by Takamiya Corporation is used.

[0022] Furthermore, as shown in FIGS. 2, 4 and 5, the upper stage 30 has a main girder 33 spanning the deck portions 31a of the pair of opposing lifting platforms 31, and sub-girders 34 and 35 arranged on the main girder 33.

[0023] 4, the girders 33 function as horizontal structural members, are made of H-shaped steel, and extend in a direction perpendicular to the extension direction of the deck section 31a. A total of six girders 33 are arranged at positions sandwiching the opposing masts M1 and M2 and at the ends of the upper stage 30.

[0024] The minor beams 34, 35 are made of H-shaped steel that is smaller than the main beam 33 and are arranged perpendicular to the main beam 33. The minor beam 34 is arranged in the center of the upper stage 30 and is made of a member that is thicker and larger than the minor beam 35. Note that in the perspective view of Figure 6, the minor beams 34, 35 at the periphery of the upper stage 30 are not shown.

[0025] As shown in Figure 5, the upper stage 30 has scaffolding boards 36 laid on the joists 34, 35. In this case, the scaffolding boards 36 are arranged except for the insertion area 36a shown in Figure 4, through which the masts M1, M2 are inserted, and the opening 37. The lower end of a mast enclosing member 38 is fixed to the inside of the insertion area 36a. This mast enclosing member 38 has a U-shaped horizontal cross section and is a plate member that surrounds the masts M1, M2. Furthermore, in the insertion area 36a, a closing plate 39 is fixed outside the masts M1, M2 (on the multi-story earthquake-resistant wall 15 side).

[0026] The opening 37 is located between the two masts M1. A cover member (not shown) capable of closing the opening 37 is provided on the upper surface of the opening 37. 6, the upper end of a ladder 40 is fixed to the outer side surface of the opening 37. The ladder 40 extends vertically to a position lower than the lower end of the climbing platform 31.

[0027] 2, 3, and 6 to 8, in the upper stage 30, downwardly extending support members 41 are provided at both ends of the four girders 33 sandwiching the masts M1 and M2. The support members 41 are fixed to the upper surfaces of brackets 42.

[0028] The bracket 42 is detachably fixed to the multi-story shear wall 15 using anchors (not shown) at a position a predetermined distance lower than the upper stage 30. In this embodiment, the bracket 42 is provided in the multi-story shear wall 15 at a position (height) lower than the area of ​​the last formed story and at a position that is easy to attach. The bracket 42 supports the weight of the upper stage 30 on the multi-story shear wall 15.

[0029] 2, an end of a reinforcing member 43 extending horizontally and an end of a reinforcing member 44 extending diagonally are fixed to the support member 41. The reinforcing members 43, 44 are connected to the support member 41 and to members of the truss structure part 31b of the lifting scaffolding 31 of the upper stage 30, members surrounding the lifting device 31c, and the like, to support the upper stage 30.

[0030] (Configuration of the lower stage 50) Next, the configuration of the lower stage 50 shown in FIG. 2 will be described. The lower stage 50 moves up and down independently of the upper stage 30. In this embodiment, the lower stage 50 is used to perform the work of attaching and detaching the brackets 42, and to transport people, materials, etc. to the upper stage 30.

[0031] Fig. 9 is a top view of the lower stage 50, and Fig. 10 is a cross-sectional view taken along line XX in Fig. 9. Note that handrails 59, which will be described later, are omitted in Fig. 9. The lower stage 50 shown in FIG. 2, like the upper stage 30, is equipped with a pair (two) of lifting scaffolds 51 arranged opposite each other. Like the lifting scaffold 31, the lifting scaffold 51 is a lift climber (lifting scaffold) that ascends and descends along a pair of masts M1 (M2). The lifting scaffold 51 has a configuration similar to that of the lifting scaffold 31, and is equipped with a deck section 51a, a truss structure section 51b that supports the deck section 51a, and a lifting device 51c. Each lifting device 51c functions as a second lifting device, and, like the lifting device 31c, is equipped with a motor that serves as a driving source for ascending and descending, and a pinion engaged with the output shaft of the motor. The pinion is threadedly engaged with a rack fixed to the masts M1 and M2.

[0032] As shown in FIG. 9 , the lower stage 50 has a floor 53 spanning the deck portions 51 a of a pair of opposing lifting platforms 51, multiple beams 55, and scaffolding boards 56. The floor 53 functions as a horizontal structural member. The multiple beams 55 are spaced apart in a direction perpendicular to the extension direction of the floor 53. The scaffolding boards 56 are placed on the beams 55 and engaged with and fixed to the beams 55. Similar to the scaffolding boards 36 of the upper stage 30, the scaffolding boards 56 are laid out except for insertion regions 56 a through which the masts M1 and M2 are inserted. Furthermore, similar to the upper stage 30, the lower stage 50 has a mast enclosing member 58 whose lower end is fixed inside the insertion region 56 a. Similar to the mast enclosing member 38, the mast enclosing member 58 is a U-shaped plate member that surrounds the masts M1 and M2.

[0033] 2, 3, and 10, a handrail 59 is provided on the lower stage 50 so as to surround the peripheral edge of the scaffolding board 56. An access hatch (not shown) is provided in a part of the handrail 59. The access hatch is an opening provided on the side of the lower stage 50 for entering the stage.

[0034] 2, 3, 9, and 10, a staircase section 60 is fixed to the lower stage 50 on the deck section 51a and the scaffolding boards 56. The staircase section 60 is provided at a position corresponding to the ladder 40 of the upper stage 30.

[0035] The staircase section 60 comprises four spaced apart pillars 61, connecting members (not shown) connecting the pillars 61, a landing section 62, a side enclosure plate 63, and a ladder section 65. The landing section 62 is supported by the pillars 61 and is provided at the upper end of the ladder section 65 of the lower stage 50. The side enclosure plate 63 covers three side surfaces of the landing section 62 other than the side surface on the ladder section 65 side. The staircase section 60 is set so that the ladder 40 of the upper stage 30 is located inside the side enclosure plate 63. The ladder section 65 is used to travel between the top surface of the lower stage 50 and the landing section 62.

[0036] The lower stage 50 can approach the upper stage 30 up to a height where the ladder 40 of the upper stage 30 abuts against the landing 62 of the stairway section 60. When the lowest end of the ladder 40 is located near the top surface of the landing 62, a person can ascend from the lower stage 50 to the upper stage 30 by climbing the ladder section 65 of the stairway section 60, the landing 62, and the ladder 40, and then passing through the opening 37. It is also possible to descend from the upper stage 30 to the lower stage 50 by passing through the opening 37 and via the ladder 40, the landing 62, and the ladder section 65. Furthermore, materials can be placed on the lower stage 50 on the ground floor of the multi-story earthquake-resistant wall 15, and after the lower stage 50 is raised to near the upper stage 30, the materials can be raised from the lower stage 50 to the upper stage 30. In this embodiment, the staircase section 60 of the lower stage 50 and the ladder 40 of the upper stage 30 form a vertical movement facility.

[0037] (Construction method of multi-story earthquake-resistant wall 15) Next, a method for constructing the multi-story earthquake-resistant wall 15 using the stage structure 20 configured as above will be described with reference to FIGS.

[0038] First, a method for installing the upper stage 30 and the masts M1 and M2 will be described. As shown in Fig. 11, first, the foundation of the multi-story earthquake-resistant wall is constructed (step S11). Specifically, in the building 10, the foundation portion where the flexible structure 11 and the multi-story earthquake-resistant wall 15 are connected is constructed using a large crane installed on the site where the building 10 is to be constructed, as in the conventional case.

[0039] Next, the lifting scaffolding for the upper stage is installed (step S12). Here, the lifting scaffolding 31 for the upper stage 30 is assembled. Specifically, the installation position is protected with a steel plate, and then the lifting device 31c of the lifting scaffolding 31 is installed. Then, the deck section 31a and the truss structure section 31b are connected to construct the lifting scaffolding 31.

[0040] Next, the masts are installed (step S13). Specifically, the masts M1 and M2 are connected to the positions where they engage with the lifting device 31c of the constructed lifting scaffolding 31. In this case, racks are fixed to the masts M1 and M2, and the fixed racks are screwed onto the pinions of the motors of the lifting device 31c.

[0041] Next, the upper stage is assembled (step S14). Specifically, the main beam 33, the sub-beams 34 and 35, and the scaffolding boards 36 are placed on the climbing scaffolding 31. Furthermore, the mast surrounding members 38 are fixed so as to surround the masts M1 and M2, and the ladder 40 is installed in the opening 37.

[0042] Additionally, brackets 42 are fixed to the already constructed portion (here, the foundation) of the multi-story earthquake-resistant wall 15. Then, support members 41 are fixed on top of the brackets 42. Furthermore, support members 41 and the members of the truss structure portion 31b of the climbing scaffolding 31 are fixed with reinforcing members 43, 44. With the above, the assembly of the upper stage 30 is completed.

[0043] Next, the lifting scaffolding for the lower stage is set up (step S15). Specifically, the lifting scaffolding 51 for the lower stage 50 is installed so as to engage with the masts M1 and M2 that have already been erected.

[0044] Then, the lower stage is assembled (step S16). Specifically, the floor 53, beams 55, and scaffolding boards 56 are placed on the installed climbing scaffolding 51. Furthermore, the mast surrounding member 38 is fixed, and handrails 59 are installed. Then, the stair section 60 is fixed on top of the scaffolding boards 56.

[0045] Thereafter, a crane is placed on the upper stage (step S17). Specifically, a small crane 80 is hoisted onto a large tower crane installed on the site, and placed on the upper stage 30.

[0046] As described above, inside the base of the multi-story earthquake-resistant wall 15, the stage structure 20 including the upper stage 30 on which the small crane 80 is placed, the masts M1 and M2, and the lower stage 50 is arranged.

[0047] (Construction method for Nth floor of multi-story earthquake-resistant wall 15) Thereafter, the upper stage 30, the masts M1 and M2, and the lower stage 50 are used to construct the multi-story earthquake-resistant wall 15 in accordance with the procedure shown in FIG.

[0048] Here, a case where the Nth floor (target portion) of the multi-story earthquake-resistant wall 15 is constructed will be described. As shown in Figure 13, just before the Nth floor is constructed, the N-1th floor, which is the floor immediately below it, is constructed. Concrete formwork 70 is placed on the side of the N-1th floor portion of the constructed multi-story earthquake-resistant wall 15. In addition, a plurality of reinforcing bars 15R extend upward and protrude from the N-1th floor portion. In this case, support members 41 fixed to the ends of the main girders 33 are fixed to brackets 42 fixed to the N-2th floor portion.

[0049] Then, N stories of multi-story earthquake-resistant walls are constructed (step S21). Specifically, first, a large crane on the premises is used to load the reinforcing bars that will form the Nth story onto the upper stage 30. After that, the loaded reinforcing bars are assembled on the upper stage 30.

[0050] Next, as shown in FIG. 14, the assembled reinforcing bar 15RN is lifted up using a small crane 80 on the upper stage 30, and then joined to the reinforcing bar 15R protruding from the N-1th floor directly below.

[0051] As shown in Figure 15, once the placement of reinforcing bars 15RN on the Nth floor is complete, the concrete formwork 70 placed on the N-1th floor is removed. The removed concrete formwork 70 is then raised one floor and placed on the Nth floor. Concrete is then poured into the concrete formwork 70 and allowed to cure.

[0052] Next, masts are added (step S22). Specifically, blocks M1a and M2a are added on top of the current masts M1 and M2. These blocks M1a and M2a are the portions of the masts M1 and M2 that correspond to one floor. By adding the blocks M1a and M2a, the height of the masts M1 and M2 becomes equal to the height of the added blocks M1a and M2a.

[0053] 16, the bracket removal work is carried out (step S23). Specifically, first, the small crane 80 above the upper stage 30 is carried out using a tower crane. Next, the lower stage 50 is raised to the height of the bracket 42 fixed to the multistory earthquake-resistant wall 15. Then, a worker on the lower stage 50 removes the bracket 42.

[0054] Next, the upper stage is raised (step S24). Specifically, the lifting device 31c of the lifting scaffolding 31 of the upper stage 30 is driven to raise the upper stage 30 along the masts M1 and M2. In this case, the upper stage 30 is raised to approximately the same height as the top part of the Nth floor portion being cured.

[0055] Next, the bracket fixing work is performed (step S25). Specifically, the lower stage 50 is raised to a position (height) where the bracket 42 will be newly fixed. Here, the lower stage 50 is raised by one floor to fix the bracket 42 to the N-1 floor portion of the multi-story earthquake-resistant wall 15. Then, a worker on the lower stage 50 fixes the bracket 42 to the N-1 floor portion. Thereafter, the small crane 80 that was previously carried out is carried into the upper stage 30 using a tower crane.

[0056] After the concrete on the Nth floor has cured, the N+1th floor (directly above) will be constructed using the procedure described above. By repeating the above process, the multi-story earthquake-resistant wall 15 is constructed up to the top floor.

[0057] Thereafter, when the entire multi-story earthquake-resistant wall 15 has been constructed, a tower crane is used to carry the small crane 80 out from the upper stage 30. Then, after the upper stage 30 is dismantled, the dismantled members are carried out from the inside of the multi-story earthquake-resistant wall 15 to the outside using the tower crane.

[0058] (Operation of the embodiment) The upper stage 30 and the lower stage 50 are provided with lifting devices 31c and 51c, respectively, so that the lower stage 50 can be driven to move up and down independently of the upper stage 30.

[0059] According to this embodiment, the following effects can be obtained. (1) The stage structure 20 of this embodiment comprises an upper stage 30 and a lower stage 50 that rises and falls independently of the upper stage 30. As a result, even if the upper stage 30 is gradually raised according to the height of the multi-story earthquake-resistant wall 15 during construction work, resources (people and materials) can be supplied to the upper stage 30 using the lower stage 50. This allows construction work on the upper stage 30 to be carried out efficiently.

[0060] (2) In the stage structure 20 of this embodiment, the upper stage 30 and the lower stage 50 rise and fall along the masts M1, M2. Therefore, the upper stage 30 and the lower stage 50 can be raised and lowered individually using the same masts M1, M2. Furthermore, since blocks M1a, M2a can be added to the masts M1, M2, the masts M1, M2 can be gradually increased in height according to the height to which the multistory earthquake-resistant wall 15 is constructed, and the range of elevation of each stage (30, 50) can be increased.

[0061] (3) In this embodiment, the masts M1, M2, upper stage 30, and lower stage 50 are arranged inside the rectangular frame-shaped multi-story earthquake-resistant wall 15. This allows the internal space of the multi-story earthquake-resistant wall 15 to be effectively utilized, so that the building 10 can be constructed efficiently even if the site on which the building 10 is to be constructed is small.

[0062] (4) In this embodiment, the upper stage 30 includes a lifting scaffolding 31 that is supported by two pairs of opposing masts M1, M2 and rises, a main girder 33 and sub-girders 34, 35 that are hung across the lifting scaffolding 31, and a scaffolding board 36 on the top surface. The lower stage 50 includes a lifting scaffolding 51 that is supported by the masts M1, M2 and rises, a floor 53 and multiple beams 55 that are hung across the lifting scaffolding 51, and a scaffolding board 56 on the top surface. This allows the upper stage 30 and the lower stage 50 to be constructed with a simple configuration.

[0063] (5) In this embodiment, the upper stage 30 is provided with a ladder 40 on the underside of the periphery of the opening 37, and the lower stage 50 is provided with a staircase section 60 that matches the position of the ladder 40. By bringing the lower stage 50 closer to the upper stage 30, the lower end of the ladder 40 is brought closer to the landing section 62 of the staircase section 60. This allows movement between the upper stage 30 and the lower stage 50. Furthermore, the lower stage 50 can only approach the lifting scaffolding 31 located on the underside of the upper stage 30. Because the ladder 40 extends to a position lower than the lifting scaffolding 31, providing the staircase section 60 continuing from the ladder 40 on the lower stage 50 allows efficient movement to and from the upper stage 30.

[0064] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility. The stage structure 20 of the above embodiment includes an upper stage 30 and a lower stage 50, each having a pair (two) of lifting scaffolds 31, 51 that are supported by two masts M1 (M2) and ascend. The number of lifting scaffolds in the stage structure and the number of supports supporting them are not limited to two. For example, the stage structure may be configured with a pair (two) of lifting scaffolds supported by a single support member (mast), or a combination of a lifting scaffold supported by a single support member and a lifting scaffold supported by two support members. Furthermore, the planar shape of the stage structure may be triangular, hexagonal, or the like. In the case of a hexagonal stage structure, for example, three lifting scaffolds may be used.

[0065] In the above embodiment, the upper stage 30 and the lower stage 50 are configured to be liftable (movable up and down). However, the upper stage 30 may be configured to be unable to descend as long as it is configured to be liftable.

[0066] In the above embodiment, the upper stage 30 and the lower stage 50 are provided with the ladder 40 and the staircase section 60, respectively. However, as long as a structure is provided that allows people to ascend and descend from the lower stage 50 to the upper stage 30, the structure is not limited to the ladder 40 and the staircase section 60. For example, the ladder 40 of the upper stage 30 may be made longer, and the staircase section 60 of the lower stage 50 may be omitted.

[0067] In the above embodiment, the multi-story earthquake-resistant wall 15 is constructed using the small crane 80 placed on the upper stage 30. Materials such as reinforcing bars and concrete formwork may also be placed on the upper stage 30, in addition to equipment such as the small crane 80.

[0068] The stage structure 20 of the above embodiment includes masts M1, M2, and an upper stage 30 and a lower stage 50 that are supported by the masts M1, M2 and move up and down. The stage structure 20 may also include more stages.

[0069] In the above embodiment, the construction of the multi-story earthquake-resistant wall 15 of the building 10 has been described. However, the method can also be used to construct structures other than the multi-story earthquake-resistant wall 15. It is particularly suitable for constructing structures with an enclosed internal space, such as a U-shaped horizontal cross section.

[0070] Next, the technical ideas that can be understood from the above-described embodiment and other examples will be described below. (a) the portion constituting the vertical movement facility is provided separately on the upper stage and the lower stage, The stage structure described in claim 4, characterized in that when the lower stage approaches the upper stage, the vertical movement equipment becomes integrated, allowing movement between the upper stage and the lower stage.

[0071] (b) The stage structure described in (a) or (b), characterized in that the upper stage and the lower stage are arranged inside a rectangular frame-shaped multi-story earthquake-resistant wall constructed in the center of a rectangular frame-shaped building. [Explanation of symbols]

[0072] M1, M2... Mast, M1a, M2a... Block, 10... Building, 11... Flexible structure, 15... Multi-story earthquake-resistant wall, 15R, 15RN... Steel bars, 20... Stage structure, 21... Vertical members, 22... Horizontal members, 23... Diagonal members, 25... Wall connections, 30... Upper stage, 31, 51... Lifting scaffolding, 31a, 51a... Deck section, 31b, 51b... Truss structure section, 31c, 51c... Lifting device, 33... Main beam, 34, 35... Small Beams, 36, 56...scaffolding boards, 36a, 56a...insertion area, 37...opening, 38, 58...mast enclosure member, 39...closure plate, 40...ladder, 41...support member, 42...bracket, 43, 44...reinforcement member, 50...lower stage, 53...floor, 55...beam, 59...handrail, 60...stair section, 61...column, 62...landing section, 63...side enclosure board, 65...ladder section, 70...concrete formwork, 80...small crane.

Claims

1. 1. A method of constructing a structure using a stage structure having an upper stage and a lower stage supported by a plurality of supports, comprising: a first lifting device that raises and lowers the upper stage along the support columns; a second lifting device that lifts and lowers the lower stage along the support column independently of the upper stage, using the lower stage to deliver resources to the upper stage; A method for constructing a structure, comprising constructing the structure using the resources transported to the upper stage.

2. The structure is made of reinforced concrete and is arranged around the lower stage, The method for constructing a structure according to claim 1, wherein a part of the structure is constructed by work by a person as the resource.

3. A stage structure including an upper stage and a lower stage supported by a plurality of columns, a first lifting device that lifts the upper stage along the support columns; a second lifting device that raises and lowers the lower stage along the support column independently of the upper stage.

4. 4. The stage structure according to claim 3, further comprising a vertical transfer facility that allows people to move between the upper stage and the lower stage.

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