Demolition method and protective equipment

Abstract

The present invention provides a building demolition method suitable for demolishing large, horizontally-oriented buildings, enabling the safe and easy demolition of such buildings. [Solution] The protective device 1 comprises a pair of rails 2 extending in the direction of demolition of the building 10, which are spaced apart on the roof of the building 10 in a direction perpendicular to the demolition direction of the building 10 in a plan view; a mobile frame 3 provided for each of the pair of rails 2, which has a running section 31 that runs on the rails 2 and an arm section 32 that extends from the running section 31 toward the starting end in the demolition direction; and a protective sheet 5 that is stretched and placed between the arm sections 32 of the mobile frame 3. When demolishing the building 10, the process of demolishing the demolition area of ​​the building 10 located below the protective sheet 5 is repeated while moving the mobile frame 3 from the starting end to the ending end in the demolition direction.

Description

Technical Field

[0001] The present invention relates to a building demolition method and a curing device used therefor.

Background Art

[0002] When demolishing a building in an urban area or the like, it is common to cover the entire building with a curing material such as a net to prevent the scattering and falling of demolition materials such as crushed pieces of the building structure and ensure safety. For example, Patent Document 1 describes a curing system in which a vertical support structure is constructed outside a building to be demolished, and the upper part of the building is covered with a scattering prevention curing body supported by an upper support body spanned between the uppermost parts of the vertical support structures.

[0003] Further, Patent Document 2 describes a demolition method in which rails extending in the longitudinal direction of the building are provided on both sides of the building to be demolished, a gate-shaped curing enclosure covering a part of the longitudinal direction of the building is installed on both rails, and the building is demolished inside the curing enclosure while sequentially moving the curing enclosure in the longitudinal direction of the building.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] The protective covering system described in Patent Document 1 is suitable for demolishing tall, narrow buildings, but not for demolishing low-rise buildings with a wide horizontal plane. In contrast, the demolition method described in Patent Document 2 is suitable for demolishing low-rise buildings with a wide horizontal plane, but it requires constructing a protective covering structure higher than the building on rails, which is time-consuming and increases the cost of temporary materials. Furthermore, it requires space to lay rails next to the building, making it difficult to apply in situations where usable space is limited.

[0006] This invention has been made in view of the above-mentioned problems, and aims to provide a building demolition method that is suitable for demolishing buildings with a large floor area and that allows for the safe and easy demolition of such buildings. [Means for solving the problem]

[0007] The first invention for solving the above problems is a demolition method characterized by using a protective device comprising: a pair of rails extending in the direction of demolition of the building, which are spaced apart on the roof of the building in a direction perpendicular to the demolition direction of the building in a plan view; a mobile frame having a running part that runs on the rails and an arm part that extends from the running part toward the starting end of the demolition direction; and a protective sheet that is stretched between the arm parts of the mobile frame, and repeating the process of demolishing the demolition area of ​​the building located below the protective sheet while moving the mobile frame from the starting end to the ending end of the demolition direction.

[0008] In the first invention, a mobile platform is moved in the demolition direction on a pair of rails installed on the roof of the building, and the process of demolishing the structure in the demolition area below the protective sheet stretched between the arms of the mobile platform is repeated. This realizes a demolition method suitable for demolishing buildings with a large floor area, and the building can be demolished safely and easily while preventing the scattering of demolition materials from above. Furthermore, the protective device does not need to cover the entire building or build the support structure of the protective sheet higher than the building, so the amount of temporary materials can be reduced and demolition costs can be reduced. In addition, since there is no need to lay rails next to the building, demolition work can be carried out even in limited spaces.

[0009] After moving the mobile frame along the demolition direction, and before demolishing the demolition area, it is desirable to extend the rail toward the terminal end by removing the starting end of the rail positioned on the roof of the demolition area of ​​the building and attaching it to the terminal end of the rail. This eliminates the need to install rails along the entire length of the building in the direction of demolition, thereby reducing the amount of temporary materials used.

[0010] The protective sheet is supported, for example, by a wire stretched between the arm sections. This simplifies the support structure for the protective sheet, allowing for a simpler and lighter overall design of the protective device.

[0011] The protective sheet comprises a top material positioned between the arm portions and side materials that are continuous with the top material and positioned to cover the sides along the demolition direction of the building. Preferably, the side materials are supported by being pulled from below by wires while the demolition area is being carried out. The aforementioned side panels prevent the scattering of demolition materials outwards in the width direction of the building. Furthermore, during demolition of the demolition area, the side panels can be supported by wires to prevent flapping due to wind.

[0012] The second invention is a protective device used when demolishing a building, comprising: a pair of rails extending in the direction of demolition of the building, which are spaced apart on the roof of the building in a direction perpendicular to the direction of demolition of the building in a plan view; a mobile frame provided for each of the pair of rails, which has a running part that runs on the rails and an arm part that extends from the running part toward the starting end in the direction of demolition; and a protective sheet that is stretched and placed between the arm parts of the mobile frame. The second invention is a protective device used in the demolition method of the first invention. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a building demolition method and the like that are suitable for demolishing a flat and large building and can safely and easily demolish the building.

Brief Description of the Drawings

[0014] [Figure 1] The figure which shows the curing device 1 used when demolishing the building 10 which is a demolition target. [Figure 2] The figure explaining the demolition method of the building 10. [Figure 3] The figure explaining the demolition method of the building ۱۰. [Figure 4] The figure explaining the demolition method of the building ۱۰. [Figure 5] The figure which shows the example which supports the rail 2 with the bundled material 14 provided in the support beam 13 of the steel plate roof 12. [Figure 6] The figure which shows the gantry 15. [Figure 7] The figure which shows the example where there is a level difference on the roof in the width direction of the building 10.

Embodiments for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

[0016] (1. Curing Device 1) Figs. 1(a) and (b) are views showing a curing device 1 used when demolishing a building 10 which is a demolition target by the demolition method according to an embodiment of the present invention. Figs. 1(a) and (b) show a perspective view and a side view of the curing device 1, respectively. The building 10 to be demolished is a flat and large low-rise structure, but it is not limited thereto. Further, the building 10 has steel columns and beams and uses concrete slabs for the floor and roof, but the structural form of the building is not particularly limited.

[0017] The curing device 1 has a rail 2, a mobile gantry 3, a curing sheet 5, etc.

[0018] The rail 2 is a guide for running the mobile gantry 3, and a pair of two rails are arranged on the roof of the building 10 so as to extend in the disassembly direction. The disassembly direction corresponds to the left - right direction in FIGS. 1(a) and 1(b), and in this embodiment, it corresponds to the longitudinal direction of the plane of the building 10. The building 10 is disassembled in order from the start - end side to the end - side in the disassembly direction. The start - end side of the disassembly direction corresponds to the left side in FIGS. 1(a) and 1(b), and the end - side corresponds to the right side in FIGS. 1(a) and 1(b).

[0019] A pair of two rails 2 are arranged at intervals in the width direction of the building 10. The width direction of the building 10 is a direction orthogonal to the longitudinal direction of the building 10, that is, the disassembly direction, in plan view. In this embodiment, a pair of two rails 2 are arranged at both ends in the width direction of the building 10, but the position of the rail 2 is not particularly limited.

[0020] The mobile gantry 3 is provided for each of the above - mentioned pair of rails 2. The mobile gantry 3 has a traveling part 31, an arm part 32, a wire 33, etc.

[0021] The traveling part 31 is a part that travels on the rail 2. In this embodiment, it is a rectangular parallelepiped - shaped frame member formed of steel. Each side of the frame is, for example, a box truss having a truss structure. However, the configuration, shape, dimensions, etc. of the traveling part 31 are not particularly limited. The traveling part 31 travels on the rail 2 while supporting the arm part 32 in a cantilever manner.

[0022] On the lower surface of the traveling part 31, traveling bogies 311 for traveling on the rail 2 are provided. The traveling bogies 311 are provided before and after in the disassembly direction, and at least one of the traveling bogies 311 travels by a motor. The motors of the traveling bogies 311 of both mobile gantries 3 are driven by receiving power supply from a common power source (not shown), and both mobile gantries 3 move simultaneously. The power source can be installed on the traveling part 31 of any one of the mobile gantries 3.

[0023] The arm portion 32 is a frame member formed from steel with a substantially triangular side profile. However, the configuration, shape, and dimensions of the running portion 31 are not particularly limited. The arm portion 32 is positioned to extend from the running portion 31 toward the starting end in the dismantling direction.

[0024] The wire 33 is a support material for supporting the protective sheet 5 and preventing sagging, and is stretched between the arm sections 32 of the two movable frames 3.

[0025] The protective sheet 5 is a sheet material such as a protective net, and prevents the scattering of demolition materials such as fragments of the building structure that occur during the demolition of the building 10. The protective sheet 5 is positioned by stretching it between the arm portions 32 of the two movable frames 3 and is supported by wires 33.

[0026] The protective sheet 5 has a top surface material 51 supported by a wire 33 and positioned between the arm portions 32, side materials 52 that hang down from the arm portions 32 outward in the width direction of the building 10 and are positioned to cover both sides of the building 10 along the demolition direction, and end materials 53 that close the space between the top surface material 51 and the roof of the building 10 at the front and rear in the demolition direction.

[0027] The top panel 51 is positioned to cover the area above the demolition area 11-1 of the building 10 in a plan view. The side panels 52 and end panels 53 are provided so as to be continuous with the top panel 51.

[0028] The side members 52 are supported by being pulled from below by ropes or other wires 4 during the demolition of the building 10's demolition area 11-1, thereby preventing them from flapping in the wind. If necessary, an overhang (not shown) is provided on the arm section 32 that extends outward in the width direction of the building 10, and the position of the side members 52 in the width direction of the building 10 can be adjusted by letting the side members 52 hang outward from this overhang.

[0029] (2. Demolition method for building 10) In the examples shown in Figures 1(a) and 1(b), the protective sheet 5 is positioned to cover the upper part of the demolition area 11-1 at the starting end of the demolition direction of the building 10. From this state, as shown in Figure 2, the demolition machinery 6 on the ground is used to demolish the structure of the building 10 located below the protective sheet 5 in the demolition area 11-1, starting from the upper floors and moving downwards.

[0030] Subsequently, the support of the side members 52 of the protective sheet 5 by the wire members 4 is released, and the movable frame 3 is moved to the end of the demolition direction as shown in Figure 3(a), and stopped at a predetermined stopping position. This makes the area below the protective sheet 5 a new demolition area 11-2 that is continuous with the previously mentioned demolition area 11-1, and the process proceeds to demolish the structure of this demolition area 11-2. A stopper (not shown) for stopping the movable frame 3 is detachably provided at the above stopping position of the rail 2.

[0031] Prior to the demolition of demolition area 11-2, as illustrated by arrow a, the end of the rail 2 remaining on the roof of demolition area 11-2 at the starting end in the demolition direction (hereinafter sometimes simply referred to as the starting end) is removed and attached to the end of the rail 2 at the end in the demolition direction (hereinafter sometimes simply referred to as the end). By rearranging the rail 2 in this way, the rail 2 is extended towards the end in the demolition direction, as shown in Figure 3(b). In addition, the side material 52 of the protective sheet 5 is supported again from below by the wire material 4. Then, as shown in Figure 3(c), the structure of demolition area 11-2 is demolished sequentially from the upper floor to the lower floor using the demolition heavy machine 6.

[0032] The process described in Figures 3(a) to 3(c) is repeated to move the mobile platform 3 to the end of the demolition direction while repeatedly demolishing the structure of the demolition areas 11-1, 11-2, ... below the protective sheet 5. This completes the demolition of the building 10 up to the final demolition area 11-n, as shown in Figure 4. In this example, prior to the demolition of the final demolition area 11-n, only the rails 2 remaining on the roof of that demolition area 11-n are removed, and the rails 2 are not repositioned.

[0033] Next, the support of the side members 52 of the protective sheet 5 by the wire members 4 is released, and the rails 2, movable frame 3, and protective sheet 5 are removed. These components are lowered to the ground using a crane (not shown). Finally, the remaining structure of the building 10 is dismantled using demolition machinery 6 and other equipment in the usual manner, completing the demolition of building 10.

[0034] As described above, in this embodiment, the process of moving the mobile frame 3 in the demolition direction on a pair of rails 2 installed on the roof of the building 10, while repeatedly demolishing the structure of the demolition areas 11-1, 11-2, ... 11-n below the protective sheet 5 stretched between the arm portions 32 of the mobile frame 3, is achieved. This realizes a demolition method suitable for demolishing a building 10 with a large planar area, and allows the building 10 to be demolished safely and easily while preventing the scattering of demolition materials from above. Furthermore, the protective device 1 does not require covering the entire building 10 or assembling the support structure of the protective sheet 5 higher than the building 10, thus reducing the amount of temporary materials and lowering demolition costs. In addition, since there is no need to lay rails 2 next to the building 10, demolition work can be carried out even in limited spaces.

[0035] Furthermore, after moving the mobile frame 3 in the demolition direction, the starting end of the rail 2 is removed and attached to the ending end of the rail 2, thereby rearranging the rail 2. This eliminates the need to install the rail 2 along the entire length of the building 10 in the demolition direction, thus reducing the amount of temporary materials used.

[0036] Furthermore, since the protective sheet 5 is supported by a wire 33 stretched between the arms 32 of the movable frame 3, the support structure for the protective sheet 5 is simplified, and the configuration of the protective device 1 can be simplified and made lighter.

[0037] Furthermore, during the demolition of building 10 in demolition areas 11-1, 11-2, ... 11-n, the top material 51, side material 52, and end material 53 of the protective sheet 5 prevent the scattering of demolition materials above building 10, to the outside of building 10 in the width direction, and to the front and back in the demolition direction of building 10. In addition, during the demolition of building 10 in demolition areas 11-1, 11-2, ... 11-n, the side material 52 can be supported by the wire material 4 to prevent the side material 52 from flapping due to wind, etc.

[0038] However, the present invention is not limited to the embodiments described above. For example, the building 10 to be demolished is not limited to one with steel-framed columns and beams, but may also be made of reinforced concrete or steel-reinforced concrete. The roof is also not limited to a concrete slab. For example, if the roof is a steel plate roof (folded plate roof), as shown in Figure 5, support members 14 can be raised from the support beams 13 of the steel plate roof 12, and the rails 2 can be supported by the support members 14. At the locations where the support members 14 are to be installed, the steel plate roof 12 is partially removed to create openings 121 for installing the support members 14.

[0039] In this embodiment, the roof of building 10 is flat, but if there is a difference in level on the roof of building 10, a support frame 15 may be provided on building 10 to compensate for the difference in level, as shown in Figure 6, and the rails 2 may be placed on the support frame 15.

[0040] Figure 6 shows an example where there is a level difference in the demolition direction of building 10, but it is also possible that there is a level difference in the width direction of building 10, and the heights of the pair of rails 2 are different, as shown in Figure 7. In this case, the movement of the mobile platform 3 itself can be carried out without any particular problems, so the protective sheet 5 should be shaped and arranged according to the level difference.

[0041] Furthermore, the composition, shape, and dimensions of the protective sheet 5 are not particularly limited and can be determined in various ways for the purpose of preventing the scattering of demolition materials. For example, the protective sheet 5 only needs to have a top material 51 that covers at least the demolition areas 11-1, 11-2, ..., 11-n, and the side materials 52 and end materials 53 may be omitted depending on the circumstances. For example, depending on the method of demolishing the building 10, it is conceivable to provide a side material 52 only on one side in the width direction of the building 10 so as to cover only one side of the building 10.

[0042] In this embodiment, the mobile platform 3 is self-propelled by a motor, but the mobile platform 3 may also be moved manually or using a traction device such as a Tirfor. In addition, to prevent the center of gravity of the mobile platform 3 from being too close to the starting end in the demolition direction due to the arm portion 32, a weight may be provided on the running portion 31 of the mobile platform 3. Furthermore, depending on the width of the building 10, it is also possible to provide three or more mobile platforms 3 in the width direction of the building 10, and configure each mobile platform 3 to move along the rail 2 in the demolition direction.

[0043] In this embodiment, when the building 10 is demolished, the rails 2 are rearranged to extend them to the end of the demolition direction. However, it is also possible to first install the necessary amount of rails 2 from the beginning to the end of the demolition direction, and then sequentially remove the rails 2 from the beginning as the demolition progresses. In this case, rearranging the rails 2 is unnecessary, but the number of rails 2 required increases.

[0044] Preferred embodiments of the present invention have been described above with reference to the attached drawings, but the present invention is not limited to these examples. It will be obvious to those skilled in the art that various modifications or alterations can be conceived within the scope of the technical idea disclosed herein, and these will naturally also fall within the technical scope of the present invention. [Explanation of Symbols]

[0045] 1:Curing device 2: Rail 3: Mobile stand 4: Wire rod 5: Protective sheet 10: Buildings 11-1, 11-2, 11-n: Demolition area 31: Running gear 32: Arm section 33: Wire 51:Top material 52: Side material 53: Edge material

Claims

1. On the roof of the building, a pair of rails extending in the direction of demolition of the building are arranged at intervals in a direction perpendicular to the direction of demolition of the building in a plan view, A movable frame having a running section that travels on the rails and an arm section that extends from the running section toward the starting end in the dismantling direction, provided for each of the pair of rails, A protective sheet is placed across the arms of the aforementioned mobile frame, Using a curing device equipped with the following, A demolition method characterized by repeatedly moving the mobile frame from the starting end to the ending end in the demolition direction while demolishing the demolition area of ​​the building located below the protective sheet.

2. After moving the aforementioned mobile frame along the demolition direction, and before demolishing the demolition area, The demolition method according to claim 1, characterized in that the starting end of the rail, which is located on the roof of the demolition area of ​​the building, is removed and attached to the ending end of the rail, thereby extending the rail toward the terminal end.

3. The demolition method according to claim 1, characterized in that the protective sheet is supported by a wire stretched between the arm portions.

4. The protective sheet comprises a top material positioned between the arm portions and side materials that are continuous with the top material and positioned to cover the sides along the demolition direction of the building. The demolition method according to claim 1, characterized in that the side material is supported by being pulled from below by a wire while the demolition area is being demolished.

5. A protective device used when demolishing a building, On the roof of the aforementioned building, a pair of rails extending in the direction of demolition of the building are arranged at intervals in a direction perpendicular to the direction of demolition of the building in a plan view, A movable frame having a running section that travels on the rails and an arm section that extends from the running section toward the starting end in the dismantling direction, provided for each of the pair of rails, A protective sheet is placed across the arms of the aforementioned mobile frame, A curing device characterized by being equipped with the following.

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