Repair work method and repair work facility

Abstract

To provide a repair work method that improves the work efficiency of repair work in a multi-story building and takes measures to prevent construction materials from scattering.SOLUTION: Provided is a repair work method for a multi-story building having a balcony B, including the steps of providing a temporary lifting device 1 having a lifting body 11 for transporting materials and workers on the outside of the building, covering the part of the balcony B that is open to the surroundings of the building with a shatterproof sheet 2, and providing a fall arrest device hook 3 on the inside of the balcony B to which a fall arrest device worn by a worker can be hung. The temporary lifting device 1 is not limited to being stopped continuously at the floor where the repair work is in progress, but is moved within a preset work area including a plurality of floors during the time period when the repair work is in progress, and is raised and lowered so as to selectively stop at floors within the work area.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a repair work method and repair work equipment for multi-story buildings. [Background technology]

[0002] In a multi-story building (e.g., a high-rise apartment building), repair work is sometimes carried out to address the aging deterioration of various parts. At this time, as part of the work, a gondola device (for example, as described in Patent Document 1) is installed as a temporary lifting device for transporting materials and workers.

[0003] Conventionally, when repair work was carried out on a balcony of a building, a stepladder, for example, was installed on the balcony, and workers climbed up the stepladder to carry out the repair work. In this case, in order to prevent workers from falling off the balcony, it was necessary to keep a gondola parked outside the balcony during the work. This resulted in poor work efficiency. In addition, when working on a high-rise floor, measures to prevent construction materials from scattering were also necessary. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2003-268968 A Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, an object of the present invention is to provide a repair work method and repair work equipment that can improve the work efficiency of repair work in multi-story buildings and that can take measures to prevent construction materials, etc. from scattering. [Means for solving the problem]

[0006] The present invention is a repair work method for a multi-story building having a balcony, comprising the steps of: providing, outside the building, a temporary lifting device having a lifting body for transporting materials and workers as part of the work; covering, on the outside of the building, the portion of the balcony that is open to the surrounding area of ​​the building with a shatterproof sheet; and installing, on the inside of the balcony, a fall arrest device hook onto which a fall arrest device worn by a worker can be hung. This repair work method is not limited to stopping the lifting body continuously at the floor where the repair work is in progress, but rather moves the lifting body within a predetermined work area including a plurality of floors during the time period when the repair work is in progress, and raises and lowers the lifting body so as to selectively stop on floors within the work area.

[0007] The present invention also relates to a repair work equipment that is installed when carrying out repair work on a multi-story building that has a balcony, the repair work equipment comprising: a temporary lifting device having a lifting body outside the building for transporting materials and workers as part of the work, a shatterproof sheet that covers the part of the balcony that is open to the surrounding area of ​​the building, and a fall arrest device hook portion that is provided inside the balcony and onto which fall arrest devices worn by workers can be hung.

[0008] With these configurations, the fall prevention device hooks can prevent workers from falling, so from the perspective of fall prevention, it is not necessary to keep the lifting body stopped outside the balcony where the work is being done, and the lifting body can be raised and lowered appropriately within the work area, improving work efficiency. In addition, the anti-scattering sheet can be used as a measure to prevent scattering.

[0009] The shatterproof sheet may be a mesh-like sheet having an opening in the thickness direction that can be opened and closed to allow workers to pass through, and the opening may be configured to be freely opened and closed by a zipper.

[0010] This configuration allows easy access for materials and personnel to the balcony.

[0011] In addition, the fall arrest device hooking portion may include a support portion fixed to the building, and a long body supported by the support portion and arranged along the width direction of the open portion of the balcony.

[0012] With this configuration, workers wearing fall protection equipment can move along the elongated body, thereby increasing the range of movement of workers working inside the balcony.

[0013] The building may further comprise a plurality of rooms on the same floor, the balconies of each of the plurality of rooms being connected via a partition board, and the process may include temporarily removing the partition board and replacing it with a temporary partition having an opening and closing section that allows workers to move between the balconies of each of the adjacent rooms.

[0014] With this configuration, workers can freely move between balconies spanning multiple rooms by passing through the open opening of the temporary partition.

[0015] In addition, after repairs to the inside of the balcony have been completed, the method can include a process of removing the shatterproof sheet and using the temporary lifting device to repair the portion of the building that is exposed to the outside as a result of the shatterproof sheet being removed.

[0016] This configuration allows for a smooth transition to repairs on the exterior of the building.

[0017] In addition, a first lifting configuration can be provided in which a plurality of the temporary lifting devices are provided, or a second lifting configuration can be provided in which the temporary lifting devices have a plurality of the lifting bodies that rise and fall on separate tracks, and in the first lifting configuration, the plurality of temporary lifting devices can be used for repairs of different types of work, and in the second lifting configuration, the plurality of the lifting bodies can be used for repairs of different types of work.

[0018] This configuration allows repairs of different types to be carried out simultaneously. Effect of the Invention

[0019] According to the present invention, it is possible to improve work efficiency and also take measures to prevent construction materials and the like from scattering. [Brief description of the drawings]

[0020] [Figure 1] This is a schematic diagram showing the installation status of a temporary lifting device in an apartment building that is the target of construction work, in relation to a repair work method and repair work equipment according to one embodiment of the present invention, where (A) is a front view, (B) is a right side view, (C) is a rear view, and (D) is a left side view. [Diagram 2] This is a schematic diagram showing an example of the installation of a shatterproof sheet and a hook for fall prevention equipment in relation to the repair work method and equipment, as viewed from outside the balcony. [Diagram 3] 3 is an enlarged view of a portion of the shatterproof sheet having an entrance in FIG. 2. FIG. [Figure 4] This is a schematic diagram showing an example of the installation of a shatterproof sheet (part) and a hook for fall prevention equipment in relation to the repair work method and repair work equipment, as viewed from inside the balcony. [Diagram 5] Regarding the repair work method and equipment, this is a schematic diagram showing a state in which the entrance and exit of the anti-scattering sheet has been opened and a worker is about to move from the balcony to the lifting body of the temporary lifting device via the lifting equipment and stepladder. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The present invention will be described below with reference to an embodiment and drawings. As this embodiment, a repair construction method for a multi-story building C will be described. "Multi-story" specifically means two or more floors, but this embodiment is preferably used for a super-high-rise building. "Super-high-rise" is defined as having 20 or more floors or being 60 m or higher above ground. The target building C is a building having a balcony B, such as an apartment building. This building has multiple rooms on the same floor, and the balconies B of each of the multiple rooms are connected together via removable partitions.

[0022] Building C suitable for implementing this construction method is either a corridor type (a type in which a corridor or balcony B is arranged around the perimeter of building C) or a non-corridor type, in which the boundary between units (the boundary between adjacent sections (residences, etc.)) is separated by a partition, and the partition (partition board) between the units can be removed.

[0023] In this method, before the actual repair work (the work of carrying out processing, etc., for the purpose of repair, on building C) begins, the temporary lifting device installation process, partition board replacement process, shatterproof sheet installation process, and fall prevention device hook installation process are carried out. The order in which each process is carried out is not particularly limited, and the order of these processes can be reversed as needed. However, in the case of repair work, since it is impossible for workers to enter the rooms of each unit, materials must be brought in and workers must board balcony B from outside balcony B. For this reason, it is preferable to carry out the temporary lifting device installation process first. Then, in order to enable workers to move along the balconies B of each unit, it is preferable to carry out the partition board replacement process as the next process.

[0024] In the temporary lifting device installation process, as shown in Fig. 1(A) to (D), a temporary lifting device 1 for transporting materials and workers is provided outside the building C. In Fig. 1, the temporary lifting device 1 is provided on all four sides of the building C, but the outer side of the building C on which the temporary lifting device 1 is provided can be set as appropriate. When viewed from each residence, the temporary lifting device 1 is provided on the back side of the balcony B (the opposite side to the living room). The temporary lifting device 1 is a device configured so that a lifting body 11 (a part having a platform on which materials and workers can be loaded) capable of carrying materials and workers can move at least up and down along the building C and stop at each floor. The lifting body 11 can be exemplified by a gondola 111 or a lift climber 112 in which the dimension of the lifting body 11 in the direction along the building C is larger than that of the gondola 111, but various other devices may be used. Furthermore, when repairing a super-high rise building C, it is preferable that the lifting body 11 is configured to rise and fall along rails installed vertically along the building C, but in some cases (or partially), the lifting body 11 can also be supported by wires. A temporary lifting device 1 that allows the lifting body 11 to rise and fall and also move horizontally may be provided. In this embodiment, the gondola 111 is set to rise and fall on the fourth floor or higher, and general-purpose steel scaffolding is set up outside the building C below the portion where the gondola 111 is installed and on the third floor or lower. The floor on which the temporary lifting device 1 is installed can be set as appropriate.

[0025] In the partition board replacement process, the partition board that is installed between the balconies B, B of adjacent rooms and that normally separates the balconies B, B so that they cannot pass each other is temporarily removed and replaced with a temporary partition that has an opening and closing section that allows workers to move between the balconies B, B. Although not shown in the figure, the temporary partition is, for example, a sheet-like material that has an openable and closeable zipper. By carrying out the partition board replacement process, workers can pass through the open opening and closing section of the temporary partition and freely move between the balconies B~B that span multiple rooms, so repair work in each unit can be carried out in parallel.

[0026] In the shatterproof sheet installation process, as shown in FIG. 2, the back side of the balcony B, which is open to the surrounding space of the building C (for example, the part facing the handrail H of the balcony B), is covered with the shatterproof sheet 2 in a direction along the outer surface of the building C (for example, vertically). The outer surface of the building C including the balcony B is covered with the shatterproof sheet 2. By covering with the shatterproof sheet 2, construction materials, tools, etc. can be prevented from scattering and falling outside the balcony B even if wind gets into the balcony B or a worker's hand slips. The shatterproof sheet 2 is, for example, a mesh-like sheet. By making it mesh-like, wind can pass through and flapping of the shatterproof sheet 2 can be suppressed. In addition, since the mesh-like sheet does not completely block light rays, discomfort caused to residents in the room can be reduced. The shatterproof sheet 2 has an entrance 21 that can be opened and closed in the sheet thickness direction so that workers can pass through. This entrance 21 is configured to be freely opened and closed by a zipper 22. Note that, other than a zipper, a means for opening and closing the opening of the entrance 21, such as a button, a snap, or a hook-and-loop fastener, may be used. However, from the viewpoints of ease of opening and closing and wind resistance (hard to open unexpectedly due to wind), it is preferable to use a zipper. Also, from the viewpoint of ease of operation, it is preferable to provide handles for the zipper 22 on both the front and back sides of the shatterproof sheet 2. The shatterproof sheet 2 having such an entrance 21 allows materials and workers to easily enter and exit the balcony B as part of the work. The entrance 21 is provided facing the area through which the lifting body 11 of the temporary lifting device 1 passes (the movement trajectory of the lifting body 11). In the case where a plurality of temporary lifting devices 1 are provided (corresponding to the "first lifting configuration" described later), or in the case where a plurality of lifting bodies 11 are provided per temporary lifting device 1 (each lifting body 11 moves up and down a separate track) (corresponding to the "second lifting configuration" described later), the entrance / exit 21 is provided facing the area (movement track) through which each lifting body 11 passes. In addition, in the area through which the lifting bodies 11 of the temporary lifting devices 1 do not pass and which is not related to the entrance / exit of materials and workers, a shatterproof sheet 2B without an entrance / exit 21 is used. In other words, a sheet 2A with an entrance / exit 21 and a sheet 2B without an entrance / exit 21 can be used together and arranged in parallel.In particular, shatterproof sheets 2B without entrances 21 can be installed across multiple floors as shown in Fig. 2. Note that Fig. 2 shows a state in which sheets 2A with entrances 21 are arranged to cover the balconies B of each floor, and shatterproof sheets 2B without entrances 21 are arranged to cover multiple floors (two floors in the figure) with one sheet, but the arrangement of sheets 2A and 2B on the balconies B of each floor can be flexibly changed depending on the situation on-site.

[0027] The zipper 22 provided at the entrance 21 can be formed in a U-shape (or a sideways U-shape) in plan view, for example, as shown in Fig. 3, which is composed of horizontal parts 221 that are spaced apart from each other at the top and bottom, and a vertical part 222 that connects one end of the horizontal parts 221 and extends in the up-down direction. However, when the zipper 22 is formed in the U-shape, the lower horizontal part 221 may be located considerably below the handrail H, in which case the entrance 21 may not be able to be opened completely. To solve this problem, for example, it is conceivable to form the zipper 22 in an inverted U-shape in plan view, with the lower end at approximately the same height as the handrail H of the balcony B (the installation position of the entrance 21 may be adjusted in this way in the shatterproof sheet installation process).

[0028] In the fall prevention device hook installation process, a fall prevention device hook 3 is installed inside the balcony B to which a fall prevention device worn by a worker (specifically, a full harness-type fall prevention device, formerly known as a "safety belt") can be hung. The fall prevention device hook 3 includes a support part 31 fixed to the building C and a long body 32 supported by the support part 31 and provided along the width direction (left and right direction when viewed from the living room side) of the open part of the balcony B. With this configuration, the worker can move along the long body 32 with the hook of the fall prevention device hung on the long body 32. This allows the movement range of the worker working inside the balcony B to be increased. The support part 31 is, for example, an eye bolt embedded in the framework of the building C at the upper part inside the balcony B. The eye bolt is provided in at least two places. The eye bolts are provided, for example, at intervals of 2 m so that the long body 32 can adequately support the fall prevention device. The long body 32 is, for example, a coated wire or a rope. In addition, in order to provide the long body 32 with an appropriate tension to support the hanging fall prevention device, a turnbuckle 33 is provided between the support part 31 and the long body 32, or between the long bodies 32, 32 when two or more long bodies 32 are provided. After the repair work is completed, a hole remains in the part where the support part 31 (eye bolt) was provided. To deal with this hole, for example, a rust-resistant bolt made of stainless steel or the like can be attached to the hole, or a resin cap can be attached to the hole. The hole can also be filled with mortar or the like and then painted.

[0029] By going through each of the above steps, a repair work facility is constructed on the outside of a multi-story building C which has a balcony B, the facility comprising a temporary lifting device 1 having a lifting body 11 for transporting materials and workers as part of the work, a shatterproof sheet 2 which covers the part of the balcony B which is open to the surrounding area of ​​the building C, and a fall arrest device hook 3 which is provided on the inside of the balcony B and on which fall arrest devices worn by workers can be hung.

[0030] The repair work equipment thus configured is used to carry out actual work in the repair work. Examples of the work include foundation repair, sealing, cleaning, painting, and waterproofing, but also include various other work that falls under the category of repair, such as updating handrails and clothesline poles. First, repair the interior of the balcony B. In the past, in order to prevent workers from falling outside the balcony B, it was necessary to continuously stop the temporary lifting device 1 at the floor where the repair work was in progress. In particular, a stepladder is used on the balcony B, and there are cases where the worker works at a position higher than the floor surface of the balcony B and higher than the handrail H, so there is a possibility that the worker will fall. In contrast, in this embodiment, a fall prevention device hook 3 is provided on the inside of the balcony B, and measures to prevent falls are taken. For this reason, when carrying out the method of this embodiment, it is not limited to continuously stopping the lifting body 11 of the temporary lifting device 1 at the floor where the repair work is in progress. Therefore, the lifting body 11 can be moved within a pre-set work area including multiple floors during the time period when the repair work is in progress, and can be raised and lowered so as to selectively (arbitrarily) stop at floors within the work area without any problems. The work area can be set appropriately according to the structure of the building C, the details of the repair work, and the overlapping construction plan. The stopping floors of the lifting body 11 can be set appropriately according to the need for the movement of materials and workers during the progress of the repair work.

[0031] In the construction method of this embodiment, from the viewpoint of preventing falls, it is not necessary to keep the temporary lifting device 1 continuously parked outside the balcony B where the work is being performed, and the temporary lifting device 1 can be raised and lowered appropriately within the work area, thereby improving work efficiency. In addition, the scattering prevention sheet 2 can also be used as a measure to prevent materials, tools, etc. from scattering.

[0032] After the repairs to the inside of balcony B are completed, an inspection is carried out, and if there are no problems, the partition board is restored. Then, a process of removing the shatterproof sheet 2 and a process of repairing the part (facing part) of building C that is exposed to the outside due to the removal of the shatterproof sheet 2 are carried out using the temporary lifting device 1. This process allows a smooth transition to repairs to the outside of building C. Note that the order of restoring the partition board and removing the shatterproof sheet 2 may be reversed.

[0033] After the repairs to the exterior of building C are completed, an inspection is carried out, and if there are no problems, the temporary lifting device 1 is removed and all construction work is completed.

[0034] Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the gist of the present invention.

[0035] For example, the shatterproof sheet 2 is not limited to a mesh-like one, and various sheet-like bodies can be used. Also, it is possible to use only the shatterproof sheet 2B without the entrance / exit 21. In this case, people can enter and exit through the boundary between the two adjacent shatterproof sheets 2B, 2B.

[0036] In addition, the temporary lifting device 1 can be configured as a first lifting configuration in which a plurality of temporary lifting devices 1 that can stop at the same floor are provided, or a second lifting configuration in which a temporary lifting device 1 having a plurality of lifting bodies 11-11 that ascend and descend on separate tracks is provided. With these configurations, in the first lifting configuration, a plurality of temporary lifting devices 1 can be used for repairs of different types of work, and in the second lifting configuration, a plurality of the lifting bodies can be used for repairs of different types of work. Therefore, by adopting these configurations, repairs of different types of work can be performed simultaneously in parallel, and the construction period can be shortened (for example, 25 to 40% shortened according to the inventor's calculations). In addition, the period for which the temporary lifting device 1 is installed can be shortened, and the cost of the temporary facilities can be reduced by the shortened period. [Explanation of symbols]

[0037] 1 Temporary lifting device 11 Lifting body 111 Gondola 112 Lift Climber 2 Shatterproof sheet 2A Anti-scattering sheet (with entrance / exit) 2B Shatterproof sheet (no entrance / exit) 21 Entrance / Exit 22 Zipper 3 Fall prevention device hook 31 Support part (eye bolt) 32 Long body C Building B Balcony H Handrail

Claims

1. A repair construction method for a multi-story building having a balcony, comprising: providing a temporary lifting device having a lifting body for transporting materials and workers as part of the work outside the building; covering a portion of the balcony that is open to the surroundings of the building with a shatterproof sheet; and installing a fall arrest device hook on the inside of the balcony to which a fall arrest device worn by a worker can be hung. A repair work method in which the lifting body is not limited to being stopped continuously at the floor where the repair work is in progress, but is moved within a pre-set work area including a plurality of floors during the period when the repair work is in progress, and is raised and lowered so as to selectively stop at floors within the work area.

2. The shatterproof sheet is a mesh-like sheet having an opening in the thickness direction that can be opened and closed to allow a worker to pass through, The repair construction method according to claim 1 , wherein the entrance is configured to be freely opened and closed by a zipper.

3. The fall prevention device hook portion has a support portion fixed to the building, The repair work method described in claim 1, further comprising: a long body supported by the support portion and arranged along the width direction of the open portion of the balcony.

4. The building has multiple rooms on the same floor, The balconies of each of the plurality of rooms are connected to each other via a partition plate, The repair construction method according to any one of claims 1 to 3, further comprising a step of temporarily removing the partition plate and replacing it with a temporary partition having an opening and closing section that allows workers to move between the balconies of the adjacent rooms.

5. removing the shatterproof sheet after repairs to the interior of the balcony are completed; The repair construction method according to any one of claims 1 to 3, further comprising a step of repairing the portion of the building exposed to the outside due to the removal of the shatterproof sheet using the temporary lifting device.

6. A first lifting configuration is provided with a plurality of the temporary lifting devices, or a second lifting configuration is provided with the temporary lifting device having a plurality of the lifting bodies that rise and fall on separate tracks, In the first lifting configuration, a plurality of the temporary lifting devices are used for repairs of different types of work, The repair work method according to any one of claims 1 to 3, wherein in the second lifting configuration, a plurality of the lifting bodies are used for repairs of different types of work.

7. A repair work facility installed when carrying out repair work on a multi-story building having a balcony, A temporary lifting device for transporting materials and workers to the outside of the building as part of the work; A shatterproof sheet covering a portion of the balcony that is open to the surroundings of the building; The repair work equipment is provided with a fall prevention device hook portion that is provided on the inside of the balcony and on which fall prevention devices worn by workers can be hung.

Images