JPH10169209A - Repair method for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make repair of a building without impairing the natural ilumination in the building, appearance, etc., maintain the dwellability as much as practicable, and minimize materials to be used in erecting the scaffold, preventing intrusion of rainwater etc., into the building, and so on. SOLUTION: A gondola device 20 is supported at the outer side face 11 of a building through a suspension crane in such a way as capable of moving along the side face and being located in the desired place. The gondola device 20 is located with respect to an exterior curtain wall 10 to be dismantled, and the curtain wall 10 is removed using the device 20 as scaffold while the outside of the curtain wall 10 is enclosed against the water willing to intrude.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for renovating a building, which is suitable for use in an office building or the like when performing renovation work such as seismic reinforcement of an outer pillar or replacement of an exterior curtain wall.

[0002]

2. Description of the Related Art Conventionally, in office buildings and the like, renovation works such as seismic reinforcement of outer peripheral columns and the like and replacement of exterior curtain walls have been performed. Specifically, first, an assembling scaffold is assembled and installed around the building, and the existing curtain wall is removed and replaced with a new curtain wall through the assembling scaffold, or a space near the curtain wall is used (sometimes, curtains are used). The seismic reinforcement work of the outer peripheral pillars and the like has been performed (using the assembled scaffolding around the building) via the curtain wall mounting portion which has been removed and opened to the outside. Also, during this work, the mounting part after removing the curtain wall is opened to the outside of the building, and measures are taken to prevent rainwater and the like from entering the floor space from this mounting part. Was. That is, the assembling scaffold adjacent to the mounting portion (specifically, by a sheet material or the like provided in the assembling scaffold) prevents entry of rainwater or the like.

[0003]

However, according to the above-mentioned method, since the assembling scaffold is erected from the ground side around the building, not only the place where the work such as the removal of the curtain wall is proceeding but also the work is not performed. The scaffolding must be left in place where no work is done. As a result, windows and the like at locations where the work is not performed are covered with the assembling scaffolds (particularly with sheet materials provided on the assembling scaffolds), and obstructing lighting and scenery, thereby deteriorating livability. In addition, an assembled scaffold must be provided around the building, and a large amount of material is required to construct the assembled scaffold, which is inconvenient (for example, the amount of sheet materials provided in the assembled scaffold becomes large). ).

In view of the above, the present invention has been made in consideration of the above circumstances, and in repairing a building, it is possible to maintain the lighting and the scenery in the building as much as possible, maintain the habitability as much as possible, construct a scaffold, prevent rainwater, etc. from entering the building. It is an object of the present invention to provide a method for renovating a building in which materials for the building can be minimized.

[0005]

That is, according to a first aspect of the present invention, there is provided a building (1) having a plurality of exterior curtain walls (10) in the form of an outer surface (11).
When renovating the building (1) by removing the exterior curtain wall (10), the building (1) is attached to the building (1) along the outer side surface (11) via predetermined elevating support means (15). A gondola scaffold (20) supported so as to be movable and positionable is installed, and the gondola scaffold (20) is installed.
Is positioned and arranged with respect to the exterior curtain wall (10) to be removed, and the gondola scaffold (20) covers the outside of the exterior curtain wall (10) to be removed with the gondola scaffold (20). The exterior curtain wall (10) is configured to be detached using the as a scaffold.

According to a second aspect of the present invention, in the method for repairing a building according to the first aspect, the building (1) has a floor space (partially separated from the outside by the exterior curtain wall (10)). 7) is formed, and before the exterior curtain wall (10) is removed, a work area (SK1 to SK) is formed in the floor space (7) adjacent to the exterior curtain wall (10) to be removed.
n), and the work areas (SK1 to SKn) and the work areas (SK1 to SKn) are set in the floor space (7).
A temporary partitioning member (40) that partitions the area other than Kn) is provided.

According to a third aspect of the present invention, in the method for renovating a building according to the first aspect, the renovation of the building (1) includes the step of attaching the gondola scaffold (20) to the outer side surface (11).
In such a manner as to be sequentially moved in the vertical and horizontal directions.

According to a fourth aspect of the present invention, in the method for repairing a building according to the first aspect, a sub-gondola (32) is provided on the gondola scaffold (20), and a sub-gondola (32) is provided in the vertical direction with respect to the gondola scaffold (20). The gondola scaffold (20) is provided so as to be freely movable and stopped.

Note that the numbers in parentheses are for convenience of indicating corresponding elements in the drawings, and therefore the present description is not limited to the description on the drawings. The same applies to the following operation columns.

[0010]

According to the first aspect of the present invention having the above-described structure, the gondola scaffold (20) is installed and arranged as a scaffold for a place where the exterior curtain wall (10) is removed. And the penetration of rainwater or the like into the attachment portion of the exterior curtain wall (10) is prevented by the gondola scaffold (20).

According to a second aspect of the present invention, in the floor space (7), the influence of the work in the work area (SK1 to SKn) on the area other than the work area (SK1 to SKn) is determined by the provisional partition member. (40) makes it possible to reach as little as possible.

According to a third aspect of the present invention, a large number of symmetrical portions are not generated at a time, and only one or a small number of symmetrical portions are operated at a time. Move sequentially to the construction symmetrical point.

According to a fourth aspect of the present invention, when a worker goes on and off (or loads and unloads materials) on the gondola scaffold (20), the sub gondola (32) is moved up and down and stopped. The sub-gondola (3
Workers get on and off (or load and unload materials) between 2) and the ground or between the sub gondola (32) and the building (1), and move the sub gondola (32) up and down. By stopping the gondola scaffold (20), the sub gondola (32) and the gondola scaffold (2) are stopped.
The worker gets on and off (or loads and unloads materials) during 0).

[0014]

FIG. 1 is a front view showing an office building undergoing renovation according to a building renovation method according to the present invention, FIG. 2 is a cross-sectional view taken along the line X1-Y1 of FIG. 1, and FIG. X2
FIG. 4 is a horizontal cross-sectional view of the gondola device and the like shown in FIG. 1, and FIGS. 5 and 6 are views showing one process of the repair work.

As shown in FIGS. 1 to 3, the office building 1 has a plurality of pillars 3 erected on an unillustrated substructure constructed on the ground 2 and a plurality of pillars 3 supported by the pillars 3. The pillar 3 and the beam 5 are provided with a plurality of horizontal slabs 6 in a plurality of layers. A floor space 7 in which an office room or the like is installed is formed between the vertically adjacent slabs 6, 6, and each floor space 7 (in FIG. 1, three or more floor spaces 7 in FIG. 1) is provided. ,
The opening 9 is located at the edge 6 a of each slab 6.
However, the floor space 7 and the outside of the office building 1 are formed so as to communicate in the horizontal direction. And each opening 9
In the form, a plurality of curtain walls 10 are joined to the edge 6 a of each slab 6 so as to close the opening 9,
It is installed as an exterior of the office building 1 and thus forms the outer surface 11 of the office building 1. Note that some of the plurality of pillars 3 described above are arranged side by side near the opening 9 of each floor space 7, and the pillar 3 near the opening 9 is distinguished from the other pillars 3. It will be referred to as the outer peripheral column 3A.

In the office building 1 configured as described above, the replacement work of the curtain wall 10 and the outer pillar 3A
A renovation work such as a seismic reinforcement work is underway, and a gondola device 20 is installed to perform the renovation work. As shown in FIGS. 1 to 4, the gondola device 20 includes a frame 21 suspended by a plurality of hanging cranes 15 installed on a roof 1 a or the like of the office building 1 via a plurality of wires 16 so as to be able to move up and down. For example, the frame 21 suspended by the hanging cranes 15 is disposed adjacent to the curtain wall 10 of the office building 1 and thus along the outer side surface 11 of the office building 1. . The vertical length of the frame 21 is the length of the office building 1.
(That is, the gondola device 20 is a multi-layer gondola), and the frames 21 are therefore arranged over a plurality of floors. For example, as shown in FIG. 3, the floors are arranged over one floor, one floor below and one floor above, and thus over a total of three floors. Also,
The frame 21 is provided with a plurality of (three in the figure) layered scaffold members 22 having a horizontal foot scene 22a formed on the upper surface.

The frame 21 is in a horizontal direction along the outer side surface 11 of the office building 1, FIGS. 1, 2 and 4.
It is also movable in the directions of arrows A and B shown by the arrows. This is realized by, for example, laying a rail (not shown) on the roof 1a along the outer periphery of the office building 1, and making the plurality of hanging cranes 15 movable along the rail. (That is, the configuration is similar to that of a hanging crane for a cleaning gondola found in a high-rise building or the like.) As another embodiment, the vertical direction and the horizontal direction (that is, the directions of arrows A and B) are provided on the outer surface 11 of the office building 1.
A moving rail (not shown) extended to
The frame 21 of the gondola device 20 may be moved along the moving rail.

Further, at the upper end 21a of the frame 21,
One of the plate surfaces 23a on which the water-stopping material 23 (for example, formed of rubber, a waterproof sheet, or a foam material) having an L-shaped cross section extending in the directions of the arrows A and B is disposed substantially vertically, The curtain wall 10 is in contact with the side surface 11, so that the frame 21 is adjacent to the curtain wall 10 (that is, the curtain wall 1 of the uppermost floor of the three floors on which the frame 21 is disposed).
0) is provided in contact with the outer surface of
On the lower end 21b of the first member 21, another waterproof material 25 (for example, formed of rubber or a waterproof sheet or a foam material) having an L-shaped cross section extending in the directions of arrows A and B is disposed substantially vertically. One of the plate surfaces 25a is in contact with the outer surface 11, so that the frame 21 is adjacent to the curtain wall 10 adjacent thereto.
(That is, it is provided so as to be in contact with the outer surface of the curtain wall 10 of the lowest floor among the three floors on which the frame 21 is arranged). Therefore, the upper end 21a of the frame 21 and the curtain wall 1 are
Leakage of rainwater or the like during 0 or between the lower end 21b and the curtain wall 10 is prevented.

On the other hand, the frame 21
A wall-shaped water-stop plate 26 extending in a substantially vertical direction is provided so as to surround three sides other than the upper and lower sides and the side adjacent to the outer side surface 11. Also, on the side of the gondola device 20 (the arrow A side in the figure), as shown in FIGS.
A small gondola 32 is installed by a hanging crane 30 installed on the roof 1a or the like of the office building 1 so as to be able to move up and down and stop freely via a wire 31. It is free to board. Further, by positioning and stopping the small gondola 32 to the side of the gondola device 20, the small gondola 32 and the gondola device 20 can be freely communicated with each other, that is, the worker can freely move (for example, gondola). The device 20 is shown in FIG.
As shown in the figure, on the side of the arrow A side, there is an openable and closable door 26a provided on the water stop plate 26, and the small gondola 32 is opened and closed on the side of the arrow B side. It has a free door 32a in a form corresponding to the door 26a. ).

Since the office building 1, the gondola device 20 and the like are configured as described above, the gondola device 20
When the renovation work of the office building 1, for example, the work of replacing the curtain wall 10 and the seismic reinforcement of the outer peripheral pillar 3 </ b> A, is performed as follows. First, in the floor space 7 of each floor, as shown in FIG. 2, a band-shaped floor work area SR extending along the curtain wall 10 and thus extending in the directions of the arrows A and B is set. A plurality of construction sections SK1 to SK arranged in a line in the directions indicated by arrows A and B, which are the directions in which the floor work section SR extends, are arranged in the section SR.
Kn (n is an integer) is divided and set to form a plurality.
Then, the above-mentioned renovation work is performed in the construction zone SK1 on a predetermined floor.
Will be described.

First, as shown in FIGS. 2 and 3, a temporary partitioning material 40 is installed in the construction section SK1 on the floor where the work is to be performed, so as to separate the construction section SK1 from other areas in the floor space 7. I do. As a result, the construction section SK1 was surrounded by the temporary partitioning material 40 and the curtain wall 10. Next, the air conditioner 41 (shown by a two-dot chain line in FIG. 3) and the like arranged near the curtain wall 10 in the construction section SK1 are disposed outside the construction section SK1 as shown by a solid line in FIG. It is moved to the vicinity of a certain temporary partition member 40. Thus, in this floor space 7, the construction zone S
The layout of the office room is shifted by K1. In other words, the layout of the office room only needs to be shifted by the construction area SK1, so that it is not necessary to vacate the entire floor for repair work. Thereby, a favorable environment can be maintained without substantially affecting the work in the office room.

Further, as shown by a two-dot chain line in FIG. 3, in the construction section SK1, the exterior material 43 covering each outer pillar 3A and the pipe space 45 installed on the side of each outer pillar 3A. Exterior material 43 that covers the construction zone SK1
The exterior material 43 covering the duct space 46 installed on the ceiling side inside is removed. On the other hand, the frame 21 of the gondola device 20 is moved up and down by the plurality of hanging cranes 15 on the roof 1a, or the hanging cranes 15 are moved in the directions of arrows A and B along the outer side surface 11 of the office building 1. The frame 21 is moved by the
It is arranged in a form corresponding to K1. As a result, the frame 21
As shown in FIG. 3, is placed over the floor including the construction section SK1 and the floors above and below it.

Next, replacement of the curtain wall 10 and seismic reinforcement of the outer peripheral column 3A are performed. In other words, when replacing the curtain wall 10, first, the junction between the existing curtain wall 10 and the edge 6a of the slab 6 is released from the inside of the construction section SK1, and the curtain wall 10 is taken in from the gondola device 20 side. Then, as shown in FIG. 5, the curtain wall 10 is removed (the removed curtain wall 10 may be carried out by a separate crane or the like, not shown). Next, the new curtain wall 10 prepared in the gondola device 20 is joined to the edge 6a of the slab 6, and the like. In addition, as shown in FIG. 5, the seismic reinforcement of the outer pillar 3A is performed by temporarily removing the pipes 47 and the like in the pipe space 45 and the duct space 46 as shown in FIG. Thereafter, as shown in FIG. 6, the pipe space 45 and the pipe 47 in the duct space 46 are installed again. The above-described replacement of the curtain wall 10 is performed using the foot scene 22a or the like of the gondola device 20 as a scaffold. When the seismic reinforcement of the outer peripheral column 3A is performed, the inside of the gondola device 20 is used as a work space. Is also good.

During the replacement of the curtain wall 10 (further, when the seismic reinforcement of the outer pillar 3A is performed with the existing curtain wall 10 removed, the seismic reinforcement of the outer pillar 3A is performed. Also, the floor space 7 and the outside of the office building 1 communicate with each other through the opening 9 (that is, the mounting part of the curtain wall 10) after the existing curtain wall 10 is removed. However, the gondola device 20 is disposed on the existing curtain wall 10 and is covered in advance by the gondola device 20. Therefore, the opening 9 after the existing curtain wall 10 is removed is closed by the gondola device 20. Since it is covered with the water plate 26, the scaffold members 22, 22, and the waterproof material 23, 25, rainwater from the outside may enter the floor space 7 inadvertently through the opening 9. Has been prevented.

The above-described replacement of the curtain wall 10 and the seismic reinforcement of the outer peripheral columns 3A are performed for all the curtain walls 10 and all the outer peripheral columns 3A in the construction section SK1. Thereafter, a new exterior material 43 is installed on each of the outer pillars 3A, and a new exterior material 43 is installed on the pipe space 45 installed on the side of each of the outer pillars 3A.
A new exterior material 43 is installed so as to cover the duct space 46 installed on the ceiling side in K1, and the renovation work for the construction section SK1 is completed. Thereafter, the renovation work in another floor or another construction section SKm (m is an integer of 2 or more and n or less) of the same floor is performed in the same procedure.

That is, the temporary partitioning material 40 is installed in the construction section SKm where the next operation is performed (for example, as shown by a two-dot chain line in FIG. 2), and the air conditioner 41 and the like in the construction section SKm are relocated.
Each outer pillar 3A, pipe space 45, duct space 4
6, the gondola device 20 is moved in the horizontal direction and / or the vertical direction, and the frame 21 is arranged in a form corresponding to the construction section SKm (shown by a two-dot chain line in FIG. 2). ), Replacement of the curtain wall 10 and seismic reinforcement of the outer pillar 3A. After the completion, relocation of the air conditioner 41 and the like into the construction area SKm, the outer material 43 of each outer pillar 3A, the pipe space 45, and the duct space 46. To install. This series of work is performed in each floor space 7
In the form of repeating sequentially for the construction sections SK1 to SKn, and in the form of repeating sequentially for the floor space 7 of each floor,
The renovation work of the entire office building 1 is completed.

As described above, the scaffold for the place where the curtain wall 10 is to be replaced is formed by the gondola device 20 by installing and arranging the gondola device 20, and the scaffold is formed around the building around the building like a conventional assembled scaffold. There is no need to erected from the side. Also, curtain wall 1
The opening 9 as an attachment part of the curtain wall 10
However, since the penetration of rainwater or the like into the opening 9 is prevented by the gondola device 20, the means for preventing the penetration of rainwater or the like is also provided by a conventional assembling scaffold (the conventional assembling scaffold prevents the penetration of rainwater or the like). It is not necessary to erected around the building from the ground side as in the above method. In other words, the gondola device 20 performs operations such as removal of the curtain wall 10 and can be arranged only at construction symmetrical locations where entry of rainwater or the like is to be prevented, and is installed and arranged at locations other than the constructional symmetrical locations. Because there is no need to keep the windows, the windows and the like at locations other than the construction symmetrical location will not be covered with such things as conventional scaffolding, so that the lighting and scenery etc. in the building 1 will not be impaired as much as possible. Sex can be maintained as much as possible.
In addition, by adopting the gondola device 20, the building 1
There is no need to install a conventional scaffolding around
By arranging the gondola device 20 only in the symmetrical portion of the construction, it is possible to construct a scaffold and prevent rainwater and the like from entering the building 1. Therefore, to construct these scaffolds and prevent rainwater and the like from entering the building 1. Material can be reduced as much as possible.

The renovation work of the entire office building 1 is performed by sequentially moving the gondola device 20 in the vertical and horizontal directions along the outer side surface 11 of the building 1, so that the work such as the removal of the curtain wall 10 is performed. Is not generated at once, but may be one (or two or three at a time. In this case, however, the gondola device 20)
Is required for two or three. The work was performed only at the work symmetrical point of (2), and each time the work was completed, the work was sequentially moved to the next work symmetrical point. Therefore, the number of places where the construction is performed at one time in the building 1 can be minimized, which is excellent in terms of livability. When work is performed using a plurality of gondola apparatuses 20, if the construction sections in charge of the gondola apparatuses 20 are set to different floors, one construction section in operation in one floor space 7 is used. Only the livability is maintained. Naturally, work is simultaneously performed in a plurality of construction sections using a plurality of gondola devices 20, so that the work time in the entire building is reduced.

In the floor space 7, there are construction sections SK1 to SKn for repair work and the construction sections SK1 to SKn.
Since the temporary partitioning material 40 in the form of partitioning from the area other than Kn is installed, the livability is maintained as much as possible in the area other than the construction sections SK1 to SKn.
This is advantageous because noise, outside air, dust, and the like are prevented from entering areas other than Kn. In addition, the temporary partition member 40 can also be provided with electromagnetic shielding performance. This allows
Electromagnetic waves generated at the time of welding work etc. are in the work area SK1 to SKn
This is advantageous because it does not have to affect the electronic devices in other areas.

In the above-described embodiment, the gondola device 2
0, the small gondola 32 is provided so as to be vertically movable with respect to the gondola device 20 and to be able to stop and communicate with the gondola device 20.
The operator can get on and off (or load and unload materials) to and from the small gondola 32 and the ground by moving the small gondola 32 up and down and stopping it on the ground or on the roof 1a of the building 1. Workers get on and off (or load and unload materials) between the small gondola 32 and the roof 1a (or other floor) of the building 1, and
2 is moved up and down to stop the gondola device 20 so that the small gondola 32 and the gondola device 20
Workers get on and off (or load and unload materials). This eliminates the need to move the gondola device 20 itself for the operator to get on and off (or to load and unload materials), and the gondola device 2
The work can be carried out efficiently because it can be used exclusively as a scaffold or for stopping water such as rainwater while the 0 is arranged at the construction site.

[0031]

As described above, according to the first aspect of the present invention, an office building 1 or the like having an exterior curtain wall such as a plurality of curtain walls 10 in the form of an outer surface such as an outer surface 11 is provided. In the building, when the building is renovated by removing the exterior curtain wall, the building can be freely moved and positioned along the outer side surface of the building via predetermined lifting / lowering support means such as a hanging crane 15 or the like. A gondola scaffold such as a supported gondola device 20 is installed, and the gondola scaffold is positioned and arranged with respect to the exterior curtain wall to be removed. The gondola scaffold covers the outside of the exterior curtain wall to be removed. Since the gondola scaffold is used as a scaffold while water is removed to remove the exterior curtain wall, Scaffolds for portion to which removal of the external curtain wall, by installing arranged gondola scaffold, formed by the gondola scaffold, there is no need to stand installed from the ground side around the building as in the conventional assembly scaffolding. In addition, since the gondola scaffold prevents rainwater or the like from entering the mounting portion of the exterior curtain wall, the means for preventing rainwater or the like is also used as a conventional assembled scaffold (in the past, the assembled scaffold was used as a means for preventing rainwater or the like). There is no need to erected around the building from the ground side. In other words, the gondola scaffold can be placed only at constructionally symmetric locations where work such as removal of curtain walls should be prevented to prevent entry of rainwater, etc., and installed and placed at locations other than the construction symmetrical locations. Since there is no need, windows and the like at locations other than the construction symmetrical location are not covered with things like conventional scaffolding, etc., so that lighting and scenery etc. in the building are not impaired as much as possible, and livability is minimized. Can be maintained. In addition, by employing a gondola scaffold, there is no need to install an assembling scaffold around the building as in the past, and by placing the gondola scaffold only at the construction symmetrical point, construction of the scaffold, rainwater in the building, etc. Therefore, it is possible to minimize the amount of materials for constructing these scaffolds and preventing entry of rainwater or the like into the building.

According to a second aspect of the present invention, there is provided the repair method for a building according to the first aspect, wherein a floor space such as a floor space 7 separated from the outside by the exterior curtain wall is formed in the building. And, before performing the removal of the exterior curtain wall, in the floor space, while setting a work area such as construction section SK1 to SKn in a form adjacent to the exterior curtain wall to be removed, in the floor space, Since the temporary partition member such as the temporary partition member 40 is provided to partition the work area and the area other than the work area, in addition to the effect of the first invention, the livability is improved in the area other than the work area in the floor space. Is maintained as much as possible. That is, it is convenient to perform normal activities (for example, normal work in an office or the like) in an area other than the work area. In addition, the temporary partitioning member allows noise,
This is advantageous because entry of outside air, dust and the like is prevented.

According to a third aspect of the present invention, in the method for renovating a building according to the first aspect, the renovation of the building comprises:
Since the gondola scaffold is sequentially moved in the vertical direction and the horizontal direction along the outer side surface, when renovating a building in a range larger than one gondola scaffold, removing curtain walls, etc. Even if a large number of symmetrical parts are not performed at once, work is performed only at one or a small number of symmetrical parts at a time, and each time the work is completed, it is sequentially moved to the next symmetrical part. What should I do? Therefore, in addition to the effect of the first invention, the number of places where construction is performed at a time in the building can be reduced as much as possible. In addition, when renovating a building in a range larger than one gondola scaffold in the horizontal direction, the work may be performed by sequentially moving the gondola scaffold along the outer surface in the horizontal direction. This is convenient because it is not necessary to arrange the devices side by side in the horizontal direction.

According to a fourth aspect of the present invention, in the building repair method according to the first aspect, a sub-gondola such as a small gondola 32 is movable on the gondola scaffold in a vertical direction with respect to the gondola scaffold. And, since the stop communication is provided to the gondola scaffold, the worker getting on / off (or loading / unloading materials) on / from the gondola scaffold is
By moving the sub-gondola up and down and stopping it, workers can get on and off (or load and unload materials) between the sub-gondola and the ground or between the sub-gondola and the building. By moving the sub gondola and the gondola scaffold by moving it up and down, the operator can get on and off (or load and unload materials) between the sub gondola and the gondola scaffold. That is, the first
In addition to the effects of the invention, it is not necessary to move the gondola scaffold itself for getting on and off the workers (or loading and unloading materials), and the gondola scaffold is used exclusively as a scaffold and for stopping water such as rainwater. Work can be performed efficiently because it can be used.

[Brief description of the drawings]

FIG. 1 is a front view showing an office building undergoing renovation work by a building renovation method according to the present invention.

FIG. 2 is a sectional view taken along line X1-Y1 of FIG. 1;

FIG. 3 is an enlarged cross-sectional view taken along line X2-Y2 in FIG.

FIG. 4 is a horizontal sectional view of the gondola device and the like shown in FIG. 1;

FIG. 5 is a diagram showing one process of a repair work.

FIG. 6 is a diagram showing one process of a repair work.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Building (office building) 7 ... Floor space 10 ... Exterior curtain wall (curtain wall) 11 ... Outside surface 15 ... Lifting support means (hanging crane) 20 ... Gondola scaffolding (gondola device) 32 ... … Sub gondola (small gondola) 40 …… Temporary partition member (temporary partition material) SK1 to SKn …… Work area (construction section)

Claims (4)

[Claims] In a building having a plurality of exterior curtain walls forming an outer surface, when the building is renovated by removing the exterior curtain wall, a predetermined elevating and lowering support means is provided for the building. A gondola scaffold supported so as to be movable and positioned along the outer surface via the outside is installed, and the gondola scaffold is positioned and arranged with respect to the exterior curtain wall to be removed, and the gondola scaffold is removed by the gondola scaffold. A method for repairing a building configured to remove the exterior curtain wall by using the gondola scaffold as a scaffold while covering the outside of the exterior curtain wall with water. 2. A floor space separated from the outside by the exterior curtain wall is formed in the building, and the exterior curtain to be removed is placed in the floor space before the exterior curtain wall is removed. 2. A work area is set adjacent to a wall, and a temporary partition member is provided in the floor space so as to separate the work area from an area other than the work area.
The renovation method of the building described. 3. The method according to claim 1, wherein the renovation of the building is performed by sequentially moving the gondola scaffold vertically and horizontally along the outer surface. . 4. The building according to claim 1, wherein a sub-gondola is provided on the gondola scaffold so as to be vertically movable with respect to the gondola scaffold and to be able to stop and communicate with the gondola scaffold. Renovation method.