JP6061339B2 - Structure reconstruction method and structure reconstruction system - Google Patents

Description

  The present invention relates to a structure reconstruction method and a structure reconstruction system. Specifically, the present invention relates to a structure reconstructing method and a structure reconstructing system for reconstructing an existing structure.

  Conventionally, there is a case where an existing outer wall of a high-rise building is dismantled and a new outer wall panel is attached. In this case, since it is difficult to install a framework scaffold in a high-rise building and the outer wall panel is quite heavy, for example, the following construction system has been proposed (see Patent Document 1).

  That is, the construction system includes a support frame provided on the roof floor of a building, a gondola mechanism that is supported by the support frame and conveys workers to a predetermined position on the outer wall surface, and a predetermined position on the outer wall surface that is supported by the support frame. The transporting mechanism that transports the outer wall panel to the surface, the suspension scaffold that is supported by being suspended by the support frame and covers the moving range of the gondola mechanism and the traveling transport mechanism, and the outer wall panel is transported from the ground surface toward the top of the building A temporary lift.

The support frame includes a plurality of support arms that are provided on the roof floor of the building and project outward, and two rails that are provided at the ends of the support arms and extend along the outer periphery of the building.
The gondola mechanism includes a gondola on which an operator gets on, and a cart that can move along a rail at the tip of the support frame while hanging and supporting the gondola via a wire. According to this gondola mechanism, the gondola on which the worker has boarded can be moved horizontally or vertically.

The traveling type transport mechanism can move along the rails at the tip of the support frame, and can support the outer wall panel by hanging it through a wire. According to this traveling type transport mechanism, the outer wall panel can be moved horizontally or vertically.
The temporary lift includes a rail that extends from the ground surface to the top of the building along the outer wall surface, and a cage that moves along the rail. According to this temporary lift, the outer wall panel can be conveyed from the ground surface to the upper part of the building by raising the cage along the rail.

According to this construction system, the outer wall panel is attached by the following procedure.
First, the work ranges of the gondola mechanism and the traveling transport mechanism are determined, and the suspension scaffold is set so as to cover the work range.
Next, the outer wall panel is placed on the cage of the temporary lift, and then the cage is raised along the rails to transport the outer wall panel from the ground surface to the upper part of the building. Next, the outer wall panel on the temporary lift cage is suspended and supported by the traveling transport mechanism. Next, the gondola is moved to a predetermined position by the gondola mechanism, and the outer wall panel is moved to the predetermined position by the traveling transport mechanism. Next, the worker on the gondola attaches the outer wall panel supported by the traveling transport mechanism to a predetermined position. By repeating such work, the outer wall panel is attached to a predetermined work range.

JP 2006-348691 A

  However, in the construction system as described above, the existing outer wall removal work and the new outer wall panel attachment work are simultaneously performed within a predetermined work range. Therefore, the work becomes complicated, so that the work efficiency is lowered and the removed existing outer wall comes into contact with the new outer wall, and the new outer wall may be damaged.

  An object of the present invention is to provide a structure reconstructing method and a structure reconstructing system capable of preventing damage to a new outer wall while preventing a decrease in work efficiency when an existing outer wall is replaced with a new outer wall.

  The structure remodeling method according to claim 1 is a structure remodeling method for remodeling an existing structure (for example, an existing building 1 described later), and is supported by the existing structure and surrounds the existing structure (For example, a base 21 which will be described later), an upper temporary wall (for example, an upper temporary wall 22 which will be described later) provided on the upper side of the base and covering the outer peripheral surface of the existing structure, and provided on the lower side of the base. An initial step (for example, steps S1 and S2 to be described later) for constructing a temporary wall including a lower temporary wall (for example, a lower temporary wall 23 to be described later) covering the outer peripheral surface of the existing structure, and the lower temporary wall In a space surrounded by (for example, a dismantling work space 40 described later), at least an existing outer wall (for example, an existing outer wall 14 described later) is disassembled, and a space surrounded by the upper temporary wall (for example, a new work described later) Space 50), small At least a remodeling step (for example, step S3 to be described later) for attaching a new outer wall (for example, a new outer wall 16 to be described later) and a repeating step (for example, step S4 to be described later) for repeating the remodeling step while moving the temporary wall downward. , S5).

According to this invention, the temporary wall including the base, the upper temporary wall, and the lower temporary wall is constructed. At this time, the work space surrounded by the temporary wall is divided into two upper and lower work spaces, that is, the upper work space surrounded by the upper temporary wall and the lower work space surrounded by the lower temporary wall. And partition.
Next, at least the existing outer wall is disassembled in the space surrounded by the lower temporary wall, and at least the new outer wall is attached in the space surrounded by the upper temporary wall. Then, the disassembly of the existing outer wall and the attachment of the new outer wall are repeated while moving the temporary wall downward.

In this way, the work space surrounded by the temporary wall is partitioned vertically at the base, and in the lower space surrounded by one work space, that is, the temporary wall, the existing outer wall is disassembled while the other work space, that is, the temporary In the upper space surrounded by walls, a new outer wall will be installed. Therefore, the work of removing the existing outer wall and the work of attaching the new outer wall can be performed simultaneously in different work areas, and work efficiency can be improved. In addition, the safety of the worker can be ensured, and the flying and dropping of materials and tools can be reliably prevented.
Further, in the layer (floor) on which the installation work of the new outer wall is completed, the removal work of the existing outer wall has already been completed, so the existing outer wall that has been removed does not come into contact with the new outer wall and the new outer wall is not damaged.

  In addition, because the work area is enclosed by the upper temporary wall and the lower temporary wall, dust can be prevented from scattering around the existing structure when it is dismantled, and noise can be reduced. Can also be prevented. Thus, the load on the surrounding environment can be reduced.

  Further, even when disassembling a high-rise part of an existing structure, the existing structure can be disassembled efficiently because the temporary wall does not affect the wind.

  The structure reconstructing method according to claim 2 is characterized in that the upper temporary wall and the lower temporary wall are configured by laminating frame scaffolds (for example, a frame scaffold 24 described later), respectively.

According to the present invention, since the upper temporary wall is configured by laminating the frame scaffolding, the height of the upper temporary wall from the base is appropriately adjusted, and the work area for the installation work of the new outer wall is made arbitrarily wide. Can be set. In addition, since the lower temporary wall is configured by stacking frame scaffolds, the depth of the lower temporary wall from the base (that is, the distance from the base to the lower end of the lower temporary wall) is appropriately adjusted to The work area for wall demolition work can be set to any size.
Further, the height (depth) of the temporary wall can be freely adjusted later by further stacking the frame scaffolds or removing some of the frame scaffolds.

  The structure remodeling system according to claim 3 is a structure remodeling system for remodeling an existing structure, and is provided on the upper side of the base portion that is supported by the existing structure and surrounds the existing structure. An upper temporary wall that covers the outer peripheral surface of the existing structure, and a temporary wall that is provided below the base and has a lower temporary wall that covers the outer peripheral surface of the existing structure, and is surrounded by the lower temporary wall In the space, at least the existing outer wall is disassembled, and in the space surrounded by the upper temporary wall, at least the new outer wall is attached.

  According to the present invention, there is an effect similar to that of the first aspect.

  The structure reconstruction system according to a fourth aspect is characterized in that the upper temporary wall and the lower temporary wall are each configured by stacking frame scaffolds.

  According to the present invention, there is an effect similar to that of the second aspect described above.

  The structure reconstructing method according to claim 5 is a structure reconstructing method for reconstructing an existing structure (for example, an existing building 1 to be described later), and a base (for example, a base 21 to be described later) surrounding the existing structure. In one work space (for example, a dismantling work space 40 described later), the outer wall of the existing structure (for example, an existing outer wall 14 described later) is dismantled, and in the other work space, A new outer wall (for example, a new outer wall 16 described later) is attached to the existing structure.

  According to the present invention, there is an effect similar to that of the first aspect.

The structure reconstructing method of the present invention is a structure reconstructing method for reconstructing an existing structure from the upper floor toward the lower floor, wherein the dismantling step of dismantling leaving at least a part of the frame of any floor, and renovation process of renovation the floor that was disassembled, comprising a lowering step in which the temporary wall descends, perform the dismantling step and the renovation process in parallel the same time (e.g., step S3 will be described later) is preferred.

  According to the present invention, there is an effect similar to that of the first aspect.

  According to the present invention, the work space surrounded by the temporary wall is divided up and down at the base, and in the lower space surrounded by one work space, that is, the temporary wall, the other outer work space is disassembled. That is, a new outer wall is newly attached in the upper space surrounded by the temporary wall. Therefore, the work of removing the existing outer wall and the work of attaching the new outer wall can be performed simultaneously in different work areas, and work efficiency can be improved. In addition, the safety of the worker can be ensured, and the flying and dropping of materials and tools can be reliably prevented. Further, in the layer (floor) on which the installation work of the new outer wall is completed, the removal work of the existing outer wall has already been completed, so the existing outer wall that has been removed does not come into contact with the new outer wall and the new outer wall is not damaged. In addition, because the work area is enclosed by the upper temporary wall and the lower temporary wall, dust can be prevented from scattering around the existing structure when it is dismantled, and noise can be reduced. Can also be prevented. Thus, the load on the surrounding environment can be reduced. Further, even when disassembling a high-rise part of an existing structure, the existing structure can be disassembled efficiently because the temporary wall does not affect the wind.

It is sectional drawing of the existing structure to which the structure reconstruction method which concerns on one Embodiment of this invention is applied. It is a flowchart of the procedure which rebuilds an existing structure by the structure rebuilding method which concerns on the said embodiment. It is FIG. (1) for demonstrating the procedure which rebuilds an existing structure by the structure rebuilding method which concerns on the said embodiment. It is a figure for demonstrating the procedure which constructs the temporary wall of the structure reconstruction method which concerns on the said embodiment. It is an expanded sectional view of the base part of the temporary wall of the structure reconstruction method which concerns on the said embodiment. It is FIG. (2) for demonstrating the procedure which rebuilds an existing structure by the structure rebuilding method which concerns on the said embodiment. It is FIG. (3) for demonstrating the procedure which rebuilds an existing structure by the structure rebuilding method which concerns on the said embodiment. It is FIG. (4) for demonstrating the procedure which rebuilds an existing structure by the structure rebuilding method which concerns on the said embodiment. It is FIG. (5) for demonstrating the procedure which rebuilds an existing structure with the structure rebuilding method which concerns on the said embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of an existing building 1 as an existing structure to which a structure reconstructing method according to an embodiment of the present invention is applied.
The existing building 1 is a high-rise building with m (m is a natural number) floors. This existing building 1 includes a plurality of existing pillars 11 and a plurality of existing large beams 12 that connect these existing pillars 11 as a framework, that is, a structure. Moreover, this existing building 1 is provided with the existing floor slab 13, the existing outer wall 14, the existing partition wall 15, etc. as a non-structural body.

  The structure reconstruction method of the present invention is to reconstruct the existing building 1. Specifically, the existing outer wall 14 of the existing building 1 is disassembled and a new outer wall 16 (see FIG. 9) is attached.

  Hereinafter, the procedure for renovating the existing building 1 will be described with reference to the flowchart of FIG.

In step S1, as shown in FIG. 3, the outer periphery scaffolding 20 as a temporary wall is constructed.
The outer periphery scaffold 20 is suspended and supported from an existing floor slab 13 on the roof floor of the existing building 1 and has a rectangular frame-shaped base portion 21 surrounding the existing building 1 and an outer periphery of the existing building 1 provided above the base portion 21. The upper temporary wall 22 which covers a surface, and the lower temporary wall 23 which is provided under the base 21 and covers the outer peripheral surface of the existing building 1 are provided.

  Each of the upper temporary wall 22 and the lower temporary wall 23 has a height corresponding to two layers of the existing building 1, and is configured by stacking frame scaffolds 24, for example, in six stages. That is, the upper temporary wall 22 is constructed by laminating the frame scaffold 24 upward on the base 21. On the other hand, the lower temporary wall 23 is constructed from the lower surface of the base portion 21 by being laminated downward while hanging and supporting the frame scaffold 24.

The outer peripheral surface of the upper temporary wall 22 is covered with a mesh sheet 25. However, the present invention is not limited thereto, and the outer peripheral surface of the upper temporary wall 22 may be covered with a soundproof panel.
The outer peripheral surface of the lower temporary wall 23 is covered with a soundproof panel 26. However, the present invention is not limited thereto, and the outer peripheral surface of the lower temporary wall 23 may be covered with a mesh sheet.

Specifically, first, as shown in FIG. 4, support devices 30 that support the base 21 are provided at predetermined intervals on the existing floor slab 13 on the roof floor of the existing building 1. The support device 30 is provided on the existing floor slab 13 on the rooftop floor, and extends and protrudes toward the outside of the existing building 1, and a hydraulic jack 32 provided at the tip of the extension 31. A suspension member 33 supported by the hydraulic jack 32 so as to be movable up and down and coupled to the base portion 21.
In the present embodiment, the extending portion 31 is a truss beam. However, the present invention is not limited to this, and a straight steel material such as H steel may be used.

  Next, as shown in FIG. 4, the outer circumference scaffold 20 is suspended and supported by the support device 30. In FIG. 4, the upper temporary wall 22 and the lower temporary wall 23 are indicated by broken lines for easy understanding.

That is, first, the base 21 is suspended and supported from the hydraulic jack 32 via the suspension member 33. At this time, the height of the base 21 is set to (m−3) floor level, and the outside of the base 21 is suspended and supported by the suspension member 33.
Next, the upper temporary wall 22 is installed above the base 21 and the lower temporary wall 23 is installed below the base 21.

  Hereinafter, a space surrounded by the upper temporary wall 22 is referred to as a new work space 50, and a space surrounded by the lower temporary wall 23 is referred to as a dismantling work space 40. Then, the new work space 50 is provided on the m floor and the (m-1) floor, and the dismantling work space 40 is provided on the (m-2) floor and the (m-3) floor.

FIG. 5 is an enlarged cross-sectional view of the base 21 of the outer periphery scaffold 20.
The base 21 is provided with a gap closing member 27 that closes the gap between the base 21 and the outer wall surface of the existing building 1. The gap closing member 27 includes a flat closing member main body 271 and a rubber member 272 that is provided at a distal end edge of the closing member main body 271 and is elastically deformable. The rubber member 272 is in close contact with the outer wall surface of the existing building 1, thereby reliably closing the gap between the base portion 21 and the outer wall surface of the existing building 1.

  Therefore, the gap closing member 27 of the base portion 21 is divided into two upper and lower work spaces, that is, a new work space 50 surrounded by the upper temporary wall 22, and a lower temporary wall 23. And the dismantling work space 40 surrounded by.

  Further, the upper temporary wall 22 and the lower temporary wall 23 are provided with a moving wall joint 28 that can move along the outer wall surface of the existing building 1. The distal end of the moving wall joint 28 is locked to a gondola guide (not shown) provided on the outer wall surface of the existing building 1 and extending in a substantially vertical direction, so that the moving wall joint 28 moves along the gondola guide. The movement of the outer wall surface in the out-of-plane direction is restricted.

In step S <b> 2, as shown in FIG. 6, the existing outer wall 14 of the existing building 1 is dismantled in the new work space 50.
In this dismantling work, after the existing outer wall 14 is removed, it is subdivided in the dismantling work space 40 and transported to the lower floor using an internal elevator (not shown) of the existing building 1. Alternatively, a carry-out port (not shown) may be provided inside or on the outer periphery of the existing building 1 and transported to the lower floor through this carry-out port. The demolished material transported to the lower floor is sorted out into recyclable materials and industrial waste, and then taken out of the venue.

In step S3, as shown in FIG. 7, the existing outer wall 14 of the existing building 1 is dismantled in the dismantling work space 40 in the same manner as in step S2.
Simultaneously with the disassembly of the existing outer wall 14, the new outer wall 16 is attached in the new work space 50 as shown in FIG. 7. At this time, reinforcing columns and reinforcing beams may be provided as appropriate.
In this attachment work, the new outer wall 16 is transported from the lower floor to the current floor using an unillustrated internal elevator of the existing building 1.

In step S4, as shown in FIG. 8, the outer periphery scaffold 20 is moved downward by two layers. Specifically, the outer peripheral scaffold 20 is moved downward by driving the hydraulic jack 32 and lowering the suspension member 33.
As a result, the new work space 50 and the dismantling work space 40 are formed downward by two layers. That is, the new work space 50 is located on the (m-2) floor and the (m-3) floor, and the dismantling work space 40 is located on the (m-4) floor and the (m-5) floor.

  In step S5, as shown in FIG. 9, step S3 is executed to disassemble the existing outer wall 14 and attach the new outer wall 16. Thus, steps S3 and S4 are repeated as one set, and the reconstruction work is performed from the upper floor to the lower floor.

According to this embodiment, there are the following effects.
(1) The work space surrounded by the outer periphery scaffold 20 is divided up and down by the base 21, and the existing outer wall 14 is dismantled in the lower space surrounded by the lower temporary wall 23, that is, in the dismantling work space 40, In the upper space surrounded by the upper temporary wall 22, that is, in the new work space 50, the new outer wall 16 is newly attached. Therefore, the work of removing the existing outer wall 14 and the work of attaching the new outer wall 16 can be performed simultaneously in different work areas, and work efficiency can be improved. In addition, the safety of the worker can be ensured, and the flying and dropping of materials and tools can be reliably prevented.
Further, since the existing outer wall 14 has already been removed from the layer (floor) where the new outer wall 16 is attached, the removed existing outer wall 14 comes into contact with the new outer wall 16 and the new outer wall 16 is damaged. There is nothing.

  Since the work area is surrounded by the upper temporary wall 22 and the lower temporary wall 23, when the existing building 1 is dismantled, dust can be prevented from being scattered around, the noise can be reduced, and the dismantling material can be dropped. Can also be prevented. Thus, the load on the surrounding environment can be reduced.

  Even when the high-rise part of the existing building 1 is dismantled, the existing scaffold 1 can be dismantled efficiently because it is not affected by the wind from the outer periphery scaffold 20.

(2) Since the upper temporary wall 22 is configured by laminating the frame scaffold 24, the height of the upper temporary wall 22 from the base 21 can be adjusted as appropriate to set the new work space 50 to an arbitrary size. In addition, since the lower temporary wall 23 is configured by laminating the frame scaffold 24, the depth of the lower temporary wall 23 from the base 21 (that is, the distance from the base 21 to the lower end of the lower temporary wall 23) is set. By appropriately adjusting, the dismantling work space 40 can be set to an arbitrary size.
Further, the height (depth) of the temporary walls 22 and 23 can be freely adjusted later by further stacking the frame scaffolds 24 or removing some of the frame scaffolds 24.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
Moreover, in this embodiment, the outer periphery scaffold 20 was constructed near the rooftop floor of the existing building 1. However, the present invention is not limited to this, and the outer periphery scaffold 20 is constructed on the ground, and then the hydraulic jack 32 is driven to construct the outer periphery scaffold. 20 may be raised from the ground to the vicinity of the rooftop floor of the existing building 1.

  Moreover, in this embodiment, although the base 21 was suspended and supported from the existing floor slab 13 of the rooftop floor of the existing building 1, it is not restricted to this. For example, you may project the base 21 from the structure of the existing building 1 substantially horizontally. In this case, the outer periphery scaffold 20 is moved downward by changing the base 21.

  Further, the outer periphery scaffold 20 may be divided for each side of the existing building 1. For example, in this embodiment, the outer periphery scaffold 20 can be divided into four, and each of the divided outer periphery scaffolds 20 covers one side of the existing building 1. In this case, if the divided outer scaffold 20 is moved downward according to the progress of the construction of each side surface of the existing building 1, a step is generated between the divided outer scaffolds 20, so that this step portion also Build a scaffold.

1 ... Existing building (existing structure)
DESCRIPTION OF SYMBOLS 11 ... Existing pillar 12 ... Existing large beam 13 ... Existing floor slab 14 ... Existing outer wall 15 ... Existing partition wall 16 ... Newly installed outer wall 20 ... Outer periphery scaffold (temporary wall)
DESCRIPTION OF SYMBOLS 21 ... Base 22 ... Upper temporary scaffold 23 ... Lower temporary scaffold 24 ... Frame scaffold 25 ... Mesh sheet 26 ... Sound insulation panel 27 ... Gap closing member 28 ... Moving wall connection 30 ... Supporting device 31 ... Extension part 32 ... Hydraulic jack 33 ... Suspension material 40 ... Demolition work space 50 ... New work space 271 ... Plate body 272 ... Rubber member

Claims (5)

A method for reconstructing a structure that remodels an existing structure,
A base part that is supported by the existing structure and surrounds the existing structure, an upper temporary wall that is provided above the base part and covers an outer peripheral surface of the existing structure, and a base part that is provided below the base part and the existing structure An initial step of constructing a temporary wall comprising a lower temporary wall covering the outer peripheral surface of the object;
In the space surrounded by the lower temporary wall, at least the existing outer wall is demolished, and in the space surrounded by the upper temporary wall, at least a renovation step of attaching a new outer wall;
And a repeating step of repeating the remodeling step while moving the temporary wall downward.   The method for reconstructing a structure according to claim 1, wherein the upper temporary wall and the lower temporary wall are configured by stacking frame scaffolds, respectively. A structure reconstruction system for remodeling an existing structure,
A base part that is supported by the existing structure and surrounds the existing structure, an upper temporary wall that is provided above the base part and covers an outer peripheral surface of the existing structure, and a base part that is provided below the base part and the existing structure A temporary wall having a lower temporary wall covering the outer peripheral surface of the object,
In the space surrounded by the lower temporary wall, at least the existing outer wall is dismantled,
In the space surrounded by the upper temporary wall, at least a new outer wall is attached.   4. The structural reconstruction system according to claim 3, wherein the upper temporary wall and the lower temporary wall are each configured by stacking frame scaffolds. A method for reconstructing a structure that remodels an existing structure,
Dividing the work space up and down at the base surrounding the existing structure,
A structure reconstructing method comprising disassembling an outer wall of the existing structure in one work space and attaching a new outer wall to the existing structure in the other work space .

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