JP2012207379A - Structure demolition system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure demolition system capable of safely constructing space for demolition.SOLUTION: A structure demolition system 60 is used to demolish an existing building 1. The structure demolition system 60 comprises: a temporary roof 61 for covering top surfaces of some existing beams 12 at the R-story floor level of the existing building 1; a temporary column 20 that is supported on a lower story with respect to the R-story to support the temporary roof 61; and an outer peripheral scaffold 62 that is provided along the outer periphery of the temporary roof 61. The outer peripheral scaffold 62 is constructed by connecting a plurality of scaffold units 70 comprising prefabricated scaffolding 80.

Description

  The present invention relates to a structure dismantling system.

Conventionally, in a high-rise building, there is a case where an existing building is dismantled and a new building is constructed due to the aging of facilities and structures.
Here, as a method for dismantling an existing building, for example, the following method has been proposed. That is, a hat truss is provided on the top floor, the hat truss is supported by a mast, and the mast is supported by an existing building via a mast base. Further, a frame is suspended and supported on the outer periphery of the hat truss, and an external curing sheet is attached to the frame.
The space covered by the hat truss and the external curing sheet is used as a dismantling work space, and the building is dismantled while preventing dust and noise by performing the dismantling work in the dismantling work space (see Patent Document 1). ).

Japanese Patent No. 3218519

  However, in the above dismantling method, it is necessary to first attach the frame and the external curing sheet to the hat truss located on the uppermost floor, but it is difficult to ensure safety because of the work at a high place.

  An object of the present invention is to provide a structure dismantling system that can safely construct a space for dismantling.

  The structure dismantling system according to claim 1 is a structure dismantling system for disassembling a structure, wherein a temporary roof covering an upper surface of a part of an existing beam of a predetermined floor of the structure, and the predetermined floor A temporary pillar supported by the lower floor and supporting the temporary roof; and a temporary wall provided along an outer periphery of the temporary roof, wherein the temporary wall connects a plurality of scaffold units made of frame scaffolds. It is characterized by being constructed.

According to this invention, when constructing a scaffold, a plurality of scaffold units composed of frame scaffolds are assembled on the ground, and the plurality of scaffold units are lifted in order and arranged along the outer periphery of the temporary roof, Connect the scaffold units together to build a temporary wall.
Therefore, since it is possible to lift after assembling the scaffold unit on the ground and attaching the curing sheet and curing panel, it is only necessary to connect the scaffold units to each other at a high place. Since it is not necessary to attach a curing sheet, safety can be easily secured and the dismantling period can be shortened.

  The structure dismantling system according to claim 2 is characterized in that the frame scaffold is suspended and supported from the temporary roof.

  According to the present invention, since the temporary wall is configured by the frame scaffolding suspended and supported from the temporary roof, it is not necessary to change the support position of the frame scaffolding throughout the disassembly period, so that the disassembly period can be further shortened.

  In the structure disassembly system according to claim 3, a gondola guide extending in a substantially vertical direction is provided on an outer wall surface of the structure, and the scaffold unit is engaged with the gondola guide, A slide member that is movable along the gondola guide and that is restricted from moving outwardly of the outer wall surface is provided.

If a curing sheet or a curing panel is attached to the scaffold unit, the scaffold unit tends to be unstable due to the influence of wind at high altitude.
However, according to the present invention, since the scaffold unit is provided with the slide member that is movable along the gondola guide and is restricted from moving outwardly from the outer wall surface, even if a curing sheet or a curing panel is attached to the scaffold unit. The platform unit can be maintained in a stable position without being affected by wind at high altitude.

  The structure disassembly system according to claim 4 is characterized in that a lower end portion of the frame scaffold is connected to the temporary roof by a suspension wire.

Since the framework scaffold is suspended and supported from the temporary roof, if a part of the framework scaffold is broken, a part of the scaffold material may fall.
However, according to the present invention, since the lower end of the frame scaffold is connected to the temporary roof with the suspension wire, even if a part of the frame scaffold is broken, it is possible to prevent a part of the scaffold from falling.

According to the present invention, when constructing a scaffold, a plurality of scaffold units composed of frame scaffolds are assembled on the ground, and the plurality of scaffold units are lifted in order and arranged along the outer periphery of the temporary roof, Connect the scaffold units together.
Therefore, since the scaffold unit is assembled on the ground and the curing sheet and the curing panel are attached and then lifted, it is only necessary to connect the scaffold units at high places. Since it is not necessary to attach a curing sheet, safety can be easily secured and the dismantling period can be shortened.

It is sectional drawing of the existing building to which the structure dismantling system which concerns on one Embodiment of this invention was applied. It is the front view and side view of a temporary pillar attached to the existing building which concerns on the said embodiment. It is a cross-sectional view of the lower part of the temporary pillar which concerns on the said embodiment. It is a cross-sectional view of the central portion of the temporary pillar according to the embodiment. It is a top view of the temporary pillar which concerns on the said embodiment. It is a top view of the temporary roof provided in the existing building which concerns on the said embodiment. It is a side view of the outer periphery scaffold which concerns on the said embodiment. It is sectional drawing of the outer periphery scaffold based on the said embodiment. It is an expanded sectional view of the lower scaffold unit which constitutes the perimeter scaffold concerning the embodiment. It is sectional drawing of the upper part of the outer periphery scaffold which concerns on the said embodiment. It is sectional drawing of the intermediate part of the outer periphery scaffold which concerns on the said embodiment. It is sectional drawing of the lower part of the outer periphery scaffold which concerns on the said embodiment. It is the upper side figure and side view of the movement wall connection which concern on the said embodiment. It is FIG. (1) for demonstrating the procedure which demolishes the existing building which concerns on the said embodiment. It is FIG. (2) for demonstrating the procedure which demolishes the existing building which concerns on the said embodiment. It is FIG. (3) for demonstrating the procedure which demolishes the existing building which concerns on the said embodiment. It is FIG. (1) for demonstrating the procedure which builds the outer periphery scaffold which concerns on the said embodiment. It is a figure (the 2) for demonstrating the procedure which builds the outer periphery scaffold based on the said embodiment. It is a top view of the gondola guide closing member used when constructing the outer periphery scaffold which concerns on the said embodiment. It is a side view of the wheel member used when constructing the perimeter scaffold concerning the 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 a structure to which a structure dismantling system according to an embodiment of the present invention is applied.
The existing building 1 is a 24-story steel structure, and is supported by the existing beam 11 that is a plurality of square steel pipes, a plurality of steel beams that connect these existing columns 11, and the existing beam 12. The existing slab 13 is provided.

  In this existing building 1, a structure dismantling system 60 is constructed in order to dismantle the existing building 1. The structure dismantling system 60 includes a temporary roof 61, an outer periphery scaffold 62 as a temporary wall provided on the outer periphery of the temporary roof 61, and a temporary roof 61 that is supported by the structure of the existing building 1 and extends in a substantially vertical direction. And a temporary pillar 20 that supports

The temporary roof 61 includes an existing beam 12 on the outer peripheral side of the 24th floor level, an existing column 11 on the outer peripheral side of the 24th floor, a temporary beam 63 that is a part of the existing beam 12 on the R floor level, and the temporary beam. A translucent plate member 64 attached to 63, a Telha 65 provided on the beam of the temporary beam 63, and an overhead traveling crane 66 installed under the beam of the temporary beam 63.
The outer periphery scaffold 62 is supported by the temporary beam 63.
A floor opening 15 communicating to the first floor is formed immediately below the Telha 65.
The Telha 65 is provided immediately above the floor opening 15, and is used for lowering the demolition material to the first floor, which is the carry-out floor, through the floor opening 15.

The temporary pillar 20 is installed in the vicinity of the existing pillar 11 of the existing building 1.
Hereinafter, although the temporary pillar 20A installed in the vicinity of the existing pillar 11A among the existing pillars 11 will be described, the other temporary pillars 20 have the same configuration.

  FIG. 2 is a front view and a side view of the temporary pillar 20A. In FIG. 2, a horizontal support rail 23B described later is omitted for easy understanding.

  The temporary column 20A includes a pair of column members 21 extending substantially parallel to the vertical direction, a connecting member 22 connecting the two column members 21, and horizontal support rails 23A and 23B extending along the column members 21 (FIG. 3). Reference).

  Each column member 21 includes a lower portion 211 having a substantially H-shaped cross section, a central portion 212 having a substantially box-shaped cross section provided on the lower portion 211, and an upper portion having a substantially H-shaped cross section provided on the central portion 212. 213.

  In the lower portion 211, two pairs of through-holes 214 facing each other are formed along the length direction.

  The temporary column 20 is attached to a step rod 24 extending along the length direction of the temporary column 20, a step rod jack 25 movable along the step rod 24, and a lower end of the step rod jack 25. A first pin member 26, a pair of linear pin members 27 attached to the temporary column 20, and a second pin member 30 connected to the pin member 27 are incorporated.

FIG. 3 is a cross-sectional view of the lower portion 211 of the temporary pillar 20A.
The temporary pillar 20 extends through the existing slab 13 of the existing building 1. That is, the floor opening 14 is formed in the existing slab 13 on each floor near the existing pillar 11A, and the temporary pillar 20 is inserted into the floor opening 14 on each floor.

  The second punching member 30 is inserted between the pair of column members 21 and has a structure in which the axial length can be changed. In other words, the second punching member 30 includes a main body 31 having a predetermined length, and a locking portion 32 provided on both end sides of the main body 31 so as to be rotatable in the horizontal direction.

  In the second punching member 30, the axial length of the second punching member 30 can be increased by arranging the locking portion 32 and the main body 31 in a straight line. On the other hand, the axial length of the second punching member 30 can be shortened by bending the locking portion 32 in the horizontal direction. In this state, since the axial length of the second punching member 30 is shorter than the internal dimension of the floor opening 14, the second punching member 30 can move in the vertical direction through the floor opening 14. Yes.

The pair of hairpin members 27 are inserted through a pair on the upper side of the two sets of through holes 214 above and below the column member 21.
The upper surface of the second yoke member 30 is fixed in contact with the lower surface of the hairpin member 27. Accordingly, the second yoke member 30 moves in the substantially vertical direction together with the temporary pillar 20.

By arranging the second punching member 30 at a predetermined height and increasing the length of the second punching member 30 in the axial direction, the second punching member 30 has two existing extending from the existing pillar 11A perpendicular to each other. It is arranged across the beam 12.
In this state, the second pinning member 30 is locked to the existing beam 12, and the pinion member 27 is locked to the second pinning member 30, so that the temporary column 20 is attached to the existing beam 12 via the second pinning member 30. Will be supported.

In addition, a pair of horizontal reaction force receiving members 51 and 52 that are supported by the existing building 1 and come into contact with the side surface of the temporary column 20 are provided in the floor opening 14 through which the lower portion 211 of the temporary column 20 is inserted.
That is, the horizontal reaction force receiving members 51 and 52 are mounted on the existing slab 13 and the first U-shaped first horizontal reaction force receiving member 51 which is mounted on the existing beam 12 and abuts against the side surface of the temporary column 20. And a substantially horizontal U-shaped second horizontal reaction force receiving member 52 that comes into contact with the side surface of the temporary pillar 20.

Each of the horizontal reaction force receiving members 51 and 52 is a long first guide portion 53 that contacts the horizontal support rail 23A, and extends orthogonally from both ends of the first guide portion 53 and contacts the horizontal support rail 23B. A second guide part 54. Thereby, the temporary pillar 20 can be smoothly moved downward.
The horizontal reaction force receiving members 51 and 52 are arranged in a substantially rectangular frame shape with the temporary column 20 interposed therebetween, so that the horizontal reaction force receiving members 51 and 52 do not interfere with the vertical movement of the second punching member 30.

FIG. 4 is a cross-sectional view of the central portion 212 of the temporary pillar 20.
The lower end surface of the step rod jack 25 is connected to a first pinning member 26 that extends horizontally and linearly, and both end sides of the first pinning member 26 are positioned immediately above the two existing beams 12.
An insertion hole through which the step rod 24 is inserted is formed in the center of the first blank.
By arranging the first pinning member 26 at a predetermined height, the first pinning member 26 is arranged across the two existing beams 12 extending perpendicularly from the existing column 11A. At this time, since the upper surfaces of these two existing beams 12 are exposed, the first punching member 26 is directly placed on the existing beams 12.
In this state, since the first pinning member 26 is locked to the existing beam 12, the temporary column 20 is supported by the existing beam 12 via the first pinning member 26.

FIG. 5 is a plan view of the temporary pillar 20.
The temporary pillar 20 is installed between two temporary beams 63 extending orthogonally from the upper end of the existing pillar 11A.
A support member 28 extending horizontally and linearly is provided on the upper end surface of the temporary column 20, and the two temporary beams 63 are positioned on the upper surfaces of both ends of the support member 28. Thereby, the upper end surface of the temporary pillar 20 is connected to the temporary beam 63 of the temporary roof 61 via the support member 28.

  Returning to FIG. 2, a joint 29 is provided on the side surface of the upper portion 213 of the temporary pillar 20. The side surface of the upper portion 213 of the temporary pillar 20 is connected to the upper side surface of the existing pillar 11 </ b> A on the 24th floor, which is a part of the temporary roof 61, through the joint 29.

FIG. 6 is a plan view of the temporary roof 61. In FIG. 6, the plate material 64 and the Telha 65 are omitted for easy understanding. FIG. 7 is a side view of the outer periphery scaffold 62, and FIG. 8 is a cross-sectional view of the outer periphery scaffold 62.
On the outer peripheral side of the roof surface of the existing building 1, existing gondola rails 16 are arranged in two rows over the entire periphery. These gondola rails 16 are part of the temporary roof 61, and brackets 67 made of H steel protruding toward the outside of the existing building 1 are arranged on the gondola rails 16 at predetermined intervals.
The outer periphery scaffolding 62 is supported by the bracket 67 and is provided along the outer wall surface 17 of the existing building 1.
The outer periphery scaffold 62 is a connection of the scaffold units 70 arranged along the outer periphery of the temporary roof 61.

  The scaffold unit 70 includes a support frame 71 fixed on the distal end portion of the bracket 67, an upper scaffold unit 72 provided on the support frame 71, and a lower scaffold unit 73 suspended and supported by the support frame 71. , Fixed wall connections 74A to 74D for connecting the lower scaffold unit 73 to the temporary roof 61, suspension wires 75 for connecting the lower end of the lower scaffold unit 73 to the temporary roof 61, and the lower scaffold unit 73 for the outer wall surface of the existing building 1 A movable wall connecting mechanism 76 coupled to the lower scaffold unit 73 and the outer wall surface of the existing building 1, and a lowermost frame 78 provided at the lower end of the lower scaffold unit 73. Prepare.

FIG. 9 is an enlarged cross-sectional view of the lower scaffold unit 73.
The lower scaffold unit 73 is composed of a frame scaffold 80 constructed with 11 steps in the height direction and 5 spans in the horizontal direction, and a lightweight H steel provided on the existing building 1 side of each step of the frame scaffold 80 and connected in the horizontal direction. A horizontal reinforcing member 81, a soundproof panel 82 provided over the entire surface of the frame scaffold 80, and a brace 87 provided immediately below the support frame 71 of the frame scaffold 80.

  The frame scaffold 80 includes a plurality of building frames 83 arranged at predetermined intervals, a cloth plate 84 that connects upper ends of the building frame 83, braces 85 that connect both side ends of the building frame 83, and a building And a baseboard 86 made of a steel scaffolding plate provided inside the frame 83.

  The building frame 83 includes a pair of cylindrical main pipes 831 that extend in a substantially vertical direction, a cylindrical connection pipe 832 that extends substantially horizontally and connects the upper parts of the main pipes 831, and a substantially vertical direction between the main pipes 831. A cylindrical secondary pipe 833 that extends and is connected to the connecting pipe 832; and a reinforcing pipe 834 that is provided between one of the pair of main pipes 831 (on the existing building 1 side) and the secondary pipe 833 to form a truss. Prepare.

The main pipes 831 positioned above and below are connected by the following procedure.
That is, a connecting pin 835 having an outer diameter smaller than the inner diameter of the main pipe 831 is prepared and inserted into the main pipe 831 at each end of the connecting pin 835. In this state, a bolt 836 is passed through the main pipe 831 and the connecting pin 835 from the outside of the main pipe 831, and a nut (not shown) is screwed into the bolt 836 and tightened.
Note that the upper and lower secondary pipes 833 are also connected in the same manner as the main pipe 831.

  Since the above-described frame scaffold 80 has a structure that is supported by being suspended from the support frame 71, the main pipe 831, the sub pipe 833, the connecting pin 835, and the bolt 836 can sufficiently withstand the tensile force due to the 11-stage scaffold load. It is made of material.

The cloth plate 84 is a flat plate-like member and is installed between the connecting pipes 832 of the building frame 83.
The brace 85 is attached between the main pipes 831 of the building frame 83.
The brace 87 improves the rigidity in the vicinity of the hanging position of the frame scaffold 80.

  The upper scaffold unit 72 is composed of a frame scaffold 80 constructed with one step in the vertical direction and five spans in the horizontal direction.

FIG. 10 is an enlarged cross-sectional view of the upper part of the outer periphery scaffold 62.
The support frame 71 includes a girder member 711 made of square steel arranged in two rows on the front end portion of the bracket 67, a connecting member 712 that connects the two rows of girder members 711 at predetermined intervals, and a girder member 711. A cylindrical main pipe 713 that penetrates and is fixed to extend in the substantially vertical direction, and a cylindrical secondary pipe 714 that penetrates and is fixed to the connecting member 712 and extends in the substantially vertical direction.

The lower end side of the main pipe 713 of the support frame 71 is connected to the main pipe 831 of the lower scaffold unit 73, and the upper end side of the main pipe 713 of the support frame 71 is connected to the main pipe 831 of the upper scaffold unit 72.
Further, the lower end side of the sub pipe 714 of the support frame 71 is connected to the sub pipe 833 of the lower scaffold unit 73, and the upper end side of the sub pipe 714 of the support frame 71 is connected to the sub pipe 833 of the upper scaffold unit 72. Yes.

FIG. 11 is a cross-sectional view of an intermediate portion of the outer periphery scaffold 62.
Fixed wall connection 74A-74D is comprised by four fixed wall connection 74A, 74B, 74C, 74D arrange | positioned in an order from the top.

A wall connecting and fixing piece 741 is fixed to the lower flange of the temporary beam 63 at the R floor level.
There are two horizontal reinforcing members 81 of the lower scaffold unit 73 that face the temporary beam 63. Of these, the upper side is the horizontal reinforcing member 81A and the lower side is the horizontal reinforcing member 81B.
The fixed wall connection 74A extends obliquely upward from the wall connection fixing piece 741 of the temporary beam 63 and is connected to the horizontal reinforcing member 81A.
The fixed wall connection 74B extends obliquely downward from the wall connection fixing piece 741 of the temporary beam 63 and is connected to the horizontal reinforcing member 81B.

A wall connection fixing piece 742 is fixed to the upper flange of the existing beam 12 at the 24th floor level of the temporary roof 61, and a wall connection fixing piece 743 is fixed to the lower flange.
There are two horizontal reinforcement members 81 of the lower scaffold unit 73 that face the existing beam 12. Of these, the upper side is the horizontal reinforcement member 81C and the lower side is the horizontal reinforcement member 81D.
The fixed wall connection 74C extends substantially horizontally from the wall connection fixing piece 742 of the existing beam 12, and is connected to the horizontal reinforcing member 81C.
The fixed wall connection 74D extends obliquely downward from the wall connection fixing piece 743 of the existing beam 12, and is connected to the horizontal reinforcing member 81D.

The fixed wall joints 74A to 74D described above are connected to the wall joint fixing pieces 741 to 743, the connection part 745 connected to the horizontal reinforcing members 81A to 81D, and both ends of the connection parts 745 and 746. And a rod 747 to be screwed.
One end side of the rod 747 is a reverse screw with respect to the other end side, and by rotating this rod 747, the distance between the wall connecting and fixing pieces 741 to 743 and the horizontal reinforcing members 81A to 81D can be adjusted. It has become.

The suspension wire 75 extends obliquely downward from the wall connecting and fixing piece 741 of the temporary beam 63, passes through the inner side of the horizontal reinforcing member 81B, and is connected to the horizontal reinforcing member 81 at the lowermost end.
The suspension wire 75 is provided with a turnbuckle 751, and the tension introduced into the suspension wire can be adjusted by rotating the turnbuckle 751.

FIG. 12 is an enlarged cross-sectional view of the lower part of the outer periphery scaffold 62.
The moving wall connecting mechanism 76 includes a moving wall connecting 90 provided in three steps on the lower end side of the lower scaffold unit 73, a wall connecting reinforcing brace 91 provided in two steps connecting the upper and lower moving wall connecting 90, and Is provided.

FIG. 13 is a top view and a side view of the moving wall joint 90.
The movable wall joint 90 includes a metal fitting 92 attached to the three horizontal reinforcing members 81 on the lower end side of the lower scaffold unit 73, and a wall joint member 93 attached to the metal fitting 92 so as to be rotatable upward. .
The wall connecting member 93 includes a wall connecting main body 94 that extends linearly, and two columnar slide portions 95 that are provided at the distal ends of the wall connecting main body 94 and extend substantially orthogonal to the wall connecting main body 94. Prepare.
Both end sides of the slide part 95 are substantially conical.

Here, gondola guides 171 extending in the vertical direction are formed at predetermined intervals on the outer wall surface 17 of the existing building 1. The gondola guide 171 has a rectangular cylindrical shape with a slit extending in a substantially vertical direction.
By extending the wall connecting member 93 horizontally and engaging the slide portion 95 in the gondola guide 171, the moving wall connecting 90 can be moved along the gondola guide 171 and the outward movement of the outer wall surface is restricted. Will be.

  Returning to FIG. 12, the wall-connecting reinforcement brace 91 has an X shape, and includes a metal fitting 92 and a wall connecting member 93 of the upper moving wall connection 90, and a metal fitting 92 and a wall connection of the lower moving wall connection 90. And a member 93.

The gap closing stage 77 is provided above and below the moving wall connecting mechanism 76, and is attached to a metal fitting 771 attached to the building frame 83 of the lower scaffold unit 73 and to the metal fitting 771 so as to be rotatable upward. Stage member 772 provided.
A rubber member 774 is attached to the leading edge of the stage member 772, and when the stage member 772 is horizontal, the gap between the stage member 772 and the outer wall surface 17 is closed.
The stage member 772 is suspended upward by a chain 773, and the stage member 772 can be kept horizontal by the chain 773.

  The lowermost frame 78 includes a base portion 781 extending linearly in a substantially horizontal direction, an arc portion 782 extending in an arc shape upward from both ends of the base portion 781, and a pair of cylindrical main pipes extending from the base portion 781 in a substantially vertical direction. 783 and a secondary pipe 784 extending in a substantially vertical direction from the base portion 781 between the main pipes 783.

The upper end of the main pipe 783 of the lowermost frame 78 is connected to the main pipe 831 at the lower end of the lower scaffold unit 73. The upper end of the secondary pipe 784 of the lowermost frame 78 is connected to the secondary pipe 833 at the lower end of the lower scaffold unit 73.
Further, a sheet 785 is pasted from the lower end of the soundproof panel 82 through the outer peripheral surface of the lowermost frame 78 to the metal fitting 771 of the gap closing stage 77.

Next, a procedure for dismantling the existing building 1 will be described.
In step 1, as shown in FIG. 1, equipment on the R floor as a rooftop floor, a blindfold wall, a frame, and the like are disassembled. Further, the R-floor level existing beam 12 is partly dismantled and the remaining existing beam 12 is used as a temporary beam 63. Further, the existing beam 12 on the outer periphery of the 24th floor level is left, and the existing beam 12 on the inside including the outer wall of the 24th floor and inside the 24th floor level is dismantled.
Further, an outer periphery scaffold 62 supported by the temporary beam 63 is constructed outside the temporary column 20. The procedure for constructing the outer periphery scaffold 62 will be described in detail later.

In step 2, the Telha 65 is mounted on the temporary beam 63 and the overhead traveling crane 66 is mounted below the temporary beam 63. Further, a light-transmitting plate material 64 is attached to the temporary beam 63 to complete the temporary roof 61. Thereby, a dismantling work space surrounded by the temporary roof 61 and the outer periphery scaffolding 62 is formed.
Although not shown, the temporary roof 61 is provided with watering equipment using rainwater and a dry mist device.

In step 3, the floor openings 14 and 15 are formed in the existing slabs 13 of each floor, and the horizontal reaction force receiving members 51 and 52 are installed in the floor openings 14 at the 20th to 23rd floor levels.
Thereafter, the temporary pillar 20 is disposed in the vicinity of the existing pillar 11 on the outer periphery of the existing building 1.

In step 4, the step rod jack 25 is driven to lock the first hammer member 26 on the existing beam 12 at the 23rd floor level, and the temporary pillar 20 is supported on the existing beam 12 on the 23rd floor. Further, the second yoke member 30 is contracted.
Thereafter, the existing pillar 11 on the 23rd floor is cut at the head of the pillar, and the rise including the outer wall of the 23rd floor is dismantled. At this time, the demolition material is moved to the floor opening 15 using the overhead traveling crane 66, and the demolition material is unloaded to the carry-out floor by the Telha 65. The unloading material that has been unloaded is separated from recyclable materials and industrial waste, and then taken out of the field.

In step 5, as shown in FIG. 14, the step rod jack 25 is driven to move upward of the step rod 24.
Thereby, the temporary pillar 20 descend | falls, the temporary roof 61 and the outer periphery scaffold 62 also descend | fall, and the 2nd hammer 30 is located in the 21st floor level height. At this time, the horizontal reaction force receiving members 51 and 52 guide the movement of the temporary pillar 20.
Next, the second punching member 30 is extended, the second punching member 30 is locked to the existing beam 12 at the 21st floor level, and the load of the temporary pillar 20 is supported by the existing beam 12 at the 21st floor.

In step 6, as shown in FIG. 15, the step rod jack 25 is driven, and the first hammering member 26 is slightly moved upward to be retreated from the 23rd floor, which is the object to be dismantled.
Moreover, the horizontal reaction force receiving members 51 and 52 installed at the 23rd floor level are replaced with the 19th floor level.
Next, in the dismantling work space, from the 23rd floor to the rise including the outer wall of the 22nd floor (portion indicated by a broken line in FIG. 15) is dismantled. At this time, the demolition material is moved to the floor opening 15 using the overhead traveling crane 66, and the demolition material is unloaded to the carry-out floor by the Telha 65.

  In step 7, as shown in FIG. 16, the step rod jack 25 is driven to move the first piercing member 26 downward, and is locked to the existing beam 12 at the 22 floor level, and the temporary pillar 20 is moved. It is supported by the existing beam 12 on the 22nd floor. Further, the second yoke member 30 is contracted.

  Hereinafter, the work of steps 5 to 7 is repeated to dismantle every layer and disassemble up to the first floor.

Next, a procedure for constructing the outer periphery scaffold 62 will be described.
First, as shown in FIG. 17, a scaffold unit 70 obtained by dividing the outer periphery scaffold 62 every five spans is assembled on the ground.
Specifically, the gantry 96 is constructed, and the lowermost frame 78, the lower scaffold unit 73, the support frame 71, and the upper scaffold unit 72 are assembled on the gantry 96 for five spans in order from the bottom.

  Next, the gap closing stage 77 is attached to the lower scaffold unit 73, and the stage member 772 of the gap closing stage 77 is rotated upward and retracted.

  Further, the moving wall connecting unit 90 is attached to the three horizontal reinforcing members 81 on the lower end side of the lower scaffold unit 73 where the moving wall connecting mechanism 76 is provided. Further, a moving wall joint 97 having the same structure as that of the moving wall joint 90 is prepared, and this moving wall joint 97 is attached to the remaining horizontal reinforcing member 81.

  Here, the gondola guide 171 is formed only in a portion of the outer wall surface 17 above the third floor level. Therefore, only the wall connecting members 93 of the moving wall connecting members 90 and 97 facing the gondola guide 171 are horizontally arranged and engaged in the gondola guide 171, and the remaining wall connecting members 93 are moved upward. Rotate it back and retract.

  Next, as shown in FIG. 18, the scaffold unit 70 is raised by a crane. Then, since the wall connecting members 93 of the moving wall connecting units 90 and 97 come to face the gondola guide 171 one after another, the wall connecting member 93 is extended horizontally and engaged in the gondola guide 171. Thereby, it is possible to lift the scaffold unit 70 smoothly while preventing the scaffold unit 70 from being unstable due to the influence of the wind.

  After all the wall connecting members 93 are engaged in the gondola guide 171, a gondola guide closing member 98 as shown in FIG. 19 is prepared and the inside of the gondola guide 171 is closed. The gondola guide closing member 98 includes a closing member main body 981 disposed in the gondola guide 171 and a fixing bolt 982 screwed into the closing member main body 981. By tightening the fixing bolt 982, the gondola guide 171 is sandwiched between the front end surface of the fixing bolt 982 and the closing member main body 981.

  Here, when the gondola guide 171 is not provided on the outer wall surface 17, the moving wall joints 90, 97 cannot be attached. Therefore, as shown in FIG. 20, the wheel member 99 is attached to the horizontal reinforcing member 81. According to the wheel member 99, the movement of the scaffold unit 70 in the direction away from the outer wall surface 17 cannot be restricted like the moving wall joints 90 and 97, but the scaffold unit 70 can be moved up and down along the outer wall surface 17. is there.

The scaffold unit 70 is raised as it is, is positioned in the vicinity of the temporary roof 61, and the support frame 71 is placed on the distal end portion of the bracket 67 to support the scaffold unit 70 on the temporary roof 61.
Next, as shown in FIG. 8, the stage member 772 of the gap closing stage 77 is disposed horizontally. In addition, the wall connecting reinforcement brace 91 of the moving wall connecting mechanism 76 is attached to complete the moving wall connecting mechanism 76.
Thereafter, the fixed wall joints 74A to 74D and the suspension wire 75 are attached while removing the moving wall joint 97 and dismantling the outer wall.

  The scaffold unit 70 is lifted in order according to the above procedure, arranged along the outer periphery of the temporary roof 61, and the scaffold unit 70 is connected to each other to construct the outer periphery scaffold 62.

According to this embodiment, there are the following effects.
(1) Since the scaffold unit 70 is assembled on the ground and lifted after the seat 785 and the soundproof panel 82 are attached, it is only necessary to connect the scaffold units 70 at a high place. Because there is no need to attach a frame or external curing sheet, safety can be easily secured.

  (2) Since the frame scaffold 80 is suspended and supported from the temporary roof 61, it is not necessary to change the support position of the frame scaffold 80 throughout the disassembly period, and therefore the disassembly period can be further shortened.

  (3) Since the moving wall joints 90 and 97 that can move along the gondola guide 171 and are restricted from moving outward from the outer wall surface are provided in the scaffold unit 70, the seat 785 and the soundproof panel 82 are provided on the scaffold unit 70. Even if attached, the posture of the scaffold unit 70 can be stably maintained without being affected by wind at high places.

  (4) Since the lower end of the frame scaffold 80 is connected to the temporary roof by the suspension wire 75, even if a part of the frame scaffold 80 is broken, it is possible to prevent a part of the scaffold material from falling.

  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.

1 ... Existing building (structure)
DESCRIPTION OF SYMBOLS 11, 11A ... Existing pillar 12 ... Existing beam 13 ... Existing slab 14, 15 ... Floor opening 16 ... Gondola rail 17 ... Outer wall surface 171 ... Gondola guide 20, 20A ... Temporary pillar 21 ... Column member 22 ... Connecting member 23A ... Horizontal support Rail 23B ... Horizontal support rail 24 ... Step rod 25 ... Step rod jack 26 ... First bolt member 27 ... Handle member 28 ... Support member 29 ... Fitting 30 ... Second bolt member 31 ... Main body 32 ... Locking portion 51 ... Anti-horizontal Force receiving member 52 ... Horizontal reaction force receiving member 53 ... 1st guide part 54 ... 2nd guide part 60 ... Structure dismantling system 61 ... Temporary roof 62 ... Perimeter scaffold (temporary wall)
63 ... Temporary beam 64 ... Plate material 65 ... Telha 66 ... Overhead traveling crane 67 ... Bracket 70 ... Scaffolding unit 71 ... Support frame 72 ... Upper scaffold unit 73 ... Lower scaffold unit 74A-74D ... Fixed wall connection 75 ... Suspension wire 76 ... Movement Wall connection mechanism 77 ... Gap closing stage 78 ... Bottom frame 80 ... Frame scaffolding 81 ... Horizontal reinforcing member 82 ... Soundproof panel 83 ... Building frame 84 ... Fabric board 85 ... Brace 86 ... Skirting board 87 ... Brace 90 ... Moving wall connection 91 ... Reinforcement brace 92 ... Hardware 93 ... Wall connecting member 94 ... Wall connecting body 95 ... Sliding part 96 ... Stand base 97 ... Moving wall connecting 98 ... Gondola guide closing member 99 ... Wheel member 211 ... Lower 212 ... Central part 213 ... Upper 214 ... through-hole 711 ... girder member 712 ... connecting member 713 ... main pipe 714 ... sub pipe 741, 742, 743 ... Wall connecting and fixing piece 771 ... Metal fitting 772 ... Stage member 773 ... Chain 781 ... Base portion 782 ... Arc portion 783 ... Main pipe 784 ... Sub pipe 785 ... Seat 831 ... Main pipe 832 ... Connection pipe 833 ... Sub pipe 834 ... Reinforcement Pipe 835 ... Connecting pin 836 ... Bolt 981 ... Closure member body 982 ... Fixing bolt

Claims (4)

A structure dismantling system for disassembling a structure,
A temporary roof covering the upper surface of a part of the existing beam on the predetermined floor of the structure;
A temporary column supported by the lower floor than the predetermined floor to support the temporary roof, and a temporary wall provided along the outer periphery of the temporary roof,
The temporary structure wall is constructed by connecting a plurality of scaffold units made of frame scaffolds.   The structure demolition system according to claim 1, wherein the frame scaffold is suspended and supported from the temporary roof. A gondola guide extending in a substantially vertical direction is provided on the outer wall surface of the structure,
2. The scaffold unit is provided with a moving wall joint that engages with the gondola guide and is movable along the gondola guide and is restricted from moving outwardly from the outer wall surface. Or the structure dismantling system of 2.   The structure dismantling system according to any one of claims 1 to 3, wherein a lower end portion of the frame scaffold is connected to the temporary roof by a hanging wire.

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