JP6508959B2 - Demolition system and demolition method - Google PatentsDemolition system and demolition method Download PDF
- Publication number
- JP6508959B2 JP6508959B2 JP2015023569A JP2015023569A JP6508959B2 JP 6508959 B2 JP6508959 B2 JP 6508959B2 JP 2015023569 A JP2015023569 A JP 2015023569A JP 2015023569 A JP2015023569 A JP 2015023569A JP 6508959 B2 JP6508959 B2 JP 6508959B2
- Prior art keywords
- support column
- reaction force
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- 238000006243 chemical reactions Methods 0.000 claims description 95
- 238000009434 installation Methods 0.000 claims description 60
- 239000000725 suspensions Substances 0.000 claims description 14
- 230000003028 elevating Effects 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 7
- 240000004282 Grewia occidentalis Species 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
As a method of dismantling a building, there are the following methods.
For example, there is a method of installing a mast along the existing building from the ground surface, attaching a tower crane to the mast, and unloading the demolition material by the tower crane. In this case, the mast is temporarily fixed to the structure of the existing building, and is lifted down as the building is disassembled (see Patent Document 1).
In this dismantling method, when lifting up the existing floor on which the crane is installed, a reaction force member is attached to the existing column, a reaction force is applied to the reaction force member, and the existing floor on which the crane is installed is suspended. This dismantling method eliminates the need for a large mast and can reduce construction costs.
Therefore, since the reaction force member can be temporarily placed immediately below the support column to be disassembled, it is not necessary to temporarily place the reaction force member away from the support column as in the conventional case, and disassembly can be performed in a short construction period.
Therefore, even if the crane installation floor is suspended and supported from the reaction force member attached to the upper end of the support column, the slide beams are connected by the connection pins, so the slide beams fall over while maintaining the distance between the slide beams. It can prevent and can take reaction force from a support pillar stably.
The existing building 1 shown in FIGS. 1 and 2 is a building of n (n is a natural number) floor and has a square shape in plan view. Hereinafter, a direction along one side of the existing building 1 is taken as an X direction, and a direction substantially orthogonal to the X direction is taken as a Y direction.
The existing building 1 is disassembled using the disassembling system 2 described below.
Specifically, the crane installation floor 20 extends from the existing beam 12A supporting the existing floor 14A having a size of 2 spans × 2 spans, the existing beam 14A, and supports the existing floor 14A. And the existing beam 13A.
The working radius of the crane 30 (indicated by a solid line P in FIG. 1) accommodates the entire existing building 1.
Specifically, the pair of large pull members 21 extend substantially parallel to each other along the X direction, and are bridged between the existing beams 12A that connect the support columns 11A.
The base 31 of the crane 30 is installed on the pair of joist 22, and the base 31 of the crane 30 can travel in the Y direction along the joist 22.
The reaction beam 60 is formed by arranging a pair of channel steels 601 back to back and connecting them with a plate 602. In the center of the reaction beam 60 in the longitudinal direction, a fixing head 603 to which the hanging material 42 is fixed is provided. The reaction beam 60 and the connection beam 61 are connected in a rectangular frame shape.
In the pair of slide beams 62, the height position of the pipe 661 is different, whereby the pipes 661 are stacked vertically and arranged in a state where the pair of slide beams 62 are separated by a predetermined distance with the suspending member 42 interposed therebetween. It is supposed to be
The connecting pin 53 is inserted into the pipe 661 of the slide beam 62, whereby the pair of slide beams 62 maintain a distance from one another.
The locking device 43 is provided in the through hole 23 of the crane installation floor 20, and has a rectangular frame shape surrounding the support column 11A.
As shown in FIG. 5, the locking device 43 includes a cross beam 70 disposed below the existing beam 12A associated with the support column 11A, and a load beam disposed above the existing beam 12A associated with the support column 11A. And 80 connecting members 90 which connect the cross beam 70 and the loading beam 80.
The barrel device 72 includes a barrel 721 provided so as to be able to be stored in the barrel beam body 71, and a hydraulic jack 722 for projecting and retracting the barrel 721.
The base end side of the hydraulic jack 722 is supported by a pin 723 so as to be rotatable in a horizontal direction as a rotation axis by the bolt body 71. As a result, it is possible to follow the vertical and horizontal swings of the yoke 721 to some extent.
The anti-vibration guide 73 is interposed between a guide main body 731 fixed to the cross beam main body 71, a guide portion 732 slidably provided on the guide main body 731, and the guide main body 731 and the guide portion 732. And the backfill block 733.
In the steady rest guide 73, the projection dimension of the guide portion 732 can be adjusted in accordance with the size of the support column 11A by changing the thickness of the backfill block 733.
In step S1, as shown in FIG. 14, the crane 30 is installed on the roof floor.
First, an external scaffold 50 is constructed around the existing building 1. Next, the existing penthouse 3 on the roof floor of the existing building 1 is dismantled, and a large pulling material 21 and a joist 22 are placed on the existing floor 14 on the roof floor, and a crane is placed on the joist 22 Install 30
As also shown in FIG. 12, a through hole 23 is formed in the existing floor 14 around the existing column 11 that is to be the support column 11A, and the locking device 43 and the lifting jack 44 are attached to the through hole 23.
Further, a temporary column 46 having a predetermined height is installed immediately above the existing column 11 to be the support column 11A, and a reaction force member 41 is attached on the temporary column 46. The reaction force member 41 and the lifting jack 44 Are connected by a hanging material 42.
A disassembly material is unloaded by a crane 30 while disassembling with the disassembly machine 47 by lifting the disassembly machine 47 on the roof floor. At this time, the beam joint portion 15 protruding from the n-th floor support pillar 11A is left. Moreover, according to the progress of dismantling construction, the external scaffolding 50 is dismantled suitably.
The existing beam 12A of the crane installation floor 20 corresponding to the support column 11A is cut, and the edge between the crane installation floor 20 and the support column 11A is cut. Thus, the crane installation floor 20 is suspended and supported from the support column 11A via the lifting device 40.
Then, the yoke 721 of the locking device 43 is locked to the beam joint portion 15 of the nth floor of the support column 11A. Thus, the crane installation floor 20 is supported by the n floor level of the support column 11A.
The reaction force member 41 is lifted and removed by the crane 30, and then the upper portions of the temporary column 46 and the support column 11A are cut and removed, and thereafter, the reaction force member 41 is mounted on the remaining support column 11A.
The operation of this step S6 will be described in detail later.
The dismantling material is unloaded by the crane 30 while disassembling with the anti-weighting machine 47. At this time, the beam joint portion 15 protruding from the (n-1) floor support column 11A is left. Moreover, according to the progress of dismantling construction, the external scaffolding 50 is dismantled suitably.
The elevator jacks 44 are driven to raise the crane installation floor 20 slightly along the support columns 11A to suspend and support the crane installation floor 20 from the support columns 11A. In this state, the rod 721 of the locking device 43 is retracted.
In step S11, the reaction force member lifting jig 45 is lifted by the crane 30. Specifically, the lifting jig body 51 is lifted by the crane 30. Then, as shown in FIG. 21, the connection pin 53 of the reaction force member lifting jig 45 is pulled out of the pipe 661 of the slide beam 62, and the pair of slide beams 62 can move. Further, the reaction force member 41 is suspended and supported via the suspension wire 52.
In step S13, the reaction force member 41 is lowered directly below by the crane 30 and placed on the load beam 80 of the locking device 43, as indicated by the white arrow in FIG. At this time, the support post 11A is inserted into the inside of the reaction force member 41.
In step S15, the reaction force member lifting jig 45 is lifted by the crane 30, and the reaction force member 41 is positioned immediately above the support column 11A.
In step S16, the pair of slide beams 62 are moved inward, and the pipes 661 of the slide beams 62 are overlapped and disposed. As a result, the contact portion 641 of the centering guide 64 contacts the side surface of the support column 11A, and the lower surface of the slide beam 62 contacts the upper surface of the support column 11A.
(1) Since the reaction force member 41 can be temporarily placed immediately below the support column 11A to be disassembled, it is not necessary to temporarily place the reaction force member 41 at a position away from the support column to be disassembled as in the prior art. Can disassemble the structure.
For example, in the present embodiment, the base 31 of the crane 30 is directly installed on the crane installation floor 20 via the large pulling member 21 and the joist 22. However, the present invention is not limited thereto. A small mast may be installed and the base 31 of the crane 30 may be installed at the top of the small mast.
44: lifting jack, 45: reaction force member lifting jig, 46: temporary column, 47: weight lifting machine 50: external scaffolding, 51: jig body, 52: suspension wire, 53: connection pin 60, reaction force beam, DESCRIPTION OF SYMBOLS 61 ... Connection beam 62 ... Slide beam, 63 ... Slide beam main body 64 ... Guide, 65 ... Engagement part, 66 ... Pipe bracket 70 ... Pivot beam, 71 ... Beam main body, 72 ... Pivot apparatus, 73 ... Anti-vibration guide 80 ... Loading beam 81 Angle steel 90 Connection member 91 Fixing plate 92 Fixing plate 93 PC steel wire 601 Channel steel 602 Plate 603 Fixing head 604 Pulley 631 Long hole 641: Abutment portion, 642: Guide main body 661: Pipe, 662: Support piece 721: Pinhole, 722: Hydraulic jack, 723: Pin 731: Guide main body, 732: Guide portion, 733: Back loading Click P ... crane working radius
- Dismantling system for dismantling existing structures,
A crane installation floor including a part of an existing floor on a predetermined floor of an existing structure, a support column which is an existing pillar supporting the crane installation floor, a crane installed on the crane installation floor, and the crane installation floor And elevating means for lowering the support along the support column,
The elevating device is provided with a reaction force member attached to the upper end of the support column, a suspending member attached to the reaction force member, and a locking device provided on the crane installation floor and capable of being locked to the support column And an elevating jack provided on the locking device to pull the suspension.
The reaction force member is capable of moving along a pair of reaction beams substantially parallel to each other, a connection beam connecting the pair of reaction beams, and the upper surface of the support column along the reaction beam. And a pair of slide beams capable of abutting on side surfaces ,
The locking device comprises a tapping device arranged below the crane installation floor,
The dismantling system according to the present invention is characterized in that the bolt device projects and retracts a lock that can be locked to the beam joint portion of the support column .
- Each of the pair of slide beams includes a vertically extending cylindrical pipe.
The disassembling system according to claim 1, wherein the connection pin can be inserted in a state in which the pipes of the slide beams are stacked one on top of the other.
- It further comprises a reaction force member lifting jig capable of suspending and supporting the reaction force member by the crane ,
The reaction force member suspension jig includes a suspension jig main body suspended and supported by the crane, a suspension wire having a predetermined length for connecting the suspension jig main body and the reaction force member, and the suspension And a connecting pin suspended from the lowering jig body,
The disassembling system according to claim 2, wherein the connection pin is inserted into a pipe of the slide beam.
- A dismantling method for dismantling an existing structure using the dismantling system according to any one of claims 1 to 3,
A first step of installing a crane on the crane installation floor, including a part of the existing floor on a predetermined floor of the existing structure as a crane installation floor and using an existing column supporting the crane installation floor as a support column;
A second step of attaching the lifting device;
Using the crane, and a third step of dismantling the crane installation floor of the predetermined floor, before Symbol support posts, and a portion excluding the beam joint portion of the support column,
The hook of the locking device is retracted and the lifting jack of the lifting device is driven to lower the crane installation floor along the support column, and then the hook of the locking device is protruded to support the support column A fourth step of locking the beam joint portion of
The reaction force member of the lifting device is lifted by the crane, the slide beam of the reaction force member is moved and pulled away from the upper surface and the side surface of the support column, and in this state, the reaction force member is suspended and the locking A fifth step of mounting on the apparatus;
A sixth step of removing the upper portion of the support column;
A seventh step of lifting the reaction force member by the crane and moving the slide beam to abut on the upper surface and the side surface of the support column;
And an eighth step of repeating the third to seventh steps.
Priority Applications (1)
|Application Number||Priority Date||Filing Date||Title|
|JP2015023569A JP6508959B2 (en)||2015-02-09||2015-02-09||Demolition system and demolition method|
Applications Claiming Priority (1)
|Application Number||Priority Date||Filing Date||Title|
|JP2015023569A JP6508959B2 (en)||2015-02-09||2015-02-09||Demolition system and demolition method|
|Publication Number||Publication Date|
|JP2016145497A JP2016145497A (en)||2016-08-12|
|JP6508959B2 true JP6508959B2 (en)||2019-05-08|
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|Application Number||Title||Priority Date||Filing Date|
|JP2015023569A Active JP6508959B2 (en)||2015-02-09||2015-02-09||Demolition system and demolition method|
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|JP (1)||JP6508959B2 (en)|
Family Cites Families (3)
|Publication number||Priority date||Publication date||Assignee||Title|
|JPH07122288B2 (en) *||1988-03-12||1995-12-25||道夫 倉持||Assembly and dismantling method of multi-story building using self-lifting jack-up device|
|JPH05209465A (en) *||1992-01-30||1993-08-20||Fujita Corp||Climbing method and device of rod for suspension lifting in lift up process|
|JPH05280199A (en) *||1992-04-01||1993-10-26||Fujita Corp||Climbing method for lift-up suspension rod in lift-up construction method|
- 2015-02-09 JP JP2015023569A patent/JP6508959B2/en active Active
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