CN103790398A - Large concrete structural body pre-supporting-free demolition method - Google Patents
Large concrete structural body pre-supporting-free demolition method Download PDFInfo
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- CN103790398A CN103790398A CN201410079614.3A CN201410079614A CN103790398A CN 103790398 A CN103790398 A CN 103790398A CN 201410079614 A CN201410079614 A CN 201410079614A CN 103790398 A CN103790398 A CN 103790398A
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- cover plate
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- askew
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Abstract
The invention relates to the field of concrete structure demolition, in particular to a large concrete structural body pre-supporting-free demolition method and aims at providing a large concrete structural body pre-supporting-free demolition method which is adopted to cut, break down and demolish concrete buildings without pre-installation of a large concrete demolition supporting frame. In the large concrete structural body pre-supporting-free demolition method, a large concrete structural body comprises a cover plate, a cross beam for supporting the cover plate and a supporting column for supporting the cross beam. The large concrete structural body pre-supporting-free demolition method comprises the following steps of (a) selecting the cover plate required to be demolished, performing oblique cutting on the cover plate in the cover plate thickness direction and hoisting the cover plate through a hoisting device; (b) selecting the cross beam required to be demolished and performing oblique cutting on the cross beam in the cross beam thickness direction and hoisting the cross beam through the hoisting device; (c) demolishing the supporting column. The large concrete structural body pre-supporting-free demolition method is easy to implement, practical and effective and especially suitable for the large concrete structure demolition construction.
Description
Technical field
The present invention relates to concrete structure method for dismounting field, especially a kind of large-sized concrete structure is without the pre-method for dismounting that supports.
Background technology
For concrete constructions such as factory buildings, in the time that needs are removed, the technological means adopting is at present first to build unsettled to cover plate, the crossbeam etc. of concrete structure member to be carried out to the bracing frame of powerful support, and then cover plate, crossbeam etc. are cut and removed.Owing to there being the existence of bracing frame, the member such as cover plate, crossbeam that the has lost support force support of frame that can be supported, is unlikely on direct Crater, thereby can be safer orderly carries out dismounting work.
But such dismounting mode is built large-area bracing frame before dismounting just because of needs, thereby can consume a large amount of time and manpower.In addition, the facilities such as bracing frame etc. have been full of the whole underground space, also allow constructor's activity space greatly limited, are not easy to operation and remove.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind ofly removes the bracing frame large-sized concrete structure that can cut concrete construction, decompose and remove without pre-support method for dismounting without large-sized concrete is installed in advance.
The technical solution adopted for the present invention to solve the technical problems is: large-sized concrete structure is without the pre-method for dismounting that supports, described large-sized concrete structure comprises cover plate, for supporting the crossbeam of cover plate, support post for supporting traverse, comprise the following steps:
A, the selected cover plate that need to be removed, and selected cover plate is cut sth. askew and cut along the thickness direction of cover plate, cut sth. askew and cut the formed cover plate face of cutting sth. askew the end face of cover plate is isolated to end face on cover plate, the bottom surface of cover plate is isolated cover plate bottom surface by the cover plate face of cutting sth. askew, and the area of end face is greater than the area of cover plate bottom surface on described cover plate, and by hanging device, described cover plate is hung;
B, the selected crossbeam that need to be removed, and selected crossbeam is cut sth. askew and cut along the thickness direction of crossbeam, cut sth. askew and cut formed crossbeam oblique cut surface the end face of crossbeam is isolated to end face on crossbeam, the bottom surface of crossbeam is isolated crossbeam bottom surface by crossbeam oblique cut surface, and the area of end face is greater than the area of crossbeam bottom surface on described crossbeam, and by hanging device, described crossbeam is hung;
C, support post is removed.
Further, forming the cut sth. askew thickness range of cutting seam of face of step a cover plate is 7～15mm.
Further, the cut sth. askew angular range of face and horizontal plane of cover plate draws by simulation analysis.
Further, forming the cut sth. askew thickness range of cutting seam of face of step b middle cross beam is 7～15mm.
Further, the angular range of crossbeam oblique cut surface and horizontal plane draws by simulation analysis.
The invention has the beneficial effects as follows: inventive point of the present invention is that after utilizing cover plate and crossbeam being cut sth. askew and cut, the face of cutting sth. askew forming can continue to allow the member that is about to be walked by handling keep the principle supporting.Concretely, cut exactly the oblique cut surface of rear formation by cutting sth. askew, unsupported cover plate or crossbeam are continued to support, until hanging device is hung away.This employing dismounting mode of cutting of cutting sth. askew, the ingenious mechanical relationship having utilized between cover plate, crossbeam and adjacent members, is not using under the prerequisite of bracing frame, allows again the member that need be hung away holding position stable after cut.In addition, such method allows user of service's activity space greatly increase, convenient a lot of when needing to build bracing frame than in the past.The present invention is easy to implement, and practicability and effectiveness is especially applicable in the middle of the Demolition Construction of large-sized concrete structure.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention removes front large-sized concrete structure.
Fig. 2 is the schematic diagram of the face of cutting sth. askew of the present invention.
Fig. 3 is the schematic diagram after cutting of the present invention.
Fig. 4 is the schematic diagram that cover plate of the present invention is hung after cutting.
Fig. 5 is the schematic diagram that crossbeam of the present invention is hung after cutting.
Fig. 6 is the present invention at the schematic diagram of removing while finishing surplus support post only.
In figure, be labeled as: cut sth. askew end face 22 on face 13, crossbeam 2, crossbeam bottom surface 21, crossbeam, crossbeam oblique cut surface 23, support post 3 of end face 12, cover plate on cover plate 1, cover plate bottom surface 11, cover plate.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Large-sized concrete structure is as shown in Figures 1 to 6 without the pre-method for dismounting that supports, and described large-sized concrete structure comprises cover plate 1, for supporting the crossbeam 2 of cover plate 1, support post 3 for supporting traverse 2, comprises the following steps:
A, the selected cover plate 1 that need to be removed, and selected cover plate 1 is cut sth. askew and cut along the thickness direction of cover plate 1, cut sth. askew and cut the formed cover plate face 13 of cutting sth. askew the end face of cover plate 1 is isolated to end face 12 on cover plate, the bottom surface of cover plate 1 is isolated cover plate bottom surface 11 by the cover plate face 13 of cutting sth. askew, and the area of end face 12 is greater than the area of cover plate bottom surface 11 on described cover plate, and by hanging device, described cover plate 1 is hung;
B, the selected crossbeam 2 that need to be removed, and selected crossbeam 2 is cut sth. askew and cut along the thickness direction of crossbeam 2, cut sth. askew and cut formed crossbeam oblique cut surface 23 end face of crossbeam 2 is isolated to end face 22 on crossbeam, the bottom surface of crossbeam 2 is isolated crossbeam bottom surface 21 by crossbeam oblique cut surface 23, and the area of end face 22 is greater than the area of crossbeam bottom surface 21 on described crossbeam, and by hanging device, described crossbeam 2 is hung;
C, support post 3 is removed.
As shown in Figure 1, in the time utilizing the present invention to remove large-sized concrete structure, be first that cover plate 1 is removed, be secondly crossbeam 2 is removed, be finally only and remove support post 3.The method of " cutting sth. askew and cut " is innovative point of the present invention, refer in the time of cutting cover plate 1 or crossbeam 2, cutting seam is not vertical with horizontal plane, and guaranteeing to cut seaming and cutting cuts after cover plate 1 or crossbeam 2, the area of the upper surface of cover plate 1 or crossbeam 2 is greater than the area of soffit, in conjunction with Fig. 3 and Fig. 5 specifically, allow exactly the area of end face 12 on cover plate be greater than the area of cover plate bottom surface 11, and on crossbeam, the area of end face 22 is greater than the area of crossbeam bottom surface 21.The cover plate 1 that inverted trapezoidal platform structure guarantee has only in this way been cut and the support of crossbeam 2 bevelled support forces.The present invention has certain angle of slope by cover plate face 13 and the crossbeam oblique cut surface 23 of cutting sth. askew with horizontal plane, allow the cover plate face 13 of cutting sth. askew support cover plate 1 thereby realized, allow crossbeam oblique cut surface 23 support crossbeam 2, thereby save the operation of building bracing frame, not only save time and manpower, also allowed Demolition Construction personnel's activity space be guaranteed.
Sewing on specific to cutting, in conjunction with the experience of practice, the cut sth. askew thickness range of cutting seam of face 13 or crossbeam oblique cut surface 23 of described cover plate is preferably 7～15mm.Can draw in conjunction with Fig. 3 and Fig. 5: when cutting seam too little (being less than 7mm), be unfavorable for choosing of cutting tool, be also not easy to realize in practice; When too large (being greater than 15mm) of cutting seam, may occur that the cover plate face 13 of cutting sth. askew cannot provide support power for cover plate 1, and or crossbeam oblique cut surface 23 cannot provide support power for crossbeam 2, thereby cause cover plate 1 or the direct born danger of crossbeam 2.
In addition, in order to make the angle of inclination of cutting seam of the present invention more reasonable, for some relatively large projects, can cover plate be cut sth. askew after face 13 calculates with the angular range of angular range, crossbeam oblique cut surface 23 and the horizontal plane of horizontal plane and be determined.Concrete, the cover plate 1 that needs are removed or mechanics parameter, the materialogy parameter etc. of crossbeam 2 peripheral structures input simulation analysis software, calculate more rational angle of inclination, can construct.Such science is calculated and is also allowed the present invention's safety factor in use be improved, and makes user of service safer.
Claims (5)
1. large-sized concrete structure is without the pre-method for dismounting that supports, and described large-sized concrete structure comprises cover plate (1), for supporting the crossbeam (2) of cover plate (1), support post (3) for supporting traverse (2), it is characterized in that, comprises the following steps:
A, the selected cover plate (1) that need to be removed, and selected cover plate (1) is cut sth. askew and cut along the thickness direction of cover plate (1), cut sth. askew and cut the formed cover plate face (13) of cutting sth. askew the end face of cover plate (1) is isolated to end face on cover plate (12), the bottom surface of cover plate (1) is isolated cover plate bottom surface (11) by the cover plate face (13) of cutting sth. askew, and the area of end face on described cover plate (12) is greater than the area of cover plate bottom surface (11), and by hanging device, described cover plate (1) is hung;
B, the selected crossbeam (2) that need to be removed, and selected crossbeam (2) is cut sth. askew and cut along the thickness direction of crossbeam (2), cut sth. askew and cut formed crossbeam oblique cut surface (23) end face of crossbeam (2) is isolated to end face on crossbeam (22), the bottom surface of crossbeam (2) is isolated crossbeam bottom surface (21) by crossbeam oblique cut surface (23), and the area of end face on described crossbeam (22) is greater than the area of crossbeam bottom surface (21), and by hanging device, described crossbeam (2) is hung;
C, support post (3) is removed.
2. large-sized concrete structure as claimed in claim 1, without the pre-method for dismounting that supports, is characterized in that: forming the cut sth. askew thickness range of cutting seam of face (13) of step a cover plate is 7～15mm.
3. large-sized concrete structure as claimed in claim 2, without the pre-method for dismounting that supports, is characterized in that: the cover plate face (13) of cutting sth. askew draws by simulation analysis with the angular range of horizontal plane.
4. the large-sized concrete structure as described in claim 1,2 or 3, without the pre-method for dismounting that supports, is characterized in that: forming the cut sth. askew thickness range of cutting seam of face (23) of step b middle cross beam is 7～15mm.
5. large-sized concrete structure as claimed in claim 4, without the pre-method for dismounting that supports, is characterized in that: crossbeam oblique cut surface (23) draws by simulation analysis with the angular range of horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410079614.3A CN103790398B (en) | 2014-03-06 | 2014-03-06 | Large-sized concrete structure is without supporting method for dismounting in advance |
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| CN201410079614.3A CN103790398B (en) | 2014-03-06 | 2014-03-06 | Large-sized concrete structure is without supporting method for dismounting in advance |
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| CN103790398A true CN103790398A (en) | 2014-05-14 |
| CN103790398B CN103790398B (en) | 2016-06-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569376A (en) * | 2015-12-17 | 2016-05-11 | 上海建工一建集团有限公司 | Demolition construction method for building wall |
| CN108166770A (en) * | 2017-11-27 | 2018-06-15 | 广东精特建设工程有限公司 | Exempt from a kind of cutting method of support about the cutting of building structure column |
| CN109339483A (en) * | 2018-10-24 | 2019-02-15 | 中国二十冶集团有限公司 | Underground fuel tank dismantles construction method |
| CN109723233A (en) * | 2018-12-28 | 2019-05-07 | 中国二十冶集团有限公司 | Buddha's warrior attendant chain fly-cutting concrete construction method |
| CN111576439A (en) * | 2020-05-26 | 2020-08-25 | 中铁十二局集团有限公司 | Concrete support dismantling prestressed support and construction method thereof |
| CN113106980A (en) * | 2021-03-16 | 2021-07-13 | 中煤江南建设发展集团有限公司 | Method for dismantling old beam plate in foundation pit supporting structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06229130A (en) * | 1993-02-03 | 1994-08-16 | Taisei Corp | Demolition of steel framed building by explosive |
| CN1511216A (en) * | 2001-05-22 | 2004-07-07 | 西松建设株式会社 | Building demolishing method |
| JP2012001903A (en) * | 2010-06-14 | 2012-01-05 | Ohbayashi Corp | Demolition method for building |
| JP2013104220A (en) * | 2011-11-14 | 2013-05-30 | Toda Constr Co Ltd | Slab demolition method and demolition device |
-
2014
- 2014-03-06 CN CN201410079614.3A patent/CN103790398B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06229130A (en) * | 1993-02-03 | 1994-08-16 | Taisei Corp | Demolition of steel framed building by explosive |
| CN1511216A (en) * | 2001-05-22 | 2004-07-07 | 西松建设株式会社 | Building demolishing method |
| JP2012001903A (en) * | 2010-06-14 | 2012-01-05 | Ohbayashi Corp | Demolition method for building |
| JP2013104220A (en) * | 2011-11-14 | 2013-05-30 | Toda Constr Co Ltd | Slab demolition method and demolition device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569376A (en) * | 2015-12-17 | 2016-05-11 | 上海建工一建集团有限公司 | Demolition construction method for building wall |
| CN108166770A (en) * | 2017-11-27 | 2018-06-15 | 广东精特建设工程有限公司 | Exempt from a kind of cutting method of support about the cutting of building structure column |
| CN109339483A (en) * | 2018-10-24 | 2019-02-15 | 中国二十冶集团有限公司 | Underground fuel tank dismantles construction method |
| CN109723233A (en) * | 2018-12-28 | 2019-05-07 | 中国二十冶集团有限公司 | Buddha's warrior attendant chain fly-cutting concrete construction method |
| CN111576439A (en) * | 2020-05-26 | 2020-08-25 | 中铁十二局集团有限公司 | Concrete support dismantling prestressed support and construction method thereof |
| CN113106980A (en) * | 2021-03-16 | 2021-07-13 | 中煤江南建设发展集团有限公司 | Method for dismantling old beam plate in foundation pit supporting structure |
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| Publication number | Publication date |
|---|---|
| CN103790398B (en) | 2016-06-08 |
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