CN101936075A - Blasting method for dismantling frame structure building in situ - Google Patents
Blasting method for dismantling frame structure building in situ Download PDFInfo
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- CN101936075A CN101936075A CN2010102597589A CN201010259758A CN101936075A CN 101936075 A CN101936075 A CN 101936075A CN 2010102597589 A CN2010102597589 A CN 2010102597589A CN 201010259758 A CN201010259758 A CN 201010259758A CN 101936075 A CN101936075 A CN 101936075A
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Abstract
The invention relates to a blasting method adopted in a process for demolishing a building, in particular to a blasting method for dismantling a frame structure building in situ. The method comprises the following steps of: 1, placing explosive on all upright posts of a to-be-blasted floor; and 2, detonating the explosive from top to bottom layer by layer to blow down the upright posts. The blasting method for dismantling the frame structure building in situ using the technical scheme of the invention has the advantages of safe and controllable disassembling process and small vibration and impact effect.
Description
Technical field
The present invention relates to a kind of blasting method, be specifically related to a kind of blasting method of original place disintegration building adopting in the building enforcement demolishing process.
Background technology
In recent years, along with the generally raising of fast development of national economy and living standards of the people, the upsurge that has all started reconstruction of the old city town in all parts of the country.Because demolition blasting is low than traditional artificial dismounting mode cost, efficient is high, old building is generally all adopted the mode of demolition blasting.
Many buildings are limited because of peripheral place, and common demolition blasting usually causes the destruction of surrounding buildings thing easily.Therefore for fear of building collapsing compression failure facility on every side, the blasting methods of adopting for the original place disintegration more, concrete technology is that whole load-bearing pillars is begun the enough height of explosion from the bottom, the binding site of column top and beam is cloth hole explosion simultaneously, building is under the self gravitation effect, impact ground and disintegrate in the original place, as shown in Figure 3, structure demolition point 33 in junction that column bottom and column top and beam are propped up in load-bearing:
Though adopt this kind blasting method can reach the purpose of disintegrating and build in the original place to a certain extent, still be faced with some following problems:
1, when the floor of brick structure building is integrated poured concrete, adopt this kind blasting method, be very easy to occur such situation, though the building bottom is gone up, to sit under the reinforced concrete structure integral body on it and do not cave in, some cracks appear, cause building to become the dangerous building of n-1 layer by the n layer, follow-up dismounting work will become abnormally dangerous and difficult.
2, this blasting method, mainly be by building under the self gravitation effect, impact ground and disintegrate.Upper building with the impact ground of integral body, produces bigger earth shock effect and bigger impact force after the bottom support post is destroyed, bigger vibrations and shock effect may endanger the safety of the peripheral construction of structures in quick-fried district.
3, as structures such as basements, adopt this blasting method, building may take place topple over.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of demolishing process safety, controlled, the blasting method of the original place disintegration frame construction building that vibrations and shock effect are little.
In order to solve the problems of the technologies described above, the invention provides a kind of blasting method of original place disintegration frame construction building, include following steps:
1) treating to settle explosive on all columns of explosion floor;
2) ignition charge successively from top to bottom, the demolition column.
As preferred version, consider that non bearing structures such as body of wall between the building column, stair may be clipped in after the column explosion between the floor of two floors, stress equalization when floor is stacked, avoid the brick slag to destroy flooring, and this destruction handed on, before settling explosive,, and clean out earlier with whole pre-demolitions of non bearing structure such as the body of wall between the building column, stair.
As preferred version, the floor of considering the blasting process upper strata can be to the roof and the column of one deck produce shock loading down, for avoiding the issuable shock loading stack of continuous demolition, when igniting the column of n-1 layer, it is also static to wait for that the above structure of n layer folded the top floor of falling the n-1 layer.
Adopt the blasting method of the original place disintegration frame construction building of the technical program to have following characteristics: 1, because the method for the top-down column of explosion is successively adopted in explosion, floor and beam be stack successively from top to down, floor constantly reduces and descends, until all floors ground bottom that is added to, the situation that building does not collapse can not appear in the process safety of explosion, controlled; 2, because the method for the top-down column of explosion is successively adopted in explosion, building single destructiveness is little, and the earth shock effect and the impact force of generation are less, can avoid the destruction to surrounding building preferably; 3, because the method for the top-down column of explosion is successively adopted in explosion, the building bottom support is not carried out direct explosion, for the isostructural building of basement is arranged, blasting process can avoid building to topple over.
Description of drawings
Fig. 1 is the blow-up point position view of the original place disintegration frame construction building blasting method of the embodiment of the invention;
Fig. 2 is the schematic diagram after the original place disintegration frame construction building blasting method explosion of the embodiment of the invention;
Fig. 3 is original original place disintegration frame construction blow-up point position view.
The specific embodiment
Below in conjunction with drawings and Examples technical solution of the present invention is further specified:
The invention provides a kind of blasting method of original place disintegration frame construction building, specifically comprise following step:
1), and cleans out with whole pre-demolitions of non bearing structure such as the body of wall between the building column, stair.
2) on all columns of building, settle explosive and detonator igniter.
3) successively ignite explosive on the column from top to bottom, with the demolition upright supports.Control the detonator time delay of each layer during this time, treat the upper strata floor stack lower floor's floor and static after explosion lower floor column again.
As depicted in figs. 1 and 2, treat demolition of buildings underground 2 floor of 6 floor on the ground, be reinforced concrete frame structure for one of Chongqing commercial centre.Because building surrounding enviroment complexity, and this building has the important structure thing for underground 2 layers, need be protected.Therefore can only take the mode of original place disintegration demolition blasting.
Be the stable of protection basement structure, determine that explosion highly on the ground 2～6 layers, keeps the support of 1 layer of structure as superstructure, and the impact force when cushioning the superstructure slump.Main operational sequence is as follows:
1) with 11 bodies of wall of 2～6 layers of all column, stair, the whole pre-demolitions of non bearing structure, and complete liquidation is clean.
2) on 2～6 layers of all column 11 of building, settle explosive and detonator igniter.
3) during explosion, the quick-fried column 11 that removes the 6th layer of elder generation, make the 6th layer floor 12 smooth-going overlaying on the 5th layer of top floor 11, its weight is by the 5th layer of top floor and column carrying, treat this stack the action finish static after, begin the explosion of one deck column 11 down, with top floor 12 of one deck under reducing and the shock loading that column 11 bears.Mode like this, the column 11 not explosions of 11,1 layers on the column of 6～2 layers of demolition blastings are successively born the quick-fried back weight on 5 layers on top with 1 layer top floor 12 and column 11, are not destroyed to guarantee underground 2 layers.
4) after the explosion, each floor plate and 1 layer of column adopt mechanical system to handle and get final product.
Above-described only is preferred implementation of the present invention; should be understood that; for a person skilled in the art; under the prerequisite that does not break away from blasting method of the present invention; can also make and somely not need to carry out creative work with regard to achievable improvement; these also should be considered as protection scope of the present invention, and these can not influence effect of the invention process and practical applicability.
Claims (3)
1. the blasting method of an original place disintegration frame construction building is characterized in that, includes following steps:
1) treating to settle explosive on all columns of explosion floor;
2) ignition charge successively from top to bottom, the demolition column.
2. the blasting method of disintegration frame construction building in original place according to claim 1 is characterized in that: before settling explosive, earlier with whole pre-demolitions of non bearing structure such as the body of wall between the building column, stair, and clean out.
3. the blasting method of disintegration frame construction building in original place according to claim 1 is characterized in that: go up following ignition charge successively certainly, when igniting the column of n-1 layer, it is also static to wait for that the above structure of n layer folded the top floor of falling the n-1 layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010102597589A CN101936075A (en) | 2010-08-23 | 2010-08-23 | Blasting method for dismantling frame structure building in situ |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102597589A CN101936075A (en) | 2010-08-23 | 2010-08-23 | Blasting method for dismantling frame structure building in situ |
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| CN101936075A true CN101936075A (en) | 2011-01-05 |
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| CN2010102597589A Pending CN101936075A (en) | 2010-08-23 | 2010-08-23 | Blasting method for dismantling frame structure building in situ |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153597A (en) * | 2014-07-18 | 2014-11-19 | 张振堂 | Low-rise building demolishing method |
| CN105973084A (en) * | 2016-07-27 | 2016-09-28 | 宏大矿业有限公司 | Blasting hole stemming method for thin-wall concrete structure |
| CN114754641A (en) * | 2022-04-21 | 2022-07-15 | 武汉***有限公司 | Directional dumping recoil control method for blasting demolition of large-span frame structure building |
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| KR20020013618A (en) * | 2000-08-11 | 2002-02-21 | 윤영석 | Method of Explosive Demolition on the Buildings by use of Explosives |
| CN101122179A (en) * | 2006-08-09 | 2008-02-13 | 上海复旦***建设工程有限公司 | Frame storied building blasting method |
| CN101314990A (en) * | 2008-07-03 | 2008-12-03 | 武汉***公司 | Method for dynamiting buildings |
| CN101660890A (en) * | 2008-08-27 | 2010-03-03 | 鞍钢集团矿业公司 | Method for demolishing surface mine underground reinforced concrete constructional work by blasting |
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2010
- 2010-08-23 CN CN2010102597589A patent/CN101936075A/en active Pending
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| KR20020013618A (en) * | 2000-08-11 | 2002-02-21 | 윤영석 | Method of Explosive Demolition on the Buildings by use of Explosives |
| CN101122179A (en) * | 2006-08-09 | 2008-02-13 | 上海复旦***建设工程有限公司 | Frame storied building blasting method |
| CN101314990A (en) * | 2008-07-03 | 2008-12-03 | 武汉***公司 | Method for dynamiting buildings |
| CN101660890A (en) * | 2008-08-27 | 2010-03-03 | 鞍钢集团矿业公司 | Method for demolishing surface mine underground reinforced concrete constructional work by blasting |
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| 《中国铁道科学》 20040229 张翠兵;邓志勇;张志毅;刘慧 《钢筋混凝土框架楼群定向***拆除》 110-114 , 第1期 2 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153597A (en) * | 2014-07-18 | 2014-11-19 | 张振堂 | Low-rise building demolishing method |
| CN104153597B (en) * | 2014-07-18 | 2016-08-24 | 张振堂 | A kind of low floor building demolition method |
| CN105973084A (en) * | 2016-07-27 | 2016-09-28 | 宏大矿业有限公司 | Blasting hole stemming method for thin-wall concrete structure |
| CN105973084B (en) * | 2016-07-27 | 2018-01-30 | 宏大矿业有限公司 | A kind of thin wall concrete structure blasting hole obstruction method |
| CN114754641A (en) * | 2022-04-21 | 2022-07-15 | 武汉***有限公司 | Directional dumping recoil control method for blasting demolition of large-span frame structure building |
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Application publication date: 20110105 |