CN104153597A - Low-rise building demolishing method - Google Patents
Low-rise building demolishing method Download PDFInfo
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- CN104153597A CN104153597A CN201410341659.3A CN201410341659A CN104153597A CN 104153597 A CN104153597 A CN 104153597A CN 201410341659 A CN201410341659 A CN 201410341659A CN 104153597 A CN104153597 A CN 104153597A
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Abstract
The invention belongs to the field of buildings, and particularly relates to a low-rise building demolishing method. The method includes that acid liquid is adopted to corrode wall bodies at four-corner reinforcing structures of a building and wall bodies on the surfaces of main beams to enable rebars inside the wall bodies to be exposed, the acid liquid and alkali liquid are allowed to mutually corrode and generate neutralizing heat to consume strength of the rebars, consumption of trinitrotoluene is lowered, the main beams and the four-corner reinforcing structures on each storey of the building are destroyed through exploding of the trinitrotoluene, an own load-bearing system of the building is damaged, and the building inwards collapses under action of gravity of own weight. By arranging a protection net in a pulled manner, people injury due to splashing of broken stone when trinitrotoluene is used to demolish the building is prevented, so that safety in the process of construction is improved. The low-rise building demolishing method is simple and low in labor rate, and only tens of workers are needed to complete spraying of the acid liquid and the alkali liquid and removing of ash on the surface of the rebars; by using trinitrotoluene for blasting demolition, the low-rise building demolishing method is high in speed and high in efficiency; due to protecting effect, operating personnel safety coefficient is high.
Description
Technical field
The invention belongs to building field, relate in particular to a kind of low floor building demolition method.
Background technology
At present, in order to improve city look and feel simultaneously also for the city of making rational planning for, the city of a lot of high speed developments need to be more of a specified duration to the age, and the old building of facility is removed, as villages within the city, tube-shaped apartment etc.Because its building age is more remote, its story height is low, density is large, and reinforcing bar materials'use amount is larger, in prior art, can only collide dismounting by excavator or other machinery, not only efficiency is slow, and in demolishing process, dust drifts, near resident living environment long-time impact.
Therefore how a kind of low floor building demolition method that speed of application is fast, labour intensity is low is provided, be the problem that this area merits attention and studies.
Summary of the invention
The object of this invention is to provide a kind of low floor building demolition method, the inventive method is simple, and work consuming rate is low, and dismounting speed is fast, and safety factor is high.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of low floor building demolition method, comprises the steps,
1) find the ruggedized construction of four jiaos, the girder of the each floor of building and floor, acid solution spraying 3-7 time is carried out in the ruggedized construction surface of four jiaos, floor, the time interval that adjacent twice acid solution sprays is 10-24 hour; After acid solution spraying, use drill rod to peel off the surperficial lime-ash of ruggedized construction, the inside reinforcing bar of ruggedized construction is exposed among air;
2) carry out twice acid solution sprinkling to being exposed to airborne ruggedized construction reinforcing bar, the time interval of twice acid solution sprinkling is 4-8 hour, and acid solution is used alkali lye to carry out twice sprinkling to ruggedized construction reinforcing bar after spraying at once, and spraying time is spaced apart 1-3 hour;
3) to through the 2nd) step ruggedized construction reinforcing bar after treatment shears, and after shearing, lays 30-50g TNT in reinforcing bar inside, then the lead-in wire of each floor place TNT is collected to a place;
4) acid solution sprinkling is carried out in the girder position of the each floor of building, the position that acid solution is sprayed is distributed in four jiaos, surface and the central point of girder, the line that acid solution is sprayed position is square, then 50-100g TNT is laid at the position after acid solution is sprayed, and makes to lay on girder the lead-in wire and the 3rd of TNT) lead-in wire of step gained is collected to a place;
5) outside the building face is vertically squeezed into steel column quadrilateral, and steel column height exceeds building 3-5m, uses protective screening to connect adjacent steel column, and the mesh of protective screening is rhombus net, and its width of mesh is 10cm
2, then, at the lead-in wire of the position up-igniting TNT apart from building 40-100m, building is removed under the explosive effect of TNT.
Preferably, the low floor building demolition of described one method, comprises the steps,
1) find the ruggedized construction of four jiaos, the girder of the each floor of building and floor, acid solution spraying 6 times is carried out in the ruggedized construction surface of four jiaos, floor, the time interval of adjacent twice acid solution spraying is 18 hours; After acid solution spraying, use drill rod to peel off the surperficial lime-ash of ruggedized construction, the inside reinforcing bar of ruggedized construction is exposed among air;
2) carry out twice acid solution sprinkling to being exposed to airborne ruggedized construction reinforcing bar, the time interval of twice acid solution sprinkling is 6 hours, and acid solution is used alkali lye to carry out twice sprinkling to ruggedized construction reinforcing bar after spraying at once, and spraying time is spaced apart 2 hours;
3) to through the 2nd) step ruggedized construction reinforcing bar after treatment shears, and after shearing, lays 40g TNT in reinforcing bar inside, then the lead-in wire of each floor place TNT is collected to a place;
4) acid solution sprinkling is carried out in the girder position of the each floor of building, the position that acid solution is sprayed is distributed in four jiaos, surface and the central point of girder, the line that acid solution is sprayed position is square, then 80g TNT is laid at the position after acid solution is sprayed, and makes to lay on girder the lead-in wire and the 3rd of TNT) lead-in wire of step gained is collected to a place;
5) outside the building face is vertically squeezed into steel column quadrilateral, and steel column height exceeds building 4m, uses protective screening to connect adjacent steel column, and the mesh of protective screening is rhombus net, and its width of mesh is 10cm
2, then, at the lead-in wire of the position up-igniting TNT apart from building 80m, building is removed under the explosive effect of TNT.
Preferably, the described the 1st) step and the 4th) acid solution that uses of step be 2mol/L salpeter solution, the soda bath that alkali lye is 2mol/L.
Compared with prior art, tool has the following advantages in the present invention:
1) adopt the body of wall at four jiaos of ruggedized construction places of acid liquid corrosion building and the body of wall on girder surface and inner steel bar is exposed, then acid, alkali lye corrode and produce the intensity of heat of neutralization consumption reinforcing bar mutually, reduce the consumption of TNT;
2) draw the protecting wire net of setting up defences, prevent that TNT from causing rubble to splash while removing building and hurting sb.'s feelings, improve the safety in work progress.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with specific embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
embodiment 1
1) find the ruggedized construction of four jiaos, the girder of the each floor of building and floor, acid solution spraying 3 times is carried out in the ruggedized construction surface of four jiaos, floor, the time interval of adjacent twice acid solution spraying is 10 hours; After acid solution spraying, use drill rod to peel off the surperficial lime-ash of ruggedized construction, the inside reinforcing bar of ruggedized construction is exposed among air;
2) carry out twice acid solution sprinkling to being exposed to airborne ruggedized construction reinforcing bar, the time interval of twice acid solution sprinkling is 4 hours, and acid solution is used alkali lye to carry out twice sprinkling to ruggedized construction reinforcing bar after spraying at once, and spraying time is spaced apart 1 hour;
3) to through the 2nd) step ruggedized construction reinforcing bar after treatment shears, and after shearing, lays 30g TNT in reinforcing bar inside, then the lead-in wire of each floor place TNT is collected to a place;
4) acid solution sprinkling is carried out in the girder position of the each floor of building, the position that acid solution is sprayed is distributed in four jiaos, surface and the central point of girder, the line that acid solution is sprayed position is square, then 50g TNT is laid at the position after acid solution is sprayed, and makes to lay on girder the lead-in wire and the 3rd of TNT) lead-in wire of step gained is collected to a place;
5) outside the building face is vertically squeezed into steel column quadrilateral, and steel column height exceeds building 3m, uses protective screening to connect adjacent steel column, and the mesh of protective screening is rhombus net, and its width of mesh is 10cm
2, then, at the lead-in wire of the position up-igniting TNT apart from building 40m, building is removed under the explosive effect of TNT.
The 1st) step and the 4th) acid solution that uses of step be 2mol/L salpeter solution, the soda bath that alkali lye is 2mol/L.
embodiment 2
1) find the ruggedized construction of four jiaos, the girder of the each floor of building and floor, acid solution spraying 7 times is carried out in the ruggedized construction surface of four jiaos, floor, the time interval of adjacent twice acid solution spraying is 24 hours; After acid solution spraying, use drill rod to peel off the surperficial lime-ash of ruggedized construction, the inside reinforcing bar of ruggedized construction is exposed among air;
2) carry out twice acid solution sprinkling to being exposed to airborne ruggedized construction reinforcing bar, the time interval of twice acid solution sprinkling is 8 hours, and acid solution is used alkali lye to carry out twice sprinkling to ruggedized construction reinforcing bar after spraying at once, and spraying time is spaced apart 3 hours;
3) to through the 2nd) step ruggedized construction reinforcing bar after treatment shears, and after shearing, lays 50g TNT in reinforcing bar inside, then the lead-in wire of each floor place TNT is collected to a place;
4) acid solution sprinkling is carried out in the girder position of the each floor of building, the position that acid solution is sprayed is distributed in four jiaos, surface and the central point of girder, the line that acid solution is sprayed position is square, then 100g TNT is laid at the position after acid solution is sprayed, and makes to lay on girder the lead-in wire and the 3rd of TNT) lead-in wire of step gained is collected to a place;
5) outside the building face is vertically squeezed into steel column quadrilateral, and steel column height exceeds building 5m, uses protective screening to connect adjacent steel column, and the mesh of protective screening is rhombus net, and its width of mesh is 10cm
2, then, at the lead-in wire of the position up-igniting TNT apart from building 100m, building is removed under the explosive effect of TNT.
The 1st) step and the 4th) acid solution that uses of step be 2mol/L salpeter solution, the soda bath that alkali lye is 2mol/L.
embodiment 3
1) find the ruggedized construction of four jiaos, the girder of the each floor of building and floor, acid solution spraying 6 times is carried out in the ruggedized construction surface of four jiaos, floor, the time interval of adjacent twice acid solution spraying is 18 hours; After acid solution spraying, use drill rod to peel off the surperficial lime-ash of ruggedized construction, the inside reinforcing bar of ruggedized construction is exposed among air;
2) carry out twice acid solution sprinkling to being exposed to airborne ruggedized construction reinforcing bar, the time interval of twice acid solution sprinkling is 6 hours, and acid solution is used alkali lye to carry out twice sprinkling to ruggedized construction reinforcing bar after spraying at once, and spraying time is spaced apart 2 hours;
3) to through the 2nd) step ruggedized construction reinforcing bar after treatment shears, and after shearing, lays 40g TNT in reinforcing bar inside, then the lead-in wire of each floor place TNT is collected to a place;
4) acid solution sprinkling is carried out in the girder position of the each floor of building, the position that acid solution is sprayed is distributed in four jiaos, surface and the central point of girder, the line that acid solution is sprayed position is square, then 80g TNT is laid at the position after acid solution is sprayed, and makes to lay on girder the lead-in wire and the 3rd of TNT) lead-in wire of step gained is collected to a place;
5) outside the building face is vertically squeezed into steel column quadrilateral, and steel column height exceeds building 4m, uses protective screening to connect adjacent steel column, and the mesh of protective screening is rhombus net, and its width of mesh is 10cm
2, then, at the lead-in wire of the position up-igniting TNT apart from building 80m, building is removed under the explosive effect of TNT.
The 1st) step and the 4th) acid solution that uses of step be 2mol/L salpeter solution, the soda bath that alkali lye is 2mol/L.
More than show and described general principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. a low floor building demolition method, is characterized in that, comprise the steps,
1) find the ruggedized construction of four jiaos, the girder of the each floor of building and floor, acid solution spraying 3-7 time is carried out in the ruggedized construction surface of four jiaos, floor, the time interval that adjacent twice acid solution sprays is 10-24 hour; After acid solution spraying, use drill rod to peel off the surperficial lime-ash of ruggedized construction, the inside reinforcing bar of ruggedized construction is exposed among air;
2) carry out twice acid solution sprinkling to being exposed to airborne ruggedized construction reinforcing bar, the time interval of twice acid solution sprinkling is 4-8 hour, and acid solution is used alkali lye to carry out twice sprinkling to ruggedized construction reinforcing bar after spraying at once, and spraying time is spaced apart 1-3 hour;
3) to through the 2nd) step ruggedized construction reinforcing bar after treatment shears, and after shearing, lays 30-50g TNT in reinforcing bar inside, then the lead-in wire of each floor place TNT is collected to a place;
4) acid solution sprinkling is carried out in the girder position of the each floor of building, the position that acid solution is sprayed is distributed in four jiaos, surface and the central point of girder, the line that acid solution is sprayed position is square, then 50-100g TNT is laid at the position after acid solution is sprayed, and makes to lay on girder the lead-in wire and the 3rd of TNT) lead-in wire of step gained is collected to a place;
5) outside the building face is vertically squeezed into steel column quadrilateral, and steel column height exceeds building 3-5m, uses protective screening to connect adjacent steel column, and the mesh of protective screening is rhombus net, and its width of mesh is 10cm
2, then, at the lead-in wire of the position up-igniting TNT apart from building 40-100m, building is removed under the explosive effect of TNT.
2. the low floor building demolition of one as claimed in claim 1 method, is characterized in that, comprise the steps,
1) find the ruggedized construction of four jiaos, the girder of the each floor of building and floor, acid solution spraying 6 times is carried out in the ruggedized construction surface of four jiaos, floor, the time interval of adjacent twice acid solution spraying is 18 hours; After acid solution spraying, use drill rod to peel off the surperficial lime-ash of ruggedized construction, the inside reinforcing bar of ruggedized construction is exposed among air;
2) carry out twice acid solution sprinkling to being exposed to airborne ruggedized construction reinforcing bar, the time interval of twice acid solution sprinkling is 6 hours, and acid solution is used alkali lye to carry out twice sprinkling to ruggedized construction reinforcing bar after spraying at once, and spraying time is spaced apart 2 hours;
3) to through the 2nd) step ruggedized construction reinforcing bar after treatment shears, and after shearing, lays 40g TNT in reinforcing bar inside, then the lead-in wire of each floor place TNT is collected to a place;
4) acid solution sprinkling is carried out in the girder position of the each floor of building, the position that acid solution is sprayed is distributed in four jiaos, surface and the central point of girder, the line that acid solution is sprayed position is square, then 80g TNT is laid at the position after acid solution is sprayed, and makes to lay on girder the lead-in wire and the 3rd of TNT) lead-in wire of step gained is collected to a place;
5) outside the building face is vertically squeezed into steel column quadrilateral, and steel column height exceeds building 4m, uses protective screening to connect adjacent steel column, and the mesh of protective screening is rhombus net, and its width of mesh is 10cm
2, then, at the lead-in wire of the position up-igniting TNT apart from building 80m, building is removed under the explosive effect of TNT.
3. the low floor building demolition of one as claimed in claim 1 or 2 method, is characterized in that, the 1st) step and the 4th) acid solution that uses of step be 2mol/L salpeter solution, the soda bath that alkali lye is 2mol/L.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410341659.3A CN104153597B (en) | 2014-07-18 | 2014-07-18 | A kind of low floor building demolition method |
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| CN201410341659.3A CN104153597B (en) | 2014-07-18 | 2014-07-18 | A kind of low floor building demolition method |
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| CN104153597A true CN104153597A (en) | 2014-11-19 |
| CN104153597B CN104153597B (en) | 2016-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107419918A (en) * | 2017-07-27 | 2017-12-01 | 上海二十冶建设有限公司 | A kind of Historical Buildings periphery single-layer frame retains method for dismounting |
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| JP2006188913A (en) * | 2005-01-07 | 2006-07-20 | Toda Constr Co Ltd | Demolishing work execution method for outer wall of building |
| CN1936237A (en) * | 2006-10-19 | 2007-03-28 | 上海交通大学 | Electrifying dismounting method for steel reinforced concrete structure building |
| CN101936075A (en) * | 2010-08-23 | 2011-01-05 | 重庆城建控股(集团)有限责任公司 | Blasting method for dismantling frame structure building in situ |
| CN101956467A (en) * | 2010-08-23 | 2011-01-26 | 重庆城建控股(集团)有限责任公司 | Blasting method for disintegrating frame building in situ with low impact |
| CN102733621A (en) * | 2012-07-25 | 2012-10-17 | 贵州新联爆破工程有限公司 | Blasting demolition method of buildings with hollow wall body and brick-concrete structure |
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2014
- 2014-07-18 CN CN201410341659.3A patent/CN104153597B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222619A (en) * | 1998-01-08 | 1999-07-14 | 殷剑明 | High-temperature pyrolysis method for dismantling concrete building |
| JP2006188913A (en) * | 2005-01-07 | 2006-07-20 | Toda Constr Co Ltd | Demolishing work execution method for outer wall of building |
| CN1936237A (en) * | 2006-10-19 | 2007-03-28 | 上海交通大学 | Electrifying dismounting method for steel reinforced concrete structure building |
| CN101936075A (en) * | 2010-08-23 | 2011-01-05 | 重庆城建控股(集团)有限责任公司 | Blasting method for dismantling frame structure building in situ |
| CN101956467A (en) * | 2010-08-23 | 2011-01-26 | 重庆城建控股(集团)有限责任公司 | Blasting method for disintegrating frame building in situ with low impact |
| CN102733621A (en) * | 2012-07-25 | 2012-10-17 | 贵州新联爆破工程有限公司 | Blasting demolition method of buildings with hollow wall body and brick-concrete structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107419918A (en) * | 2017-07-27 | 2017-12-01 | 上海二十冶建设有限公司 | A kind of Historical Buildings periphery single-layer frame retains method for dismounting |
| CN107419918B (en) * | 2017-07-27 | 2019-06-14 | 上海二十冶建设有限公司 | A kind of Historical Buildings periphery single-layer frame retains method for dismounting |
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| CN104153597B (en) | 2016-08-24 |
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Granted publication date: 20160824 Termination date: 20170718 |