CN108731565A - A kind of Prefabricated block and method of demolition blasting H profile steel structure - Google Patents
A kind of Prefabricated block and method of demolition blasting H profile steel structure Download PDFInfo
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- CN108731565A CN108731565A CN201810505053.7A CN201810505053A CN108731565A CN 108731565 A CN108731565 A CN 108731565A CN 201810505053 A CN201810505053 A CN 201810505053A CN 108731565 A CN108731565 A CN 108731565A
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- China
- Prior art keywords
- hollow mould
- profile steel
- cuboid
- cuboid hollow
- concrete
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/02—Particular applications of blasting techniques for demolition of tall structures, e.g. chimney stacks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electrochemistry (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Revetment (AREA)
Abstract
The invention discloses a kind of Prefabricated blocks and method of demolition blasting H profile steel structure.Including：Section is rectangular polyethylene cuboid hollow mould（2）, cuboid bottom back cover, upper end opening；The cuboid hollow mould（2）Two right angles of the long side in bottom are with r rounded corners, the cuboid hollow mould（2）Bottom, which is poured, is inoculated with concrete；Two pre-buried pvc pipes（4）, two pre-buried pvc pipes（4）The concrete poured bottom is inserted at fillet（3）；The mould inner wall and pre-buried pvc pipe（4）Placing concrete between outer wall（3）.Prefabricated component production method of the present invention is simple, and can make prefabricated component in advance before construction, significantly saves time cost, reduces the duration.
Description
Technical field
The invention belongs to engineering explosion technical fields, and in particular to H profile steel structural elements and build, structures demolition blastings
Technology, the more particularly to Prefabricated block of a kind of demolition blasting H profile steel structure and the method for demolition blasting H profile steel structure.
Background technology
It, can not since its structure sheet is as hollow even template material when demolition blasting steel dielectric member or construction of structures
Charge explosion is punched, be only capable of using Concentrated charge, outer charging and is welded into the technique for building concrete explosion in cylinder.
And process above has apparent technological deficiency.
1, Concentrated charge explosion need to use high brisance detonating explosive, and such explosive is mostly tubing products, civilian to be difficult to realize；
The Concentrated charge of high brisance detonating explosive processing is only capable of jet action in plank Cut blasting simultaneously, that is, is only capable of cutting on the steel plate
Seam and can not generate big opening make overall structure destroy unstability.
2, outer charging explosion is close to object explosive acting ability concentration of local to be removed in contact position, and it is fried not to be close to dismounting object
Medicine energy, which is not applied directly to largely, to be removed on object, is largely flogged a dead horse, and generate explosion wave, blasting flyrock and
Noise is all not easy prevention and control, can not implement under the inhabitation of environment complexity and production environment.
3, tubular Inner builds concrete explosion and is only applicable to the larger cylindrical steel structure of cross-sectional area, and construction site pours coagulation
Soil and curing time are long, and drilling operation destroys casting concrete structure, and inside concrete damage is unknowable, influences explosive payload and sentences
It is welded under disconnected and complex environment and to pour operation difficulty big.
Invention content
The present invention is to overcome prior art defect, is built for i-beam structure, the design feature of structures, proposes that explosion is torn open
Except the method for the Prefabricated block and demolition blasting H profile steel structure of H profile steel structure.
Purpose to realize the present invention, one aspect of the present invention provide a kind of Prefabricated block of demolition blasting H profile steel structure,
Including：
Section is rectangular polyethylene cuboid hollow mould, cuboid bottom back cover, upper end opening；The cuboid is hollow
With r rounded corners, cuboid hollow mould bottom, which is poured, is inoculated with concrete at two right angles of the long side of mold bottom；
Two pre-buried pvc pipes, two pre-buried pvc pipes are inserted into the concrete poured bottom at fillet；
Placing concrete between the cuboid hollow mould inner wall and pre-buried pvc pipe outer wall.
According to embodiments of the present invention, outer a length of H-2t of the mold2, outer width is（B-t1）/2；H is dismounting H-type to be blasted
The height of steel, B are width, t1For web thickness, t2For edge of a wing thickness.
According to embodiments of the present invention, the height of two pre-buried pvc pipes is not less than cuboid hollow mould upper end
Opening.
Another aspect of the present invention provides a kind of method of demolition blasting H profile steel structure, includes the following steps：
（1）With H-2t2For foreign minister,（B-t1）/ 2 be outer width, and making section is rectangular polyethylene cuboid hollow mould,
Two right angles of the long side of mold only retain upper end opening with r rounded corners, cuboid bottom back cover；H is dismounting H profile steel to be blasted
Height, B is width, t1For web thickness, t2For edge of a wing thickness；
（2）By placing concrete in cuboid hollow mould to bottom, until by two pre-buried pvc pipes against circle after certain altitude
Be inserted into cuboid hollow mould at angle on placing concrete, pre-buried PVC after installation is complete height it is hollow not less than cuboid
Mold upper end opening continues to pour coagulation between cuboid hollow mould inner wall and pre-buried pvc pipe outer wall along upper end opening
Soil is until fill the space between entire cuboid hollow mould inner wall and pre-buried pvc pipe outer wall；
（3）The concrete of pouring is conserved, obtains being made of concrete, pvc pipe and polyethylene cuboid hollow mould
Overall assembled Prefabricated block；
（4）H profile steel web transverse cuts precracking to be removed；
（5）Overall assembled Prefabricated block is fixed in H profile steel web to be removed and the edge of a wing；
（6）It is packed into pack along pre-buried pvc pipe, stemming is reused and blocks to pvc pipe nozzle；
（7）It detonates after the completion of preparation before protection, warning explosion.
The present invention realizes Prefabricated block assembled demolition blasting steel construction by four key technology points：
1, mold is made according to H profile steel size to be removed, reuses the prefabricated powder charge module of mold；
2, powder charge module can be directly assembled in H profile steel structure to be torn open；
3, charging hole is reserved in Prefabricated block, and selection dose, charging means, interval mode and interval can be adjusted according to actual conditions
Species type；
4, pre-buried pvc pipe must be close to mold inner chamfer, and mold chamfering is overlapped with H profile steel chamfering when installation.
Using above-mentioned technical proposal, the advantages of present invention compares existing method, has：
1, it using 2# rock emulsion explosives, is easier to obtain compared with control explosive；
2, explosive utilization rate is high, saves explosive cost, and smaller dose reaches target；
3, choosing multiple charging means and interval mode more make full use of explosive acting ability；
4, explosive is packed into inside angle steel, and explosion generates slungshot and shock wave harm is small, is easy protection；
5, prefabricated component production method is simple, and can make prefabricated component in advance before construction, significantly saves time cost, reduces work
Phase；
6, prefabricated component installation is simple, easy to operate.
Description of the drawings
Fig. 1 is polyethylene cuboid hollow mould elevational schematic view.
Fig. 2 is cross-sectional after polyethylene cuboid hollow mould powder charge.
Fig. 3 is that schematic diagram is completed in the assembly of prefabricated powder charge module.
In figure：1- dismounting H profile steels to be blasted；2- cuboid hollow moulds；3- concrete；The pre-buried pvc pipes of 4-；5- emulsifications are fried
Medicine；6- Nonel detonators；7- stemmings.
Specific implementation mode
The present invention is described further with specific implementation method below in conjunction with the accompanying drawings, not to the limit of its protection domain
System.
A kind of Prefabricated block of demolition blasting H profile steel structure, including：
Section is rectangular polyethylene cuboid hollow mould 2, cuboid bottom back cover, upper end opening；The cuboid is empty
With r rounded corners, 2 bottom of cuboid hollow mould, which is poured, is inoculated with concrete at two right angles of the long side in 2 bottom of heart mold；Two pre-
Pvc pipe 4 is buried, two pre-buried pvc pipes 4 are inserted into the concrete 3 poured bottom at fillet；
Placing concrete 3 between 4 outer wall of the mould inner wall and pre-buried pvc pipe.
Outer a length of H-2t of the mold2, outer width is（B-t1）/2；H is the height to be blasted for removing H profile steel, and B is width,
t1For web thickness, t2For edge of a wing thickness.
The height of two pre-buried pvc pipes 4 is not less than 2 upper end opening of cuboid hollow mould.
Embodiment 1, a kind of method of demolition blasting H profile steel structure, 1 size of dismounting H profile steel to be blasted is that height H is
400mm, width B are 400mm, web thickness t1For 13mm, edge of a wing thickness t2It is 22mm for 21mm, radius of corner r, a length of
150cm。
Using polythene material make a height of 150cm, cross section be rectangular 2 polyethylene cuboid hollow mould 2,
The a length of 398mm in middle section, width 193.5mm, radius of corner 22mm, thickness 2mm.Polyethylene cuboid hollow mould 2
There are openings, while two interior right angles of long side and coupled two broadsides composition all to fall for the one side being made of length and width side
Fillet, radius of corner 22mm.
Concrete 3, cement grade are injected into hollow mould along 2 unique upper end opening of polyethylene cuboid hollow mould
300。
After pouring height and being 50cm, by two pre-buried pvc pipes 4 along unique opening, it is close to polyethylene cuboid respectively
The interior angle of 2 rounded corner of hollow mould is inserted into concrete 3, insertion depth 5cm；Wherein pre-buried 4 long 105cm of pvc pipe, diameter
40mm。
Continue to pour between 2 inner wall of polyethylene cuboid hollow mould and 4 outer wall of pre-buried pvc pipe along upper end opening mixed
Solidifying soil 3 is until fill the space between 4 outer wall of entire 2 inner wall of cuboid hollow mould and pre-buried pvc pipe.
Concrete curing 28d obtains being made of polyethylene cuboid hollow mould 2, concrete 3, pre-buried pvc pipe 4 pre-
Powder charge module processed.
Choose dismounting 1 height of H profile steel to be blasted on 50cm to the web between 100cm every 5cm be cut into laterally and
Pre- joint-cutting, the pre- long 40mm of joint-cutting, wide 5mm.
Explosive pack is packed into 4 bottom of pre-buried pvc pipe, including 150g 52# rock breasts along 4 nozzle of pre-buried pvc pipe
Change explosive 5 and 61 and sends out ms-3 Nonel detonators 6.
It can detonate after carrying out the preceding preparation of the detonations such as the blocking of stemming 7, protection, evacuation and warning.
Cuboid hollow mould material be polyethylene, a length of 398mm in section, width 193.5mm, radius of corner 22mm,
Thickness is 2mm；Cement grade 300 in casting concrete, water, sand, cement proportion 1：3：1；Pre-buried pvc pipe size is length
150cm, diameter 40cm, wall thickness 3mm；The long 40mm of pre- joint-cutting, width 5mm, along angle steel right angle to be removed back；Powder charge pack is
150g2# rock emulsion explosives and 1 hair ms-3 Nonel detonators.Final test effect shearing length 18cm, destroys length 25cm.
Claims (4)
1. a kind of Prefabricated block of demolition blasting H profile steel structure, it is characterised in that including：
Section is rectangular polyethylene cuboid hollow mould（2）, cuboid bottom back cover, upper end opening；The cuboid
Hollow mould（2）Two right angles of the long side in bottom are with r rounded corners, the cuboid hollow mould（2）Bottom, which is poured, is inoculated with concrete；
Two pre-buried pvc pipes（4）, two pre-buried pvc pipes（4）The concrete poured bottom is inserted at fillet（3）；
The mould inner wall and pre-buried pvc pipe（4）Placing concrete between outer wall（3）.
2. a kind of Prefabricated block of demolition blasting H profile steel structure according to claim 1, it is characterised in that the mold
Outer a length of H-2t2, outer width is（B-t1）/2；H is the height to be blasted for removing H profile steel, and B is width, t1For web thickness 13mm,
t2For edge of a wing thickness.
3. a kind of Prefabricated block of demolition blasting H profile steel structure according to claim 1, it is characterised in that described two pre-
Bury pvc pipe（4）Height be not less than the cuboid hollow mould（2）Upper end opening.
4. a kind of method of demolition blasting H profile steel structure, it is characterised in that include the following steps：
（1）With H-2t2For foreign minister,（B-t1）/ 2 be outer width, and making section is rectangular polyethylene cuboid hollow mould（2）,
Two right angles of the long side of mold only retain upper end opening with r rounded corners, cuboid bottom back cover；H is dismounting H profile steel to be blasted
Height, B is width, t1For web thickness, t2For edge of a wing thickness；
（2）By cuboid hollow mould（2）Middle placing concrete（3）To bottom, until by two pre-buried pvc pipes after certain altitude
（4）Cuboid hollow mould is inserted at fillet（2）In with placing concrete（3）On, pre-buried pvc pipe（4）After installation is complete
Height is not less than cuboid hollow mould（2）Upper end opening continues along upper end opening to cuboid hollow mould（2）Inner wall and
Pre-buried pvc pipe（4）Placing concrete between outer wall（3）Until filling entire cuboid hollow mould（2）Inner wall and pre-buried pvc pipe
（4）Space between outer wall；
（3）To the concrete of pouring（3）It is conserved, is obtained by concrete（3）,PVC（4）Pipe and polyethylene cuboid are hollow
Mold（2）The overall assembled Prefabricated block of composition；
（4）H profile steel web transverse cuts precracking to be removed；
（5）Overall assembled Prefabricated block is fixed in H profile steel web to be removed and the edge of a wing；
（6）Along pre-buried pvc pipe（4）It is packed into pack, stemming is reused and blocks to pvc pipe（4）Nozzle；
（7）It detonates after the completion of preparation before protection, warning explosion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505053.7A CN108731565B (en) | 2018-05-24 | 2018-05-24 | Prefabricated module and method for blasting demolition of H-shaped steel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505053.7A CN108731565B (en) | 2018-05-24 | 2018-05-24 | Prefabricated module and method for blasting demolition of H-shaped steel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108731565A true CN108731565A (en) | 2018-11-02 |
| CN108731565B CN108731565B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810505053.7A Active CN108731565B (en) | 2018-05-24 | 2018-05-24 | Prefabricated module and method for blasting demolition of H-shaped steel structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155297A1 (en) * | 2004-01-20 | 2005-07-21 | Eugenio Aburto Ponce | Massive construction system using rock masonry |
| CN103938888A (en) * | 2014-05-14 | 2014-07-23 | 中钢集团武汉安全环保研究院有限公司 | Blasting demolition method for cylindrical steel column structure buildings |
| CN104964624A (en) * | 2015-07-01 | 2015-10-07 | 武汉宏伟交通爆破工程有限公司 | Axial embedded blast hole of reinforced concrete beam and blasting demolition method |
| CN205843498U (en) * | 2016-03-07 | 2016-12-28 | 黑龙江省三江工程建设管理局 | A kind of can explosion dyke for take off mouthful flood diversion |
| CN208432159U (en) * | 2018-05-24 | 2019-01-25 | 中钢集团武汉安全环保研究院有限公司 | A kind of Prefabricated block of demolition blasting H profile steel structure |
-
2018
- 2018-05-24 CN CN201810505053.7A patent/CN108731565B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155297A1 (en) * | 2004-01-20 | 2005-07-21 | Eugenio Aburto Ponce | Massive construction system using rock masonry |
| CN103938888A (en) * | 2014-05-14 | 2014-07-23 | 中钢集团武汉安全环保研究院有限公司 | Blasting demolition method for cylindrical steel column structure buildings |
| CN104964624A (en) * | 2015-07-01 | 2015-10-07 | 武汉宏伟交通爆破工程有限公司 | Axial embedded blast hole of reinforced concrete beam and blasting demolition method |
| CN205843498U (en) * | 2016-03-07 | 2016-12-28 | 黑龙江省三江工程建设管理局 | A kind of can explosion dyke for take off mouthful flood diversion |
| CN208432159U (en) * | 2018-05-24 | 2019-01-25 | 中钢集团武汉安全环保研究院有限公司 | A kind of Prefabricated block of demolition blasting H profile steel structure |
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|---|---|
| CN108731565B (en) | 2023-05-09 |
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