CN108547472A - A kind of Prefabricated block of demolition blasting steel angle structure - Google Patents
A kind of Prefabricated block of demolition blasting steel angle structure Download PDFInfo
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- CN108547472A CN108547472A CN201810505078.7A CN201810505078A CN108547472A CN 108547472 A CN108547472 A CN 108547472A CN 201810505078 A CN201810505078 A CN 201810505078A CN 108547472 A CN108547472 A CN 108547472A
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- mold
- steel
- pvc pipe
- angle steel
- hollow
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- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
The invention discloses a kind of Prefabricated blocks of demolition blasting steel angle structure.Including：Mold angle steel, the mold angle steel are identical as dismounting angle steel model to be blasted；It is assembled into hollow groove-shaped mold based on the mold angle steel；Solid state medium, granule medium, fluid media (medium) are poured in the hollow groove-shaped mold, are poured in medium in the hollow groove-shaped mold and are inserted into pvc pipe；The pvc pipe is for being packed into pack；The dismounting angle steel back to be blasted transverse cuts precracking；The solid state medium is concrete, and granule medium is sand, and fluid media (medium) is water.Explosive utilization rate of the present invention is high, saves explosive cost, and smaller dose reaches target；Choosing multiple charging means and interval mode more make full use of explosive acting ability；Explosive is packed into inside angle steel, and explosion generates slungshot and shock wave harm is small, is easy protection.
Description
Technical field
The invention belongs to engineering explosion technical fields, and in particular to angle steel steel structure member and construction of structures demolition blasting skill
Art field, more particularly to a kind of Prefabricated block of demolition blasting steel angle 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.
Invention content
The present invention is to overcome prior art defect, for the design feature of steel angle structure construction of structures, proposes a kind of explosion
Remove the Prefabricated block of steel angle structure.
Technical solution of the invention is：A kind of Prefabricated block of demolition blasting steel angle structure, including：
Mold angle steel, the mold angle steel are identical as dismounting angle steel model to be blasted；
It is assembled into hollow groove-shaped mold based on the mold angle steel；
Solid state medium, granule medium, fluid media (medium) are poured in the hollow groove-shaped mold, are poured and are situated between in the hollow groove-shaped mold
Pvc pipe is inserted into matter；
The pvc pipe is for being packed into pack；
The dismounting angle steel back to be blasted transverse cuts precracking；
The solid state medium is concrete, and granule medium is sand, and fluid media (medium) is water.
According to embodiments of the present invention, the solid state medium is concrete, and the hollow groove-shaped mold keeps flat mold angle steel
In ground, two width bottom edge of angle steel and corresponding length sky side are assembled into the hollow groove-shaped mold of u shapes using three block baffles；Coagulation
When soil pours highly flute profile mold height half hollow for u shapes, the pre-buried pvc pipe of a back cover is put on the concrete poured
As pre-buried charging hole, pressing pre-buried pvc pipe makes it be absorbed in casting concrete；One end closure of pvc pipe, another end opening, PVC
Channel closure is located in concrete, pvc pipe opening is longer than angle steel；Continue the placing concrete into u shapes hollow groove-shaped mold, until heavy
Concrete height and two width of angle steel are contour after the completion of drop；The concrete of pouring is conserved, waits being taken off after the completion of conserving
Mould opens the hollow groove-shaped mold of u shapes and rejects three pieces of planks, obtains being made of concrete, pvc pipe and mold angle steel whole pre-
Molding block.
According to embodiments of the present invention, the solid state medium is concrete, the hollow groove-shaped mold, with two pieces of identical moulds
Have angle steel opening direction to fix as a column girder steel hollow groove-shaped mold opening direction；By the hollow flute profile mould of column girder steel
Tool is vertical to be placed, casting concrete；When casting concrete height is the 1/3 ~ 1/2 of cylindrical hollow girder steel groove-shaped mold height, erect
To being inserted into pvc pipe, pvc pipe lower part back cover, upper opening, along cylindrical hollow girder steel groove-shaped mold inner wall and pvc pipe outer wall it
Between continue casting concrete, until sedimentation after between column hollow steel beam groove-shaped mold inner wall and pvc pipe outer wall space filling
Completely；The concrete of pouring is conserved, waits being demoulded after the completion of conserving, rejects one block of mold angle steel, obtain by coagulation
The integral prefabricated module of soil, pvc pipe and mold angle steel composition.
According to embodiments of the present invention, pre-buried pvc pipe central axes overlap or pre-buried with the hollow groove-shaped mold central axes of u shapes
Pvc pipe is located among the hollow groove-shaped mold of column girder steel, obtains the integral prefabricated module of central charge.
According to embodiments of the present invention, it is pre-buried to be close to angle steel side for pre-buried pvc pipe right angle in mold angle steel, obtains eccentric dress
The integral prefabricated module of medicine.
According to embodiments of the present invention, further include：
Cuboid-type box-like mold, the cuboid-type box-like mold bottom sealing, upper end opening are solid vertically close to mould inner wall
Surely a suction pipe is put into as reserved threading hole；It is cast with concrete in the cuboid-type box-like mold, it is pre- in concrete
Bury a reserved pvc pipe；Without concrete in the suction pipe inner cavity；
Demoulding is seperated prefabricated module after the completion of the cuboid-type box-like mold inner concrete maintenance；
Filling emulsion and Nonel detonator are seperated assembled powder charge module in the reserved pvc pipe；
The hollow groove-shaped mold, by mold angle steel identical with dismounting angle steel to be blasted and dismounting angle steel welding group to be blasted
At section is rectangle, and it is hollow that the hollow flute profile mold bottom uses the steel plate seamless welding with angle steel same material to obtain
Tubular girder steel；
The fission assembled powder charge module is packed into hollow tubular girder steel.
According to embodiments of the present invention, it reserves pvc pipe and is located at cuboid-type box-like mold centre, for seperated center assembled
Prefabricated block；Alternatively, along one right angle of cuboid-type mold to be close to mould inner wall pre-buried vertically for reserved pvc pipe, for it is seperated partially
The prefabricated module of the heart.
According to embodiments of the present invention, the seperated assembled powder charge mould reserved pvc pipe nozzle stemming in the block, it is described
Seperated assembled powder charge module is packed into hollow at least two pieces of tubular girder steel, between stemming between every piece of seperated assembled powder charge module
Every the bottom of the hollow tubular girder steel welding is filled with stemming.
According to embodiments of the present invention, further include：
Plastic rectangular cylindrical mould, the plastic rectangular cylindrical mould with two number of edges of demolition blasting angle steel according to for it is long with
Width makes；The plastic rectangular cylindrical mould bottom seal, upper end opening；One is welded in plastic rectangular cylindrical mould bottom
A pre-buried pvc pipe with cylindrical mould equal length, pvc pipe central axes are overlapped with plastic rectangular type cylindrical mould；Along upper
End opening pours into aqueous medium between plastic rectangular cylindrical mould inner wall and pre-buried pvc pipe outer wall, until aqueous medium is full of modeling
Space between cuboid cylindrical mould inner wall and pre-buried pvc pipe outer wall is expected, in plastic rectangular cylindrical mould opening plastics
Plank is loaded into heat sealing between the mould inner wall of aqueous medium and pvc pipe outer wall；The pre-buried pvc pipe tube bottom tamping,
Centre is pack, pvc pipe nozzle stemming；As aqueous medium powder charge Prefabricated block；
The hollow groove-shaped mold, by mold angle steel identical with dismounting angle steel to be blasted and dismounting angle steel welding group to be blasted
At section is rectangle, and it is hollow that the hollow flute profile mold bottom uses the steel plate seamless welding with angle steel same material to obtain
Tubular girder steel；
The aqueous medium powder charge Prefabricated block is packed into hollow tubular girder steel.
According to embodiments of the present invention, further include：
Plastic rectangular cylindrical mould, the plastic rectangular cylindrical mould with two number of edges of demolition blasting angle steel according to for it is long with
Width makes；The plastic rectangular cylindrical mould bottom seal, upper end opening；The plastic rectangular cylindrical mould centre is pre-
It is embedded to the pre-buried pvc pipe that a root long degree is slightly higher than upper end opening, particle Jie is poured between pre-buried pvc pipe outer wall and mould inner wall
Matter, powder charge in the pre-buried pvc pipe, the pre-buried pvc pipe nozzle are blocked with stemming；As granule medium powder charge Prefabricated block；
The hollow groove-shaped mold, by mold angle steel identical with dismounting angle steel to be blasted and dismounting angle steel welding group to be blasted
At section is rectangle, and it is hollow that the hollow flute profile mold bottom uses the steel plate seamless welding with angle steel same material to obtain
Tubular girder steel；
The granule medium powder charge Prefabricated block is packed into hollow tubular girder steel.
The present invention realizes Prefabricated block demolition blasting steel construction by four key technology points：
1, dismounting angle steel to be blasted is welded into girder steel；
2, charging mould is made, reserved charging hole when medium is poured in mold；
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, different types of Prefabricated block can be selected according to the actual conditions of demolition blasting angle steel.
Using above-mentioned technical proposal, the advantages of present invention compares existing method, has：1, pack uses 2# rock emulsion explosives,
It is easier to obtain compared with control explosive；2, explosive utilization rate is high, saves explosive cost, and smaller dose reaches target；3, may be used
A variety of charging means and interval mode are selected, explosive acting ability is more made full use of；4, explosive is packed into inside angle steel, and explosion generates
Slungshot and shock wave harm are small, are easy protection.
Description of the drawings
Fig. 1 is mold angle steel schematic diagram.
Fig. 2 is the hollow groove-shaped mold schematic diagram of u shapes.
Fig. 3 is overall assembled Prefabricated block schematic diagram.
Fig. 4 is that schematic diagram is completed in the assembly of prefabricated powder charge module.
Fig. 5 is eccentric prefabricated powder charge module diagram.
Fig. 6 is that schematic diagram is completed in eccentric prefabricated powder charge module assembly.
Fig. 7 is hollow tubular girder steel mold schematic diagram.
Fig. 8 is that seperated assembled powder charge module planing surface diagram is intended to.
Fig. 9 is that planing surface diagram intention is completed in the assembly of prefabricated powder charge module.
Figure 10 is A-A cross-sectional view schematic diagrames in Fig. 9.
Figure 11 is that eccentric seperated assembled powder charge module planing surface diagram is intended to.
Figure 12 is that eccentric prefabricated powder charge module assembly completion planing surface diagram is intended to.
Figure 13 is A-A cross-sectional view schematic diagrames in Figure 12.
Figure 14 is prefabricated aqueous medium powder charge module planing surface figure.
Figure 15 is that schematic diagram is completed in the assembly of prefabricated aqueous medium powder charge module.
Figure 16 is that schematic diagram is completed in the assembly of preformed particles medium powder charge module.
In figure：1- mold angle steel；The hollow groove-shaped mold of 2-u shapes；3- Prefabricated blocks；4- pvc pipes；The dismounting angles to be blasted 5-
Steel；The pre- joint-cuttings of 6-；7- emulsions；The hollow tubular girder steels of 8-；9- concrete；10- stemmings；11- reserves threading hole；12-
Nonel detonator；13 detonators；14- stemmings；15- water；16- plastic rectangular cylindrical moulds；17- plastic plates；18- sand is situated between
Matter.
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 steel angle structure, including：
Mold angle steel 1, the mold angle steel are identical as dismounting 5 models of angle steel to be blasted；
It is assembled into hollow groove-shaped mold based on the mold angle steel 1；
Solid state medium, granule medium, fluid media (medium) are poured in the hollow groove-shaped mold, are poured and are situated between in the hollow groove-shaped mold
Pvc pipe 4 is inserted into matter；
The pvc pipe 4 is for being packed into pack；
The 5 back transverse cuts precracking of dismounting angle steel to be blasted；
The solid state medium is concrete, and granule medium is sand, and fluid media (medium) is water.
Embodiment 1：The integral prefabricated module of the hollow groove-shaped mold of u shapes
Make one and 5 size of dismounting angle steel to be blasted（80mm*80mm*8mm）Mold angle steel 1 in identical Fig. 1, long 150cm；
Mold angle steel 1 is lain against into ground, using three block baffles by angle steel side and bottom package at the hollow groove-shaped mold 2 of u shapes, wherein
Long baffle seals angle steel side, non-porous side's baffle seals angle steel bottom, trepanning（Diameter 42mm is located at angle steel interface center）Gear
Plate seals at the top of angle steel；The casting concrete in the hollow groove-shaped mold 2 of u shapes（Label 300）, pour after height 2cm from angle steel top
Long 105cm, the pre-buried pvc pipe 4 of diameter 40cm are inserted at portion's perforated baffle；Continue to pour coagulation in the hollow groove-shaped mold of u shapes 2
Soil, until height is identical as angle steel vertical edge after concrete settlement.Three block baffles are removed after concrete curing 28d, are obtained by mold
Angle steel 1, pre-buried pvc pipe 4 and coagulation local soil type at overall assembled Prefabricated block 3.Dismounting angle steel 150cm to be blasted is chosen,
50cm every 5cm to being cut into horizontal and vertical pre- joint-cutting 6 between 100cm（Long 40mm, wide 5mm）, then by overall assembled
Prefabricated block 3 is assembled into assembly as shown in Figure 4 with dismounting angle steel 5 to be blasted and completes structure, uses length 380mm, width
12.6mm nylon binding bands are fixed, each bandage spacing distance 15cm since top.It is packed into medicine along 4 nozzle of pre-buried pvc pipe
It wraps assembly to complete in structure stage casing 50cm, wherein 2# rock emulsion explosives 7 are 150g（Charge positions divide 3 from the 50cm of bottom
Section powder charge, every section of 50g, every section of airspace 15cm）With 3 hair ms-3 Nonel detonators.Carry out stemming blocking, protection, evacuation and
It can detonate after preparation before the detonation such as warning.
1 size of mold angle steel is 80mm*80mm*8mm, long 150cm in embodiment 1；Baffle is wooden rectangle baffle, thick
1cm is spent, size is respectively 90mm*90*mm, 90mm*90mm and 90mm*150cm；Cement grade 300 in casting concrete, water,
Sand, cement proportion 1：3：1；4 size of pre-buried pvc pipe is long 105cm, diameter 40cm, wall thickness 3mm；6 long 40mm of pre- joint-cutting, width
5mm, along 5 right angle back of dismounting angle steel to be blasted；Nylon binding belt length 38cm, width 12.6mm；Per 15cm underground borehole blastings
50g is packed into 1 hair detonator, uses 150g2# rock emulsion explosives, 3 hair ms-3 Nonel detonators in total.Final test effect cut-out
Length 50cm destroys length 67cm.
Embodiment 2：The integral prefabricated module of cylindrical hollow girder steel mold
Make identical with 5 size of the dismounting angle steel to be blasted mold angle steel of two sizes 1（80mm*80mm*8mm）, long 1500mm；
Two pieces of 1 opening directions of mold angle steel fix every 15cm as a column sky opening direction with 10# zinc plated mild carbon steels silk
Heart girder steel mold；It is poured containing pre-buried pvc pipe 4 in cylindrical hollow girder steel mold（Diameter 40mm）Overall assembled prefabricated molds
Block 3.It is cut into horizontal and vertical pre- joint-cutting 6 in dismounting angle steel 5 to be blasted（Long 35mm, wide 5mm）, then overall assembled is pre-
Molding block 3 and mold angle steel 1 are assembled into assembly as shown in Figure 4 with dismounting angle steel 5 to be blasted and complete structure.Along pre-buried PVC
It is 150g that 4 nozzle of pipe, which is packed into 2# rock emulsion explosives 7,（Charge positions are in the 500mm of stage casing）, blocked, protected, being evacuated and
It can detonate after preparation before the detonation such as warning.
Embodiment 3：Eccentric overall assembled Prefabricated block
Make one and 5 size of dismounting angle steel to be blasted（80mm*80mm*8mm）Mold angle steel 1 in identical Fig. 1, long 150cm；
Mold angle steel 1 is lain against into ground, using three block baffles by angle steel side and bottom package at the hollow groove-shaped mold 2 of u shapes, wherein
Long baffle seals angle steel side, square baffle seals at the top and bottom of angle steel；It is close to right-angle side in angle steel and places long 105cm, diameter
The pre-buried pvc pipe 4 of 40cm, pvc pipe bottom seal, the opening side's of being close to baffle are concordant with angle steel opening；In the hollow groove-shaped mold of u shapes
Casting concrete in 2（Label 300）, cover pre-buried pvc pipe 4；Continue the casting concrete in the hollow groove-shaped mold 2 of u shapes, until
Height is concordant with angle steel vertical edge after concrete settlement.Three block baffles and mold angle steel 1 are removed after concrete curing 28d, obtain by
Pre-buried pvc pipe 4 and coagulation local soil type at eccentric overall assembled Prefabricated block 3.5 length 150cm of dismounting angle steel to be blasted is chosen,
Back is cut into horizontal and vertical pre- joint-cutting 6 every 5cm on the outside of angle steel right angle between at the beginning of 50cm first arrivals 100cm（It is long
40mm, wide 5mm）, then by mold angle steel 1 and 5 clipping bias overall assembled Prefabricated block 3 of dismounting angle steel to be blasted, composition is cut
Face is rectangular long tubular structure to be blasted, and structure is completed in assembly as shown in Figure 6.Use length 380mm, width 12.6mm Buddhist nun
Imperial binding band fixes long tubular structure to be blasted, each bandage spacing distance 15cm since structural top to be blasted.Along pre-
It buries 4 nozzle of pvc pipe to be packed into pack to assembly completion structure stage casing 50cm, wherein 2# rock emulsion explosives 7 are 150g（Powder charge position
It sets from the 50cm of bottom, point 3 sections of powder charges, every section of 50g, every section of airspace 15cm）With 3 hair ms-3 Nonel detonators.Carry out big gun
It can detonate after the preceding preparation of the detonations such as mud blocking, protection, evacuation and warning.
1 size of mold angle steel is 80mm*80mm*8mm, long 150cm in embodiment 3；Baffle is wooden rectangle baffle, thick
1cm is spent, size is respectively 90mm*90*mm, 90mm*90mm and 90mm*150cm；Cement grade 300 in casting concrete, water,
Sand, cement proportion 1：3：1；4 size of pre-buried pvc pipe is long 105cm, diameter 40cm, wall thickness 3mm；6 long 40mm of pre- joint-cutting, width
5mm, along 5 right angle back of dismounting angle steel to be blasted；Nylon binding belt length 38cm, width 12.6mm；Per 15cm underground borehole blastings
50g is packed into 1 hair detonator, uses 150g2# rock emulsion explosives 7,3 to send out ms-3 Nonel detonators in total.Final test effect is cut
Disconnected length 54cm, destroys length 70cm.
Embodiment 4：Seperated assembled powder charge module
5 size of dismounting angle steel to be blasted is 80mm*80mm*8mm, is made of with the steel to be blasted for removing 5 same material of angle steel
With the attached angle steel one piece to be blasted for removing 5 same edge dimension data of angle steel, length 150cm；This attached angle steel long side is corresponded to
5 long side of dismounting angle steel to be blasted, short side correspond to short side fixed to forming hollow tubular girder steel 8 on dismounting angle steel 5 to be blasted.
Using with the steel plate to be blasted for removing 5 same material of angle steel by 8 bottom seamless welding of hollow tubular girder steel.
The plastics square flask shape mold for customizing a bottom side length 80mm, high 150mm, thickness 3mm, close to mould inner wall
The vertical fixed suction pipe for being put into a root long 15cm, direct 1cm is poured into mixed as threading hole 11 is reserved along mold upper end opening
Solidifying soil 9（Label 300）, it is 5cm to pour height, keeps reserving in 11 inner cavity of threading hole without concrete 9；Wait for that concrete 9 is naturally heavy
It is embedded into the reserved pvc pipe 4 that a root long degree is 11cm vertically in square bodily form mold centre after the completion of drop（Direct 40cm）, in advance
Pvc pipe 4 is stayed to have 1cm to be inserted into placing concrete 9.
Continue placing concrete 9 along between 4 outer wall of reserved pvc pipe and square bodily form mould inner wall, until concrete 9 is certainly
So sedimentation is completed and height is just identical as square bodily form mold upper end opening height.
The concrete of pouring is conserved, waits being demoulded after the completion of conserving, just obtains one piece of seperated assembled powder charge
Prefabricated block 3.
It first will respectively be filled out in three seperated assembled powder charge Prefabricated blocks 3 along reserved pvc pipe 4 according to shotfiring safety regulation
Enter 50g emulsions 7 and one and send out Nonel detonator 12, then is blocked to pvc pipe 4 and managed along reserved pvc pipe 4 with stemming 10
Mouthful, three seperated assembleds powder charge module is obtained, No. I, No. II, No. III seperated assembled powder charge Prefabricated block are respectively designated as
3。
It is long every 5cm transverse cuts at 5 back of dismounting angle steel to be blasted every 25cm from top to down in hollow tubular girder steel 8
Degree is angle steel length of side half, the precracking that width is 5mm, often locates totally three precracking, at total three.
Start charging operation, inserts 30cm thickness stemming 14 into hollow tubular girder steel 8 from opening first in hollow tubular
The bottom that girder steel 8 welds is packed into No. I seperated assembled powder charge Prefabricated block 3 after compacting；It then proceedes to along opening to hollow cylinder
25cm thickness stemming 14 is inserted in shape girder steel 8 in No. I seperated assembled powder charge module top, pulls out No. I seperated assembled powder charge
Mould detonator 13 in the block makes the detonator 13 reserve threading hole 11 from No. II seperated assembled powder charge Prefabricated block 3 and passes through,
Place into No. II seperated assembled powder charge Prefabricated block 3；Inserted into hollow tubular girder steel 8 along opening 25cm thickness stemming 14 in
No. II seperated 3 top of assembled powder charge Prefabricated block, pulls out 13 He of detonator in No. II seperated assembled powder charge Prefabricated block 3
It has passed through in No. I seperated assembled powder charge Prefabricated block 3 for reserving threading hole 11 in No. II seperated assembled powder charge Prefabricated block 3
Detonator 13, so that this two detonators 13 is reserved threading hole 11 from No. III seperated assembled powder charge Prefabricated block 3 and pass through, then
It is put into No. III seperated assembled powder charge Prefabricated block 3；25cm thickness stemmings are finally inserted into hollow tubular girder steel 8 along opening
14, just reach 8 upper end aperture of hollow tubular girder steel.
Three detonators 13 in three seperated assembled powder charge Prefabricated blocks 3 are grabbed into a branch of, waits guarding against, protecting etc. quick-fried
It can detonate after the completion of preparation before broken.
1 size of mold angle steel is 80mm*80mm*8mm, long 150cm in embodiment 4；Back cover plate size is 10cm*
10cm*1cm；Square box-like mold material is polyethylene, a length of 8cm of bottom sides, high 15cm, wall thickness 3mm；Reserved threading hole 11
Material be polypropylene, long 15cm, outer diameter 1cm, wall thickness 2mm；Cement grade 300 in casting concrete 9, water, sand, cement proportion
It is 1：3：1；4 size of pre-buried pvc pipe is long 11cm, diameter 40cm, wall thickness 3mm；The long 40mm of pre- joint-cutting, width 5mm, along to be blasted
Remove 5 right angle back of angle steel, per fission assembled powder charge Prefabricated block 3 in powder charge 50g, be packed into 1 hair detonator, three modules are in total
Ms-3 Nonel detonators 12 are sent out using 150g2# rock emulsion explosives 7,3, are spaced with stemming 14 between each powder charge module.Finally
Test effect shearing length 52cm destroys length 71cm.
Embodiment 5：Seperated eccentric assembling formula Prefabricated block
5 size of dismounting angle steel to be blasted is 80mm*80mm*8mm, is made of with the steel to be blasted for removing 5 same material of angle steel
With the mold angle steel 1 one pieces to be blasted for removing 5 same edge dimension data of angle steel, length 150cm；By this 1 long side pair of mold angle steel
5 long side of dismounting angle steel to be blasted, short side is answered to correspond to short side fixed to forming hollow tubular girder steel 8 on dismounting angle steel 5 to be blasted.Make
With with the steel plate to be blasted for removing 5 same material of angle steel by 8 bottom seamless welding of hollow tubular girder steel.Customize a bottom side length
The plastics square flask shape mold of 80mm, high 150mm, thickness 3mm, close to mould inner wall, fixation is put into a root long vertically
Threading hole 11 is reserved in the suction pipe conduct of 15cm, direct 1cm, and concrete 9 is poured into along mold upper end opening（Label 300）, pour
It is 5cm to build height, keeps reserving in 11 inner cavity of threading hole without concrete 9；Wait for 9 natural subsidence of concrete after the completion in the square bodily form
One interior right angle of mold is close to square mould inner wall and is embedded into the reserved pvc pipe 4 that a root long degree is 11cm vertically（Diameter
40cm）, reserving pvc pipe 4 has 1cm to be inserted into 9 in placing concrete.Along in 4 outer wall of reserved pvc pipe and square bodily form mold
Between wall continue placing concrete 9, until 9 natural subsidence of concrete complete and height just with square bodily form mold upper end opening
It is highly identical.The concrete 9 of pouring is conserved.It waits being demoulded after the completion of conserving, just obtains one piece of seperated eccentric assembling
Formula powder charge Prefabricated block 3.
According to shotfiring safety regulation along reserved pvc pipe 4 first by three seperated eccentric assembling formula powder charge Prefabricated blocks 3 points
Not Tian Ru 50g emulsions 7 and one send out Nonel detonator 12, then with stemming 10 along the blocking of reserved pvc pipe 4 to pvc pipe 4
Nozzle obtains three seperated assembleds powder charge module, is respectively designated as No. I, No. II, No. No. III seperated eccentric assembling formula powder charge
Prefabricated block 3.
It is long every 5cm transverse cuts at 5 back of dismounting angle steel to be blasted every 25cm from top to down in hollow tubular girder steel 8
Degree is angle steel length of side half, the precracking that width is 5mm, often locates totally three precracking, at total three.
Start charging operation, inserts 30cm thickness stemming 14 into hollow tubular girder steel 8 from opening first in hollow tubular
The bottom that girder steel 8 welds is packed into No. I seperated eccentric assembling formula powder charge Prefabricated block 3 after compacting；It then proceedes to along opening to sky
25cm thickness stemming 14 is inserted in heart tubular girder steel 8 in No. I seperated 3 top of eccentric assembling formula powder charge Prefabricated block, pulls out No. I fission
Detonator 13 in eccentric assembling formula powder charge Prefabricated block 3 keeps the detonator 13 prefabricated from No. II seperated eccentric assembling formula powder charge
Threading hole 11 is reserved in module 3 to pass through, and places into No. II seperated eccentric assembling formula powder charge Prefabricated block 3；Along opening to hollow
25cm thickness stemming 14 is inserted in tubular girder steel 8 in No. II seperated 3 top of eccentric assembling formula powder charge Prefabricated block, pulls out No. II fission
It detonator 13 in eccentric assembling formula powder charge Prefabricated block 3 and has passed through in No. II seperated eccentric assembling formula powder charge Prefabricated block 3
Detonator 13 in No. I eccentric seperated assembled powder charge module 3 of reserved threading hole 11, makes this two detonators 13 from No. III point
Threading hole 11 is reserved in body eccentric assembling formula powder charge Prefabricated block 3 to pass through, and places into No. III eccentric seperated assembled powder charge module；
25cm thickness stemming 14 is finally inserted into hollow tubular girder steel 2 along opening, just reaches 8 upper end aperture of hollow tubular girder steel.
Three detonators 13 in three seperated assembled powder charge Prefabricated blocks 3 are grabbed into a branch of, waits preparing before the explosions such as guarding against, protecting
It can detonate after the completion of work.
1 size of mold angle steel is 80mm*80mm*8mm, long 150cm；Back cover plate size is 10cm*10cm*1cm；Just
Cube flask shape mold material is polyethylene, a length of 8cm of bottom sides, high 15cm, wall thickness 3mm；The material of reserved threading hole 6 is poly-
Propylene, long 15cm, outer diameter 1cm, wall thickness 2mm；Cement grade 300 in casting concrete 9, water, sand, cement proportion 1：3：1；In advance
It is long 11cm, diameter 40cm, wall thickness 3mm to bury 4 size of pvc pipe；The long 40mm of pre- joint-cutting, width 5mm, along dismounting angle steel 5 to be blasted
Right angle back.Powder charge 50g in every piece of seperated assembled powder charge Prefabricated block 3, is packed into 1 hair detonator, and three modules use in total
150g2# rock emulsion explosives 7,3 send out ms-3 Nonel detonators 12, are spaced with stemming 14 between each powder charge module.Final experiment
Effect shearing length 54cm destroys length 73cm.
Embodiment 6：Aqueous medium Prefabricated block
Make one and 5 size of dismounting angle steel to be blasted（80mm*80mm*8mm）Identical mold angle steel 1, long 150cm；By mould
Tool 1 long side of angle steel corresponds to 5 long side of dismountings angle steel to be blasted, short side corresponds to after short side is aligned and uses electric welding at hollow tubular steel
Beam reuses steel plate washer by hollow steel beam bottom back cover；From hollow steel beam length 60cm to the dismounting angle to be blasted between 90cm
5 outside of steel is cut into horizontal and vertical pre- joint-cutting 6 every 5cm（Long 40mm, wide 5mm）；Plastic material cross sectional dimensions customized
For the plastic rectangular cylindrical mould 16 of 78*78cm, thickness 3mm, long 150cm；Along 16 central axes of plastic rectangular cylindrical mould
In the pre-buried pvc pipe 4 of one long 150cm of mold bottom sweat soldering, diameter 40mm；From 16 inner wall of plastic rectangular cylindrical mould
Water 15 is injected between pre-buried 4 outer wall of pvc pipe, and pre-buried pvc pipe 4 is kept to be located at 16 central axes of plastic rectangular cylindrical mould center
The heart, until water 15 fills the space between 4 outer wall of 8 inner wall of plastic rectangular cylindrical mould and pre-buried pvc pipe；In plastic rectangular
16 opening plastic plate 17 of cylindrical mould is loaded into heat sealing between 4 outer wall of mould inner wall and pvc pipe of 15 medium of water,
Ensure that water will not leak out；It is open along pre-buried pvc pipe 4 and inserts stemming 14 to tube bottom, stemming length 65cm, further along pre-buried PVC
4 nozzle of pipe is packed into explosion pack to filling bottom, wherein being the hair ms-3 detonator thunders of 150g and 1 comprising 2# rock emulsion explosives 7
Pipe 12, involves detonator, reuses stemming 14 and is open along pre-buried pvc pipe 4 and blocks, until by pre-buried pvc pipe 4 it is stifled completely obtain it is prefabricated
Aqueous medium powder charge module.Prefabricated aqueous medium powder charge module length and width are correspondingly placed into hollow girder steel, explosive pack position corresponds to pre-
Prefabricated aqueous medium powder charge module and hollow girder steel are fixed in 6 position of joint-cutting using length 380mm, width 12.6mm nylon binding bands,
Each bandage spacing distance 15cm since top.Being protected, evacuated and being guarded against etc. can detonate after preparation before detonation.
1 size of mold angle steel is 80mm*80mm*8mm, long 150cm in above-mentioned blasting method；Back cover steel electricity chip size is
10cm*10cm*1cm；6 long 40mm of pre- joint-cutting, width 5mm, along 5 right angle back of dismounting angle steel to be blasted；Plastic rectangular tubular
16 material of mold is polypropylene, cross sectional dimensions 78*78cm, thickness 3mm, long 150cm；4 size of pre-buried pvc pipe be long 150cm,
Diameter 40cm, wall thickness 3mm；Per 14 spaced loading 50g of 15cm stemmings, it is packed into 1 hair detonator, uses 150g2# rocks to emulsify in total fried
Medicine 7,3 sends out ms-3 Nonel detonators 12.Final test effect shearing length 63cm, destroys length 73cm.
Embodiment 7：Granule medium Prefabricated block
Make a mold angle steel 1 identical with 5 size of dismounting angle steel to be blasted, long 150cm；1 long side of mold angle steel is corresponded to
5 long side of dismounting angle steel to be blasted, short side correspond to after short side alignment using electric welding into hollow tubular girder steel, reuse steel plate washer
By hollow steel beam bottom back cover；From hollow steel beam length 50cm to 5 outside of dismounting angle steel to be blasted between 100cm every 5cm
It is cut into horizontal and vertical pre- joint-cutting 6, long 40mm, wide 5mm；PVC material cross sectional dimensions customized be 78*78cm, thickness 3mm,
The plastic rectangular cylindrical mould 16 of long 150cm；Sand medium 18, grain are poured into along 16 upper end opening of plastic rectangular cylindrical mould
Diameter is 0.25-0.35mm, to be poured into sand medium 18 settle after highly be 50cm after, from 16 opening of plastic rectangular cylindrical mould
It is inserted into a root long 105cm, the pre-buried pvc pipe 4 of diameter 40cm keeps pre-buried pvc pipe 4 to be located at hollow girder steel center, pre-buried PVC
It is 5cm that pipe 4, which is inserted into and has poured depth in sand medium 18,；Continue on 16 inner wall of plastic rectangular cylindrical mould and pre-buried PVC
Sand medium 18 is poured between 4 outer wall of pipe, until height is flushed with hollow girder steel open height after sand medium 18 settles.Along pre-buried
4 nozzle of pvc pipe is packed into explosion pack and arrives pre-buried pvc pipe 5, and wherein 2# rock emulsion explosives 7 are 150g, and charge positions are from bottom
At 50cm, point 3 sections of powder charges, every section of 50g, every section of airspace 15cm；3 hair ms-3 Nonel detonators.It carries out stemming blocking, prevent
It can detonate after preparation before the detonations such as shield, evacuation and warning.
1 size of mold angle steel is 80mm*80mm*8mm, long 150cm；Back cover steel plate washer size is 10cm*10cm*1cm；It is long
16 material of cube cylindrical mould is polypropylene, cross sectional dimensions 78*78cm, thickness 3mm, long 150cm；The grain size for pouring sand is
0.25-0.35mm；4 size of pre-buried pvc pipe is long 105cm, diameter 40cm, wall thickness 3mm；6 long 40mm of pre- joint-cutting, width 5mm, along
5 right angle back of dismounting angle steel to be blasted；Per 15cm underground borehole blasting 50g, it is packed into 1 hair detonator, uses 150g2# rocks in total
Emulsion 7,3 sends out ms-3 Nonel detonators.Final test effect shearing length 41cm, destroys length 42cm.
Claims (10)
1. a kind of Prefabricated block of demolition blasting steel angle structure, it is characterised in that including：
Mold angle steel, the mold angle steel are identical as dismounting angle steel model to be blasted；
It is assembled into hollow groove-shaped mold based on the mold angle steel；
Solid state medium, granule medium, fluid media (medium) are poured in the hollow groove-shaped mold, are poured and are situated between in the hollow groove-shaped mold
Pvc pipe is inserted into matter；
The pvc pipe is for being packed into pack；
The dismounting angle steel back to be blasted transverse cuts precracking；
The solid state medium is concrete, and granule medium is sand, and fluid media (medium) is water.
2. a kind of Prefabricated block of demolition blasting steel angle structure according to claim 1, it is characterised in that the solid-state is situated between
Matter is concrete, and mold angle steel is lain against ground by the hollow groove-shaped mold, using three block baffles by two width bottom edge of angle steel
It is assembled into the hollow groove-shaped mold of u shapes with corresponding length sky side；Concrete casting height is the hollow flute profile mold height half of u shapes
When, the pre-buried pvc pipe of a back cover is put on the concrete poured as pre-buried charging hole, pressing pre-buried pvc pipe makes it fall into
Enter casting concrete；One end closure of pvc pipe, another end opening, pvc pipe sealing is located in concrete, pvc pipe opening is longer than angle
Steel；Continue the placing concrete into u shapes hollow groove-shaped mold, until concrete height and two width of angle steel etc. after the completion of sedimentation
It is high；The concrete of pouring is conserved, waits being demoulded after the completion of conserving, the hollow groove-shaped mold of u shapes is opened and rejects three blocks of wood
Plate obtains the integral prefabricated module being made of concrete, pvc pipe and mold angle steel.
3. a kind of Prefabricated block of demolition blasting steel angle structure according to claim 1, it is characterised in that the solid-state is situated between
Matter is concrete, the hollow groove-shaped mold, is fixed opening direction as one with two pieces of identical mold angle steel opening directions
A hollow groove-shaped mold of column girder steel；The hollow groove-shaped mold of column girder steel is vertically placed, casting concrete；Casting concrete is high
When degree is the 1/3 ~ 1/2 of cylindrical hollow girder steel groove-shaped mold height, it is vertically inserted into pvc pipe, pvc pipe lower part back cover, upper opening,
Continue casting concrete along between cylindrical hollow girder steel groove-shaped mold inner wall and pvc pipe outer wall, until cylindrical hollow after sedimentation
Space filling between girder steel groove-shaped mold inner wall and pvc pipe outer wall is complete；The concrete of pouring is conserved, waits having conserved
It is demoulded after, rejects one block of mold angle steel, obtain the integral prefabricated mould being made of concrete, pvc pipe and mold angle steel
Block.
4. a kind of Prefabricated block of demolition blasting steel angle structure according to claim 2 or 3, which is characterized in that pre-buried PVC
Pipe central axes are overlapped with the hollow groove-shaped mold central axes of u shapes or pre-buried pvc pipe is located among the hollow groove-shaped mold of column girder steel,
Obtain the integral prefabricated module of central charge.
5. a kind of Prefabricated block of demolition blasting steel angle structure according to claim 2 or 3, which is characterized in that pre-buried PVC
It is pre-buried that pipe right angle in mold angle steel is close to angle steel side, obtains the integral prefabricated module of eccentric powder charge.
6. a kind of Prefabricated block of demolition blasting steel angle structure according to claim 1, it is characterised in that further include：
Cuboid-type box-like mold, the cuboid-type box-like mold bottom sealing, upper end opening are solid vertically close to mould inner wall
Surely a suction pipe is put into as reserved threading hole；It is cast with concrete in the cuboid-type box-like mold, it is pre- in concrete
Bury a reserved pvc pipe；Without concrete in the suction pipe inner cavity；
Demoulding is seperated prefabricated module after the completion of the cuboid-type box-like mold inner concrete maintenance；
Filling emulsion and Nonel detonator are seperated assembled powder charge module in the reserved pvc pipe；
The hollow groove-shaped mold, by mold angle steel identical with dismounting angle steel to be blasted and dismounting angle steel welding group to be blasted
At section is rectangle, and it is hollow that the hollow flute profile mold bottom uses the steel plate seamless welding with angle steel same material to obtain
Tubular girder steel；
The fission assembled powder charge module is packed into hollow tubular girder steel.
7. a kind of Prefabricated block of demolition blasting steel angle structure according to claim 6, it is characterised in that reserved pvc pipe position
In cuboid-type box-like mold centre, for the prefabricated module in seperated center；Alternatively, reserved pvc pipe is along cuboid pattern
It is pre-buried vertically that one right angle of tool is close to mould inner wall, for seperated eccentric assembling formula Prefabricated block.
8. a kind of Prefabricated block of demolition blasting steel angle structure according to claim 6, it is characterised in that the seperated dress
With formula powder charge mould reserved pvc pipe nozzle stemming in the block, the fission assembled powder charge module is packed into hollow tubular girder steel
It at least two pieces, is filled with stemming interval, the bottom of the hollow tubular girder steel welding between every piece of seperated assembled powder charge module
Stemming.
9. a kind of Prefabricated block of demolition blasting steel angle structure according to claim 1, it is characterised in that further include：
Plastic rectangular cylindrical mould, the plastic rectangular cylindrical mould with two number of edges of demolition blasting angle steel according to for it is long with
Width makes；The plastic rectangular cylindrical mould bottom seal, upper end opening；One is welded in plastic rectangular cylindrical mould bottom
A pre-buried pvc pipe with cylindrical mould equal length, pvc pipe central axes are overlapped with plastic rectangular type cylindrical mould；Along upper
End opening pours into aqueous medium between plastic rectangular cylindrical mould inner wall and pre-buried pvc pipe outer wall, until aqueous medium is full of modeling
Space between cuboid cylindrical mould inner wall and pre-buried pvc pipe outer wall is expected, in plastic rectangular cylindrical mould opening plastics
Plank is loaded into heat sealing between the mould inner wall of aqueous medium and pvc pipe outer wall；The pre-buried pvc pipe tube bottom tamping,
Centre is pack, pvc pipe nozzle stemming；As aqueous medium powder charge Prefabricated block；
The hollow groove-shaped mold, by mold angle steel identical with dismounting angle steel to be blasted and dismounting angle steel welding group to be blasted
At section is rectangle, and it is hollow that the hollow flute profile mold bottom uses the steel plate seamless welding with angle steel same material to obtain
Tubular girder steel；
The aqueous medium powder charge Prefabricated block is packed into hollow tubular girder steel.
10. a kind of Prefabricated block of demolition blasting steel angle structure according to claim 1, it is characterised in that further include：
Plastic rectangular cylindrical mould, the plastic rectangular cylindrical mould with two number of edges of demolition blasting angle steel according to for it is long with
Width makes；The plastic rectangular cylindrical mould bottom seal, upper end opening；The plastic rectangular cylindrical mould centre is pre-
It is embedded to the pre-buried pvc pipe that a root long degree is slightly higher than upper end opening, particle Jie is poured between pre-buried pvc pipe outer wall and mould inner wall
Matter, powder charge in the pre-buried pvc pipe, the pre-buried pvc pipe nozzle are blocked with stemming；As granule medium powder charge Prefabricated block；
The hollow groove-shaped mold, by mold angle steel identical with dismounting angle steel to be blasted and dismounting angle steel welding group to be blasted
At section is rectangle, and it is hollow that the hollow flute profile mold bottom uses the steel plate seamless welding with angle steel same material to obtain
Tubular girder steel；
The granule medium powder charge Prefabricated block is packed into hollow tubular girder steel.
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| CN201810505078.7A CN108547472B (en) | 2018-05-24 | 2018-05-24 | Prefabricated module of angle steel structure is demolishd in blasting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021050581A (en) * | 2019-09-26 | 2021-04-01 | 三井住友建設株式会社 | Demolition method of steel-frame reinforced concrete structure |
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| CN1072772A (en) * | 1991-11-22 | 1993-06-02 | 中国地质大学（北京） | Blasting method for rhombo-hedron |
| WO2004058584A2 (en) * | 2002-12-16 | 2004-07-15 | Velcro Industries B.V. | Attachable bags |
| JP2011007024A (en) * | 2009-06-24 | 2011-01-13 | Kyoto Supeesaa:Kk | Open-form holding bracket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2021050581A (en) * | 2019-09-26 | 2021-04-01 | 三井住友建設株式会社 | Demolition method of steel-frame reinforced concrete structure |
| JP7285184B2 (en) | 2019-09-26 | 2023-06-01 | 三井住友建設株式会社 | Dismantling method of steel reinforced concrete structure |
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| CN108547472B (en) | 2020-06-19 |
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