CN112049462A - Mechanical dismantling process for high-altitude building - Google Patents
Mechanical dismantling process for high-altitude building Download PDFInfo
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- CN112049462A CN112049462A CN202010789345.5A CN202010789345A CN112049462A CN 112049462 A CN112049462 A CN 112049462A CN 202010789345 A CN202010789345 A CN 202010789345A CN 112049462 A CN112049462 A CN 112049462A
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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
Abstract
The invention discloses a mechanical demolition process for a high-altitude building, which belongs to the technical field of mechanical demolition and comprises the following steps: scheme formulation before construction, implementation of safety measures and technical measures; processing, manufacturing and dismantling the tool; installing pulley block hoisting materials and positioning a safety steel wire rope; erecting a suspension operation platform; dismantling the lightning protection facility; dismantling a building; the suspension operation platform is moved to the next construction surface; dismantling the building to the ground level; and (5) cleaning the site. According to the invention, the dismantling tool is designed, and the dismantling tool and the manual working platform are combined to form the suspended operation platform, so that the dismantling operation of the hook machine on a high-altitude building is realized, the building dismantling speed is increased, and the safety is also improved; the hooking machine is matched with manpower to realize the quick and safe demolition of the high-rise building, the demolition work period is shortened, the potential safety hazard is reduced, and the manual demolition process is converted into the mechanical demolition process.
Description
Technical Field
The invention relates to the technical field of mechanical demolition, in particular to a mechanical demolition process for a high-altitude building, which is suitable for demolition operation of a cylindrical high-altitude building.
Background
At present, industry, living areas, high buildings, buildings and the like are increasingly aged and need to be transformed, old structures, damaged buildings and the like need to be transformed, demolished objects are more, demolition of high-rise structures such as the high buildings, chimneys, water towers and the like is quite difficult, demolition by blasting pollutes the environment, the demolition objects cannot be reused, and meanwhile, safety cannot be absolutely guaranteed.
In the prior art, there are generally four methods for dismantling a towering structure: 1. blasting and dismantling; 2. mechanically dismantling; 3. the whole body is laid down and dismantled; 4. and (5) manually dismantling. The four methods use different tools or machines, have different costs and different advantages and disadvantages, but under the conditions of site limitation or harm to other surrounding buildings and equipment environments, the manual dismantling method is common, the tools adopted by the manual dismantling are mainly air picks, the air picks directly pull the air compression pipe to the working surface from the ground, and the air compressor is placed at the position of 0 meter, so that the difficulty is high. In order to shorten the demolition work period and reduce the potential safety hazard, a manual demolition process can be converted into a mechanical demolition process, and therefore a novel mechanical demolition process with high safety for demolishing a high-rise structure is required.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a mechanical demolition process for a high-altitude building, which realizes the quick and safe demolition of the high-rise building by designing a suspension operation platform and fully utilizing the cooperation of a hook machine and manpower.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a mechanical demolition process for a high-altitude building comprises the following steps:
(1) scheme formulation before construction, implementation of safety measures and technical measures;
(2) processing, manufacturing and dismantling the tool;
(3) installing pulley block hoisting materials and positioning a safety steel wire rope;
(4) erecting a suspension operation platform;
(5) dismantling the lightning protection facility;
(6) dismantling a building;
(7) the suspension operation platform is moved to the next construction surface;
(8) dismantling the building to the ground level;
(9) and (5) cleaning the site.
The technical scheme of the invention is further improved as follows: in the step (1), the safety measures comprise that a circle of funnel-shaped protection net is installed on the periphery of the building, and the bottom and the suspended part are protected by rubber leather and a belt on the periphery.
The technical scheme of the invention is further improved as follows: in the step (2), the dismantling tool comprises a platform frame made of section steel, a mechanical base made of a thick steel plate and the section steel which are connected to the middle bottom of the platform frame through bolts, a hook machine installed on the mechanical base and a storage platform arranged at the other end of the platform frame; the hooking machine is hydraulically connected and reinforced with the mechanical base and the platform frame to form a whole; one side of one end of the platform frame is provided with a hook machine accessory replacing groove for replacing a hook machine shovel and a chisel head of the hook machine; the other side of one end of the platform frame is provided with a winch mounting part; the middle of the object placing platform is provided with a hook machine wall, and one end of the object placing platform is provided with an oxygen bottle matched with an oxygen belt; the other end is provided with an acetylene cylinder matched with the acetylene belt; the hook machine is hoisted to the mechanical base and is pulled to form a fixing frame, the hook machine hydraulic cylinder is fixedly connected with the mechanical base, and the hook machine and the platform frame are integrated.
The technical scheme of the invention is further improved as follows: the platform frame is made of 2H 350 steel sections and 175H 220 steel sections and 110 steel sections.
The technical scheme of the invention is further improved as follows: and reinforcing steel bars are arranged on two sides of the hook machine and welded with the platform frame.
The technical scheme of the invention is further improved as follows: in the step (4), the erection of the suspension operation platform specifically comprises the following steps:
4.1, firstly, manufacturing two layers of hoops and corresponding triangular supports by using flat steel on the basis of the outer diameter of the upper part of the demolished building;
4.2 lifting the wrapping hoop by an operator up to the top of the building;
4.3 installing a shroud ring and setting up a manual working platform;
4.4, an operator opens four U-shaped notches meeting the size requirement of the dismantling tool at the top end of the building by using electric picks on the manual working platform, and the dismantling tool is hoisted to the four U-shaped notches;
4.5 the suspension operation platform is set up.
The technical scheme of the invention is further improved as follows: in the step (6), the dismantling is started, the dismantling height of each section is 1.2 m, a suspension operation platform is adopted, the height of a platform guard rail is 1.0 m, the middle part and the top part of the guard rail pass through a phi 18 palm rope through a phi 22 nut hole to form a circle, the suspension operation platform is moved downwards after each section is dismantled, and the dismantling is performed to the ground by analogy; the method comprises the following specific steps:
6.1 demolishing the building layer by layer from the top downwards;
6.2 after the constructor demolishs the building within the range of 1.2 meters above, descending the suspension operation platform to be re-erected on the next hoop under the condition of safety belt double insurance;
6.3, downward moving construction of the operating platform: the method comprises the steps of firstly moving a spare hoop downwards by about 1.5 meters, then placing two triangular supports for turnover on two sides of a ladder, after wood boards are fully laid on the two supports, then placing the triangular supports and the wood boards one by one on two sides, finally installing protective guards, erecting a next operation platform, checking and confirming safety, then carrying out next section of building dismantling work, and so on to dismantle the building downwards.
The technical scheme of the invention is further improved as follows: and (6) cleaning the demolished waste residues at night and in time to prevent siltation, and cleaning the demolished waste residues daily.
The technical scheme of the invention is further improved as follows: each band interface bolt uses two layers of platforms and must be replaced with a new bolt.
Due to the adoption of the technical scheme, the invention has the technical progress that:
1. according to the invention, the dismantling tool is designed, and the dismantling tool and the manual working platform are combined to form the suspended operation platform, so that the dismantling operation of the hook machine on a high-altitude building is realized, the building dismantling speed is increased, and the safety is also improved.
2. According to the invention, the operation platform is hung, the hooking machine and the manual work are fully utilized to realize the quick and safe demolition of the high-rise building, the demolition operation period is shortened, the potential safety hazard is reduced, and the manual demolition process is converted into the mechanical demolition process.
Drawings
FIG. 1 is a schematic structural view of a demolition tool of the present invention;
figure 2 is a schematic view of the position of the hooking machine of the present invention.
The device comprises a platform frame 1, a platform frame 2, a mechanical base 3, a hooking machine 4, a storage platform 5, a hooking machine accessory replacement groove 6, a hooking machine wall 7, an oxygen cylinder 8, an acetylene cylinder 9, a field winding machine installation part 10 and bolts.
Detailed Description
The invention relates to a mechanical demolition process of a high-altitude building, which is developed aiming at the problems that when the existing industry and buildings are demolished, the manual demolition is all performed aloft, and the probability of potential safety hazards is high, and is particularly suitable for demolition operation of the high-altitude building in a cylindrical shape.
The invention will be described in further detail below with reference to figures 1 and 2 and the removal of the concrete brick chimney.
As shown in fig. 1 and 2, a mechanical demolition process for a high-altitude building includes the following steps:
(1) scheme formulation before construction, implementation of safety measures and technical measures; the safety measures include, but are not limited to, installing a ring of funnel-shaped protection net on the periphery of the building, and protecting the bottom and the suspended part by using rubber leather and a belt on the periphery.
(2) Processing, manufacturing and dismantling the tool; the dismantling tool comprises a platform frame 1 made of section steel, a mechanical base 2 made of a thick steel plate and the section steel connected to the middle bottom of the platform frame 1 through a bolt 10, a hook machine 3 installed on the mechanical base 2 and a storage platform 4 arranged at the other end of the platform frame 1; the hook machine 3 is hydraulically connected and reinforced with the mechanical base 2 and the platform frame 1 to form a whole; one side of one end of the platform frame 1 is provided with a hooking machine accessory replacing groove 5 for replacing a hooking machine shovel and a chisel head of the hooking machine 3; the other side of one end of the platform frame 1 is provided with a winch mounting part 9; the middle of the object placing platform 4 is provided with a hook machine wall 6, and one end of the object placing platform is provided with an oxygen bottle 7 matched with an oxygen belt; the other end is provided with an acetylene cylinder 8 matched with the acetylene belt, and the other end can be provided with the acetylene cylinder and the matched acetylene belt, so that convenience is provided for cutting top steel and reinforcing steel bars; the hook machine 3 is hoisted to the mechanical base 2 and is provided with a fixed frame in a pulling way, the hydraulic cylinder of the hook machine 3 is fixedly connected with the mechanical base 2, and the hook machine 3 and the platform frame 1 are integrated into a whole; the platform frame 1 is made of 2H 350 steel sections and 175 steel sections and 4H 220 steel sections and 110 steel sections; 3 both sides of hook machine respectively set up the reinforcing bar and are in the same place with the welding of platform frame 1, strengthen the stability of hook machine 3, prevent to rock. The specific size of the demolition tool is designed according to the size of a building to be demolished.
(3) Installing pulley block hoisting materials and positioning a safety steel wire rope;
(4) erecting a suspension operation platform;
4.1, firstly, manufacturing two layers of hoops and corresponding triangular supports by using flat steel on the basis of the outer diameter of the upper part of the demolished building;
4.2 lifting the wrapping hoop by an operator up to the top of the building;
4.3 installing a shroud ring and setting up a manual working platform; the requirement of the hoop joint bolt is as follows: in order to prevent the use fatigue of the bolts, after each bolt is turned over twice (namely two layers of platforms are used), a new bolt must be replaced;
4.4, an operator opens four U-shaped notches meeting the size requirement of the dismantling tool at the top end of the building by using electric picks on the manual working platform, and the dismantling tool is hoisted to the four U-shaped notches; and finishing the erection of the suspension operation platform.
(5) Dismantling the lightning protection facility; firstly, the chimney lightning rod facility is dismantled, then the lightning rod is installed on the operation platform, and the redundant part is cut by a grinding machine and is thrown into a chimney well.
(6) Dismantling a building;
6.1 demolishing the building layer by layer from the top downwards;
6.2 after the constructor demolishs the building within the range of 1.2 meters above, descending the suspension operation platform to be re-erected on the next hoop under the condition of safety belt double insurance;
6.3 hanging the operating platform and moving downwards: the method comprises the steps of firstly moving a spare hoop downwards by about 1.5 meters, then placing two triangular supports for turnover on two sides of a ladder, after wood boards are fully laid on the two supports, then placing the triangular supports and the wood boards one by one on two sides, finally installing protective guards, erecting a next suspension operation platform, checking and confirming safety, then carrying out next section of building dismantling work, and so on to dismantle the building downwards. The demolished waste residues are cleaned at night in time to prevent silting, so that daily cleaning is realized; and (4) removing the chimney in the day, and clearing and transporting the garbage removed in the day at night.
(7) The suspension operation platform is moved to the next construction surface;
(8) dismantling the building to the ground level;
(9) and (5) cleaning the site.
The specific embodiment is as follows:
the building is a brick chimney, the height is about 60 meters, and the diameter of the top of the chimney is 3 meters; the diameter of the bottom of the chimney is 6 meters.
1. Scheme formulation before construction, implementation of safety measures and technical measures;
(1) the construction operation is mainly characterized by preparing safety protection measures, making a construction scheme in advance, and executing the construction safety measures once according to the construction scheme.
(2) Because the building is in idle and production stop state within the range of 10 meters around the chimney, a safety forbidden area is set within the range of 10 meters around the chimney through negotiation with an owner unit, and the approach of non-safety monitoring personnel is strictly forbidden. Warning boards are hung at the entrance and exit of constructors, and the constructors are provided with striking signs and specially-assigned persons for watching.
(3) For pedestrians on the ground, the pedestrians cannot enter the safety warning line, and the safety warning line is 10 meters.
(4) The method comprises the steps of removing an ash cleaning port at the bottom of a chimney, cleaning accumulated ash and garbage at the bottom of the chimney, punching the bottom of the chimney by using a hook machine, taking out waste residues by using the hook machine so as to facilitate the waste residues for removing the chimney to be automatically discharged out of the chimney, avoiding flue blockage and facilitating cleaning, removing the chimney in the daytime, and cleaning the garbage removed on the same day (about 40 cubic meters of building garbage) at night.
(5) All field managers and operators receive safety education and meet the requirements of safety and technology.
(6) Hidden danger investigation and safety measure preparation before operation.
Constructors enter the site to check the climbing ladder one by one, and the ladder is required to be reinforced in time when finding that the ladder is loosened or rusted seriously. The outer ladder stand reserved in the original chimney is used for personnel vertical transportation and safety insurance so as to ensure safety. All the people going up and down the chimney must wear the safety belt, and the safety belt is buckled on the ladder stand or the rest platform and the operation platform when the people have a rest in the midway.
(7) Communication system
All managers such as project managers, project assistant managers, project technical responsible persons, quality control responsible persons and the like are equipped with mobile phones and interphones, so that construction management and command scheduling in fields are facilitated.
(8) Constructor entering field
The management and support personnel are as follows:
the project responsible person 1 is responsible for the construction of the project;
1 technical responsible person organizes, coordinates and supervises the measurement task;
the safety officer 1 is responsible for construction safety production management;
electricians 1 person, and production and life electric wires are installed and maintained;
6, a mechanic carries out chiseling, cleaning and outward transportation on a chimney;
2 drivers are responsible for lifting the hook machine, hanging the operation platform and hooking the machine drivers.
The engineering constructor has high quality, stable technical level and reasonable technical grade composition, and effectively provides human resource guarantee for the engineering quality.
Secondly, the construction time of the project is short, the manpower is concentrated, systematic management needs to be equipped, and the production labor needs to be sufficiently equipped.
2. Frock is demolishd in processing preparation
As shown in fig. 1, the required operating tools, materials: preparing a component in advance, and using materials: h-shaped steel H350 × 175, 8500mm × 2; h shaped steel H220 110, 2150mm 4, forms platform frame 1, specifically: from left to right, the distance between the first H-shaped steel H220 and 110 and the second H-shaped steel 220 and 110 is 2700mm, the distance between the second H-shaped steel H220 and 110 and the third H-shaped steel 220 and 110 is 2200mm, and the distance between the third H-shaped steel H220 and 110 and the fourth H-shaped steel 220 and 110 is 2850 mm;
adding an S =8mm thick steel plate (length and width =2150mm 1600 mm) in the middle of the platform frame 1, arranging the steel plate between the second H-shaped steel H220X 110 and the third H220X 110 to form a mechanical base 2, connecting the base and the shaped steel through M22 bolts, and hydraulically connecting and reinforcing the hook machine 3, the mechanical base 2 and the H220X 110 shaped steel to form a whole; meanwhile, 3 pieces of phi 22 steel bars are used on one side of the two sides of the hook machine 3 to increase the mechanical strength, enhance the stability of the hook machine 3 and prevent shaking; adding an S =8mm (length and width =2150mm 650 mm) steel plate on the other side of the platform frame 1, manufacturing a placing platform 4 near a fourth H-shaped steel 220 x 110, placing a hook machine wall 6 on the placing platform 4, and placing an oxygen cylinder 7 matched with an oxygen belt on one side of the platform; the other side can be provided with an acetylene cylinder 8 matched with an acetylene belt, so that convenience is provided for cutting top steel and reinforcing steel bars; one side of one end of the platform frame 1 is provided with a hooking machine accessory replacing groove 5 for replacing a hooking machine shovel and a chisel head of the hooking machine 3, and the hooking machine shovel and the chisel head can be replaced at the upper part; the other side of one end of the platform frame 1 is provided with a winch mounting part 9 which is an upper layer channel steel and a lower layer channel steel with the length of 350mm, and round steel is inserted into a round hole to mount a winch, so that tools and materials can be conveniently lifted; and finally, hoisting the hooking machine 3 to the mechanical base 2, and pulling a fixed frame, wherein the hooking machine hydraulic cylinder is fixedly connected with the mechanical base 2. The hook machine 3 is formed mechanically integral with the platform frame 1, as shown in figure 2.
3. Installing pulley block hoisting materials and positioning a safety steel wire rope;
(1) a specific installation procedure of the pulley block: the operator carries the coir rope and a pulley block to ascend the top of the chimney along the ladder stand → the pulley block is fixed on the ladder stand → the coir rope passes through the pulley block to be placed on the ground → the installation is completed → a hoisting tool and materials are hoisted.
(2) Safety steel cable positioning
Double insurance is required: firstly, a strap type safety belt and secondly a waist-binding safety rope. Firstly, an operator fastens one end of a safety rope with the diameter phi of 20 on a ladder stand (each person fastens one ladder stand, the length of the safety rope is half of the perimeter of the current chimney after being disassembled), fastens one end of the safety rope on the waist, then hoops a steel wire rope with the diameter phi of 18 on the surface of an operation platform along the outer circumference of the chimney, tightens the steel wire rope by a tightener (a proper amount of looseness exists between the steel wire rope and the wall of the chimney, and 3 saddle openings are used for closing up), and then fastens a strap type safety belt buckle on the steel wire rope. After the double-insurance work is finished, the operator can carry out the installation work of the cantilever operation platform and the chimney dismantling construction.
4. Erecting a suspension operation platform;
(1) firstly, on the basis of the outer diameter of the upper part of a demolished building (brick chimney), two layers of hoops are manufactured by adopting 7 multiplied by 70 flat steel, L7 multiplied by 70 angle steel with the length of 70mm is welded on the hoops every 0.9 m, a phi 20 insertion hole is drilled in the middle of the angle steel surface, and two phi 20 insertion holes are drilled in the vertical direction on the angle steel at the two sides of the joint of each layer of hoops. The height difference of the two hoops on the chimney is 1.5 m (the perimeter difference is about 0.3 m), so 19 hoops with connecting semicircles of different lengths are required to be manufactured.
(2) The connecting holes of the suspension bracket are uniformly arranged around the shroud ring, the suspension connecting holes are made of L7 multiplied by 70 angle steel, and the suspension connecting holes are welded on the shroud ring at intervals of about 90 cm.
(3) A cross rod, an inclined rod and a web member are made of phi 18 round steel, a triangular support with the surface length of 95cm, the root width of 20cm and the root height of 50cm is manufactured, one end of the triangular support is hooked in an angle iron phi 20 inserting hole, and the periphery of the triangular support is supported.
(4) The first installation procedure of the manual working platform: 2 operators wear safety ropes to reach the top of a chimney → the safety belts are fastened on a ladder stand → the operators tighten a phi 18 steel wire rope along the periphery of the chimney on a rest platform (a proper amount of looseness exists between the steel wire rope and the wall of the chimney, 3 saddle openings are used for closing the opening) → the operators add a waist rope, the other end of the waist rope is fastened on the ladder stand, then a back belt type safety belt buckle ring is buckled on the steel wire rope → the lifting and hooping are carried out to the top of the chimney and then the rope is lifted and placed to the position of 48.5 m (the bottom of a chimney cap), one person tightens the two connectors of the wrapping hoop in sequence at the position by using bolts → two triangular supports for turnover are arranged on the two sides of the ladder stand firstly → the two supports are fully paved with boards with the specification of 50 multiplied by 250 multiplied by 1500 and fixed on the triangular supports by using ropes → an operator stands on the first platform and then arranges the triangular supports and the boards one by one along the periphery of the chimney on one side of the first platform → the upright posts of the protective fence and the safe dense net are arranged → the manual working platform is arranged.
(5) An operator opens four U-shaped notches meeting the size requirement of a dismantling tool at the top end of a building by using electric picks on a manual working platform, and the dismantling tool is hoisted to the four U-shaped notches; and finishing the erection of the suspension operation platform.
5. Dismantling the lightning protection facility; firstly, the chimney lightning rod facility is dismantled, then the lightning rod is installed on the suspension operation platform, and the redundant part is cut by a grinding machine and is thrown into a chimney well.
6. Dismantling a building;
(1) after the safety personnel check that the construction is correct, the construction can be carried out by standing on the suspension operation platform, 50X 250X 1500 specification wood boards are fully paved on the triangular support, the triangular support is fixed by ropes, a railing is arranged outside the suspension support, a safety net is suspended, and the construction personnel carry out the construction on the suspension operation platform erected by the construction personnel.
(2) When the ladder is dismantled, the safety rope is tied at the bottom end of the dismantling section of the ladder stand, and meanwhile, the safety rope cannot be impacted by waste brick slag when the ladder is dismantled.
(3) The demolition tool uses tools such as a hook machine, a sledge hammer, a chisel and the like, and two persons are matched in a group to carry out demolition construction.
(4) The barrel body is dismantled from the top downwards layer by layer, an electric pick is used for opening a U-shaped notch, a steel bar shear is used for shearing ring ribs and vertical ribs, a hammer is used for changing the ring ribs and the vertical ribs into small blocks, and then the small blocks are thrown downwards along the inner wall of the chimney.
(5) The dismantled waste brick slag is cleaned at night and in time to prevent silting, and the purpose of cleaning the waste brick slag on the day is achieved.
7. The suspension operation platform is moved to the next construction surface;
(1) after the constructor removes the chimney within the range of 1.2 meters above, the manual operation platform is lowered under the condition of safety belt double insurance and is erected on the next shroud ring again.
The operation platform moves downwards for construction: firstly, a spare hoop is downwards moved by about 1.5 m, then two triangular supports for turnover are firstly arranged on two sides of the ladder, after wood plates are fully paved on the two supports, the triangular supports and the wood plates are arranged on two sides one by one, and finally the protective guard is installed. And after the next operation platform is set up and is checked to confirm safety, the next section of chimney is dismantled, and the chimney is dismantled downwards by analogy.
(2) The requirement of the hoop joint bolt is as follows: to prevent fatigue in the use of the bolts, a new bolt must be replaced after each bolt has been turned twice (i.e., two stages are used).
8. Dismantling the building to the ground level;
9. and (5) cleaning the site.
In conclusion, the dismantling tool is designed, and the dismantling tool and the manual working platform are combined to form the suspended operation platform, so that the dismantling operation of the hook machine on a high-altitude building is realized, the building dismantling speed is increased, and the safety is also improved; the hook machine is matched with manpower to realize the quick and safe demolition of the high-rise building, the demolition work period is shortened, the potential safety hazard is reduced, and the manual demolition process is converted into a mechanical demolition process.
Claims (9)
1. A mechanical dismantling process for a high-altitude building is characterized by comprising the following steps: the method comprises the following steps:
(1) scheme formulation before construction, implementation of safety measures and technical measures;
(2) processing, manufacturing and dismantling the tool;
(3) installing pulley block hoisting materials and positioning a safety steel wire rope;
(4) erecting a suspension operation platform;
(5) dismantling the lightning protection facility;
(6) dismantling a building;
(7) the suspension operation platform is moved to the next construction surface;
(8) dismantling the building to the ground level;
(9) and (5) cleaning the site.
2. The mechanical demolition process of a high-altitude building according to claim 1, wherein: in the step (1), the safety measures comprise that a circle of funnel-shaped protection net is installed on the periphery of the building, and the bottom and the suspended part are protected by rubber leather and a belt on the periphery.
3. The mechanical demolition process of a high-altitude building according to claim 1, wherein: in the step (2), the dismantling tool comprises a platform frame (1) made of section steel, a mechanical base (2) made of a thick steel plate connected with the section steel through a bolt (10) and the bottom of the middle of the platform frame (1), a hooking machine (3) installed on the mechanical base (2) and a storage platform (4) arranged at the other end of the platform frame (1); the hook machine (3) is hydraulically connected and reinforced with the mechanical base (2) and the platform frame (1) to form a whole; one side of one end of the platform frame (1) is provided with a hook machine accessory replacing groove (5) for replacing a hook machine shovel and a chisel head of the hook machine (3); the other side of one end of the platform frame (1) is provided with a winch mounting part (9); a hook machine wall (6) is arranged in the middle of the storage platform (4), and an oxygen bottle (7) matched with an oxygen belt is arranged at one end of the storage platform; the other end is provided with an acetylene cylinder (8) matched with the acetylene belt; the hook machine (3) is hoisted to the mechanical base (2) and is pulled to form a fixed frame, a hydraulic cylinder of the hook machine (3) is fixedly connected with the mechanical base (2), and the hook machine (3) and the platform frame (1) are integrated.
4. A mechanical demolition process of a high-altitude building according to claim 3, characterized in that: the platform frame (1) is made of 2H 350 steel sections and 175H 220 steel sections and 110 steel sections.
5. A mechanical demolition process of a high-altitude building according to claim 3, characterized in that: the two sides of the hook machine (3) are respectively provided with a steel bar which is welded with the platform frame (1).
6. The mechanical demolition process of a high-altitude building according to claim 1, wherein: in the step (4), the erection of the suspension operation platform specifically comprises the following steps:
4.1, firstly, manufacturing two layers of hoops and corresponding triangular supports by using flat steel on the basis of the outer diameter of the upper part of the demolished building;
4.2 the operator goes up to the top of the building to hoist the shroud ring and the corresponding triangular bracket;
4.3 installing a shroud ring and setting up a manual working platform;
4.4, an operator opens four U-shaped notches meeting the size requirement of the dismantling tool at the top end of the building by using electric picks on the manual working platform, and the dismantling tool is hoisted to the four U-shaped notches; and finishing the erection of the suspension operation platform.
7. The mechanical demolition process of a high-altitude building according to claim 1, wherein: in the step (6), the dismantling is started, the dismantling height of each section is 1.2 m, a suspension operation platform is adopted, the height of a platform guard rail is 1.0 m, the middle part and the top part of the guard rail penetrate through phi 18 palm ropes to form a circle through phi 22 nut holes, the suspension operation platform is moved downwards after each section is dismantled, and the dismantling is performed to the ground in the same way; the method comprises the following specific steps:
6.1 demolishing the building layer by layer from the top downwards;
6.2 after the constructor demolishs the building within the range of 1.2 meters above, descending the suspension operation platform to be re-erected on the next hoop under the condition of safety belt double insurance;
6.3 hanging the operating platform and moving downwards: the method comprises the steps of firstly moving a spare hoop downwards by about 1.5 meters, then placing two triangular supports for turnover on two sides of a ladder, after wood boards are fully laid on the two supports, then placing the triangular supports and the wood boards one by one on two sides, finally installing protective guards, erecting a next suspension operation platform, checking and confirming safety, then carrying out next section of building dismantling work, and so on to dismantle the building downwards.
8. The mechanical demolition process of a high-altitude building according to claim 1, wherein: and (6) cleaning the demolished waste residues at night and in time to prevent siltation, and cleaning the demolished waste residues daily.
9. A mechanical demolition process of a high-altitude building according to any one of claims 6 or 7, wherein: each band interface bolt uses two layers of platforms and must be replaced with a new bolt.
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| CN202010789345.5A CN112049462A (en) | 2020-08-07 | 2020-08-07 | Mechanical dismantling process for high-altitude building |
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| CN202010789345.5A Pending CN112049462A (en) | 2020-08-07 | 2020-08-07 | Mechanical dismantling process for high-altitude building |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114989837A (en) * | 2022-05-27 | 2022-09-02 | 鞍钢股份有限公司 | Method for disassembling and disassembling refractory material of dry quenching furnace |
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| CN114989837A (en) * | 2022-05-27 | 2022-09-02 | 鞍钢股份有限公司 | Method for disassembling and disassembling refractory material of dry quenching furnace |
| CN114989837B (en) * | 2022-05-27 | 2024-01-09 | 鞍钢股份有限公司 | Method for disassembling and taking off dry quenching furnace refractory |
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