CN115288408A - Construction platform for blasting demolition of high-rise cylindrical structure and construction method thereof - Google Patents
Construction platform for blasting demolition of high-rise cylindrical structure and construction method thereof Download PDFInfo
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- CN115288408A CN115288408A CN202210902255.1A CN202210902255A CN115288408A CN 115288408 A CN115288408 A CN 115288408A CN 202210902255 A CN202210902255 A CN 202210902255A CN 115288408 A CN115288408 A CN 115288408A
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
- E04G3/305—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables specially adapted for tanks, silos or similar vessels
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
- E04G3/32—Hoisting devices; Safety devices
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
- E04G5/142—Railings extensible or telescopic
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- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- 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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- 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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G2003/286—Mobile scaffolds; Scaffolds with mobile platforms mobile vertically
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Movable Scaffolding (AREA)
Abstract
The invention belongs to the technical field of construction blasting, and particularly relates to a construction platform for blasting demolition of a high-rise cylindrical structure and a construction method thereof. The construction platform comprises a suspension structure positioned at the top of a cylindrical structure, an annular working platform and an auxiliary hanging basket, wherein the annular working platform and the auxiliary hanging basket can freely extend and descend, and the suspension structure, the working platform and the auxiliary hanging basket are connected by adopting a plurality of suspension steel wire ropes. Annular work platform, supplementary hanging flower basket assemble subaerial, then along hanging in midair the vertical climbing of wire rope, reach the specific high position of tube-shape structure after, flexible adjustment makes the platform hug closely the tube-shape structure outer wall, carries out the operation of punching, then climbs to the next operation position of punching and carries out the operation of punching, reaches the highest operation position, accomplishes whole operation of punching after, progressively descends and carries out the powder charge and the pin connection operation of explosive. The auxiliary hanging basket is used as a personnel and material transportation measure in the construction process. And (4) disassembling the platform after the platform falls back to the ground, and finally blasting and disassembling the cylindrical structure.
Description
Technical Field
The invention belongs to the technical field of construction blasting, and particularly relates to a construction platform for blasting demolition of a high-rise cylindrical structure and a construction method thereof.
Background
The main methods for blasting demolition of the existing high-rise cylindrical structures (such as a chimney, a silo, a water tower, a cooling tower and the like) comprise directional blasting demolition and folding blasting demolition, wherein the directional blasting demolition is to form a wedge-shaped notch with a plane sector angle larger than 180 degrees at the bottom of the cylindrical structure so that the cylindrical structure is unstable integrally and topples and collapses in a preset direction, and the method is simple in construction, but a site required by toppling and collapsing is large; the folding blasting is based on the bottom wedge-shaped notch of the directional blasting, the notch is additionally arranged at the middle section of the cylindrical structure, so that the cylindrical structure is divided into two sections during blasting and topples and collapses in opposite directions, the requirement on a toppling site is partially reduced, but the scheme increases the construction of arranging blast holes at high altitude, and the implementation difficulty is higher than that of the directional blasting.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a construction platform for blasting demolition of a high-rise cylindrical structure is provided, which can assist blasting operators to safely and efficiently move on the vertical height of the cylindrical structure, and greatly improve the operation speed of the blasting demolition work of the cylindrical structure.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a construction platform for blasting demolition of a high-rise cylindrical structure comprises an annular working platform 1, a suspension structure 2 and an auxiliary hanging basket 4, wherein the annular working platform 1 is sleeved outside the cylindrical structure 6, the suspension structure 2 is fixed at the top of the cylindrical structure 6, the auxiliary hanging basket 4 is arranged between the annular working platform 1 and the cylindrical structure 6, and the annular working platform 1 and the auxiliary hanging basket 4 are connected with the suspension structure 2 through a suspension steel wire rope 3;
the annular working platform 1 is connected with a first lifting system and used for driving the annular working platform 1 to move in the vertical direction relative to the suspension structure 2, and the auxiliary hanging basket 4 is connected with a second lifting system and used for driving the auxiliary hanging basket 4 to move in the vertical direction relative to the suspension structure 2;
the annular working platform 1 is a telescopic structure and can be extended and contracted in the horizontal direction by taking the central axis of the cylindrical structure 6 as the center, the size of the telescopic structure is matched with the diameter of the cylindrical structure 6 at the same height, and a plurality of annular notches 5 are formed in the cylindrical structure 6.
Further, the planar shape of the annular working platform 1 is a polygonal symmetrical structure, the annular working platform 1 comprises a platform fixing section 101 with fixed length and a platform telescopic section 102 with variable length, the platform fixing sections 101 are connected through a first corner connecting piece 103, the platform fixing section 101 and the platform telescopic section 102 are connected through a second corner connecting piece 104, and a vertical ladder stand 7 is arranged on the outer wall of the cylindrical structure 6 corresponding to the first corner connecting piece 103.
Furthermore, one side of the annular working platform 1, which is close to the cylindrical structure 6, is provided with a plurality of telescopic support rods 111, and after the annular working platform 1 moves to a working position along the vertical direction, the telescopic support rods 111 extend out and abut against the outer wall of the cylindrical structure 6.
Further, the number of the platform fixing sections 101, the platform telescopic sections 102, the first corner connectors 103 and the second corner connectors 104 is adapted to the size of the cylindrical structure 6.
Further, one end of the second corner connecting piece 104 is connected with the platform fixing section 101, the other end of the second corner connecting piece is connected with the platform telescopic section 102 in a sliding mode through a limiting and drag reduction sliding connecting piece 108, a driving oil cylinder 107 is arranged in the middle of the platform telescopic section 102, the driving oil cylinder 107 is connected with the second corner connecting pieces 104 at two ends of the platform telescopic section 102 through a sliding sleeve 106, and the second corner connecting pieces 104 at two ends are driven to slide relative to the platform telescopic section 102 by taking the driving oil cylinder 107 as a center, so that the platform fixing sections 101 at two ends of the platform telescopic section 102 are driven to slide in a telescopic mode; sliding butt straps 105 are arranged on two sides of the platform telescopic section 102, scissors support rods 110 are arranged inside the sliding butt straps 105, and a sliding opening 109 is formed in the platform fixing section 101 and used for enabling the end portion of the platform telescopic section 102 to penetrate through the platform fixing section 101.
Furthermore, 2N suspension points 112 are uniformly arranged on the annular working platform 1 along the circumferential direction, each suspension point 112 is connected with a first lifting system at the top of the cylindrical structure 6 through two suspension steel wire ropes 3, each first lifting system comprises a lifting machine and an inclination angle type safety lock, the two suspension steel wire ropes 3 are respectively a main steel wire rope and an auxiliary steel wire rope, the main steel wire rope is connected with a rope winding wheel of the lifting machine, and the auxiliary steel wire rope is connected with the inclination angle type safety lock.
Furthermore, the inclination angle type safety lock comprises a rope pressing wheel and a safety lock, the rope pressing wheel is in contact with the main steel wire rope, and when the main steel wire rope is loosened, the safety lock can lock the auxiliary steel wire rope.
Furthermore, the first lifting system is electrically connected with an automatic control system, the automatic control system comprises an encoder, a level sensor, a weighing sensor and a stay wire displacement meter, the encoder, the level sensor, the weighing sensor and the stay wire displacement meter are respectively used for monitoring the lifting distance, the relative height difference, the load weight and the length of the telescopic section of each suspension point, and the automatic control system is used for adjusting the running speed of the lifting machine in real time and is provided with the functions of stopping and alarming.
Further, the width of supplementary hanging flower basket 4 is less than annular work platform 1 and tube-shape structure 6's minimum interval, when supplementary hanging flower basket 4 is in same height with annular work platform 1, supplementary hanging flower basket 4 pass through platform connecting device 401 with annular work platform 1 is connected fixedly, the position that corresponds on annular work platform 1 and the supplementary hanging flower basket 4 is equipped with annular hanging flower basket railing 113 that can open and shut and supplementary hanging flower basket railing 402 that can open and shut respectively.
A construction method for demolishing a cylindrical structure by blasting comprises the following steps based on the construction platform:
s1, cleaning and leveling the bottom of a cylindrical structure, and assembling an annular working platform and an auxiliary hanging basket on the ground;
s2, lifting the suspension structure to the top of the cylindrical structure by using a lifting device, and installing and fixing;
s3, connecting the annular working platform and the auxiliary hanging basket with the suspension structure through suspension steel wire ropes;
s4, lifting the annular working platform to the position of the bottom annular notch through a lifter, adjusting the size of the telescopic structure of the annular working platform, and enabling the telescopic supporting rod to extend to abut against the outer wall of the cylindrical structure;
s5, transporting personnel and materials to an annular working platform through an auxiliary hanging basket;
s6, synchronously and symmetrically performing blast hole excavation work on the annular working platform by using a plurality of sets of drilling machines;
s7, after completing all blast hole cutting work within the range of the current annular cut, lifting the annular working platform upwards to an annular cut above the annular working platform, and performing blast hole cutting work;
s8, judging whether the cutting of all the ring-shaped notch blastholes is finished, if so, continuing to execute the step S9, and if not, re-executing the step S7;
s9, filling explosives in each blasthole of the top annular notch, and connecting an initiation network;
s10, removing the constraint of a telescopic section of the platform, enlarging the size of the platform, then lowering the annular working platform to the position of an annular notch below the annular working platform by using a lifting machine, adjusting the length of a telescopic stay bar to enable the annular working platform to be tightly hooped on the outer wall of a cylindrical structure, and carrying out explosive filling and detonation network connection operations;
s11, judging whether all the ring-shaped cut explosives are completely filled, if so, continuing to execute the step S12, and if not, re-executing the step S10;
s12, the annular working platform and the auxiliary hanging basket are lowered to the ground, then are disassembled and removed, the suspension steel wire rope is removed, and then the detonation network is excited.
Compared with the prior art, the invention has the following main advantages:
1. a safe and reliable operation environment is built in the vertical direction of the high-rise cylindrical structure through the suspension structure and the annular working platform, the operation speed of the demolition operation of the high-rise cylindrical structure can be greatly improved by matching with the auxiliary hanging basket, and the annular working platform is of a telescopic structure, so that the platform can conveniently move up and down relative to the cylindrical structure while the operation distance is ensured;
2. the lifting system is matched with the suspension steel wire rope, so that the platform is not limited by the height of the cylindrical structure, the outer wall of the cylindrical structure is propped by the telescopic support rod on the inner side of the annular working platform, and the safety lock of the lifting system ensures the stability and safety of the annular working platform;
3. the platform can adopt an integral design instead of a conventional separated hanging basket through a telescopic structure consisting of the platform fixing section, the platform telescopic section, the first corner connecting piece and the second corner connecting piece, can adapt to high cylindrical structures with different sizes, and has wide applicability;
4. the automatic control system is arranged to be matched with each sensor, so that the synchronism of the steel wire rope suspension lifting system can be ensured, the operation safety of the platform is guaranteed, the elevation of each suspension point of the platform is prevented from being adjusted manually, and the labor cost and the time cost are greatly reduced;
5. railing and the supplementary hanging flower basket railing that can open and shut through setting up annular hanging flower basket, cooperation platform connecting device can solve the current transportation problem of personnel and goods and materials, has avoided the inefficiency and the safety risk of the frequent upper and lower operation of whole annular hanging flower basket.
Drawings
FIG. 1 is a general schematic view of a construction platform according to the present invention;
FIG. 2 is a layout view of the annular work platform of the present invention;
FIG. 3 is a plan view of the annular work platform of the present invention in an extended position;
FIG. 4 is a plan view of the annular work platform of the present invention as it is retracted;
FIG. 5 is a schematic view of the telescoping section of the annular work platform of the present invention;
FIG. 6 is a schematic view of the connection between the annular work platform and the auxiliary basket according to the present invention;
FIG. 7 is a flow chart of the construction method of the present invention.
In the figure: 1. an annular work platform; 2. a suspension structure; 3. suspending the wire rope; 4. an auxiliary basket; 5. a ring-shaped cut; 6. a cylindrical structure; 7. vertically climbing a ladder; 101. a platform fixing section; 102. a platform telescoping section; 103. a first corner connector; 104. a second corner connector; 105. a sliding strap; 106. a sliding sleeve; 107. a driving oil cylinder; 108. a limiting and drag reducing sliding connector; 109. a slide opening; 110. a scissor brace rod; 111. a telescopic supporting rod; 112. a hanging point; 113. the annular hanging basket can be opened and closed by a railing; 401. a platform connection device; 402. the auxiliary hanging basket can open and close the railing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
It should be noted that, according to the implementation requirement, each step/component described in the present application can be divided into more steps/components, and two or more steps/components or partial operations of the steps/components can be combined into new steps/components to achieve the purpose of the present invention.
1. A construction platform that is used for blasting of high-rise tubular structure to demolish
As shown in fig. 1, the embodiment of the present application provides a construction platform for demolition blasting of a high-rise cylindrical structure, which mainly includes an annular working platform 1, a suspension structure 2, and an auxiliary basket 4; the towering cylindrical structure can be a chimney, a silo, a water tower, a cooling tower and the like, and in the embodiment, the towering cylindrical structure is the chimney.
Specifically, the annular working platform 1 is sleeved outside the cylindrical structure 6, the suspension structure 2 is fixed at the top of the cylindrical structure 6, the auxiliary hanging basket 4 is arranged between the annular working platform 1 and the cylindrical structure 6, and the annular working platform 1 and the auxiliary hanging basket 4 are both connected with the suspension structure 2 through a suspension steel wire rope 3;
the annular working platform 1 is connected with a first lifting system (specifically, a lifting machine system) for driving the annular working platform 1 to move in the vertical direction relative to the suspension structure 2, and the auxiliary hanging basket 4 is connected with a second lifting system (specifically, a lifting machine system) for driving the auxiliary hanging basket 4 to move in the vertical direction relative to the suspension structure 2;
meanwhile, the annular working platform 1 is of a telescopic structure and can be extended and contracted in the horizontal direction by taking the central axis of the cylindrical structure 6 as the center, the size of the telescopic structure is matched with the diameter of the cylindrical structure 6 at the same height, and a plurality of annular notches 5 are formed in the cylindrical structure 6.
As shown in fig. 2 to 4, the planar shape of the annular working platform 1 is a polygonal symmetrical structure, the annular working platform 1 includes a platform fixing section 101 with a fixed length and a platform telescopic section 102 with a variable length, the platform fixing sections 101 are connected by a first corner connecting piece 103, the platform fixing section 101 and the platform telescopic section 102 are connected by a second corner connecting piece 104, and a vertical ladder stand 7 is arranged on the outer wall of the cylindrical structure 6 at a position corresponding to the first corner connecting piece 103.
Furthermore, one side of the annular working platform 1, which is close to the cylindrical structure 6, is provided with a plurality of telescopic supporting rods 111, and after the annular working platform 1 moves to a working position along the vertical direction, the telescopic supporting rods 111 extend out and abut against the outer wall of the cylindrical structure 6, so that the annular working platform is restrained from shaking.
Furthermore, the number of the platform fixing sections 101, the platform telescopic sections 102, the first corner connectors 103 and the second corner connectors 104 is adapted to the size of the cylindrical structure 6.
The combination mode of the platform fixing section, the platform telescopic section and the corner connecting piece can be changed; aiming at different cylindrical structures, platform fixing sections with different lengths, corner connecting pieces with different angle ranges, and platform fixing sections, platform telescopic sections and corner connecting pieces with different quantities can be selected. After the construction platform is assembled and installed for a certain cylindrical structure, the change of the section of the cylindrical structure can be adapted through the length adjustment of the telescopic section of the platform and the angle adjustment of the corner connecting piece.
As shown in fig. 5, one end of the second corner connector 104 is connected to the platform fixing section 101, and the other end is slidably connected to the platform telescopic section 102 through a limiting drag-reducing sliding connector 108, a driving cylinder 107 is disposed in the middle of the platform telescopic section 102, the driving cylinder 107 is connected to the second corner connectors 104 at two ends of the platform telescopic section 102 through a sliding sleeve 106, and is configured to drive the second corner connectors 104 at two ends to slide relative to the platform telescopic section 102 symmetrically around the driving cylinder 107, so that the platform fixing sections 101 at two ends of the platform telescopic section 102 slide telescopically (the minimum length of the telescopic section after telescopic operation can reach within 600mm, and bi-directional telescopic operation is required in the telescopic operation, so as to ensure that the center of the telescopic section is always located at the midpoint of the connection point with the two ends of the platform fixing section);
sliding straps 105 are arranged on two sides of the platform telescopic section 102, scissors supporting rods 110 are arranged inside the sliding straps 105, and a sliding opening 109 is formed in the platform fixing section 101 and used for enabling the end portion of the platform telescopic section 102 to penetrate through the platform fixing section 101.
Furthermore, 2N suspension points 112 are uniformly arranged on the annular working platform 1 along the circumferential direction, and each suspension point 112 is connected with a first lifting system at the top of the cylindrical structure 6 through two suspension steel wire ropes 3; the first lifting system comprises a lifting machine and an inclination angle type safety lock, the two suspension steel wire ropes 3 are respectively a main steel wire rope and an auxiliary steel wire rope, the main steel wire rope is connected with a rope winding wheel of the lifting machine, and the auxiliary steel wire rope is connected with the inclination angle type safety lock; the inclination angle type safety lock comprises a rope pressing wheel and a safety lock, the rope pressing wheel is in contact with the main steel wire rope, and when the main steel wire rope is loosened, the safety lock can lock the auxiliary steel wire rope;
furthermore, the first lifting system is electrically connected with an automatic control system, the automatic control system comprises an encoder, a level sensor, a weighing sensor and a stay wire displacement meter, the encoder, the level sensor, the weighing sensor and the stay wire displacement meter are respectively used for monitoring the lifting distance, the relative height difference, the load weight and the length of the telescopic section of each suspension point, and the automatic control system is used for adjusting the running speed of the lifting machine in real time and has the functions of stopping and alarming;
the automatic control system ensures that the height difference of each point of the platform is less than 50mm, and when the monitoring data exceeds the allowable deviation, the machine is stopped immediately to alarm.
As shown in fig. 6, the width of the auxiliary hanging basket 4 is smaller than the minimum distance between the annular working platform 1 and the tubular structure 6 (the auxiliary hanging basket is a 600mm narrow hanging basket in this example), when the auxiliary hanging basket 4 and the annular working platform 1 are at the same height, the auxiliary hanging basket 4 is fixedly connected with the annular working platform 1 through a platform connecting device 401 (specifically, a connecting hook claw), and the annular hanging basket openable rail 113 and the auxiliary hanging basket openable rail 402 are respectively arranged at corresponding positions on the annular working platform 1 and the auxiliary hanging basket 4, so as to facilitate the passing and transferring of personnel and materials.
2. Construction method
Based on the same inventive concept, the embodiment of the present application further provides a method for demolishing a cylindrical structure by blasting, which is based on the above-mentioned construction platform, and as shown in fig. 7, specifically includes the following steps:
s1, cleaning and leveling the bottom of a cylindrical structure, and assembling an annular working platform and an auxiliary hanging basket on the ground;
s2, lifting the suspension structure to the top of the cylindrical structure by using a lifting device, and installing and fixing the suspension structure;
s3, connecting the annular working platform and the auxiliary hanging basket with the suspension structure through a suspension steel wire rope;
s4, lifting the annular working platform to the position of the bottom annular notch through a lifter, adjusting the size of the telescopic structure of the annular working platform, and enabling the telescopic supporting rod to extend to abut against the outer wall of the cylindrical structure;
s5, transporting personnel and materials to the annular working platform through the auxiliary hanging basket;
s6, synchronously and symmetrically performing blast hole excavation work on the annular working platform by using a plurality of sets of drilling machines;
s7, after completing all blast hole cutting work within the range of the current annular notch, lifting the annular working platform upwards to an annular notch above the annular working platform, and performing blast hole cutting work;
s8, judging whether the excavation of all the ring-shaped cut blastholes is finished, if so, continuing to execute the step S9, and if not, re-executing the step S7;
s9, filling explosives in each blast hole of the top annular notch, and connecting an initiation network;
s10, removing the constraint of a telescopic section of the platform, enlarging the size of the platform, then lowering the annular working platform to the position of an annular notch below the annular working platform by using a lifting machine, adjusting the length of a telescopic stay bar to enable the annular working platform to be tightly hooped on the outer wall of a cylindrical structure, and carrying out explosive filling and detonation network connection operations;
s11, judging whether all the ring-shaped cut explosives are completely filled, if so, continuing to execute the step S12, and if not, re-executing the step S10;
s12, the annular working platform and the auxiliary hanging basket are lowered to the ground, then are disassembled and removed, the suspension steel wire rope is removed, and then the detonation network is excited.
In summary, the construction platform for blasting demolition of the high-rise cylindrical structure and the construction method thereof according to the present invention:
1. a safe and reliable operation environment is built in the vertical direction of the cylindrical structure through the suspension structure and the annular working platform, the operation speed of the breaking and dismantling operation of the cylindrical structure can be greatly improved by matching with the auxiliary hanging basket, and the annular working platform is of a telescopic structure, so that the platform can conveniently move up and down relative to the cylindrical structure while the operation distance is ensured;
2. the lifting system is matched with the suspension steel wire rope, so that the platform is not limited by the height of the cylindrical structure, the outer wall of the cylindrical structure is propped by the telescopic support rod on the inner side of the annular working platform, and the safety lock of the lifting system ensures the stability and safety of the annular working platform;
3. the platform can adopt an integral design instead of a conventional separated hanging basket through a telescopic structure consisting of the platform fixing section, the platform telescopic section, the first corner connecting piece and the second corner connecting piece, can adapt to cylindrical structures with different sizes and has wide applicability;
4. the automatic control system is arranged to be matched with each sensor, so that the synchronism of the steel wire rope suspension lifting system can be ensured, the operation safety of the platform is guaranteed, the elevation of each suspension point of the platform is prevented from being adjusted manually, and the labor cost and the time cost are greatly reduced;
5. railing and the supplementary hanging flower basket railing that can open and shut through setting up annular hanging flower basket, cooperation platform connecting device can solve the current problem of transporting of personnel and goods and materials, has avoided the inefficiency and the safety risk of the frequent upper and lower operation of whole annular hanging flower basket.
The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a construction platform that is used for blasting of high-rise tubular structure to demolish, includes annular work platform (1), suspended structure (2), supplementary hanging flower basket (4), its characterized in that: the annular working platform (1) is sleeved outside the cylindrical structure (6), the suspension structure (2) is fixed to the top of the cylindrical structure (6), the auxiliary hanging basket (4) is arranged between the annular working platform (1) and the cylindrical structure (6), and the annular working platform (1) and the auxiliary hanging basket (4) are connected with the suspension structure (2) through suspension steel wire ropes (3);
the annular working platform (1) is connected with a first lifting system and used for driving the annular working platform (1) to move in the vertical direction relative to the suspension structure (2), and the auxiliary hanging basket (4) is connected with a second lifting system and used for driving the auxiliary hanging basket (4) to move in the vertical direction relative to the suspension structure (2);
the annular working platform (1) is of a telescopic structure and can extend and contract in the horizontal direction by taking a central axis of the cylindrical structure (6) as the center, the size of the telescopic structure is matched with the diameter of the cylindrical structure (6) at the same height, and a plurality of annular notches (5) are formed in the cylindrical structure (6).
2. The construction platform for demolition blasting of high-rise tubular structures as recited in claim 1, wherein: the planar shape of annular work platform (1) is polygon symmetrical structure, annular work platform (1) is including the flexible section of platform (101) of fixed length and the flexible section of platform (102) of changeable length, link to each other through first bight connecting piece (103) between platform fixed section (101), link to each other through second bight connecting piece (104) between platform fixed section (101) and the flexible section of platform (102), tube-shape structure (6) outer wall corresponds the position of first bight connecting piece (103) is equipped with perpendicular cat ladder (7).
3. The construction platform for demolition blasting of high-rise tubular structures as recited in claim 2, wherein: one side that annular work platform (1) is close to tube-shape structure (6) is equipped with a plurality of flexible bracing pieces (111), after annular work platform (1) removed to the operating position along vertical direction, flexible bracing piece (111) are stretched out and are supported tube-shape structure (6) outer wall.
4. The construction platform for blasting demolition of high-rise cylindrical structures according to claim 2, wherein: the number of the platform fixing sections (101), the platform telescopic sections (102), the first corner connecting pieces (103) and the second corner connecting pieces (104) is matched with the size of the cylindrical structure (6).
5. The construction platform for blasting demolition of high-rise cylindrical structures according to claim 2, wherein: one end of the second corner connecting piece (104) is connected with the platform fixing section (101), the other end of the second corner connecting piece is connected with the platform telescopic section (102) in a sliding mode through a limiting and drag reduction sliding connecting piece (108), a driving oil cylinder (107) is arranged in the middle of the platform telescopic section (102), the driving oil cylinder (107) is connected with the second corner connecting pieces (104) at two ends of the platform telescopic section (102) through sliding sleeves (106), and the second corner connecting pieces (104) at two ends are used for driving the platform telescopic section (102) to slide relative to the platform telescopic section (102) symmetrically by taking the driving oil cylinder (107) as a center, so that the platform telescopic section (102) can slide relative to the platform fixing section (101) at two ends in a telescopic mode; the utility model discloses a flexible section of platform (102) both sides are slip attachment strap (105), slip attachment strap (105) inside is equipped with scissors vaulting pole (110), slip opening (109) have been seted up to platform canned paragraph (101) outside guardrail for make slip attachment strap (105) pass platform canned paragraph (101).
6. The construction platform for demolition blasting of high-rise tubular structures as recited in claim 1, wherein: annular work platform (1) have evenly arranged 2N along circumference and have hung in midair point (112), every hangs in midair point (112) and links to each other with the first hoist system at tube-shape structure (6) top through two wire rope (3) of suspending, first hoist system includes lifting machine and inclination formula safety lock, two wire rope (3) of suspending are main wire rope and vice wire rope respectively, main wire rope with the rope winding wheel of lifting machine is connected, vice wire rope with inclination formula safety lock is connected.
7. The construction platform for blasting demolition of high-rise cylindrical structures according to claim 6, wherein: the inclination angle type safety lock comprises a rope pressing wheel and a safety lock, the rope pressing wheel is in contact with the main steel wire rope, and when the main steel wire rope is loosened, the safety lock can lock the auxiliary steel wire rope.
8. The construction platform for blasting demolition of high-rise cylindrical structures according to claim 6, wherein: the first lifting system is electrically connected with the automatic control system, the automatic control system comprises an encoder, a level sensor, a weighing sensor and a stay wire displacement meter, the encoder, the level sensor, the weighing sensor and the stay wire displacement meter are respectively used for monitoring the lifting distance, the relative height difference, the load weight and the length of the telescopic section of each suspension point, and the automatic control system is used for adjusting the running speed of the lifting machine in real time and is provided with the functions of stopping and alarming.
9. The construction platform for demolition blasting of high-rise tubular structures as recited in claim 1, wherein: the width of supplementary hanging flower basket (4) is less than annular work platform (1) and the minimum interval of tube-shape structure (6), when supplementary hanging flower basket (4) are in same height with annular work platform (1), supplementary hanging flower basket (4) through platform connecting device (401) with annular work platform (1) is connected fixedly, the position that corresponds on annular work platform (1) and supplementary hanging flower basket (4) is equipped with annular hanging flower basket railing (113) that can open and shut respectively and supplementary hanging flower basket railing (402) that can open and shut.
10. A blasting demolition construction method for a tubular structure based on the construction platform according to any one of claims 1 to 9, comprising the steps of:
s1, cleaning and leveling the bottom of a cylindrical structure, and assembling an annular working platform and an auxiliary hanging basket on the ground;
s2, lifting the suspension structure to the top of the cylindrical structure by using a lifting device, and installing and fixing;
s3, connecting the annular working platform and the auxiliary hanging basket with the suspension structure through suspension steel wire ropes;
s4, lifting the annular working platform to the position of the annular notch at the bottom through a lifter, adjusting the size of the telescopic structure of the annular working platform, and enabling the telescopic supporting rod to extend to abut against the outer wall of the cylindrical structure;
s5, transporting personnel and materials to an annular working platform through an auxiliary hanging basket;
s6, synchronously and symmetrically performing blast hole excavation work on the annular working platform by using a plurality of sets of drilling machines;
s7, after completing all blast hole cutting work within the range of the current annular cut, lifting the annular working platform upwards to an annular cut above the annular working platform, and performing blast hole cutting work;
s8, judging whether the excavation of all the ring-shaped cut blastholes is finished, if so, continuing to execute the step S9, and if not, re-executing the step S7;
s9, filling explosives in each blast hole of the top annular notch, and connecting an initiation network;
s10, removing the constraint of a telescopic section of the platform, enlarging the size of the platform, then lowering the annular working platform to the position of an annular notch below the annular working platform by using a lifting machine, adjusting the length of a telescopic stay bar to enable the annular working platform to be tightly hooped on the outer wall of a cylindrical structure, and carrying out explosive filling and detonation network connection operations;
s11, judging whether all the ring-shaped cut explosives are completely filled, if so, continuing to execute the step S12, and if not, re-executing the step S10;
s12, the annular working platform and the auxiliary hanging basket are lowered to the ground, then are disassembled and removed, the suspension steel wire rope is removed, and then the detonation network is excited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210902255.1A CN115288408A (en) | 2022-07-29 | 2022-07-29 | Construction platform for blasting demolition of high-rise cylindrical structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210902255.1A CN115288408A (en) | 2022-07-29 | 2022-07-29 | Construction platform for blasting demolition of high-rise cylindrical structure and construction method thereof |
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| CN115288408A true CN115288408A (en) | 2022-11-04 |
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| CN202210902255.1A Pending CN115288408A (en) | 2022-07-29 | 2022-07-29 | Construction platform for blasting demolition of high-rise cylindrical structure and construction method thereof |
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