CN113463943A

CN113463943A - High-rise cast-in-place concrete building demolition construction method

Info

Publication number: CN113463943A
Application number: CN202110770631.1A
Authority: CN
Inventors: 陈秀乾
Original assignee: Wenzhou Gaoda Construction Co ltd
Current assignee: Wenzhou Gaoda Construction Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-10-01
Anticipated expiration: 2041-07-08
Also published as: CN113463943B

Abstract

The application relates to a high-rise cast-in-place concrete building demolition construction method, which comprises the steps of S1, fixedly building a support frame above the middle part of a high-rise concrete building; s2, installing, lifting and connecting a construction workbench on the support frame; s3, cutting and dismantling by a small concrete cutter conveyed to a floor needing dismantling by a high-rise building construction vertical conveying machine by constructors, and finally cutting on a construction workbench; s4, when the construction is carried out to the position of the support frame, the crane for hanging the steel balls is used for impacting the concrete building to carry out second-step dismantling; and S5, when the demolition height is reduced to 4-6 floors, carrying out third demolition from the bottom of the concrete building to ensure that the concrete building is weightless and integrally collapsed, and completing demolition. The mode that layer-by-layer cutting was demolishd is adopted in this application first step, and the mode that the steel ball striking was dismantled is adopted to the second step, and the third step is demolishd from the bottom and is impeld the building and collapses, takes different demolishment mode to the co-altitude not, and the efficiency of construction is also higher when safer reasonable.

Description

High-rise cast-in-place concrete building demolition construction method

Technical Field

The application relates to the technical field of building engineering, in particular to a high-rise cast-in-place concrete building demolition construction method.

Background

At present, most buildings are constructed by adopting concrete, and with the continuous promotion of urban modernization in China, the requirements of old house demolition, old house transformation, renovation and the like are continuously increased; the common method in the process of dismantling the high-rise concrete building comprises the following steps: mechanical demolition, blasting demolition, manual demolition and the like.

However, the demolition construction process of the high-rise concrete building is high in danger, and the three forms are not well applicable to demolition of the high-rise concrete building, so that the applicant believes that the existing construction method still needs to be improved.

Disclosure of Invention

In order to be more suitable for the demolition construction of a high-rise concrete building, the application provides a demolition construction method of a high-rise cast-in-place concrete building.

The application provides a high-rise cast-in-place concrete building demolition construction method which adopts the following technical scheme:

a high-rise cast-in-place concrete building demolition construction method comprises the following steps:

s1, building a support frame fixed on the periphery of the high-rise concrete building above the middle part of the high-rise concrete building;

s2, installing a construction workbench around the upper part of the high-rise concrete building, lifting the construction workbench to be connected to the support frame, and descending the construction workbench to the next floor along with the completion of the removal of the floors;

s3, installing high-rise building construction vertical transportation machinery which is arranged at the corresponding position of the support frame and the construction workbench in a penetrating way at the inclined opposite position of the two opposite side walls of the high-rise concrete building; the small concrete cutting machine is conveyed to a floor needing to be dismantled through the high-rise building construction vertical conveying machine, a constructor carries out cutting and dismantling work until the constructor reaches the edge of the floor, the constructor carries out final cutting on a construction workbench, and a concrete member obtained through cutting is conveyed to the high-rise building construction vertical conveying machine and conveyed to the ground;

s4, when the cutting and dismantling operation is carried out to the position of the support frame, the height suitable for the crane to dismantle is reached, the crane is replaced at the moment, the steel ball is hung on the crane, and the steel ball impacts the concrete building to carry out the second-step dismantling;

and S5, when the demolition height is reduced to 4-6 floors, carrying out demolition in the third step from the bottom of the concrete building to ensure that the concrete building is weightless and integrally collapsed, and finishing demolition operation.

By adopting the technical scheme, the first step adopts a layer-by-layer cutting and dismantling mode, the second step adopts a steel ball impact dismantling mode, the third step adopts a dismantling mode from the bottom to promote the collapse of the building, and different dismantling modes are adopted aiming at different heights, so that the safety of the construction operation of dismantling the high-rise concrete building is enhanced, the working efficiency of dismantling is improved, and the method is more suitable for the dismantling construction aiming at the high-rise concrete building; the high-rise building construction vertical transportation machine is positioned on one side of a concrete building and penetrates through the support frame and the construction workbench, so that personnel and goods can be conveniently transported between different floors.

Preferably, the construction workbench is double-layer and is connected to the support frame through a lifting mechanism.

Through adopting above-mentioned technical scheme, elevating system makes construction work platform can demolish and descend along with the successive layer of high-rise concrete building, need not successive layer and reassembles, and the double-deck setting of construction work platform, and the work is demolishd simultaneously to the construction direction that staggers about two-layer concrete building can, improves the efficiency of construction.

Preferably, a supporting column is fixed at the corner of the supporting frame adjacent to the lifting column; the corner part that construction work platform and support column correspond is fixed with the spliced pole, the inside of spliced pole and the last corresponding department of construction work platform link up and have seted up the through hole, and the support column is worn to locate in the through hole that corresponds.

Preferably, the construction workbench comprises an upper operating platform and a lower operating platform which are fixed with each other, and the lower operating platform is positioned on the corresponding floor through a clamping structure.

Preferably, the clamping structure comprises an upper clamping plate and a lower clamping plate which can be clamped on a floor plate of the concrete building relatively, and the opposite side walls of the lower operating platform are provided with accommodating grooves for accommodating the upper clamping plate and the lower clamping plate; the upper clamping plate and the lower clamping plate are driven to be close to each other through a driving piece.

Preferably, the driving part is a screw rod with reverse threads arranged at two ends, and matching threads matched with the reverse threads on the screw rod are formed on the side walls of the upper clamping plate and the lower clamping plate respectively; when the screw rod is rotated, the upper clamping plate and the lower clamping plate move relatively; the lower operating platform is provided with a sliding groove for sliding the screw rod.

Preferably, a fixing column penetrating through the lower operating platform is fixed on the upper clamping plate and is positioned on one side of the screw; a guide groove for a fixing column to slide is formed in the lower operating platform, and one end of a traction rope is fixed on the fixing column; and a loop bar is fixed on one side of the lower operating platform, which is close to the concrete building, and the other end of the traction rope is sleeved on the loop bar.

Preferably, a plurality of stripes are arranged on the side wall of the upper clamping plate and the side wall of the lower clamping plate, which are close to each other, at intervals; and fences are fixed on the peripheral side walls of the upper operating platform and the lower operating platform.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the method comprises the following steps of firstly, adopting a layer-by-layer cutting dismantling mode, secondly, adopting a steel ball impact dismantling mode, thirdly, dismantling from the bottom to promote the collapse of the building, adopting different dismantling modes aiming at different heights, enhancing the safety of the construction operation of dismantling the high-rise concrete building, and also improving the working efficiency of dismantling;

2. the lifting mechanism enables the construction workbench to descend along with the successive-layer demolition of the high-rise concrete building without successive-layer reassembly, and the construction workbench is arranged in a double-layer manner, so that two layers of concrete buildings can be demolished simultaneously to improve the construction efficiency;

3. when a constructor pulls the hauling rope on the concrete building, the constructor can take the upper clamping plate and the lower clamping plate out to enable the upper clamping plate and the lower clamping plate to correspond to the upper end and the lower end of a floor plate of the concrete building, the constructor does not need to stand on a construction table for operation, and the safety is higher; the fixed column slides in the guide groove, so that on one hand, the guide groove provides a yielding space for the movement of the fixed column in the traction process of the traction rope and plays a guiding role, and on the other hand, the upper clamping plate and the lower clamping plate can not directly fall off from the lower operating platform.

Drawings

FIG. 1 is a schematic structural view of a construction work platform of an embodiment of the present application installed on a concrete structure;

FIG. 2 is a schematic cross-sectional view of the support frame connected to the upper and lower consoles according to the embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a partial explosion structure of a screw rod cooperating with an upper clamping plate and a lower clamping plate according to an embodiment of the present disclosure;

fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Description of reference numerals: 1. a support frame; 2. a construction workbench; 21. an upper layer operation table; 22. a lower deck console; 221. a receiving groove; 222. a guide groove; 223. a loop bar; 224. a chute; 3. a man-cargo dual-purpose construction elevator; 4. a lifting mechanism; 41. a drive motor; 42. a lifting column; 5. a mating post; 51. a through hole; 6. a clamping structure; 61. an upper clamping plate; 611. fixing a column; 62. a lower clamping plate; 7. a screw; 8. a hauling rope; 9. a fence; 10. a support pillar; 11. connecting columns; 111. a through hole; 12. and (4) stripes.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses a high-rise cast-in-place concrete building demolition construction method, which comprises the following steps:

s1, building a support frame 1 fixed on the periphery of the high-rise concrete building above the middle part of the high-rise concrete building;

s2, installing the construction workbench 2 around the upper part of the high-rise concrete building, lifting and connecting the construction workbench 2 to the support frame 1, and lowering the construction workbench 2 to the next floor along with the completion of the removal of the floor;

s3, installing high-rise building construction vertical transportation machinery which is arranged at the corresponding position of the support frame 1 and the construction workbench 2 in a penetrating way at the inclined opposite position of the two opposite side walls of the high-rise concrete building; the small concrete cutting machine is conveyed to a floor needing to be dismantled through the high-rise building construction vertical conveying machine, a constructor carries out cutting and dismantling work until the constructor reaches the edge of the floor, the constructor carries out final cutting on the construction workbench 2, and the concrete member obtained through cutting is conveyed to the high-rise building construction vertical conveying machine and conveyed to the ground;

s4, when the cutting and dismantling operation is carried out to the position of the support frame 1, the height suitable for the crane to dismantle is reached, the crane is replaced at the moment, the steel ball is hung on the crane, and the steel ball impacts the concrete building to carry out the second-step dismantling;

The construction method is characterized in that a man-cargo dual-purpose construction elevator 3 is adopted as the high-rise building construction vertical transportation machine, a construction workbench 2 is double-layered, referring to fig. 1, the construction workbench 2 comprises an upper-layer operation platform 21 and a lower-layer operation platform 22 which are fixed with each other, the upper-layer operation platform 21 and the lower-layer operation platform 22 respectively correspond to floors of two concrete buildings which are adjacent up and down, the upper-layer operation platform 21 and the lower-layer operation platform 22 can be synchronously constructed in a left-right staggered mode, and the working efficiency is improved on the premise of ensuring the safety; the surrounding side walls of the upper operating platform 21 and the lower operating platform 22 are respectively fixed with a fence 9, so that the construction safety is improved.

Referring to fig. 1 and 2, an upper stage operation table 21 and a lower stage operation table 22 are connected to a support frame 1 through a lifting mechanism 4; the lifting mechanism 4 comprises a driving motor 41 and lifting columns 42, and the lifting columns 42 are arranged at the inclined opposite corners of the support frame 1 and are respectively opposite to the corresponding construction elevators 3 for both people and goods; the driving motor 41 is fixed on the supporting frame 1 at a position corresponding to the lifting column 42, an output shaft of the driving motor 41 is fixed with the lifting column 42, and the driving motor 41 drives the lifting column 42 to rotate; the upper operating platform 21 and the lower operating platform 22 are respectively fixed with a matching column 5 at the corner part corresponding to the upper part of the lifting column 42, the inside of the matching column 5 is communicated with the corresponding part of the upper operating platform 21 and the lower operating platform 22 to form a penetrating hole 51 for the lifting column 42 to penetrate through, the lifting column 42 is connected with the penetrating hole 51 in a threaded manner, and when the lifting column 42 rotates, the upper operating platform 21 and the lower operating platform 22 can descend along with the rotation.

Referring to fig. 1 and 2, a supporting column 10 is fixed at a corner of the supporting frame 1 adjacent to the lifting column 42, that is, the supporting column 10 is close to the dual-purpose construction elevator 3 and is positioned at one side of the dual-purpose construction elevator 3; connecting columns 11 are fixed at the corners of the upper operating table 21 and the lower operating table 22 above the supporting columns 10, through holes 111 are formed in the connecting columns 11 and the corresponding positions of the upper operating table 21 and the lower operating table 22 in a penetrating manner, and the supporting columns 10 penetrate through the corresponding through holes 111; when the lifting column 42 rotates, the lower operating platform 22 drives the upper operating platform 21 to descend, the lifting column 42 relatively ascends in the matching column 5, and meanwhile, the supporting column 10 is matched and ascended in the connecting column 11; the cooperation of the connecting column 11 and the supporting column 10 can stably guide the lifting of the upper operating platform 21 and the lower operating platform 22.

Referring to fig. 2 and 3, the lower deck 22 is positioned on the corresponding floor by the clamping structure 6; the clamping structure 6 comprises an upper clamping plate 61 and a lower clamping plate 62, a plurality of accommodating grooves 221 are formed in the opposite side walls of the lower operating platform 22 facing the concrete building at intervals, and the upper clamping plate 61 and the lower clamping plate 62 are accommodated in the accommodating grooves 221 and penetrate through the accommodating grooves 221 to be clamped on the floor plate.

Referring to fig. 3, a plurality of stripes 12 are spaced apart from each other on the side walls of the upper clamping plate 61 and the lower clamping plate 62, so as to increase friction when clamping the floor slab of a concrete building.

Referring to fig. 3 and 4, a fixing column 611 penetrating through the upper portion of the lower operating platform 22 is fixed on one side of the upper portion of the upper clamping plate 61 close to the edge of the side wall, a guide groove 222 extending towards the direction of the concrete building is formed in the lower operating platform 22, the fixing column 611 penetrates through and is slidably connected to the guide groove 222, and one end of a traction rope 8 is fixed on the fixing column 611; a sleeve rod 223 is fixed on one side, close to the concrete building, of the lower-layer operating platform 22, the other end of the traction rope 8 is sleeved on the sleeve rod 223, a constructor can pull the traction rope 8 on the concrete building to bring the traction rope out of the upper clamping plate 61 and the lower clamping plate 62, the operation is not required to be carried out on the operating platform, and the safety is higher; the fixing post 611 slides in the guiding slot 222, so that on one hand, the guiding slot 222 provides a space for the fixing post 611 to move and guide during the pulling process of the pulling rope 8, and on the other hand, the upper clamping plate 61 and the lower clamping plate 62 are prevented from directly falling out of the lower operating platform 22.

Referring to fig. 3 and 4, after the upper clamping plate 61 and the lower clamping plate 62 are moved to the floor slab corresponding to the concrete building, they are driven by the driving member to approach each other and clamp the floor slab positioned on the concrete building; the driving part is a screw 7 with reverse threads at two ends, the screw 7 is positioned on the edges of the side walls of the upper clamping plate 61 and the lower clamping plate 62 close to the fixed column 611, so that the operation is more convenient for constructors, and the upper part of the lower operating platform 22 is provided with a sliding groove 224 for the screw 7 to slide; the side walls of the upper clamping plate 61 and the lower clamping plate 62 are provided with matching threads which are matched with the reverse threads on the screw 7 respectively; when the screw 7 is rotated in the forward direction, the upper clamping plate 61 and the lower clamping plate 62 approach each other; the screw 7 is rotated reversely, the upper clamping plate 61 and the lower clamping plate 62 are far away from each other, and the floor plate thickness adjusting device is suitable for adjusting floor plates with different thicknesses.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A high-rise cast-in-place concrete building demolition construction method is characterized in that: the method comprises the following steps:

s1, building a support frame (1) fixed on the periphery of the high-rise concrete building above the middle part of the high-rise concrete building;

s2, installing construction workbenches (2) around the upper portion of the high-rise concrete building, enabling the construction workbenches (2) to be connected to the support frame (1) in a lifting mode, and enabling the construction workbenches (2) to descend to the next floor along with the completion of the removal of the floors;

s3, installing high-rise building construction vertical transportation machinery which is arranged at the corresponding position of the support frame (1) and the construction workbench (2) in a penetrating way at the inclined opposite position of the two opposite side walls of the high-rise concrete building; the small concrete cutting machine is conveyed to a floor needing to be dismantled through the high-rise building construction vertical conveying machinery, a constructor carries out cutting and dismantling work until the constructor reaches the edge of the floor, the constructor carries out final cutting on the construction workbench (2), and the concrete member obtained by cutting is conveyed to the high-rise building construction vertical conveying machinery and conveyed to the ground;

s4, when the cutting and dismantling operation is carried out to the position of the support frame (1), the height suitable for the crane to dismantle is reached, at the moment, the crane is replaced, a steel ball is hung on the crane, and the steel ball impacts the concrete building to carry out the second-step dismantling;

2. The demolition construction method for a high-rise cast-in-place concrete building according to claim 1, characterized in that: the construction workbench (2) is arranged to be double-layer, and the construction workbench (2) is connected to the support frame (1) through the lifting mechanism (4).

3. The demolition construction method for a high-rise cast-in-place concrete building according to claim 2, characterized in that: the lifting mechanism (4) comprises a driving motor (41) and a lifting column (42), and the lifting column (42) is installed at the inclined opposite corner of the support frame (1) and is respectively arranged opposite to the vertical transportation machinery for high-rise building construction; the driving motor (41) is fixed on the support frame (1) corresponding to the lifting column (42), and an output shaft of the driving motor (41) is fixed with the lifting column (42); the construction method is characterized in that a matching column (5) is fixed at a corner part corresponding to the lifting column (42) on the construction workbench (2), a penetrating hole (51) for the lifting column (42) to penetrate through is formed in the matching column (5) and the corresponding part on the construction workbench (2) in a penetrating mode, and the lifting column (42) is in threaded connection with the penetrating hole (51).

4. The demolition construction method for a high-rise cast-in-place concrete building according to claim 3, characterized in that: a supporting column (10) is fixed at the corner of the supporting frame (1) adjacent to the lifting column (42); the corner part that construction work platform (2) and support column (10) correspond is fixed with spliced pole (11), corresponding department has run through and has seted up through hole (111) on the inside of spliced pole (11) and construction work platform (2), and support column (10) are worn to locate in corresponding through hole (111).

5. The demolition construction method for a high-rise cast-in-place concrete building according to claim 1, characterized in that: the construction workbench (2) comprises an upper operating platform (21) and a lower operating platform (22) which are fixed with each other, and the lower operating platform (22) is positioned on the corresponding floor through a clamping structure (6).

6. The demolition construction method for a high-rise cast-in-place concrete building according to claim 5, characterized in that: the clamping structure (6) comprises an upper clamping plate (61) and a lower clamping plate (62) which can be clamped on a floor plate of a concrete building relatively, and the opposite side walls of the lower operating platform (22) are provided with accommodating grooves (221) for accommodating the upper clamping plate (61) and the lower clamping plate (62); the upper clamping plate (61) and the lower clamping plate (62) are driven to approach each other by a driving piece.

7. The demolition construction method for a high-rise cast-in-place concrete building according to claim 6, wherein: the driving piece is a screw (7) with reverse threads arranged at two ends, and matching threads matched with the reverse threads on the screw (7) are formed on the side walls of the upper clamping plate (61) and the lower clamping plate (62); when the screw rod (7) is rotated, the upper clamping plate (61) and the lower clamping plate (62) move relatively; the lower operating platform (22) is provided with a sliding chute (224) for the sliding of the screw rod (7).

8. The demolition construction method for a high-rise cast-in-place concrete building according to claim 7, characterized in that: a fixing column (611) penetrating through the lower operating platform (22) is fixed on the upper clamping plate (61), and the fixing column (611) is located on one side of the screw (7); a guide groove (222) for a fixing column (611) to slide is formed in the lower operating platform (22), and one end of a traction rope (8) is fixed on the fixing column (611); a loop bar (223) is fixed on one side of the lower operating platform (22) close to the concrete building, and the other end of the traction rope (8) is sleeved on the loop bar (223).

9. The demolition construction method for a high-rise cast-in-place concrete building according to claim 6, wherein: a plurality of stripes (12) are arranged on the mutually close side walls of the upper clamping plate (61) and the lower clamping plate (62) at intervals; and the surrounding side walls of the upper operating platform (21) and the lower operating platform (22) are respectively fixed with a fence (9).