Aerial separation segmented hoisting and dismantling process for attached type lifting scaffold

Abstract

The invention provides an attached type lifting scaffold air separation segmented hoisting and dismantling technology which comprises the steps that according to the hoisting capacity of the farthest end of crane equipment, after rechecking calculation, the attached type lifting scaffold is divided into a lower whole dismantling area and an upper scattered dismantling area in the vertical height direction; the scattered disassembly area is formed by disassembling sub-components one by one from top to bottom, and the whole disassembly area bears the self weight of the frame body of the bulk area and the construction load in the disassembly process; the components which are disassembled one by one are classified and are disassembled and hoisted to the ground by a crane device at the same time; the whole-disassembly area is divided into a plurality of whole-disassembly small units in the longitudinal direction, the dead weight of any whole-disassembly small unit is calculated to be smaller than the hoisting capacity weight of the farthest end of the crane equipment, and the whole-disassembly small unit keeps the rigid body characteristic and is hoisted to the ground by the crane equipment in a whole section mode. In the application, the self weight and the construction load of the scattered disassembly area are borne by the whole disassembly area, so that the safety is improved, the disassembly process is simplified, and the construction period is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of high-altitude scaffolding dismantling construction, and in particular to a process for aerial separation and segmented lifting and dismantling of an attached lifting scaffolding. Background Art

[0002] At present, in the construction of high-rise buildings and super high-rise buildings, some high-rise buildings use steel cantilever steel pipe scaffolding. This type of frame requires a layer of cantilever steel every four floors, and the safety risk of steel cantilevering operation is also very high; steel cantilever steel pipe scaffolding requires a lot of turnover materials and the project cost is high. The combination of ground-type steel pipe scaffolding and steel cantilever steel pipe scaffolding is adopted. The lower part adopts ground-type steel pipe scaffolding, which is erected to a height of 40 meters to 50 meters, and the upper part adopts steel cantilever steel pipe scaffolding. With the increase of high-rise buildings, this frame has the characteristics of high labor intensity, low operation efficiency, poor safety performance, multiple erection and dismantling, and a lot of turnover materials.

[0003] Therefore, the attached lifting scaffolding gradually replaced the floor-standing scaffolding and cantilevered steel pipe scaffolding due to its spatial structural characteristics, good force performance, small material consumption, low on-site labor intensity, higher construction efficiency and many other advantages. During the construction of the attached lifting scaffolding, according to the progress of the main structure construction, the attached lifting scaffolding is attached to the outer wall of the main structure and rises layer by layer to the top of the main structure. After the main structure is completed, the exterior wall decoration construction no longer needs this type of frame as an operating platform. At this time, the frame is attached to the outer wall and suspended in the air.

[0004] However, when the attached lifting scaffold is not used for construction, some of them are currently using a floor-by-floor descent method. According to the stress characteristics of the frame structure, the deadweight of the frame and the construction load are concentrated on the tie rods attached to the main structure. The frame needs to be lowered synchronously as a whole. If the descent of one part is blocked, the deadweight of the frame and the construction load will be concentrated on one tie rod. The descent process of the frame is more risky than the ascent process. For high-rise buildings with many floors, especially super high-rise buildings, this floor-by-floor descent construction method also takes a long time.

[0005] At present, some projects also adopt the method of full aerial dismantling. The mechanical model of the frame is a frame (truss) structure. The vertical bars and longitudinal and transverse bars are connected by nodes to form a spatial structure with good force performance. When the overall aerial dismantling is carried out to the bottom layer, the spatial structure performance is weakened and the rigidity of the frame is weakened. At this time, the safety factor of the frame to bear its own weight and construction load is not large. The more floors a high-rise building has, the greater the fear of aerial operations. The safety risk of the demolition process at this stage is very high.

[0006] If full-frame aerial segmentation is adopted, some areas far away from the tower crane will exceed its lifting capacity. If vertical transportation equipment is added on the ground, due to the high height of the frame, the lifting capacity of the commonly used large lifting equipment will be difficult to meet its requirements. The use of super-large lifting equipment will result in high costs for entering and leaving the site, which is not an ideal construction method. Summary of the invention

[0007] The present application provides a process for the aerial separation and segmented lifting and dismantling of an attached lifting scaffold, which simplifies the high-altitude dismantling process, reduces risks, avoids aerial operations, and improves the construction progress.

[0008] The aerial separation and segmented lifting and dismantling process of the attached lifting scaffold provided in the present application includes: a dismantling process of the attached lifting scaffold used for dismantling a high-rise or super high-rise building; the dismantling process includes the following steps: Step 1: Divide the attached lifting scaffold into a lower disassembly area and an upper disassembly area along a vertical height direction according to the lifting capacity of the farthest end of the crane equipment and the deadweight of the unit area of ​​the attached lifting scaffold; Step 2: The loose disassembly area is disassembled one by one from top to bottom, and the whole disassembly area bears the deadweight of the frame of the loose area and the construction load during the disassembly process; Step 3, bundling the disassembled components one by one according to their types, and hoisting them to the ground by the crane equipment as they are disassembled; Step 4: the disassembly area is divided into a plurality of disassembly small units along the longitudinal direction, and the deadweight of any disassembly small unit is verified and calculated to be less than the lifting capacity of the farthest end of the crane equipment; Step 5: Disassemble the whole dismantling area into multiple whole dismantling small units in turn and lift them in sections: a. The crane equipment bears the deadweight load corresponding to a small unit to be dismantled during the lifting process; b. The wall-attaching bolts of a small unit to be dismantled are withdrawn from the wall from the inside to the outside and then separated from the wall; c. The crane equipment gradually lifts a corresponding small unit to be dismantled so that it is separated from the wall, and hoists it to the ground for dismantling; d. The crane equipment repeats steps ac to separate and lift another adjacent small unit to be dismantled in the air in sections.

[0009] In the present application, the above steps are adopted to greatly improve the safety of aerial disassembly. By accurately dividing the whole disassembly area and the loose disassembly area, the whole disassembly area bears the deadweight of the loose disassembly area and the construction load, thereby improving the workers' sense of security in disassembling the components in the loose disassembly area one by one. During the dismantling process of the frame, the small whole disassembly units always maintain a certain strength and rigidity, the frame does not deform, and the components do not scatter, which greatly reduces the risk and avoids dangerous factors such as aerial operations and frame components scattering on the ground and injuring people. In addition, the aerial disassembly is carried out in sequence by dividing into multiple small whole disassembly units, thereby reducing the pollution to the environment caused by aerial scattering of construction waste and dust at the bottom of the frame.

[0010] In a specific feasible implementation scheme, the disassembly area is formed of a main frame and steel trusses to form a geometrically unchanged frame support system, which bears the deadweight and construction load of the upper bulk area, provides stable strength and rigidity, and improves safety.

[0011] In a specific feasible implementation scheme, each disassembled small unit is composed of a unit force-bearing system with at least two steps of elevation and two longitudinal force-bearing units to form an independent space, forming an independent geometrically invariant system, which is convenient for independent lifting during aerial disassembly.

[0012] In a specific possible implementation, when the crane device carries a load corresponding to a dismantled small unit to be dismantled during the lifting process, each hook of the crane device is connected to a frame node or an attachment support corresponding to a dismantled small unit to be dismantled. By slowly lifting, the crane device carries the deadweight load of the dismantled small unit.

[0013] In a specific possible implementation scheme, the outer ends of the wall-attaching bolts are pre-tied to the main frame so that the wall-attaching bolts do not fall off.

[0014] In a specific possible implementation scheme, the wall bolts exert a push-out force from the inner side of the wall body, and workers exert the push-out force from the inside to the outside, thereby improving construction safety.

[0015] In a specific feasible implementation scheme, when any two adjacent whole-disassembled small units are separated and hoisted in sections in the air, the two adjacent whole-disassembled small units are separated as they are disassembled, thereby improving the safety of the hoisting construction.

[0016] In a specific implementation scheme, the total span length of the integral and dismantling small unit located at the corner is smaller than the total span length of the integral and dismantling small unit located at the longitudinal plane. For the special-shaped structure of the integral and dismantling small unit at the corner, its total span length is reduced to enhance the safety performance of lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of vertical division of the aerial dismantling process of the attached lifting scaffold provided in the embodiment of the present application; Figure 2 A top view of an attached lifting scaffold provided in a specific embodiment of the present application; Figure 3 A schematic diagram of a first orientation of the aerial dismantling of an attached lifting scaffold provided in a specific embodiment of the present application; Figure 4 A second orientation schematic diagram of the aerial dismantling of an attached lifting scaffold provided in a specific embodiment of the present application.

[0018] Figure Number: Wall - 100, loose demolition area - 200, whole demolition area - 300, steel truss - 400, guide rail - 500, main frame - 600. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] In order to facilitate understanding of the aerial dismantling and removal process of the attached lifting scaffolding provided in the embodiment of the present application, its application scenario is first explained. In high-rise or super high-rise buildings, when the attached lifting scaffolding is not used for construction, some of them currently adopt layer-by-layer descent. According to the stress characteristics of the frame structure, the deadweight of the frame and the construction load are concentrated on the tie rods attached to the main structure. The descent of the frame needs to be synchronized as a whole. If the descent of one part is blocked, the deadweight of the frame and the construction load will be concentrated on one tie rod. The operation process of the frame descent has a greater safety risk than the ascent. For high-rise buildings with many floors, especially super high-rise buildings, this layer-by-layer descent construction method also takes a long time. At this stage, some projects also adopt full aerial dismantling. The mechanical model of the frame is a frame (truss) structure. The vertical rods and longitudinal and transverse rods are connected by nodes to form a spatial structure. Its force-bearing performance is very good. When the overall aerial dismantling is removed to the bottom layer, the spatial structure performance is weakened and the rigidity of the frame is weakened. At this time, the safety factor of the frame to bear its own weight and construction load is not large. The higher the number of floors of a high-rise building, the greater the fear of aerial operations. The safety risk of the demolition process at this stage is very high. If the full frame is divided into blocks in the air, some areas far away from the tower crane will exceed its lifting capacity. If vertical transportation equipment is added on the ground, the lifting capacity of the commonly used large-scale lifting equipment is difficult to meet its requirements due to the high height of the frame. The use of super-large lifting equipment and high costs for entering and leaving the site are not an ideal construction method. In view of this, the present application provides an aerial dismantling and demolition process for an attached lifting scaffold to simplify the high-altitude demolition process, reduce risks, avoid aerial operations, and improve the construction process.

[0022] refer to Figure 1 The aerial separation and segmented lifting and dismantling process of the attached lifting scaffolding provided in the embodiment of the present application includes: a dismantling process of the attached lifting scaffolding for dismantling high-rise or super high-rise buildings; this dismantling process is mainly used in high-rise buildings or super high-rise buildings (buildings above 100m) systems. The attached lifting scaffolding has a small amount of steel consumption, and each component is factory-produced and assembled on-site, which reduces the amount of on-site work during the construction process, and is of great significance to improving the low-carbon, factory-based and assembled nature of my country's construction industry.

[0023] When installing the attached lifting scaffold, the frame is set up with a height of five layers (four working layers and one edge protection layer). First, the lifting position of the attached lifting scaffold is arranged according to the side beams of the building structure and the outer concrete shear wall. Through holes are reserved on the side beams or concrete walls at the lifting position. The lifting beams and diagonal tie rods of the frame structure are fixed to the side beams or concrete outer walls with high-strength bolts. The main load-bearing bodies of the frame are the longitudinal main frame 600, the bottom steel truss 400 and the wall bolts. The main frame 600, the steel truss 400 and the frame frame together constitute a spatial geometrically invariant system. The main frame 600 and the horizontal support truss nodes are connected by welding or bolts, and the axes of each rod meet at the node; horizontal support rods are set between the upper and lower chords of the inner and outer horizontal support trusses, and each node is connected by welding or bolts; the vertical main frame 600 is connected by flanges, and the bottom end of the frame frame upright is set at the node of the upper chord of the horizontal truss; the assembly height of the vertical main frame 600 is equal to the height of the frame. When the frame rises or falls, the electric hoist controls the frame to move up and down along the guide rail 500, and the control system makes the frame rise and fall synchronously. If an unexpected situation occurs, when the connecting chain between the electric hoist and the frame is broken, the frame's anti-fall device is automatically locked to strongly prevent the frame from falling as a whole. When the frame is erected, it rises with the main structure and is erected layer by layer to the fourth floor and the upper protective layer. When the construction reaches more than the fourth floor, the frame is attached to the outer wall or outer beam of the building through the lifting beam and climbs up layer by layer. After the main body is capped, when the frame is no longer needed as an operating platform, the frame needs to be dismantled.

[0024] Therefore, reference Figure 1 As shown in , the removal process of the present application includes the following steps: S1. According to the lifting capacity of the farthest end of the crane equipment, after verification and calculation, the attached lifting scaffold is divided into the lower disassembly area 300 and the upper disassembly area 200 along the vertical height direction; in this application, the lower disassembly area 300 and the upper disassembly area 200 are accurately divided by the crane equipment. Through accurate calculation and division, it is ensured that the whole disassembly area 300 is under the premise of stable support, and the self-weight of each segmented small unit of the whole disassembly area 300 is within the appropriate lifting range. The lower whole disassembly area 300 bears the self-weight and construction load of the upper disassembly area 200, so that workers can feel safe when dismantling the disassembly area 200 one by one on the whole disassembly area 300. The whole disassembly area 300 is formed by the main frame 600 and the steel truss 400 to form a geometrically unchanged frame support system. It bears the self-weight and construction load of the upper bulk area, provides stable strength and rigidity, and improves safety.

[0025] S2. The dismantling area 200 is dismantled one by one from top to bottom, and the whole dismantling area 300 bears the deadweight of the frame in the bulk area and the construction load during the dismantling process; after the whole dismantling area 300 and the dismantling area 200 are accurately divided, the upper dismantling area 200 is dismantled one by one from top to bottom until it reaches the top of the pre-divided whole dismantling area 300; the order of aerial dismantling of the dismantling area 200 is as follows: first dismantle the electrical part, the upper and lower hangers of the electric hoist, the first upper wall support, the upper section, the guide rail 500, the safety protection mesh of the outer facade of the frame, the steel scaffolding board, the inner and outer uprights of the frame and the main frame 600, the second middle wall support, the middle section guide rail 500, the third lower wall support, remove the internal flap of the frame, and remove the horizontal support truss; repeat the above steps to gradually dismantle the frame downward to the top of the whole dismantling area 300.

[0026] S3. Bundle the disassembled components one by one by type, and hoist them to the ground by crane equipment as they are disassembled; calculate the dead weight of each component, use lifting bags or other items to carry the components disassembled in the disassembly area 200 in a classified manner, and the total dead weight of the components hoisted in a single time is less than the hoisting capacity of the farthest end of the crane equipment, thereby improving the safety of hoisting, and in the process of dismantling the disassembly area 200, adopt the form of multi-person cooperation, dismantling and transferring, and use bagging for recycling, and then hoist the whole bag to the ground. Avoid the load force being concentrated at a certain position in the whole disassembly area 300 during the disassembly of each component.

[0027] S4. The disassembly area 300 is divided into a plurality of disassembly small units along the longitudinal direction, and the deadweight of any disassembly small unit is less than the lifting capacity of the farthest end of the crane equipment; each disassembly small unit is composed of a unit force system with at least two steps of elevation and two longitudinal force-bearing units to form an independent space. An independent geometrically invariant system is formed, which is convenient for independent lifting during aerial disassembly. Exemplarily, the crane equipment adopts a tower crane erected with the building. When the lifting capacity of the farthest end of the crane equipment is 14.4 kN, the deadweight design value of the disassembly area 300 is not greater than 2.38 kN / m. Through precise division, each disassembly small unit has at least two steps of elevation and at least two longitudinal force-bearing units.

[0028] S4. Separate and transport multiple disassembled small units in the air in sections: a. During the lifting process, the crane equipment carries the deadweight load corresponding to a small unit to be dismantled; when the crane equipment carries the load corresponding to a small unit to be dismantled during the lifting process, each hook of the crane equipment is connected to the frame node or attachment support corresponding to a small unit to be dismantled. By slowly lifting, the crane equipment carries the deadweight load of the small unit to be dismantled. After each small unit is dismantled longitudinally, no less than two complete spatial force units are retained. At least two complete spatial force units each include at least two steps of elevation and at least two longitudinal force units.

[0029] b. The wall bolts corresponding to a small unit to be dismantled are removed from the wall 100 from the inside to the outside and then separated from the wall attachment operation; the outer ends of the wall bolts are pre-tied to the main frame 600. The wall bolts do not fall off. The wall bolts are pushed out by the inner side of the wall 100. The workers apply the push-out force from the inside to the outside to improve the safety of the construction. The outer ends of the wall bolts are hung on the frame with wire, and the workers push the wall bolts out from the inner side of the wall 100 (beam).

[0030] c. The crane equipment gradually lifts the corresponding small unit to be dismantled so that it is separated from the wall 100 and lifted to the ground for dismantling; the signalman responsible for observing the dismantling site directs the tower crane operator to slowly lift it. When it is lifted into the air, the signalman responsible for ground observation takes over the command, and the small unit divided into longitudinal sections is slowly lifted to the ground, and the operating personnel dismantle and dismantle the small unit on the ground.

[0031] d. The crane equipment repeats the above steps ac to separate and lift another adjacent small unit to be dismantled in the air. When any two adjacent small units are dismantled and lifted in the air, the two adjacent small units are separated as they are dismantled. This improves the safety and stability of the construction. The total span length of the small unit located at the corner is shorter than the total span length of the small unit located at the longitudinal plane. For the special-shaped structure of the small unit at the corner, reduce its span assembly and enhance the safety performance of lifting.

[0032] In the present application, the above steps are adopted to greatly improve the safety of aerial disassembly. By accurately dividing the whole disassembly area 300 and the loose disassembly area 200, the whole disassembly area 300 bears the deadweight and construction load of the loose disassembly area 200, thereby improving the workers' sense of security in disassembling the components of the loose disassembly area 200 one by one. During the dismantling process of the frame, the small whole disassembly units always maintain a certain strength and rigidity, the frame does not deform, and the components do not scatter, which greatly reduces the risk and avoids dangerous factors such as aerial operations and frame components scattering on the ground and injuring people. In addition, the aerial disassembly is carried out in sequence by dividing into multiple small whole disassembly units, thereby reducing the pollution to the environment caused by aerial scattering of construction waste and dust at the bottom of the frame.

[0033] Combination Figure 2 As shown in, in order to facilitate understanding of the specific operation process of the aerial separation and segmented lifting and dismantling process of the attached lifting scaffold in this application, a specific embodiment of this application is shown: In a super high-rise building, the frame and shear wall structure has 3 underground floors and 35 above-ground floors. The first floor is 7.45m high, the second and third floors are 5.6m high, the fourth to tenth floors are 4.1m high, the eleventh floor is 4.5m high, the twelfth to twenty-second floors are 4.1m high, the twenty-third floor is 4.5m high, the twenty-fourth to thirty-fourth floors are 4.1m high, the thirty-fifth floor is 4.15m high, the roof elevation is about 150m, the roof frame height is about 18m, the total building height is about 168m, and the total building area is about 159349m2. The main building is the roof of the fourth to thirty-fifth floors, the length of the structural plane in the east-west direction is 46m, the width in the north-south direction is 42.4m, and the plane shape is relatively regular.

[0034] For the main structure construction, ground-type steel pipe scaffolding is used below the fourth floor, and attached lifting scaffolding is used from the fourth floor to the roof frame layer. The frame width is 600 mm, the inner side is 300 mm from the edge of the outer wall, and 11 steps are set up, each step is 2m, and the total height is 22m. The frame around the building is divided into two sections. The northern section is set in a counterclockwise direction: 12#→1#→48#→35#, with a total of 26 lifting positions, and the southern section is set in a clockwise direction: 13#-34#, with a total of 22 lifting positions. The machine position in the north section is raised to the roof elevation of about 150m, and the machine position in the south section is raised to the frame layer elevation of about 168m. On the north side of the frame layer, the ground-type scaffolding is set up from the main building roof at an elevation of 150m to the top of the frame layer at an elevation of 168m. Cantilever bridge frames are used to overlap the attached lifting scaffolding and the ground-type scaffolding.

[0035] After the main structure is completed, the frame is no longer needed as a working platform because the exterior wall decoration adopts curtain wall. The frame needs to be dismantled in the air. Figure 1 As shown in , when specifically dividing the whole disassembly area and the loose disassembly area: A QTZ6013 tower crane is installed on site, in the middle of the south, with the center of the crane 4m away from the outer edge of the building. The lower dismantling area is 8m high, with 4 steps. According to calculations, the deadweight of the horizontal beam frame, vertical main beam, frame frame, and protection system is 2.38 kN / m. Check the lifting parameters of QTZ6013 tower crane. At the arm end at 60 m, the maximum lifting weight is 1.3T; at 55 m, the maximum lifting weight is 1.47T. Calculation of lifting distance at the farthest end of the external frame: The distance between the center of the tower crane and the outer edge of the building: 4 m; Longitudinal length of the building: 42.4 m; Building lateral width: 23 m; The distance between the lifting point of the external scaffolding and the building is 0.9 m; after calculation: The maximum lifting amplitude is 53.0 m. Maximum allowable lifting span: (1.47× 9.8) / 2.38 = 6.05; During the implementation process, the length of the section where the lower structure of the control frame is dismantled shall not exceed 6 m. (6×2.38) / 9.8=1.46; Maximum lifting weight: 1.46 T; At the farthest end of the building, the maximum lifting distance is 53.0 m, which is less than 55 m, and the maximum lifting weight is 1.46 T, which is less than 1.47 T. The lifting capacity of the tower crane meets the requirements.

[0036] Combination Figure 3 and Figure 4 As shown in the figure, the order of aerial dismantling of the dismantling area section is: first dismantle the electrical part → upper and lower hangers of the electric hoist → the first upper wall support → upper section guide rail → safety protection mesh on the outer facade of the frame → steel scaffolding → inner and outer uprights of the frame and main frame → the second middle wall support → middle section guide rail → the third lower wall support → remove the internal flap of the frame → remove the horizontal support truss → repeat the above steps, and gradually dismantle the frame downward to the lower 8 m section.

[0037] The whole demolition area is demolished in blocks: Use a wire rope to tie the lower end to the frame node or attached support of the whole demolition small unit, and hang the upper end on the tower crane hook. The hook rises slowly, the wire rope is slowly stressed, the load of the main frame and the attached support is gradually borne by the crane equipment, the wall bolts slowly exit the working state, the operators push the wall bolts out from the inside of the wall, the crane equipment lifts, and the whole demolition small unit is lifted to the ground, and the operators dismantle and demolish the whole demolition small unit on the ground.

[0038] Before demolition construction, make preparations such as construction plan review, frame inspection, personnel, and equipment, including the following: (1) Review of demolition construction plan. The special construction plan shall be approved by the technical person in charge of the construction unit, the project general supervisor engineer of the supervision unit, etc., and relevant technical experts in structure and hoisting from inside and outside the province shall be organized to review the feasibility of the construction plan, and the original plan shall be supplemented and modified according to the opinions and suggestions put forward by the expert group.

[0039] (2) Frame inspection. Check whether any frame components are missing. After the adjacent small units are removed, the stress conditions of the frame units to be removed later will change. Before removing the frame, add reinforcing wall rods to local weak locations such as corners. Check whether the bolt connections, wall connections, anti-fall supports, and support systems of the frame are loose or slipping. Check and completely clean up any scattered materials and construction waste piled on the frame.

[0040] (3) Personnel arrangement and technical explanation. There are 12 to 15 professional demolition workers, one team leader, and a full-time safety officer on-site to follow the work. The project department organizes safety and technical explanations for the workers. The technical person in charge of the project department organizes the preparation of operation instructions based on the key points of the demolition chapter in the special plan, organizes relevant workers to discuss and study the special construction plan and operation instructions, and formulates countermeasures for places where there may be safety hazards.

[0041] (4) Preparation of construction equipment. Main construction tools: 15 walkie-talkies, 15 safety belts (ropes), 15 sets of various pliers and wrenches, two slings, two slings, etc. Check and debug the construction equipment and safety protection devices.

[0042] The first part (northbound section) was demolished: The top elevation of the frame in the north section is at an elevation of about 150m, and the bottom of the frame is at the 33rd floor.

[0043] The vertical height of the dismantling area in the upper part of the frame is 14 m. The dismantling is carried out in the air. A team of 3 to 5 workers is formed. The tower crane commander cooperates with the lifting on site. The dismantled frame components are classified and bundled, and are lifted to the ground as they are dismantled. The temporary stacking construction load of the dismantled materials does not exceed 300kg and is not greater than 6kN / m2. When dismantling the sporadic components such as the frame connection bolts, multiple people cooperate and dismantle and transfer them at the same time, and they are recycled in bags, and then the whole bag is lifted to the ground.

[0044] The lower 8m of the frame is the dismantling area, which is dismantled and hoisted in blocks. Each small unit is hoisted to the ground for dismantling. First, support the track with the top support of each layer of wall support and tie it with wire to prevent it from loosening. Before dismantling, tie the frame to be lifted with wire rope, separate it from the adjacent frame, and lift it directly together with the wall support. The span of the small unit of the block shall not exceed 6m, and the span of the small unit of the frame at the corner shall not exceed 4m. The order of block dismantling is counterclockwise: 12# 1# 48# →35#.

[0045] The second part (southward section) was demolished: The south section frame is located at the frame layer, with the top elevation of about 168m and the bottom of the frame in the middle of the 35th floor. First, remove the ground scaffolding on the north side of the frame layer. The removal method of the attached lifting scaffolding is the same as the first part of the frame. The order of block removal in the whole demolition area is in a clockwise direction: 13# →34#. This achieves efficient and safe demolition operations.

[0046] A person of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. In line with the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as above, which are not provided in detail for the sake of simplicity.

[0047] In addition, to simplify the description and discussion, and in order not to obscure one or more embodiments of the present specification, known power / ground connections of other components may or may not be shown in the provided figures. In addition, devices may be shown in the form of block diagrams to avoid obscuring one or more embodiments of the present specification, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which one or more embodiments of the present specification will be implemented (i.e., these details should be fully within the scope of understanding of those skilled in the art). Where specific details are set forth to describe exemplary embodiments of the present disclosure, it is apparent to those skilled in the art that one or more embodiments of the present specification may be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0048] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

Claims

1. A process for removing an attached lifting scaffold by aerial separation and segmented lifting, including a process for removing an attached lifting scaffold for removing a high-rise or super high-rise building; characterized in that: The removal process comprises the following steps: According to the lifting capacity of the farthest end of the crane equipment, after checking and calculating, the attached lifting scaffold is divided into a lower whole dismantling area and an upper loose dismantling area along the vertical height direction; The loose disassembly area adopts the method of disassembling components one by one from top to bottom, and the whole disassembly area bears the deadweight of the frame of the loose area and the construction load during the disassembly process; Bundle the disassembled components one by one according to their types, and hoist them to the ground by the crane equipment as they are disassembled; The disassembly area is divided into a plurality of disassembly small units along the longitudinal direction, and the deadweight of any disassembly small unit is checked and calculated to be less than the lifting capacity of the farthest end of the crane equipment; The dismantling area is dismantled in the air into multiple dismantling small units and hoisted in sections: a. The crane equipment bears the deadweight load corresponding to a small unit to be dismantled during the lifting process; b. The wall-attaching bolts of a small unit to be dismantled are withdrawn from the wall from the inside to the outside and then separated from the wall; c. The crane equipment gradually lifts a corresponding small unit to be dismantled so that it is separated from the wall, and hoists it to the ground for dismantling; d. The crane equipment repeats steps ac to carry out aerial segmented detachment and lifting of another adjacent small unit to be dismantled.

2. The aerial separation and segmented lifting and dismantling process of the attached lifting scaffolding according to claim 1 is characterized in that: The whole and dismantling area forms a geometrically unchanged frame support system by means of a main frame and steel trusses.

3. The aerial separation and segmented lifting and dismantling process of the attached lifting scaffolding according to claim 2 is characterized in that: Each small unit is composed of a unit force-bearing system with at least two steps of elevation and two longitudinal force-bearing units to form an independent space.

4. The aerial separation and segmented lifting and dismantling process of the attached lifting scaffolding according to claim 3 is characterized in that: When the crane equipment carries a load corresponding to a small unit to be dismantled during the lifting process, Each hook connection of the crane equipment corresponds to a frame node or an attachment support of a small unit to be dismantled.

5. The aerial separation and segmented lifting and dismantling process of the attached lifting scaffolding according to claim 4 is characterized in that: The outer ends of the wall-attaching bolts are pre-bound to the main frame.

6. The aerial separation and segmented lifting and dismantling process of the attached lifting scaffolding according to claim 5 is characterized in that: The wall-attaching bolts exert a push-out force from the inner side of the wall.

7. The aerial separation and segmented lifting and dismantling process of the attached lifting scaffolding according to claim 1 is characterized in that: When any two adjacent disassembled small units are separated and hoisted in sections in the air, the two adjacent disassembled small units are separated as they are disassembled.

8. The aerial separation and segmented lifting and dismantling process of the attached lifting scaffolding according to claim 7 is characterized in that: The total span length of the integral and dismantled small unit located at the corner is smaller than the total span length of the integral and dismantled small unit located at the longitudinal plane, ensuring that its deadweight is smaller than the lifting capacity of the farthest end of the crane equipment.

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