Integral hoisting installation construction method for high-altitude corridor suspended ceiling curtain wall

Abstract

The invention relates to an integral hoisting installation construction method for a high-altitude corridor suspended ceiling curtain wall. The method comprises the following steps that S1, hoisting holes are pre-buried in a floor; s2, mounting a lifting device; s3, processing and manufacturing a suspended ceiling; (1) suspended ceiling framework welding; (2) an anti-deformation rod is installed, the anti-deformation rod comprises an anti-deformation rod body and a connecting rod fixed to the lower portion of the anti-deformation rod body, and the connecting rod is detachably connected with the main keel; a hanging steel plate is fixed on a rod body of the anti-deformation rod and is connected with a hanging piece; (3) supporting steel plates are installed, after trial hoisting, panel installation and anti-deformation rod installation are completed, the suspended ceiling framework is fully paved with the supporting steel plates to form a post-lifting construction platform, and the supporting steel plates are detachably connected with the main keels; s4, suspended ceiling fixing; s5, the lifting device, the anti-deformation lifting frame and the supporting steel plate are dismantled; and S6, the hoisting holes are backfilled. The anti-deformation rod lifting frame is lifted through the lifting piece, lifting of the suspended ceiling is achieved, the situation that the suspended ceiling joist is directly lifted through the lifting piece is avoided, and the lifting stability of the suspended ceiling is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of installation of the ceiling of the aerial corridor, and particularly relates to a construction method for the integral hoisting and installation of the ceiling curtain wall of the high-altitude corridor. Background Technique

[0002] In modern construction projects, the building forms for connecting high-rise buildings are increasing day by day. Whether it is a large commercial complex or a public building such as an office building, the overall shape of the building and the decorative property of the space have reached a new height. As an important part of the decoration of the outdoor space, the ceiling of the corridor not only needs to meet the aesthetic requirements, but also ensure the structural safety and installation stability. With the development of construction technology, the scale and structural form of the high-altitude corridor are becoming increasingly complex, and the construction of its suspended ceiling also faces many challenges. The honeycomb panel has been widely used in these large-span buildings due to its many advantages such as light weight, high strength, and beauty. However, due to the characteristics of large ceiling span and high construction position, the traditional ceiling construction method is difficult to meet its construction requirements. Summary of the Invention

[0003] In view of this, the purpose of the invention is to provide a construction method for the integral hoisting and installation of the ceiling curtain wall of the high-altitude corridor, so as to solve the technical problems of difficult construction and poor installation quality of the ceiling of the high-altitude corridor in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the construction method for the integral hoisting and installation of the ceiling curtain wall of the high-altitude corridor of the invention is as follows: The construction method for the integral hoisting and installation of the ceiling curtain wall of the high-altitude corridor includes the following steps: S1: Embedded hoisting holes in the floor slab; determine the reserved position of the hoisting holes before the floor slab construction. When installing the floor bearing plate, use a round pipe combined with the lifting point coordinates of the unit plate to set the embedded pipe, and then carry out concrete pouring to form the floor slab. The round pipe and the embedded pipe form hoisting holes on the floor slab; S2: Install the lifting device; including a bracket detachably arranged on the floor slab corresponding to the hoisting hole and a lifting member fixed on the bracket, the lifting member extends downward from the hoisting hole to below the floor slab; multiple lifting devices are correspondingly arranged on the floor slab, and the lifting members of the multiple lifting devices operate synchronously; S3: Processing and manufacturing of the ceiling; (1) Welding of the ceiling skeleton, the ceiling skeleton includes a main keel and a secondary keel perpendicularly welded to the main keel. Ceiling connectors are fixedly arranged at intervals in the extending direction of the main keel. One end of the ceiling connector is fixedly connected to the main keel, and the other end of the ceiling connector is used for fixedly connecting to the floor slab; (2)Installation of the anti-deformation rod hoisting frame. The anti-deformation rod hoisting frame includes a hoisting anti-deformation rod and a connecting rod fixed below the hoisting anti-deformation rod. The hoisting anti-deformation rod is arranged above the ceiling skeleton, and the hoisting anti-deformation rod is perpendicular to the main keel of the ceiling skeleton; the connecting rod is detachably connected to the main keel; hanging steel plates are fixed at both ends of the hoisting anti-deformation rod, and long holes for connecting with the hanging parts are formed on the hanging steel plates. (3)Installation of the support steel plate, trial hoisting, and panel installation. After the anti-deformation rod is installed, the support steel plates are laid on the ceiling skeleton to form a construction platform after lifting. The support steel plates are detachably connected to the main keel. After the floor construction quality is inspected and qualified, connect the hanging parts to the hanging steel plates of the anti-deformation rod hoisting frame, and lift the skeleton above the floor and let it stand still. Fix the panel below the ceiling skeleton and detect the flatness of the panel installation surface. S4: Ceiling fixing; after multiple lifting devices jointly lift the ceiling as a whole to the installation height, the construction workers enter the construction platform and fixedly connect the upper end of the ceiling connecting piece to the secondary steel beam of the floor. S5: Removal of the lifting device, anti-deformation hoisting frame, and support steel plate. S6: Backfilling of the hoisting hole; after the ceiling is installed, pour concrete into the hoisting hole to seal the hoisting hole.

[0005] Beneficial effects: The ceiling of the high-altitude corridor ceiling curtain wall of the present invention is assembled on the ground. After the assembly is completed, it is lifted as a whole. The high-altitude operation time is short and the installation efficiency is high. Moreover, assembling the ceiling curtain wall on the ground can ensure the assembly quality of the ceiling; furthermore, during the ceiling processing, by setting an anti-deformation rod hoisting frame on the ceiling skeleton, fixing the anti-deformation rod hoisting frame to the ceiling skeleton, and lifting the anti-deformation rod hoisting frame through the hanging parts, the hoisting of the ceiling is realized, avoiding the hanging parts directly lifting the ceiling keel and preventing the ceiling skeleton from deforming when the hanging parts lift the ceiling, that is, ensuring the structural accuracy and stability of the ceiling during the lifting process. Not only that, after the ceiling is lifted in place as a whole, since the support steel plates are laid on the ceiling skeleton to form a construction platform after lifting, the construction workers can stand on the construction platform to weld and fix the ceiling to the secondary steel beam of the floor, without setting up an assembly operation platform, with strong site adaptability, high installation efficiency, and guaranteed quality.

[0006] Further, the bracket is a cuboid bracket. The bottom of the bracket is fixed on the floor. A suspension crossbeam is arranged in the middle of the top of the bracket, and an "Ω"-shaped hanging piece is fixed below the suspension crossbeam. The hanging part is fixed on the hanging piece.

[0007] Beneficial effects: The structure of the bracket is more stable. The bracket can realize the installation of the hanging parts corresponding to the hoisting holes, facilitating the hanging parts to extend downward from the hoisting holes to the floor below to be fixed to the ceiling, thus facilitating the hoisting of the ceiling.

[0008] In S3, before welding the ceiling frame, the main steel structure of the ceiling is measured using a total station, modeled using BIM technology, and then the data is extracted. A laser plumb line is used to project the ceiling processing data onto the processing area directly below the installation position of the ceiling frame. The accuracy of the reference points is remeasured using the total station, and the equal deviation centering method is used to eliminate small deviations between the reference points.

[0009] Beneficial effects: Before welding the ceiling frame, the main steel structure of the ceiling is measured using a total station and modeled using BIM technology. Then, the data is extracted. A laser plumb line is used to project the ceiling processing data onto the processing area directly below the installation position of the ceiling frame. The accuracy of the reference point is remeasured using the total station to ensure the accuracy of the ceiling frame welding.

[0010] Four reinforcing ribs are welded between the hanging steel plate and the hoisting anti-deformation rod.

[0011] Beneficial effect: The setting of the reinforcement ribs ensures the structural connection strength between the hanging steel plate and the hoisting anti-deformation rod.

[0012] The panel and the frame are connected via fixed angle brackets, and a rubber gasket is padded between the fixed angle brackets and the frame.

[0013] Beneficial effects: The setting of the fixed angle bracket facilitates the connection between the panel and the frame, and the setting of the rubber gasket between the fixed angle bracket and the frame can reduce the impact of the impact received by the frame on the fixed angle bracket and the panel.

[0014] Furthermore, the panel includes a plurality of first panels and second panels that are alternately connected, a first fixed angle code is fixed on the side of the first panel facing the second panel, the first fixed angle code is fixed on the frame, and the first fixed angle code is provided with a slot with an opening facing the second ceiling; a second fixed angle code is fixed on the side of the second panel facing the first panel, and the second fixed angle code is provided with a plug-in board that is plugged and adapted to the slot of the first fixed angle code; a horizontal plate is provided on the upper end of the second fixed angle code, and when the plug-in board is plug-in and adapted to the slot, the horizontal plate contacts the bottom of the bracket, and an adhesive layer is fixed on the side of the horizontal plate facing the bracket.

[0015] Beneficial effect: The setting of the first fixed angle code and the second fixed angle code can facilitate the fixed connection of the second panel relative to the first panel, and at the same time, can facilitate the control of the flatness between the first panel and the second panel, thereby ensuring the overall flatness of the panel.

[0016] In S5, when the lifting device is removed, first cut off the power supply of the lifting device, remove the hanging parts one by one, and finally remove the support from the floor slab; then the construction workers enter the construction platform, remove the anti-deformation rod hoisting rack from the skeleton, and then use a cutting machine to cut the anti-deformation rod hoisting rack into sections and carry them out of the construction platform one by one; after all the construction inside the suspended ceiling is completed, remove the support steel plates of the construction platform one by one.

[0017] Beneficial effects: When the lifting device is removed, the suspended ceiling is already fixed relative to the floor slab, so that the support and hanging parts of the lifting device can be removed standing on the construction platform. Moreover, when the anti-deformation rod hoisting rack is disassembled, it can also be cut and removed standing on the construction platform, which is convenient for the disassembly of the anti-deformation hanging rod rack; after all the construction inside the suspended ceiling is completed, remove the support steel plates of the construction platform one by one.

[0018] In S6, after the suspended ceiling is installed, use a template to seal the bottom of the hoisting hole, pour concrete in two times. The height of the first concrete pouring is half of the depth of the hoisting hole. After the water test shows no leakage, apply waterproof materials, and then fill the remaining concrete to ensure the waterproofness and integrity of the floor slab.

[0019] Beneficial effects: The plugging construction of the hoisting hole is reasonable, ensuring the waterproofness and integrity of the floor slab after the hoisting hole is plugged.

[0020] In S2, install a synchronous control system for the hanging parts of each lifting device. The synchronous control system includes a controller, a weight sensor controlled and connected to the controller, an external display controlled and connected to the controller, and a wireless remote control controlled and connected to the controller. The weight sensor is arranged on the hanging part, and the single-point load tension value in the normal working state of a single point is set on the weight sensor. The external display shows the stress data during the hoisting process; when the set tension is exceeded, after the external display shows the tension, the weight sensor will alarm and cut off the power, and then lift or lower the hanging parts with uneven stress through the wireless remote control to keep the whole system in a balanced state.

[0021] Beneficial effects: The setting of the synchronous control system ensures the synchronism of the suspended ceiling lifting and provides support for the installation accuracy of the suspended ceiling.

[0022] The main keel includes several connecting sections connected by splicing; adjacent connecting sections are fixedly connected by a first core; the secondary keel and the main keel are fixedly connected by a second core; both the first core and the second core are "D"-shaped cores.

[0023] Beneficial effects: The setting of the first core ensures the structural strength of the connection between the connecting sections of the main keel. The setting of the second core facilitates the telescopic adjustment between the secondary keel and the main keel and can ensure the connection strength between the secondary keel and the main keel. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the framework of the overall hoisting and installation construction method of the high-altitude corridor ceiling curtain wall in the present invention; Figure 2 It is a schematic diagram of the position of the hoisting hole on the floor slab in the overall hoisting and installation construction method of the high-altitude corridor ceiling curtain wall in the present invention; Figure 3 It is a schematic structural diagram of the completed fixed installation of the ceiling and the floor slab in the present invention; Figure 4 It is a schematic diagram of the connection between the ceiling connection member of the ceiling and the secondary steel beam of the floor slab in the present invention; Figure 5 It is Figure 4 The side view of the connection between the ceiling connection member of Figure 6 It is Figure 5 The enlarged view at position A in Figure 7 It is a schematic structural diagram of the bracket fixed on the floor slab in the present invention; Figure 8 It is Figure 7 The top view of the bracket in Figure 9 It is a schematic diagram of the connection between the anti-deformation rod and the main keel in the present invention; Figure 10 It is a partial schematic diagram of the anti-deformation rod in the present invention; Figure 11 It is a schematic diagram of the anti-deformation rod being hoisted by the electric chain hoist on the bracket in the present invention; Figure 12 It is a schematic diagram of the electric chain hoist lifting the ceiling through the anti-deformation rod in the present invention; Figure 13 It is a schematic diagram of the construction personnel entering the construction platform for welding and connecting the ceiling connection member and the secondary steel beam of the floor slab in the present invention; Figure 14 It is a process flow chart of the overall hoisting and installation construction method of the high-altitude corridor ceiling curtain wall in the present invention.

[0025] Reference numerals: 1-framework; 2-supporting frame; 3-leg; 4-floor slab; 5-main steel beam; 6-hoisting hole; 7-secondary steel beam; 8-first fixing angle code; 9-ceiling connection member; 10-panel; 11-main keel; 12-secondary keel; 13-first core; 14-second fixing angle code; [15-slot; 16-plugging plate; 17-horizontal plate; 18-bracket; 19-hanging piece; 20-connecting rod; 21-hanging steel plate; 22-electric chain hoist; 23-anti-deformation rod. Detailed implementation manners

[0026] The overall hoisting and installation construction method of the overhead corridor ceiling curtain wall of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments: The honeycomb aluminum panel ceiling area of the overall hoisting and installation construction method of the overhead corridor ceiling curtain wall of the present invention is 1200 m², and the elevation is 48.7 m. The processing areas below the ceiling are the structural slabs of the 6th and 7th floors, with elevations of 21.8 m and 25.9 m respectively. According to the different elevations of the floor processing sites, the ceiling is divided into two east and west plates. The honeycomb aluminum panel area of the west plate is about 600 square meters, and the area of the east plate is about 650 square meters. The two plates can be constructed in a flowing water manner to ensure the construction efficiency.

[0027] The overall hoisting and installation construction method of the overhead corridor ceiling curtain wall of the present invention includes the following steps: S1: Embedding hoisting holes in the floor slab; Before the construction of the floor slab 4, determine the reserved positions of the hoisting holes 6. When installing the floor formwork, use round pipes combined with the lifting point coordinates of the unit plates to set the embedded pipes, and then pour concrete to form the floor slab 4. The round pipes and the embedded pipes form hoisting holes 6 on the floor slab 4. In this embodiment, the inner diameter of the hoisting hole 6 is 76 mm. The lower end of the embedded pipe is fixed to the floor formwork by welding, and the upper end is connected and reinforced with a round steel with a diameter of 8 mm to the main reinforcement to prevent the concrete from vibrating and deviating. After the installation of the embedded pipe is completed, it is inspected and then the concrete is poured. In this embodiment, the hoisting holes 6 are arranged on both sides of the main steel beam 5 of the floor slab 4, and several hoisting holes 6 on either side are arranged at intervals in the extending direction of the main steel beam 5 of the floor slab 4; Secondary steel beams 7 are fixedly arranged between the main steel beams 5 of the floor slab 4.

[0028] S2: Install the lifting device; It includes a bracket 18 detachably arranged on the floor slab 4 corresponding to the hoisting hole 6 and a lifting member fixed on the bracket 18. The lifting member extends downward from the hoisting hole 6 to below the floor slab 4; A plurality of lifting devices are correspondingly arranged on the floor slab 4, and the lifting members of the plurality of lifting devices operate synchronously.

[0029] In this embodiment, the bracket 18 is a cuboid bracket. The bracket 18 is welded by 80×80×4 mm square steel pipes into a cuboid bracket with a length and width of 1000 mm and a height of 1500 mm. A 80×80×4 mm square steel pipe suspension cross beam is arranged in the middle of the top of the bracket 18, and an "Ω"-shaped hanging member 19 is fixed below the suspension cross beam; The bottom of the bracket 18 is fixed on the floor slab 4. Specifically, the bottom of the bracket 18 is welded to a 300×400×8 mm hot-dip galvanized steel plate and fixed to the floor slab 4 through chemical anchor bolts; The lifting member is fixed on the hanging member 19. To ensure the stable lifting of the ceiling and no deviation of the lifting points, a DHP electric chain hoist 22 is selected. The chain is selected with a diameter of 10 mm and a length of 60 m. The electric chain hoist 22 is hung on the bracket 18 and fixed firmly. The chain passes through the hoisting hole 6 and hangs vertically at the lower ceiling processing position.

[0030] Synchronous control system for hoisting component installation of each hoisting device. The synchronous control system includes a controller, a weight sensor controllably connected to the controller, an external display controllably connected to the controller, and a wireless remote controller controllably connected to the controller. The weight sensor is arranged on the hoisting component, and the single-point load tensile value under the normal working state of a single point is set on the weight sensor. The external display shows the stress data during the hoisting process. When the set tensile force is exceeded, after the external display shows the tensile force, the weight sensor will alarm and cut off the power, and then the hoisting component with uneven stress is lifted or lowered through the wireless remote controller to keep the whole system in a balanced state, avoiding uneven stress and overall overturning during the overall hoisting process. In this embodiment, the single-point load tensile value under the normal working state of a single point is 21 kN, and the power of each electric chain hoist 22 is 500 W.

[0031] S3: Ceiling processing and manufacturing; (1) Welding of the ceiling framework. The ceiling framework includes a main keel 11 and a secondary keel 12 perpendicularly and welded to the main keel 11. Ceiling connectors 9 are fixedly arranged at intervals in the extending direction of the main keel 11. One end of the ceiling connector 9 is fixedly connected to the main keel 11, and the other end of the ceiling connector 9 is used for fixedly connecting to the floor slab 4.

[0032] The main keel 11 includes a number of connecting segments connected by splicing. Adjacent connecting segments are fixedly connected by a first core 13; the secondary keel 12 and the main keel 11 are fixedly connected by a second core. Both the first core 13 and the second core are "D"-shaped cores. In this embodiment, the direction of the ceiling main keel 11 is the same as the extending direction of the secondary steel beam 7 of the floor slab 4. The single main keel 11 is 26.6 m long. First, the 160×80×4 mm main keel 11 is spliced according to the lofting dimensions. The inside of the joint is connected by a customized 140×60×6 mm first core 13. The first core 13 is "D"-shaped; one end of the first core 13 is fully welded to the connecting segment and then inserted into the connecting segment of another main keel 11, and the length is not less than 200 mm.

[0033] The secondary keel 12 is made of 120×60×4 mm hot-dip galvanized square steel pipe. The secondary keel 12 and the main keel 11 are connected by a 70 mm long 102×42×5 mm second core. The second core is a "D"-shaped core. One end of the second core is welded to the secondary keel 12, and the other end of the second core is welded to the main keel 11.

[0034] The ceiling connector 9 is made of 12# hot-dip galvanized channel steel and is connected to the main keel 11 by 2 M12×130 stainless steel bolts with a 2 mm thick flexible gasket in the middle.

[0035] Before welding the ceiling frame, the main steel structure of the ceiling is measured using a total station, modeled using BIM technology, and then the data is extracted. Directly below the installation position of the ceiling frame, a laser plumb line is used to project the ceiling processing data onto the processing area, and the accuracy of the reference points is re-measured using the total station. For small deviations between reference points, the equal deviation centering method is used to eliminate errors.

[0036] During the welding of the ceiling frame, a blank frame 1 is used to support the frame. The blank frame is welded on-site using 160×80mm hot-dip galvanized square steel. The grid dimensions are 3000×4200mm, and the overall dimensions are 25000×27000mm. When installing the panels 10, the ceiling frame is lifted off the blank frame 1 to facilitate the installation of the panels 10 and the ceiling frame. In this embodiment, the blank frame 1 includes a grid-like support frame 2 and legs 3 fixed below the grid-like support frame 2.

[0037] (2) Installation of the anti-deformation rod. The anti-deformation rod 23 includes an anti-deformation rod body and a connecting rod 20 fixed below the anti-deformation rod body. The anti-deformation rod body is arranged above the ceiling frame. The anti-deformation rod body and the main keel 11 of the ceiling frame are perpendicular to each other. The connecting rod 20 is detachably connected to the main keel 11. Hanging steel plates 21 are fixed at both ends of the anti-deformation rod body. The hanging steel plates 21 are provided with long holes connected to the hanging parts. In this embodiment, the long holes on the hanging steel plates 21 are φ30mm. Each hanging steel plate 21 is welded with 4 reinforcing ribs, and the thickness of the reinforcing ribs is 5mm.

[0038] In this embodiment, the anti-deformation rods 23 are positioned perpendicular to the extension direction of the main purlins 11 during installation. Each anti-deformation rod 23 is associated with three or four sets of connecting rods 20. Each set of connecting rods 20 corresponds to a main purlin 11 and includes two connecting rods 20 located on either side of the main purlin 11. The connecting rods 20 are removably connected to the main purlin 11 via bolts. Two electric chain hoists 22 are located at each end of each anti-deformation rod 23, and two brackets are located on the floor slab 4. In other words, two electric chain hoists 22 on two brackets 18 simultaneously lift one anti-deformation rod 23, thus lifting the ceiling via a plurality of anti-deformation rods 23.

[0039] Through the analysis of the skeleton, the corresponding point of the lifting device is the position of the secondary keel 12, and the strength of the secondary keel 12 cannot meet the lifting requirements. By adding a 200×200×6mm steel square tube as the anti-deformation rod body, that is, the anti-deformation rod 23 is parallel to the extension direction of the secondary keel 12, and the anti-deformation rod 23 is placed at a horizontal vertical angle to the main keel 11 of the ceiling. The connecting rod 20 fixed under the anti-deformation rod body is 12# channel steel, and the connecting rod 20 is connected to the main keel 11 with M16×260mm stainless steel bolts. In order to ensure the welding quality of the connecting rod 20 and the anti-deformation rod body, the galvanized layer within 10mm of the upper end of the channel steel is completely polished off.

[0040] (3) Installation of the support steel plate, trial hoisting, installation of the panel 10. After the installation of the anti-deformation rod 23 is completed, the support steel plate is laid on the ceiling skeleton to form a construction platform after lifting. The support steel plate is detachably connected to the main keel 11. In this embodiment, the support steel plate is a YX75-200-600 floor bearing plate with a thickness of 1.5 mm, and the support steel plate is fixed on the main keel 11 with hexagon screws.

[0041] After the construction quality acceptance of the floor slab 4 is qualified, the lifting member is connected to the hanging steel plate 21 of the anti-deformation rod 23 hoisting frame, and the skeleton is lifted above the floor slab 4 and left stationary. In this embodiment, the skeleton needs to be lifted 1.8 meters above the floor slab 4 and left stationary for 24 hours.

[0042] The panel 10 is fixed under the ceiling skeleton and the flatness of the installation surface of the panel 10 is detected. In this embodiment, the panel 10 is a honeycomb aluminum plate. After the ceiling skeleton is adjusted, the 25-mm-thick honeycomb aluminum plate is installed. The distance from the bottom of the ceiling to the accessible surface of the floor slab 4 is 1.8 m. The height of the fixed angle code of the honeycomb aluminum plate is 18 mm. A 2-mm rubber gasket is lined between the angle code and the ceiling skeleton, and then it is installed and fixed with hexagon screws. After the installation of the honeycomb aluminum plate, the flatness and the hook force data are checked again. After confirming that there is no error, the lifting operation is started. The height of the skeleton is locally adjusted by individually controlling the switch of the electric chain hoist 22 to make the flatness of the ceiling meet the requirements. At this time, the data of the chain pull sensor is locked, and the synchronous lifting system is started to lift the whole at a speed of 9 m per hour. First, it is lifted to a height of 1.8 m. After installing the honeycomb aluminum plate, it is lifted to the installation height.

[0043] The panel 10 includes a plurality of first panels and second panels that are alternately connected. A first fixed angle code 8 is fixed on one side of the first panel facing the second panel. The first fixed angle code 8 is fixed on the skeleton. A slot 15 with an opening facing the second ceiling is provided on the first fixed angle code 8, and a rubber layer is pasted in the slot 15. A second fixed angle code 14 is fixed on one side of the second panel facing the first panel. An insertion plate 16 that is inserted and adapted to the slot 15 of the first fixed angle code 8 is provided on the second fixed angle code 14. A horizontal plate 17 is provided at the upper end of the second fixed angle code 14. When the insertion plate 16 is inserted and adapted to the slot 15, the horizontal plate 17 contacts the bottom of the bracket 18, and an adhesive layer is fixed on one side of the secondary keel 12 facing the bracket 18.

[0044] S4: Ceiling fixing; After multiple lifting devices jointly lift the ceiling as a whole to the installation height, the construction workers enter the construction platform and fixedly connect the upper end of the ceiling connecting member 9 to the secondary steel beam 7 of the floor slab 4.

[0045] After the suspended ceiling is lifted to the installation height, the distance between the floor slab formwork operation platform and the top floor slab 4 is about 1.8 m. The construction workers enter the construction platform through the ladder and weld the suspended ceiling connecting piece 9 to the secondary steel beam 7 of the floor slab 4. At this time, the suspended ceiling is not only welded and connected to the secondary steel beam 7 of the floor slab 4 through the connecting piece, but also the anti-deformation rod 23 of the suspended ceiling is connected to the support 18 on the floor slab 4 through the electric chain hoist 22 with a ring chain.

[0046] S5: Demolish the lifting device, anti-deformation lifting frame and support steel plate; When demolishing the lifting device, first cut off the power supply of the lifting device, remove the hanging parts one by one, and finally remove the support 18 from the floor slab 4. Then the construction workers enter the construction platform, remove the anti-deformation rod 23 from the skeleton, and then use a cutting machine to cut the anti-deformation rod 23 lifting frame into 1 m long sections and carry them out of the construction platform one by one. After all the construction inside the suspended ceiling is completed, remove the support steel plates of the construction platform one by one. The workers transport them outside the suspended ceiling while removing them, and at the same time clean up the residual garbage inside the suspended ceiling.

[0047] S6: Backfill the lifting hole; After the suspended ceiling is installed, pour concrete into the lifting hole 6 to seal the lifting hole 6; After the suspended ceiling is installed, use a template to seal the bottom of the lifting hole 6 and pour concrete in two times. The height of the first concrete pouring is half of the depth of the lifting hole 6. After testing for no leakage, apply waterproof materials, and then fill the remaining concrete to ensure the waterproofness and integrity of the floor slab 4.

[0048] The overall hoisting and installation construction method of the high-altitude connecting corridor suspended ceiling curtain wall of the present invention mainly completes the installation of the suspended bottom of the steel structure connecting corridor according to the principle of ground assembly and overall aerial lifting of the high-altitude suspended ceiling connecting corridor. First, arrange the overall lifting device according to the form and characteristics of the on-site building structure, and set the lifting support 18 at each lifting point at the reserved lifting hole position. Secondly, assemble the overall lifting steel frame on the structural slabs of the 6th and 7th floors. The steel frame is welded and processed according to the drawings directly below the construction part, and the suspended ceiling connecting piece 9 and the support steel plate are installed in advance on the steel frame. Then, install the electric chain hoist 22 on the floor slab 4 at the construction part, pass the hook of the electric chain hoist 22 through the reserved hole and hang it down to connect and fix the suspended ceiling skeleton, and then lift the skeleton to a height of 1.8 m. Then open and install the honeycomb aluminum plate. After the installation of the surface honeycomb aluminum plate is completed, use a total station to measure the flatness of the suspended ceiling, and locally adjust the height of the skeleton through the individual control switch of the electric chain hoist 22 to make the flatness of the suspended ceiling meet the requirements. At this time, lock the data of the pull sensor on the chain and start the synchronous lifting system to lift the whole to the installation height at a speed of 9 m per hour. After the suspended ceiling is lifted to the installation position, the construction workers enter the middle of the suspended ceiling and the 13th floor slab 4 from the 12th floor (elevation 46.4 m) position and weld the suspended ceiling connecting piece 9 to the secondary steel beam 7 of the floor slab 4. After the connection and fixation and anti-corrosion and rust-proof construction are completed, gradually remove the internal auxiliary structure and corrugated steel plate from the middle to both ends.

[0049] Lift the ceiling at the upper floor slab of the corridor, leave the position of the hanging point, set up the hoisting support 18, and then use the "synchronous lifting technology of DHP electric chain hoist 22" to hoist the installed integral ceiling. It has less high-altitude assembly and welding workload, low requirements for on-site mechanical equipment, short high-altitude operation time, and high installation efficiency.

[0050] The installation, caulking, etc. of the horizontal and vertical main keels 11, secondary keels 12, and panels 10 of the honeycomb aluminum plate ceiling are all carried out on the ground. The quality of the rectification construction process can be effectively controlled, and the installation construction efficiency is high. Compared with the traditional high-altitude corridor bottom suspension construction, the high-altitude operation time is reduced.

Claims

1. The overall hoisting and installation construction method for the ceiling curtain wall of the high-altitude connecting corridor, characterized in that The following steps are involved: S1: Pre-buried lifting holes in the floor slab. Before floor slab construction, the reserved positions of the lifting holes are determined. When the floor deck is installed, circular tubes are used in conjunction with the coordinates of the unit plate lifting points to set the pre-buried tubes. Then, concrete is poured to form the floor slab. The circular tubes and pre-buried tubes form lifting holes on the floor slab. S2: Install lifting device; It includes a bracket detachably mounted on the floor corresponding to the lifting hole and a hanging piece fixed on the bracket, the hanging piece extends downward from the lifting hole to the bottom of the floor; a plurality of lifting devices are correspondingly arranged on the floor, and the hanging pieces of the plurality of lifting devices operate synchronously; S3: Ceiling processing and production; (1) Ceiling frame welding. The ceiling frame includes a main keel and a secondary keel welded vertically to the main keel. Ceiling connectors are fixed at intervals in the extension direction of the main keel. One end of the ceiling connector is fixedly connected to the main keel, and the other end of the ceiling connector is used to be fixedly connected to the floor slab; (2) Installation of the anti-deformation rod. The anti-deformation rod includes an anti-deformation rod body and a connecting rod fixed below the anti-deformation rod body. The anti-deformation rod body is arranged above the ceiling frame. The anti-deformation rod body and the main keel of the ceiling frame are perpendicular to each other. The connecting rod is detachably connected to the main keel. Hanging steel plates are fixed at both ends of the anti-deformation rod body. Long strip holes for connecting with the hanging parts are opened on the hanging steel plates. (3) After installing the supporting steel plate, trial hoisting, panel installation, and anti-deformation rods, the supporting steel plate is spread over the ceiling frame to form a construction platform after lifting. The supporting steel plate is detachably connected to the main keel; After the floor slab construction quality is accepted, connect the hanging parts to the hanging steel plates of the anti-deformation rods, and lift the frame to the top of the floor slab and let it rest; Fix the panel under the ceiling frame and check the flatness of the panel installation surface; S4: Ceiling fixation: After multiple lifting devices jointly raise the ceiling to the installation height, workers enter the construction platform and fix the upper end of the ceiling connector to the secondary steel beam of the floor slab; S5: Removal of lifting device, anti-deformation hoisting frame and supporting steel plate; S6: Backfill the lifting holes; after the ceiling installation is completed, pour concrete into the lifting holes to seal them.

2. The overall hoisting and installation construction method of the high-altitude corridor ceiling curtain wall according to claim 1 is characterized in that, The bracket is a rectangular bracket, the bottom of the bracket is fixed on the floor, a hanging beam is set in the middle of the top of the bracket, an "Ω"-shaped hanger is fixed below the hanging beam, and the hanger is fixed on the hanger.

3. The overall hoisting and installation construction method of the high-altitude corridor ceiling curtain wall according to claim 1 or 2, characterized in that, In S3, before welding the ceiling frame, the main steel structure of the ceiling is measured using a total station, modeled using BIM technology, and then the data is extracted. A laser plumb line is used to project the ceiling processing data onto the processing area directly below the installation position of the ceiling frame. The accuracy of the reference points is remeasured using the total station, and the equal deviation centering method is used to eliminate small deviations between the reference points.

4. The overall hoisting and installation construction method of the high-altitude corridor ceiling curtain wall according to claim 1 or 2, characterized in that, Four reinforcing ribs are welded between the hanging steel plate and the hoisting anti-deformation rod.

5. The overall hoisting and installation construction method of the high-altitude corridor ceiling curtain wall according to claim 1 or 2, characterized in that, The panel and the frame are connected via fixed angle brackets, and a rubber gasket is padded between the fixed angle brackets and the frame.

6. The overall hoisting and installation construction method of the high-altitude connecting corridor ceiling curtain wall according to claim 5, characterized in that, The panel includes a number of first panels and second panels that are alternately and connectedly arranged. On one side of the first panel facing the second panel, a first fixing corner bracket is fixed, and the first fixing corner bracket is fixed on the skeleton. A slot with an opening facing the second ceiling is provided on the first fixing corner bracket; on one side of the second panel facing the first panel, a second fixing corner bracket is fixed, and a plug board that is inserted and adapted to the slot of the first fixing corner bracket is provided on the second fixing corner bracket; a horizontal plate is provided at the upper end of the second fixing corner bracket. When the plug board is inserted and adapted to the slot, the horizontal plate contacts the bottom of the bracket, and an adhesive layer is fixed on the side of the horizontal plate facing the bracket.

7. The overall hoisting and installation construction method of the high-altitude corridor ceiling curtain wall according to claim 1 or 2, characterized in that, In S5, when the lifting device is removed, first cut off the power of the lifting device, remove the hanging parts one by one, and finally remove the bracket from the floor slab; then the construction workers enter the construction platform, remove the anti-deformation rod hoisting frame from the skeleton, and then use a cutting machine to cut the anti-deformation rod hoisting frame into sections and carry them out of the construction platform one by one; after all the construction inside the ceiling is completed, remove the support steel plates of the construction platform one by one.

8. The overall hoisting and installation construction method of the high-altitude connecting corridor ceiling curtain wall according to claim 1 or 2, characterized in that in S6, after the ceiling installation is completed, use a template to block the bottom of the hoisting hole, pour concrete in two times. The height of the first concrete pouring is half of the depth of the hoisting hole. After testing for no leakage, apply waterproof materials, and then fill the remaining concrete to ensure the waterproofness and integrity of the floor slab.

9. The overall hoisting and installation construction method of the high-altitude connecting corridor ceiling curtain wall according to claim 1 or 2, characterized in that in S2, a synchronous control system for the hanging parts of each lifting device is installed. The synchronous control system includes a controller, a weight sensor controlled and connected to the controller, an external display controlled and connected to the controller, and a wireless remote control controlled and connected to the controller. The weight sensor is arranged on the hanging part, and the single-point load tension value in the normal working state of a single point is set on the weight sensor. The external display shows the stress data during the hoisting process; when the set tension is exceeded, after the external display shows the tension, the weight sensor will alarm and cut off the power, and then the unevenly stressed hanging part is lifted or lowered through the wireless remote control to keep the whole system in a balanced state.

10. The overall hoisting and installation construction method of the high-altitude corridor ceiling curtain wall according to claim 1 or 2, characterized in that, The main keel includes a number of connecting sections that are spliced and connected. The adjacent connecting sections are fixedly connected through a first core plug; the secondary keel and the main keel are fixedly connected through a second core plug; both the first core plug and the second core plug are "D"-shaped core plugs.

Images