A construction method for large-area special-shaped aluminum plate ceiling with irregular arc structure

Abstract

The present invention relates to the field of ceiling construction technology, and more specifically, to a method for constructing a large-area, special-shaped aluminum plate ceiling with an irregular arc structure. The method comprises the following steps: S1, entity measurement; S2, BIM in-depth design, drawing layout drawings, and drawing aluminum plate processing drawings; S3, formulating a material processing plan; S4, construction of a steel transition layer; S5, seismic isolation treatment in pipeline-dense areas and under large equipment; S6, positioning of primary and secondary keels; S7, pipeline laying, initial positioning of terminal equipment; S8, aluminum plate installation; S9, movable inspection ports, and equipment installation. The construction method ensures the construction quality of the installation of large-area special-shaped aluminum plates, and improves the progress and one-time pass rate of the aluminum plate installation. The present invention is mainly used in the construction of large-area, special-shaped aluminum plate ceilings with irregular arc structures.

Description

Technical Field

[0001] The present invention relates to the technical field of suspended ceiling construction, and more specifically to a method for constructing a suspended ceiling with an irregular arc structure and a large area of ​​special-shaped aluminum plates. Background Art

[0002] With people's aesthetics and demand for building quality, higher artistic pursuits have been put forward for building appearance and interior decoration. Various types of architectural art forms have emerged, and the building shape has gradually changed from rectangular to various irregular shapes, arcs, and curves. Special-shaped building interior ceilings usually have the characteristics of irregular shape, large area, and high precision requirements.

[0003] In the prior art, conventional construction methods cannot achieve the designed appearance for ceilings with irregular curved surfaces. The emergence of hook-type aluminum panels has improved this problem to a certain extent. The single-piece area of ​​hook-type aluminum panels is large, and it is impossible to set hangers according to the designed spacing in places with dense pipelines and large equipment. The vibration of the equipment will cause the aluminum panel surface to deform. The seismic isolation technology is used to solve this problem. In large-area special-shaped aluminum panel ceiling projects, there are difficulties in measurement and positioning, time-consuming on-site enlargement of samples, and large-area installations are prone to shaking, falling off, and misalignment, and the joints are not straight. Therefore, research on special-shaped building aluminum panel ceiling technology is particularly important. Summary of the invention

[0004] In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a method for constructing a large-area irregular arc-shaped aluminum plate ceiling. The construction method achieves the purpose of sound insulation and noise reduction, and uses BIM+line-laying robot+3D laser scanning to achieve precise processing and installation of aluminum plates, ensuring the construction quality of large-area special-shaped aluminum plate installation, and improving the progress and first-time pass rate of aluminum plate installation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A method for constructing a large-area irregular curved aluminum plate ceiling comprises the following steps:

[0007] S1. Entity measurement;

[0008] S2. BIM in-depth design, drawing layout drawings, and drawing aluminum plate processing drawings;

[0009] S3. Develop material processing plan;

[0010] S4, steel transfer layer construction;

[0011] S5. Seismic isolation treatment in pipeline-intensive areas and under large equipment;

[0012] S6, positioning of primary and secondary keels;

[0013] S7, pipeline laying and initial placement of terminal equipment;

[0014] S8, aluminum plate installation;

[0015] S9, movable inspection door, equipment installation.

[0016] In step S1, a 3D scanner is used to scan the completed main body, masonry structure, and pipeline entities on site to collect 3D data, and the captured real data is integrated with the BIM model.

[0017] In step S2, the integrated BIM model drawings of various disciplines are imported into the surveying and laying-out robot, and the measurement and laying of the ceiling control line, the side keel control line, the hanger position, and the 0.5m elevation line are completed in combination with the copied reference points. The ceiling control line is measured and laid on the wall and the ground, and the control lines of different special-shaped areas are laid out based on the main control line.

[0018] In step S2, a layout diagram is drawn: after the BIM model is built, the aluminum plates are divided and numbered, and the order of aluminum plate installation is clarified during planning and marked in the BIM model diagram and design drawings;

[0019] Draw the aluminum plate processing diagram: Draw different aluminum plate processing diagrams according to different areas and different plate shapes in the area, and draw the diagrams in blocks, indicating the order of processing. The drawings should show the parts of the aluminum plate to be processed, the locations where holes or openings need to be made, the form of aluminum plate hole reinforcement, the data required for aluminum plate size processing, and the processing size error should be controlled within 0.5mm.

[0020] In step S3, a processing list of aluminum plate production materials to be processed is prepared in the BIM model, and relevant parameter information is noted to form an aluminum plate processing schedule, which is sorted in the order of regional aluminum plate numbers;

[0021] Prepare the material processing plan according to the aluminum plate numbering diagram, and organize the material pick list. The order of the aluminum plates in the material pick list should be consistent with the order of installation planned on site.

[0022] In step S4, a steel transfer layer is set for the hollow floor slab ceiling and when the length of the suspension rod is greater than 2500mm; the ceiling steel transfer layer forms a tic-tac-toe frame system, an angle steel frame is set 200mm away from the edge of the wall, and the arrangement of the longitudinal and transverse keels of the transfer layer is set according to the position of the hollow floor slab rib beam.

[0023] In step S5, the spacing between the hangers exceeds the standard 1200mm, and the local position is close to the integrated ceiling support. Seismic isolation and shock absorption are adopted during construction. When the equipment vibrates during operation, it will not affect the safety of the ceiling. For this reason, rubber shock-absorbing pads are installed on square steel for shock absorption, and micro shock-absorbing devices are installed on the hangers on both sides.

[0024] In step S6, the positioning and installation of the primary and secondary keels include the following steps:

[0025] Step 1: Locate the main keel suspension rod position on the steel transfer layer according to the design drawing. The suspension rod length is uniform. Adjust the nut on the hanging piece to achieve fine adjustment of the suspension rod height. Set a shock-absorbing device at the bottom of the suspension rod. After the hanging piece, hanging rod and shock-absorbing device are assembled, install the hanging piece on the steel transfer layer, and then install the light steel main keel.

[0026] Step 2: After the main keel is installed in place, it is leveled according to the elevation line. For the keel that is too long, in order to prevent the middle part from bending and deforming and forming a downward arc, pre-arching treatment is performed, and the arch is raised along the short span. For the aluminum ceiling in irregular and special-shaped areas, it is not suitable to arch. Leveling treatment is performed according to the unified elevation. A green light infrared level is set up at an appropriate position under the height of the ceiling. The light steel main keel and nut are adjusted to make the elevation of the light steel main keel consistent and in the same horizontal plane. The exposed length of the hanger thread is not less than 3 complete threads; the end hanging point of the light steel main keel should not be greater than 300mm from the edge of the main keel, and the distance between the end row hanging point and the side wall should not be greater than 200mm; the secondary keel is connected to the main keel with a hanging piece, and the side keel is installed on the surrounding protective structure of the room. The lower edge is flush with the standard line and fixed with expansion bolts. The spacing should not be greater than 500mm, and the end should not be greater than 50mm.

[0027] In step S7, after the installation of the primary and secondary light steel keels is completed, the position of the terminal equipment is accurately located according to the BIM layout drawing, and the pipelines are pre-laid in place and the connecting lines of the terminal equipment are thrown to the corresponding positions.

[0028] In step S8, the ceiling installation adopts the method of overall positioning + partition control, and uses a measuring and setting-out robot in conjunction with a measuring tool to complete the measurement and setting of control lines and points, determine the order of construction, clarify internal control requirements, and avoid the independent positioning of each block, which causes the handover parts to be unable to connect and cause large deviations;

[0029] The concentrated area of ​​the blocks should be selected, and the special-shaped aluminum plate or the longest aluminum plate connected to each block should be selected as the starting section of the aluminum plate ceiling installation. The edge line of the starting aluminum plate installation should be determined according to the general control line and the block control line, and fixings should be added on both sides or in the middle to ensure that the starting aluminum plate does not move left and right after positioning. The aluminum plate in the middle area should be pulled with nylon lines vertically and horizontally to form a cross-staggered control line;

[0030] Fixing of the main hollow of the starting aluminum plate ceiling: fix the starting keel firmly on the steel transfer layer bracket, adjust the nuts on the hanging parts to make it tight against the transfer layer bracket, and make oblique keels at the longitudinal and transverse main keels for reinforcement, ensure that the light steel main keel is fixed in place and does not move, and the fixing interval is not more than 2m, so as to form a solid keel skeleton;

[0031] Take the keel with the starting plate firmly fixed as the reference, install other light steel main keels in sequence, and check against the positioning line after installing 5-6 pieces vertically and horizontally to see if they are aligned with the nylon line; after alignment, install the side keel; before installing the light steel secondary keel, mark the position of the ceiling aluminum plate installation starting plate on the light steel main keel, and use dovetail wire to fix the starting plate on the secondary keel. After adjusting it in place, form the initial aluminum plate installation unit, and use it as the reference block to install other aluminum plates; install the aluminum plates to both ends in sequence. When installing, you only need to hang the secondary keel on the main keel, and hang the hook-type aluminum plate on the light steel secondary keel. The hook-type aluminum plate and the aluminum plate are connected with a clamp, and the gap is sealed with shockproof glue;

[0032] When installing aluminum plates with holes for lamps, fire sprinkler holes, air conditioning vents, broadcasting, etc., relevant professionals should cooperate with ceiling operators to fix the terminal equipment in place in time. If the equipment cannot be fixed in time, the power cord, network cable, electrical wire, signal cable, etc. should be led out from the holes in the aluminum plate in time, and the BIM drawings should be compared to achieve accurate lead-out;

[0033] When installing the aluminum plate, the U-shaped keel is clipped into the main keel, and the aluminum plates are fastened with clips to achieve precise positioning and locking.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The construction method of irregular arc-shaped large-area special-shaped aluminum plate ceiling proposed in the present invention solves the problem of poor comprehensive positioning accuracy of large-area ceiling and pipelines in complex spaces with special-shaped structures, changes the practice of installing aluminum plates from the middle position and one end of the structure as the starting point, realizes multi-point operation and overall assembly, reduces the time consumed by enlarging the ground and top surfaces, aligning, and correcting, and solves the problems of large-area aluminum plates being easy to shake, fall off, misaligned, and uneven joints. Square steel pipes, shrinkage damping strips, screws, and self-made shock absorbers are used to form ceiling brackets under dense pipelines and large equipment to reduce the impact of equipment on the ceiling and achieve the purpose of sound insulation and noise reduction. BIM+line-laying robot+3D laser scanning are used to realize precise processing and installation of aluminum plates, ensuring the construction quality of large-area special-shaped aluminum plate installation and improving the progress and first-time pass rate of aluminum plate installation.

[0036] This method uses a 3D laser scanner to scan the on-site entity, uses BIM software to comprehensively arrange the special-shaped aluminum plate ceiling, and clarifies the order of processing and installation of aluminum plates in different areas. The aluminum plates are numbered to avoid confusion that affects the installation progress. After numbering, the manufacturer will carry out batch production according to the material list, and produce them in batches according to the region during production; all terminal lamps, sprinkler heads, vents, inspection ports, etc. are all processed and formed in the factory and reinforced. This construction method can improve the speed of processing and installation and the accuracy of on-site installation, shorten the construction period, and reduce the overall construction cost.

[0037] The method utilizes a measuring robot to zone and locate the aluminum plate ceiling in different structural shape areas according to the BIM layout diagram, and uses nylon wire to accurately locate the details of each area. The starting end installation unit is fixed in the middle of the ceiling in each area, and a clamping ring for hanging plates and plates is set on one side of the board. A special buckle is used to achieve a simple connection between the two plates, thereby achieving the purpose of installing the irregular arc-shaped hook-type aluminum plate block ceiling from the middle to the four sides. The method uses BIM+measuring and laying-out robots to locate the ceiling block as a whole, and a block-controlled construction method. A seismic isolation device is set at the connection between the hanger and the main keel, a clamping ring for hanging is set on the first layer of the ceiling board, and the hook-type aluminum plate is installed using the shock-absorbing and closing technology of the ceiling board. The method has the advantages of fast construction speed, high construction precision, fast coordination between professionals, and high operational safety, and can achieve the purpose of one-time excellence in sub-projects.

[0038] This method is suitable for the construction of aluminum plate ceilings, especially the installation advantages of hook-type aluminum plate ceilings with special-shaped structures and large spaces. This construction method is used to effectively control the construction and installation quality of aluminum plates, and fully consider the impact of equipment vibration on aluminum plates and their keels. A seismic isolation design is adopted, and the construction quality meets the requirements of the specifications. In addition, the BIM technology is used for optimized design, so that the terminal equipment can be arranged in rows and lines, meeting the standards for excellence. Good results have been achieved in terms of quality, safety, progress, environmental protection, etc., and it has a high value of use and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a process flow chart of the present invention;

[0040] Figure 2 This is a schematic diagram of a hook-type aluminum plate ceiling;

[0041] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0042] Figure 4 It is a schematic diagram of the micro shock absorbing device in the present invention;

[0043] Figure 5 This is a schematic diagram of the ceiling keel and seismic isolation device under the pipeline-intensive area and large equipment;

[0044] Figure 6 Schematic diagram of shock absorption under large equipment. DETAILED DESCRIPTION

[0045] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from the description. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0047] like Figures 1 to 5 As shown, the construction method of irregular arc structure large area special-shaped aluminum plate ceiling includes a transfer layer bracket, a ceiling hanger is arranged under the bracket, and the ceiling hanger is provided with a shock-absorbing device at the location where pipelines are densely packed and large equipment. The bottom end of the bottom shock-absorbing device is square steel, and a rubber shock-absorbing pad is bonded to the square steel. A micro shock-absorbing device composed of a rubber ring, a gasket, a nut, and a U-shaped hanger is arranged on the hanger. The shock-absorbing device is connected to the U-shaped light steel main keel, and the light steel main keel is connected to the secondary keel with a hanging piece. The hook plate is hung on the secondary keel, and the gap between the plates is sealed with shock-proof glue.

[0048] The construction method includes the following steps:

[0049] Physical measurement;

[0050] BIM in-depth design, drawing layout drawings, and drawing aluminum plate processing drawings;

[0051] Develop material processing plans;

[0052] Construction of steel transfer layer;

[0053] Seismic isolation treatment in pipeline-dense areas and under large equipment;

[0054] Positioning of primary and secondary keels;

[0055] Pipeline laying and initial placement of terminal equipment;

[0056] Aluminum plate installation;

[0057] Movable inspection opening and equipment installation.

[0058] Preferably, the entity measurement comprises the following steps:

[0059] 3D scanning: Use a 3D scanner to scan the completed main body, masonry structure, and pipeline entities on site, collect 3D data, and integrate the captured real data with the BIM model.

[0060] BIM in-depth design: Master the parameters such as materials, colors, and grids reflected in the design drawings, and fully understand the design intent. And inspect the equipment and products of the aluminum plate manufacturer to be selected. On the real BIM model diagram, according to the professional construction drawings of each equipment combined with the needs of lighting, ventilation and air conditioning, weak current, fire protection, signal and other professions, reasonably optimize the position of terminal equipment such as air vents, lighting fixtures, fire protection and weak current broadcasting, sprinklers, smoke sensors, and inspection ports. Under the premise of meeting the standard spacing and lighting brightness, they should be arranged in rows and lines with consistent arcs. All equipment should be located in the board, and the local positions should be symmetrical and unified. The layout of the keel should be staggered with the layout of the air vents, lamps, sprinkler heads, inspection holes, monitoring, lifting projectors and other equipment and facilities of the air conditioning and ventilation system, and the main keel should not be cut off.

[0061] Model output and measurement and layout: Import the integrated BIM model drawings of various disciplines into the measurement and layout robot, and complete the measurement and layout of the ceiling control line, side keel control line, suspension rod position, and 0.5m elevation line in combination with the copied reference points. The ceiling control line should be measured and laid out on the wall and the ground, and the control lines of different special-shaped areas should be laid out based on the main control line.

[0062] Draw the layout diagram: After the BIM model is completed, the aluminum plates should be divided and numbered. The order of aluminum plate installation should be clearly defined during planning and marked in the BIM model diagram and design drawings.

[0063] Draw the aluminum plate processing diagram: Draw different aluminum plate processing diagrams according to different areas and different plate shapes in the area, and divide the drawings into blocks, indicating the order of processing. The drawings should show the parts of the aluminum plate to be processed, the locations where holes or openings need to be made, the form of aluminum plate hole reinforcement, the aluminum plate size and other data required for processing. The processing size error should be controlled within 0.5mm.

[0064] In the BIM model, the aluminum plate production material processing list that needs to be processed is listed, and the relevant parameter information is noted to form an aluminum plate processing schedule. It should be sorted in the order of regional aluminum plate numbers.

[0065] Prepare the material processing plan according to the aluminum plate numbering diagram, and prepare the material pick list. The order of the aluminum plates in the material pick list should be consistent with the order of planned installation on site.

[0066] Steel transfer layer construction: For hollow floor slab ceilings and suspension rods longer than 2500mm, a steel transfer layer should be set. The ceiling steel transfer layer should form a well-shaped frame system, with an angle steel frame set 200mm from the edge to the wall, and the layout of the longitudinal and transverse keels of the transfer layer should be set according to the position of the hollow floor slab rib beam.

[0067] Seismic isolation is carried out in pipeline-dense areas and under large equipment; the spacing between hangers in this area exceeds the standard 1200mm, and some local locations are close to the integrated ceiling bracket. Seismic isolation and shock reduction are adopted during construction. The safety of the ceiling will not be affected when the equipment vibrates during operation. For this reason, rubber shock-absorbing pads are installed on square steel to reduce shock, and micro shock-absorbing devices consisting of rubber rings, gaskets, nuts, and U-shaped pendants are installed on the hangers on both sides.

[0068] The positioning and installation of the primary and secondary keels include the following steps:

[0069] Step 1: Locate the main keel suspension rod position on the steel transfer layer according to the design drawing. The suspension rod length is uniform. Adjust the nut on the hanging piece to achieve fine adjustment of the suspension rod height. Set a shock absorber at the bottom of the suspension rod. The shock absorber consists of a U-shaped part, a spring, a straight steel plate, a rubber ring, a gasket, a bolt, etc. After the hanging piece, the suspension rod, and the shock absorber are assembled, install the hanging piece on the steel transfer layer, and then install the light steel main keel.

[0070] Step 2: After the main keel is installed, it should be leveled according to the elevation line. For the overlong keel, in order to prevent the middle part from bending and deforming and forming a downward arc, pre-arching treatment should be done, and the arching should be done along the short span. For the aluminum ceiling in the irregular and special-shaped area, it is not suitable to arch, and it should be leveled according to the unified elevation. A green light infrared level is set up at an appropriate position under the ceiling height, and the light steel main keel and nut are adjusted to make the light steel main keel elevation consistent and in a horizontal plane. The exposed length of the hanging rod thread should not be less than 3 complete threads; the end hanging point of the light steel main keel should not be greater than 300mm from the edge of the main keel, and the end row hanging point should not be greater than 200mm from the side wall. The secondary keel is connected to the main keel with a hanging piece, and the side keel is installed on the surrounding protective structure of the room. The lower edge is flush with the standard line and fixed with expansion bolts. The spacing should not be greater than 500mm, and the end should not be greater than 50mm.

[0071] Pipeline laying and terminal equipment placement: After the installation of the primary and secondary light steel keels is completed, the position of the terminal equipment is found according to the BIM layout drawing, and the pipelines are laid in place in advance and the connecting lines of the terminal equipment are placed in the corresponding positions.

[0072] The installation of suspended ceiling aluminum panels includes the following steps:

[0073] The installation of suspended ceilings adopts the method of overall positioning + zone control, and uses a measuring and laying-out robot in conjunction with measuring tools to complete the measurement and setting of control lines and points. It is necessary to determine the order of construction and clarify internal control requirements to avoid independent positioning of each block, which will cause the junction to be unable to connect and produce large deviations.

[0074] A relatively concentrated area of ​​blocks should be selected, and special-shaped aluminum plates or the longest aluminum plates connecting all blocks should be selected as the starting section of the aluminum ceiling installation. The edge line of the starting aluminum plate installation should be determined according to the general control line and the block control line, and fixings should be added on both sides or in the middle to ensure that the starting aluminum plate does not move left and right after positioning. Nylon lines should be pulled vertically and horizontally on the aluminum plates in the middle area to form cross-staggered control lines. The nylon lines should not be too long, otherwise deformation and deflection will occur.

[0075] Fixing of the main hollow of the starting aluminum plate ceiling: the starting keel should be firmly fixed on the steel transfer layer bracket, the nut on the hanging part should be adjusted to make it tight against the transfer layer bracket, and the oblique keel should be made at the longitudinal and transverse main keels for reinforcement to ensure that the light steel main keel is fixed in place and does not move. The fixing spacing is not more than 2m to form a solid keel skeleton.

[0076] Take the keel with the starting plate firmly fixed as the reference, install other light steel main keels in sequence, and check against the positioning line after installing 5-6 pieces vertically and horizontally to see if they are aligned with the nylon line; after alignment, install the side keel; before installing the light steel secondary keel, mark the position of the ceiling aluminum plate installation starting plate on the light steel main keel, and use dovetail wire to fix the starting plate on the secondary keel. After adjusting it in place, form the initial aluminum plate installation unit, and use this as the reference block to install other aluminum plates. Install the aluminum plates at both ends in sequence. When installing, you only need to hang the secondary keel on the main keel, and hang the hook-type aluminum plate on the light steel secondary keel. The hook-type aluminum plate and the aluminum plate are connected with a clamp, and the gap is sealed with shockproof glue.

[0077] When installing aluminum plates with holes for lamps, fire sprinkler holes, air conditioning vents, broadcasts, etc., relevant professionals should cooperate with the ceiling operators to promptly fix the terminal equipment in place. If the equipment cannot be fixed in time, the power cord, network cable, electrical wires, signal cables, etc. should be promptly led out from the holes in the aluminum plate, and compared with the BIM drawings to achieve accurate lead-out.

[0078] When installing the aluminum plate, the U-shaped keel is clipped into the main keel, and the aluminum plates are fastened with clips to achieve precise positioning and locking.

[0079] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A method for constructing a large-area irregular arc-shaped aluminum plate ceiling, characterized in that: The following steps are involved: S1. Entity measurement; S2. BIM in-depth design, drawing layout drawings, and drawing aluminum plate processing drawings; S3. Develop material processing plan; S4, steel transfer layer construction; S5. Seismic isolation treatment in pipeline-intensive areas and under large equipment; S6, positioning of primary and secondary keels; S7, pipeline laying and initial placement of terminal equipment; S8, aluminum plate installation; S9, movable inspection port, equipment installation; In step S2, the integrated BIM model drawings of various disciplines are imported into the measurement and layout robot, and the ceiling control line, side keel control line, suspension rod position, and 0.5m elevation line are measured and laid out in combination with the copied reference points. The ceiling control line is measured and laid out on the wall and the ground, and the control lines of different special-shaped areas are laid out according to the main control line. In step S2, a layout diagram is drawn: after the BIM model is built, the aluminum plates are divided and numbered, and the order of aluminum plate installation is clarified during planning and marked in the BIM model diagram and design drawings; Draw the aluminum plate processing diagram: Draw different aluminum plate processing diagrams according to different areas and different plate shapes in the area, and draw them in blocks, indicating the order of processing. The drawings should show the parts of the aluminum plate to be processed, the locations where holes or openings need to be made, the form of aluminum plate hole reinforcement, and the data required for aluminum plate size processing. The processing size error should be controlled within 0.5mm; In step S6, the positioning and installation of the primary and secondary keels include the following steps: Step 1: Locate the main keel suspension rod position on the steel transfer layer according to the design drawing. The suspension rod length is uniform. Adjust the nut on the hanging piece to achieve fine adjustment of the suspension rod height. Set a shock-absorbing device at the bottom of the suspension rod. After the hanging piece, hanging rod and shock-absorbing device are assembled, install the hanging piece on the steel transfer layer, and then install the light steel main keel. Step 2: After the main keel is installed in place, it is leveled according to the elevation line. For the overlong keel, in order to prevent the middle part from bending and deforming and forming a downward arc, pre-arching treatment is performed, and the arch is raised along the short span. For the aluminum ceiling in the irregular and special-shaped area, it is not suitable to arch. Leveling treatment is performed according to the unified elevation. A green light infrared level is set up at an appropriate position under the ceiling height, and the light steel main keel and nut are adjusted to make the light steel main keel elevation consistent and in the same horizontal plane. The exposed length of the hanging rod thread is not less than 3 complete threads; the end hanging point of the light steel main keel is not more than 300mm away from the edge of the main keel, and the end row hanging point is not more than 200mm away from the side wall; the secondary keel is connected to the main keel with a hanging piece, and the side keel is installed on the surrounding protective structure of the room. The lower edge is flush with the standard line and fixed with expansion bolts. The spacing should not be greater than 500mm, and the end should not be greater than 50mm; In step S8, the ceiling installation adopts the method of overall positioning + partition control, and uses a measuring and setting-out robot in conjunction with a measuring tool to complete the measurement and setting of control lines and points, determine the order of construction, clarify internal control requirements, and avoid deviations caused by the inability to connect the intersections due to independent positioning of each block; Select the concentrated area of ​​the blocks, select the special-shaped aluminum plate or the longest aluminum plate connected to each block as the starting section of the aluminum plate ceiling installation, determine the edge line of the starting aluminum plate installation according to the general control line and the block control line, and add fixings on both sides or in the middle to ensure that the starting aluminum plate does not move left and right after positioning. Pull nylon lines vertically and horizontally on the aluminum plate in the middle area to form a cross-staggered control line; Fixing of the main keel of the starting aluminum plate ceiling: fix the starting keel firmly on the steel transfer layer bracket, adjust the nuts on the hanging parts to make it tight with the transfer layer bracket, and make oblique keels at the longitudinal and transverse main keels for reinforcement, ensure that the light steel main keel is fixed in place and does not move, and the fixing interval is not more than 2m, so as to form a solid keel skeleton; Take the keel with the starting plate firmly fixed as the reference, install other light steel main keels in sequence, and check against the positioning line after installing 5-6 pieces vertically and horizontally to see if they are aligned with the nylon line; after alignment, install the side keel; before installing the light steel secondary keel, mark the position of the ceiling aluminum plate installation starting plate on the light steel main keel, and use dovetail wire to fix the starting plate on the secondary keel. After adjusting it in place, form the initial aluminum plate installation unit, and use it as the reference block to install other aluminum plates; install the aluminum plates to both ends in sequence. During installation, you only need to hang the secondary keel on the main keel, and hang the hook-type aluminum plate on the light steel secondary keel. The hook-type aluminum plate and the aluminum plate are connected with a clamp, and the gap is sealed with shockproof glue; When installing aluminum plates with lighting holes, fire sprinkler holes, air conditioning vents, and broadcasting holes, relevant professionals will cooperate with ceiling operators to fix the terminal equipment in place in time. If the equipment cannot be fixed in time, the power cord, network cable, electrical wire, and signal cable will be led out from the holes in the aluminum plate in time, and the BIM drawings will be compared to achieve accurate lead-out; When installing the aluminum plate, the U-shaped keel is clipped into the main keel, and the aluminum plates are fastened with clips to achieve precise positioning and locking.

2. The method for constructing a large-area irregular arc-shaped aluminum ceiling according to claim 1, characterized in that: In step S1, a 3D scanner is used to scan the completed main body, masonry structure, and pipeline entities on site to collect 3D data, and the captured real data is integrated with the BIM model.

3. The method for constructing a large-area irregular arc-shaped aluminum plate ceiling according to claim 1, characterized in that: In step S3, a processing list of aluminum plate production materials to be processed is prepared in the BIM model, and relevant parameter information is noted to form an aluminum plate processing schedule, which is sorted in the order of regional aluminum plate numbers; Prepare the material processing plan according to the aluminum plate numbering diagram, and organize the material pick list. The order of the aluminum plates in the material pick list should be consistent with the order of installation planned on site.

4. The method for constructing a large-area irregular arc-shaped aluminum ceiling according to claim 1, characterized in that: In step S4, a steel transfer layer is set for the hollow floor slab ceiling and when the length of the suspension rod is greater than 2500mm; the ceiling steel transfer layer forms a tic-tac-toe frame system, an angle steel frame is set 200mm away from the edge of the wall, and the arrangement of the longitudinal and transverse keels of the transfer layer is set according to the position of the hollow floor slab rib beam.

5. The method for constructing a large-area irregular arc-shaped aluminum ceiling according to claim 1 is characterized in that: In step S5, the spacing between the hangers exceeds the standard 1200mm, and the local position is close to the integrated ceiling support. Seismic isolation and shock absorption are adopted during construction. When the equipment vibrates during operation, it will not affect the safety of the ceiling. For this reason, rubber shock-absorbing pads are installed on square steel for shock absorption, and micro shock-absorbing devices are installed on the hangers on both sides.

6. The method for constructing a large-area irregular arc-shaped aluminum ceiling according to claim 1, characterized in that: In step S7, after the installation of the primary and secondary light steel keels is completed, the position of the terminal equipment is accurately located according to the BIM layout drawing, and the pipelines are pre-laid in place and the connecting lines of the terminal equipment are thrown to the corresponding positions.

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