CN115929048A - Construction method for large-area special-shaped aluminum plate ceiling with irregular arc-shaped structure - Google Patents

Abstract

The invention relates to the technical field of suspended ceiling construction, in particular to a construction method of a large-area special-shaped aluminum plate suspended ceiling with an irregular arc-shaped structure. The method comprises the following steps: s1, measuring an entity; s2, carrying out BIM deepening design, drawing a layout drawing, and drawing an aluminum plate machining drawing; s3, making a material processing plan; s4, constructing a section steel transfer layer; s5, performing shock insulation treatment on the pipeline dense area and the lower part of the large equipment; s6, positioning the primary keel and the secondary keel; s7, laying a pipeline and initially positioning tail-end equipment; s8, mounting an aluminum plate; s9, installing equipment at a movable access hole. The construction method ensures the construction quality of the installation of the large-area special-shaped aluminum plate and improves the installation progress and the primary qualified rate of the aluminum plate. The invention is mainly applied to the construction aspect of the irregular arc-shaped large-area special-shaped aluminum plate suspended ceiling.

Description

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

technical field

The invention relates to the technical field of suspended ceiling construction, and more specifically relates to a construction method for a large-area special-shaped aluminum plate suspended ceiling with an irregular arc structure.

Background technique

With people's aesthetics and demand for architectural quality, higher artistic pursuits have been put forward for architectural appearance and interior decoration. Various types of architectural art forms have emerged as the times require, and architectural shapes have gradually changed from rectangles to various irregular shapes and arcs. shape, curve shape transformation. Indoor ceilings of special-shaped buildings usually have the characteristics of irregular shape, large area, and high precision requirements.

In the prior art, in view of irregular curved surface ceilings, conventional construction methods cannot achieve design effects in appearance, and the emergence of hook-up aluminum plates has improved this problem to a certain extent. The hook-up aluminum plate has a large single-width area, and it is impossible to set the suspenders according to the designed spacing in places with dense pipelines and large-scale equipment, and the vibration of the equipment will cause deformation of the aluminum plate surface. The shock-absorbing and isolation technology is used to solve this problem. In the large-area special-shaped aluminum ceiling project, there are difficulties in measurement and positioning, time-consuming on-site sample enlargement, large-area installation is easy to shake, fall off, misplaced, and the joints are not straight. Therefore, the research on special-shaped building aluminum ceiling technology is particularly important.

Contents of the invention

In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a construction method for a large-area special-shaped aluminum plate ceiling with an irregular arc structure. This construction method achieves the purpose of sound insulation and noise reduction. BIM+laying robot+3D laser scanning is used to realize the precise processing and installation of aluminum plates, which ensures the construction quality of large-area special-shaped aluminum plate installations, and improves the progress and first pass rate of aluminum plate installation.

In order to solve the problems of the technologies described above, the technical scheme that the present invention takes is:

A construction method for a large-area special-shaped aluminum plate ceiling with an irregular arc structure, comprising the following steps:

S1. Physical measurement;

S2. BIM deepens the design, draws layout drawings, and draws aluminum plate processing drawings;

S3. Make a material processing plan;

S4. Construction of section steel transfer layer;

S5. Seismic isolation treatment in pipeline-intensive areas and below large equipment;

S6, primary and secondary keel positioning;

S7. Pipeline laying and initial installation of terminal equipment;

S8, aluminum plate installation;

S9, movable inspection port, equipment installation.

In the step S1, the measurement uses a three-dimensional scanner to scan the completed main body, masonry structure, and pipeline entities on site to collect three-dimensional data, and integrate the captured real data with the BIM model.

In step S2, import the integrated BIM model diagrams of various disciplines into the surveying and setting-out robot, and complete the measurement and design of the ceiling control line, side keel control line, boom position, and 0.5m elevation line in combination with the reference points copied and set. The control line is measured and set on the wall and the ground, and the control line of different special-shaped areas is released according to the main control line.

In step S2, draw the typesetting diagram: after the BIM model modeling is completed, the aluminum panels are partitioned and numbered, and the order of aluminum panel installation is specified during planning, and marked in the BIM model diagram and design drawings;

Draw aluminum plate processing diagrams: draw different aluminum plate processing drawings according to different regions and different plate shapes in the region, and draw out the drawings in sub-blocks to indicate the sequence of processing. In the drawings, the parts that should be surface aluminum plate processing need to be opened or opened The position of the aluminum plate, the form of opening and reinforcement of the aluminum plate, the data required for the size processing of the aluminum plate, and the error of the processing size is controlled within 0.5mm.

In step S3, in the BIM model, list the aluminum plate production materials that need to be processed, and indicate the relevant parameter information, to form an aluminum plate processing schedule, and organize them in the order of regional aluminum plate numbers;

Compile the material processing plan according to the numbering diagram of the aluminum plates, sort out the bill of lading, and the order of the aluminum plates in the bill of lading is consistent with the order of the on-site planned installation.

In step S4, when the suspended ceiling of the hollow floor slab and the length of the suspender are greater than 2500mm, a section steel transfer layer is set; the ceiling section steel transfer layer forms a well-shaped frame system, and the edge is 200mm away from the wall. Cover rib beam position setting.

In step S5, the distance between the suspenders exceeds the specification of 1200mm, and the distance between the partial position and the integrated support of the ceiling is close. The method of vibration isolation and shock absorption is adopted during construction, so that the safety of the ceiling will not be affected when the equipment vibrates. For this reason, square steel is used for this part There is a rubber shock-absorbing pad on the top for shock-absorbing, and micro-shock-absorbing devices are installed on the suspension rods on both sides.

In step S6, the primary and secondary keel positioning and installation include the following steps:

Step 1: Locate the position of the main keel suspender on the section steel conversion layer according to the design drawings, the length of the suspender is uniform, and adjust the nut on the hanger to realize the fine adjustment of the height of the suspender; set the shock absorber at the bottom of the hanger, the hanger, After the suspenders and shock absorbing devices are assembled, install the hooks on the section steel conversion layer, and then install the light steel main keel;

Step 2: After the main keel is installed in place, level the main keel according to the elevation line. For the overly long keel, in order to prevent the middle part from being bent and deformed and appear downward arc, do pre-arching treatment, and arch along the short span. Aluminum plate ceilings in irregular and special-shaped areas are not suitable for arching. Leveling is carried out according to the uniform elevation. A green light infrared level is installed at an appropriate position under the ceiling height, and the light steel main keel and nuts are adjusted to make the light steel main keel have the same elevation and be on a horizontal plane. , the exposed length of the suspender thread is not less than 3 complete threaded buttons; the lifting point at the end 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 of lifting points and the side wall should not be greater than 200mm; the secondary keel should be articulated The parts are connected with the main keel, the side keel is installed on the surrounding protection 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 S7, after the primary and secondary light steel keels are installed, the position of the terminal equipment is identified according to the BIM layout drawing, and the pipelines are laid in place and the connecting lines of the terminal equipment are thrown to the corresponding positions in advance.

In step S8, the installation of the suspended ceiling adopts the method of overall positioning + partition control, and the measurement and setting-out robot is used to cooperate with the measurement tools to complete the measurement and design of control lines and points, determine the sequence of construction, clarify internal control requirements, and avoid handover caused by independent positioning of each block The parts cannot be connected, resulting in a large deviation;

The centralized part of the block should be selected, and the special-shaped aluminum plate or the longest aluminum plate connected to each block should be selected as the initial section of the aluminum plate ceiling installation. Fixing parts are added to the position to ensure that the initial aluminum plate does not move left and right after positioning, and the aluminum plate in the middle area pulls the nylon line vertically and horizontally to form a cross-staggered control line;

Fix the main hollow of the starting aluminum plate ceiling: firmly fix the starting keel on the steel transfer layer bracket, adjust the nut on the hook to make it tight with the conversion layer bracket, and make oblique keels at the vertical and horizontal main keels. Reinforcement to ensure that the light steel main keel is fixed in place and does not move, and the fixing distance is not greater than 2m, so that it forms a firm keel skeleton;

Based on the firmly fixed keel of the starting plate, 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 it is aligned with the nylon line; after alignment, install the side keel; light steel Before the installation of the secondary keel, the position of the starting plate for the ceiling aluminum plate installation should be marked on the light steel main keel, and the starting plate should be fixed on the secondary keel with dovetail wires. The reference block is used to install other aluminum plates; the aluminum plates are installed at both ends in turn. During installation, the secondary keel is only needed to be hung on the main keel, and the hook-type aluminum plate is hung on the light steel secondary keel. Between the hook-type aluminum plate and the aluminum plate It is connected by clamping parts, and the gaps are sealed with anti-vibration glue;

When installing aluminum panels with openings such as lamp holes, fire sprinkler holes, air-conditioning outlets, and broadcasting, 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 cables, wires, signal lines, etc. are drawn out from the holes in the aluminum plate in time, and compared with the BIM drawings, to achieve precise lead out;

When the aluminum plate is installed, the zigzag keel is used to snap into the main keel, and the aluminum plate is fastened with clips to play the role of precise positioning and locking.

Compared with prior art, the beneficial effect that the present invention has is:

The construction method of large-area special-shaped aluminum plate ceiling with irregular arc structure proposed by the present invention solves the problem of poor comprehensive positioning accuracy of large-area ceiling and pipeline in complex space with special-shaped structure, and changes the method of installing aluminum plate starting from the middle position and one end of the structure. It realizes multi-point operation and overall assembly, reduces the time consumed for enlargement, alignment, and calibration of the ground and top surfaces, and solves the problems of large-area aluminum plates that are easy to shake, fall off, misplaced, and seams are not straight. Under dense pipelines and large equipment, square steel pipes, shrinkage damping strips, screws, and self-made shock absorbers are used to form ceiling brackets to reduce the impact of equipment on the ceiling and achieve the purpose of sound insulation and noise reduction. BIM + wire-releasing robot + 3D Laser scanning realizes precise processing and installation of aluminum plates, ensures the construction quality of large-area special-shaped aluminum plates, and improves the progress and first-time pass rate of aluminum plate installations.

This method uses a three-dimensional laser scanner to scan the on-site entity, uses BIM software to comprehensively arrange the aluminum plate ceiling with special-shaped structures, and defines the order of aluminum plate processing and installation in different areas, and numbers the aluminum plates to avoid confusion and affect the installation progress. The manufacturer conducts mass production according to the bill of materials, and makes batches by area during production; all terminal lamps, sprinklers, tuyere, inspection ports, etc. are all processed in the factory and reinforced. Adopting the construction method can improve the speed of processing and installation and the precision of on-site installation, shorten the construction period, and reduce the comprehensive construction cost.

In this method, the measurement robot is used to locate the aluminum plate ceilings in different structural shapes according to the BIM layout diagram. Each area uses nylon wires for detailed positioning, and the initial installation unit is fixed in the middle of the ceiling in each area, and on the side of the board. Set the clasp rings for the articulated boards and boards, and use special fasteners to realize simple connection between the two boards, realizing the purpose of installing the ceiling from the middle to the four sides of the hook-up aluminum board block with irregular arc structure; Methods BIM+ surveying and laying-out robot is used to locate the ceiling block as a whole, and the construction method is controlled by blocks. The vibration-absorbing and isolating device is installed at the connection part between the suspender and the main keel. The shock-absorbing closure technology installs the hook-up aluminum plate, which has the advantages of fast construction speed, high construction precision, fast inter-professional cooperation, high operational safety, etc., and can achieve the goal of a sub-project to be completed at one time.

This method is suitable for the construction of aluminum plate ceilings, especially the installation advantages of special-shaped large-space hook-up aluminum plate ceilings are obvious; this construction method can effectively control the quality of aluminum plate construction and installation, and fully consider the impact of equipment vibration on aluminum plates and their keels. The seismic isolation design and construction quality meet the requirements of the code, and the optimized design using BIM technology enables the terminal equipment to be lined up, reaching the standard of excellence; good results have been achieved in terms of quality, safety, progress, and environmental protection. It has high use and promotion value.

Description of drawings

Fig. 1 is a process flow diagram of the present invention;

Figure 2 is a schematic diagram of a hook-up aluminum ceiling;

Figure 3 is an enlarged view of A in Figure 2;

Fig. 4 is a schematic diagram of a miniature damping device in the present invention;

Figure 5 is a schematic diagram of the pipeline-intensive area, the ceiling keel under the large equipment, and the shock-absorbing and isolating device;

Figure 6 is a schematic diagram of shock absorption under large equipment.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways than this description. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below. limits.

As shown in Figures 1 to 5, the construction method of large-area special-shaped aluminum plate ceilings with irregular arc structures includes transfer layer supports, and ceiling suspenders are installed under the supports, and the ceiling suspenders are equipped with space-reducing parts where pipelines are densely populated and large equipment. The bottom end of the shock absorbing and isolating device is a square steel, and the rubber shock absorbing pad is bonded to the square steel. A miniature shock absorbing device composed of rubber rings, gaskets, nuts, and U-shaped pendants is installed on the boom. The shock absorbing device is connected with the U-shaped light steel main keel, the light steel main keel and the secondary keel are connected by hooks, the hook plate is hung on the secondary keel, and the gap between the plates is sealed with shockproof glue.

The construction method includes the following steps:

physical measurement;

BIM deepens the design, draws layout drawings, and draws aluminum plate processing drawings;

Make material processing plan;

Steel transfer layer construction;

Seismic isolation treatment in pipeline-intensive areas and under large equipment;

Primary and secondary keel positioning;

Pipeline laying and initial installation of terminal equipment;

Aluminum plate installation;

Movable inspection port, equipment installation.

Preferably, said entity measurement comprises the following steps:

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.

BIM in-depth design: master the parameters such as material, color, and grid reflected in the design drawings, and fully understand the design intent. And inspect the equipment and products of the aluminum plate manufacturers to be selected. On the real BIM model drawing, in accordance with the professional construction drawings of each equipment and combined with the professional needs of lighting, ventilation and air conditioning, weak current, fire protection, signal, etc., rationally optimize the terminals such as air outlets, lighting fixtures, fire protection and weak current broadcasting, spraying, smoke detectors, and inspection ports The location of the equipment, under the premise of conforming to the standard spacing and lighting brightness, should be 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 arrangement of air outlets, lamps, sprinklers, inspection holes, monitoring, lifting projectors and other equipment and facilities of the air conditioning and ventilation system, and it is not suitable to cut off the main keel.

Model output and measurement and setting out: import the integrated BIM model drawings of various disciplines into the measuring and setting out robot, and complete the measurement and design of the ceiling control line, side keel control line, boom position, and 0.5m elevation line in combination with the reference points copied and set . The control line of the ceiling should be measured and set on the wall and the ground, and the control line of different special-shaped areas should be measured and set according to the main control line.

Draw the typesetting diagram: After the BIM model modeling is completed, the aluminum panels should be partitioned and numbered. When planning, the order of aluminum panel installation should be clarified and marked in the BIM model diagram and design drawings.

Draw aluminum plate processing diagrams: draw different aluminum plate processing drawings according to different regions and different plate shapes in the region, and draw out the drawings in sub-blocks to indicate the sequence of processing. In the drawings, the parts that should be surface aluminum plate processing need to be opened or opened The position of the aluminum plate, the form of reinforcement of the opening of the aluminum plate, the size of the aluminum plate and other data required for processing, the error of the processing size is controlled within 0.5mm.

In the BIM model, the processing list of the aluminum plate production materials that need to be processed is made, and the relevant parameter information is indicated to form the aluminum plate processing schedule. It should be sorted according to the order of regional aluminum plate numbers,

Compile the material processing plan according to the numbering diagram of the aluminum plates, sort out the bill of lading, and the order of the aluminum plates in the bill of lading should be consistent with the order of the on-site planned installation.

Construction of section steel transfer floor: for the ceiling of hollow floor slabs and the length of suspenders greater than 2500mm, a section steel transfer floor should be set. The steel transfer floor of the suspended ceiling should form a well-shaped frame system, and the edge should be set with an angle steel frame 200mm away from the wall.

Seismic isolation treatment in areas with dense pipelines and under large-scale equipment; the distance between suspenders in this part exceeds the specification of 1200mm, and the distance between the partial position and the integrated support of the ceiling is relatively close. Safety, for this reason, this part adopts rubber damping pads on the square steel for shock absorption, and a miniature damping device composed of rubber rings, gaskets, nuts, and U-shaped pendants is set on the suspenders on both sides.

Primary and secondary keel positioning and installation include the following steps:

Step 1: Locate the position of the main keel suspender on the section steel conversion layer according to the design drawings, the length of the suspender is uniform, adjust the nut on the hook to realize the fine adjustment of the height of the suspender; install a shock absorber at the bottom of the hanger, and the shock absorber consists of Composed of U-shaped parts, springs, flat steel plates, rubber rings, gaskets, bolts, etc. After the hooks, hangers, and shock absorbers are assembled, install the hooks on the section steel conversion layer, and then install the light steel main keel.

Step 2: After the main keel is installed in place, the main keel should be leveled according to the elevation line. For the overly long keel, in order to prevent the middle part from being bent and deformed and appear downward arc, do pre-arching treatment, and arch along the short span. For the aluminum plate ceiling in the irregular and special-shaped area, it is not suitable to arch, and it should be leveled according to the uniform elevation. Set up a green light infrared level at an appropriate position under the height of the ceiling, and adjust the light steel main keel and nuts to make the light steel main keel consistent. On a horizontal plane, the exposed length of the suspender thread should not be less than 3 complete threads; the lifting point at the end 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 of lifting points and the side wall should not be greater than 200mm. The secondary keel is connected with the main keel by hooks, and the side keel is installed on the surrounding protection structure of the room. The lower edge is flush with the standard line, and fixed by expansion bolts. The spacing should not be greater than 500mm, and the end should not be greater than 50mm.

Pipeline laying and terminal equipment in place: After the primary and secondary light steel keels are installed, find out the position of the terminal equipment according to the BIM layout drawing, and pre-lay the pipelines in place and throw the connecting lines of the terminal equipment to the corresponding positions.

The installation of suspended ceiling aluminum plate includes the following steps:

The installation of the suspended ceiling adopts the method of overall positioning + partition control. The measurement and setting-out robot is used to cooperate with the measurement tools to complete the measurement and design of control lines and points. It is necessary to determine the sequence of construction, clarify internal control requirements, and avoid independent positioning of each block. The handover parts cannot be connected , resulting in a large deviation.

The relatively concentrated part of the block should be selected, and the special-shaped aluminum plate or the longest aluminum plate connected to each block should be selected as the initial section of the aluminum plate ceiling installation, and the edge line of the initial aluminum plate installation should be determined according to the general control line and the block control line. Fixing parts are added to the side or middle part to ensure that the initial aluminum plate does not move left and right after positioning. The aluminum plate in the middle area pulls the nylon wire vertically and horizontally to form a criss-cross control line. The nylon wire is not easy to be too long, and deformation and downward bending will occur if it is too long .

Fix the main hollow of the starting aluminum plate ceiling: the starting keel should be firmly fixed on the steel transfer layer bracket, adjust the nut on the hook to make it tight with the conversion layer bracket, and make oblique keels at the vertical and horizontal main keels Reinforce to ensure that the light steel main keel is fixed in place and does not move, and the fixing distance is not greater than 2m, so that it forms a strong keel skeleton.

Based on the firmly fixed keel of the starting plate, 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 it is aligned with the nylon line; after alignment, install the side keel; light steel Before the installation of the secondary keel, the position of the starting plate for the ceiling aluminum plate installation should be marked on the light steel main keel, and the starting plate should be fixed on the secondary keel with dovetail wires. The reference block is used for the installation of 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. The hook-up aluminum plate is hung on the light steel secondary keel. The hook-up aluminum plate and the aluminum plate are connected by clips. Closure shockproof glue seal.

When installing aluminum panels with openings such as lamp holes, fire sprinkler holes, air-conditioning outlets, and broadcasting, 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 cables, electric wires, signal lines, etc. are led out from the holes in the aluminum plate in time, and are accurately drawn out according to the BIM drawings.

When the aluminum plate is installed, the zigzag keel is used to snap into the main keel, and the aluminum plate is fastened with clips to play the role of precise positioning and locking.

Only the preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various modifications can also be made without departing from the gist of the present invention. Various changes should be included within the protection scope of the present invention.

Claims (10)

1. The construction method of the irregular arc-shaped structure large-area special-shaped aluminum plate ceiling is characterized by comprising the following steps of:

s1, measuring an entity;

s2, carrying out BIM deepening design, drawing a layout drawing, and drawing an aluminum plate machining drawing;

s3, making a material processing plan;

s4, construction of a section steel transfer layer;

s5, performing shock insulation treatment on the pipeline dense area and the lower part of the large equipment;

s6, positioning the primary keel and the secondary keel;

s7, laying a pipeline and initially positioning tail-end equipment;

s8, mounting an aluminum plate;

s9, installing equipment at a movable access hole.

2. The construction method of the irregular arc-shaped large-area special-shaped aluminum plate ceiling is characterized in that: in the step S1, a three-dimensional scanner is adopted for scanning the body, masonry structure and pipeline entity which are finished on site, three-dimensional data acquisition is carried out, and captured real data are integrated with a BIM model.

3. The construction method of the irregular arc-shaped large-area special-shaped aluminum plate ceiling is characterized in that: and S2, importing the BIM model diagrams integrated with each specialty into a measurement and setting-out robot, and completing measurement and setting of a ceiling control line, a side keel control line, a suspender position and a 0.5m mark line by combining the recorded datum points, wherein the ceiling control line is measured and set on the wall and the ground, and the measurement and setting of different special-shaped area control lines are released according to the main control line.

4. The construction method of the irregular arc-shaped large-area special-shaped aluminum plate ceiling is characterized in that: in step S2, drawing a layout: after the BIM model is modeled, the aluminum plates are numbered in a partitioning and partitioning mode, the installation sequence of the aluminum plates is determined during planning, and the installation sequence is marked in a BIM model drawing and a design drawing;

drawing an aluminum plate machining picture: according to different regions, different aluminum plate processing drawings are respectively drawn according to different plate shapes in the regions, the drawings are drawn in blocks, the processing sequence is indicated, the positions of the aluminum plate to be processed on the surface in the drawings need to be punched or holed, the aluminum plate is punched and reinforced, the data required by the size processing of the aluminum plate is controlled within 0.5mm, and the processing size error is controlled.

5. The construction method of the irregular arc-shaped large-area special-shaped aluminum plate ceiling is characterized in that: step S3, in the BIM model, an aluminum plate production material processing list needing to be processed is processed, relevant parameter information is noted, an aluminum plate processing schedule is formed, and the aluminum plate processing schedule is arranged according to the number sequence of the regional aluminum plates;

and compiling a material processing plan according to the number drawing of the hooked aluminum plate blocks, arranging a material lifting list, wherein the sequence of the aluminum plates in the material lifting list is consistent with the sequence of the field planned installation.

6. The construction method of the irregular arc-shaped large-area special-shaped aluminum plate ceiling is characterized in that: step S4, setting a section steel conversion layer when the suspended ceiling and the hanger rod of the hollow floor slab are longer than 2500 mm; the suspended ceiling profile steel conversion layer forms a # -shaped frame system, the edge of the suspended ceiling profile steel conversion layer is 200mm away from a wall to form an angle steel frame, and the arrangement of longitudinal and transverse keels of the conversion layer is arranged according to the rib beam position of the hollow floor slab.

7. The construction method of the irregular arc-shaped large-area special-shaped aluminum plate ceiling is characterized in that: in the step S5, the distance between the hanging rods at the positions exceeds the standard 1200mm, the distance between the local positions and the comprehensive support of the suspended ceiling is short, a shock isolation and damping method is adopted during construction, the safety of the suspended ceiling cannot be influenced when the equipment operates and vibrates, therefore, the positions adopt square steel to be provided with rubber shock absorption pads for shock absorption, and the hanging rods at two sides are provided with miniature shock absorption devices.

8. The construction method of the irregular arc-shaped large-area special-shaped aluminum plate ceiling as claimed in claim 1, wherein the construction method comprises the following steps: in the step S6, the positioning and the installation of the primary keel and the secondary keel comprise the following steps:

the method comprises the following steps: positioning the position of a main keel suspender on the section steel conversion layer according to a design drawing, wherein the lengths of the suspenders are uniform, and fine adjustment of the height of the suspender is realized by adjusting a nut on the hanging piece; the bottom of the hanging rib is provided with a damping device, after the hanging piece, the hanging rod and the damping device are assembled, the hanging piece is installed on the section steel conversion layer, and then the light steel main keel is installed;

step two: leveling the main keel according to the elevation line after the main keel is installed in place, pre-arching the overlong keel to prevent the middle part from bending and deforming to form a downward arc, arching along the short span, and performing leveling treatment according to the uniform elevation, erecting a green infrared level gauge at a proper position below the height of the suspended ceiling, adjusting the light steel main keel and a nut to ensure that the light steel main keel has consistent elevation and is positioned on a horizontal plane, and the exposed length of the screw thread of a suspender is not less than 3 complete screw threads; the distance between the end lifting points of the light steel main keel and the edge of the main keel is not more than 300mm, and the distance between the end row lifting points and the side wall is not more than 200mm; the secondary keel is connected with the main keel through hanging pieces, the side keel is installed on a surrounding structure around a room, the lower edge of the side keel is flush with a standard line, expansion bolts and the like are selected for fixing, the distance is not more than 500mm, and the end is not more than 50mm.

9. The construction method of the irregular arc-shaped large-area special-shaped aluminum plate ceiling is characterized in that: in step S7, after the primary and secondary light steel keels are installed, the position of the tail end equipment is found accurately according to the BIM typesetting drawing, the pipeline is arranged in place in advance, and the connecting line of the tail end equipment is thrown to the corresponding position.

10. The construction method of the irregular arc-shaped large-area special-shaped aluminum plate ceiling is characterized in that: in the step S8, the suspended ceiling installation adopts a method of integral positioning and partition control, a measuring paying-off robot is adopted to match with a measuring tool to complete the measurement and the setting of a control line and a point position, the construction sequence is determined, the internal control requirement is clarified, and the problem that the joint parts cannot be connected and generate larger deviation due to the independent positioning of each block is avoided;

the method comprises the following steps that a block concentrated part is selected, a special-shaped aluminum plate or the longest aluminum plate communicated with each block is selected as an initial section for installing the aluminum plate ceiling, the side line for installing the initial aluminum plate is determined according to a total control line and a block control line, fixing parts are additionally arranged on two sides or the middle part to ensure that the initial aluminum plate does not move left and right after being positioned, and nylon wires are pulled longitudinally and transversely by aluminum plates in the middle area to form crisscross control lines;

the initial aluminum plate ceiling main hollow drum is fixed: the initial keel is firmly fixed on the section steel conversion layer support, nuts on the hanging pieces are adjusted to enable the initial keel to be tightly propped against the conversion layer support, and the inclined keels are arranged at the longitudinal and transverse main keels for reinforcement, so that the light steel main keels are fixed in place and do not move, the fixed distance is not more than 2m, and a firm keel framework is formed;

sequentially installing other main light steel keels by taking the keel fixedly and firmly fixed by the starting plate as a reference, installing 5-6 main light steel keels longitudinally and transversely, and checking by contrasting the positioning line to see whether the main light steel keels are aligned with the nylon line or not; after alignment, installing the side keels; before the light steel secondary keel is installed, marking the position of a ceiling aluminum plate installation starting plate on the light steel primary keel, fixing the starting plate on the secondary keel by adopting a dovetail wire, forming an initial aluminum plate installation unit after the initial aluminum plate installation unit is adjusted in place, and installing other aluminum plates by taking the initial aluminum plate installation unit as a reference block; the aluminum plates are sequentially installed at two ends, the secondary keel is only required to be hung on the main keel during installation, the lapping type aluminum plate is hung on the light steel secondary keel, the lapping type aluminum plate and the aluminum plate are connected through the clamping piece, and the gaps are sealed by the sealing shockproof glue;

when an aluminum plate with openings such as lamp holes, fire-fighting spray holes, air conditioner air outlets and broadcasting is installed, related professionals are required to be matched with ceiling operators to fix terminal equipment in place in time, if the equipment cannot be fixed in time, power lines, network cables, electric wires, signal lines and the like are required to be led out from the holes of the aluminum plate in time, and BIM drawings are compared to realize accurate leading-out;

the aluminum plate adopts the font fossil fragments card to go into on the main joist during the installation, adopts joint spare fastening between aluminum plate and the aluminum plate, plays the effect of accurate location and locking.

Images