A large-span hyperbolic wavy aluminum plate precise positioning ceiling and construction method

Abstract

The present invention discloses a large-span hyperbolic wavy aluminum plate precision-positioned ceiling and a construction method, comprising a main structure, a plurality of structural beams arranged on the top of the main structure, a main keel fixedly installed at the bottom of the plurality of structural beams, an externally cantilevered steel frame cantilevered and installed on one side of the top of the main structure, the externally cantilevered steel frame and the main keel forming a ceiling installation base, a ceiling structure and a light strip structure suspended at the lower part of the ceiling installation base, the light strip structure being arranged throughout the ceiling structure; the ceiling structure comprising a plurality of curved steel sheets and a plurality of curved plates, the curved steel sheets being suspended under the main keel through a plurality of ceiling adapters of different heights. The ceiling has a complex and unique shape and has a good decorative effect. In the specific construction, a large-span hyperbolic wavy aluminum plate precision-positioned ceiling is modeled based on BIM, the construction steps are determined according to the modeling effect, and the complex-shaped ceiling is presented with high precision in the actual building, with high construction precision and reduced construction difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a large-span hyperbolic wavy aluminum plate precisely positioned suspended ceiling and a construction method thereof. Background Art

[0002] As a crucial component of a building's structure, suspended ceilings not only provide insulation, heat insulation, sound insulation, and concealment of electrical and fire protection equipment, but also serve a decorative purpose. They are a primary focus of interior design and crucial for enhancing a building's sense of sophistication and character. However, while architects can easily create complex shapes for large-span suspended ceilings using existing modeling software, truly implementing these complex shapes, especially those with curved surfaces, into actual buildings is far more challenging. In practice, the primary challenge is fabricating these complex shapes, which requires careful consideration of existing equipment, processing technology, transportation, and installation feasibility. Secondly, there is the question of whether the suspended ceiling will deform over time between fabrication and installation, potentially compromising precision and increasing the complexity of construction. Finally, there is the question of how to seamlessly translate the complex shapes modeled during the design phase into the actual building, ensuring they retain their aesthetic quality and minimize operational complexity. Summary of the Invention

[0003] The purpose of the present invention is to provide a large-span hyperbolic wavy aluminum plate precisely positioned ceiling and a construction method. The ceiling has a complex and unique shape and has a good decorative effect. In the specific construction, the large-span hyperbolic wavy aluminum plate precisely positioned ceiling is modeled based on BIM, and the construction steps are determined according to the modeling effect. The complex-shaped ceiling is presented with high precision in the actual building to simplify the construction difficulty.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A large-span hyperbolic wavy aluminum plate precision positioning ceiling includes a main structure, multiple structural beams are arranged on the top of the main structure, main keels are fixedly installed at the bottom of the multiple structural beams, and a cantilevered steel frame is cantilevered and installed on one side of the top of the main structure. The cantilevered steel frame and the main keel constitute the ceiling installation foundation. The ceiling installation foundation has the ceiling structure and a light strip structure suspended below it, and the light strip structure is arranged throughout the ceiling structure.

[0006] The ceiling structure includes several curved steel sheets and multiple curved plates. The curved steel sheets are hoisted under the main keel through multiple ceiling adapters of different heights. At least two curved plates are fixedly installed under the curved steel sheets. The curved plates installed on different curved steel sheets are spliced together.

[0007] The light strip structure includes several light strip fixing plates and multiple light strips. The light strip fixing plates are fixedly installed under the main keel through light strip adapters. The light strip fixing plates are fixedly installed with light strips. The light strip fixing plates and the multiple curved plates are spliced to form a ceiling surface.

[0008] The light strip fixing plate divides the ceiling surface into several areas, each area presents a concave structure, and the light strip fixing plates are arranged at both ends of the bottom of the concave structure and pass through the entire ceiling surface.

[0009] Preferably, the main keel includes a plurality of cross beams, which are evenly spaced and fixedly installed at the bottom of the structural beam through embedded parts to form a horizontal and vertical cross structure with multiple structural beams, and a plurality of embedded parts are embedded at the bottom of the structural beam.

[0010] Preferably, a plurality of arc-shaped steel sheets are fixedly installed under each crossbeam through a ceiling adapter, a light strip fixing plate is provided at the joint of two adjacent arc-shaped steel sheets, and at least two curved plates are fixedly installed under each arc-shaped steel sheet through an L-shaped angle piece, the curved plates are provided with folded edges around them, and reinforcing ribs are provided on the curved plates.

[0011] Preferably, the cantilevered steel frame includes several tripods, the tops of the several tripods are connected into a whole by a connecting frame, the sides of the tripods are fixedly mounted on a structural beam arranged on one side of the top of the main structure, a plurality of embedded parts are embedded in the side of the structural beam, and the sides of the tripods are fixedly connected to the embedded parts.

[0012] Preferably, the connecting frame is a rectangular frame structure, the extended side of the tripod hypotenuse is fixed on the connecting cross bar, one side of the tripod is connected to one end of the connecting cross bar through a connecting longitudinal bar, and both ends of the connecting cross bar are fixedly connected in the rectangular frame structure.

[0013] Preferably, the ceiling adapter is a rod-shaped structure made of channel steel or I-beam, the upper end of the ceiling adapter is suspended at the bottom of the beam, and the lower end of the ceiling adapter is fixedly connected to the arc-shaped steel sheet.

[0014] Preferably, the light strip adapter is a rod-shaped structure made of channel steel or I-beam, the upper end of the light strip adapter is suspended at the bottom of the beam, the lower end of the light strip adapter is fixedly connected to the light strip fixing plate through an L-shaped angle piece, and the height of the light strip adapter is adapted to the arc-shaped steel sheet.

[0015] Preferably, the light strip fixing plate is a long plate-shaped structure with a certain curvature and adapted to the curved plate, and both sides of the light strip fixing plate are spliced with the curved plate.

[0016] Preferably, a fireproof and heat-insulating layer is provided on the top of the main structure, and a plurality of the structural beams are covered in the fireproof and heat-insulating layer.

[0017] A construction method for accurately positioning a large-span hyperbolic wavy aluminum plate ceiling comprises the following steps:

[0018] Step 1: Deepen the 3D model and use a total station to verify the structural dimensions of the main structure and the position information of each embedded part embedded in the main structure, that is, the coordinate points. Import the coordinate points of each embedded part into the completed 3D model of the main structure.

[0019] Step 2: Create a BIM model of the large-span hyperbolic wavy aluminum plate precisely positioned ceiling. Import the main structure 3D model into Rhino to create a BIM model of the large-span hyperbolic wavy aluminum plate precisely positioned ceiling. The model includes the ceiling installation foundation, ceiling structure and light strip structure.

[0020] Step three, divide the large-span hyperbolic wavy aluminum plate to accurately position the ceiling and determine the height of each lifting point. In the BIM model of the large-span hyperbolic wavy aluminum plate to accurately position the ceiling, first determine the position of the light strip structure, divide multiple light strip fixing plates on the ceiling surface, split the model of each light strip fixing plate and export the CAD lofting expansion drawing, mark the dimensions in detail in the CAD lofting expansion drawing, and number them one by one; determine the hanging point of the light strip structure, determine the height of the light strip adapter at the hanging point and export the CAD drawing, mark the dimensions in detail in the CAD drawing, and number them one by one; divide the ceiling surface between adjacent light strip structures into multiple small areas, each small area is a curved plate, split the model of each curved plate and export the CAD lofting expansion drawing, mark the dimensions in detail in the CAD lofting expansion drawing, and number them one by one; according to the position information of the curved plate at the hanging position, determine the height of the ceiling adapter at the hanging position and the shape and size of the arc-shaped steel sheet and export the CAD drawing, mark the dimensions in detail in the CAD drawing, and number them one by one;

[0021] Step 4: Make each component. Cut and manufacture each component in sequence according to the CAD drawing, and mark the corresponding number on each component in time. Perform sheet metal processing on the curved plate and the light strip fixing plate, and finally spray the surface.

[0022] Step 5: Build the foundation for the suspended ceiling installation, recheck the structural dimensions of the main structure and the position information of the embedded parts embedded in the main structure; build the main keel, install the cantilevered steel frame, and lay and install the fireproof insulation layer to complete the construction of the suspended ceiling installation foundation;

[0023] Step six, construct the ceiling surface, install the light strip adapter and the ceiling adapter in sequence at the corresponding light strip structure design position on the main keel in the order of number; then install the curved steel sheets in sequence in the order of number; fix the light strip fixing plates under the light strip adapter in sequence in the order of number; assemble the curved plates in each area of the ceiling surface based on the light strip fixing plates. The general assembly principle is to assemble from the side with the smaller distance between two adjacent light strip fixing plates, that is, the smaller span, to the side with the larger distance between them, that is, the larger span. Use U-supports and square wood to lift the curved plates to adjust the deformation of the curved plates and improve the assembly accuracy. Finally, clean the joints, fill the joints and apply glue.

[0024] In the present invention, based on BIM modeling, the light strip structure is used to accurately position the large-span hyperbolic wavy aluminum plate to divide the ceiling area, and specifically divide it into several curved plates. Reinforcement ribs are set on the curved plates, and folding edges are set around the curved plates to increase the rigidity and strength of the single curved plate and prevent deformation over time. The light strip structure not only has the functions of lighting and decoration, but also serves as a benchmark for the installation of the curved plates during construction, thereby improving the construction accuracy. The ceiling adapter and the light strip adapter not only play the role of hanging, but also serve as the overall positioning basis for the accurate positioning of the large-span hyperbolic wavy aluminum plate ceiling construction. The ceiling adapter and the light strip adapter at each hanging point are accurately determined in the BIM model. The height of the components can improve the accuracy of subsequent construction; the curved steel sheets serve as fixing points for each curved plate, which simplifies the construction process of accurately positioning the large-span hyperbolic wavy aluminum plate ceiling and reduces the construction difficulty. During the specific construction, it is only necessary to assemble the various curved plates on the curved steel sheets; during construction, the curved plates are assembled in the direction from small span to large span in each divided area. The entire construction process is carried out in an orderly manner, saving construction period. The curved plates assembled in easy-to-assemble positions serve as the basis for subsequent curved plate assembly, which improves construction accuracy and reduces construction difficulty. During the construction process, U-supports and square wood jacking are set under the curved plates to adjust the deformation of the curved plates and improve assembly accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the cantilevered steel frame structure of the present invention;

[0027] Figure 3 It is a partial structural diagram of the present invention;

[0028] Figure 4 It is a schematic diagram of another part of the structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the area division of the ceiling surface of the present invention;

[0030] Figure 6 This is a schematic diagram of the main keel structure of the present invention;

[0031] Figure 7 It is a construction schematic diagram of the present invention.

[0032] In the figure: 1. Structural beam; 2. Main keel; 3. Cantilevered steel frame; 4. Ceiling structure; 5. Light strip structure; 6. Fireproof insulation layer; 7. U-bracket; 8. Square wood; 20. Crossbeam; 30. Tripod; 31. Connecting frame; 32. Connecting crossbar; 40. Curved steel sheet; 41. Ceiling adapter; 42. Curved plate; 50. Light strip fixing plate; 51. Light strip adapter. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings:

[0034] like Figure 1 The large-span, hyperbolic, wavy aluminum plate precision-positioned ceiling shown in the figure comprises a main structure topped by multiple structural beams 1. These beams are secured with a fireproof insulation layer 6 using plastic expansion bolts. The beams 1 are encased in this insulation layer, which can be made of 120mm thick rock wool. A main keel 2 is fixed to the bottom of the beams 1. A cantilevered steel frame 3 is cantilevered to one side of the main structure's top. The cantilevered steel frame 3 and the main keel 2 form the ceiling's mounting base, which is either a flat or skewed structure. A ceiling structure 4 and a light strip 5 are suspended from the base, extending throughout the structure.

[0035] The main keel 2 includes several cross beams 20. In this example, the cross beams are made of square steel tubes. Several cross beams 20 are evenly spaced and fixedly installed at the bottom of the structural beam 1 through embedded parts, forming a horizontal and vertical cross structure with multiple structural beams 1. Several embedded parts are embedded in the bottom of the structural beam 1, and the cross beams 20 are connected to the embedded parts through fasteners.

[0036] The cantilevered steel frame 3 includes several tripods 30, which are connected to form a whole by welding at the top through a connecting frame 31. The sides of the tripods 30 are fixedly mounted on the structural beam 1 set on the top side of the main structure. The side of the structural beam 1 is pre-embedded with multiple embedded parts. The sides of the tripods 30 are fixedly connected to the embedded parts by fasteners. The connecting frame 31 is a rectangular frame structure, such as Figure 2 As shown, the extended side of the hypotenuse of the tripod 30 is fixed on the connecting crossbar 32 by welding, and one side of the tripod 30 is connected to one end of the connecting crossbar 32 through a connecting longitudinal rod by welding, and both ends of the connecting crossbar 32 are fixedly connected in the rectangular frame structure.

[0037] The ceiling structure 4 includes several curved steel sheets 40 and multiple curved plates 42. The curved steel sheets 40 are suspended below the main keel 2 via multiple ceiling adapters 41 of varying heights. At least two curved plates 42 are fixedly mounted below the curved steel sheets 40. The curved plates 42 mounted on different curved steel sheets 40 are spliced together. In this example, to ensure the regularity of the long-span hyperbolic wavy aluminum sheet after precise positioning of the ceiling, two curved plates 42 are fixedly mounted below each curved steel sheet 40. The ceiling adapters 41 are rod-shaped structures made of channel steel or I-beams. The upper end of the ceiling adapters 41 is suspended from the bottom of the crossbeam 20, and the lower end of the ceiling adapters 41 is fixedly connected to the curved steel sheets 40. A plurality of curved steel sheets 40 are fixedly installed under each crossbeam 20 through a ceiling adapter 41. A light strip fixing plate 50 is provided at the joint of two adjacent curved steel sheets 40. At least two curved plates 42 are fixedly installed under each curved steel sheet 40 through an L-shaped angle piece. The curved plates 42 are provided with folded edges around them and reinforced ribs on them. The folded edges and reinforced ribs increase the rigidity and strength of the single curved plate 42 to prevent deformation over time. In this example, see Figure 3 The folded edge of the curved plate 42 is fixedly connected to the L-shaped corner piece by fasteners. In order to ensure the beauty of the splicing, two adjacent curved plates 42 can be fixedly connected at the same position by the same fasteners, and the L-shaped corner piece and the arc-shaped steel sheet 40 are connected by welding or fasteners.

[0038] like Figure 4 As shown, the light strip structure 5 includes several light strip fixing plates 50 and multiple light strips. The light strip fixing plates 50 are fixedly installed under the main keel 2 through the light strip adapter 51. The light strips are fixedly installed on the light strip fixing plates 50. The light strip fixing plates 50 and the multiple curved plates 42 are spliced together to form a ceiling surface. Figure 5 The light strip fixing plate 50 divides the ceiling surface into several areas, each of which is a concave structure. The light strip fixing plate 50 is arranged at both ends of the bottom of the concave structure and runs through the entire ceiling surface. The light strip structure 5 not only has the function of lighting and decoration, but also serves as a reference for the installation of the curved plate during construction, thereby improving the construction accuracy. The light strip adapter 51 is a rod-shaped structure made of channel steel or I-steel. The upper end of the light strip adapter 51 is suspended at the bottom of the beam 20, and the lower end of the light strip adapter 51 is fixedly connected to the light strip fixing plate 50 through an L-shaped angle piece. The L-shaped angle piece can be fixed to the light strip adapter 51 and the light strip fixing plate 50 through fasteners. The height of the light strip adapter 51 is adapted to the arc-shaped steel sheet 40. The light strip fixing plate 50 is a long plate-shaped structure with a certain curvature that is adapted to the curved plate 42. The two sides of the light strip fixing plate 50 are spliced with the curved plate 42.

[0039] A construction method for accurately positioning a large-span hyperbolic wavy aluminum plate ceiling comprises the following steps:

[0040] Step 1: Deepen the 3D model and use a total station to verify the structural dimensions of the main structure and the position information of each embedded part embedded in the main structure, that is, the coordinate points. Import the coordinate points of each embedded part into the completed 3D model of the main structure.

[0041] Step 2: Create a BIM model of the large-span hyperbolic wavy aluminum plate precisely positioned ceiling. Import the main structure 3D model into Rhino to create a BIM model of the large-span hyperbolic wavy aluminum plate precisely positioned ceiling. The model includes the ceiling installation foundation, ceiling structure 4 and light strip structure 5.

[0042] Step 3: Divide the large-span hyperbolic wavy aluminum plate to accurately position the ceiling and determine the height of each hanging point. In the BIM model of the large-span hyperbolic wavy aluminum plate to accurately position the ceiling, first determine the position of the light strip structure 5, divide multiple light strip fixing plates 50 on the ceiling surface, split the model of each light strip fixing plate 50 and export the CAD lofting expansion drawing, mark the dimensions in detail in the CAD lofting expansion drawing, and number them one by one; determine the hanging point of the light strip structure 5, determine the height of the light strip adapter 51 at the hanging point and export the CAD drawing, and then add the CAD drawing to the CA Detailed dimensions are marked in the D drawing and numbered one by one; the ceiling surface between the adjacent light strip structures 5 is divided into multiple small areas, each small area is a curved plate 42, the model of each curved plate 42 is split and a CAD lofting expansion drawing is exported, and the dimensions are marked in detail in the CAD lofting expansion drawing and numbered one by one; based on the position information of the curved plate 42 at the hanging position, the height of the ceiling adapter 41 at the hanging position and the shape and size of the curved steel sheet 40 are determined, and a CAD drawing is exported, and the dimensions are marked in detail in the CAD drawing and numbered one by one;

[0043] Step 4: Make each component. Import the CAD drawing into large-scale processing machines such as CNC milling machines, fully automatic turret punching machines, and laser cutting machines in sequence. Cut and manufacture each component, and mark the corresponding number on each component in time. Perform sheet metal processing on the curved plate 42 and the light strip fixing plate 50. Auxiliary processing methods such as welding or bending can be used. Finally, the surface is sprayed.

[0044] Step 5: Build the foundation for the ceiling installation, and double-check the structural dimensions of the main structure and the position information of the embedded parts embedded in the main structure; install the cross beams 20 evenly and fixedly in the embedded parts embedded in the bottom of the structural beams 1, forming a main keel 2 that crosses horizontally and vertically with multiple structural beams 1. Figure 6 ; The cantilevered steel frame 3 is installed on the side of the structural beam 1 provided on one side of the top of the main structure, and then the fireproof insulation layer 6 is laid and installed to complete the construction of the ceiling installation foundation;

[0045] Step six, construct the ceiling surface, install the light strip adapter 51 and the ceiling adapter 41 in sequence at the design position of the corresponding light strip structure 5 on the main keel 2 according to the numbering sequence; then install the curved steel sheet 40 in sequence according to the numbering sequence; fix the fireproof insulation layer under the curved steel sheet 40 with expansion bolts; fix the light strip fixing plate 50 in sequence under the light strip adapter 51 with L-shaped angle pieces according to the numbering sequence; assemble the curved plates 42 in each area of the ceiling surface with the light strip fixing plate 50 as the reference. The general assembly principle is that in each area, the side with the smaller spacing, i.e., the smaller span, of the adjacent light strip fixing plates 50 is assembled to the side with the larger spacing, i.e., the larger span, such as Figure 7 As shown, when the distance between two adjacent light strip fixing plates is large, U-supports 7 and square wood 8 are used to lift the curved plate 42 to adjust the deformation of the curved plate 42 to ensure that it can be accurately installed according to the design. During the construction process, in order to control the width between adjacent curved plates, wooden wedges can be temporarily fixed and removed after the ceiling construction is completed. Finally, the joints are cleaned, filled and glued.

[0046] The above embodiments are merely some explanations of the concept and implementation of the present invention, and are not intended to limit the same. Under the concept of the present invention, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A construction method for accurately positioning a large-span hyperbolic corrugated aluminum plate ceiling, comprising a main structure, a plurality of structural beams (1) arranged on the top of the main structure, characterized in that: A main keel (2) is fixedly installed at the bottom of a plurality of structural beams (1); an externally cantilevered steel frame (3) is cantilevered and installed on one side of the top of the main structure; the externally cantilevered steel frame (3) and the main keel (2) constitute a suspended ceiling installation foundation; a suspended ceiling structure (4) and a light strip structure (5) are suspended at the lower part of the suspended ceiling installation foundation; and the light strip structure (5) is arranged throughout the suspended ceiling structure (4); The ceiling structure (4) includes a plurality of arc-shaped steel sheets (40) and a plurality of curved plates (42), wherein the arc-shaped steel sheets (40) are suspended below the main keel (2) through a plurality of ceiling adapters (41) of different heights, and at least two curved plates (42) are fixedly installed below the arc-shaped steel sheets (40), and the curved plates (42) installed on different arc-shaped steel sheets (40) are spliced together; The light strip structure (5) includes a plurality of light strip fixing plates (50) and a plurality of light strips. The light strip fixing plates (50) are fixedly mounted below the main keel (2) via light strip adapters (51). The light strips are fixedly mounted on the light strip fixing plates (50). The light strip fixing plates (50) and the plurality of curved plates (42) are spliced together to form a ceiling surface. The light strip fixing plate (50) divides the ceiling surface into a plurality of areas, each area presenting a concave structure, and the light strip fixing plate (50) is arranged at both ends of the bottom of the concave structure and passes through the entire ceiling surface; The construction method comprises the following steps: Step 1: Deepen the 3D model and use a total station to verify the structural dimensions of the main structure and the position information of each embedded part embedded in the main structure, that is, the coordinate points. Import the coordinate points of each embedded part into the completed 3D model of the main structure. Step 2: Create a BIM model of the large-span hyperbolic wavy aluminum plate precisely positioned ceiling. Import the main structure 3D model into Rhino to create a BIM model of the large-span hyperbolic wavy aluminum plate precisely positioned ceiling. The model includes the ceiling installation foundation, ceiling structure (4) and light strip structure (5). Step 3: Divide the large-span hyperbolic wavy aluminum plate to accurately position the ceiling and determine the height of each hanging point. First, determine the position of the light strip structure (5) in the BIM model of the large-span hyperbolic wavy aluminum plate to accurately position the ceiling. Divide multiple light strip fixing plates (50) on the ceiling surface, split the model of each light strip fixing plate (50) and export the CAD layout expansion drawing. In the CAD layout expansion drawing, mark the dimensions in detail and number them one by one. Determine the hanging point of the light strip structure (5), determine the height of the light strip adapter (51) at the hanging point and export the CAD drawing. The dimensions are marked in detail in the drawing and numbered one by one; the ceiling surface between adjacent light strip structures (5) is divided into multiple small areas, each small area is a curved plate (42), the model of each curved plate (42) is split and a CAD lofting expansion drawing is exported, the dimensions are marked in detail in the CAD lofting expansion drawing, and the numbers are numbered one by one; based on the position information of the curved plate (42) at the hoisting position, the height of the ceiling adapter (41) at the hoisting position and the shape and size of the arc-shaped steel sheet (40) are determined and the CAD drawing is exported, the dimensions are marked in detail in the CAD drawing, and the numbers are numbered one by one; Step 4: Make each component, cut and manufacture each component in sequence according to the CAD drawing, and mark the corresponding number on each component in time, perform sheet metal processing on the curved plate (42) and the light strip fixing plate (50), and finally perform surface spraying; Step 5: Build the ceiling installation foundation, recheck the structural dimensions of the main structure and the position information of each embedded part embedded in the main structure; build the main keel (2), install the cantilevered steel frame (3) and lay the fireproof insulation layer (6) to complete the construction of the ceiling installation foundation; Step 6, construct the ceiling surface, install the light strip adapter (51) and the ceiling adapter (41) in sequence at the design position of the corresponding light strip structure (5) on the main keel (2); then install the arc steel sheet (40) in sequence in sequence according to the sequence of numbers; fix the light strip fixing plate (50) in sequence under the light strip adapter (51) in sequence according to the sequence of numbers; assemble the curved plates (42) in each area of the ceiling surface with the light strip fixing plate (50) as the reference, and the general assembly principle is to assemble from the side with a small spacing, i.e., a small span, of the adjacent two light strip fixing plates (50) to the side with a large spacing, i.e., a large span, and use U-supports (7) and square wood (8) to lift the curved plate (42) to adjust the deformation of the curved plate (42) and improve the assembly accuracy. Finally, clean the joints, fill the joints and apply glue.

2. The construction method according to claim 1, characterized in that: The main keel (2) comprises a plurality of cross beams (20), which are fixedly installed at the bottom of the structural beam (1) at even intervals through embedded parts, forming a horizontal and vertical cross structure with the plurality of structural beams (1), and a plurality of embedded parts are embedded in the bottom of the structural beam (1).

3. The construction method according to claim 2, characterized in that: A plurality of arc-shaped steel sheets (40) are fixedly mounted below each crossbeam (20) via a ceiling adapter (41), a light strip fixing plate (50) is provided at the joint between two adjacent arc-shaped steel sheets (40), and at least two curved plates (42) are fixedly mounted below each arc-shaped steel sheet (40) via an L-shaped corner piece, a folded edge is provided around the curved plate (42), and a reinforcing rib is provided on the curved plate (42).

4. The construction method according to claim 1, characterized in that: The cantilevered steel frame (3) includes a plurality of tripods (30), the tops of the plurality of tripods (30) being connected into a whole by a connecting frame (31), the sides of the tripods (30) being fixedly mounted on a structural beam (1) provided on one side of the top of the main structure, the side of the structural beam (1) being pre-embedded with a plurality of embedded parts, and the sides of the tripods (30) being fixedly connected to the embedded parts.

5. The construction method according to claim 4, characterized in that: The connecting frame (31) is a rectangular frame structure, the extended side of the hypotenuse of the tripod (30) is fixedly arranged on the connecting crossbar (32), one side of the tripod (30) is connected to one end of the connecting crossbar (32) through a connecting longitudinal rod, and both ends of the connecting crossbar (32) are fixedly connected in the rectangular frame structure.

6. The construction method according to claim 3, characterized in that: The ceiling adapter (41) is a rod-shaped structure made of channel steel or I-beam. The upper end of the ceiling adapter (41) is suspended at the bottom of the beam (20), and the lower end of the ceiling adapter (41) is fixedly connected to the arc-shaped steel sheet (40).

7. The construction method according to claim 2, characterized in that: The light strip adapter (51) is a rod-shaped structure made of channel steel or I-beam. The upper end of the light strip adapter (51) is suspended at the bottom of the crossbeam (20). The lower end of the light strip adapter (51) is fixedly connected to the light strip fixing plate (50) through an L-shaped angle piece. The height of the light strip adapter (51) is adapted to the arc-shaped steel sheet (40).

8. The construction method according to claim 7, characterized in that: The light strip fixing plate (50) is a long plate-shaped structure with a certain curvature and adapted to the curved plate (42), and both sides of the light strip fixing plate (50) are spliced with the curved plate (42).

9. The construction method according to claim 1, characterized in that: A fireproof and thermal insulation layer (6) is provided on the top of the main structure, and a plurality of the structural beams (1) are wrapped in the fireproof and thermal insulation layer (6).

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