A continuous multi-curved sound-absorbing ceiling and its construction method

Abstract

This invention discloses a continuous multi-curved sound-absorbing ceiling and its construction method, including a steel frame assembly, a ceiling assembly, and a connecting assembly connecting the steel frame assembly and the ceiling assembly. The ceiling assembly includes a GRG board, dry-hanging components, and fixing nuts. The dry-hanging components include an embedded plate pre-embedded in the GRG board and a hanging plate fixed on the embedded plate. The hanging plate is perpendicular to the tangent of the curved ceiling at the corresponding position, and the fixing nuts are fixed to the side of the hanging plate. The connecting assembly is located near the end of the GRG board and includes an upper bearing, a lower bearing, fixing rods fixed to the inner rings of the upper and lower bearings respectively, an upper screw fixed to the outer ring of the upper bearing, and a lower screw fixed to the lower bearing. An insertion hole is opened on the top side wall of the arc-shaped keel, and the upper screw is inserted into the insertion hole perpendicular to the side wall of the arc-shaped keel. The upper screw is locked by locking nuts located on the upper and lower sides of the arc-shaped keel. The lower end of the lower screw is threadedly connected to the fixing nut. This application is simple to operate, easy to install, and can ensure the installation accuracy of the multi-curved ceiling.

Description

Technical Field

[0001] This invention relates to the technical field of decorative ceilings, and in particular to a continuous multi-curved sound-absorbing ceiling and its construction method. Background Technology

[0002] The designs of ceilings in large spaces such as performance halls and auditoriums are incredibly diverse. The key to their design lies not only in using a limited combination of specifications to create a grand and imposing atmosphere and a sense of design, but also in solving a series of problems such as fire resistance, durability, and sound absorption and reflection within the space.

[0003] GRG board, also known as glass fiber reinforced gypsum board composite material, has a very unique molecular structure, resulting in relatively high hardness. Even in harsh external environments, it can effectively resist damage, deformation, and cracking caused by external conditions. Moreover, the material has very distinct lines and shapes, which can meet the needs of different degrees of curved surface design. The novel, complex, and unique design concepts give people a refreshing feeling, making it very suitable for the ceiling needs of large spaces such as performance halls and auditoriums.

[0004] Currently, curved GRG panel ceilings are widely used, referring to... Figure 1 This is a common installation structure for curved GRG panel ceilings. It includes a conversion steel frame, curved GRG panels, and dry-hanging components embedded in the GRG panels. The dry-hanging components have oblong holes, and are connected to the top steel frame by bolts passing through the oblong holes. Because it is a curved ceiling, the angle and position of the ceiling panels are variable. During installation, specialized construction personnel are required to control the GRG panels to prevent them from shaking. Then, the elevation of the four corners of the panels is adjusted until the panels are accurately positioned before the bolts are tightened to lock them in place. For continuous multi-curved ceilings, the construction is relatively complicated, and the need for specialized construction personnel to control the position of the GRG panels when adjusting them is labor-intensive and time-consuming. Summary of the Invention

[0005] This invention provides a continuous multi-curved surface sound-absorbing ceiling and a construction method thereof, which is simple to operate, easy to install, and can ensure the installation accuracy of the multi-curved surface ceiling.

[0006] The technical problem to be solved is that the existing curved ceiling panels have variable angles and positions. During installation, specialized construction personnel are required to control the GRG panels to prevent them from shaking. Then, the elevation of the four corners of the panels is adjusted through the waist-shaped holes on the hangers. Only after the panels are accurately positioned can the bolts be tightened to lock them in place. For continuous multi-curved ceilings, the construction is quite cumbersome, and the need for specialized construction personnel to control the position of the GRG panels when adjusting them is labor-intensive and time-consuming.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] The present invention provides a continuous multi-curved sound-absorbing ceiling, comprising a steel frame assembly, a ceiling assembly, and a connecting assembly connecting the steel frame assembly and the ceiling assembly;

[0009] The steel frame assembly includes vertical members and curved keels. The upper end of the vertical members is connected to the building structure, and the lower end is connected to the curved keels. The curved keels are set along the curvature of the curved ceiling.

[0010] The ceiling assembly includes GRG panels, dry-hanging components, and fixing nuts. The ends of the GRG panels are formed with folded edges for connecting adjacent GRG panels. The dry-hanging components include embedded plates pre-embedded in the GRG panels and hanging plates fixed on the embedded plates. The hanging plates are perpendicular to the tangent of the curved ceiling at the corresponding position, and the fixing nuts are fixed on the side of the hanging plates.

[0011] The connecting assembly is located near the end of the GRG plate and includes an upper bearing, a lower bearing, a fixing rod fixed to the inner rings of the upper and lower bearings respectively, an upper screw fixed to the outer ring of the upper bearing, and a lower screw fixed to the lower bearing. The arc-shaped keel is made of angle steel and has an insertion hole on its top side wall. The upper screw is inserted into the insertion hole perpendicular to the side wall of the arc-shaped keel. The upper screw is locked by locking nuts located on the upper and lower sides of the arc-shaped keel in conjunction with shock-absorbing washers. The lower end of the lower screw is threadedly connected to the fixing nut.

[0012] The present invention discloses a continuous multi-curved sound-absorbing ceiling. Further, a conversion steel frame is provided between the vertical rod and the arc-shaped keel. The conversion steel frame includes horizontal rods, longitudinal rods connecting the horizontal rods, and connecting rods connecting the arc-shaped keel and the horizontal rods. The horizontal rods are connected to the vertical rods.

[0013] The present invention provides a continuous multi-curved sound-absorbing ceiling, wherein the insertion hole is an oblong hole.

[0014] The present invention provides a continuous multi-curved sound-absorbing ceiling, wherein there is a gap between the folded edges of adjacent GRG boards, and a pad is provided in the gap, and the folded edges are connected by through bolts.

[0015] The present invention provides a continuous multi-curved sound-absorbing ceiling, wherein the joints of the GRG boards are filled with sealant, and a mesh fabric is pressed into the sealant.

[0016] The present invention provides a continuous multi-curved sound-absorbing ceiling, wherein the bottom of the GRG board is provided with a decorative layer.

[0017] The present invention provides a continuous multi-curved sound-absorbing ceiling, wherein a connecting groove is provided on the side of the insertion hole, and the upper screw is inserted into the insertion hole through the connecting groove.

[0018] This invention discloses a construction method for a continuous multi-curved sound-absorbing suspended ceiling, comprising the following steps:

[0019] Step 1: Perform a 3D scan of the building structure to obtain point clouds, import the point clouds into Rhino software, combine the actual 3D scan data to build a 3D model, simulate on-site construction, and identify potential conflict points in advance.

[0020] Step 2: Based on the model effect, optimize the design of the GRG board, divide it into different shaped sections according to the shape and size of different parts, and number them; draw the processing drawings of each section according to the optimized design;

[0021] Step 3: Prefabricate GRG panels in the factory according to the processing drawings and transport them to the construction site;

[0022] Step 4: Install the steel frame components. The components of the steel frame are fixed together by welding. After welding, check the firmness of each weld point and apply anti-rust paint after inspection.

[0023] Step 5: Conduct measurement and inspection. Positive errors are strictly prohibited in the installation of steel frame components; they can only be small, not large.

[0024] Step 6: According to the elevation and position in the central axis section drawing, install the corresponding GRG plates according to the principle of low to high and front to back. During installation, first connect the GRG plate to the lower screw of the connecting component, then install a pair of locking nuts on the upper screw. Then, insert the upper screw on the GRG plate into the insertion hole from the side. By controlling the locking nuts, rotate the upper screw to adjust the position of the GRG plate up and down. Move the GRG plate along the waist-shaped hole to adjust the size of the joint between the GRG plates, thereby adjusting the turning radius of the GRG plate to match the curvature of the arc keel. Repeatedly check the central axis position, front and back position, and the four corner elevations of the plates until the positioning is accurate. Then tighten the two locking nuts to lock them in place. The plates are connected by through screws.

[0025] Step 7: Fill the lower part of the folded seam with sealant and let it stand for 24 hours. Then fill the seam groove on the GRG board with sealant again. During this period, press in the mesh fabric to ensure that it does not protrude above the surface of the GRG board.

[0026] Step 8: Install the GRG panel finish.

[0027] This invention discloses a construction method for a continuous multi-curved sound-absorbing ceiling. Furthermore, an 8-12mm construction adjustment joint is reserved between each GRG panel during installation, and adjustment pads of appropriate thickness are added between the panels to appropriately adjust the turning radius of the GRG panel, so that the curvature is synchronized with the steel structure.

[0028] This invention discloses a construction method for a continuous multi-curved sound-absorbing ceiling. Furthermore, the installation of the GRG board adopts a combination of reference axis and leveling point for position control, and each positioning point should be fully considered to be perpendicular to the tangent of the curved surface.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. This application connects the GRG board to the curved keel using a connecting component and locks it with double locking nuts. During installation, the upper screw is inserted into the insertion hole, and the upper locking nut is used for initial positioning. Then, the installation position of the GRG board is corrected. The height of the GRG board can be adjusted up and down by rotating the upper screw. By setting the insertion hole to an oblong shape, the gap between the GRG panels can be adjusted, achieving precise installation, adjustment, and positioning of the multi-curved ceiling. It is easy to install and adjust.

[0031] 2. By setting the insertion hole as an oblong hole, and in conjunction with the 8-12mm construction adjustment joint reserved between each GRG panel during installation, as well as the shims, adjusting shims of appropriate thickness are added between the panels to properly adjust the turning radius of the GRG panel, so that the curvature is synchronized with the steel structure, and the installation accuracy of the GRG panel is guaranteed.

[0032] 3. Position control is achieved by combining a reference axis and leveling points. Each positioning point must be perpendicular to the tangent of the curved surface to ensure the installation accuracy of the hyperbolic GRG board.

[0033] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the background technology of this invention;

[0035] Figure 2 This is a schematic diagram of the arc contour of the ceiling panel of the present invention;

[0036] Figure 3 This is a schematic diagram of the installation structure of the present invention;

[0037] Figure 4 Figure 3 Enlarged diagram of part A in the middle;

[0038] Figure 5 This is a schematic diagram of the connection component structure of the present invention;

[0039] Figure 6 This is a plan view of the arc-shaped keel of the present invention.

[0040] Figure label:

[0041] 1. Steel frame assembly; 1.1 Vertical members; 1.2 Transition steel frame; 1.3 Curved keel; 2. Ceiling assembly; 2.1 GRG board; 2.2 Dry hanging parts; 2.3 Fixing nuts; 2.4 Folded edges; 3. Connecting assembly; 3.1 Upper bearing; 3.2 Lower bearing; 3.3 Fixing rod; 3.4 Upper screw; 3.5 Lower screw; 4. Insertion hole; 5. Locking nut; 6. Connecting groove; 8. Sealant; 9. Through screw. Detailed Implementation

[0042] like Figures 1-6 As shown, the present invention provides a continuous multi-curved sound-absorbing ceiling and a construction method thereof, the structure of which includes a steel frame assembly 1, a ceiling assembly 2, and a connecting assembly 3 connecting the steel frame assembly 1 and the ceiling assembly 2.

[0043] The steel frame assembly 1 includes vertical members 1.1, a transition steel frame 1.2, and an arc-shaped keel 1.3. The upper end of the vertical member 1.1 is connected to the building structure, and the lower end is connected to the transition steel frame 1.2. The transition steel frame 1.2 includes horizontal members connected to the vertical member 1.1, longitudinal members connecting the horizontal members, and connecting members connecting the arc-shaped keel 1.3 and the horizontal members. The length of the connecting members is variable to adapt to the curvature of the arc-shaped keel 1.3. The arc-shaped keel 1.3 is set along the curvature of the curved ceiling.

[0044] The ceiling assembly 2 includes multiple curved GRG panels 2.1, dry-hanging components 2.2 installed on the GRG panels 2.1, and fixing nuts 2.3. The ends of the GRG panels 2.1 are formed with folded edges 2.4 facing inward for connecting adjacent GRG panels 2.1. The dry-hanging components 2.2 include embedded plates pre-embedded in the GRG panels 2.1 and hanging plates fixed on the embedded plates. The hanging plates are perpendicular to the tangent of the curved keel 1.3 in the curved ceiling at the corresponding position. The fixing nuts 2.3 are welded to the side of the hanging plates.

[0045] The connecting assembly 3 is located near the end of the GRG plate 2.1. It includes an upper bearing 3.1, a lower bearing 3.2, a fixing rod 3.3 fixed to the inner rings of the upper bearing 3.1 and the lower bearing 3.2 respectively, an upper screw 3.4 fixed to the outer ring of the upper bearing 3.1, and a lower screw 3.5 fixed to the outer ring of the lower bearing 3.2. The arc-shaped keel 1.3 is made of angle steel, and an insertion hole 4 is opened on its top side wall. The upper screw 3.4 is inserted into the insertion hole 4 perpendicular to the side wall of the arc-shaped keel 1.3. The upper screw 3.4 is locked by locking nuts 5 located on the upper and lower sides of the arc-shaped keel 1.3 in conjunction with shock-absorbing pads. The lower end of the lower screw 3.5 is threadedly connected to the fixing nut 2.3.

[0046] Among them, the 4th hole is a waist-shaped hole, which adjusts the gap between the 2.1 GRG boards to achieve precise installation, adjustment and positioning of the multi-curved ceiling, making installation convenient and easy to adjust.

[0047] In addition, a connecting groove 6 is provided on the side of the socket 4, and the upper screw 3.4 is inserted into the socket 4 through the connecting groove 6, making installation more convenient.

[0048] There is an 8-12mm gap between the folded edges 2.4 of adjacent GRG panels 2.1. A shim 7 of appropriate thickness is placed within this gap. The shim 7 is made of wood or plasterboard. The folded edges 2.4 are connected by through bolts 9. By setting the insertion hole 4 as an oblong hole, and in conjunction with the 8-12mm construction adjustment joint reserved between each GRG panel 2.1 during installation, and the shim 7, adjusting shims 7 of appropriate thickness are added between the panels to appropriately adjust the turning radius of the GRG panel 2.1, ensuring that the curvature is synchronized with the steel structure and guaranteeing the installation accuracy of the GRG panel 2.1.

[0049] The seams of GRG board 2.1 are filled with sealant 8, and mesh fabric is pressed into the sealant 8.

[0050] The bottom of the GRG board 2.1 has a finishing layer, which includes a putty layer, a primer and a topcoat.

[0051] The methods include:

[0052] Due to the large allowable error in structural construction, the construction of the GRG slab 2.1 project requires high precision. Therefore, it is not possible to rely entirely on the civil engineering horizontal baseline. The baseline axis and leveling points must be re-measured, corrected, and verified.

[0053] Based on the actual structural dimensions on site, use a level and a standard steel tape measure to reflect the actual dimensions on the construction drawings. During measurement, the measurement error should be controlled and distributed to prevent the error from accumulating.

[0054] Based on the actual dimensions of the structure after verification, the drawings are further refined. Before the fabrication and installation of the GRG board 2.1, the dimensions of each finished surface must be laid out to ensure accurate installation.

[0055] Reasonable scanning routes and site selection can save time and avoid redundant scanning data. Therefore, it is necessary to select points on different floors for scanning to ensure that the steel structure is completely scanned, which is conducive to accurate component modeling.

[0056] A field construction coordinate system was introduced, and coordinate points were marked with an accuracy of 3mm to meet the accuracy requirements of later construction.

[0057] We use specialized software to process point clouds, clean and segment them, provide point clouds in PTS format, import them into Rhino software, and combine them with actual 3D scanning data to build a 3D model, simulate on-site construction, and identify conflict points in advance.

[0058] Based on the model effect, the design of GRG board 2.1 was optimized. It was divided into different shaped sections according to the shape and size of different parts and numbered. The processing drawings of each section were drawn according to the optimized design.

[0059] Steel frame component 1 is made of hot-dip galvanized steel. In combination with the size division of the panel and the on-site steel structure, the steel frame conversion layer must be made to meet the construction requirements of GRG panel 2.1. The connection of the steel frame is by welding. Welding can ensure the integrity. During the electric welding process, it is necessary to ensure that there are no spot welds or false welds. After the welding is completed, the firmness of each weld should be checked with a hammer. After the inspection, anti-rust paint should be applied.

[0060] During construction, measurements and inspections must be carried out. Positive errors are strictly prohibited in the fabrication of steel structures; they can only be smaller, not larger. If the dimensions are too small, adjustments will be made during the installation of the GRG panels (2.1).

[0061] Based on the optimized design drawings, the process is completed by a professional manufacturer, and the specific steps are as follows: Optimize design drawings → Make engraving mold with computer engraving machine → Lay the engraving mold flat and nail the mold frame → Silicone mold flipping → Precast semi-finished GRG → Repair and rectify defects in semi-finished products → Make base frame of semi-finished products → Silicone mold flipping → Production of finished GRG precast → Curing, drying, packaging and transportation.

[0062] When transporting raw materials, handle them gently during unloading to avoid chipping or breaking. Products of the same model should be placed together to avoid secondary deformation. The arrangement should be the same as when loading, and one layer is preferable. If the space is too narrow, it should not exceed two layers.

[0063] Horizontal transport should primarily rely on manual handling of individual blocks. Even when using handcarts, each block should be transported individually, and overlapping transport of multiple blocks is strictly prohibited.

[0064] For vertical transport, a low-speed winch is used in conjunction with a special canvas sling. After removing the plastic bubble wrap from the material, it is tied securely. During the lifting process, it is necessary to observe at all times whether it is caught on the scaffolding and to be able to stop in case of emergency. No one is allowed to stand below during the lifting.

[0065] Materials on the operating surface should be stacked according to their corresponding numbers and positions, about 2 meters away from the center axis on both sides, and divided into several small piles. This allows for easy observation of the markings on the back and sides of the products. If necessary, additional markings should be added with a marker. Materials should be replenished as needed to avoid overloading the entire operating platform scaffolding.

[0066] Based on the elevation and position in the central axis section diagram, the corresponding sections are positioned from the stage towards the audience, following the principle of starting low and then rising, and proceeding from front to back.

[0067] First, connect the GRG plate 2.1 to the lower screw 3.5 of the connecting assembly 3. Then, install a pair of locking nuts on the upper screw 3.4. Next, insert the upper screw 3.4 on the GRG plate 2.1 into the insertion hole 4 from the side. By controlling the locking nuts, rotate the upper screw 3.4 to adjust the position of the GRG plate 2.1 up and down. Move the GRG plate 2.1 along the waist-shaped hole to adjust the size of the joint between the GRG plates 2.1, thereby adjusting the turning radius of the GRG plate 2.1 to match the curvature of the arc-shaped keel 1.3. Repeatedly check the central axis position, front and rear position, and the four corner elevations of the plates until the positioning is accurate. Then, tighten the two locking nuts to lock it in place.

[0068] Repeat the above process until the back wall of the audience seating is correct, then proceed with the panel positioning and acceptance at the central axis.

[0069] For large-scale installation, follow the same sequence as the trial installation: first install the front row of GRG 2.1 boards on each layer, then expand outwards to both sides, and finally install the back row, similar to the top-down method of bricklaying. Leave 8-12mm construction adjustment joints between adjacent boards on the left, right, front, and back, using wooden or gypsum board shims of different thicknesses. Secure the shims with 8mm diameter, 60mm long horizontal bolts, locking at least two on the short side and the long side depending on the number of hanging points on the board. Continue in this manner until the walls on both sides are too small to fit the entire board. At this point, proceed with the wall veneer installation. The veneer should be 100-200mm higher than the finished surface of the GRG 2.1 boards.

[0070] During installation, the turning radius is adjusted by changing the gap width with shims of different thicknesses according to the actual direction of the steel structure such as the surface bridge or sound bridge, so as to achieve synchronization with the steel structure as much as possible.

[0071] The positioning of the angle steel for the secondary conversion layer should be combined with the lifting points of the plate, so that it is perpendicular to the lifting points and slightly biased to the rear, so that the screw rod remains vertical and slightly tilted backward.

[0072] The panels are connected by screws with adjusting shims in between. The lower part of the joint is filled with GRG joint compound 8. First, fill the joint to a depth of 20mm on the front and let it stand for 24 hours. Then, use joint compound 8 again to fill the deep joint grooves on the panel. During this period, press in the mesh cloth to ensure that it does not protrude above the panel surface, and it is advisable to slightly embed it by 1-2mm. The next day, apply a layer of interior wall putty to the gaps, and after it dries, sand it smooth. Then, apply 1-2 coats of interior wall putty, the number of coats depending on the smoothness, but the total thickness should not exceed 5mm. After sanding, apply one coat of primer and two coats of topcoat. Since many parts of the GRG panel 2.1 are double-curved and double-sided, the positioning of each terminal should be fully considered so as not to be perpendicular to the ground, but to be perpendicular to the tangent of the curved surface.

[0073] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A construction method for a continuous multi-curved sound-absorbing suspended ceiling, characterized in that, It includes a steel frame assembly (1), a ceiling assembly (2), and a connecting assembly (3) that connects the steel frame assembly (1) and the ceiling assembly (2); The steel frame assembly (1) includes vertical members (1.1) and arc-shaped keel (1.3). The upper end of the vertical member (1.1) is connected to the building structure, and the lower end is connected to the arc-shaped keel (1.3). The arc-shaped keel (1.3) is set along the curvature of the curved ceiling. The ceiling assembly (2) includes a GRG board (2.1), a dry-hanging component (2.2), and a fixing nut (2.3). The GRG board (2.1) has a folded edge (2.4) at its end for connecting adjacent GRG boards (2.1). The dry-hanging component (2.2) includes an embedded plate pre-embedded in the GRG board (2.1) and a hanging plate fixed on the embedded plate. The hanging plate is perpendicular to the tangent of the curved ceiling at the corresponding position. The fixing nut (2.3) is fixed on the side of the hanging plate. The connecting component (3) is located near the end of the GRG plate (2.1), and includes an upper bearing (3.1), a lower bearing (3.2), a fixing rod (3.3) fixed to the inner rings of the upper bearing (3.1) and the lower bearing (3.2) respectively, an upper screw (3.4) fixed to the outer ring of the upper bearing (3.1), and a lower screw (3.5) fixed to the lower bearing (3.2); the arc-shaped keel (1.3) is made of angle steel, and an insertion hole (4) is provided on its top side wall. The insertion hole (4) is a waist-shaped hole, and a connecting groove (6) is provided on the side of the insertion hole (4). The upper screw (3.4) is inserted into the insertion hole (4) from the connecting groove (6). The upper screw (3.4) is locked by locking nuts (5) located on the upper and lower sides of the arc-shaped keel (1.3) in conjunction with shock-absorbing pads; the lower end of the lower screw (3.5) is threadedly connected to the fixing nut (2.3); The method includes the following steps: Step 1: Perform a 3D scan of the building structure to obtain point clouds, import the point clouds into Rhino software, combine the actual 3D scan data to build a 3D model, simulate on-site construction, and identify potential conflict points in advance. Step 2: Based on the model effect, optimize the design of the GRG board, divide it into different shaped sections according to the shape and size of different parts, and number them; draw the processing drawings of each section according to the optimized design; Step 3: Prefabricate GRG panels in the factory according to the processing drawings and transport them to the construction site; Step 4: Install the steel frame components. The components of the steel frame are fixed together by welding. After welding, check the firmness of each weld point and apply anti-rust paint after inspection. Step 5: Conduct measurement and inspection. Positive errors are strictly prohibited in the installation of steel frame components; they can only be small, not large. Step 6: Install the corresponding GRG plates according to the elevation and position shown in the central axis section drawing, following the principle of low to high and front to back. During installation, first connect the GRG plate to the lower screw of the connecting component, then install a pair of locking nuts on the upper screw. Next, insert the upper screw on the GRG plate into the insertion hole through the side connecting groove. By controlling the locking nuts, rotate the upper screw to adjust the position of the GRG plate up and down. Move the GRG plate along the waist-shaped hole to adjust the size of the joint between the GRG plates, thereby adjusting the turning radius of the GRG plate to match the curvature of the arc keel. Repeatedly check the central axis position, front and back position, and the four corner elevations of the plates until the positioning is accurate. Then tighten the two locking nuts to lock them in place. The plates are connected by through screws. Step 7: Fill the lower part of the folded seam with sealant and let it stand for 24 hours. Then fill the seam groove on the GRG board with sealant again. During this period, press in the mesh fabric to ensure that it does not protrude above the surface of the GRG board. Step 8: Install the GRG panel finish.

2. The construction method of a continuous multi-curved sound-absorbing ceiling according to claim 1, characterized in that: A conversion steel frame (1.2) is provided between the vertical member (1.1) and the arc-shaped keel (1.3). The conversion steel frame (1.2) includes a horizontal member, a longitudinal member connected between the horizontal members, and a connecting member connected between the arc-shaped keel (1.3) and the horizontal member. The horizontal member is connected to the vertical member (1.1).

3. The construction method of a continuous multi-curved sound-absorbing ceiling according to claim 1, characterized in that: There is a gap between the folded edges (2.4) of adjacent GRG plates (2.1), and a pad is provided in the gap. The folded edges (2.4) are connected by through screws (9).

4. The construction method of a continuous multi-curved sound-absorbing ceiling according to claim 1, characterized in that: The joints of the GRG board (2.1) are filled with sealant (8), and mesh fabric is pressed into the sealant (8).

5. The construction method of a continuous multi-curved sound-absorbing ceiling according to claim 1, characterized in that: The bottom of the GRG panel (2.1) is provided with a decorative layer.

6. The construction method of a continuous multi-curved sound-absorbing ceiling according to claim 1, characterized in that: When installing each GRG panel, leave an 8-12mm construction adjustment joint. Add adjustment shims of appropriate thickness between the panels to adjust the turning radius of the GRG panel appropriately, so that the curvature is synchronized with the steel structure.

7. The construction method of a continuous multi-curved sound-absorbing ceiling according to claim 1, characterized in that: The installation of the GRG plate uses a combination of reference axes and leveling points for position control, and each positioning point must be fully considered to be perpendicular to the tangent of the curved surface.

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