Large arc-shaped suspended ceiling system and construction method thereof

Abstract

The invention discloses a large arc-shaped suspended ceiling system and a construction method thereof, a mode of'equal plates and unequal joints' is adopted, namely, the width of each plate adopts a fixed value, a hyperboloid is adjusted by changing the width of each plate joint, and'decorative curved surfaces' of a new scheme BIM model and an original scheme BIM model adopting the mode completely coincide; the fixed plate is wide, so that the arc-shaped ceiling does not need to be machined, the problems that the plate forming machining difficulty is large and the overall double-curved-surface curvature of the arc-shaped ceiling is difficult to guarantee due to the arrangement of the variable cross section of the arc-shaped ceiling are solved, meanwhile, the plates can be produced in batches, the construction efficiency is greatly improved, and the construction quality is guaranteed; by arranging the second connecting piece on the base steel structure, fixing the mounting pipe on the second connecting piece, fitting the radian of the inner cambered surface of the base steel structure and mounting the first connecting piece on the mounting pipe, the arc-shaped ceiling is more conveniently hung and connected, and the technical problem that a large arc-shaped ceiling is inconvenient to construct is solved.

Description

Technical Field

[0001] The invention relates to the technical field of suspended ceiling construction, and in particular to a large-scale arc-shaped suspended ceiling system and a construction method thereof. Background Art

[0002] In large public spaces, commercial places or high-end residences, as people's pursuit of beautiful and unique interior decoration effects increases, architects design more novel, modern and fashionable decorative structures within the scope of structural stress. This endless stream of new structural forms also poses new challenges to on-site decoration construction.

[0003] For large curved ceiling systems, which are composed of multiple curved ceilings, due to the unconventionality of the ceiling, including but not limited to extra-long length or width, extra-large curvature, irregular shape, etc., and the ceiling may need to achieve a more special hyperbolic visual effect after combined installation, it is necessary to carry out technical research in the installation aspect to find and determine the applicable installation method.

[0004] In particular, curved ceilings that are set at intervals and not fully paved are difficult to install because there are gaps between the slabs in the horizontal direction, they are not continuously overlapped, and the overall hyperbolic surface needs to be maintained as a continuous surface. This often requires BIM modeling in the early stage to try to operate or change parameters in the model.

[0005] On this basis, a solution for this working condition is proposed: the plate seam (lateral spacing of the plates) always maintains a fixed value during the surface change process, and the entire hyperbolic surface change is mainly adjusted by the plate width of the curved ceiling, that is, the hyperbolic curvature is achieved by the "equal seams and unequal plates" method; however, because the hyperbolic surface is generated by the Bezier curve, in order to ensure a fixed width of the plate seam, different widths of the same plate will be caused. The bottom cross-sectional width of the curved ceiling is greater than the upper cross-sectional width (the shape is fan-shaped after flattening). The fan-shaped strip can only be realized by welding technology. Due to the narrow plate surface, the hot melt deformation and stress changes generated during the welding process are uncontrollable. The curvature of the final product cannot match the curvature in the BIM model, and ultimately affects the decorative effect.

[0006] Therefore, a more effective way needs to be designed to solve these problems. Summary of the invention

[0007] The present invention provides a large-scale curved ceiling system and a construction method thereof, so as to solve the technical problems that, during the construction of the large-scale curved ceiling system, the curved ceiling is inconvenient to install, takes a long time to install, and has a high cost, and the "equal seams and unequal plates" method causes the plates to be processed into variable cross-sections, resulting in great difficulty in forming and processing the plates, and it is difficult to ensure the curvature of the hyperbolic surface.

[0008] To achieve the above object, the present invention adopts the following technical solution: The present invention provides a large-scale curved ceiling system, including a base steel structure, a mounting tube, a curved ceiling, a first connecting piece, and a second connecting piece; the base steel structure includes a grid structure composed of a main keel and a secondary keel, which is an outwardly convex curved surface in the vertical direction and also in the horizontal direction, and is a hyperbolic structure as a whole; the main keels are arranged at intervals and in an arc shape, the secondary keels are arranged at intervals in the length direction of the main keel and are arranged in an interlaced manner with the main keel, and the main keel is in an upwardly convex arc shape; the mounting tube is horizontally arranged on the inner curved surface of the base steel structure, fixed on the inner side surface of the main keel, perpendicular to the main keel and spaced in the length direction of the main keel, and the mounting tube is in an arc shape as a whole; the curved ceiling is arranged on the mounting tube and spaced, the curved ceiling is on a curved surface as a whole, and the curvature of the overall curved surface of the curved ceiling fits the curvature of the inner curved surface of the base steel structure; The curved ceiling includes four sections of plates, namely, a first plate, a second plate, a third plate and a fourth plate; each section of the curved ceiling is a curved long strip, and both sides of the outer curved surface of each section of the plate are provided with inwardly bent edges; the ends of the four sections of the plate are spliced ​​and arranged, and are extended along the length direction of the main keel; the first plate is arranged at the bottom of the main keel, the bottom end of the second plate is spliced ​​with the top end of the first plate, the top end of the second plate is spliced ​​with the bottom end of the third plate, and the top end of the third plate is spliced ​​with the bottom end of the fourth plate; The first connecting member is arranged between the mounting tube and the curved ceiling, and is used to fix and adjust the curved ceiling; the first connecting member includes a first clamp, a connecting plate, a connecting angle code, and a clamping plate; The first clamp is arranged around the mounting tube and is arranged at intervals on the mounting tube. Two first holes are opened on the plate surface of the connecting plate near the two ends. The first holes are arranged along the length of the connecting plate. The first hole on one side is fixed to the first clamp by bolts, and the first hole on the other side is fixed to the connecting angle code by bolts; the connecting angle code is an L-shaped plate, the vertical part of which is connected to the connecting plate by bolts, and the horizontal part is fixed to the middle part of the clamping plate by bolts; the clamping plate is a U-shaped strip plate with an opening downward, and the two ends of the clamping plate are clamped and arranged inside the folded edge of the arc ceiling; the second connecting piece is arranged between the main keel and the mounting tube, and is used to fix the mounting tube.

[0009] Preferably, the main keel is an H-shaped steel, the mounting pipe is a round steel pipe, and the mounting pipe is formed by connecting multiple short pipe sections.

[0010] Preferably, the second connecting member includes a first fixing plate, a second fixing plate, tension bolts, and a second clamp; the first fixing plate is a rectangular plate, which is arranged on the bottom surface of the lower flange plate of the main keel, and the short side of the first fixing plate extends beyond the lower flange of the main keel; the second fixing plate includes two strip plates, which are arranged on the top surface of the upper flange plate of the main keel, and the two ends of the second fixing plate extend beyond the upper flange of the main keel; the tension bolts pass through the corners of the first fixing plate and the two ends of the second fixing plate to fix the first fixing plate and the second fixing plate to the main keel; the second clamp is Ω-shaped, including a ring portion and an end portion.

[0011] Preferably, the ring portion of the second clamp is buckled on the outer side surface of the mounting tube, and the end portion is fixed to the first fixing plate by a tension screw.

[0012] Preferably, the second connecting member also includes a hanger, one end of which is arranged in the middle of the first fixed plate, and the other end of the hanger is arranged on the third fixed plate; the ring portion of the second clamp is buckled on the outer side of the mounting tube, and the end is fixed to the third fixed plate by bolts.

[0013] Preferably, both ends of the clamping plate are fixed to the folded edges of the curved ceiling by self-tapping screws.

[0014] Preferably, two second holes are arranged on the plate surface near the two ends of the card plate, the second holes are arranged along the length direction of the card plate, and fastening bolts are arranged in the second holes for tightening the card plate and the arc-shaped ceiling.

[0015] Preferably, the four sections of the plate body are connected by an insert; the insert is a U-shaped plate, one end of which is inserted into the inner side of the end of the plate body and fixed by bolts, and the other end is extended outward for inserting another plate body.

[0016] The present invention also provides a construction method for the above-mentioned large-scale curved ceiling system, comprising the following steps: Step 1: Deepen the design: Create a BIM model of the overall curved ceiling, divide the curved ceiling into four sections in the length direction in the model, and then determine the number, length and horizontal spacing of each section of the board, and determine the seam division method, that is, the width of each board is the same, and the horizontal spacing between boards can be adjusted; Step 2: Modeling preview: Scan the base steel structure on site, collect information and perform BIM modeling, preview the installation process in the model, mark the installation points, determine the curvature, length and installation spacing of the installation pipes, and determine the hanging installation points of the curved ceiling on the installation pipes; Step 3, installation pipe construction: Mark the installation points of the installation pipe determined in step 1 on site, install the second connector at the marked point after marking, and then pass the installation pipe through the second clamp and fix it. The installation pipe is installed by welding after fixing and then continuing to penetrate after welding. Through preliminary shape finding, the overall arc-shaped installation pipe is formed to fit the inner arc of the base steel structure. Step 4: Mark the points on the installation pipe according to the hanging installation points in step 1 to facilitate the installation of the first connecting member; Step 5, installation of curved ceiling: first install the first plate, hoist the first plate to the installation position, install the first connector according to the marked points in step 3, fix the first clamp to the installation pipe, clamp and fix the clamping plate to the inner side of the folded edge of the first plate, and complete the installation of the first plate in sequence; then install the second plate, hoist the second plate and assemble and fix the end of the second plate with the end of the first plate; then repeat the above operations to complete the installation of the third plate and the fourth plate in sequence; Step 6, Adjustment of the curved ceiling: Observe at multiple angles and multiple positions on site, and adjust the curved ceiling according to the actual perception and visual effect, including adjustment of the board spacing, curvature and angle of the curved ceiling; Adjustment of the board spacing: Adjust the position of the first clamp on the mounting tube to achieve the lateral displacement of the curved ceiling, thereby adjusting the board spacing; Curvature adjustment: adjust the connection position of the first clamp, the connecting angle and the connecting plate to adjust the distance between the curved ceiling and the installation pipe, so as to achieve the curvature adjustment of the curved ceiling; Angle adjustment: adjust the rotation angle of the connecting angle code and the connecting plate to adjust the board surface direction of the curved ceiling, thereby achieving angle adjustment of the curved ceiling; The three adjustment methods are carried out in coordination with each other until the inner curved surface of the curved ceiling is adjusted to be smooth and flat as a whole without obvious warping and fluctuations.

[0017] Preferably, the curved ceiling is pre-processed on the ground before installation, including installing inserts at both ends of the second plate and the end of the third plate; and pre-clamping the clamping plate on the inner side of the folded edge of the curved ceiling to facilitate subsequent installation and fixing work.

[0018] The beneficial effects of the present invention are embodied in: 1) The present invention provides a large-scale curved ceiling system and a construction method thereof, and proposes a new scheme, which adopts the method of "equal plates and unequal seams", that is, the width of the plate adopts a fixed value, and the hyperbolic surface is adjusted by changing the width of the plate seam. The "decorative curved surface" of the BIM model of the new scheme and the BIM model of the original scheme using this method completely overlap, and only the seam separation method is changed, and there is no obvious difference in visual effect; the plate width is fixed, so there is no need to process the curved ceiling, which solves the problem that the plate forming processing is difficult due to the variable cross-section setting of the curved ceiling, and it is difficult to ensure the overall hyperbolic curvature of the curved ceiling. At the same time, the plates can also be mass-produced, which greatly improves the construction efficiency and ensures the construction quality; 2) The present invention provides a large-scale curved ceiling system and a construction method thereof. The base steel structure is a hyperbolic structure as a whole. The curved ceilings mounted on the base steel structure are numerous, extremely long, highly densely distributed, and have large curvatures and require end splicing, which makes construction difficult. A second connecting piece is arranged on the base steel structure, a mounting pipe is fixed on the second connecting piece, and multiple sections of mounting pipes are connected to form a complete curved pipe that fits the curvature of the inner curved surface of the base steel structure. The first connecting piece is installed on the mounting pipe, so that the curved ceiling can be mounted more conveniently. Only a crane, a lifting platform, and a small number of workers are required to complete the construction, which solves the technical problem of inconvenient construction of large curved ceilings, greatly improves construction efficiency, reduces consumption of manpower and material resources, saves costs, and has good economy. 3) The present invention provides a large-scale curved ceiling system and a construction method thereof. Since there are a large number of curved ceilings and a large number of connection nodes, there are errors during installation. After installation, the overall curved ceiling may not be smooth in appearance, and may be uneven, concave, convex or warped. By adjusting the first connecting member, the angle, curvature and the width of the plate seam between adjacent plates of the curved ceiling can be adjusted, thereby ensuring the hyperbolic structure of the curved ceiling and achieving smooth curved surfaces of the curved ceiling when observed from multiple angles, thereby achieving a beautiful visual effect. 4) The present invention provides a large-scale curved ceiling system and a construction method thereof. In order to match the lateral curvature of the inner curved surface of the base steel structure, the installation pipe adopts the method of "folding instead of bending", that is, a plurality of branch pipes are connected in a zigzag manner to form an arc as a whole, with less stress, convenient installation and easy adjustment; in order to match the vertical curvature of the inner curved surface of the base steel structure, the plurality of plate sections of the curved ceiling are connected by insert parts, also adopting the method of "folding instead of bending", so as to realize the curved ceiling in the vertical direction, which is convenient for installation and reduces the stress and deformation influence of the curved ceiling.

[0019] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention; the main purpose and other advantages of the present invention may be realized and obtained through the solutions particularly pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side sectional view of the curved ceiling system of the present invention.

[0021] Figure 2 The three-dimensional structure of the curved ceiling of the present invention Figure 1 .

[0022] Figure 3 The three-dimensional structure of the curved ceiling of the present invention Figure 2 .

[0023] Figure 4 It is a partial enlarged view of the curved ceiling of the present invention.

[0024] Figure 5 It is an enlarged view of the first connecting member and the second connecting member of the present invention.

[0025] Figure 6 The structure of the first connecting member of the present invention is Figure 1 .

[0026] Figure 7 The structure of the first connecting member of the present invention is Figure 2 .

[0027] Figure 8 The structure of the second connecting member of the present invention is Figure 1 .

[0028] Fig. 9 The structure of the second connecting member of the present invention is Figure 2 .

[0029] Fig.10 It is a front view of the core insert of the present invention.

[0030] Fig.11 It is a cross-sectional view of the core insert of the present invention.

[0031] Figure numerals: 1-base steel structure, 11-main keel, 12-second keel, 2-mounting pipe, 3-arc ceiling, 31-first plate, 32-second plate, 33-third plate, 34-fourth plate, 4-first connecting piece, 41-first clamp, 42-connecting plate, 43-connecting angle code, 44-clamp, 45-first hole, 46-second hole, 47-fastening bolt, 48-self-tapping screw, 5-second connecting piece, 51-first fixing plate, 52-second fixing plate, 53-tension bolt, 54-second clamp, 55-suspender, 56-third fixing plate, 6-insert core. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is described in detail below through examples. The following examples are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be interpreted as limiting the technical solution of the present invention.

[0033] Embodiment: This embodiment takes the interior decoration construction project of an exhibition hall as an example. The base steel structure 1 is a hyperbolic structure as a whole, and the curved ceiling 3 mounted on the base steel structure 1 is also a hyperbolic structure as a whole. The seam division method of the original node scheme is: the plate seam always maintains 200mm during the surface change process, and the entire hyperbolic surface change is mainly adjusted by the plate width of the aluminum plate, that is, the hyperbolic curvature is achieved by the "equal seams and unequal plates" method. However, since the hyperbolic surface is generated by the Bezier curve, in order to ensure a 200mm plate seam, the same plate will have different widths. The cross-sectional width of the bottom curved ceiling 3 is greater than the upper cross-sectional width, and the shape is fan-shaped after flattening. The fan-shaped strip can only be realized by welding technology. Due to the narrow plate surface, the hot melt deformation and stress changes generated during the welding process are uncontrollable. The curvature of the final product's plate surface cannot match the curvature in the BIM model, and ultimately affects the decorative effect. Therefore, a new solution is proposed for improvement. The new solution adopts the method of "equal plates but unequal seams". The BIM model of the new solution completely overlaps with the "decorative surface" of the BIM model of the original solution, except that the seam division method has changed, and there is no obvious difference in visual effect.

[0034] In order to realize the overall hyperbolic structure of the curved ceiling 3, it is necessary to adjust the lateral spacing of the plates, i.e., the plate seams. By arranging a second connecting piece 5 on the base steel structure 1, fixing the mounting tube 2 on the second connecting piece 5, connecting multiple sections of the mounting tube 2 to form a complete curved tube, which fits the curvature of the inner curved surface of the base steel structure 1, and installing the first connecting piece 4 on the mounting tube 2, it is more convenient to hang the curved ceiling 3. Only a crane, a lifting platform and a small number of workers are needed to complete the construction, which solves the technical problem of the inconvenience of constructing a large curved ceiling 3, greatly improves the construction efficiency, reduces the consumption of manpower and material resources, saves costs, and has good economy and promotion and application value.

[0035] Reference Figure 1-5 The present embodiment provides a large-scale curved ceiling system, including a base steel structure 1, a mounting tube 2, a curved ceiling 3, a first connecting member 4, and a second connecting member 5; the base steel structure 1 includes a grid structure composed of a main keel 11 and a secondary keel 12, which is a convex curved surface in the vertical direction and also in the horizontal direction, and is a hyperbolic structure as a whole; the main keel 11 adopts H-shaped steel, the main keel 11 is arranged at intervals and in an arc shape, and the secondary keel 12 is distributed at intervals in the length direction of the main keel 11 and is staggered with the main keel 11, The main keel 11 is in an upwardly convex arc shape; the mounting tube 2 is horizontally arranged on the inner arc surface of the base steel structure 1, fixed on the inner side surface of the main keel 11, perpendicular to the main keel 11 and spaced apart in the length direction of the main keel 11, the mounting tube 2 is a round steel tube, the mounting tube 2 is formed by connecting multiple short tubes, and the mounting tube 2 is in an arc shape as a whole; the arc ceiling 3 is arranged on the mounting tube 2 and spaced apart, the arc ceiling 3 is on an arc surface as a whole, and the overall arc curvature of the arc ceiling 3 fits the arc curvature of the inner arc surface of the base steel structure 1; The curved ceiling 3 includes four plate sections, namely a first plate 31, a second plate 32, a third plate 33 and a fourth plate 34; each plate section of the curved ceiling 3 is a curved long strip, and both sides of the outer curved surface of each plate section are provided with inwardly bent edges; the ends of the four plate sections are spliced ​​and arranged, extending along the length direction of the main keel 11; the first plate 31 is arranged at the bottom position of the main keel 11, the bottom end of the second plate 32 is spliced ​​with the top end of the first plate 31, the top end of the second plate 32 is spliced ​​with the bottom end of the third plate 33, and the top end of the third plate 33 is spliced ​​with the bottom end of the fourth plate 34.

[0036] Reference Figure 6 The first connecting member 4 is arranged between the mounting tube 2 and the curved ceiling 3, and is used to fix and adjust the curved ceiling 3; the first connecting member 4 includes a first clamp 41, a connecting plate 42, a connecting angle code 43, and a clamping plate 44; the first clamp 41 is arranged around the mounting tube 2 and is arranged at intervals on the mounting tube 2, and two first holes 45 are opened on the plate surface of the connecting plate 42 near both ends, and the first holes 45 are arranged along the length of the connecting plate 42, and the first hole 45 on one side is fixed to the first clamp 41 by bolts, and the first hole 45 on the other side is fixed to the connecting angle code 43 by bolts; the connecting angle code 43 is an L-shaped plate, and its vertical part is connected to the connecting plate 42 by bolts. The horizontal part is fixed to the middle part of the card plate 44 by bolts; the card plate 44 is a U-shaped strip plate with an opening downward, and the two ends of the card plate 44 are clamped and arranged inside the folded edge of the arc ceiling 3; two second holes 46 are arranged on the plate surface of the card plate 44 near the two ends, and the second holes 46 are arranged along the length of the card plate 44. Fastening bolts 47 are arranged in the second holes 46 to tighten the card plate 44 and the arc ceiling 3. The card plate 44 and the hanging plate are clamped by the fastening bolts 47 instead of being fixedly connected, so that the fastening bolts 47 can slide in the second holes 46 after being loosened, so that the card plate 44 can change its position in the hanging plate, thereby increasing flexibility.

[0037] Reference Figure 7 The two ends of the clamping plate 44 and the folded edges of the arc-shaped ceiling 3 can also be fixed by self-tapping screws 48.

[0038] Reference Figure 8The second connecting member 5 is arranged between the main keel 11 and the mounting tube 2, and is used to fix the mounting tube 2; the second connecting member 5 includes a first fixing plate 51, a second fixing plate 52, a tension bolt 53, and a second clamp 54; the first fixing plate 51 is a rectangular plate, which is arranged on the bottom surface of the lower flange plate of the main keel 11, and the short side of the first fixing plate 51 exceeds the lower flange of the main keel 11; the second fixing plate 52 includes two strip plates, which are arranged on the top surface of the upper flange plate of the main keel 11, and the two ends of the second fixing plate 52 exceed the upper flange of the main keel 11; the tension bolt 53 passes through the corner of the first fixing plate 51 and the two ends of the second fixing plate 52 to fix the first fixing plate 51 and the second fixing plate 52 on the main keel 11; the second clamp 54 is Ω-shaped, including a ring portion and an end portion; the ring portion of the second clamp 54 is buckled on the outer side surface of the mounting tube 2, and the end portion is fixed to the first fixing plate 51 by a tension screw.

[0039] Reference Fig. 9 The second connecting member 5 also includes a hanging rod 55, one end of which is arranged in the middle of the first fixing plate 51, and the other end of the hanging rod 55 is provided with a third fixing plate 56; the ring portion of the second hoop 54 is buckled on the outer side surface of the mounting tube 2, and the end portion is fixed to the third fixing plate 56 by bolts.

[0040] Reference Figure 10-11 The four sections of the plate are connected by an insert 6; the insert 6 is a U-shaped plate, one end of which is inserted into the inner side of the end of the plate and fixed by bolts, and the other end is extended outward for inserting another plate.

[0041] The present invention also provides a construction method for the above-mentioned large-scale curved ceiling system, comprising the following steps: Step 1: Deepen the design: Establish a BIM model of the overall curved ceiling 3, divide the curved ceiling 3 into four sections in the length direction in the model, and then determine the number, length and horizontal spacing of each section of the board, and determine the seam division method, that is, the width of each board is the same, and the horizontal spacing between the boards can be adjusted; Step 2: Modeling preview: Scan the on-site base steel structure 1, collect information and perform BIM modeling, preview the installation process in the model, mark the installation points, determine the curvature, length and installation spacing of the installation pipe 2, and determine the hanging installation points of the curved ceiling 3 on the installation pipe 2; Step 3, installation of the installation pipe 2: marking the installation point of the installation pipe 2 determined in step 1 on site, installing the second connector 5 at the marking point after marking, and then passing the installation pipe 2 through the second clamp 54 and fixing it. The installation pipe 2 is installed by welding after fixing, and then continuously threading after welding. Through preliminary shape finding, the installation pipe 2 is formed into an overall arc shape, which fits the inner arc of the base steel structure 1. Step 4: Mark the points of the installation pipe 2 according to the hanging installation points in step 1 to facilitate the installation of the first connecting member 4; Step 5, installation of the curved ceiling 3: first install the first plate 31, hoist the first plate 31 to the installation position, install the first connector 4 according to the marked points in step 3, fix the first hoop 41 to the installation pipe 2, clamp and fix the clamping plate 44 to the inner side of the folded edge of the first plate 31, and complete the installation of the first plate 31 in sequence; then install the second plate 32, hoist the second plate 32 and assemble and fix the end of the second plate 32 to the end of the first plate 31; then repeat the above operations to complete the installation of the third plate 33 and the fourth plate 34 in sequence; Step 6, adjusting the curved ceiling 3: observe at multiple angles and multiple positions on site, and adjust the curved ceiling 3 according to the actual perception and visual effect, including adjusting the board spacing, curvature and angle of the curved ceiling 3; Adjustment of the board spacing: adjusting the position of the first clamp 41 on the mounting tube 2 to achieve lateral displacement of the arc-shaped ceiling 3, thereby achieving adjustment of the board spacing; Curvature adjustment: adjusting the connection position of the first clamp 41, the connection angle code 43 and the connection plate 42 to adjust the distance between the curved ceiling 3 and the mounting tube 2, thereby achieving curvature adjustment of the curved ceiling 3; Angle adjustment: adjusting the rotation angle of the connecting angle code 43 and the connecting plate 42 to adjust the board surface direction of the curved ceiling 3, thereby achieving angle adjustment of the curved ceiling 3; The three adjustment methods are performed in coordination with each other until the inner curved surface of the curved ceiling 3 is adjusted to be smooth and flat as a whole without obvious warping and undulation.

[0042] Furthermore, the curved ceiling 3 is pre-processed on the ground before installation, including installing the inserts 6 at both ends of the second plate 32 and the end of the third plate 33; and pre-clamping the clamping plate 44 on the inner side of the folded edge of the curved ceiling 3 to facilitate subsequent installation and fixing work.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that a technician familiar with the technical field can think of within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A large curved ceiling system, characterized in that: It comprises a base steel structure (1), a mounting pipe (2), a curved ceiling (3), a first connecting piece (4), and a second connecting piece (5); The base steel structure (1) comprises a grid structure composed of a main keel (11) and a secondary keel (12), which is an outwardly convex curved surface in the vertical direction and also in the horizontal direction, and is a hyperbolic structure as a whole; The main keels (11) are arranged at intervals and in an arc shape, the secondary keels (12) are arranged at intervals in the length direction of the main keel (11) and are arranged in an interlaced manner with the main keel (11), and the main keel (11) is in an upwardly convex arc shape; The installation pipe (2) is horizontally arranged on the inner arc surface of the base steel structure (1), fixed to the inner side surface of the main keel (11), perpendicular to the main keel (11) and spaced apart in the length direction of the main keel (11), and the installation pipe (2) is generally arc-shaped; The curved ceiling (3) is arranged on the installation tube (2) and is distributed at intervals. The curved ceiling (3) is entirely on a curved surface, and the curvature of the entire curved surface of the curved ceiling (3) matches the curvature of the inner curved surface of the base steel structure (1). The curved ceiling (3) comprises four plate bodies, namely a first plate body (31), a second plate body (32), a third plate body (33) and a fourth plate body (34); each plate body of the curved ceiling (3) is a curved long strip plate, and both sides of the outer curved surface of each plate body are provided with inwardly bent edges; the ends of the four plate bodies are spliced ​​and arranged, and are extended along the length direction of the main keel (11); the first plate body (31) is arranged at the bottom position of the main keel (11), the bottom end of the second plate body (32) is spliced ​​with the top end of the first plate body (31), the top end of the second plate body (32) is spliced ​​with the bottom end of the third plate body (33), and the top end of the third plate body (33) is spliced ​​with the bottom end of the fourth plate body (34); The first connecting member (4) is arranged between the mounting tube (2) and the curved ceiling (3) and is used to fix and adjust the curved ceiling (3); the first connecting member (4) comprises a first clamp (41), a connecting plate (42), a connecting angle code (43), and a clamping plate (44); The first clamp (41) is disposed around the mounting tube (2) and is arranged at intervals on the mounting tube (2); two first holes (45) are provided on the plate surface of the connecting plate (42) near both ends; the first holes (45) are arranged along the length of the connecting plate (42); the first holes (45) on one side are fixed to the first clamp (41) by bolts, and the first holes (45) on the other side are fixed to the connecting angle code (43) by bolts; the connecting angle code (43) is an L-shaped plate, the vertical portion of which is connected to the connecting plate (42) by bolts, and the horizontal portion is fixed to the middle portion of the clamping plate (44) by bolts; the clamping plate (44) is a U-shaped strip plate with an opening facing downward, and the two ends of the clamping plate (44) are clamped and arranged inside the folded edge of the arc-shaped ceiling (3); The second connecting member (5) is arranged between the main keel (11) and the mounting tube (2) and is used to fix the mounting tube (2).

2. A large curved ceiling system as claimed in claim 1, characterized in that: The main keel (11) is an H-shaped steel, the mounting pipe (2) is a round steel pipe, and the mounting pipe (2) is formed by connecting a plurality of short pipe sections.

3. A large curved ceiling system as claimed in claim 2, characterized in that: The second connecting member (5) comprises a first fixing plate (51), a second fixing plate (52), tension bolts (53), and a second clamp (54); the first fixing plate (51) is a rectangular plate, arranged on the bottom surface of the lower flange plate of the main keel (11), and the short side of the first fixing plate (51) exceeds the lower flange of the main keel (11); the second fixing plate (52) comprises two strip plates, arranged on the top surface of the upper flange plate of the main keel (11), and the two ends of the second fixing plate (52) exceed the upper flange of the main keel (11); the tension bolts (53) pass through the corners of the first fixing plate (51) and the two ends of the second fixing plate (52), and fix the first fixing plate (51) and the second fixing plate (52) on the main keel (11); the second clamp (54) is Ω-shaped, and comprises a ring portion and an end portion.

4. A large curved ceiling system as claimed in claim 3, characterized in that: The ring portion of the second clamp (54) is buckled onto the outer side surface of the mounting tube (2), and the end portion is fixed to the first fixing plate (51) via a tensioning screw.

5. A large curved ceiling system as claimed in claim 3, characterized in that: The second connecting member (5) further comprises a suspension rod (55), one end of which is arranged at the middle of the first fixing plate (51), and the other end of which is arranged at a third fixing plate (56); the ring portion of the second clamp (54) is buckled on the outer side surface of the mounting tube (2), and the end portion is fixed to the third fixing plate (56) by means of bolts.

6. A large curved ceiling system as claimed in claim 3, characterized in that: The two ends of the clamping plate (44) are fixed to the folded edges of the arc-shaped ceiling (3) by means of self-tapping screws (48).

7. A large curved ceiling system as claimed in claim 3, characterized in that: Two second holes (46) are arranged on the plate surface of the clamping plate (44) near the two ends. The second holes (46) are arranged along the length of the clamping plate (44). Fastening bolts (47) are arranged in the second holes (46) for fastening the clamping plate (44) and the arc-shaped ceiling (3).

8. A large curved ceiling system as claimed in claim 3, characterized in that: The four sections of the plate body are connected by means of an insert (6); the insert (6) is a U-shaped plate, one end of which is inserted into the inner side surface of the end of the plate body and fixed by bolts, and the other end of which is extended outwards and used for inserting another plate body.

9. A construction method for a large curved ceiling system as claimed in any one of claims 3 to 8, characterized in that: The steps include: Step 1: Deepen the design: Establish a BIM model of the overall curved ceiling (3), divide the curved ceiling (3) into four sections in the length direction in the model, and then determine the number, length and horizontal spacing of each section of the board, and determine the seam division method, that is, the width of each board is the same, and the horizontal spacing between the boards can be adjusted; Step 2: Modeling and rehearsal: Scan the on-site base steel structure (1), collect information, and then perform BIM modeling. Rehearse the installation process in the model, mark the installation points, determine the curvature, length, and installation spacing of the installation pipe (2), and determine the hanging installation points of the curved ceiling (3) on the installation pipe (2); Step 3, installation of the installation pipe (2): marking the installation point of the installation pipe (2) determined in step 1 on site, installing the second connection piece (5) at the marked point after marking, and then passing the installation pipe (2) through the second clamp (54) and fixing it. The installation pipe (2) is installed by welding after fixing and then continuing to pass through after welding. After preliminary shape finding, the installation pipe (2) is formed into an overall arc shape, which fits the inner arc of the base steel structure (1); Step 4, marking the points on the installation tube (2) according to the hanging installation points in step 1, so as to facilitate the installation of the first connecting member (4); Step 5, installation of the curved ceiling (3): first install the first plate (31), hoist the first plate (31) to the installation position, install the first connecting piece (4) according to the marked point in step 3, fix the first clamp (41) to the installation pipe (2), clamp and fix the clamping plate (44) to the inner side of the folded edge of the first plate (31), and complete the installation of the first plate (31) in sequence; then install the second plate (32), hoist the second plate (32) and assemble and fix the end of the second plate (32) to the end of the first plate (31); then repeat the above operations to complete the installation of the third plate (33) and the fourth plate (34) in sequence; Step 6, adjusting the curved ceiling (3): observing at multiple angles and multiple positions on site, and adjusting the curved ceiling (3) according to actual perception and visual effects, including adjusting the board spacing, curvature and angle of the curved ceiling (3); Adjustment of the spacing between the panels: adjusting the position of the first clamp (41) on the mounting tube (2) to achieve lateral displacement of the curved ceiling (3), thereby achieving adjustment of the spacing between the panels; Curvature adjustment: adjusting the connection position of the first clamp (41), the connection angle code (43) and the connection plate (42) to adjust the distance between the curved ceiling (3) and the installation tube (2), thereby achieving curvature adjustment of the curved ceiling (3); Angle adjustment: adjusting the rotation angle of the connecting angle code (43) and the connecting plate (42) to adjust the plate surface orientation of the curved ceiling (3), thereby achieving angle adjustment of the curved ceiling (3); The three adjustment methods are performed in coordination with each other until the inner curved surface of the curved ceiling (3) is adjusted to be smooth and flat as a whole without obvious warping and undulation.

10. A construction method for a large curved ceiling system as claimed in claim 9, characterized in that: Before the installation of the curved ceiling (3), pre-processing is performed on the ground, including installing the inserts (6) at both ends of the second plate (32) and at the end of the third plate (33); and pre-clamping the clamping plate (44) on the inner side of the folded edge of the curved ceiling (3) to facilitate subsequent installation and fixing work.

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