Arc-shaped curved surface suspended ceiling structure based on BIM and construction method

Abstract

The present invention relates to the technical field of suspended ceilings. Specifically disclosed are an arc-shaped curved surface suspended ceiling structure based on BIM and a construction method. The arc-shaped curved surface suspended ceiling structure comprises conversion layer furring connected to the bottom of a roof, a plurality of groups of mounting units that are connected to the bottom of the conversion layer furring and have arc-shaped curved bottom surfaces, a plurality of groups of mounting plates mounted at the bottom of the mounting units, and a finishing layer. The sides of the mounting units close to the conversion layer furring are flat. Each group of mounting units comprises main furring, a plurality of groups of blade furring, and nailing furring that are mounted at the bottom of the blade furring and that are fitted with the bottom of the blade furring to form an arc-shaped mounting framework. The bottom of the arc-shaped mounting framework is an arc-shaped curved surface, and the main furring in each group of mounting units are located on the same horizontal plane. The whole suspended ceiling is divided into a plurality of mounting units with arc-shaped curved bottom surfaces. The bottom surfaces of the plurality of mounting units form an arc-shaped mounting surface for the mounting of the mounting plates, and there is no need to customize mounting plates with arc-shaped curved surfaces, thereby reducing the machining difficulty.

Description

A curved ceiling structure and construction method based on BIM Technical Field

[0001] The present invention relates to the technical field of suspended ceiling engineering, and more particularly to a curved surface suspended ceiling structure and a construction method based on BIM. Background Art

[0002] Large venues often use complex free-form surfaces to express grandeur, smoothness, and fluidity. These complex free-form ceilings are typically installed with adjustable keel joints and intensive measurement to control installation accuracy. These ceilings are typically assembled from suspended panel units to form the curved decorative layer. Because each panel unit requires high-precision positioning, the measurement workload is extensive, making it difficult to effectively guarantee the final quality.

[0003] Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a curved surface ceiling structure and construction method based on BIM;

[0005] The solution adopted by the present invention to solve the technical problem is:

[0006] A BIM-based curved ceiling structure includes a transfer layer keel connected to the bottom of the roof, a plurality of mounting units connected to the bottom of the transfer layer keel and having a curved bottom, a plurality of mounting plates mounted on the bottom of the mounting units, and a finishing layer disposed on the bottom of the mounting plates. The mounting units are flat on one side adjacent to the transfer layer keel.

[0007] Each group of the mounting units includes multiple groups of main keels arranged in parallel and connected to the bottom of the conversion layer keel, multiple groups of blade keels connected to the bottom of the main keel and arranged in parallel, and covering keels installed at the bottom of the blade keels and cooperating with the bottom of the blade keels to form an arc-shaped mounting frame; the bottom of the arc-shaped mounting frame is an arc-shaped curved surface, and the main keels in each group of the mounting units are on the same horizontal plane.

[0008] In some possible implementations,

[0009] The side of the blade keel close to the conversion layer keel is a plane, and the bottoms of the blade keel and the covering keel are both arc-shaped.

[0010] In some possible implementations,

[0011] The transition layer keel is connected to the roof via a first connecting piece; the transition layer keel is connected to the main keel via a second connecting piece.

[0012] In some possible implementations,

[0013] The first connecting member includes multiple groups of first hoops connected to the steel trusses in the roof, multiple groups of second hoops installed on the transfer layer keel, and multiple groups of first screw rods with one end screwed to the first hoops and the other end connected to the second hoops.

[0014] In some possible implementations,

[0015] The second connecting member includes a plurality of groups of third clamps connected to the conversion layer keel, and a plurality of groups of second screw rods, one end of which is screwed to the third clamp and the other end is connected to the main keel.

[0016] In some possible implementations,

[0017] The conversion layer keels include multiple groups of conversion main keels respectively connected to the second hoop and arranged in parallel, and multiple groups of conversion secondary keels located at the bottom of the conversion main keels; the conversion main keels are arranged parallel to the roof, and the conversion secondary keels are multiple groups and are arranged at equal intervals along the long direction of the conversion main keels;

[0018] The third clamp is connected to the conversion main keel and the conversion secondary keel respectively.

[0019] In some possible implementations,

[0020] The third clamp includes a first U-shaped card with an opening slot 1 and a second U-shaped card with an opening slot 2; the opening of the opening slot 1 is downward, and the opening of the opening slot 2 is upward, and a connecting ear plate is provided on the side where the first U-shaped card and the second U-shaped card are close to each other.

[0021] In some possible implementations,

[0022] There are multiple groups of blade keels, and multiple groups of slots are arranged at the bottom of each group of blade keels along the long direction; the covering keel is installed in the slot, and the bottom is coplanar with the bottom of the blade keel.

[0023] In some possible implementations,

[0024] The mounting plate is a silicon ceramic plate; the cross section of the blade keel is an L-shaped structure, including a flange plate connected to the main keel and arranged horizontally, and an arc-shaped plate connected to the flange plate and away from the flange plate.

[0025] A construction method based on the above-mentioned curved surface ceiling structure specifically comprises the following steps:

[0026] Step S1: Modeling the curved ceiling based on BIM technology, and dividing the curved ceiling model into several installation units;

[0027] Step S2: Scan the steel truss using a 3D laser scanner, and obtain the actual 3D model and the actual spatial dimensions of the on-site building by processing the point cloud data;

[0028] Step S3: Compare the actual 3D model with the 3D model created using BIM to determine the positional relationship between the transfer layer keel, the steel truss, and each installation unit;

[0029] Step S4: Process the blade keel and the cladding keel according to the three-dimensional model established by BIM; and assemble the installation unit;

[0030] Step S5: installing the transfer layer keel;

[0031] Step S6: Connecting the assembled installation units to the transfer layer keels respectively by hoisting;

[0032] Step S7: After all installation units are installed, the installation panels and finishing layers are constructed.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention divides the entire ceiling into multiple installation units. Before on-site installation, each installation unit is first assembled, and then each installation unit is connected to the transfer layer keel by hoisting. The top surface of the installation unit is flat and horizontally arranged, which reduces the positioning difficulty during the construction process, greatly improves the construction efficiency, and reduces the construction cost.

[0035] The present invention divides the entire ceiling into multiple installation units with arc-shaped bottom surfaces, and the bottom surfaces of the multiple installation units form arc-shaped installation surfaces for installing installation plates. Compared with the existing technology, the present invention does not require customized installation plates with arc-shaped surfaces, thereby reducing the difficulty of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic diagram of the connection relationship of the present invention;

[0037] FIG2 is an enlarged schematic diagram of point A in FIG1 of the present invention;

[0038] FIG3 is a side view of the blade keel of the present invention;

[0039] FIG4 is a schematic structural diagram of the second clamp in the present invention;

[0040] FIG5 is a schematic structural diagram of the third clamp in the present invention;

[0041] Among them: 1. Transfer layer keel; 2. Installation unit; 21. Main keel; 22. Blade keel; 221. Flange plate; 222. Arc plate; 23. Covering keel; 3. First connecting piece; 31. First clamp; 32. First screw; 33. Second clamp; 4. Second connecting piece; 41. Third clamp; 411. First U-shaped clip; 4111. Opening slot 1; 412. Second U-shaped clip; 4121. Opening slot 2; 413. Connecting ear plate; 42. Second screw; 5. Installation plate; 100. Steel truss. DETAILED DESCRIPTION

[0042] In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integration; they can refer to direct connections or indirect connections through an intermediary; they can refer to internal communication between two components or interactions between two components. The terms "first," "second," and similar terms mentioned in this application do not denote any order, quantity, or importance; they are simply used to distinguish between different components. Similarly, terms such as "one" or "a" do not indicate a quantitative limitation; rather, they indicate the presence of at least one. In the implementation of this application, "and / or" describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more. For example, "plurality" refers to two or more positioning posts. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0043] The present invention is described in detail below.

[0044] As shown in Figures 1 to 5:

[0045] A curved ceiling structure based on BIM includes a transfer layer keel 1 connected to the bottom of the roof, several groups of mounting units 2 connected to the bottom of the transfer layer keel 1 and having a curved bottom, multiple groups of mounting plates 5 mounted on the bottom of the mounting units 2, and a finishing layer provided on the bottom of the mounting plates 5. The side of the mounting unit 2 close to the transfer layer keel 1 is flat.

[0046] Each group of the mounting units 2 includes multiple groups of main keels 21 arranged in parallel and connected to the bottom of the conversion layer keel 1, multiple groups of blade keels 22 connected to the bottom of the main keel 21 and arranged in parallel, and a covering keel 23 installed at the bottom of the blade keel 22 and cooperating with the bottom of the blade keel 22 to form an arc-shaped mounting skeleton; the bottom of the arc-shaped mounting skeleton is an arc-shaped curved surface, and the main keels 21 in each group of the mounting units 2 are on the same horizontal plane.

[0047] When the present invention is used to construct a curved ceiling, the conversion layer keel 1 is first installed, and then a plurality of installation units 2 are respectively connected to the conversion layer keel 1. The conversion layer keel 1 enables the installation units 2 to be connected more stably and reliably.

[0048] In the entire curved surface ceiling structure, due to the variable curvature and radian of the curved surface ceiling, the division of the installation units 2 is mainly based on reflecting the shape and facilitating installation; each installation unit 2 is first assembled at the construction site, and after assembly, it is installed at the corresponding position of the conversion layer keel 1 by hoisting; since the top surface of each group of installation units 2 is a plane, this allows for effective control of the curved surface by only controlling the distance between the top surface of the installation unit 2 and the roof, which will greatly reduce the measurement and positioning work during the installation process compared to the existing technology, and effectively improve construction efficiency.

[0049] In some possible implementations, in order to facilitate the connection between the main keel 21 and the blade keel 22 in each group of mounting units 2;

[0050] The side of the blade keel 22 close to the conversion layer keel 1 is flat, and the bottoms of the blade keel 22 and the covering keel 23 are both arc-shaped.

[0051] The mounting plate 5 is a silicon ceramic plate; as shown in Figure 3, the cross-section of the blade keel 22 is an L-shaped structure, including a flange plate 221 connected to the main keel 21 and arranged horizontally, and an arc-shaped arc plate 222 connected to the flange plate 221 and away from the flange plate 221.

[0052] The flange plate 221 is connected to the bottom of the main keel 21. The flange plate 221 is horizontally arranged and connected to the horizontally arranged main keel 21, so that the main keel 21 and the blade keel 22 are reliably connected;

[0053] The blade keel 22 is strengthened in rigidity by providing a flange plate 221 , and the blade keel 22 is integrated with the main keel 21 and the cladding keel 23 through the flange plate 221 .

[0054] The bottoms of the blade keel 22 and the covering keel 23 are both arc-shaped, and the two are used together for an arc-shaped surface. The mounting plate 5 is mounted on the arc-shaped surface to meet the requirements of the final arc-shaped ceiling.

[0055] In some possible implementations, in order to effectively realize the connection between the roof and the transfer layer keel 1, and the transfer layer keel 1 and the installation unit;

[0056] The transition layer keel 1 is connected to the roof via a first connecting member 3 ; the transition layer keel 1 is connected to the main keel 21 via a second connecting member 4 .

[0057] In some possible implementations,

[0058] The first connecting member 3 includes multiple groups of first hoops 31 connected to the steel trusses 100 in the roof, multiple groups of second hoops 33 installed on the conversion layer keel 1, and multiple groups of first screw rods 32 with one end screwed to the first hoop 31 and the other end connected to the second hoop 33.

[0059] As shown in FIG2 , one end of the first screw rod 32 is screwed to the first clamp 31, and the other end is connected to the second clamp 33. When installing each group of mounting units 2, the position relationship of the first screw rod 32 is adjusted vertically so that the position relationship between the transfer layer keel 1 and each group of mounting units 2 meets the design requirements. After all the installations are completed, the curved surfaces of each group of mounting units 2 are connected to form a curved mounting surface for mounting the mounting plate 5 that meets the design requirements.

[0060] As shown in Figure 4, the second clamp 33 includes an upper clamp connected to the end of the first screw rod 32 and a lower clamp that cooperates with the upper clamp to form a clamping cavity. The conversion layer keel 1 is installed in the clamping cavity; the upper clamp and the lower clamp are connected by bolts.

[0061] In some possible implementations, in order to effectively connect the second connecting member 4 to the main keel 21;

[0062] The second connecting member 4 includes a plurality of third clamps 41 connected to the transfer layer keel 1, and a plurality of second screw rods 42 with one end screwed to the third clamp 41 and the other end screwed to the main keel 21;

[0063] In some possible implementations, in order to ensure that the conversion layer keel 1 has good stability;

[0064] The conversion layer keel 1 includes multiple groups of conversion main keels respectively connected to the second hoop 33 and arranged in parallel, and multiple groups of conversion secondary keels located at the bottom of the conversion main keels; the conversion main keels are arranged parallel to the roof, and the conversion secondary keels are multiple groups and are arranged at equal intervals along the long direction of the conversion main keels;

[0065] The conversion main keel is installed above the conversion secondary keel, and the conversion main keel and the conversion secondary keel are fixedly connected through the third clamp 41. The second clamp 33 is sleeved on the outside of the conversion main keel and connected to the first screw rod 32;

[0066] Multiple sets of conversion main keels are arranged horizontally and on the same horizontal plane, and conversion secondary keels are installed at the bottom of the conversion main keels;

[0067] The third clamp 41 is connected to the conversion main keel and the conversion secondary keel respectively.

[0068] The conversion main purlin and conversion secondary purlin are both supported by galvanized rectangular tubes.

[0069] In some possible implementations, in order to effectively realize the connection between the conversion main keel and the conversion secondary keel;

[0070] As shown in Figure 5, the third clamp 41 includes a first U-shaped card 411 provided with an opening groove 1 4111 and a second U-shaped card 412 provided with an opening groove 2 4121; the opening of the opening groove 1 4111 is downward, and the opening of the opening groove 2 4121 is upward, and a connecting ear plate 413 is provided on the side where the first U-shaped card 411 and the second U-shaped card 412 are close to each other.

[0071] The openings of the first U-shaped card 411 and the second U-shaped card 412 are arranged on the side close to each other, and the first U-shaped card 411 and the second U-shaped card 412 are connected by the connecting ear plate 413 to fix the conversion main keel and the conversion secondary keel;

[0072] In some possible implementations, in order to effectively achieve the installation of the blade keel 22 and the cladding keel 23;

[0073] There are multiple groups of blade keels 22, and multiple groups of slots are set at the bottom of each group of blade keels 22 along its long direction; the covering keel 23 is installed in the slot, and the bottom is coplanar with the bottom of the blade keel 22.

[0074] Furthermore, the distances between two adjacent groups of first screw rods 32 and two adjacent groups of second screw rods 42 are controlled within 900 mm.

[0075] A construction method based on the above-mentioned curved surface ceiling structure specifically comprises the following steps:

[0076] Step S1: Modeling a curved ceiling based on BIM technology, dividing the curved ceiling model into a number of installation units 2; and labeling the plurality of installation units 2;

[0077] Step S2: Scan the steel truss 100 using a 3D laser scanner, and obtain the actual 3D model and the actual spatial dimensions of the on-site building by processing the point cloud data;

[0078] Step S3: Compare the actual 3D model with the 3D model created using BIM, conduct in-depth design of the hanging point positions, and determine the positional relationships between the transfer floor keel 1 and the steel truss 100 and each installation unit 2;

[0079] The suspension point positions described here are the connection positions of the first screw rod 32 and the steel truss 100 , and the connection positions of the second screw rod 42 and the transfer layer keel 1 and the installation unit 2 .

[0080] Step S4: Process the blade keel 22 and the cladding keel 23 according to the three-dimensional model established by BIM; and assemble the installation unit 2; in each installation unit 2, the cladding keel 23 and the blade keel 22 are arranged in a crisscross pattern, with a spacing of 200 mm; the longitudinal direction of the blade keel 22 is preferably the same as the axial direction of the conversion main keel;

[0081] Step S5: Install the transfer layer keel 1; fix the first clamp 31 to the hanger next to the ball node of the steel truss 100, close to the ball node, and fix it with a stainless steel bolt; the first screw rod 32 is connected to the mounting plate 5 set on the first clamp 31, and its lower part is connected to the transfer layer main keel 21 using the second clamp 33; the transfer layer keel 1 (conversion main keel, conversion secondary keel) is a galvanized rectangular tube, and the conversion main keel and conversion secondary keel are arranged in a criss-cross pattern, and the two are connected using the third clamp 41.

[0082] Step S6: connecting the assembled installation units 2 to the transfer layer keels 1 respectively by hoisting;

[0083] Step S7: After all the installation units 2 are installed, the installation panels 5 and the finishing layer are constructed.

[0084] The present invention has a fast installation speed and only requires a small amount of measurement work during installation. Different areas can be installed at the same time according to the area division of the installation unit 2, and the installation speed is fast;

[0085] The present invention is easy to operate ， Reduce labor and construction costs. By dividing the installation unit 2, the installation is easier than the traditional installation process, greatly reducing labor and construction costs, and meeting the requirements of green construction.

[0086] The present invention saves materials and construction time. In the present invention, the blade keel 22 and the covering keel 23 are accurately cut based on BIM technology and are produced and processed in the factory. The conversion layer keel 1 and the blade keel 22 only need to be hoisted and installed on site. The hoisting process only requires less measurement and positioning, and can realize simultaneous construction in multiple areas, with high installation efficiency and shortened construction period.

[0087] The digital assisted installation of the present invention is convenient to install, easy to control, and has high construction quality and precision. The use of BIM technology to assist construction achieves high-precision and high-quality installation of large free-form surfaces.

[0088] The present invention is not limited to the aforementioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A curved ceiling structure based on BIM, characterized in that: It comprises a conversion layer keel connected to the bottom of the roof, a plurality of installation units connected to the bottom of the conversion layer keel and forming an arc-shaped curved surface at the bottom, a plurality of installation plates installed at the bottom of the installation units, and a finishing layer arranged at the bottom of the installation plates, wherein one side of the installation unit close to the conversion layer keel is a flat surface; Each group of the installation units includes multiple groups of main keels arranged in parallel and connected to the bottom of the transition layer keel, multiple groups of blade keels connected to the bottom of the main keel and arranged in parallel, and covering keels installed at the bottom of the blade keel and cooperating with the bottom of the blade keel to form an arc-shaped installation frame; the bottom of the arc-shaped installation frame is an arc-shaped curved surface, and the main keels in each group of the installation units are on the same horizontal plane.

2. The curved surface ceiling structure based on BIM according to claim 1, characterized in that: The side of the blade keel close to the conversion layer keel is a plane, and the bottoms of the blade keel and the covering keel are both arc-shaped.

3. The curved surface ceiling structure based on BIM according to claim 1, characterized in that: The transition layer keel is connected to the roof via a first connecting piece; the transition layer keel is connected to the main keel via a second connecting piece.

4. The curved surface ceiling structure based on BIM according to claim 3 is characterized in that: The first connecting member includes multiple groups of first hoops connected to the steel trusses in the roof, multiple groups of second hoops installed on the transfer layer keel, and multiple groups of first screw rods with one end screwed to the first hoop and the other end connected to the second hoop.

5. The curved surface ceiling structure based on BIM according to claim 3, characterized in that: The second connecting member includes a plurality of groups of third hoops connected to the conversion layer keel, and a plurality of groups of second screw rods, one end of which is screwed to the third hoops and the other end of which is connected to the main keel.

6. The curved ceiling structure based on BIM according to claim 5, characterized in that: The conversion layer keel comprises a plurality of groups of conversion main keels respectively connected to the second clamp and arranged in parallel, and a plurality of groups of conversion secondary keels located at the bottom of the conversion main keels; the conversion main keels are arranged in parallel with the roof, and the conversion secondary keels are multiple groups and are arranged at equal intervals along the long direction of the conversion main keels; The third clamp is connected to the conversion main keel and the conversion secondary keel respectively.

7. The curved surface ceiling structure based on BIM according to claim 5, characterized in that: The third clamp includes a first U-shaped card with an opening groove 1 and a second U-shaped card with an opening groove 2; the opening of the opening groove 1 is downward, and the opening of the opening groove 2 is upward, and a connecting ear plate is provided on the side where the first U-shaped card and the second U-shaped card are close to each other.

8. The curved surface ceiling structure based on BIM according to any one of claims 1 to 7, characterized in that: There are multiple groups of blade keels, and multiple groups of slots are arranged at the bottom of each group of blade keels along the long direction thereof; the covering keel is installed in the slot, and the bottom is coplanar with the bottom of the blade keel.

9. The curved surface ceiling structure based on BIM according to claim 8, characterized in that: The mounting plate is a silicon ceramic plate; the cross section of the blade keel is an L-shaped structure, including a flange plate connected to the main keel and arranged horizontally, and an arc-shaped plate connected to the flange plate and away from the flange plate.

10. A construction method of the arc-shaped curved ceiling structure according to any one of claims 1 to 9, characterized in that: The specific steps include: Step S1: Modeling the curved ceiling based on BIM technology, and dividing the curved ceiling model into several installation units; Step S2: Scan the steel truss using a 3D laser scanner, and obtain the actual 3D model and the actual spatial dimensions of the on-site building by processing the point cloud data; Step S3: Compare the actual 3D model with the 3D model established by BIM to determine the positional relationship between the transfer layer keel and the steel truss and each installation unit; Step S4: Process the blade keel and the cladding keel according to the three-dimensional model established by BIM; and assemble the installation unit; Step S5: installing the transfer layer keel; Step S6: connecting the assembled installation units to the transfer layer keels respectively by hoisting; Step S7: After all installation units are installed, the installation panels and finishing layers are constructed.

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