A construction method for installing a decorative panel on a large-span wall

Abstract

The application discloses a construction method for installing a decorative panel of a large-span wall body, comprising the following steps: establishing a decorative panel BIM model and performing joint cutting arrangement on the decorative panel BIM model, determining a batten arrangement drawing of a main batten and a secondary batten, determining an implantation position of a pre-embedded part and an installation position of a dry hanging assembly, installing the main batten, installing the secondary batten and installing the decorative panel. The BIM model of the wall body is established by using the BIM, the decorative panel BIM model is established according to the BIM model of the wall body, and the joint cutting arrangement is performed on the decorative panel BIM model, so that the standardization module segmentation of the decorative panel in a standard area can be performed, special segmentation of a special-shaped wall surface can be performed, and the construction efficiency is increased. The traditional frame operation welding mode is cancelled, the connection is performed through a bolt connection mode, the stability and the bearing capacity of the wall body structure are ensured, and the bolt connection mode is more flexible; if it is necessary to adjust the connection position or replace the parts, the bolt can be disassembled to complete the adjustment or replacement.

Description

Technical Field

[0001] This invention relates to the field of technical building construction, specifically to a construction method for installing decorative panels on large-span walls. Background Technology

[0002] Prefabricated buildings, with their green and environmentally friendly characteristics and reduced carbon emissions, are in line with my country's dual-carbon goals and ecological civilization construction. At the same time, the rapid development of urbanization has placed higher demands on my country's infrastructure construction.

[0003] In the decoration and renovation project of the Capital Museum, the interior wall veneer panel installation was a large-scale project with high veneer walls, exceeding 14 meters in height. The top of the three-layer veneer was made of irregularly shaped panels. The museum required constant temperature and humidity, and the veneer panels had to be free from deformation during use. The large area of ​​veneer panels required flatness. Ensuring the veneer panels were aesthetically pleasing, reasonably installed, convenient, and efficient, as well as ensuring accurate panel dimensions and clear panel classification in different areas, were the challenges of the project. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention designs a construction method for installing decorative panels on large-span walls, comprising the following steps: Establishing a BIM model of the wall based on its structure, and establishing a decorative panel BIM model outside the wall BIM model, and arranging the joints in the decorative panel BIM model; determining the keel layout diagram of the main keel and secondary keel based on the pre-arranged decorative panel BIM model, and determining the implantation positions of the embedded parts and the installation positions of the dry-hanging components; installing the main keel: first verifying the actual walls, columns, and columns on site... Check whether the actual dimensions of the reserved openings and fire hydrant boxes are consistent with the BIM model. If there is a deviation, make adjustments. After verification, draw the position lines of the main keel and insert the embedded parts into the wall. Fix the main keel with the embedded parts. Install the secondary keel: After the main keel is installed, draw the position lines of the secondary keel according to the keel layout diagram and install the secondary keel on the main keel. Install the decorative panel: Install the dry-hanging components at the installation positions of the secondary keel dry-hanging components and the decorative panel dry-hanging components respectively, and install the decorative panel on the secondary keel through the dry-hanging components.

[0005] Preferably, the decorative panel BIM model is cut and arranged, including the following steps: First, the entire decorative panel BIM model is divided into a standardized arrangement area and an irregular arrangement area. The standardized arrangement area is the decorative panel BIM model outside the flat wall surface, and the irregular arrangement area is the decorative panel BIM model outside the wall, column, reserved opening, fire hydrant box, and top curved wall surface. The decorative panel BIM model in the standardized arrangement area is divided into structures of the same specifications. The decorative panel BIM model in the irregular arrangement area is divided into structures whose longitudinal joints overlap with the longitudinal joints of the decorative panel BIM model in the standardized arrangement area.

[0006] Preferably, the decorative panel includes a magnesium oxide board and natural wood veneer pasted on both sides of the magnesium oxide board, and one side of the decorative panel has a concave structure and the other side has a convex structure that matches the concave structure, wherein the concave structure and the convex structure are arranged along the vertical direction of the decorative panel.

[0007] Preferably, the installation of the main keel by pre-embedded parts includes the following steps: installing the first connector on the wall through the pre-embedded parts, wherein a pad is provided between the wall and the first connector; installing the main keel on the first connector through the first connecting bolt; wherein a pad, the first connector and the first connecting bolt are provided between the pre-embedded parts and the main keel, the number of first connectors is two, the two first connectors are respectively provided on both sides of the main keel, and the first connectors are connected to the main keel through the first connecting bolts; the first connector is installed on the wall through the pre-embedded parts; the pad is provided between the wall and the first connector.

[0008] Preferably, installing the secondary keel on the main keel includes the following steps: installing the second connector on the main keel; installing the secondary keel on the second connector using a second connecting bolt; wherein, a second connector and a second connecting bolt are provided between the main keel and the secondary keel; the second connector is installed on the main keel; and the secondary keel is installed on the second connector using a second connecting bolt.

[0009] Preferably, dry-hanging components are installed at the installation positions of the secondary keel dry-hanging components and the decorative panel dry-hanging components, respectively, including the following steps: installing the first dry-hanging component on the secondary keel; installing the second dry-hanging component on the decorative panel; and installing the decorative panel on the secondary keel via the dry-hanging components, including the following steps: installing the second dry-hanging component on the first dry-hanging component; wherein, the dry-hanging component includes: a first dry-hanging component and a second dry-hanging component; the first dry-hanging component is installed on the secondary keel; the second dry-hanging component is installed on the decorative panel; and the second dry-hanging component is installed on the first dry-hanging component.

[0010] Compared with the closest prior art, the beneficial effects of the present invention are as follows:

[0011] 1. This invention utilizes BIM to create a BIM model of the wall, and based on the wall BIM model, creates a BIM model of the decorative panel, and performs slit arrangement on the decorative panel BIM model. This allows for standardized module division of the decorative panel in standard areas and special division of irregular wall surfaces, increasing construction efficiency.

[0012] 2. This invention divides the entire decorative panel BIM model into standardized layout areas and irregular layout areas, which facilitates its segmentation and factory processing.

[0013] 3. Most of the dry-hanging methods of this invention eliminate the traditional frame welding method and connect the wall structure by bolting, ensuring the stability and load-bearing capacity of the wall structure. The bolting method is more flexible and can be adjusted and repaired. If it is necessary to adjust the connection position or replace the parts, it can be done simply by removing the bolts without having a significant impact on the overall structure. The bolting method can be disassembled and reassembled multiple times, which is very beneficial for later maintenance, renovation or demolition projects, saving material costs and reducing damage to the wall.

[0014] 4. This invention improves the overall performance of the wood veneer by designing concave and convex structures on the side openings of the decorative panel, preventing deformation and ensuring the flatness of the decorative panel. Attached Figure Description

[0015] Figure 1 This is a schematic flowchart of the construction method for installing decorative panels on large-span walls according to the present invention.

[0016] Figure 2 This is a schematic diagram showing the distribution of the standardized and irregularly shaped layout areas of this invention.

[0017] Figure 3 This is a side view of the dry-hanging structure of the present invention.

[0018] Figure 4 This is a top view schematic diagram of the dry-hanging structure of the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of the decorative panel of the present invention.

[0020] Figure label:

[0021] A-Standardized layout area, B-Irregular layout area, 1-Wall, 2-Embedded parts, 3-Plate, 4-First connector, 5-First connecting bolt, 6-Main keel, 7-Second connector, 8-Second connecting bolt, 9-Secondary keel, 10-First dry-hanging component, 11-Second dry-hanging component, 12-Decorative panel. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] Example 1

[0024] like Figures 1-5 As shown, this invention provides a construction method for installing decorative panels on a large-span wall, including the following steps: Establishing a BIM model of the wall 1 to which the decorative panels 12 are to be installed based on its structure, and establishing a decorative panel BIM model outside the wall BIM model, and cutting and arranging the decorative panel BIM model; determining the keel layout diagram of the main keel 6 and secondary keel 9 based on the cut and arranged decorative panel BIM model, and determining the implantation position of the embedded parts 2 and the installation position of the dry-hanging components; installing the main keel 6: first verifying the actual walls, columns, reserved openings, and fire hydrants on site. Check if the actual dimensions of the box match the BIM model. If there is a deviation, make adjustments. After verification, draw the position lines of the main keel and embed the pre-embedded parts 2 into the wall. Fix the main keel 6 through the pre-embedded parts 2. Install the secondary keel 9: After the main keel 6 is installed, draw the position lines of the secondary keel according to the keel layout diagram and install the secondary keel 9 on the main keel 6. Install the decorative panel 12: Install the dry-hanging components at the installation positions of the dry-hanging components of the secondary keel 9 and the dry-hanging components of the decorative panel 12 respectively, and install the decorative panel 12 on the secondary keel 9 through the dry-hanging components.

[0025] In a preferred embodiment, the decorative panel BIM model is cut and arranged, including the following steps: First, the entire decorative panel BIM model is divided into a standardized arrangement area A and an irregular arrangement area B, wherein the standardized arrangement area A is the decorative panel BIM model outside the flat wall surface, and the irregular arrangement area B is the decorative panel BIM model outside the wall, column, reserved opening, fire hydrant box, and top curved wall surface; the decorative panel BIM model in the standardized arrangement area A is divided into structures of the same specifications; the decorative panel BIM model in the irregular arrangement area B is divided into structures whose longitudinal seams overlap with the longitudinal seams of the decorative panel BIM model in the standardized arrangement area A.

[0026] In a preferred embodiment, the decorative panel includes a magnesium oxide board and natural wood veneer pasted on both sides of the magnesium oxide board. One side of the decorative panel has a concave structure, and the other side has a convex structure that matches the concave structure. The concave structure and the convex structure are arranged along the vertical direction of the decorative panel.

[0027] In a preferred embodiment, the fixed installation of the main keel 6 via the embedded part 2 includes the following steps: installing the first connecting part 4 on the wall 1 via the embedded part 2, wherein a pad 3 is provided between the wall 1 and the first connecting part 4; installing the main keel 6 on the first connecting part 4 via the first connecting bolt 5; wherein the pad 3, the first connecting part 4 and the first connecting bolt 5 are provided between the embedded part 2 and the main keel 6, the number of first connecting parts 4 is two, the two first connecting parts 4 are respectively provided on both sides of the main keel 6, and the first connecting parts 4 are connected to the main keel 6 via the first connecting bolt 5; the first connecting part 4 is installed on the wall 1 via the embedded part 2; the pad 3 is provided between the wall 1 and the first connecting part 4.

[0028] In a preferred embodiment, installing the secondary keel 9 onto the main keel 6 includes the following steps: installing the second connector 7 onto the main keel 6; installing the secondary keel 9 onto the second connector 7 via a second connecting bolt 8; wherein, a second connector 7 and a second connecting bolt 8 are provided between the main keel 6 and the secondary keel 9; the second connector 7 is installed onto the main keel 6; and the secondary keel 9 is installed onto the second connector 7 via the second connecting bolt 8.

[0029] In a preferred embodiment, dry-hanging components are installed at the installation positions of the secondary keel 9 and the decorative panel 12, respectively, including the following steps: installing a first dry-hanging component 10 on the secondary keel 9; installing a second dry-hanging component 11 on the decorative panel 12; and installing the decorative panel 12 on the secondary keel 9 via the dry-hanging components, including the following steps: installing the second dry-hanging component 11 on the first dry-hanging component 10; wherein, the dry-hanging components include: a first dry-hanging component 10 and a second dry-hanging component 11; the first dry-hanging component 10 is installed on the secondary keel 9; the second dry-hanging component 11 is installed on the decorative panel 12; and the second dry-hanging component 11 is installed on the first dry-hanging component 10.

[0030] Example 2

[0031] The specific construction work in the decoration and renovation project of the Capital Museum includes:

[0032] Selection of decorative panels and refinement of the structure:

[0033] For the base layer material, magnesium oxide board is chosen. Common base layer materials on the market include metal sheets, cement pressure boards, and magnesium oxide boards. Among these, metal sheets and cement pressure boards are heavy and inconvenient to install, while magnesium oxide boards are lightweight, easy to handle and cut, and can be installed using screws or adhesives. Furthermore, magnesium oxide boards have good sound and heat insulation properties, effectively reducing noise transmission and heat loss, all of which meet the requirements. Therefore, fireproof wood veneer panels are made with magnesium oxide boards as the base layer, with natural wood veneer applied to both sides. Due to the large area of ​​the boards, ensuring a flat, non-warping surface and preventing mold growth during use is one of the key factors for the success of this product and the project. Additionally, in museums, the long-term use of air conditioning means that the ambient temperature and humidity have a significant impact on the boards. In order to ensure the processing quality of fireproof decorative panels and prevent them from deteriorating or deforming during use, and to achieve the ideal decorative effect, the fireproof decorative panels used in this project were treated in the following aspects during the production process: (1) The moisture content of magnesium oxide boards is generally low, with only 2%-3% in the surface layer and less than 5% in the core layer. When processed or stored in an environment with high relative humidity, they will inevitably absorb moisture. If there are problems such as uneven moisture content in the board, the board will easily warp and deform. To prevent deformation, magnesium oxide boards should be conditioned before use to make their moisture content uniform. (2) Density control of magnesium oxide boards: The low density of fireproof and flame-retardant wood is easy to cause the processing surface to be rough and easy to absorb moisture and deform. At the same time, the density distribution in the thickness direction should be uniform, with an average density of about 800 kg / m³. To prevent deformation after the wood veneer is installed, a locking device is designed for the wood veneer. During the installation process, the two panels are tightly joined together by locking the edges to form a whole. At the same time, a 5mm wide vertical process seam is formed at the splicing joint, and the horizontal splicing is tight without leaving any gaps. The flatness of the joint between the upper and lower panels is adjusted by installing quick-install connectors (alternating between positive and negative installation).

[0034] Further details on the installation structure:

[0035] The structural walls of the East Wing of the Capital Museum are a secondary structure. Due to the use of panel construction on-site, embedded parts were required after installation. During the design phase, the layout of these embedded parts was determined using the interior design drawings. The embedded parts are made of 200×200×5 hot-dip galvanized steel sheets, and the connectors are made of M10 hot-dip galvanized threaded wire. The corners are concrete structures, and the embedded parts there are also installed later, using M12 expansion bolts and 200×200×5 hot-dip galvanized steel sheets.

[0036] The embedded parts are connected to the wooden surface using square tubes. Vertically, 50×100×4 hot-dip galvanized square tubes are used with a diameter of <1200 mm. The vertical square tubes are connected to the embedded parts using 100×63×5 hot-dip galvanized connectors. Horizontally, 40×40×3 hot-dip galvanized square tubes are used. 40×40×4 hot-dip galvanized angle brackets are used to connect the horizontal square tubes to the vertical square tubes. Special hangers are used to connect the horizontal square tubes to the wooden veneer.

[0037] Compared to traditional connection methods, traditional wall steel frame installation, after the embedded plates are installed, involves welding the vertical keels to the embedded plates and the horizontal keels, which usually requires more time for construction. The welding process requires steps such as installing, aligning, welding, and adjusting the embedded parts, making adjustments and repairs relatively difficult.

[0038] The walls of the East Wing of the Capital Museum are connected by dry-hanging bolts. After the embedded plates are installed, the vertical keel is made of 50×100×4 square steel and connected by M10 bolts through 100×63×5 angle steel connectors. The wood veneer is then fixed with special hangers using screws. The special hangers are fixed to the vertical keel with 40×40×4 hot-dip galvanized square steel using screws.

[0039] The walls of the lecture hall and entrance hall of the East Branch of the Capital Museum are covered with perforated sound-absorbing panels, covering an area of ​​over 420 square meters, a height of over 10 meters, and a width of over 21 meters on one side. Each sound-absorbing panel is 3 meters wide and ranges in height from 3 to 9 meters. Embedded components were installed in the secondary structure of the walls using M12 through-bolts and 200×250×6 hot-dip galvanized steel sheets. Vertically, 20×40×3 hot-dip galvanized square tubing (<1000mm) is used to connect to the embedded components, with a height of <600mm.

[0040] The horizontal keel is made of 40×40×4 hot-dip galvanized square steel. According to the horizontal keel position line, the L50×50×4 hot-dip galvanized angle brackets are welded and fixed to the main keel. The long bolt holes of the angle brackets are on the top. The horizontal keel and the angle brackets are fixed with φ8 galvanized bolts. The angle brackets and the main keel are fixed with full welding on all four sides. The welding area is cleaned of welding slag and fully coated with anti-rust paint.

[0041] The horizontal spacing of the horizontal keel is ≤600. After adjusting the verticality, horizontality or fan-shaped curvature of the keel according to the facade style, the through bolts are fixed firmly.

[0042] Aluminum alloy keel is installed on horizontal steel keel, running the entire length of the frame. The vertical spacing is consistent with the horizontal keel, and it is fixed with dovetail screws at intervals not exceeding 300mm. The aluminum alloy keel must be horizontal, and each layer of keel on the same panel or wall must be vertical and on the same plane. After the frame keel is in place, the matching brackets at the same location are fixed to the back of the decorative panel according to the dimensions, using screws. The screw length is determined based on the panel thickness and the bracket thickness. For wood veneer, metal hanging strips are used. The entire metal hanging strip is installed to the square steel keel using hexagonal dovetail screws, one dovetail screw every 150-200mm; vertically spaced 600mm apart. Adhesive strips are inserted into the grooves of the metal hanging strips.

[0043] The metal hangers are screwed onto the back of the magnesium oxide board using wood screws (all four screws on each hanger must be screwed in). The vertical spacing is 600mm, the horizontal spacing is 300mm, and the outermost hanger is 50mm from the edge. These dimensions can be slightly adjusted according to the actual board width. Before fixing the metal hangers to the magnesium oxide board, apply structural adhesive to the back of the hangers.

[0044] Standardized layout of wood veneer:

[0045] The museum's prefabricated wood veneer public areas are large and tall. By using BIM technology to simulate and refine the layout of the detailed drawings, the bottom is controlled to be flush according to the elevation. The irregularly shaped panels on the top are modeled and arranged using BIM, and the large veneer panels are cut and arranged to achieve standardization. The manufacturer then places orders for cutting and producing 17,000 panels based on the BIM model.

[0046] The second-floor wood veneer wall is 10m high with a 100mm high baseboard. Based on the detailed wall elevation drawings, the wall surface was standardized, and individual wood veneer panels were cut into two sizes: 1000mm wide x 2900mm high and 1000mm wide x 2000mm high. These panels were then installed using a staggered joint method. The fire hydrants on the wood veneer wall are concealed doors, and were further detailed according to the drawings to be 1080mm x 2000mm.

[0047] The wall height of the three-story exhibition hall is 17.2m. Through the refinement of the wall elevation drawings, the wall surface is standardized and the individual wood veneer panels are cut into two specifications: 1000mm wide × 2400mm high and irregular shapes. The wall area of ​​a single exhibition hall is approximately 1900㎡, and the area of ​​the irregular shapes is 252㎡. The standardized production rate of the wood veneer panels is (1900-252)÷1900×100%=86.73%.

[0048] Prefabricated construction of wood veneer:

[0049] Initial layout: Wood veneer installation is mainly concentrated on the first, second, and third floor exhibition areas and public corridors, with wall heights reaching 12m. The floors are stone, and the ceilings are aluminum mesh suspended ceilings. Wall elevation control is based on the axis lines of each area, with horizontal lines marked on the structural walls. Markings for the installation of fire-resistant wood veneer panels are accurately drawn on the walls according to the interior wall decoration design drawings. On-site, based on the pre-reserved axis lines and level lines, the 1-meter lines for decoration and control lines for walls and floors in each area are derived. The actual dimensions of the actual walls, columns, reserved openings, fire hydrant boxes, etc., are measured based on the axis lines, level lines, and control lines. These actual dimensions are then entered into the CAD construction drawings for verification, checking whether the positions of the walls and openings on-site are consistent with the decoration construction drawings, and whether the pre-reserved dimensions on-site meet the installation requirements. Any deviations are promptly communicated and adjusted with the design team. After verification, the wall alignment lines, embedded plate position lines, and vertical keel position lines are derived based on the actual thickness of the steel frame base and surface layer.

[0050] Keel Positioning: Determine the frame position according to the control line, and strictly control the frame position deviation: Fireproof wood veneer panels are mainly fixed by the frame, so the frame installation must be guaranteed to be firm. Use expansion bolts to fix and connect the steel plates, weld the main keel to the connecting steel plate, and weld the secondary keel to form a whole with the main keel. Note that before the installation of the hangers, the frame position must be fully checked to ensure accuracy and firmness of the welding, and the weld quality must be checked: During installation, a spirit level must be used to ensure that the keel is horizontal or vertical. Keel Rust Prevention: @ After the galvanized layer of the channel steel main keel, embedded parts, and various galvanized angle steel is damaged by welding, apply two coats of anti-rust paint (including touch-up areas) for rust prevention treatment, and control the interval between the first and second coats to be no less than 12 hours. 2. The steel must be brought to the site with moisture-proof measures, and rust prevention operations must be carried out after removing dust and dirt. 3. No anti-rust paint should be missed, especially the areas reserved for delayed painting before welding, which must be painted at least twice after welding. Galvanized keel is preferred.

[0051] Secondary layout: After the main keel is installed, the horizontal keel position lines are placed on the vertical keel facade according to the keel layout drawing to ensure accurate positioning of the corner brackets. For the auditorium walls, elevation control lines are drawn based on the elevation control points. During construction, elevation control of the floor bonding layer, surface layer, and ceiling is ensured. Based on the elevation control lines of each area, the mechanical and electrical systems are checked for any pipelines that might affect the ceiling installation. Through detailed design in the early stages, discrepancies between drawings and the existing conditions are resolved, achieving zero-deviation alignment between layout refinement, order placement, and on-site installation, minimizing product wastage.

[0052] Wood veneer installation: After the wall panels in each area are laid out, they are numbered according to different specifications and sizes or different drilling positions, and the manufacturer processes them according to the dimensions marked on the numbers. Mobile scissor lifts are used on-site for high-altitude operations, allowing multiple points of work such as ceiling installation, wall frame base installation, and wall panel installation to be carried out simultaneously, thereby improving the overall progress and construction efficiency of high-altitude operations.

[0053] To ensure construction progress, the fabrication of the prefabricated steel frame for the wall panels and the external processing of the wood veneer panels were carried out simultaneously, necessitating the accuracy of the finished surface control lines. Therefore, control lines for each area were derived on-site based on the pre-reserved axis lines on the structural floor. The dimensions of the actual walls were measured according to these control lines, and the control lines and wall dimensions were then drawn onto the floor plan. The distance between the control lines and the finished surface control lines was marked on the electronic floor plan. These dimensions were then verified on-site using chalk lines. After confirmation, the layout was confirmed, and the steel frame was fabricated on-site according to the layout plan. Off-site, the external processing of the tiles was carried out based on the layout plan.

[0054] Aluminum alloy keel is installed on horizontal steel keel, running the entire length of the frame. The vertical spacing is consistent with the horizontal keel, and it is fixed with dovetail screws at intervals not exceeding 300mm. The aluminum alloy keel must be horizontal, and all layers of keel on the same panel or wall must be vertical and on the same plane. After the frame keel is in place, the matching brackets at the same location are fixed to the back of the decorative panel according to the dimensions, using wood screws. The screw length is determined based on the panel thickness and the bracket thickness, ensuring that the screws do not penetrate or lift the surface layer, causing bulges.

[0055] Following the principle of bottom-up installation, starting from the edges of door and window openings and moving left and right, when installing wood veneer panels horizontally, the hanging bracket opening should face downwards. For vertical installation, hang the back brackets on the horizontal joists, ensuring the panels are level and vertical during installation. Horizontal joints between panels should be tight, with a 5mm vertical gap reserved, containing matching color insert strips. Wood veneer panel installation should be carried out according to the elevation layout drawings, ensuring accurate placement of different panel types. When encountering grooves, boxes, or openings, the panel openings must be accurately, neatly, and aesthetically pleasingly cut.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of the claims of the pending application of the present invention.

Claims

1. A construction method for installing decorative panels on a large-span wall, characterized in that, Includes the following steps: Based on the structure of the wall (1) to which the decorative panel (12) is to be installed, a BIM model of the wall is established, and a BIM model of the decorative panel is established on the outside of the wall BIM model. The decorative panel BIM model is then cut and arranged, and the cut and arrangement includes the following steps: First, the entire decorative panel BIM model is divided into a standardized layout area (A) and an irregular layout area (B). The standardized layout area (A) is the decorative panel BIM model outside the flat wall surface, and the irregular layout area (B) is the decorative panel BIM model outside the wall, column, reserved opening, fire hydrant box and top curved wall surface. The decorative panel BIM model in the standardized layout area (A) is divided into structures of the same specifications; The decorative panel BIM model in the irregular layout area (B) is divided into a structure in which the longitudinal seams overlap with the longitudinal seams of the decorative panel BIM model in the standardized layout area (A); Based on the BIM model of the cut and arranged decorative panels, determine the keel layout diagram of the main keel (6) and the secondary keel (9), and determine the implantation position of the embedded part (2) and the installation position of the dry hanging component. Install the main keel (6): First check whether the actual dimensions of the actual walls, columns, reserved openings and fire hydrant boxes on site are consistent with the BIM model. If there is any deviation, make adjustments. After verifying that there are no errors, draw the position line of the main keel and insert the embedded parts (2) into the wall. Then fix the main keel (6) through the embedded parts (2). Install the secondary keel (9): After the main keel (6) is installed, draw the position line of the secondary keel according to the keel layout diagram, and install the secondary keel (9) on the main keel (6); Install decorative panel (12): Install dry-hanging components at the installation positions of the dry-hanging components of the secondary keel (9) and the dry-hanging components of the decorative panel (12), and install the decorative panel (12) on the secondary keel (9) through the dry-hanging components.

2. The construction method for installing decorative panels on a large-span wall as described in claim 1, characterized in that, The decorative panel includes a magnesium oxide board and natural wood veneer pasted on both sides of the magnesium oxide board. One side of the decorative panel has a concave structure, and the other side has a convex structure that matches the concave structure. The concave structure and the convex structure are arranged along the vertical direction of the decorative panel.

3. The construction method for installing decorative panels on a large-span wall as described in claim 1, characterized in that, The main keel (6) is fixedly installed through the pre-embedded part (2) including the following steps: The first connector (4) is installed on the wall (1) through the embedded part (2), wherein a pad (3) is provided between the wall (1) and the first connector (4). The main keel (6) is installed on the first connector (4) by the first connecting bolt (5); Among them, a pad (3), a first connector (4) and a first connecting bolt (5) are provided between the embedded part (2) and the main keel (6). There are two first connectors (4), which are respectively provided on both sides of the main keel (6) and are connected to the main keel (6) by the first connecting bolt (5). The first connector (4) is installed on the wall (1) through the embedded part (2). The pad (3) is provided between the wall (1) and the first connector (4).

4. The construction method for installing decorative panels on a large-span wall as described in claim 1, characterized in that, Installing the secondary keel (9) onto the main keel (6) includes the following steps: Install the second connector (7) onto the main keel (6); Install the secondary keel (9) onto the second connector (7) using the second connecting bolt (8); A second connector (7) and a second connecting bolt (8) are provided between the main keel (6) and the secondary keel (9); the second connector (7) is installed on the main keel (6); the secondary keel (9) is installed on the second connector (7) by the second connecting bolt (8).

5. The construction method for installing decorative panels on a large-span wall as described in claim 1, characterized in that, Install dry-hanging components at the installation positions of the secondary keel (9) dry-hanging components and the decorative panel (12) dry-hanging components, respectively, including the following steps: Install the first dry-hanging component (10) on the secondary keel (9); Install the second dry-hanging component (11) onto the decorative panel (12); Installing the decorative panel (12) onto the secondary keel (9) via a dry-hanging assembly includes the following steps: Install the second dry-hanging component (11) onto the first dry-hanging component (10); The dry-hanging assembly includes: a first dry-hanging component (10) and a second dry-hanging component (11); the first dry-hanging component (10) is installed on the secondary keel (9); the second dry-hanging component (11) is installed on the decorative panel (12); and the second dry-hanging component (11) is installed on the first dry-hanging component (10).

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