Construction method of fabricated magnesium wing composite wallboard system

Abstract

The application discloses a construction method of an assembled magnesium wing composite wallboard system, which comprises a main body structure, a hoisting assembly, a magnesium wing composite wallboard, a ground beam and a ground finish surface; the construction comprises the following steps: step one, magnesium wing composite wallboard processing; step two, construction pretreatment; step three, ground beam construction; step four, remaining ground finish surface construction; step five, connecting piece installation; step six, hoisting assembly installation; step seven, magnesium wing composite wallboard hoisting; step eight, magnesium wing composite wallboard fine adjustment; and step nine, system overall detection. The application has high construction efficiency, multiple performances of wallboard material, high wallboard connection stability and improved aesthetics of the concealed hoisting connection component.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and specifically to a construction method for a prefabricated magnesium wing composite wall panel system. Background Technology

[0002] Prefabricated construction is the core direction of building industrialization. Wall panels, as core enclosure and partition components, directly affect construction efficiency, structural safety, and service life through their performance and construction techniques. Currently, existing prefabricated wall panel systems face the following technical challenges: (1) Most existing prefabricated wall panels use a single material, which has the problem of poor performance balance: if the structural strength is emphasized, the self-weight is too large and the thermal insulation and sound insulation are insufficient; if the lightweight insulation is emphasized, the load-bearing capacity is sacrificed, and the waterproof and anti-corrosion performance is generally weak, which can easily lead to cracking, water seepage and other problems, thus shortening the service life. (2) At the construction level, existing wall panels mostly adopt the on-site splicing + secondary grouting mode, which involves a large amount of wet work, complicated procedures, low construction efficiency, and is easily affected by the environment, resulting in quality hazards such as incomplete grouting and splicing gaps. (3) The connection nodes between the wall panel and the main structure and the ground base are not designed properly, and the connection stability is insufficient. Long-term use may lead to safety risks such as loosening and displacement. (4) Magnesium-based cementitious materials have advantages such as lightweight, high strength, environmental protection and heat insulation, but their integration in the existing wall panel system is low, the material value is not fully utilized, and there is a lack of standardized construction process for magnesium-based composite wall panels, making it difficult to realize the advantages of industrial assembly.

[0003] Therefore, there is an urgent need for a prefabricated wall panel system and construction method that can take into account multiple performance aspects, simplify the construction process, and improve connection stability, so as to solve the shortcomings of existing technologies and promote the efficient and high-quality development of prefabricated buildings. Summary of the Invention

[0004] The purpose of this invention is to provide a construction method for a prefabricated magnesium wing composite wall panel system, in order to solve the technical problems of low efficiency and low quality in the construction of existing prefabricated wall panels.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A prefabricated magnesium wing composite wall panel system includes a main structure, hoisting components, magnesium wing composite wall panels, ground beams, and finished floor surface; The construction includes the following steps: Step 1: Magnesium-coated composite wall panel processing: fix the first wire mesh longitudinally inside the frame, and fix the second wire mesh symmetrically on both sides of the frame; fill the gap between the first wire mesh and the two second wire meshes with concrete to form a cement mortar layer; apply the plaster layer and waterproof layer on the outside of the second wire mesh in sequence; after the waterproof layer has cured, use magnesium-based cementitious material to attach the decorative panel. Step 2, Construction Pre-treatment: Clean and level the ground, and mark the outline of the ground beam construction; Step 3, ground beam construction: First, erect the steel frame and firmly connect the steel frame to the steel bars embedded in the ground. Then, pre-embed connecting angle steel on the top surface of the ground beam pouring area. Pour concrete to build the ground beam and simultaneously pour the first mortar leveling layer. After pouring, keep it moist and curing. Step 4: Finishing the remaining ground surfaces: Apply the first waterproof coating, the second mortar leveling layer, and the second waterproof coating in sequence on the first mortar leveling layer, ensuring that both waterproof coatings extend to the top of the ground beam; finally, lay the mortar protective layer and stone. Step 5: Install the connectors on top of the connecting angle steel using fasteners; Step 6: Installation of hoisting components: Fix two oppositely positioned adapters at the designated locations on the main structure, and securely connect one end of the hoisting rod to the adapter on the side of the main structure; Step 7, hoisting of magnesium wing composite wall panels: Hoist the magnesium wing composite wall panels to the construction position. First, insert the bottom of the frame into the groove of the connector to complete the initial positioning. Then, adjust the verticality and flatness of the magnesium wing composite wall panels. At the same time, firmly connect the other end of the hoisting rod to the top of the frame through the adapter to complete the double fixation of the bottom of the magnesium wing composite wall panels and the top hoisting. Step 8: Fine-tuning of the magnesium wing composite wall panel: Fine-tune the top elevation of the magnesium wing composite wall panel to ensure a seamless connection between the top of the magnesium wing composite wall panel and the edge of the ceiling; Step 9: Comprehensive system testing.

[0006] Preferably, in step one, multiple transverse square steel bars and longitudinal square steel bars are assembled into a grid-like frame, the connecting nodes are treated with rust prevention, and the flatness deviation of the frame is tested to be ≤3mm / 2m.

[0007] Preferably, a fiberglass mesh anti-crack layer is added between the waterproof layer and the decorative panel, wherein the fiberglass mesh is pre-impregnated with a magnesium-based cementitious material.

[0008] Preferably, in step five, the connector is a U-shaped long strip channel structure, and the width of the channel is 1-2 mm larger than the outer diameter of the transverse square steel.

[0009] Preferably, the surface of the connector is hot-dip galvanized for rust prevention. Preferably, in step six, the adapter is an angle steel and is installed on the main structure by expansion bolts.

[0010] Preferably, an elongated hole is provided on the adapter, and the hanger is connected to the elongated hole by fasteners to accommodate slight changes in the size of the magnesium wing composite plate.

[0011] Preferably, in step seven, an elastic buffer pad is provided at the contact area between the bottom of the skeleton and the groove of the connector, and the surface of the elastic buffer pad is treated with anti-slip serrations with a serration depth of 0.5 to 1 mm.

[0012] Preferably, in step eight, the sealant layer is flush with the surrounding surface layer to form an integrated sealed waterproof barrier.

[0013] Preferably, in step nine, laser three-dimensional scanning technology is used to detect the overall verticality and flatness of the magnesium wing composite wall panel (3), the scanning point cloud density is ≥50 points / ㎡, and ultrasonic flaw detection is performed on all metal connection nodes, with the coupling degree of the flaw detection surface being ≥98%.

[0014] In this invention, the composite processing of the skeleton, double-layer steel wire mesh, cement mortar layer and magnesium-based cementitious material decorative panel in step one takes into account the structural load-bearing capacity, thermal insulation, sound insulation and waterproof and corrosion-resistant performance, avoids the problem of easy cracking and water seepage of single material wall panels, extends the service life of wall panels, gives full play to the advantages of magnesium-based materials, realizes the efficient use of building materials, and conforms to the concept of green building.

[0015] Through steps two to four of ground pretreatment, ground beam pouring, and double-layer waterproof floor construction, a solid foundation for wall panel installation is established, solving the problems of weak waterproofing and loose connections in the existing ground base, thus ensuring stable wall panel installation.

[0016] By installing the connectors and hoisting components in steps five to seven, and double fixing the wall panels, standardized prefabricated wall panels are used, reducing on-site wet work, simplifying procedures, shortening the construction cycle, solving the problems of low construction efficiency and many hidden dangers of wet work, and highlighting the advantages of industrialized assembly.

[0017] Through the comprehensive inspection in step nine, which involves fine-tuning the wall panels in step eight, we ensure that the verticality and flatness of the wall panels meet the standards and that they are seamlessly connected to the ceiling. At the same time, through the coordinated use of adapters, connectors, and connecting angle steel, we optimize the connection nodes, solve the safety risks of insufficient stability and easy loosening and displacement of existing wall panel connections, and ensure the safety of the overall building structure.

[0018] In summary, this invention effectively solves the technical problems of low efficiency and low quality in the construction of existing prefabricated wall panels. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from one perspective; Figure 3 This is another perspective view of the overall structure of the present invention; In the diagram: 1. Main structure; 2. Lifting assembly; 3. Magnesium phosphate composite wall panel; 4. Ground beam; 5. Finished floor surface; 6. Connector; 7. Ceiling; 8. Floor; 9. Connecting angle steel; 21. Hanger; 22. Adapter; 31. Frame; 32. First wire mesh; 33. Second wire mesh; 34. Cement mortar layer; 35. Plaster layer; 36. Waterproof layer; 37. Decorative panel; 51. First mortar leveling layer; 52. First waterproof coating; 53. Second mortar leveling layer; 54. Second waterproof coating; 55. Mortar protective layer; 56. Stone; 311. Horizontal square steel; 312. Longitudinal square steel. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings: like Figures 1 to 3 The illustrated prefabricated magnesium wing composite wall panel system includes a main structure 1, a hoisting assembly 2, magnesium wing composite wall panels 3, a ground beam 4, and a finished floor surface 5. The ground beam 4 is located at the finished floor surface 5. Magnesium wing composite wall panels 3 are mounted on the top of the ground beam 4 via connectors 6. The top of the magnesium wing composite wall panels 3 is hoisted to the main structure 1 via the hoisting assembly 2. The top of the magnesium wing composite wall panels 3 is connected to the edge of the ceiling 7, thus concealing the hoisting assembly 2. With no exposed components, this system balances structural reliability with the overall aesthetic appeal of the building.

[0021] The hoisting assembly 2 includes a lifting rod 21 and two adapters 22. The two adapters 22 are positioned opposite each other and mounted on the main structure 1. A lifting rod 21 is connected to each adapter 22, and the lifting rod 21 is also connected to the top of the frame 31 via the adapters 22. In this example, the adapter 22 is an angle steel piece, mounted on the main structure 1 using expansion bolts. In a preferred embodiment, the adapter 22 has an elongated hole, and the lifting rod 21 is connected to the elongated hole via fasteners to accommodate slight dimensional changes in the magnesium composite plate 3, improving versatility. The hoisting assembly 2 is hot-dip galvanized for rust prevention.

[0022] Magnesium-ion composite wall panel 3 is a composite structure that integrates multiple properties such as structural support, fire resistance, thermal insulation, sound insulation, and waterproofing. This reduces construction procedures and costs. Furthermore, as an independent unit, it can be disassembled and replaced at any time without damaging the main structure, thus reducing post-construction maintenance costs. Magnesium-ion composite wall panel 3 includes a frame 31, a first wire mesh 32, a second wire mesh 33, a cement mortar layer 34, a plaster layer 35, a waterproof layer 36, and a decorative panel 37. The frame 31 is a grid-like frame structure composed of multiple horizontal square steel bars 311 and multiple vertical square steel bars 312 welded together, providing strong overall load-bearing capacity and structural stability. The connector 6 is a U-shaped long channel structure adapted to the horizontal square steel bars 311, installed on the top of the connecting angle steel 9 using fasteners. The bottom of the frame 31 is installed within the connector 6. A first wire mesh 32 is longitudinally arranged within the frame 31, and a second wire mesh 33 is arranged on each of the two sides of the frame 31. A cement mortar layer 34 is filled between the first wire mesh 32 and the two second wire meshes 33. A plaster layer 35 is arranged outside the second wire meshes 33, and a waterproof layer 36 is arranged outside the plaster layer 35. A decorative panel 37 is adhered to the outside of the waterproof layer 36 using a magnesium-based cementitious material. A connector 6 is factory-processed, with a groove width 1-2 mm larger than the outer diameter of the transverse square steel 311. The connector 6 is hot-dip galvanized for rust prevention. A fiberglass mesh anti-crack layer is added between the waterproof layer 36 and the decorative panel 37. The fiberglass mesh is pre-impregnated with a magnesium-based cementitious material.

[0023] Ground beam 4 is a steel-framed concrete structure, with connecting angle steel 9 pre-embedded on its top surface. Multiple reinforcing bars are longitudinally distributed inside the steel frame.

[0024] The finished ground surface 5 includes, sequentially placed on the ground surface 8, a first mortar leveling layer 51, a first waterproof coating 52, a second mortar leveling layer 53, a second waterproof coating 54, a mortar protective layer 55, and stone 56. The first waterproof coating 52 and the second waterproof coating 54 extend to the top of the ground beam 4, and the ground beam 4 and the finished ground surface 5 are integrally cast together. The finished ground surface 5 adopts a multi-layer composite structure and is integrally cast with the ground beam 4, resulting in high base flatness and good waterproof sealing, providing a stable foundation support for the installation of the magnesium-wing composite wall panel 3. The finished ground surface 5 has a double-layer waterproof coating that extends to the top of the ground beam, forming an integrated waterproof system and avoiding water seepage problems.

[0025] A construction method for a prefabricated magnesium wing composite wall panel system includes the following steps: Step 1: Processing of Magnesium Wing Composite Wall Panel 3: Assemble multiple horizontal square steel bars 311 and vertical square steel bars 312 into a grid-like frame 31. Treat the connection nodes with rust prevention. Check the flatness deviation of the frame to be ≤3mm / 2m. Fix the first wire mesh 32 longitudinally inside the frame 31. Fix the second wire mesh 33 symmetrically on the two sides of the frame 31. Control the spacing between the three layers of wire mesh to be 40-50mm. Fill the gap between the first wire mesh 32 and the two second wire meshes 33 with concrete to form a cement mortar layer 34. Apply the plaster layer 35 and waterproof layer 36 to the outside of the second wire mesh 33 in sequence. After the waterproof layer 36 has cured, use magnesium-based cementitious material to paste the decorative panel 37. Control the ambient temperature at 5-35℃. After pasting, allow it to cure for ≥48 hours to complete the prefabrication of the magnesium wing composite wall panel 3. Step 2, Construction Pre-treatment: Clean and level the ground 8, and mark the construction outline of the ground beam 4; Step 3, Construction of Ground Beam 4: Erect a steel frame at the bottom of the ground beam 4 construction area according to the design, and firmly connect the steel frame to the reinforcing bars embedded in the ground 8, ensuring that the horizontal deviation of the steel frame is ≤1mm / m; precisely pre-embed connecting angle steel 9 on the top surface of the ground beam 4 pouring area, ensuring that the vertical deviation of the connecting angle steel axis is ≤2mm, completing the ground beam 4 pre-embedding process; pour concrete to ground beam 4, controlling the pouring speed to 0.3~0.5m / h, vibrating until dense and free of air bubbles, ensuring that the position of connecting angle steel 9 does not shift during the pouring process; simultaneously pour the first mortar leveling layer 51, so that ground beam 4 and the first mortar leveling layer 51 are integrally formed; after pouring, perform moisture curing until the concrete strength reaches C30 or above; Step 4: Construction of the remaining finished surface 5: After the ground beam 4 and the first mortar leveling layer 51 have reached the required strength, apply the first waterproof coating 52 on the first mortar leveling layer 51; after the first waterproof coating 52 has cured, apply the second mortar leveling layer 53 and the second waterproof coating 54, ensuring that both layers of waterproof coating extend to the top of the ground beam 4, with an overlap height ≥200mm, and apply a second coat using a roller coating method at the overlap; finally, lay the mortar protective layer 55 and the stone 56 to complete the construction of the finished surface 5 and protect the finished product. Step 5, Installation of connector 6: Install connector 6 on the top of connecting angle steel 9 with fasteners. Use a torque wrench to control the tightening torque of the fasteners to 35-40 N·m. Calibrate the horizontal deviation of the groove of connector 6 to ≤1 mm / m. Step 6, Installation of hoisting component 2: At the designated position of the main structure 1, fix two oppositely arranged adapters 22 with expansion bolts, and firmly connect one end of the hoist 21 to the adapter 22 on the side of the main structure, leaving the other end of the hoist 21 free length; Step 7, Hoisting of Magnesium Wing Composite Wall Panel 3: Use hoisting equipment to hoist the prefabricated magnesium wing composite wall panel 3 to the construction position. First, accurately insert the bottom horizontal square steel 311 of the frame 31 into the groove of the connector 6 to complete the initial positioning of the magnesium wing composite wall panel 3. Adjust the verticality and flatness of the magnesium wing composite wall panel 3, and simultaneously connect the other end of the hanger 21 to the top of the frame 31 through the adapter 22 to complete the double fixation of the bottom clamping and top hoisting of the magnesium wing composite wall panel 3. Check all connection nodes to ensure that there is no looseness or displacement. Set elastic buffer pads at the contact points between the bottom of the frame 31 and the groove of the connector 6, and make the surface of the elastic buffer pads with anti-slip serrations with a serration depth of 0.5-1mm. Step 8: Fine-tuning of Magnesium Wing Composite Wall Panel 3: Fine-tune the top elevation of Magnesium Wing Composite Wall Panel 3 to ensure seamless connection between the top of Magnesium Wing Composite Wall Panel 3 and the edge of Ceiling 7, completely concealing the hoisting component 2; use magnesium-based filler material to compact, smooth and seal the joint between Magnesium Wing Composite Wall Panel 3 and Ceiling 7, making the filler layer flush with the surrounding surface layer to form an integrated sealed and waterproof barrier. Step 9: Conduct a comprehensive inspection of the entire system. Use laser 3D scanning technology to inspect the overall verticality and flatness of the magnesium-winged composite wall panel 3, with a scanning point cloud density ≥ 50 points / ㎡. Perform ultrasonic flaw detection on all metal connection nodes, with a surface coupling degree ≥ 98%. After all test results meet the design and "Lightweight Partition Wall Panels for Building Magnesium Cementitious Materials" specifications, complete the finished product acceptance.

[0026] The above embodiments are merely illustrative of the concept and implementation of the present invention and are not intended to limit it. Under the concept of the present invention, technical solutions without substantial changes are still within the scope of protection.

Claims

1. A construction method for a prefabricated magnesium-coated composite wall panel system, characterized in that: It includes the main structure (1), hoisting components (2), magnesium wing composite wall panels (3), ground beams (4) and finished ground surface (5); The construction includes the following steps: Step 1, processing of magnesium-wing composite wall panel (3): fix the first wire mesh (32) longitudinally inside the frame (31), and fix the second wire mesh (33) symmetrically on the two sides of the frame (31); fill the gap between the first wire mesh (32) and the two second wire meshes (33) with concrete to form a cement mortar layer (34); apply the plaster layer (35) and waterproof layer (36) on the outside of the second wire mesh (33) in sequence; after the waterproof layer (36) has cured, use magnesium-based cementitious material to paste the decorative panel (37). Step 2, Construction Pre-treatment: Clean and level the ground (8), and mark the construction outline of the ground beam (4); Step 3, ground beam (4) construction: First, erect a steel frame and firmly connect the steel frame with the steel bars embedded in the ground (8). Then, pre-embed connecting angle steel (9) on the top surface of the ground beam (4) pouring area. Use concrete to pour the ground beam (4) and simultaneously pour the first mortar leveling layer (51). After pouring, carry out moist curing. Step 4: Construction of the remaining ground surface (5): The first waterproof coating (52), the second mortar leveling layer (53), and the second waterproof coating (54) are applied sequentially on the first mortar leveling layer (51), ensuring that both waterproof coatings extend to the top of the ground beam (4); finally, the mortar protective layer (55) and stone (56) are laid. Step 5, Installation of connector (6): Install connector (6) on top of connecting angle steel (9) using fasteners; Step 6, Installation of hoisting components (2): Fix two oppositely arranged adapters (22) at the designated position on the main structure (1), and firmly connect one end of the hoisting rod (21) to the adapter (22) on the side of the main structure; Step 7, hoisting of magnesium wing composite wall panel (3): hoist the magnesium wing composite wall panel (3) to the construction position, first insert the bottom of the frame (31) into the groove of the connector (6) to complete the initial positioning; then adjust the verticality and flatness of the magnesium wing composite wall panel (3), and simultaneously connect the other end of the hanger (21) to the top of the frame (31) through the adapter (22) to complete the double fixing of the bottom clamping and top hoisting of the magnesium wing composite wall panel (3); Step 8: Fine-tuning of magnesium wing composite wall panel (3): Fine-tune the top elevation of magnesium wing composite wall panel (3) to make the top of magnesium wing composite wall panel (3) seamlessly connected with the edge of ceiling (7); Step 9: Comprehensive system testing.

2. The construction method of the prefabricated magnesium-coated composite wall panel system according to claim 1, characterized in that: In step one, multiple transverse square steel bars (311) and longitudinal square steel bars (312) are assembled into a grid-like frame (31), the connection nodes are treated with rust prevention, and the flatness deviation of the frame is tested to be ≤3mm / 2m.

3. The construction method of the prefabricated magnesium-coated composite wall panel system according to claim 2, characterized in that: A fiberglass mesh anti-crack layer is added between the waterproof layer (36) and the decorative panel (37), and the fiberglass mesh is pre-impregnated with magnesium-based cementitious material.

4. The construction method of the prefabricated magnesium-coated composite wall panel system according to claim 2, characterized in that: In step five, the connector (6) is a U-shaped long strip groove structure, and the groove width is 1-2 mm larger than the outer diameter of the transverse square steel (311).

5. The construction method of the prefabricated magnesium-coated composite wall panel system according to claim 4, characterized in that: The surface of the connector (6) is hot-dip galvanized for rust prevention.

6. The construction method of the prefabricated magnesium-coated composite wall panel system according to claim 1, characterized in that: In step six, the adapter (22) is an angle steel and is installed on the main structure (1) by expansion bolts.

7. The construction method of the prefabricated magnesium-coated composite wall panel system according to claim 6, characterized in that: An elongated hole is provided on the adapter (22), and the rod (21) is connected to the elongated hole by fasteners to accommodate slight changes in the size of the magnesium wing composite plate (3).

8. The construction method of the prefabricated magnesium-coated composite wall panel system according to claim 4, characterized in that: In step seven, an elastic buffer pad is provided at the contact point between the bottom of the skeleton (31) and the groove of the connector (6), and the surface of the elastic buffer pad is treated with anti-slip serrations with a serration depth of 0.5 to 1 mm.

9. The construction method of the prefabricated magnesium-coated composite wall panel system according to claim 1, characterized in that: In step eight, the sealant layer is flush with the surrounding surface layer, forming an integrated sealed and waterproof barrier.

10. The construction method of the prefabricated magnesium-coated composite wall panel system according to claim 2, characterized in that: In step nine, laser three-dimensional scanning technology is used to detect the overall verticality and flatness of the magnesium wing composite wall panel (3), the scanning point cloud density is ≥50 points / ㎡, and ultrasonic flaw detection is performed on all metal connection nodes, with the coupling degree of the flaw detection surface being ≥98%.

Images