Visual seamless structure construction method of complex curved surface aluminum plate curtain wall

Abstract

The invention belongs to the technical field of building curtain wall construction, and particularly relates to a visual seamless structure of a complex curved surface aluminum plate curtain wall and a construction method of the visual seamless structure, and the visual seamless structure comprises a supporting system, a panel system and a seamless processing system; the supporting system comprises a fixing piece anchored to a civil engineering structure through a chemical anchor bolt, a transverse transfer arm connected with the fixing piece, a main keel vertically arranged through the transfer arm, an auxiliary keel transversely arranged on the main keel and a telescopic adjusting assembly. The panel system comprises an aluminum veneer and a self-tapping connecting piece; the aluminum veneer is fixedly connected to the auxiliary keel, the telescopic adjusting assembly is arranged between the auxiliary keel and the aluminum veneer, and the seamless processing system is located at the junction of the aluminum veneer and the plaster layer. According to the method, the problems of poor mounting precision and obvious visual seams of the complicated curved surface curtain wall are solved, and high-precision and high-efficiency construction is realized.

Description

Technical Field

[0001] This invention relates to the field of building curtain wall construction technology, specifically to a method for constructing a visually seamless structure for complex curved aluminum panel curtain walls. Background Technology

[0002] With the development of modern architectural aesthetics, curtain walls with complex curved shapes are increasingly used in large public buildings. The construction of such curtain walls has long faced technical challenges, including difficulty in controlling installation accuracy, obvious visual seams, low construction efficiency, and complex adaptation to deviations in the main structure. Existing technologies often employ traditional scaffolding erection and manual measurement methods, which suffer from low efficiency and insufficient accuracy; or, although BIM technology is used, it is not fully integrated with on-site scanning data, resulting in a disconnect between the model and actual site conditions; or, a systematic solution covering the entire process of design, positioning, installation, and post-construction treatment is lacking.

[0003] Therefore, in order to solve the above-mentioned problems, a visually seamless structural construction method for complex curved aluminum panel curtain walls is proposed. Summary of the Invention

[0004] This invention addresses the problems mentioned above by designing a visually seamless construction method for complex curved aluminum panel curtain walls. This invention solves the problems of poor installation accuracy and obvious visual seams in complex curved curtain walls, achieving high-precision and high-efficiency construction.

[0005] To achieve the above objectives, this invention provides a visually seamless construction method for complex curved aluminum panel curtain walls, comprising: a support system, a panel system, and a seamless treatment system; the support system includes fasteners anchored to the civil structure by chemical anchors, a horizontal adapter arm connecting the fasteners, a main keel vertically arranged through the adapter arm, a secondary keel horizontally arranged on the main keel, and an expansion and contraction adjustment assembly; the panel system includes aluminum panels and self-tapping connectors; the aluminum panels are fixedly connected to the secondary keels, the expansion and contraction adjustment assembly is arranged between the secondary keels and the aluminum panels, and the seamless treatment system is located at the junction of the aluminum panels and the plaster layer.

[0006] Furthermore, the seamless processing system includes: sealant, filler strip, and decorative coating. The filler strip is provided between the aluminum panel and the plaster layer, the filler strip is provided with sealant, and the decorative coating is provided on the aluminum panel.

[0007] This application also discloses a visually seamless construction method for complex curved aluminum panel curtain walls, including the following steps: S1. Detailed Design and Coordinate Extraction: Based on BIM software, a three-dimensional model of the tunnel shape is established, the curved model is decomposed into planar aluminum single-panel units, and the number of each panel and the three-dimensional coordinate data of the corner points are generated. S2. Measurement and Positioning: Using a total station based on the exported three-dimensional coordinate data, control points are measured and marked on the construction site to indicate the installation center position of the fasteners and the axis of the keel. S3. Installation of post-embedded parts: After drilling and cleaning at the marked positions, insert chemical anchors, install fasteners, and weld the fasteners to the transverse adapter arm after the pull-out test is qualified. S4. Keel frame installation: First, install the vertical main keel and weld it to the horizontal adapter arm; then, according to the grid size, install the horizontal secondary keel on the side of the main keel and install the telescopic adjustment components at the specified intervals. S5. Panel assembly: Transport the aluminum panels to the corresponding positions according to their numbers, fix them to the secondary keel by penetrating the aluminum panel folded edge with self-tapping connectors, and adjust the panel gaps. S6. Joint filling: Fill the joints between aluminum panels with filler strips, protect with masking tape, apply sealant and smooth. S7. Seamless surface treatment: After the sealant has cured, clean the board surface, and apply primer, spray stone paint, and apply transparent topcoat to the joints and the board surface in sequence to form a visually seamless effect.

[0008] Furthermore, in S3, the specific process for installing the post-embedded component is as follows: the drilling diameter is 2-4 mm larger than the diameter of the chemical anchor bolt. After cleaning the hole, the anchoring adhesive is injected, and the chemical anchor bolt is inserted. After the adhesive has cured, a pull-out test is conducted on site. Only after the test is passed can the fastener be installed and welded.

[0009] Furthermore, in S4, the installation position of the telescopic adjustment component is as follows: a telescopic adjustment node is set at the connection of the secondary keel every four segments; the specific connection method is as follows: a rubber pad is set between the secondary keel and the aluminum single panel through the self-tapping connector, and hot-dip galvanized steel angle brackets are used for external bridging, and two bolts are used to pass through the elongated holes on the steel angle brackets for connection, so as to adapt to temperature difference deformation.

[0010] Furthermore, in step S5, the installation process of the aluminum panel includes: the aluminum panel is made of aluminum alloy plate with a pre-applied fluorocarbon coating on the surface; during installation, stainless steel countersunk self-tapping screws are used as self-tapping connectors to directly penetrate the folded edge of the aluminum plate and fix it to the secondary keel.

[0011] Furthermore, in step S6, the specific operation of filling the gap is as follows: tear open the folded edge of the protective film of the aluminum single panel, apply masking tape to the corner folded edge, and fold the masking tape at a 90° angle at the four corner glue seams; fill with a dense filler strip, control the glue injection temperature at 15-30℃ and the relative humidity above 50%; after the glue is injected, scrape it flat in one go, and tear off the masking tape at a 45° outward tilt angle before the sealant is surface dry.

[0012] Furthermore, for the junction of the curtain wall and the plaster surface of the building, a flexible isolation construction method is adopted, and a gap is reserved between the bottom of the aluminum panel and the outdoor plaster surface; filler strips are filled into the gap and sealant is injected to form an elastic connection, preventing cracking caused by inconsistent deformation of different materials.

[0013] Furthermore, in step S7, the coating process for seamless surface treatment includes: first layer: applying a special primer of the same color by roller, leaving a serrated joint at the edge of the coating, with a drying time of 2 hours; second layer: spraying real stone paint, first spraying horizontally in a W shape, then spraying vertically in an S shape, and rolling with a semi-dry roller; third layer: applying weather-resistant transparent topcoat, with the roller brushing sequence being first the corners and then the large surface, and first the top and then the bottom.

[0014] In summary, the visually seamless structural construction method for complex curved aluminum panel curtain walls of the present invention has the following advantages and beneficial technical effects: 1. This invention and method solve the problem of obvious seams and visual discontinuity in traditional aluminum panel curtain walls through a unique seamless processing system. By employing a multi-layered processing technique of "filling with foam rods + injecting sealant + covering with a uniform coating," the physical seams between aluminum panels are eliminated, giving irregularly shaped curved surfaces a continuous and unified visual effect. Furthermore, flexible isolation construction is used at the junctions of different materials, ensuring a natural transition in appearance and effectively preventing coating cracking caused by differences in material expansion coefficients. 2. This invention employs a double-layer frame system of main keel + secondary keel, and a telescopic adjustment component consisting of "rubber pads + steel angle brackets + elongated hole bolts" is specially set at the connection of the secondary keel; this mechanical structure not only ensures the connection strength of the frame, but also effectively absorbs and releases the thermal expansion and contraction stress of the metal components caused by the temperature difference of the environment, preventing the curtain wall from deforming or arching due to temperature stress. 3. This invention utilizes BIM parametric modeling technology to decompose complex irregular curved surfaces into quantifiable planar unit data, directly exporting aluminum plate processing drawings and positioning coordinates, thus realizing prefabricated construction. Attached Figure Description

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a diagram showing the composition of each system in the construction and molding process of this invention; Figure 2 This is a diagram showing the different components of the various systems used in the construction and molding process of this invention. Figure 3 This is a schematic diagram of the seamless surface treatment of the present invention; Figure 4 This is a schematic diagram of the seamless processing of dissimilar material surface layers according to the present invention; Figure 5 This is a schematic diagram of the support structure between the aluminum single panel and the secondary keel of the present invention.

[0016] The reference numerals in the attached figures are: 1. Main keel; 2. Secondary keel; 3. Chemical anchors; 4. Aluminum single panel; 5. Fasteners; 6. Stiffening plates; 7. Self-tapping connectors; 8. Steel angle brackets; 9. Bolts; 10. Rubber gaskets; 11. Sealant; 12. Filler strips; 13. Decorative coating; 14. Concrete structure; 15. Plaster surface layer; 16. Support base; 17. Bolt rods; 18. Support strips; 19. Baffles; 20. Tightening nuts; Detailed Implementation To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout; the described embodiments are some embodiments of this invention, but not all embodiments; the embodiments and directional terms described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting this invention; all other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The parts and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be described in detail here. Contents not described in detail in this specification belong to the prior art known to those skilled in the art. The embodiments of this invention will be described in detail below with reference to the accompanying drawings: like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the system includes: a support system, a panel system, and a seamless treatment system. The support system includes fasteners 5 anchored to the civil structure 14 by chemical anchors 3, a transverse adapter arm connecting the fasteners 5, a main keel 1 vertically arranged via the adapter arm, a secondary keel 2 horizontally arranged on the main keel 1, and an expansion and contraction adjustment assembly. The panel system includes aluminum single-layer panels 4 and self-tapping connectors 7. The aluminum single-layer panels 4 are fixedly connected to the secondary keel 2, the expansion and contraction adjustment assembly is arranged between the secondary keel 2 and the aluminum single-layer panels 4, and the seamless treatment system is located at the junction of the aluminum single-layer panels 4 and the plaster layer 15. A stiffening plate 6 is provided on the fasteners 5, which fixes the transverse connecting arm to the fasteners 5, further improving the stability.

[0017] like Figure 3 and Figure 4As shown, the seamless treatment system includes: sealant 11, filler strip 12 and decorative coating 13. A filler strip 12 is provided between the aluminum single panel 4 and the plaster layer 15, and sealant 11 is provided on the filler strip 12. The decorative coating 13 is provided on the aluminum single panel 4.

[0018] This structure also includes a positioning system, which includes a total station, a positioning target, and a fitting model based on three-dimensional scan point cloud data, used to correct deviations in the main structure, with the fitting deviation controlled within ±3mm.

[0019] A support structure is provided between the secondary keel 2 and the aluminum single panel 4, including: support base 16, bolt rod 17, support bar 18, baffle 19 and tightening nut 20. The support base 16 is welded to the secondary keel 2 at intervals. The bolt rod 17 is rotatably mounted on the support base 16. The baffle 19 is fixedly mounted on the secondary keel 2 and the bolt rod 17 passes through the baffle 19 and is rotatably connected to the baffle 19. One end of the support bar 18 is slidably connected to the bolt rod 17. The tightening nut 20 is threadedly connected to the bolt rod 19. After tightening the tightening nut 20, the support bar 18 can be pressed against the baffle 19. By swinging the angle of the support bar 18, the other end of the support bar 18 can abut against the aluminum single panel 4, thus providing support for the aluminum single panel 4.

[0020] This application also discloses a visually seamless construction method for complex curved aluminum panel curtain walls, including the following steps: S1. Detailed Design and Coordinate Extraction: Based on BIM software, a three-dimensional model of the tunnel shape is established, the curved model is decomposed into four units of planar aluminum single panels, and the number of each panel and the three-dimensional coordinate data of the corner points are generated. S2. Measurement and Positioning: Using a total station based on the exported three-dimensional coordinate data, control points are measured and marked on the construction site to indicate the installation center position of the fastener 5 and the keel axis. S3. Installation of post-embedded parts: After drilling and cleaning at the marked position, insert chemical anchors 3, install fasteners 5, and weld fasteners 5 to the transverse adapter arm after the pull-out test is qualified. S4. Keel frame installation: First, install the vertical main keel 1 and weld it to the horizontal adapter arm; then, according to the grid size, install the horizontal secondary keel 2 on the side of the main keel 1, and install the telescopic adjustment components at the specified intervals. S5. Panel assembly: Transport aluminum single panel 4 to the corresponding position according to the number, fix it to the secondary keel 2 by penetrating the aluminum plate folded edge with self-tapping connector 7, and adjust the gap between the panels. S6. Filling the joint: Fill the joint between aluminum panels 4 with filler strip 12, protect with masking tape, apply sealant 11 and smooth it. S7. Seamless surface treatment: After the sealant has cured, clean the board surface, and apply primer, spray stone paint, and apply transparent topcoat to the joints and the board surface in sequence to form a visually seamless effect.

[0021] The selection rules for keel materials are as follows: the main keel 1 uses 120×60×5mm galvanized square tubing, and the secondary keel 2 uses 50×50×5mm galvanized square tubing; during welding and installation, the planar axis error of the transverse secondary keel 2 must be controlled within 2mm.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in S3, the specific process for installing the post-installed embedded part is as follows: the diameter of the drill hole is 2-4 mm larger than the diameter of the chemical anchor 3. After cleaning the hole, inject the anchoring adhesive, insert the M12×160mm chemical anchor 3, the anchoring depth is 120mm, the torque value is 45N·m, and after the adhesive has cured, conduct a pull-out test on site. Only after the test is qualified can the fastener 5 be installed and welded.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in S4, the telescopic adjustment assembly includes: steel angle brackets 8, rubber pads 10, and bolts 9. The installation position of the telescopic adjustment assembly is: one telescopic adjustment node is set at the connection of every four sub-keels 2; the specific connection method is: rubber pads 10 are set between the sub-keel 2 and the aluminum single panel 4 through self-tapping connectors 7, and the self-tapping connectors 7 are self-tapping bolts. Externally, 150×4mm hot-dip galvanized steel angle brackets 8 are used for bridging, and are connected by two M6×25mm bolts 9 passing through the elongated holes on the steel angle brackets 8 to accommodate temperature difference deformation.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in step S5, the installation process of aluminum panel 4 includes: aluminum panel 4 is made of aluminum alloy plate with a pre-coated fluorocarbon coating on the surface; during installation, stainless steel countersunk self-tapping screws are used as self-tapping connectors 7 to directly penetrate the aluminum plate fold and fix it to the secondary keel 2.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in step S6, the specific operation of filling the gap is as follows: tear open the protective film edge of the aluminum single panel 4, apply masking tape at the corner edge, and fold the masking tape at the four corner glue joints at a 90° angle; fill the gap with a dense filler strip 12, control the glue injection temperature at 15-30℃, and the relative humidity at 50% or more; after the glue is injected, scrape it flat in one go, and peel off the masking tape at a 45° outward tilt angle before the sealant is surface dry.

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a flexible isolation construction method is adopted for the junction of the curtain wall and the civil engineering plastering surface layer 15. A 15mm gap is reserved between the bottom of the aluminum single panel 4 and the outdoor plastering surface layer 15. The gap is filled with filler strips 12 and sealant 11 is injected to form an elastic connection to prevent cracking caused by inconsistent deformation of different materials.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in step S7, the coating process for seamless surface treatment includes: First layer: using a roller to apply a special primer of the same color, leaving a serrated joint at the edge of the coating, with a drying time of 2 hours; Second layer: spraying real stone paint, first spraying horizontally in a W shape, then spraying vertically in an S shape, and rolling with a semi-dry roller; Third layer: applying weather-resistant transparent topcoat, with the roller brushing sequence being first the corners and then the large surfaces, and first the top and then the bottom.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A visually seamless construction structure for complex curved aluminum panel curtain walls, characterized in that, include: The system comprises a support system, a panel system, and a seamless treatment system; the support system includes a fastener (5) anchored to the civil structure (14) by chemical anchors (3), a transverse adapter arm connecting the fastener (5), a main keel (1) vertically arranged by the adapter arm, a secondary keel (2) horizontally arranged on the main keel (1), and an expansion and contraction adjustment assembly; the panel system includes an aluminum single panel (4) and a self-tapping connector (7); the aluminum single panel (4) is fixedly connected to the secondary keel (2), the expansion and contraction adjustment assembly is arranged between the secondary keel (2) and the aluminum single panel (4), and the seamless treatment system is located at the junction of the aluminum single panel (4) and the plaster layer (15).

2. The visually seamless construction structure for a complex curved aluminum panel curtain wall according to claim 1, characterized in that, The seamless processing system includes: sealant (11), filler strip (12) and decorative coating (13). The filler strip (12) is provided between the aluminum single panel (4) and the plaster layer (15). The sealant (11) is provided on the filler strip (12). The decorative coating (13) is provided on the aluminum single panel (4).

3. The visually seamless construction method for complex curved aluminum panel curtain walls according to claim 1, characterized in that, Includes the following steps: S1. Detailed design and coordinate extraction: Based on BIM software, a three-dimensional model of the tunnel shape is established, the curved model is decomposed into planar aluminum single-panel (4) units, and the number of each panel and the three-dimensional coordinate data of the corner points are generated. S2. Measurement and positioning: Using a total station based on the exported three-dimensional coordinate data, control points are measured and marked on the construction site to mark the installation center position of the fastener (5) and the keel axis. S3. Installation of post-embedded parts: After drilling and cleaning at the marked position, insert chemical anchors (3), install fasteners (5), and weld the fasteners (5) to the transverse adapter arm after the pull-out test is qualified. S4. Keel frame installation: First, install the vertical main keel (1) and weld it to the horizontal adapter arm; then, according to the grid size, install the horizontal secondary keel (2) on the side of the main keel (1) and install the telescopic adjustment components at the specified intervals. S5. Panel assembly: Transport the aluminum single panel (4) to the corresponding position according to the number, fix it to the secondary keel (2) through the self-tapping connector (7) through the aluminum plate folding edge, and adjust the gap between the panels. S6. Filling the joint: Fill the joint between the aluminum panels (4) with filler strips (12), protect with masking tape, apply sealant (11) and smooth it. S7. Seamless surface treatment: After the sealant has cured, clean the board surface, and apply primer, spray stone paint, and apply transparent topcoat to the joints and the board surface in sequence to form a visually seamless effect.

4. The construction method for a visually seamless aluminum panel curtain wall with complex curved surfaces according to claim 3, characterized in that, In S3, the specific process for installing the post-embedded part is as follows: the diameter of the drill hole is 2-4 mm larger than the diameter of the chemical anchor (3), the anchoring adhesive is injected after cleaning the hole, the chemical anchor (3) is implanted, and a pull-out test is conducted on site after the adhesive has cured. Only after the test is qualified can the fastener (5) be installed and welded.

5. The visually seamless construction method for complex curved aluminum panel curtain walls according to claim 3, characterized in that, In S4, the installation position of the telescopic adjustment component is: a telescopic adjustment node is set at the connection of the sub-keel (2) of every four sections; the specific connection method is: a rubber pad (10) is set between the sub-keel (2) and the aluminum single panel (4) through the self-tapping connector (7), and hot-dip galvanized steel angle brackets (8) are used for external bridging, and two bolts (9) are passed through the elongated holes on the steel angle brackets (8) for connection, so as to adapt to temperature difference deformation.

6. The visually seamless construction method for complex curved aluminum panel curtain walls according to claim 3, characterized in that, In step S5, the installation process of the aluminum single panel (4) includes: the aluminum single panel (4) is made of aluminum alloy plate with a pre-made fluorocarbon coating on the surface; during installation, stainless steel countersunk self-tapping screws are used as self-tapping connectors (7) to directly penetrate the aluminum plate fold and fix it to the secondary keel (2).

7. The construction method for a visually seamless aluminum panel curtain wall with complex curved surfaces according to claim 3, characterized in that, In step S6, the specific operation of filling the gap is as follows: tear open the protective film edge of the aluminum single panel (4), attach masking tape at the corner edge, and fold the masking tape at the four corner glue seams at 90°; fill the gap with a dense filler strip (12), control the temperature and humidity of the glue injection, scrape it flat at one time after the glue is injected, and tear off the masking tape at a 45° outward tilt angle before the sealant is dry.

8. The construction method for a visually seamless aluminum panel curtain wall with complex curved surfaces according to claim 3, characterized in that, For the junction of the curtain wall and the plastering surface layer (15) of the building, a flexible isolation construction is adopted. A gap is reserved between the bottom of the aluminum single panel (4) and the outdoor plastering surface layer (15). Filler strips (12) are filled in the gap and sealant (11) is injected to form an elastic connection and prevent cracking caused by inconsistent deformation of different materials.

9. The construction method for a visually seamless aluminum panel curtain wall with complex curved surfaces according to claim 3, characterized in that, In step S7, the coating process for seamless surface treatment includes: First layer: applying a special primer of the same color with a roller, leaving a serrated joint at the edge, and drying for 2 hours; Second layer: spraying real stone paint, first spraying horizontally in a W shape, then spraying vertically in an S shape, and rolling with a semi-dry roller; Third layer: applying a weather-resistant transparent topcoat, with the roller brushing sequence being first the corners and then the large surface, and first the top and then the bottom.

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