A high-precision installation positioning method for a super-large hyperbolic unit type glass curtain wall

Abstract

The application relates to a high-precision installation positioning method for a super-large hyperbolic unit type glass curtain wall, and belongs to the technical field of building curtain wall construction. The method takes a building information model (BIM) as a core to construct a digital closed-loop construction process. Mainly comprising: establishing a high-precision three-dimensional digital model; based on the model, carrying out digital measurement and multiple-stage review; implementing precise prepositioning of embedded parts; adopting a special lifting system and integrating deformation control and multi-level safety protection; based on the model, using a three-dimensional adjustable mechanism to accurately position the unit and adjust the joint, and adopting a segmented calibration strategy to control errors; finally, fixing and verifying performance. The whole process realizes information collaboration and real-time guidance through a cloud platform. The application realizes the transformation from experience construction to data driving, systematically solves the problems of high-precision positioning, error control and safe construction of a complex curved surface curtain wall, and forms a standard intelligent construction system that can be popularized.

Description

Technical Field

[0001] This application relates to the technical field of building curtain wall construction, and in particular to a high-precision installation and positioning method for ultra-large hyperbolic unitized glass curtain walls. Background Technology

[0002] With the continuous development of architectural aesthetics and design concepts, glass curtain walls with complex spatial curved shapes have become a symbol of modern high-end architecture; however, the implementation of such hyperboloid unitized curtain walls has long faced severe challenges. Traditional curtain wall construction methods rely heavily on two-dimensional drawings and the personal experience of on-site construction workers for spatial imagination and positioning judgment, making it difficult to accurately understand and realize the architect's complex three-dimensional design intentions. This often results in significant deviations between the completed effect and the original design, as well as insufficient visual continuity and smoothness of the curved surfaces.

[0003] In actual construction, every step, from the processing of irregularly shaped components and on-site measurement and layout to high-altitude hoisting and positioning, has inherent errors. Traditional methods lack systematic error control and elimination mechanisms, and various deviations accumulate continuously during the long construction process, often resulting in inaccurate installation and positioning of curtain wall units, inconsistent joint widths, and overall surface distortion. This not only affects aesthetics but may also jeopardize the structural safety and sealing performance of the curtain wall. Furthermore, the high-altitude hoisting operation of irregularly shaped units is high-risk, and traditional hoisting and safety control measures are insufficient to address their unique center of gravity and deformation characteristics, leading to immense pressure on safety management.

[0004] Existing technologies primarily focus on solving localized or single-item problems, lacking a comprehensive and systematic solution encompassing the entire process from digital design and precision manufacturing to intelligent installation. This results in complex curved curtain wall projects often being synonymous with high costs, long construction periods, and high risks, hindering the free expression of architectural design and the overall progress of industry technology. Therefore, there is an urgent need for a systematic installation method that can span the entire process and achieve high-precision positioning and intelligent control. Summary of the Invention

[0005] The purpose of this application is to provide a high-precision installation and positioning method for ultra-large hyperbolic unitized glass curtain walls to solve the problems in the background art.

[0006] To achieve the above objectives, this application adopts the following technical solution: A high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall includes the following steps: S1. Obtain a three-dimensional digital model of the curtain wall system based on BIM technology. The three-dimensional digital model includes the spatial coordinates, geometric dimensions and connection node information of all hyperbolic unit components. S2. Based on the aforementioned three-dimensional digital model, and combining the three-dimensional coordinate positioning method with GPS spatial positioning technology, comprehensive measurement and layout are carried out on site to determine the installation control points for each floor plan and each curtain wall unit. S3. Based on the layout results, accurately set and verify the embedded parts or post-installed connectors to ensure that their positional deviations are within the design allowable range. S4. Use a dedicated hoisting system to hoist the hyperbolic unit to the installation position, and implement deformation control and safety control during the hoisting process; S5. Initially connect the hyperbolic unit component hoisted to the installed structure. Then, guided by the three-dimensional digital model, precisely position the hyperbolic unit component using a fine-tuning device to match its spatial position with the design model, and adjust the joints between adjacent units. S6. After the hyperbolic unit is positioned, perform final fixing and conduct on-site sealing and performance testing in accordance with the specifications.

[0007] Preferably, the comprehensive measurement and layout in step S2 includes the following steps: S21. Based on the building baseline provided by the general contractor, use a total station or GPS equipment to transfer the control points to each floor to be installed. S22. Establish a detailed measurement control network within the floor, mark the theoretical installation positions of each curtain wall unit hanging point and embedded part, and form a detailed installation position line; S23. Take photos of the detailed installation position lines for archiving and generate a written measurement report; S24. Regularly review and verify the deployed detailed measurement control network and detailed installation position lines, and conduct a joint coordinate data check every few floors to ensure overall measurement accuracy. S25. Compare the on-site measurement data with the three-dimensional digital model in real time. If the deviation exceeds the limit, start the design correction process.

[0008] Preferably, the dedicated hoisting system in step S4 is selected from at least one of the following methods according to the site conditions: a rail system, a spider crane system, or a tower crane system; Rail system: Fixed rails are installed on the building facade or roof, and electric chain hoists are used for horizontal and vertical transportation of unit components; Spider crane system: Self-propelled spider cranes are used on the floor, in conjunction with manual hoists, for partial hoisting and positioning of unit components; Tower crane system: Utilizing the tower cranes of the general contractor for large-scale vertical lifting of unit components.

[0009] Preferably, the deformation control in step S4 includes: using high-precision, high-strength special aluminum profiles to make unit frames, and using high-strength two-component structural adhesive in glass installation to resist structural deformation during hoisting; the safety control includes setting anti-collision tires at structural protrusions, adding tail ropes for stability when unit components protrude, and setting secondary fall protection safety ropes independent of the main hoisting point.

[0010] Preferably, in step S3, before the nailing stage of the concrete structure construction, the curtain wall embedded parts are pre-placed according to the three-dimensional digital model; after the nailing is completed and before the concrete is poured, the position of the embedded parts is measured and verified at least twice in stages, and a measurement report is generated to guide the correction or confirmation, so as to control the accuracy of the installation base point from the source.

[0011] Preferably, in step S5, the precise positioning of the hyperbolic unit component by the fine-tuning device is specifically as follows: first, the bottom water trough of the lower part of the hyperbolic unit component is inserted into the upper horizontal material of the lower installed unit for initial positioning; then, the hyperbolic unit component is finely adjusted in three dimensions by the adjustable hook-and-loop fastener to align it with the theoretical position in the three-dimensional digital model.

[0012] Preferably, the first lifting point of the hyperbolic unit is the hanging lug on the upper part of the unit, and the second lifting point is the bottom water tank on the lower part of the unit. After being hoisted into place, it needs to be flipped over to ensure that the water tank is in the correct position.

[0013] Preferably, when adjusting the joints between adjacent units in step S5, an overall positioning and joint width check is performed after a predetermined number of hyperbolic unit components have been installed, in order to reduce and disperse cumulative errors.

[0014] Preferably, the on-site sealing and performance testing in step S6 includes at least: pull-out force testing of some embedded parts by a third-party testing agency, and on-site water spraying test of the installed curtain wall units in proportion to verify their water tightness.

[0015] Preferably, throughout the entire process of steps S1 to S6, the cloud platform is accessed via a mobile terminal to call up and compare the three-dimensional digital model, processing drawings, and installation guidance documents in real time, guiding on-site measurement, hoisting, and installation adjustment operations, thereby realizing visualized and digital management of the entire construction process.

[0016] In summary, this application includes the following beneficial technical effects: 1. This application constructs a digital closed-loop workflow centered on a unified building information model, spanning the entire process of design, production, measurement, hoisting, and positioning. By transforming abstract curved surface designs into digital instructions containing precise spatial coordinates and process information, and leveraging a cloud-based collaborative platform to guide on-site operations in real time, it changes the traditional construction model that relies on two-dimensional drawings and workers' personal experience for spatial judgment and decision-making. This "model-guided construction, data feedback correction" system ensures that the architect's complex curved surface design intentions can be transmitted without loss and transformed into a physical building with high fidelity, significantly improving the scientific nature, predictability, and first-time success rate of construction.

[0017] 2. This application, through the comprehensive application of high-precision measurement and layout, multi-stage verification and correction, three-dimensional adjustable connection mechanisms, and an error control strategy of "segmented installation and segmented verification," effectively eliminates various deviations during the installation process at each stage, suppressing error accumulation and ultimately achieving millimeter-level overall installation accuracy and uniform, aesthetically pleasing joint effects for the curtain wall units. Simultaneously, addressing the unique risks of hoisting irregularly shaped units, the integrated dedicated hoisting solution design, proactive deformation control, and multi-level passive safety protection including anti-collision, stabilization, and fall prevention construct a comprehensive and verifiable safety assurance system, significantly reducing the risks of high-altitude hoisting operations.

[0018] 3. This application summarizes and verifies a complete management system from digital design to intelligent construction. This system clarifies the key technical points, quality control nodes, and collaborative workflows at each stage, transforming complex special projects into standardized, process-oriented, and controllable operations. It can provide mature and reliable technical references and systematic solutions for curtain wall projects with complex spatial curved shapes, especially for the construction of external envelope systems of super high-rise, super large, and irregularly shaped buildings. It has a positive demonstration and promotional role in promoting the upgrading of the entire building curtain wall industry towards digitalization, precision, and intelligence. Attached Figure Description

[0019] Figure 1 This is a flowchart of the high-precision installation and positioning method of this application; Figure 2 This is a flowchart of the comprehensive surveying and setting-out process of this application; Figure 3 This is a schematic diagram illustrating the installation and use of the spider vehicle described in this application. Detailed Implementation

[0020] To further explain the technical solution of this application, a detailed description is provided below through specific embodiments.

[0021] Please see Figures 1-3This application provides a high-precision installation and positioning method for ultra-large hyperbolic unitized glass curtain walls. Using a building information model (BIM) as the sole data source and driving force, this method is integrated throughout the entire process of design refinement, factory prefabrication, on-site measurement, and hoisting positioning, forming a closed-loop control process where the model guides construction and data feedback provides corrections. Specifically, it includes the following steps: S1. Establish and refine the high-precision 3D digital model of the curtain wall system: Based on the architectural design model, parametric design tools (such as Rhino and Grasshopper) are used to refine the curtain wall system design, creating a detailed BIM model that includes all hyperbolic unit components, supporting structures, and connection nodes (including embedded parts, transition parts, mounting brackets, sealing systems, etc.). This model not only includes geometric information (spatial coordinates XYZ, surface curvature, and dimensions), but also material information, fabrication information, installation sequence, clash check results, and the theoretical coordinates of key control points.

[0022] S2. Comprehensive measurement and layout based on 3D model and multiple measurement techniques: S2.1, Benchmark Transfer and Verification: Using equipment such as total station and GPS, the overall building control network (benchmark axis and elevation points) provided by the general contractor is transferred with high precision to each construction floor to establish a floor plan control network; S2.2 Detailed layout and marking: Based on the floor control network, and combined with the information such as the center coordinates of the hanging points, the center coordinates of the embedded parts, and the unit boundary lines of each curtain wall unit extracted from the BIM model, a total station or laser line projector is used to perform detailed layout on the floor slabs, structural beams, etc. on site, and clearly mark the theoretical position of each installation control point (such as popping out ink lines and setting up signs). S2.3 Data archiving and report generation: Take photos and record the three-dimensional coordinates of the key control points in each surveying process to generate an electronic measurement report with spatiotemporal information, which will be archived for future reference; S2.4 Periodic Verification and Joint Measurement: Establish a periodic verification system to conduct spot checks on the control lines that have been laid out; after the installation foundation layout of several floors (e.g., 5 floors) is completed, conduct a cross-floor "joint coordinate data check" to systematically verify and eliminate the accumulation of measurement errors by comparing the measurement data with the BIM model; S2.5 Real-time data comparison and correction: The data of embedded parts, structural outlines and other data measured on site are input in real time and compared with the BIM model; if the deviation exceeds the preset tolerance (e.g., ≤±25mm in one direction), an automatic warning is issued and the design correction process is initiated to generate an adjustment plan or processing drawing adapted to the actual site conditions.

[0023] S3. Precise pre-installation and multi-stage verification of embedded parts or post-installed connectors: S3.1 Pre-installed Embedded Parts: Before the installation of concrete formwork (nail plate), the curtain wall embedded parts are precisely fixed to the steel cage according to the BIM model and the measurement layout results; S3.2 Multi-stage measurement and verification: After the embedded parts are fixed and before the concrete is poured, the first position verification is carried out; after the formwork is removed and before the curtain wall is installed, the second precise verification is carried out; both verifications generate measurement reports, and for embedded parts whose deviations exceed the allowable range, remedial measures are taken before installation through design confirmation (such as adding adjustment steel plates).

[0024] S4. Employ a dedicated hoisting system and implement deformation and safety controls: S4.1 Selection and Verification of Lifting System: Based on unit size, weight, building facade characteristics, and site conditions, one or more of the following lifting schemes in combination shall be selected, and each shall be subject to specific stress calculations and safety verification: Rail system: Fixed steel rails are installed on the roof or rooftop, and electric chain hoists are used to transport large quantities of units vertically and horizontally in a regular manner over long distances. Spider truck (self-propelled aerial work platform): It is mobile and flexible, and is suitable for unit transportation and positioning in areas where the work surface is scattered and tower cranes cannot cover; Tower crane system: Utilizing the main structure construction tower crane, the lifting speed is fast, but the usage time needs to be closely coordinated with the general contractor; S4.2 Active control of hoisting deformation: High-strength and high-precision aluminum alloy profiles are selected as unit frames during the design phase, and two-component structural adhesives with excellent adhesion and toughness are used for glass assembly. This improves the overall rigidity of the unit from the material level and resists deformation during hoisting.

[0025] S4.3, Full-process safety control: Collision protection: Flexible buffer devices such as used tires are installed at the edges of the building structure and at protruding objects such as columns to prevent the unit from being damaged by collisions during hoisting; Tail rope stabilization control: During the process of transporting the unit out of the building, the workers inside the building use the tail rope to pull and control the swing of the control unit to assist in positioning; Secondary fall protection system: Outside the main lifting point of the unit, an independent safety rope is set up as a second fall protection, which is slightly longer than the main sling to ensure that the unit will not fall in the event of accidental failure of the main lifting equipment.

[0026] S5. Model-guided precise positioning of units and seam adjustment: S5.1 Initial Positioning: After the hyperbolic unit is hoisted to the installation area, the bottom water trough of the unit is first precisely inserted into the top horizontal material of the lower installed unit to achieve initial vertical support and lateral limitation. S5.2 Three-dimensional fine-tuning: The unit is connected to the adapter embedded in the structure through the upper hook bracket. The hook bracket is designed to be three-dimensionally adjustable (usually achieved through elongated holes, adjusting screws, etc.). Construction personnel use special fine-tuning tools (such as modular wrenches and miniature jacks) to make fine adjustments to the unit in the X, Y, and Z directions, referring to the unit's BIM model and its theoretical coordinates displayed on the mobile terminal, until the error between its actual spatial position and the theoretical position in the model is within millimeters. S5.3 Joint Width Control and Error Dispersion: During fine-tuning, the joint width between adjacent units is controlled synchronously to ensure uniformity and compliance with design requirements. To effectively control cumulative errors, a segmented installation and verification strategy is adopted. That is, after a certain number (e.g., 4-6) of units are installed consecutively, installation is paused, and a total station or 3D scanner is used to re-measure the units in this section. The measured data is compared with the model, and fine-tuning is performed if necessary. After ensuring that the installation accuracy of this section is qualified, subsequent installation can continue. This decomposes long-chain errors into multiple controllable short-chain errors.

[0027] S6. Final Fixing, Sealing, and Performance Verification: S6.1 Final Fixing: After the unit is accurately positioned and verified to be qualified, tighten all connecting bolts to the torque required by the design to complete the final fixing, and perform anti-loosening treatment on the adjustable parts (such as spot welding, applying thread locking agent). S6.2 After the unit is installed, conduct on-site verification testing according to the specified proportions: Structural safety testing: A third-party testing agency was hired to conduct on-site pull-out force tests on some embedded parts and post-installed anchors; Water tightness test: For the installed curtain wall units, a customized mobile spray frame or high-pressure water gun is used to simulate storm conditions and conduct on-site dynamic water tightness test (water spray test) to check the quality of sealant application and the waterproof performance of unit joints.

[0028] In all steps S1 to S6 above, all information such as BIM models, fabrication drawings, measurement data, installation operation instructions, and quality inspection records are integrated and shared through a cloud-based collaborative platform (such as "Xiezhu"). On-site managers and construction workers can access the cloud platform anytime via smartphones, tablets, and other mobile terminals to view the 3D model, positioning coordinates, installation animation, precautions, and other information of the current installation unit in real time. This realizes a digital construction mode where drawings are readily available and models are right in front of you, greatly improving the accuracy of information transmission and the intuitiveness of operation instructions.

[0029] Example 1: A detailed explanation of the specific application of the method described in this application is provided using a typical super high-rise building hyperboloid unitized glass curtain wall project as an example. In this case, the total area of ​​the curtain wall exceeds 20,000 square meters, containing a large number of hyperboloid glass units of varying sizes and curvatures. Its complex shape places extremely high demands on design, processing, and installation.

[0030] Step S1: Establish a high-precision BIM model: 1. The design team used Rhino software to create a precise "digital shell" for the building; 2. Using Grasshopper, parametric curtain wall partitioning was performed, dividing the curved surface into nearly 3,000 quadrilateral units of varying sizes, and automatically generating the spatial coordinates of the four corners of each unit; 3. In BIM platforms such as CATIA or Revit, create a detailed assembly model for each unit, including glass, aluminum frame, hardware, and sealing strips. Perform detailed modeling and clash checking on the connection nodes (male and female parts, sealing strips, drainage channels) between all units. 4. Export the processing drawings (including the 2D unfolded drawing of curved glass and the bending processing data of curved aluminum profiles) and the installation coordinate table (absolute and relative coordinates of each hanging point and embedded part) from the model in batches. 5. Upload the complete BIM model and all derived data to the enterprise cloud collaboration platform.

[0031] Step S2, Comprehensive Measurement and Setting-out Implementation: 1. The surveying team receives the first-floor benchmark points provided by the general contractor; 2. Using a 0.5-second high-precision total station, the control points are transferred upwards layer by layer using the "traverse surveying method". After the floor slab is poured, at least 4 control points are immediately set up on that floor to form a closed traverse network for adjustment to ensure the accuracy of the floor control points. 3. Based on the "Installation Coordinate Table of Unit N" issued by the cloud platform, the surveyor used the "Coordinate Layout" function of the total station to lay out the pre-embedded points of the four hanging brackets for each unit on the floor structure one by one, and marked and numbered them with a clear marker pen; 4. After the daily layout work is completed, the measured coordinates of the layout points are entered into a tablet computer. The coordinates are then automatically compared with the theoretical coordinates in the cloud BIM model through a dedicated app to generate a "Daily Layout Deviation Report". This project requires the layout deviation to be controlled within ±3mm. 5. After laying out the lines for every 5 floors, use GPS to connect and measure the external control points distributed on these 5 floors to check the vertical transmission deviation and ensure the spatial alignment accuracy between the overall model and the building entity.

[0032] Step S3: Precise placement of embedded parts: 1. In the project, the "embedded groove" system is adopted. Based on the above layout results, the embedded groove is precisely fixed on the steel bars of the beams and columns during the steel bar binding stage. 2. Before concrete pouring, the supervisor, general contractor, and curtain wall surveyor shall jointly conduct the first inspection of the embedded groove location, and use a measuring tape and total station to conduct spot checks. Pouring can only proceed after the inspection is qualified. 3. After the template is removed, a second comprehensive measurement and verification will be carried out immediately. The actual position and angle of all embedded slots will be scanned using a total station, and point cloud data will be generated and compared with the BIM model. For a few embedded slots with excessive deviation due to casting displacement (>10mm), the design will issue an "Embedded Part Correction Plan", and a transition steel plate with a specific angle will be welded to compensate for the deviation, so as to ensure the correct position of the subsequent hanging point.

[0033] Step S4, Lifting and Safety Control: The outer frame of the core tube of the main structure of this project is curved, and a spider crane is selected as the main hoisting equipment. 1. Select a spider crane model whose rated load meets the requirements of the heaviest unit (approximately 800 kg), and verify its structural bearing capacity on the floor movement path. If necessary, lay steel plates to distribute the load. 2. Before leaving the factory, each unit undergoes 1:1 physical pre-assembly and 3D scanning inspection to ensure that its geometric dimensions are qualified. The frame uses 6063-T6 high-strength aluminum profiles, and the glass is bonded with imported Sika two-component structural adhesive to ensure the rigidity of the unit itself.

[0034] 3. During hoisting, the outer side of the unit is covered with a protective film, and the steel structure column corners at the edge of the building floor are wrapped with thick rubber tires. When the unit is sent out of the floor by the spider crane arm, a worker inside the building uses a safety rope (tail rope) to pull the bottom of the unit to control its smooth "swinging out". 4. Each unit is equipped with two lifting points. The main lifting point is the upper hanging lug, which is connected using a special hoisting steel frame. The secondary lifting point is an independent connection point for the fall protection safety rope, which is always kept slightly slack as a last resort.

[0035] Step S5, Precise Positioning and Adjustment: 1. The spider crane lifts the unit to the vicinity of the installation position, and the workers assist in aligning the bottom water trough of the unit with the upper horizontal material of the lower unit, and slowly lowering it to complete the initial insertion; 2. The worker then installed the two mounting brackets on the upper part of the unit. These brackets are connected to the T-bolts in the pre-embedded groove. The brackets are equipped with vertical elongated holes and horizontal adjusting screws. 3. The foreman holds an iPad with the collaborative platform app installed, brings up the 3D model of the currently installed unit, and directs two workers. One worker uses a wrench to tighten and loosen the bolts to adjust the left and right (X-axis) and in and out (Y-axis) of the unit, while the other worker uses a special Allen wrench to adjust the set screws on the clamps to adjust the up and down (Z-axis) of the unit. The foreman directs the work by observing the real-time theoretical position of the unit displayed on the iPad and combining visual inspection / measurement until the deviation indicator on the iPad shows that the deviation in all three directions is less than 2mm, and the width of the glue joint between adjacent units is uniformly 15mm±1mm. 4. After each 6 units (one hoisting section) are installed, the surveying engineer uses a total station with a prism to quickly verify the corner points of these 6 units, and feeds the data back to the foreman. Only after confirming that the installation of this section is qualified can the installation of the next section be carried out.

[0036] Step S6, Final Fixation and Testing: 1. After the positioning and adjustment are completed, the worker uses a torque wrench to tighten all the connecting bolts to the design value (e.g., 80 N·m) and marks the bolt heads.

[0037] 2. An accredited laboratory was hired to randomly select 3% of the embedded grooves for on-site pull-out tests, and the results all met the requirement of more than twice the design value.

[0038] 3. After the curtain wall is installed in a certain area, a movable aluminum alloy spray frame is used to conduct a continuous 15-minute water spray test on about 20% of the installed units. The water pressure simulates the intensity of a 50-year rainstorm in the local area. After the test, the indoor inspection showed no leakage.

[0039] Through the systematic implementation of the above six steps, the method of this application successfully transforms the complex challenges of hyperboloid curtain wall installation into a series of controllable, measurable, and optimizable standardized operating procedures. This example demonstrates that this application can effectively guide engineering practice, achieve high-precision implementation of design intent, ensure construction safety and quality, and has important demonstration and promotion value for similar complex curved curtain wall projects.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall, characterized in that, Includes the following steps: S1. Obtain a three-dimensional digital model of the curtain wall system based on BIM technology. The three-dimensional digital model includes the spatial coordinates, geometric dimensions and connection node information of all hyperbolic unit components. S2. Based on the aforementioned three-dimensional digital model, and combining the three-dimensional coordinate positioning method with GPS spatial positioning technology, comprehensive measurement and layout are carried out on site to determine the installation control points for each floor plan and each curtain wall unit. S3. Based on the layout results, accurately set and verify the embedded parts or post-installed connectors to ensure that their positional deviations are within the design allowable range. S4. Use a dedicated hoisting system to hoist the hyperbolic unit to the installation position, and implement deformation control and safety control during the hoisting process; S5. Initially connect the hyperbolic unit component hoisted to the installed structure. Then, guided by the three-dimensional digital model, precisely position the hyperbolic unit component using a fine-tuning device to match its spatial position with the design model, and adjust the joints between adjacent units. S6. After the hyperbolic unit is positioned, perform final fixing and conduct on-site sealing and performance testing in accordance with the specifications.

2. The high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall according to claim 1, characterized in that, The comprehensive measurement and layout described in step S2 includes the following steps: S21. Based on the building baseline provided by the general contractor, use a total station or GPS equipment to transfer the control points to each floor to be installed. S22. Establish a detailed measurement control network within the floor, mark the theoretical installation positions of each curtain wall unit hanging point and embedded part, and form a detailed installation position line; S23. Take photos of the detailed installation position lines for archiving and generate a written measurement report; S24. Regularly review and verify the deployed detailed measurement control network and detailed installation position lines, and conduct a joint coordinate data check every few floors to ensure overall measurement accuracy. S25. Compare the on-site measurement data with the three-dimensional digital model in real time. If the deviation exceeds the limit, start the design correction process.

3. The high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall according to claim 1, characterized in that, The dedicated hoisting system in step S4 shall select at least one of the following methods based on the site conditions: Rail system: Fixed rails are installed on the building facade or roof, and electric chain hoists are used for horizontal and vertical transportation of unit components; Spider crane system: Self-propelled spider cranes are used on the floor, in conjunction with manual hoists, for partial hoisting and positioning of unit components; Tower crane system: Utilizing the tower cranes of the general contractor for large-scale vertical lifting of unit components.

4. The high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall according to claim 1, characterized in that, The deformation control mentioned in step S4 includes: using high-precision, high-strength special aluminum profiles to make unit frames, and using high-strength two-component structural adhesive in glass installation to resist structural deformation during hoisting; the safety control includes setting anti-collision tires at structural protrusions, adding tail ropes for stability when unit components protrude, and setting secondary fall protection safety ropes independent of the main hoisting point.

5. The high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall according to claim 1, characterized in that, In step S3, before the nailing stage of the concrete structure construction, the curtain wall embedded parts are pre-placed based on the three-dimensional digital model; after the nailing is completed and before the concrete is poured, the position of the embedded parts is measured and verified at least twice in stages, and a measurement report is generated to guide the correction or confirmation.

6. The high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall according to claim 1, characterized in that, In step S5, the precise positioning of the hyperbolic unit component by the fine-tuning device is as follows: First, the bottom water trough of the lower part of the hyperbolic unit component is inserted into the upper horizontal material of the lower installed unit for initial positioning. Then, the hyperbolic unit component is finely adjusted in three dimensions by the adjustable hook-and-loop fastener to align it with the theoretical position in the three-dimensional digital model.

7. The high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall according to claim 6, characterized in that, The first lifting point of the hyperbolic unit is the hanging lug on the upper part of the unit, and the second lifting point is the bottom water tank on the lower part of the unit. After being lifted into place, it needs to be flipped to ensure that the water tank is in the correct position.

8. The high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall according to claim 1, characterized in that, In step S5, when adjusting the joints between adjacent units, an overall positioning and joint width check is performed after a predetermined number of hyperbolic unit components are installed, in order to reduce and disperse cumulative errors.

9. The high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall according to claim 1, characterized in that, The on-site sealing and performance testing mentioned in step S6 includes at least: pull-out force testing of some embedded parts by a third-party testing agency, and on-site water spraying test of the installed curtain wall units in proportion to verify their water tightness.

10. The high-precision installation and positioning method for an ultra-large hyperbolic unitized glass curtain wall according to claim 1, characterized in that, Throughout steps S1 to S6, the cloud platform is accessed via a mobile terminal to call up and compare the three-dimensional digital model, processing drawings, and installation guidance documents in real time, guiding on-site measurement, hoisting, and installation adjustment operations.

Images