A precise installation control system based on special-shaped arc glass curtain wall

Abstract

The application discloses a kind of based on special-shaped arc glass curtain wall precision installation control system, it is related to curtain wall installation control technical field, the application is first by point position determination module, extracts main secondary keel, the key position of glass aluminum plate, plans candidate point position, in turn carries out static installation, dynamic adjustment, three kinds of deformation simulation of limit working condition, filters optimal point position, and according to deformation simulation, constructs point position control data, subsequently by curtain wall installation module, with optimal installation point position corresponding fixed, relies on curtain wall measurement control net, realizes dynamic review and precision adjustment in the installation process of keel, panel, after all installation is completed, by overall acceptance module carries out all-around acceptance, rectification closed loop after implementation standardization finished product protection, solve the problem that special-shaped arc glass curtain wall installation precision is low, regulation is inefficient, security is insufficient, guarantee the surface coherence, structure stability and appearance integrity of curtain wall finished product.

Description

Technical Field

[0001] This invention relates to the field of curtain wall installation control technology, specifically to a precision installation control system for irregularly shaped curved glass curtain walls. Background Technology

[0002] In landmark building projects in large cities, complex and irregular-shaped buildings account for more than 30%. Given the rapid development trend of complex and irregular-shaped building projects, there is an urgent need to introduce advanced digital construction technologies to promote the transformation and upgrading of the construction industry towards intelligence and refinement.

[0003] Existing technologies, such as the BIM-based design and construction method for curved multi-curved irregular curtain walls disclosed in CN115324359A, simulate the deformation of the curtain wall keel under construction conditions to make a third design of the keel's curvature and sag, and make a third design of the panel segment size based on the secondary stress deformation results, so that the finished curtain wall after installation and deformation can achieve the effect of the designed facade, and can intuitively and vividly display the actual three-dimensional model; and the construction method for single-curved irregular glass curtain wall structures disclosed in CN117034417A, use BIM modeling to model the curtain wall according to the building environment, process parts according to the engineering drawings generated by modeling, and improve the accuracy of parts; the keel parts are processed and preliminarily assembled in the factory, reducing the operation steps on the construction site and improving construction efficiency; during on-site installation, the keel adopts a dual reinforcement mode of slot fixing and stainless steel bolt connection.

[0004] The aforementioned technical solutions all revolve around the design optimization, construction efficiency improvement, and construction quality assurance of irregular-shaped curtain walls. They propose corresponding technical means in areas such as BIM model application, deformation simulation correction, factory processing, and on-site reinforcement, which to some extent solve the problems of design and construction disconnect, insufficient component precision, and low construction efficiency in the traditional design and construction of irregular-shaped curtain walls. In actual installation control, the fixed installation points with reasonable planning can improve installation accuracy and reduce material deformation. However, the above solutions all lack the design of installation point planning, and have not simulated and verified the rationality of the stress on the points and the effectiveness of adjustment. The lack of precise planning and full-condition simulation verification of installation points means that if deviations such as keel offset or panel tilt occur during construction, there are no clear adjustment points or adjustment basis. They can only rely on the experience of construction personnel for rough adjustments, resulting in extremely low adjustment accuracy, which is difficult to meet the high-precision installation requirements of irregular curved curtain walls. At the same time, the lack of extreme condition simulation makes it impossible to verify the stability of the points and curtain wall structure under extreme loads, which poses structural safety hazards and may lead to problems such as keel deformation and panel cracking during later use.

[0005] By installing multi-point electric adjustment devices one-to-one with each installation point and relying on a point control database, the adjustment devices can achieve automated and coordinated operation. Based on the actual measured deviations on site, the preload, angle, stroke, and other control parameters of each point can be precisely matched to dynamically correct the installation deviations between the keel and the panel. However, the above-mentioned technical solutions do not involve the application and coordinated control of electric adjustment devices. They lack multi-point electric adjustment devices and coordinated control mechanisms, and only use a passive construction scheme of design correction + fixed installation. This cannot achieve dynamic deviation correction during construction, affecting the appearance and structural stability. On the other hand, it cannot adapt to the small-scale, step-by-step, and coordinated adjustment needs in the construction of irregular curved curtain walls, making it difficult to ensure the continuity of the curved surface of the multi-curved curtain wall, and easily causing problems such as unevenness of the curved surface and inconsistent width of the panel joints. In addition, without precise matching of adjustment parameters, even manual adjustment is prone to over-adjustment or under-adjustment, resulting in keel deformation and panel damage.

[0006] By utilizing a point control database, an automated closed loop of deviation identification, parameter retrieval, and action execution can be achieved. However, the above technical solutions lack a point control database, making it impossible to achieve automated and intelligent construction. During the construction process, all operations rely on manual labor and experience, resulting in low efficiency and susceptibility to human error. Furthermore, it is impossible to achieve data collaboration between design, simulation, construction, and adjustment. Optimization parameters from the design phase cannot be accurately transmitted to the construction phase, leading to a disconnect between design and construction. Summary of the Invention

[0007] To address the aforementioned technical shortcomings, the present invention aims to provide a precision installation control system based on irregularly shaped curved glass curtain walls.

[0008] To solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a precision installation control system based on irregular curved glass curtain walls, including the following modules: a point determination module, used to import the BIM design model of the irregular curved glass curtain wall, set candidate points on the main and secondary keels and panels, and then perform point deformation simulation tests on the candidate points to determine the installation point set on the main and secondary keels.

[0009] The database construction module is used to build a point control database based on the results of point deformation simulation tests.

[0010] The curtain wall installation module is used to install and fix the multi-point electric adjustment device one by one with the installation point set on the main and secondary keels and the installation point set of each panel. During the installation process, the curtain wall measurement control network and the point control database are used to perform dynamic verification and adjustment simultaneously.

[0011] The overall acceptance module is used to conduct an overall acceptance test after all installations are completed. Once the test is passed, finished product protection measures are taken.

[0012] The beneficial effects of this invention are as follows: 1. This invention provides a precision installation control system for irregularly shaped curved glass curtain walls. First, the key positions of the main and secondary keels and glass aluminum panels are extracted through the point determination module, and candidate points are planned. Then, three types of deformation simulations are carried out in sequence: static installation, dynamic adjustment, and extreme working conditions. The optimal point is selected, and point control data is constructed based on the deformation simulation. Subsequently, the multi-point electric adjustment device is fixed one-to-one with the optimal installation point through the curtain wall installation module. Relying on the curtain wall measurement and control network, dynamic verification and precise adjustment are realized during the installation of keels and panels. After all installations are completed, the overall acceptance module conducts a comprehensive acceptance. After rectification and closure, standardized finished product protection is implemented, which solves the problems of low installation accuracy, inefficient adjustment, and insufficient safety of irregularly shaped curved glass curtain walls, and ensures the curvature continuity, structural stability, and appearance integrity of the finished curtain wall.

[0013] 2. By extracting the keel connection nodes and key positions of panel overlaps to plan candidate points, and combining static, dynamic and extreme deformation simulations, the optimal combination of points is selected. At the same time, relying on the point control database, the precise mapping of deviation attributes, deviation gradients, installation points and control parameters is achieved. The multi-point electric adjustment device can coordinate the action according to the optimal preload, angle and stroke, avoiding manual rough adjustment, greatly improving the installation accuracy of irregular curved curtain walls, and ensuring the continuity of the curved surface and the uniformity of the panel joints.

[0014] 3. By simulating deformation under extreme working conditions, the ultimate bearing capacity of the points and curtain wall structure is verified by pre-setting minor defects in components, simulating extreme environmental loads and load superposition scenarios; clarifying the pre-tightening force and stress safety thresholds at each point, and monitoring the force and deformation data in real time during the adjustment process to avoid problems such as keel deformation and panel cracking caused by overload, thereby significantly improving the structural safety of curtain wall construction and subsequent use and reducing safety hazards.

[0015] 4. By utilizing the point control database and curtain wall measurement control network, an automated closed loop of three-dimensional measurement, deviation identification, parameter retrieval, and adjustment actions is achieved, eliminating the need for manual experience-based judgment. Multi-point electric adjustment devices work in tandem to replace traditional manual adjustment, dismantling, and reinstallation methods, reducing on-site construction procedures and labor costs. At the same time, point planning and simulation verification rely on digital means to avoid the disconnect between design and construction, further improving construction efficiency and the stability of construction quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the system structure connection of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1 As shown, a precision installation control system based on irregularly shaped curved glass curtain walls includes the following modules: a location determination module, a database construction module, a curtain wall installation module, and an overall acceptance module.

[0020] The point determination module is used to import the BIM design model of the irregular curved glass curtain wall, set the candidate points on the main and secondary keels and panels, and then conduct point deformation simulation tests on the candidate points to determine the set of installation points on the main and secondary keels.

[0021] In one specific embodiment, the point determination module includes a candidate point setting unit and a deformation simulation test unit.

[0022] The candidate point setting unit is used to seamlessly import the BIM design model of the irregular curved glass curtain wall using the built-in standardized BIM model interface, and automatically parse and extract the core installation data of the curtain wall, including keel data, panel data and benchmark data, and then set the candidate points of the main and secondary keels and panels.

[0023] In the above context, keel data refers to the full-dimensional attribute data of the curtain wall support frame (main keel and secondary keel), including three-dimensional coordinates, cross-sectional dimensions, and curved surfaces. Each main keel and each secondary keel are collectively referred to as main and secondary keels.

[0024] Panel data refers to the full-dimensional attribute data of curtain wall cladding components (glass panels and aluminum panels), including shape and three-dimensional dimensions. Glass panels and aluminum panels are collectively referred to as panels.

[0025] Benchmark data refers to unified reference standard data that runs through the entire process of curtain wall design, simulation, installation and acceptance. It is the core basis for ensuring the consistency of various data, the accuracy of simulation and the effectiveness of adjustment, including the three-dimensional coordinates of the benchmark points of the curtain wall measurement control network and the keel curvature deviation threshold, etc.

[0026] The measurement and control network consists of monitoring instruments such as 3D laser scanners and total stations.

[0027] Preferably, the process of setting the candidate points of the main and secondary keels and the panel is as follows: obtain the centroid of the arc surface of each main keel from the keel data, and arrange a number of candidate points symmetrically around the centroid along the arc surface.

[0028] In the above, based on the curved surface of each main keel in the keel data, its centroid is located. Along the arc extension direction of the main keel, with the centroid as the center of symmetry, several candidate points are symmetrically arranged in combination with the connection nodes between the main keel and the main building body and the overlapping nodes with the secondary keel. There are no less than 3 candidate points for the main keel, and the distance between adjacent points along the arc length of the main keel is no more than 2m. Among them, at least 2 points must be arranged adjacent to the key stress nodes (connection nodes, overlapping nodes) of the main keel.

[0029] Obtain the connection nodes at both ends, the overlap center line, and each overlap endpoint of each secondary keel and main keel from the keel data, and then set several candidate points around the connection nodes at both ends, the overlap center line, and each overlap endpoint.

[0030] Extract the two-end connection nodes, overlap center line, and multiple overlap endpoints from each secondary keel in the keel data. Place one candidate point at each of the two-end connection nodes, with the center of the point 50-100mm from the edge of the node. Within 500mm of the midpoint of the overlap center line, arrange two candidate points symmetrically along the arc extension direction of the secondary keel, with a spacing of 200-300mm. Place one candidate point at each overlap endpoint, with a horizontal distance ≤50mm from the overlap endpoint. If the arc length of the secondary keel is >2m, add one intermediate candidate point between the two-end connection node points and the candidate point at the overlap disconnection point, ensuring that the distance between adjacent points along the arc length is ≤1m.

[0031] It should be noted that the location of all candidate points must precisely correspond to the installation position of the panel adapter on the non-visible surface of the secondary keel to avoid conflicts between the points and the adapter.

[0032] The centroid, surface extrema, and stress concentration region of each panel are obtained from the panel data. Then, several candidate points are set for each panel based on the centroid, surface extrema, and stress concentration region.

[0033] Extract the centroid, surface extrema, and stress concentration areas of each panel from the panel data. With the panel centroid as the center, symmetrically arrange candidate points along the orthogonal direction of the panel surface. Each panel has no less than 3 candidate points. Add 1 candidate point at each surface extrema of the panel. The shortest distance between the candidate point and the curved edge of the panel is ≥ 1 / 5 of the short side length of the panel, and a safe distance of ≥ 50 mm is maintained from the stress concentration area.

[0034] It should be noted that the extreme points of the curved surface are the concave and convex vertices, and the stress concentration areas are the openings and chamfered corners. The positions of all candidate points must precisely correspond to the installation positions of the adapters on the non-visible surfaces of the panel to avoid conflicts.

[0035] The deformation simulation test unit is used to conduct point deformation simulation tests using the BIM design model of the irregular curved glass curtain wall. The point deformation simulation test includes static installation deformation simulation, dynamic adjustment deformation simulation and extreme working condition deformation simulation. After the simulation is completed, the simulation results are analyzed to determine the installation point set on the main and secondary keels and each panel.

[0036] In a specific embodiment, the static installation deformation simulation process is as follows: S1-1, extract the three-dimensional models of the main and secondary keels and panels from the BIM design model of the irregular curved glass curtain wall, and import them into the finite element analysis engine; first, perform the adjustment degree of freedom test, eliminate each candidate point that does not meet the degree of freedom, and the remainder enter the next test.

[0037] In the above, the adjustment degree of freedom test is as follows: Horizontal direction: In the finite element analysis engine, the candidate nodes on the main and secondary keels and the panel are bound to the digital model of the multi-point electric adjustment device. With the curtain wall construction coordinate system as the reference, the adjustment device is controlled to apply a constant small driving force along the positive X-axis, and the driving stroke is gradually increased to the preset maximum effective stroke. The load of the adjustment device, the distance between the point and the surrounding components are monitored, and the above operation is repeated to complete the test in the negative X-axis direction and the positive and negative Y-axis directions. If the displacement value in each direction reaches the preset effective stroke, and the load difference between adjacent time is less than the load mutation threshold in the reference data and the distance with the surrounding components remains unchanged, then the horizontal degree of freedom is qualified.

[0038] Vertical direction: Apply a driving load along the positive Z-axis, gradually driving to the preset vertical effective stroke. Collect the deformation parameters of the main and secondary keels and the panel. Repeat the test in reverse and record the data. If the vertical displacement reaches the preset vertical effective stroke and the deformation parameters are within the safe deformation parameter range in the reference data, then the vertical degree of freedom is qualified. Deformation parameters include protrusion length and area, etc.

[0039] Rotation direction: The control adjustment device outputs torque to drive the candidate point to rotate around the X-axis, gradually reaching the preset rotation angle. Torque and stress are collected in real time, and rotation tests and data collection around the Y-axis and Z-axis are completed in sequence. If the rotation angle reaches the preset value, the torque difference between adjacent time intervals is less than the torque mutation threshold in the benchmark data, and the stress is less than the stress threshold in the benchmark data, then the degree of freedom of rotation direction is qualified.

[0040] If the horizontal, vertical, and rotational degrees of freedom are all qualified, it indicates that the degrees of freedom are qualified; otherwise, the degrees of freedom are deemed unqualified.

[0041] It should be noted that the preset maximum effective stroke, preset vertical effective stroke, and preset rotation angle, etc., are all test control parameters that can be set by the user according to the test requirements.

[0042] S1-2. Based on the principle of force balance, the candidate points of qualified primary and secondary keels and panels are combined to generate multiple sets of differentiated point layout schemes as candidate points of each set. The fixing process of the multi-point electric adjustment device and each set of candidate points is simulated in sequence.

[0043] It should be noted that the principle of force balance includes symmetrical distribution constraints, uniform spacing constraints, and node coverage constraints.

[0044] Among them, the symmetry distribution constraint is as follows: with the centroid or centroid as the center of symmetry, the number of points on one side and the adjustment stroke threshold must be consistent with the opposite side, and the symmetry deviation is ≤5%; the spacing uniformity constraint is as follows: the coefficient of variation of the spacing between adjacent points on the same component along the arc length is ≤10%, to avoid the points being too dense or too sparse, and the coefficient of variation = spacing standard deviation / average spacing; the node coverage constraint is as follows: each group of schemes must cover ≥80% of the key stress nodes, including the connection nodes between the main keel and the building body, the connection nodes between the secondary keel and the main keel, and the extreme points of the panel surface.

[0045] Main keel point combination: Taking the centroid of the main keel as the center of symmetry, priority is given to including candidate points at the connecting nodes, and then supplementing the evenly distributed points on both sides of the centroid; the number of main keel points in each scheme is ≥3, and the combination of node points + symmetrical points is satisfied, such as 2 connecting node points + 1 centroid point, or 2 connecting node points + 2 symmetrical points.

[0046] Secondary keel point combination: priority should be given to including candidate points at connection nodes and overlap center lines to ensure that each scheme covers the connection nodes at both ends of the secondary keel; if the span of the secondary keel is greater than 2m, intermediate supplementary points must be included to ensure that the points are evenly distributed along the arc length of the secondary keel.

[0047] Panel point combination: symmetrical combination around the center of gravity of the panel, while including candidate points at the extreme points of the curved surface; the number of panel points in each group of schemes is ≥3, and stress concentration areas are avoided, and the points must correspond to the projection positions of the secondary keel points.

[0048] S1-3. Apply gravitational acceleration to the main and secondary keels and panels in the direction of gravity; apply pre-tightening force at the candidate points in stages, and then collect the support reaction force, vertical deformation, and horizontal deformation of each candidate point in each group of candidate points, and simultaneously collect the stress distribution value around each candidate point.

[0049] The initial preload is 1 times the weight of the keel and panel, increasing by 0.2 times each time, with an upper limit of 2 times the weight. After each loading stage, the load must be maintained for no less than 30 minutes. The preload and holding time for each stage can also be adjusted according to the testing requirements of different scenarios. The above settings are not the only limitations.

[0050] It should be noted that vertical deformation refers to the displacement of the candidate point along the direction perpendicular to the curtain wall facade (Z-axis) during the process of being subjected to force or adjustment; horizontal deformation refers to the displacement of the candidate point along the direction parallel to the curtain wall facade (in the X and Y axis planes) during the process of being subjected to force or adjustment.

[0051] The stress distribution value in the surrounding area is the stress distribution value within a 30mm radius. The surrounding area can also be adjusted according to the testing requirements of different scenarios; this range setting is not the only limitation.

[0052] Preferably, the qualified candidate nodes are screened as follows: the maximum value is selected from the stress distribution values ​​as the maximum stress. If the maximum stress is less than the stress threshold of the corresponding component in the benchmark data, the stress is deemed safe; otherwise, the stress is deemed unsafe. The vertical deformation and horizontal deformation are analyzed to determine whether the deformation is safe, according to the analysis method for stress safety. If the support reaction force value of each candidate point is within the reasonable stress range of the corresponding component in the benchmark data, the stress is deemed safe; otherwise, the stress is deemed abnormal. Candidate nodes that are stress safe, deformation safe, and stress safe are primary qualified nodes. The coefficient of variation of the support reaction force of the primary qualified nodes is calculated. If it is less than the threshold of the coefficient of variation of the support reaction force in the benchmark data, the primary qualified node is determined to be a qualified candidate node; otherwise, it is an unqualified candidate node.

[0053] Among them, the coefficient of variation of support reaction force is calculated as the arithmetic mean and standard deviation of the support reaction force value at each candidate point, denoted as F and S respectively. The coefficient of variation of support reaction force is S ÷ F.

[0054] In another specific embodiment, the process of dynamically adjusting deformation simulation and extreme working condition deformation simulation is as follows: Dynamic adjustment deformation simulation: S2-1, based on the static installation deformation simulation results, select qualified candidate points and use them as target points, and complete the combination and fixation of each group of target points in the manner of S1-3.

[0055] S2-2. Set the gradient adjustment pose parameters and apply the same preset preload to each fixed target point. Adjust the pose of the main and secondary keels and the panel in sequence according to the gradient adjustment pose parameters. After each adjustment, collect the actual pose coordinates, vertical and horizontal deformation of each target point, and simultaneously collect the stress distribution value around each target point.

[0056] It should be noted that the environments for both static and dynamic deformation simulations are fixed preset environments set by the testers, such as a temperature of 25°C.

[0057] It should be noted that during dynamic adjustment, the preload-rotation angle, linear movement distance, and coordinated adjustment ratio of the multi-point electric adjustment device are determined by the system based on the historical effective installation matching dataset of the same type of irregular curved curtain wall and the same specification components, combined with the real-time position and posture deviation data of the components, through interpolation completion, matching call, and closed-loop iterative optimization. The specific process is a conventional technical means in this field and will not be elaborated here.

[0058] Extreme working condition deformation simulation: S3-1, set micro-defects on the main and secondary keels and each panel; and set the environmental data for each set of extreme tests.

[0059] In the above, minor defects are artificially set, including damage and dents. Environmental data of the curtain wall area is acquired, extreme values ​​of each environmental parameter are extracted, and then test values ​​are set. Multiple groups of limit tests are divided according to the principle of single-factor variables. In each group, only one environmental parameter is set as the test value, and the remaining environmental parameters are kept as extreme values.

[0060] The test values ​​are calculated as 1.2 times or 0.8 times the extreme values ​​of each environmental parameter, including wind speed and temperature. Extreme values ​​include maximum and minimum values. The test value is calculated as 1.2 times the maximum value and 0.8 times the minimum value. Environmental data for the curtain wall area is obtained from the meteorological center.

[0061] S3-2. Simulate the corresponding extreme environment based on the environmental data of each group of extreme tests. The target points of each group are simulated and adjusted in accordance with the method of S2-2. After the adjustment is completed, the load is increased step by step according to the gradient. After each load is completed, the pose adjustment operation is repeated. The actual pose coordinates, vertical deformation, horizontal deformation, and stress distribution values ​​around each target point are collected synchronously.

[0062] Among them, the upper limit of the load shall not exceed the load value corresponding to the yield strength of the main and secondary keel or panel material; the load value corresponding to the yield strength of the main and secondary keel or panel material can be obtained from the benchmark data.

[0063] Preferably, the specific process of determining the set of installation points on the main and secondary keels and each panel is as follows: based on the actual pose coordinates, vertical deformation, horizontal deformation and stress distribution around each target point after each adjustment in the dynamic adjustment deformation simulation, the dynamic adjustment deformation characteristic value of each group of target points is calculated.

[0064] Following the analysis method for each qualified candidate node, the analysis determines whether the stress, deformation, and force are safe after each adjustment of the target points in the dynamic deformation simulation. Simultaneously, the actual position coordinates are compared with the position coordinates in the BIM design model to obtain the coordinate deviation value. If the coordinate deviation value is less than the coordinate deviation threshold in the baseline data, the coordinates are considered qualified; otherwise, they are considered unqualified. If the stress, deformation, and force are safe, and the coordinates are qualified, the dynamic adjustment safety value is output as 0; otherwise, the dynamic adjustment deformation characteristic value is output as 1. The coordinate differences between the actual position coordinates and the position coordinates in the BIM design model along the X, Y, and Z axes are denoted as ΔX, ΔY, and ΔZ, respectively, and the coordinate deviation value is... .

[0065] Simultaneously, according to the calculation method of the coefficient of variation of the support reaction force, the coefficient of variation of the support reaction force of each group of target points with a dynamic adjustment safety value of 0 is calculated after each adjustment. The coefficient of variation of the support reaction force, vertical deformation, horizontal deformation and coordinate deviation of each group of target points with a dynamic adjustment safety value of 0 are normalized to the range [0,1]. The dynamic adjustment deformation characteristic value = coefficient of variation of support reaction force × 0.3 + vertical deformation × 0.2 + horizontal deformation × 0.2 + coordinate deviation × 0.3.

[0066] Based on the actual pose coordinates, vertical deformation, horizontal deformation, and stress distribution around each target point in the environment of each group of extreme tests during the extreme working condition deformation simulation, the extreme working condition deformation characteristic values ​​of each group of target points are calculated after each simulation adjustment.

[0067] The deformation characteristic value under extreme working conditions is calculated according to the calculation method of dynamically adjusting the deformation characteristic value.

[0068] Based on the dynamic adjustment deformation characteristic value and the extreme working condition deformation characteristic value of each group of target points, calculate the comprehensive deformation characteristic value of each group of target points, and select each target point in the target point group with the minimum value as the installation point in the installation point set.

[0069] In the above, the comprehensive deformation characteristic value = 0.6 × dynamic adjustment deformation characteristic value + 0.4 × extreme working condition deformation characteristic value.

[0070] The database construction module is used to build a point control database based on the results of point deformation simulation tests.

[0071] In a specific embodiment, the specific process of constructing the point control database is as follows: Based on static installation deformation simulation and extreme working condition deformation simulation, the safety parameter thresholds of the main and secondary keels and each installation point on each panel are determined.

[0072] It should be noted that, in the static installation deformation simulation, when applying preload at each level to each group of candidate points, the real-time stress value, vertical deformation, and horizontal deformation of each candidate point are obtained when applying each level of preload. The preload at each level is extracted from the real-time stress value of each candidate point when the maximum stress is less than the stress threshold of the corresponding component in the benchmark data, and both the vertical deformation and horizontal deformation are 0. The minimum preload is selected as the lower limit threshold of the preload in the normal environment. The preload at each level is extracted from the real-time stress value of each candidate point when the maximum stress is equal to the stress threshold of the corresponding component in the benchmark data, and both the vertical deformation and horizontal deformation are 0. The maximum preload is selected as the upper limit threshold of the preload in the normal environment.

[0073] In the extreme condition deformation simulation, when the load reaches the upper limit, the preload is applied in stages according to the method in the static installation deformation simulation. Then, the upper and lower limits of the preload are confirmed in the extreme environment of each set of extreme tests according to the method for confirming the upper and lower limits of the preload in the static installation deformation simulation.

[0074] Safety parameter thresholds include the upper and lower limits of preload in normal environments, as well as the upper and lower limits of preload in extreme environments for each set of extreme tests.

[0075] Based on dynamic adjustment deformation simulation, the deviation attributes, pose parameters, comprehensive deformation feature values, preload-angle-stroke matching data and coordinated adjustment ratio of each installation point set on the main and secondary keels and each panel are extracted for each adjustment. Then, data analysis is performed to obtain the comprehensive deformation stability value corresponding to each pose parameter in the gradient of each pose parameter in each deviation attribute.

[0076] The deviation attributes mentioned above include horizontal deviation, vertical deviation, curvature deviation, and board seam deviation.

[0077] Pose parameters are comprehensive parameters of position coordinates and attitude angles in three-dimensional space, including three-dimensional coordinate values ​​and deflection angles of the three coordinate axes.

[0078] The preload-angle-stroke matching data refers to the controllable force applied by the multi-point electric adjustment device to the main and secondary keels and panel mounting points, the rotation angle of the multi-point electric adjustment device around the X / Y / Z axes of the coordinate system, and the linear movement distance of the multi-point electric adjustment device.

[0079] The coordinated adjustment ratio refers to the proportional relationship between the preload output value, rotation angle adjustment amount, and linear travel stroke among multiple installation points on the main keel, secondary keel, and panel. All of this information is obtained from the simulation records of the finite element analysis engine.

[0080] Deviation attribute determination process: The coordinate differences ΔX, ΔY, and ΔZ between the actual pose position coordinates and the position coordinates of the X, Y, and Z axes in the BIM design model are determined as follows: If ΔX≠0 or ΔY≠0, it is determined as a horizontal deviation; if ΔZ≠0, it is determined as a vertical deviation. The surface point cloud data of the curved component is collected using the curtain wall measurement control network. The measured curved surface is fitted using software such as CloudCompare to calculate the measured radius of curvature and measured sag, denoted as A1 and B1. The design radius of curvature and design sag of the component in the BIM design model are extracted and denoted as A2 and B2. Curvature deviation = |A1-A2|, sag deviation = |B1-B2|. If the curvature deviation or sag deviation > 0, it is determined as an arc deviation.

[0081] The spacing between adjacent panel edges is collected using a curtain wall measurement control network. The design joint width is extracted from the BIM design model, and the difference between the two is calculated. If the difference is not equal to 0, a joint width deviation is determined. Ten measuring points are evenly selected along the joint length, and the joint width value at each point is collected. The theoretical straight line of the joint is fitted, and the maximum offset of the measured joint relative to the theoretical straight line is calculated. If the offset is greater than 0, a joint straightness deviation is determined. The height difference between the splicing edges of two adjacent panels is measured. If it is greater than 0, a joint height difference deviation is determined. When there is a joint width deviation, a joint straightness deviation, or a joint height difference deviation, it is determined to be a joint deviation. The calculation method for the maximum offset is a conventional technical field and will not be described in detail here.

[0082] Data analysis process: Extract the pose parameters corresponding to each adjustment for each deviation attribute, then divide multiple pose parameter gradients according to the pose parameter gradient, extract the pose parameters, comprehensive deformation feature values, preload-angle-stroke matching data and coordinated adjustment ratio corresponding to each installation point in each pose parameter gradient of each deviation attribute, and then calculate the comprehensive deformation stability value corresponding to each pose parameter in each pose parameter gradient of each deviation attribute based on the safety parameter threshold of each installation point.

[0083] It should be noted that gradients are divided according to the frequency distribution of pose parameters to ensure that the number of samples contained in each gradient is approximately equal.

[0084] Preferably, the comprehensive deformation stability value is as follows: Based on the preload-angle-stroke matching data corresponding to each installation point, if the preload at at least one installation point is not within the upper and lower threshold ranges of the preload in the normal environment of that installation point, then the corresponding adjustment is directly marked as an invalid adjustment. If the preload at each installation point is within the upper and lower threshold ranges of the preload in the normal environment of that installation point, but the preload at at least one installation point is not within the upper and lower threshold ranges of the preload in the extreme environment of each set of extreme tests for that installation point, then the corresponding adjustment is directly marked as a target adjustment, and the rest are effective adjustments; the values ​​of each deviation attribute are statistically analyzed. The number of ineffective adjustments, target adjustments, and effective adjustments are collected from the gradient of each pose parameter. Simultaneously, the comprehensive deformation feature value of each effective adjustment is extracted. The maximum and minimum values ​​are selected, and the difference between the maximum and minimum values ​​is divided by the minimum value to obtain the effective deformation difference rate. Similarly, the comprehensive deformation feature value of each target adjustment is extracted, and the maximum and minimum values ​​are selected. The difference between the maximum and minimum values ​​is divided by the minimum value to obtain the target deformation difference rate. The comprehensive deformation stability value is calculated as follows: Comprehensive deformation stability value = (Number of effective adjustments / Total number of adjustments) × 0.3 + (1 - Effective deformation difference rate) × 0.3 + (Number of target adjustments / Total number of adjustments) × 0.2 + (1 - Target deformation difference rate) × 0.2.

[0085] It should be noted that if the minimum value of the comprehensive deformation characteristic value is 0, the data should be removed.

[0086] For each pose parameter whose overall deformation stability value is greater than the preset stability value threshold, the preload-angle-stroke matching data and coordinated adjustment ratio corresponding to each installation point are selected as the preferred pose adjustment parameters for the gradient of each pose parameter in each deviation attribute. They are then sorted in descending order of the overall deformation stability value and entered into the point control database.

[0087] It should be noted that the preset stability threshold is set by professionals according to safety installation requirements.

[0088] The curtain wall installation module is used to install and fix the multi-point electric adjustment device one by one with the installation point set on the main and secondary keels and the installation point set of each panel. During the installation process, the curtain wall measurement control network and the point control database are used to perform dynamic verification and adjustment simultaneously.

[0089] The installation process described above, which involves simultaneous dynamic verification and adjustment using the curtain wall measurement and control network, is as follows: First, the main keel is hoisted to its preset installation position for initial installation. Then, the monitoring program of the curtain wall measurement and control network is activated: a 3D laser scanner performs a full-range scan of the main keel, collecting its actual 3D coordinates and curvature data. This data is transmitted to the central processing unit for comparison with the BIM design model. The positional deviation data of the main keel is analyzed, and positional adjustment parameters are output using the deviation data and the point deviation database. These parameters are then fed back to the control center of the multi-point electric adjustment device for positional adjustment of the main keel. During the positional adjustment process, the positional adjustment is repeated according to the analysis and control method of the aforementioned positional adjustment parameters.

[0090] The secondary keel and panel shall be installed, dynamically verified and adjusted in accordance with the installation, dynamic verification and adjustment process of the main keel.

[0091] Preferably, the specific process of outputting the pose adjustment parameters is as follows: determine the deviation attribute, and extract the preferred pose adjustment parameters of the pose parameter gradient of the main keel in the deviation attribute from the point deviation database, which are denoted as template pose adjustment parameters. Select the preload-angle-stroke matching data and coordinated adjustment ratio corresponding to each installation point corresponding to the first sorting as pose adjustment parameters.

[0092] The deviation attribute is determined according to the above deviation attribute determination process.

[0093] The pose deviation data has the same data type as the pose parameters.

[0094] The overall acceptance module is used to conduct an overall acceptance test after all installations are completed. Once the test is passed, finished product protection measures are taken.

[0095] In one specific embodiment, the overall acceptance module includes an acceptance unit, which is used to activate the three-dimensional laser scanner and total station in the measurement control network to conduct all-round field measurements of the curtain wall, obtain acceptance data for the keel and the panels, and then process the acceptance data for the keel and the panels to analyze the installation quality of the curtain wall. If the installation quality is qualified, the acceptance is qualified; otherwise, the data is fed back to the control center to indicate that the quality is unqualified and to conduct manual review.

[0096] Preferably, the acceptance data for keel structures are quantitative data reflecting the safety and installation accuracy of the main and secondary keel structures, including the vertical and horizontal elastic deformation of the keels and the length of the gap between adjacent keels. The acceptance data for panels are quantitative data reflecting the appearance quality, installation fit, and physical properties, including scratches on the panel surface, the size of bubbles, and deviations in panel seams.

[0097] Data processing: Obtain the acceptable ranges for keel-type and panel-type acceptance data from the benchmark data. If both the keel-type and panel-type acceptance data fall within their respective acceptable ranges, the quality is deemed acceptable; otherwise, the quality is deemed unacceptable.

[0098] The overall acceptance module also includes a protection unit, which is used to implement protective measures on the curtain wall, including affixing a special protective film, applying a special protective coating, setting up a protective fence, and conducting regular all-round measurements of the measurement control network.

[0099] The examples described in this invention are not limited to the specific embodiments listed above. The examples are merely illustrative to facilitate understanding of the invention and do not constitute a limitation on the scope of protection of this invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of this invention should be included within the scope of protection.

[0100] The above description is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they should all fall within the protection scope of the present invention.

Claims

1. A precision installation control system for irregularly shaped curved glass curtain walls, characterized in that, Includes the following modules: The point determination module is used to import the BIM design model of the irregular curved glass curtain wall, set the candidate points on the main and secondary keels and panels, and then conduct point deformation simulation tests on the candidate points to determine the set of installation points on the main and secondary keels. The database construction module is used to build a point control database based on the results of point deformation simulation tests. Point deformation simulation tests include static installation deformation simulation, dynamic adjustment deformation simulation, and extreme working condition deformation simulation; The specific process for constructing the point control database is as follows: Based on static installation deformation simulation and extreme working condition deformation simulation, the safety parameter thresholds of the main and secondary keels and each installation point on each panel are determined. Based on dynamic adjustment deformation simulation, the deviation attributes, pose parameters, comprehensive deformation feature values, preload-angle-stroke matching data and coordinated adjustment ratio of each installation point set on the main and secondary keels and each panel are extracted for each adjustment. Then, data analysis is performed to obtain the comprehensive deformation stability value corresponding to each pose parameter in the gradient of each pose parameter in each deviation attribute. For each pose parameter whose overall deformation stability value is greater than the preset stability value threshold, select the preload-angle-stroke matching data and coordinated adjustment ratio corresponding to each installation point as the preferred pose adjustment parameter for each pose parameter gradient in each deviation attribute, and sort them in descending order of overall deformation stability value, and then enter them into the point control database. The curtain wall installation module is used to install and fix the multi-point electric adjustment device one by one with the installation point set on the main and secondary keels and the installation point set of each panel. During the installation process, the curtain wall measurement control network and the point control database are used to perform dynamic verification and adjustment simultaneously. The overall acceptance module is used to conduct an overall acceptance test after all installations are completed. Once the test is passed, finished product protection measures are taken.

2. The precision installation control system based on irregularly shaped curved glass curtain walls according to claim 1, characterized in that, The point determination module includes a candidate point setting unit and a deformation simulation test unit; The candidate point setting unit is used to seamlessly import the BIM design model of the irregular curved glass curtain wall using the built-in standardized BIM model interface, and automatically parse and extract the core installation data of the curtain wall, including keel data, panel data and benchmark data, and then set the candidate points of the main and secondary keels and panels. The deformation simulation test unit is used to conduct point deformation simulation tests using the BIM design model of the irregular curved glass curtain wall. After the simulation is completed, the simulation results are analyzed to determine the set of installation points on the main and secondary keels and each panel.

3. The precision installation control system based on irregularly shaped curved glass curtain walls according to claim 2, characterized in that, The process of setting the candidate points for the primary and secondary keels and the panel is as follows: Obtain the centroid of the arc-shaped surface of each main keel from the keel data, and arrange several candidate points symmetrically around the centroid along the arc-shaped surface; Obtain the connection nodes at both ends, the overlap center line, and each overlap endpoint of each secondary keel and main keel from the keel data, and then set several candidate points around the connection nodes at both ends, the overlap center line, and each overlap endpoint. The centroid, surface extrema, and stress concentration region of each panel are obtained from the panel data. Then, several candidate points are set for each panel based on the centroid, surface extrema, and stress concentration region.

4. The precision installation control system for irregularly shaped curved glass curtain walls according to claim 2, characterized in that, The process of static installation deformation simulation is as follows: S1-1. Extract the 3D models of the main and secondary keels and panels from the BIM design model of the irregular curved glass curtain wall and import them into the finite element analysis engine. First, perform the adjustment degree of freedom test, eliminate the candidate points that do not meet the degree of freedom, and the rest will proceed to the next test. S1-2. Based on the principle of force balance, the candidate points of qualified primary and secondary keels and panels are combined to generate multiple sets of differentiated point layout schemes as candidate points of each set. The fixing process of the multi-point electric adjustment device and each set of candidate points is simulated in sequence. S1-3. Apply gravitational acceleration to the main and secondary keels and panels in the direction of gravity; apply pre-tightening force at candidate points in stages, and then collect the support reaction force, vertical deformation, and horizontal deformation of each candidate point in each group of candidate points, and simultaneously collect the stress distribution value around each candidate point.

5. A precision installation control system for irregularly shaped curved glass curtain walls according to claim 4, characterized in that, The process of dynamically adjusting deformation simulation and extreme condition deformation simulation is as follows: Dynamic adjustment deformation simulation: S2-1. Based on the static installation deformation simulation results, select qualified candidate points and use them as target points. Refer to S1-3 to complete the combination and fixation of each group of target points. S2-2. Set the gradient adjustment pose parameters, and then adjust them according to the gradient adjustment pose parameters. After each adjustment, collect the actual pose coordinates, vertical and horizontal deformation of each target point, and simultaneously collect the stress distribution value around each target point. Extreme working condition deformation simulation: S3-1, Set micro-defects on the main and secondary keels and each panel; and set the environmental data for each set of extreme tests; S3-2. Simulate the corresponding extreme environment based on the environmental data of each group of extreme tests. The target points of each group are simulated and adjusted in accordance with the method of S2-2. After the adjustment is completed, the load is increased step by step according to the gradient. After each load is completed, the pose adjustment operation is repeated. The actual pose coordinates, vertical deformation, horizontal deformation, and stress distribution values ​​around each target point are collected synchronously.

6. The precision installation control system for irregularly shaped curved glass curtain walls according to claim 5, characterized in that, The specific process for determining the main and secondary keels and the set of installation points on each panel is as follows: Based on the actual pose coordinates, vertical deformation, horizontal deformation, and stress distribution around each target point after each adjustment in the dynamic adjustment deformation simulation, the dynamic adjustment deformation characteristic values ​​of each group of target points are calculated. Based on the actual pose coordinates, vertical deformation, horizontal deformation, and stress distribution around each target point in the environment of each set of extreme tests in the extreme working condition deformation simulation, the extreme working condition deformation characteristic values ​​of each set of target points are calculated after each simulation adjustment. Based on the dynamic adjustment deformation characteristic value and the extreme working condition deformation characteristic value of each group of target points, calculate the comprehensive deformation characteristic value of each group of target points, and select each target point in the target point group with the minimum value as the installation point in the installation point set.

7. The precision installation control system based on irregularly shaped curved glass curtain walls according to claim 1, characterized in that, The installation process, which involves simultaneously performing dynamic verification and adjustment using the curtain wall measurement and control network, is as follows: First, the main keel is hoisted to its preset installation position for initial installation. Then, the monitoring program of the curtain wall measurement and control network is started: the 3D laser scanner scans the main keel from all directions, collects its actual 3D coordinates and curvature data, transmits it to the central processing unit for comparison with the BIM design model, analyzes the positional deviation data of the main keel, and uses the deviation data and point deviation database to output the positional adjustment parameters. Then, it is fed back to the control center of the multi-point electric adjustment device to adjust the positional orientation of the main keel. During the positional adjustment process, the positional orientation is repeatedly adjusted according to the analysis and control method of the positional adjustment parameters. The secondary keel and panel shall be installed, dynamically verified and adjusted in accordance with the installation, dynamic verification and adjustment process of the main keel.

8. A precision installation control system for irregularly shaped curved glass curtain walls according to claim 7, characterized in that, The specific process for adjusting the output pose parameters is as follows: Determine the deviation attribute, and extract the preferred posture adjustment parameter of the posture parameter gradient of the main keel in the deviation attribute from the point deviation database. Record it as the template posture adjustment parameter. Select the preload-angle-stroke matching data and coordinated adjustment ratio corresponding to each installation point corresponding to the first sorted position as the posture adjustment parameter.

9. A precision installation control system for irregularly shaped curved glass curtain walls according to claim 1, characterized in that, The overall acceptance module includes an acceptance unit, which is used to activate the three-dimensional laser scanner and total station in the measurement control network to conduct all-round field measurements of the curtain wall, obtain acceptance data for the keel and the panels, and then process the acceptance data for the keel and the panels to analyze the installation quality of the curtain wall. If the installation quality is qualified, the acceptance is qualified; otherwise, the data is fed back to the control center to indicate that the quality is unqualified and to conduct manual review. The overall acceptance module also includes a protection unit, which is used to implement protective measures on the curtain wall, including affixing a special protective film, applying a special protective coating, setting up a protective fence, and conducting regular all-round measurements of the measurement control network.

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