Elliptical surface glass curtain wall installation positioning method based on BIM

Abstract

The application discloses a kind of ellipsoidal curved surface glass curtain wall installation positioning methods of BIM, comprising the following steps: according to the design parameters of curtain wall installation plane, construct curtain wall installation plane model and curved surface glass curtain wall model, construct correction constraint condition, correct the relative position between curtain wall installation plane model and curved surface glass curtain wall model in space three-dimensional coordinate system, realize the correction of the installation position of the whole curved surface glass curtain wall model;The stability of each curved surface glass curtain wall installation block is evaluated using the size parameters of the curved surface glass curtain wall installation block, and the connection points between the curved surface glass curtain wall installation block and the installation fixing frame are planned;Construction personnel install the curved surface glass curtain wall installation block on the curtain wall installation plane according to the installation sequence of the planned curved surface glass curtain wall installation block, and measure the coordinate error of the connection point of the last installed curved surface glass curtain wall installation block to correct the connection point coordinate of the next installed curved surface glass curtain wall installation block.

Description

Technical Field

[0001] This invention relates to the field of irregular glass curtain wall design and construction, specifically to a BIM-based method for the installation and positioning of ellipsoidal curved glass curtain walls. Background Technology

[0002] With the increasing diversification and personalization of modern architectural design, ellipsoidal curved glass curtain walls have been widely used in many large-scale buildings. However, while pursuing aesthetics, their complex curved shape and irregular design present numerous challenges during installation and positioning. Traditional installation and positioning methods often rely on on-site measurements and experience-based judgment, making it difficult to accurately determine the installation position of each glass curtain wall panel. This can easily lead to the accumulation of installation errors, affecting the overall aesthetics, sealing, and structural stability of the curtain wall, and also resulting in low construction efficiency and high costs. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, this invention provides a BIM-based method for the installation and positioning of ellipsoidal curved glass curtain walls. By establishing a model in BIM software, high-precision installation and positioning of ellipsoidal curved glass curtain walls can be achieved during the installation design process.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0005] A BIM-based method for installing and positioning ellipsoidal curved glass curtain walls is provided, comprising the following steps:

[0006] S1: Based on the design parameters of the curtain wall installation plane, construct the curtain wall installation plane model and the curved glass curtain wall model in the BIM software, construct the correction constraints, and correct the relative position between the curtain wall installation plane model and the curved glass curtain wall model in the three-dimensional coordinate system to achieve the correction of the overall installation position of the curved glass curtain wall model.

[0007] S2: Evaluate the stability of the curved glass curtain wall mounting blocks using the dimensional parameters of each curved glass curtain wall mounting block, and plan the connection points between the curved glass curtain wall mounting blocks and the mounting brackets;

[0008] S3: According to the planned installation sequence of the curved glass curtain wall installation blocks, the construction personnel install the curved glass curtain wall installation blocks on the curtain wall installation plane, and measure the coordinate error of the connection point of the previously installed curved glass curtain wall installation block to correct the coordinate of the connection point of the next curved glass curtain wall installation block to be installed.

[0009] Further, step S1 includes:

[0010] S11: Construct a curtain wall installation plane model in BIM software based on the design parameters of the curtain wall installation plane, and construct a curved glass curtain wall model on the curtain wall installation plane model based on the design parameters of the curved glass curtain wall;

[0011] S12: On the curved glass curtain wall model, uniformly divide it into n correction units, and uniformly divide the curtain wall installation plane model into n positioning units. Construct a three-dimensional coordinate system and obtain the coordinates (x, y, y) of the center of each correction unit and the center of each positioning unit in the three-dimensional coordinate system. n ,y n ,z n ), (X n ,X n ,X n This ensures that the spatial three-dimensional coordinate system coincides with the on-site construction three-dimensional coordinate system of the curved glass curtain wall;

[0012] S13: Calculate the distance between the center of the correction unit and the center of the corresponding positioning unit below, correct the relative position between the curved glass curtain wall model and the curtain wall installation plane model, and thus realize the correction of the overall installation position of the curved glass curtain wall model. The correction process satisfies the constraint conditions.

[0013]

[0014] Where A is the set of center coordinates of the correction unit, N is the number of correction units, and d n～n-1 The straight-line distance between the centers of two adjacent positioning units, determined from the design dimensions;

[0015] S14: Complete the correction of the overall installation position of the curved glass curtain wall model.

[0016] Further, step S2 includes:

[0017] S21: Based on the design dimensions of each curved glass curtain wall installation block, the curved glass curtain wall model is divided into several installation reference units; the stability coefficient f of the corresponding curved glass curtain wall installation block is calculated based on the size parameters of each installation reference unit.

[0018]

[0019] Wherein, β0 is the stress coefficient, β1 is the wind vibration coefficient, μ1 is the curved surface wind load shape coefficient of the curved glass curtain wall mounting block, μ2 is the wind pressure height variation coefficient of the curved glass curtain wall mounting block at the corresponding installation height, ω0 is the base wind pressure, b is the short side length of the curved glass curtain wall mounting block, t is the thickness of the curved glass curtain wall mounting block, σ0 is the maximum stress that the curved glass curtain wall mounting block can withstand, α is the seismic influence coefficient, M is the self-weight of the curved glass curtain wall mounting block, γ is the gravity equivalence coefficient, ε1 and ε2 are the influence weight coefficients on the stability of the curved glass curtain wall mounting block under wind and seismic action, respectively, and F0 is the seismic stress of the curved glass curtain wall mounting block;

[0020] S22: Set the stability coefficient threshold f for the curved glass curtain wall mounting blocks. 阈值 ;

[0021] If f≤f 阈值 If the structural stability of the curved glass curtain wall mounting block meets the requirements, the mounting brackets at the four top corners of the curved glass curtain wall mounting block have met the stability requirements.

[0022] If f>f 阈值 If the structural stability of the curved glass curtain wall mounting block is not met, it is determined that an additional mounting bracket needs to be added at the center point of the curved glass curtain wall mounting block to increase the structural stability of the curved glass curtain wall mounting block after installation.

[0023] Further, step S3 includes:

[0024] S31: Based on the planned connection points between the mounting bracket and the curved glass curtain wall mounting block, mark the equivalent connection points on the installation reference unit at equivalent positions, and obtain the coordinates of each equivalent connection point;

[0025] S32: After the installation position of the curved glass curtain wall model is corrected, obtain the installation coordinates of the mounting brackets of each curved glass curtain wall installation block on the curtain wall installation plane, and refer to the construction three-dimensional coordinate system on site to install the mounting brackets on the corresponding installation coordinates; the mounting brackets use the four top corners of each curved glass curtain wall installation block as connection points, and the mounting brackets are perpendicular to the curtain wall installation plane.

[0026] S33: Construction personnel plan the installation sequence of curved glass curtain wall installation blocks, install curved glass curtain wall installation blocks on the curtain wall installation plane, and after the previous curved glass curtain wall installation block is installed, measure the coordinates (x0, y0, z0) of the actual connection point based on the construction three-dimensional coordinate system.

[0027] S34: Calculate the coordinate difference between the actual connection point coordinates (x0, y0, z0) and the corresponding equivalent connection point coordinates (x′0, y′0, z′0) (Δx, Δy, Δz) = (x0-x′0, y0-y′0, z0-z′0);

[0028] S35: Based on all the equivalent connection points on the next curved glass curtain wall mounting block to be installed, calculate the distance between each equivalent connection point i and the actual connection point. (x i ,y i ,z i Let be the coordinates of the i-th equivalent connection point on the next curved glass curtain wall mounting block to be installed, and obtain the distance data set (d1, d2, ..., d...). i );

[0029] S36: Filter out distance data groups (d1, d2, ..., d... i The minimum value d in ) min The corresponding equivalent connection point coordinates (x) imin ,y imin ,z imin Based on the coordinate difference values ​​(Δx, Δy, Δz), the equivalent connection point coordinates (x) are calculated. imin ,y imin ,z imin The corrected equivalent connection point coordinates (x, y) are obtained on the next curved glass curtain wall mounting block to be installed. i ′ min ,y i ′ min ,z i ′ min );

[0030] (x i ′ min ,y i ′ min ,z i ′ min )=(x i ′ min +Δx,y i ′ min +Δy,z i ′ min +Δz);

[0031] S37: Determine the corrected equivalent connection point coordinates (x) i ′ min ,y i ′ min ,z i ′ minIs it within the area enclosed by the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed? If so, the next curved glass curtain wall mounting block to be installed will be based on the equivalent connection point coordinates (x... i ′ min ,y i ′ min ,z i ′ min If the reference connection point is ), proceed to step S38; otherwise, proceed to step S310.

[0032] S38: Based on the coordinates (x) of the reference connection point i ′ min ,y i ′ min ,z i ′ min ) and the corresponding installation coordinates below (X) imin ,Y imin Z imin Establish the equation of the line connecting the two lines;

[0033]

[0034] S39: Draw the straight line connecting the two in the three-dimensional coordinate system and extend it to intersect the installation reference unit. The point of intersection is used as the first connection point when installing the next curved glass curtain wall installation block. During the installation of the next curved glass curtain wall installation block, first connect it to the installation bracket below through the first connection point to achieve positioning, and then connect the other connection points to the installation bracket.

[0035] S310: Move the mounting bracket to the position on the curtain wall mounting plane and connect the original connection point on the next curved glass curtain wall mounting block to be installed to the mounting bracket.

[0036] Furthermore, determine the equivalent connection point coordinates (x... i ′ min ,y i ′ min ,z i ′ min The method for determining whether a location is within the area enclosed by the mounting reference unit is as follows:

[0037] S371: Obtain the coordinates (x, y) of m uniformly distributed points on the boundary of the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed. m ,y m ,z m Projecting m points onto the xoy plane, the coordinates of the m projected points (x, y, y) are given. m ,y m ,0);

[0038] S372: Use the maximum and minimum coordinates of the m projected points as regional constraints;

[0039]

[0040] S373: Equivalent connection point coordinates (x i ′ min ,y i ′ min ,z i ′ min The coordinates of the connection point are also projected onto the xoy plane, yielding the equivalent projection coordinates (x...). i ′ min ,y i ′ min ,0);

[0041] If x satisfies imin ∈[x min ,x max And y imin [y min ,y max If the x-axis is the equivalent connection point coordinate (x-axis), then determine the equivalent connection point coordinate (x-axis). i ′ min ,y i ′ min ,z i ′ min Within the area enclosed by the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed; otherwise, determine the equivalent connection point coordinates (x... i ′ min ,y i ′ min ,z i ′ min It is not within the area enclosed by the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed.

[0042] The beneficial effects of this invention are as follows: By constructing models of the curved glass curtain wall and the installation plane of the curtain wall in BIM software, this invention designs the installation position of each different curved glass curtain wall installation block and achieves precise positioning, obtaining the positioning coordinates of the installation position. During the installation process, based on the designed installation sequence, the installation error of the previous curved glass curtain wall installation block can be used to correct the connection point position of the curved glass curtain wall installation block to be installed, realizing dynamic correction of the installation process, avoiding the accumulation of errors that would reduce the overall installation quality of the curved glass curtain wall, and simultaneously considering the stability of the curved glass curtain wall, this invention can effectively improve the accuracy of glass curtain wall installation positioning, reduce construction and installation errors, improve construction efficiency, and reduce construction costs. Attached Figure Description

[0043] Figure 1 This is a flowchart of a BIM-based method for installing and positioning ellipsoidal curved glass curtain walls. Detailed Implementation

[0044] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0045] like Figure 1 As shown, a BIM-based method for installing and positioning an ellipsoidal curved glass curtain wall includes the following steps:

[0046] S1: Based on the design parameters of the curtain wall installation plane, construct the curtain wall installation plane model and the curved glass curtain wall model in BIM software, establish and correct constraints, and correct the relative position between the curtain wall installation plane model and the curved glass curtain wall model in a three-dimensional coordinate system to achieve the correction of the overall installation position of the curved glass curtain wall model. Step S1 specifically includes:

[0047] S11: Construct a curtain wall installation plane model in BIM software based on the design parameters of the curtain wall installation plane, and construct a curved glass curtain wall model on the curtain wall installation plane model based on the design parameters of the curved glass curtain wall;

[0048] S12: On the curved glass curtain wall model, uniformly divide it into n correction units, and uniformly divide the curtain wall installation plane model into n positioning units. Construct a three-dimensional coordinate system and obtain the coordinates (x, y, y) of the center of each correction unit and the center of each positioning unit in the three-dimensional coordinate system. n ,y n ,z n ), (X n ,X n ,X n This ensures that the spatial three-dimensional coordinate system coincides with the on-site construction three-dimensional coordinate system of the curved glass curtain wall;

[0049] S13: Calculate the distance between the center of the correction unit and the center of the corresponding positioning unit below, correct the relative position between the curved glass curtain wall model and the curtain wall installation plane model, and thus realize the correction of the overall installation position of the curved glass curtain wall model. The correction process satisfies the constraint conditions.

[0050]

[0051] Where A is the set of center coordinates of the correction unit, N is the number of correction units, and d n～n-1 The straight-line distance between the centers of two adjacent positioning units, determined from the design dimensions;

[0052] In the spatial three-dimensional coordinate system within BIM software, the installation position is corrected by moving the curved glass curtain wall model. Ideally, the line connecting the center of the correction unit and the center of the positioning unit should be perpendicular to both units. This ensures sufficient stability when connecting the mounting bracket to the curved glass curtain wall and reduces installation difficulty. Since both the positioning and correction units may be curved surfaces, fine-tuning the moving curved glass curtain wall model minimizes the distance between their centers, ensuring the alignment of as many correction and positioning units as possible.

[0053] S14: Complete the correction of the overall installation position of the curved glass curtain wall model.

[0054] S2: Evaluate the stability coefficient of each curved glass curtain wall mounting block based on its dimensional parameters, and plan the connection points between the curved glass curtain wall mounting blocks and the mounting brackets. Step S2 specifically includes:

[0055] S21: Based on the design dimensions of each curved glass curtain wall installation block, the curved glass curtain wall model is divided into several installation reference units; the stability coefficient f of the corresponding curved glass curtain wall installation block is calculated based on the size parameters of each installation reference unit.

[0056]

[0057] Wherein, β0 is the stress coefficient, β1 is the wind vibration coefficient, μ1 is the curved surface wind load shape coefficient of the curved glass curtain wall mounting block, μ2 is the wind pressure height variation coefficient of the curved glass curtain wall mounting block at the corresponding installation height, ω0 is the base wind pressure, b is the short side length of the curved glass curtain wall mounting block, t is the thickness of the curved glass curtain wall mounting block, σ0 is the maximum stress that the curved glass curtain wall mounting block can withstand, α is the seismic influence coefficient, M is the self-weight of the curved glass curtain wall mounting block, γ is the gravity equivalence coefficient, ε1 and ε2 are the influence weight coefficients on the stability of the curved glass curtain wall mounting block under wind and seismic action, respectively, and F0 is the seismic stress of the curved glass curtain wall mounting block;

[0058] S22: Set the stability coefficient threshold f for the curved glass curtain wall mounting blocks. 阈值 ;

[0059] If f≤f 阈值 If the structural stability of the curved glass curtain wall mounting block meets the requirements, the mounting brackets at the four top corners of the curved glass curtain wall mounting block have met the stability requirements.

[0060] If f>f 阈值 If the structural stability of the curved glass curtain wall mounting block is not met, it is determined that an additional mounting bracket needs to be added at the center point of the curved glass curtain wall mounting block to increase the structural stability of the curved glass curtain wall mounting block after installation.

[0061] S3: Construction workers install the curved glass curtain wall mounting blocks on the curtain wall mounting plane according to the planned installation sequence. They then measure the coordinate error of the connection points of the previously installed curved glass curtain wall mounting block to correct the coordinates of the connection points of the next curved glass curtain wall mounting block to be installed. Step S3 specifically includes:

[0062] S31: Based on the planned connection points between the mounting bracket and the curved glass curtain wall mounting block, mark the equivalent connection points on the installation reference unit at equivalent positions, and obtain the coordinates of each equivalent connection point;

[0063] S32: After the installation position of the curved glass curtain wall model is corrected, obtain the installation coordinates of the mounting brackets of each curved glass curtain wall installation block on the curtain wall installation plane, and refer to the construction three-dimensional coordinate system on site to install the mounting brackets on the corresponding installation coordinates; the mounting brackets use the four top corners of each curved glass curtain wall installation block as connection points, and the mounting brackets are perpendicular to the curtain wall installation plane.

[0064] S33: Construction personnel plan the installation sequence of curved glass curtain wall installation blocks, install curved glass curtain wall installation blocks on the curtain wall installation plane, and after the previous curved glass curtain wall installation block is installed, measure the coordinates (x0, y0, z0) of the actual connection point based on the construction three-dimensional coordinate system.

[0065] S34: Calculate the coordinate difference between the actual connection point coordinates (x0, y0, z0) and the corresponding equivalent connection point coordinates (x′0, y′0, z′0) (Δx, Δy, Δz) = (x0-x′0, y0-y′0, z0-z′0);

[0066] S35: Based on all the equivalent connection points on the next curved glass curtain wall mounting block to be installed, calculate the distance between each equivalent connection point i and the actual connection point. (x i ,y i ,z i Let be the coordinates of the i-th equivalent connection point on the next curved glass curtain wall mounting block to be installed, and obtain the distance data set (d1, d2, ..., d...). i );

[0067] In the actual installation process of curved glass curtain walls, the whole is divided into several curved glass curtain wall installation blocks. Based on the convenience of actual installation operation, the construction personnel will plan an installation path for sequential installation. This invention can correct the equivalent connection point of the next curved glass curtain wall installation block to be installed based on the error of the previous installed curved glass curtain wall installation block, thereby correcting the installation position.

[0068] S36: Filter out distance data groups (d1, d2, ..., d... i The minimum value d in ) min The corresponding equivalent connection point coordinates (x) imin ,y imin ,z imin Based on the coordinate difference values ​​(Δx, Δy, Δz), the equivalent connection point coordinates (x) are calculated. imin ,y imin ,z imin The correction is performed to obtain the corrected equivalent connection point coordinates (xi′min, yi′min, zi′min) on the next curved glass curtain wall mounting block to be installed; minimum value d min The corresponding equivalent connection point is closest to the equivalent connection point on the previous installed curved glass curtain wall block. Therefore, the connection point of the next block is corrected using the principle of proximity to reduce the probability of errors.

[0069] (x i ′ min ,y i ′ min ,z i ′ min )=(x i ′ min +Δx,y i ′ min +Δy,z i ′ min +Δz);

[0070] S37: Determine the corrected equivalent connection point coordinates (x) i ′ min ,y i ′ min ,z i ′ min Is it within the area enclosed by the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed? If so, the next curved glass curtain wall mounting block to be installed will be based on the equivalent connection point coordinates (x... i ′ min ,y i ′ min ,z i ′ minIf the reference connection point is selected, proceed to step S38; otherwise, proceed to step S310.

[0071] If the installation error of the previous curved glass curtain wall mounting block is large, it will cause a large coordinate error of the actual connection point on it. During the correction of the next connection point, over-correction or correction failure may occur. Therefore, this invention introduces a process to check whether the coordinates of the corrected equivalent connection point are within the area enclosed by the corresponding installation reference unit, thereby reducing the correction error.

[0072] Determine the equivalent connection point coordinates (x) i ′ min ,y i ′ min ,z i ′ min The method for determining whether a location is within the area enclosed by the mounting reference unit is as follows:

[0073] S371: Obtain the coordinates (x, y) of m uniformly distributed points on the boundary of the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed. m ,y m ,z m Projecting m points onto the xoy plane, the coordinates of the m projected points (x, y, y) are given. m ,y m ,0);

[0074] S372: Use the maximum and minimum coordinates of the m projected points as regional constraints;

[0075]

[0076] S373: Equivalent connection point coordinates (x i ′ min ,y i ′ min ,z i ′ min The coordinates of the connection point are also projected onto the xoy plane, yielding the equivalent projection coordinates (x...). i ′ min ,y i ′ min ,0);

[0077] If x satisfies imin ∈[x min ,x max And y imin [y min ,y max If the x-axis is the equivalent connection point coordinate (x-axis), then determine the equivalent connection point coordinate (x-axis). i ′ min ,y i ′ min ,zi ′ min Within the area enclosed by the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed; otherwise, determine the equivalent connection point coordinates (x... i ′ min ,y i ′ min ,z i ′ min It is not within the area enclosed by the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed;

[0078] S310: Move the mounting bracket to the position on the curtain wall mounting plane and connect the original connection point on the next curved glass curtain wall mounting block to be installed to the mounting bracket.

[0079] S38: Based on the coordinates (x) of the reference connection point i ′ min ,y i ′ min ,z i ′ min ) and the corresponding installation coordinates below (X) imin ,Y imin Z imin Establish the equation of the line connecting the two lines;

[0080]

[0081] S39: Draw the straight line connecting the two in the three-dimensional coordinate system and extend it to intersect the installation reference unit. The point of intersection is used as the first connection point when installing the next curved glass curtain wall installation block. During the installation of the next curved glass curtain wall installation block, first connect it to the installation bracket below through the first connection point to achieve positioning, and then connect the other connection points to the installation bracket.

[0082] This invention designs the installation positions of each curved glass curtain wall mounting block by constructing a model of the curved glass curtain wall and a model of the curtain wall installation plane in BIM software. It can achieve precise positioning and obtain the positioning coordinates of the installation position. During the installation process, based on the designed installation sequence, the connection point positions of the curved glass curtain wall mounting blocks to be installed can be corrected by using the installation error of the previous curved glass curtain wall mounting block. This achieves dynamic correction during the installation process, avoids the accumulation of errors that would reduce the overall installation quality of the curved glass curtain wall, and simultaneously considers the stability of the curved glass curtain wall. It can effectively improve the accuracy of glass curtain wall installation positioning, reduce construction and installation errors, increase construction efficiency, and reduce construction costs.

Claims

1. A BIM-based installation and positioning method for ellipsoidal curved glass curtain walls, characterized in that, Includes the following steps: S1: Based on the design parameters of the curtain wall installation plane, construct the curtain wall installation plane model and the curved glass curtain wall model in the BIM software, construct the correction constraints, and correct the relative position between the curtain wall installation plane model and the curved glass curtain wall model in the three-dimensional coordinate system to achieve the correction of the overall installation position of the curved glass curtain wall model. S2: Evaluate the stability of the curved glass curtain wall mounting blocks using the dimensional parameters of each curved glass curtain wall mounting block, and plan the connection points between the curved glass curtain wall mounting blocks and the mounting brackets; S3: According to the planned installation sequence of the curved glass curtain wall installation blocks, the construction personnel install the curved glass curtain wall installation blocks on the curtain wall installation plane, and measure the coordinate error of the connection point of the previous installed curved glass curtain wall installation block to correct the coordinate of the connection point of the next curved glass curtain wall installation block to be installed. Step S3 includes: S31: Based on the planned connection points between the mounting bracket and the curved glass curtain wall mounting block, mark the equivalent connection points on the installation reference unit at equivalent positions, and obtain the coordinates of each equivalent connection point; S32: After the installation position of the curved glass curtain wall model is corrected, obtain the installation coordinates of the mounting brackets of each curved glass curtain wall installation block on the curtain wall installation plane, and refer to the construction three-dimensional coordinate system on site to install the mounting brackets on the corresponding installation coordinates; the mounting brackets use the four top corners of each curved glass curtain wall installation block as connection points, and the mounting brackets are perpendicular to the curtain wall installation plane. S33: Construction personnel plan the installation sequence of curved glass curtain wall installation blocks, install the curved glass curtain wall installation blocks on the curtain wall installation plane, and after the previous curved glass curtain wall installation block is installed, measure the coordinates of the actual connection points based on the construction three-dimensional coordinate system. ; S34: Calculate the coordinates of the actual connection points Coordinates of the corresponding equivalent connection point coordinate difference value ; S35: Based on all equivalent connection points on the next curved glass curtain wall mounting block to be installed, calculate the equivalent connection point for each of the following: i Distance between actual connection points ; For the next curved glass curtain wall mounting block to be installed i The coordinates of the equivalent connection points are used to obtain the distance data set. ; S36: Filter out distance data groups minimum value Corresponding equivalent connection point coordinates Based on coordinate difference values For equivalent connection point coordinates After making corrections, the corrected equivalent connection point coordinates on the next curved glass curtain wall mounting block to be installed are obtained. ; ； S37: Determine the corrected equivalent connection point coordinates Is it within the area enclosed by the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed? If so, the next curved glass curtain wall mounting block to be installed will use the equivalent connection point coordinates. If the reference connection point is selected, proceed to step S38; otherwise, proceed to step S310. S38: Based on the coordinates of the reference connection point The corresponding installation coordinates below Establish the equation of the line connecting the two lines; ； S39: Draw the straight line connecting the two in the three-dimensional coordinate system and extend it to intersect the installation reference unit. The point of intersection is used as the first connection point when installing the next curved glass curtain wall installation block. During the installation of the next curved glass curtain wall installation block, first connect it to the installation bracket below through the first connection point to achieve positioning, and then connect the other connection points to the installation bracket. S310: Move the mounting bracket to the position on the curtain wall mounting plane and connect the original connection point on the next curved glass curtain wall mounting block to be installed to the mounting bracket.

2. The BIM-based installation and positioning method for ellipsoidal curved glass curtain walls according to claim 1, characterized in that, Step S1 includes: S11: Construct a curtain wall installation plane model in BIM software based on the design parameters of the curtain wall installation plane, and construct a curved glass curtain wall model on the curtain wall installation plane model based on the design parameters of the curved glass curtain wall; S12: Divide the curved glass curtain wall model evenly into... n Each correction unit is used to evenly divide the curtain wall installation plan model into several units. n Each positioning unit is used to construct a three-dimensional spatial coordinate system, and the coordinates of the center of each correction unit and the center of the positioning unit in the three-dimensional spatial coordinate system are obtained. , This ensures that the spatial three-dimensional coordinate system coincides with the on-site construction three-dimensional coordinate system of the curved glass curtain wall; S13: Calculate the distance between the center of the correction unit and the center of the corresponding positioning unit below, correct the relative position between the curved glass curtain wall model and the curtain wall installation plane model, and thus realize the correction of the overall installation position of the curved glass curtain wall model. The correction process satisfies the constraint conditions. ； in, For the set of center coordinates of the correction element, N To correct the number of units, The straight-line distance between the centers of two adjacent positioning units, determined from the design dimensions; S14: Complete the correction of the overall installation position of the curved glass curtain wall model.

3. The BIM-based installation and positioning method for ellipsoidal curved glass curtain walls according to claim 2, characterized in that, Step S2 includes: S21: Based on the design dimensions of each curved glass curtain wall mounting block, the curved glass curtain wall model is divided into several installation reference units; the stability coefficient of the corresponding curved glass curtain wall mounting block is calculated based on the dimensional parameters of each installation reference unit. f ; ； in, Stress coefficient, For wind vibration coefficient, The shape coefficient for the curved surface wind load of the mounting blocks for the curved glass curtain wall. This refers to the wind pressure height variation coefficient corresponding to the installation height of the curved glass curtain wall mounting block. Based on the basic wind pressure, b The shorter side length of the mounting block for the curved glass curtain wall. t The thickness of the mounting blocks for curved glass curtain walls. The maximum stress that the mounting blocks for curved glass curtain walls can withstand. This is the earthquake influence coefficient. M The self-weight of the mounting blocks for the curved glass curtain wall. This is the gravity equivalent coefficient. These are the weighting coefficients for the impact of wind and earthquake forces on the stability of curved glass curtain wall mounting blocks. Seismic stress on mounting blocks for curved glass curtain walls; S22: Set the stability coefficient threshold for curved glass curtain wall mounting blocks. ; like If the structural stability of the curved glass curtain wall mounting block meets the requirements, the mounting brackets at the four top corners of the curved glass curtain wall mounting block have met the stability requirements. like If the structural stability of the curved glass curtain wall mounting block is not met, it is determined that an additional mounting bracket needs to be added at the center point of the curved glass curtain wall mounting block to increase the structural stability of the curved glass curtain wall mounting block after installation.

4. The BIM-based installation and positioning method for ellipsoidal curved glass curtain walls according to claim 3, characterized in that, The determination of equivalent connection point coordinates The method for determining whether it is within the area enclosed by the installation reference unit is as follows: S371: Obtain the uniformity on the boundary of the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed. m Coordinates of points ,Will m Each point is projected onto the xoy plane, to m Coordinates of each projection point ; S372: Will m The maximum and minimum coordinates of each projection point are used as regional constraints. ； S373: Equivalent connection point coordinates It is also projected onto the xoy plane to obtain the equivalent connection point projection coordinates. ; If satisfied Then determine the coordinates of the equivalent connection points. Within the area enclosed by the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed, otherwise, determine the equivalent connection point coordinates. It is not within the area enclosed by the installation reference unit corresponding to the next curved glass curtain wall mounting block to be installed.

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