Error sharing positioning method for glass curtain wall keel installation

Abstract

The present application relates to a kind of glass curtain wall keel installation error apportioning positioning method, belong to building construction technical field, the present application will curtain wall be divided into N construction sections along height, each section height is equal to one floor height, at least two positioning axes are set on main structure, erect total station instrument to establish three-dimensional construction control network, the actual three-dimensional coordinate deviation of each embedded part in each construction section is measured and decomposed into normal, horizontal, vertical original deviation, the sum of the absolute value of each direction original deviation of all embedded parts in each positioning axis is calculated, if any direction exceeds corresponding preset total deviation threshold, then report design unit, otherwise, the average value of the deviation of the first construction section column is used to position the column, and the remaining deviation of horizontal and vertical is used for beam positioning, and the top cumulative offset is measured for the next construction section. The method is used for the advance judgment and segmented early warning of embedded part deviation in glass curtain wall keel installation, to avoid rework.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and specifically relates to an error-sharing and positioning method for glass curtain wall keel installation. Background Technology

[0002] In glass curtain wall construction, the accuracy of the keel installation directly affects the structural safety and appearance quality of the curtain wall, and the foundation of installation accuracy lies in the embedded parts in the main structure. Embedded parts are easily affected by vibration and formwork displacement during concrete pouring, and deviations between their actual and designed positions are common, often exceeding the allowable range specified in the standards. Given these deviations, the subsequent installation of columns and beams typically relies on three-dimensional adjustable connectors for position compensation. However, existing construction methods have two shortcomings. First, there is a lack of a mechanism to pre-judge the total deviation of embedded parts. Construction workers often only discover that the accumulated error exceeds the adjustable range after the keel installation has progressed to a certain stage. By this time, many components have already been installed, requiring rework or the customization of non-standard components, resulting in construction delays and material waste. Secondly, existing error control methods are relatively simplistic. Different levels of components, such as columns, beams, and panel connectors, often share the same set of adjustment methods and the same adjustment parameters. This leads to either insufficient adjustment at a certain level causing installation failure, or the selection of excessively expensive components to meet adjustment requirements, making it difficult to strike a balance between construction efficiency and component economy. Due to these problems, the difficulty in installing the keel caused by embedded part deviations has long been a technical challenge in curtain wall construction. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages that will be described later.

[0004] Another objective of this invention is to provide an error-sharing and positioning method for glass curtain wall keel installation. This method can make a total judgment on the deviation of embedded parts before construction and provide segmented early warning during construction. The total deviation is distributed and absorbed proportionally in the three installation levels of columns, beams, and connectors, so that the adjustment amount of each level is controlled within a reasonable range, avoiding rework due to excessive cumulative error.

[0005] To achieve these objectives and other advantages of the present invention, an error-sharing and positioning method for glass curtain wall keel installation is provided, comprising the following steps: Step 1: Divide the curtain wall into N consecutive construction segments along its height, with each segment having a height equal to one floor height, where N is an integer greater than or equal to 2. Establish at least two positioning axes along the length of the main structure, each corresponding to a vertically continuous column. Set at least two positioning points on each axis and establish a unified three-dimensional construction control network using a total station. Measure the deviation between the actual and designed three-dimensional coordinates of the embedded parts in each curtain wall section within each construction segment. Calculate the deviation as "actual three-dimensional coordinates - designed three-dimensional coordinates," with positive deviations corresponding to the outward direction, the horizontal rightward direction, and the vertical upward direction. Decompose this deviation into three components: the curtain wall surface normal direction, the horizontal direction along the curtain wall surface, and the vertical direction, denoted as the original normal deviation d. i f Horizontal original deviation d i h and vertical original deviation d i v Where i represents the i-th grid along the height direction covered by the column corresponding to the positioning axis; calculate the sum of the absolute values ​​of the original normal deviations of all embedded parts within each positioning axis, S. f = Σ|d i f | The sum of the absolute values ​​of the original horizontal deviations, S h = Σ|d i h |and the sum of the absolute values ​​of the original vertical deviations, S v = Σ|d i v |, if S f S h S v If any value exceeds the corresponding preset total deviation threshold T f T h T v Then report to the design unit to adjust the curtain wall panel dimensions or redesign the connectors and remeasure; if S f ≤ T f S h ≤ T h And S v ≤ T v Then proceed to step two, adjust the positioning columns with the arithmetic mean of the deviation of the columns in the first construction section, use the remaining horizontal and vertical deviations for the positioning of the crossbeams, and measure the cumulative offset at the top for use in the next construction section; for the 2nd to Nth construction sections, after correcting the deviation of the embedded parts in this section with the cumulative offset at the top of the previous construction section, follow the same logic as the average absorption deviation of the columns and the distribution of the remaining deviation of the crossbeams, and complete the positioning and installation of the columns and crossbeams in each section in sequence, and determine the segment deviation threshold according to the proportion of the number of segments in this section to the total number of segments for judgment.

[0006] During the installation of glass curtain wall keel, deviations in the position of embedded parts are unavoidable. If the total deviation is not effectively assessed before construction, the accumulated error often exceeds the adjustment capacity of the connectors after a certain stage of keel installation, resulting in rework. This invention first sums the original deviations of all embedded parts in each direction and compares them with a preset total deviation threshold. Only when the total deviation does not exceed the limit is subsequent installation carried out, thus avoiding the risk of construction failure due to excessive errors in the design or pre-embedded stage. For situations where the total deviation is controllable, the curtain wall is divided into continuous construction sections along the height direction. The first construction section uses the arithmetic mean of the deviations of all embedded parts in this section to position the columns, so that the overall offset of the columns absorbs the main deviations in this section. The remaining horizontal and vertical deviations are used to adjust the plane positioning line and installation elevation line of the horizontal beams in this section, respectively. Using the measured cumulative offset at the top of the previous construction section as a benchmark, the original deviation of the embedded parts is corrected to obtain the effective deviation. Then, the offset of the columns and the remaining deviation of the beams in this section are calculated according to the same principle. At the same time, the total deviation threshold is converted into a segmented deviation threshold according to the proportion of the number of segments in this section to the total number of segments, and it is used to determine whether the effective deviation of this section exceeds the limit. Through the above-mentioned layered allocation and segmented early warning method, the offset of the three installation levels of columns, beams and connectors decreases from top to bottom. The adjustment amount of each level is limited to a preset reasonable range, thereby avoiding rework or increased component costs caused by excessive adjustment amount of a single level, and significantly improving the reliability and construction efficiency of curtain wall keel installation.

[0007] Preferably, step two specifically involves: for the first construction section, calculating the arithmetic mean μ of the original normal deviations of all grids covered by the same column within that construction section. f1 = (Σd i f ) / m1, the arithmetic mean of the original horizontal deviations μ h1 = (Σd i h The arithmetic mean μ of the initial vertical deviation and the vertical deviation. v1 = (Σd i v ) / m1, where m1 is the total number of grids covered by the column in the first construction section, representing the normal offset, horizontal offset, and vertical offset of the column in that construction section; the column and the embedded parts are connected by a three-dimensional adjustable adapter; according to μ f1 μ h1 μ v1 Adjust the three-dimensional adjustable adapter connector to position the column, and check that the column's verticality deviation does not exceed one-thousandth of the column height within the construction section and has a maximum deviation of five millimeters; for each segment within the construction section, calculate the residual horizontal deviation r of that segment. ih = d i h - μ h1 Vertical residual deviation r i v = d i v - μ v1 According to r i v Adjust the installation elevation line of the crossbeam according to r i h Adjust the planar positioning lines of the crossbeam; the normal position of the crossbeam is determined by the positioned columns. After installation, select at least one verification point on the outer side of the top column of the construction section and measure the difference between its actual three-dimensional coordinates and design coordinates in three directions. This difference will be used as the cumulative offset C1 at the top of the construction section. f C1 h C1 v .

[0008] During the construction of the first construction section, due to the lack of cumulative offset from the previous section as a reference, it is necessary to establish an initial positioning benchmark for this section. This invention first calculates the arithmetic mean of the original normal, horizontal, and vertical deviations of all segments covered by the same column within this construction section, using this as the overall offset of the column. The column position is adjusted according to this offset using a three-dimensional adjustable adapter, allowing the column to absorb the main deviations within this construction section at once, avoiding the transmission of large deviations to the crossbeam. For each segment within this construction section, the corresponding overall offset of the column is subtracted from the original horizontal and vertical deviations of each segment, yielding independent residual horizontal and vertical deviations. These residual deviations are then used to adjust the planar positioning line and installation elevation line of the crossbeam, while the normal position of the crossbeam is directly determined by the already positioned column. After the columns and crossbeams are installed, the difference between the actual coordinates and the design coordinates is measured on the outside of the top column of this construction section, serving as the cumulative offset for use in the next construction section. Through the above processing, the columns of the first construction section can be positioned in one go using the average deviation within this section, so that they account for the vast majority of the deviation, while the crossbeams only need to be adjusted for the remaining deviation within a small range, thereby reducing the difficulty of adjusting the crossbeam installation; at the same time, the measured cumulative offset at the top carries all the information of the residual deviation after the construction of this section, providing an accurate starting benchmark for the error transmission and correction of subsequent construction sections.

[0009] Preferably, the method also includes step three: for the k-th construction segment, where k is an integer from 2 to N, first obtain the cumulative offset C(k-1) of the top of the previous construction segment. f C(k-1) h C(k-1) vThen, for each embedded part within the construction section, the effective normal deviation e is calculated. i f = d i f - C(k-1) f Horizontal effective deviation e i h = d i h - C(k-1) h Vertical effective deviation e i v = d i v - C(k-1) v Calculate the sum of the absolute values ​​of the effective normal deviations of all embedded parts within the construction section, E. f = Σ|e i f | The sum of the absolute values ​​of the effective horizontal deviations E h = Σ|e i h |and the sum of the absolute values ​​of the effective vertical deviations, E v = Σ|e i v | and calculate the segment deviation threshold in each direction of the construction section according to the following formula: t f = T f × (mk / M), t h = T h × (mk / M), t v = T v × (mk / M), where mk is the total number of grids covered by the column in the k-th construction section, and M is the total number of grids for the positioning axis; if E f E h E v Any value in the range exceeds the corresponding t f t h t v Then report to the design unit to adjust the curtain wall panel dimensions; if E f ≤ t f E h ≤ t h And E v ≤ t v Then calculate the arithmetic mean ν of the effective normal deviations of all the grids covered by the same column within the construction section. fk = (Σe i f ) / mk, the arithmetic mean of the horizontal effective deviation ν hk = (Σe i h) / mk, the arithmetic mean of the effective vertical deviation ν vk = (Σe i v ) / mk, as the normal offset, horizontal offset, and vertical offset of the column in this construction section; the actual coordinates of the top of the previous construction section are used as the positioning reference for the bottom of the column in this construction section, so that the normal, horizontal, and vertical positions of the column in this construction section all start from this positioning reference, according to ν fk ν hk ν vk Position and install the columns for this construction section, checking that their verticality deviation does not exceed one-thousandth of the column height within the section and has a maximum deviation of five millimeters. After installation, calculate the remaining horizontal deviation s for each section. i h = e i h - ν hk Vertical residual deviation s i v =e i v - ν vk According to s i h Adjust the horizontal beam plane positioning line according to s i v Adjust the installation elevation line of the crossbeam; the normal position of the crossbeam is determined by the actual position of the column in this construction section. Then, measure the difference between the actual coordinates and the design coordinates of the verification point on the outer side of the top column of this construction section, and use this as the cumulative offset Ck at the top of the construction section. f 、Ck h 、Ck v , for use in the next construction section.

[0010] Preferably, the method further includes: Step four, after the columns and beams of all N construction sections are installed, measuring the actual coordinates of the columns and beams in each grid, calculating the difference between them and the design coordinates in each direction, and adding the difference to the corresponding direction of the design coordinates of the glass panel hole position as the installation positioning coordinates of each connector; the connector is connected to the column or beam through a three-dimensional adjustment device, and the adjustment amount of the three-dimensional adjustment device in each direction is not less than the sum of the absolute value of the maximum original deviation of the embedded part in the corresponding construction section and the absolute value of the cumulative offset at the top of the construction section in that direction; during installation, the theoretical center distance between two adjacent connectors in the design drawings is used as a reference, and the plane position and elevation of each connector are adjusted by the three-dimensional adjustment device so that the center distance deviation and center height difference between two adjacent connectors are controlled between -1 mm and +1 mm.

[0011] Preferably, the process also includes step five, whereby the connecting claw is installed on the connecting seat. The connecting claw has a supporting surface for supporting the glass panel, and the height of the supporting surface is independently adjusted by the shims between the connecting claw and the connecting seat. When installing the connecting claw, the supporting surfaces of the four connecting claws in the same compartment are used as a reference, and the shims are adjusted so that the flatness deviation between the four supporting surfaces is less than 0.5 mm.

[0012] In the construction of subsequent sections, each section faces the challenge of determining the column offset and the remaining deviation of the beam given the known cumulative offset at its top. This invention first obtains the cumulative offset at the top of the previous section and subtracts this value from the original deviation of each embedded part in the current section to obtain the effective deviation for each segment. The effective deviation reflects the distribution of residual errors of the embedded parts in this section relative to the actual construction of the previous section. Then, the sum of the absolute values ​​of the effective deviations in each direction is calculated, and the total deviation threshold is converted into a segmental deviation threshold for this section based on the proportion of the number of segments in this section to the total number of segments. If the sum of the absolute values ​​of the effective deviations exceeds the segmental deviation threshold, it indicates that the deviation of the embedded parts in this section is still too large after correction and needs to be reported to the design unit for adjustment; if it does not exceed the threshold, the arithmetic mean of the effective deviations in this section is used as the overall offset of the column in this section, and the actual coordinates of the top of the previous section are used as the positioning reference for the bottom of the column in this section, so that the column position extends continuously from this reference according to the offset of this section. After the columns are installed, the effective deviation of each segment is subtracted from the column offset of that segment to obtain the remaining deviation of each segment. The planar positioning line and installation elevation line of the crossbeam are adjusted accordingly. Simultaneously, the cumulative offset at the top of this segment is measured and transferred to the next construction segment. Through this segmented, recursive, and proportionally early warning method, each construction segment independently absorbs the main deviations within its segment, while the crossbeam only handles the adjustment of remaining minor deviations, thus avoiding the cumulative deviation exceeding limits across segments. After all construction segments are completed, the difference between the actual coordinates and design coordinates of each segment is measured on the installed columns and crossbeams. This difference is then superimposed onto the design coordinates of the glass panel hole positions to serve as the installation positioning coordinates for the connectors, enabling the connectors to compensate for the final level of deviation remaining after the keel installation. The connectors are independently positioned using a three-dimensional adjustment device with sufficient adjustment margin to ensure that the center distance and height difference between adjacent connectors are controlled within ±1 mm. Subsequently, the connecting claws are installed on the connecting base, and the height of the supporting surface is independently adjusted by the shims, so that the flatness deviation of the supporting surface of the four connecting claws in the same section is less than 0.5 mm. From the average absorption of large-scale deviations from the columns, to the elimination of local residual deviations in the beams, to the fine compensation of the connecting base, and the micron-level coplanar adjustment of the connecting claws, a four-level error sharing system with progressively decreasing error distribution is formed, ensuring the final installation accuracy and appearance quality of the curtain wall keel and glass panels.

[0013] Preferably, in step three, the sum of the absolute values ​​of the effective normal deviations of all embedded parts within the k-th construction segment is calculated as E.f The sum of the absolute values ​​of the effective horizontal deviations E h The sum of the absolute values ​​of the effective vertical deviations, E v Then, the segment deviation threshold t is executed. f t h t v Before the comparison, the following correction steps are performed: Obtain the cumulative normal offset C(k-1) at the top of the previous construction segment. f Horizontal cumulative offset C(k-1) h Vertical cumulative offset C(k-1) v And obtain the upper limit value U of the preset single-segment deviation threshold corresponding to each direction of the previous construction segment. f U h U v U f U h U v The value range is the total deviation threshold T in the corresponding direction. f T h T v Five percent to fifteen percent; calculate the cumulative offset saturation λ in each direction. f = |C(k-1) f | / U f , λ h = |C(k-1) h | / U h , λ v = |C(k-1) v | / U v Determine the directions separately: if λ f If the normal segment deviation threshold is greater than 0.8, then the normal segment deviation threshold is corrected to t. f ' = t f × (1 + α × (λ f - 0.8) / 0.2); if λ h If the value is greater than 0.8, then the horizontal segment deviation threshold is corrected to t. h ' = t h × (1 + α × (λ h - 0.8) / 0.2); if λ v If the vertical segment deviation threshold is greater than 0.8, then the vertical segment deviation threshold is corrected to t. v '= t v × (1 + α × (λ v - 0.8) / 0.2); where α is the correction coefficient, ranging from 0.3 to 0.7; then the corrected piecewise deviation threshold is used to replace the original t. f t h t v , with Ef E h E v Compare; if E in any direction f E h E v If the deviation exceeds the corrected threshold for the corresponding segment, the design unit should be notified to adjust the curtain wall panel dimensions; if E in all directions f E h E v If none of the values ​​exceed the corrected corresponding segment deviation threshold, then the calculation of the arithmetic mean of the effective deviation of the column normal within that construction segment will continue.

[0014] When the cumulative offset at the top of the previous construction segment approaches or reaches the upper limit of the single-segment deviation threshold in that direction, the value subtracted from the original deviation of the embedded parts in this construction segment is large. This results in a systematically smaller absolute value of the effective deviation in this construction segment, making it easier for the sum of the absolute values ​​of the effective deviations to meet the segmented deviation threshold requirements. Consequently, this construction segment is incorrectly judged as qualified, masking the actual situation that the embedded parts have excessive deviations, leading to a decrease in early warning sensitivity. This invention, after calculating the sum of the absolute values ​​of the effective deviations in this construction segment and before comparing it with the segmented deviation threshold, first obtains the cumulative offset at the top of the previous construction segment and its corresponding preset upper limit of the single-segment deviation threshold. Then, it calculates the cumulative offset saturation in each direction, i.e., the ratio of the absolute value of the cumulative offset to the upper limit of the single-segment deviation threshold. When the saturation in any direction exceeds 0.8, the segmented deviation threshold in the corresponding direction of this construction segment is amplified and corrected according to a linear proportional formula. The correction coefficient is between 0.3 and 0.7, with higher saturation resulting in a larger amplification factor. Then, the corrected segmented deviation threshold replaces the original threshold and is compared with the sum of the absolute values ​​of the effective deviations. Through the above-mentioned saturation detection and threshold dynamic amplification mechanism, the compression effect of the cumulative offset saturation of the previous construction section on the sum of the absolute values ​​of the effective deviation is eliminated, and the true early warning sensitivity of the current construction section is restored. This ensures that even if the error of the previous construction section is large, the problem of excessive actual deviation of the embedded parts in the current construction section can still be accurately identified and reported in a timely manner, thus avoiding the hidden accumulation of errors.

[0015] Preferably, in step three, the cumulative offset Ck at the top of the k-th construction segment is measured. f 、Ck h 、Ck vThen, before performing calculations for the next construction section, the following correction steps are performed: At least three verification points are selected horizontally along the outer side of the column at the same height at the top of the construction section. At least one verification point is located on the outer side of the column on this positioning axis, and at least two verification points are located on the outer side of the column on adjacent positioning axes. The difference between the actual three-dimensional coordinates and the design coordinates of each verification point is measured in each direction. The measured offsets of at least three discrete points distributed along the length of the main structure at this height are obtained. The measured offset of the j-th verification point is denoted as Uj. f 、Uj h 、Uj v ; Calculate the arithmetic mean A of the measured offsets of at least three discrete points in the same direction. f A h A v The arithmetic mean of this value is then compared with the cumulative offset Ck measured at the top of the k-th construction segment. f 、Ck h 、Ck v Compare the values ​​in the same direction separately and calculate the deviation Δ in each direction. f = |A f - Ck f |、Δ h = |A h - Ck h |、Δ v = |A v - Ck v If the deviation in any direction exceeds the preset measurement error threshold ε f ε h ε v , where ε f ε h ε v The value range is the total deviation threshold T in the corresponding direction. f T h T v If the error is between 1% and 5%, the current measurement result is determined to contain abnormal measurement error, and the current Ck is discarded. f 、Ck h 、Ck v Instead, use the arithmetic mean A of the measured offsets of all verification points at that height. f A h A v The cumulative offset at the top of the k-th construction segment is used for the next construction segment; if the deviation values ​​in all directions do not exceed the corresponding measurement error threshold, the original Ck is retained. f 、Ck h 、Ck v For use in the next construction section.

[0016] When measuring the cumulative offset at the top of each construction section, relying solely on the measurement from a single check point is susceptible to interference from accidental factors such as total station alignment error, prism setup error, or control network transmission error. This can cause the measured cumulative offset to deviate from the actual deformation state of the structure, thereby distorting the effective deviation calculated for the next construction section based on this offset. This invention, after measuring the cumulative offset at the top of the k-th construction section, selects at least three check points horizontally along the outer side of the column at the same height, with at least two located on the outer side of columns adjacent to the positioning axis. The difference between the actual coordinates and design coordinates of these points is measured, obtaining the measured offsets of multiple discrete points distributed along the length of the main structure. The arithmetic mean of these measured offsets is then calculated. This average is compared with the initial cumulative offset measured at a single point to calculate the deviation in each direction. If the deviation exceeds the preset measurement error threshold (one percent to five percent of the total deviation threshold in the corresponding direction), it indicates that the single-point measurement result contains abnormal measurement errors. In this case, the single-point measurement value is discarded, and the arithmetic mean of the measured offsets from multiple points is used as the cumulative offset at the top of the construction segment and passed to the next construction segment. If the deviation does not exceed the threshold, the original measurement value is retained. Through the above multi-point verification and comparison mechanism, random errors in single-point measurements can be effectively identified and eliminated, making the cumulative offset transmitted between construction segments more realistically reflect the actual situation of structural deviations. This ensures the accuracy of subsequent effective deviation calculations and avoids misjudgments or incorrect corrections caused by measurement noise.

[0017] Preferably, in step two or three, for multiple curtain wall panels continuously arranged along the length of the main structure at the same elevation within the same construction section, the horizontal residual deviation r of each panel is calculated. i h or s i h Before adjusting the horizontal beam positioning line, perform the following smoothing steps: Obtain the horizontal residual deviation values ​​of all curtain wall sections at the same elevation within the construction section, and arrange them in sequence as R1, R2, ..., R L Where L is the total number of consecutive grids on the positioning axis at this elevation, and L is an integer greater than or equal to 2; from i=1 to i=L-1, the horizontal residual deviation R between two adjacent grids is determined sequentially. i and R {i+1} The product of R, if R i × R {i+1} If the value is less than 0, then a conflict with opposite signs is determined to exist at the adjacent positions; for each conflicting position, the conflict span value D = |R| is calculated. i | + |R {i+1}| and obtain the preset maximum adjustment step size S for a single segment in that direction. The value of S ranges from one-thousandth to five-thousandths of the horizontal spacing between adjacent embedded parts within the construction segment; if D ≤ S, then the horizontal residual deviation of the two adjacent segments is forcibly corrected to zero, that is, the beam is installed according to the design plane position; if D>S, then R is reduced proportionally. i and R {i+1} The absolute value of R, the reduced value i ' = R i × (S / D), R {i+1} ' = R {i+1} × (S / D), making the sum of the absolute values ​​of the two remaining deviations equal to S, while retaining the original sign; the corrected R i 'and R {i+1} 'Replace the original R' i and R {i+1} The beam plane positioning lines of the two adjacent grids are adjusted; for adjacent positions that do not conflict, the original remaining deviation value is retained; after the remaining deviations of all grids have been smoothed as described above, the beam plane positioning lines of each grid are adjusted according to the processed remaining deviation values.

[0018] Within the same construction section and at the same elevation, the horizontal residual deviations of adjacent curtain wall sections may have opposite signs; that is, one section requires the beam to shift to the right while another requires it to shift to the left. As a rigid component, the beam cannot simultaneously meet two opposite positioning requirements at both ends. In actual construction, only one end can be chosen as the reference, forcing the other end to undergo additional deformation or installation deviation. Before adjusting the beam's planar positioning line according to the horizontal residual deviation of each section, this invention first arranges the horizontal residual deviations of all sections at that elevation in sequence and sequentially checks the product of adjacent deviation values. If the product is less than zero, a conflict of opposite signs is identified, and the conflict span value is calculated as the sum of the absolute values ​​of the two deviations. A preset maximum adjustment step size for a single section is obtained, ranging from one-thousandth to five-thousandths of the horizontal spacing between adjacent embedded parts. If the conflict span value is less than or equal to this step size, it indicates that the beam's elastic deformation capacity is sufficient to absorb the conflict, and both deviations are forcibly corrected to zero. If the conflict span value is greater than the step size, the absolute values ​​of the two deviations are proportionally reduced so that the sum of the corrected absolute values ​​of the two deviations equals the step size while retaining the original sign. After this treatment, the remaining deviations of adjacent sections are in the same direction and the amplitude is within the adjustable range of the crossbeam. The crossbeam can simultaneously meet the positioning requirements at both ends according to the corrected deviation value, avoiding installation difficulties or forced relaxation of accuracy caused by rigid constraints, and ensuring the feasibility of crossbeam installation and positioning accuracy.

[0019] The present invention has at least the following beneficial effects: This invention sums the total deviations of all embedded parts before construction and compares them with a total deviation threshold. Subsequent procedures are only initiated when the total deviation is within a controllable range, thus avoiding rework due to excessive errors in the design or embedded stage. By dividing the curtain wall into continuous construction sections along its height, each section independently calculates the arithmetic mean of the embedded part deviations as the overall column offset. This allows the columns to absorb the main deviations within their section, while the beams only handle the remaining horizontal and vertical deviation adjustments. This achieves a reasonable distribution of errors between the column and beam levels, reducing the difficulty of beam adjustment and the cost requirements of connectors. The actual cumulative offset of the top of the previous section is used to correct the original deviation of the embedded parts in that section, and this is used to calculate the column offset for that section. This ensures that the column positions in each section extend continuously in the vertical direction. Simultaneously, the total deviation threshold is converted into segmented deviation thresholds according to the proportion of the number of sections for early warning, ensuring the continuity of deviation transmission and the quantitative controllability of the early warning indicators. After the keel is installed, the remaining last-level deviation is further compensated by the connectors and the center distance and height difference between adjacent connectors are controlled within one millimeter. Then, the flatness of the four supporting surfaces is made less than 0.5 millimeters by the connector claw shims. This forms a four-level progressive compensation system from the columns to the beams to the connectors and connector claws, which ultimately ensures the overall installation accuracy of the curtain wall keel and glass panels.

[0020] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Detailed Implementation

[0021] The present invention will now be described in further detail so that those skilled in the art can implement it based on the description.

[0022] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0023] This invention discloses an error-sharing and positioning method for glass curtain wall keel installation, comprising the following steps: Step 1, dividing the curtain wall into N continuous construction segments along its height, each segment having a height equal to one floor height, where N is an integer greater than or equal to 2; setting at least two positioning axes along the length of the main structure, each positioning axis corresponding to a column of vertically continuous columns; setting at least two positioning points on each positioning axis, and establishing a unified three-dimensional construction control network using a total station; measuring the deviation between the actual three-dimensional coordinates and the designed three-dimensional coordinates on the embedded parts of each curtain wall section within each construction segment, the deviation being calculated uniformly as "actual three-dimensional coordinates - designed three-dimensional coordinates", with positive deviations corresponding to the outward direction of the curtain wall, the horizontal rightward direction, and the vertical upward direction; decomposing the deviation into three components: the curtain wall surface normal direction, the horizontal direction along the curtain wall surface, and the vertical direction, denoted as the original normal deviation d. i f Horizontal original deviation d i h and vertical original deviation d i v Where i represents the i-th grid along the height direction covered by the column corresponding to the positioning axis; calculate the sum of the absolute values ​​of the original normal deviations of all embedded parts within each positioning axis, S. f = Σ|d i f | The sum of the absolute values ​​of the original horizontal deviations, S h = Σ|d i h |and the sum of the absolute values ​​of the original vertical deviations, S v = Σ|d i v |, if S f S h S v If any value exceeds the corresponding preset total deviation threshold T f T h T v Then report to the design unit to adjust the curtain wall panel dimensions or redesign the connectors and remeasure; if S f ≤ T f S h ≤ T h And S v ≤ T vThen proceed to step two, adjust the positioning columns with the arithmetic mean of the deviation of the columns in the first construction section, use the remaining horizontal and vertical deviations for the positioning of the crossbeams, and measure the cumulative offset at the top for use in the next construction section; for the 2nd to Nth construction sections, after correcting the deviation of the embedded parts in this section with the cumulative offset at the top of the previous construction section, follow the same logic as the average absorption deviation of the columns and the distribution of the remaining deviation of the crossbeams, and complete the positioning and installation of the columns and crossbeams in each section in sequence, and determine the segment deviation threshold according to the proportion of the number of segments in this section to the total number of segments for judgment.

[0024] Existing technologies lack a mechanism for pre-judging the total deviation of embedded parts, leading to easy rework due to accumulated errors exceeding limits during construction, and also lack multi-level error sharing methods. Compared with the aforementioned existing technologies, this invention first sums the original deviations of all embedded parts in each direction before curtain wall construction begins and compares them with a preset total deviation threshold. Subsequent installation is only initiated when the total deviation is within a controllable range, thereby avoiding the risk of rework in advance.

[0025] In step one of this invention, the curtain wall is divided into N consecutive construction segments along its height. The height of each construction segment is equal to the height of one floor, and N is equal to the total number of floors in the building (N≥2). Each construction segment strictly corresponds to one floor height; for example, a 10-story building is divided into 10 construction segments, and a 20-story building is divided into 20 construction segments. At least two positioning axes are set along the length of the main structure, with each positioning axis corresponding to a row of vertically continuous columns. The distance between the axes is generally taken as the design span of the columns. At least two positioning points are set on each positioning axis, and a total station is used to establish a unified three-dimensional construction control network. Commercially available equipment includes Leica TS60 or Sokkia FX series total stations, with a ranging accuracy of no more than 3mm + 2×10⁻. 6Multiplying by the distance measurement length, the angular measurement accuracy is no higher than 5 seconds. Combined with a level, the elevation points are transferred to the plane control points, forming a three-dimensional construction control network covering the entire construction surface. The aforementioned equipment is placed on stable ground outside the main structure. After leveling according to the total station's operating procedures, the station coordinates are set using the resection method, thus forming a three-dimensional control network covering the entire curtain wall construction surface. For each curtain wall section within each construction segment, the deviation between the actual and designed three-dimensional coordinates of the embedded parts is measured. The deviation is calculated as "actual three-dimensional coordinates - designed three-dimensional coordinates," with positive deviations corresponding to the outward direction, horizontal rightward direction, and vertical upward direction. This deviation is decomposed into three components: the curtain wall surface normal direction, the horizontal direction along the curtain wall surface, and the vertical direction, recorded as the original normal deviation, horizontal original deviation, and vertical original deviation, respectively. Q235B grade hot-dip galvanized C-channel steel embedded parts are preferred for fixing with three-dimensional adjustable adapters via T-bolts. When using flat embedded parts, an adapter steel plate must be welded to the surface of the embedded part, or other suitable connection methods must be used. Before construction, the embedded parts are pre-embedded in the concrete beams or columns of the main structure according to the design elevation and position. The installation deviation of the embedded parts is generally controlled within ±10 mm for elevation, ±20 mm for horizontal position, and ±15 mm for inward / outward deviation. Calculate the sum of the absolute values ​​of the original normal deviation, the sum of the absolute values ​​of the original horizontal deviation, and the sum of the absolute values ​​of the original vertical deviation for all embedded parts within each positioning axis. If any of the sums of the absolute values ​​of deviation in these three directions exceeds the corresponding preset total deviation threshold, report to the design unit to adjust the curtain wall panel dimensions or redesign the connectors and remeasure. The range of the total deviation threshold can be determined according to the engineering accuracy requirements. For example, the total deviation threshold for the normal direction is 25 mm to 35 mm, the total deviation threshold for the horizontal direction is the product of the total number of panels on the positioning axis multiplied by 2 mm, and the total deviation threshold for the vertical direction is the product of the total number of panels on the positioning axis multiplied by 1.5 mm. These values ​​can be preset according to the requirements of the "Technical Specification for Glass Curtain Wall Engineering" JGJ102 and in combination with the actual engineering situation. If the sum of the absolute values ​​of deviation in the three directions does not exceed the corresponding total deviation threshold, proceed to step two.

[0026] In step two, for the first construction section, the arithmetic mean of the original normal deviation, the arithmetic mean of the original horizontal deviation, and the arithmetic mean of the original vertical deviation of all grids covered by the same column within that construction section are calculated. These are used as the normal offset, horizontal offset, and vertical offset of the column in that construction section. The columns are typically made of 6063-T5 or 6063-T6 aluminum alloy profiles extruded using molds, or Q235B steel square tubing welded together. The wall thickness is determined based on stress calculations and is generally between 3 and 5 millimeters. The length of the column is equal to the height of one construction section, i.e., the height of one floor. Depending on site conditions, it can be purchased directly to the specified length or cut to the actual length. The column and the embedded part are connected by a three-dimensional adjustable adapter. These adapters are commercially available right-angle toothed adapters with horizontal and vertical oblong holes, made of precision-cast 304 stainless steel. The base is fixed to the C-channel steel on the embedded part using T-bolts, and the upper part is connected to the column using a bolt assembly with a stop washer. During installation, the base of the three-dimensional adjustable adapter is first fixed to the embedded part, located in the space between the surface of the embedded part and the back of the column. Its horizontal direction can be adjusted by ±8 mm within the oblong hole range, its vertical direction by ±6 mm within the oblong hole range, and its normal direction by ±10 mm via a threaded sleeve. The three-dimensional adjustable adapter is then adjusted according to the calculated normal, horizontal, and vertical offsets to position the column. After positioning, use a theodolite or total station to check the verticality of the columns. The verticality deviation should not exceed one-thousandth of the column length and should not exceed 5 mm. For example, when the column height is 3 meters, the verticality deviation should not exceed 3 mm. For each grid, calculate the original horizontal deviation of the grid and subtract the overall horizontal offset of the column to obtain the remaining horizontal deviation. Calculate the original vertical deviation and subtract the overall vertical offset of the column to obtain the remaining vertical deviation. Adjust the installation elevation line of the crossbeam according to the remaining vertical deviation, and adjust the plane positioning line of the crossbeam according to the remaining horizontal deviation. The normal position of the crossbeam is directly determined by the positioned columns. The crossbeam is installed between two adjacent columns, and its two ends are fixed to the connecting angle brackets on the side wall of the column using stainless steel bolt sets. The material of the crossbeam is generally the same aluminum alloy profile as the column. The connection holes at both ends of the crossbeam to the column are pre-drilled before construction. During installation, use a horizontal laser level to mark the required elevation at both ends of the crossbeam, and then determine the final positioning position of the crossbeam based on the remaining horizontal deviation. After installation, at least one verification point is selected on the outer side of the top column of the construction section. The difference between its actual three-dimensional coordinates and the design coordinates in three directions is measured using a total station. This difference is taken as the cumulative offset of the top of the construction section and will serve as the initial reference for the next construction section. At this point, the installation of the columns and beams for the first construction section is complete. Subsequent construction sections will proceed upwards sequentially according to this principle until the installation of all floor joists is completed.

[0027] In step two of this invention, for the first construction section, the arithmetic mean μ of the original normal deviation of all the grids covered by the same column within that construction section is calculated. f1 = (Σd i f ) / m1, the arithmetic mean of the original horizontal deviations μ h1 = (Σd i h The arithmetic mean μ of the initial vertical deviation and the vertical deviation. v1 = (Σd i v ) / m1, where m1 is the total number of grids covered by the column in the first construction section, representing the normal offset, horizontal offset, and vertical offset of the column in that construction section; the column and the embedded parts are connected by a three-dimensional adjustable adapter; according to μ f1 μ h1 μ v1 Adjust the three-dimensional adjustable adapter connector to position the column, and check that the column's verticality deviation does not exceed one-thousandth of the column height within the construction section and has a maximum deviation of five millimeters; for each segment within the construction section, calculate the residual horizontal deviation r of that segment. i h = d i h - μ h1 Vertical residual deviation r i v =d i v - μ v1 According to r i v Adjust the installation elevation line of the crossbeam according to r i h Adjust the planar positioning lines of the crossbeam; the normal position of the crossbeam is determined by the positioned columns. After installation, select at least one verification point on the outer side of the top column of the construction section and measure the difference between its actual three-dimensional coordinates and design coordinates in three directions. This difference will be used as the cumulative offset C1 at the top of the construction section. f C1 h C1 v .

[0028] During the construction of the first section, due to the lack of cumulative offset from the previous section as a reference, it is necessary to establish an initial positioning benchmark for this section. The overall offset of the column is calculated by taking the arithmetic mean of the original normal, horizontal, and vertical deviations of all sections covered by the same column within this section. This is because the arithmetic mean can concentrate the overall horizontal deviation of the embedded parts in each section onto the column, allowing the column to absorb the main deviations of this section at once, avoiding the large deviations being dispersed and transmitted to numerous beams. Subtracting the corresponding overall offset of the column from the original horizontal and vertical deviations of each section yields the independent remaining horizontal and vertical deviations. This is done so that the small residual deviations after the column absorbs the remaining deviations are left to the beams, allowing the beams to be adjusted only within a small range, reducing the difficulty of beam installation. The normal position of the beams is directly determined by the already positioned columns because the normal deviation of the columns has already been compensated for by the overall offset; therefore, the beams do not require further normal adjustment. After the columns and beams are installed, the difference between the actual coordinates and the design coordinates is measured on the outside of the top column of this construction section. This is used as the cumulative offset for the next construction section. This is because the cumulative offset contains all the information of the residual deviation after the construction of this section, including the overall offset that still exists after the columns and beams are installed. It provides an accurate starting benchmark for the error transmission and correction of subsequent construction sections, ensuring the positional continuity between the upper and lower construction sections.

[0029] A common curtain wall construction method, after completing the first construction segment, simply uses the coordinates of the top of the previous segment as the reference for the columns of the next segment in subsequent construction segments. It fails to quantitatively assess the effective deviation of embedded parts, nor does it set segmented threshold warnings. Furthermore, it lacks a multi-level error-sharing mechanism for columns, beams, connectors, and connector claws, resulting in accumulated errors often exceeding the adjustment range of the connectors. Compared to the aforementioned prior art, this invention first obtains the cumulative offset of the top of the previous construction segment in each subsequent construction segment, calculates the effective deviation of the embedded parts in this segment based on this, and then determines whether the deviation is controllable through a segmented ratio threshold. Installation continues only when the deviation is controllable, thereby achieving segmented warnings and step-by-step absorption of errors.

[0030] In step three of this invention, for the k-th construction segment (k ranges from 2 to N), the cumulative offset C(k-1) at the top of the previous construction segment is first obtained from the measurement record. f C(k-1) h C(k-1) v The cumulative offset is the difference between the actual coordinates and the design coordinates measured by a total station at the check point on the outer side of the top column of the previous construction section. The total station is still a Leica TS60 model, and its station position is set on the stable control point on the outer side of the main structure. Then, for each embedded part in the current construction section, its original normal deviation d is used. if Subtract C(k-1) f The effective normal deviation e is obtained i f Similarly, the effective horizontal deviation e is obtained. i h and vertical effective deviation e i v The material for the embedded parts remains Q235B hot-dip galvanized steel sheet, and they are embedded at the top of beams or the sides of columns on each floor. Calculate the sum of the absolute values ​​of the effective normal deviations of all embedded parts within this construction section, E. f The sum of the absolute values ​​of the effective horizontal deviations E h The sum of the absolute values ​​of the effective vertical deviations, E v Simultaneously, based on the number of grids (mk) covered by the columns within this construction section and the total number of grids (M) along the entire positioning axis, the segment deviation thresholds in each direction are calculated: Normal segment threshold t f Equal to the preset total normal deviation threshold T f Multiply by mk and divide by M. T f The value can be between 25 mm and 35 mm, for example, 30 mm; the total horizontal deviation threshold T h The vertical total deviation threshold T can be calculated by multiplying the total number of grid divisions on the positioning axis by 2 millimeters. v The product of the total number of grid squares and 1.5 millimeters can be taken. If E f E h E v Any value in the range exceeds the corresponding t f t h t v If the deviation in this construction section is deemed uncontrollable, the design unit should be notified to adjust the curtain wall panel dimensions or redesign the connectors; if neither is exceeded, construction should continue. Next, the arithmetic mean ν of the effective normal deviation of all panels covered by the same column within this construction section is calculated. fk That is, all e i f Similarly, by dividing the sum by mk, we obtain the arithmetic mean of the effective horizontal deviation ν. hk and the arithmetic mean of vertical effective deviations ν vk This serves as the reference for the normal, horizontal, and vertical offsets of the columns in this construction section. The actual coordinates of the top check point of the previous construction section are used as the positioning reference for the bottom of the columns in this construction section. The normal, horizontal, and vertical positions of the columns in this construction section all originate from this reference, and then are determined according to ν... fk ν hk ν vkPositioning is performed. The columns still use 6063-T5 aluminum alloy profiles or Q235B steel square tubes, with a length equal to one floor height. They are fixed to the embedded parts via a three-dimensional adjustable adapter connector. The base of this adapter is fixed to the C-channel steel of the embedded parts using T-bolts. The base is located between the surface of the embedded parts and the back of the column. The horizontal oblong hole allows for ±8 mm adjustment, the vertical oblong hole allows for ±6 mm adjustment, and the normal threaded sleeve allows for ±10 mm adjustment. After the columns are installed, their verticality is checked with a theodolite or total station. The deviation must not exceed one-thousandth of the column height in the construction section and must not exceed 5 mm. For example, when the floor height is 3.6 meters, the verticality deviation should be less than 3.6 mm. Then, for each section within this construction section, the residual horizontal deviation s is calculated. i h equals e i h Subtract ν hk Vertical residual deviation s i v equals e i v Subtract ν vk According to s i v Adjust the installation elevation line of the crossbeam according to s i h Adjust the horizontal positioning lines of the crossbeam. The crossbeam is installed between two adjacent columns, and its two ends are fixed to the connecting angle brackets on the side walls of the columns using stainless steel bolt sets. The crossbeam material is the same as the columns. During installation, a horizontal laser level is used to lay out the required elevation and horizontal position of both ends of the crossbeam. The normal position of the crossbeam is directly determined by the actual position of the columns in this construction section and does not require additional adjustment. Finally, select at least one verification point on the outer side of the top column of this construction section, and use a total station to measure the difference between its measured coordinates and the design coordinates, which will be used as the cumulative offset Ck at the top of this construction section. f 、Ck h 、Ck v This process is then passed on to the next construction segment. This is repeated until all N construction segments are completed.

[0031] After the columns and beams of all construction sections are installed, step four is performed. The actual coordinates of the columns and beams within each section are measured, and the differences between these coordinates and the design coordinates in each direction are calculated. These differences are then added to the corresponding directions of the glass panel hole design coordinates to obtain the installation positioning coordinates of each connector. The connectors are commercially available 304 stainless steel point-support type connectors, such as the series from the German company SGP or the domestic brand Yuhua, which have independent normal, horizontal, and vertical three-dimensional adjustment functions. The connectors are connected to the columns or beams via a three-dimensional adjustment device. The adjustment amount of this three-dimensional adjustment device in each direction should not be less than the absolute value of the maximum original deviation of the embedded part in the corresponding construction section and the absolute value of the cumulative offset of the top of the construction section where the embedded part is located (i.e., if the embedded part is located in the kth construction section, then Ck is taken). f 、Ck h 、Ck v The sum of the absolute values ​​of the deviations must satisfy the following condition: Adjustment amount ≥ Absolute value of maximum original deviation + Absolute value of cumulative offset at the top. In actual construction, if the required adjustment amount calculated according to this inequality does not exceed ±15 mm in the normal direction, ±12 mm in the horizontal direction, and ±10 mm in the vertical direction, then commercially available devices within this range can be selected; otherwise, devices with a larger adjustment amount should be selected to meet the requirements of this inequality. The assembly position of the connector is determined by drilling holes at the predetermined positions of the column or beam according to the calculated installation positioning coordinates, and then fixing the connector base with bolts. During installation, the theoretical center distance between two adjacent connectors in the design drawings is used as a reference. The plane position and elevation of each connector are adjusted by adjusting the screws of the three-dimensional adjustment device. Vernier calipers or special spacing measuring tools are used to control the center distance deviation and center height difference between two adjacent connectors to be between -1 mm and +1 mm.

[0032] Step five is performed after the connector base is installed. The connector claws are installed on the connector base. These are four-claw connectors made of 316 stainless steel, cast or forged. The ends of the four claw arms have support surfaces for supporting the glass panels. The connector claws are connected to the ball joint screw of the connector base via a central screw hole. The height of the support surface can be independently adjusted by adding or removing stainless steel shims between the connector claw and the connector base. Shims are available in various thicknesses, including 0.2 mm, 0.5 mm, and 1.0 mm, and are made of 304 stainless steel. During installation, using the support surfaces of the four connector claws within the same compartment as a reference, first determine a reference plane using three non-collinear support surfaces. Compare the fourth support surface to this reference plane and measure the gap using a feeler gauge. If the gap exceeds 0.5 mm, adjust the height of the fourth connector claw's support surface by adding or removing shims until the flatness deviation between the four support surfaces is less than 0.5 mm. Gaskets are placed on the flange face between the connector claw and the connector seat, and each connector claw can be adjusted independently. After coplanar adjustment is completed, the glass panel can be placed on the supporting surface and fixed with the cap. At this point, the installation of the entire curtain wall keel and connector system is complete, achieving four levels of error distribution from the columns to the beams to the connector seats and connector claws.

[0033] Common curtain wall construction methods, when calculating the sum of the absolute values ​​of effective deviations of subsequent construction sections and comparing them with the segmented deviation threshold, do not consider the compression effect of the cumulative offset saturation of the previous construction section on the early warning sensitivity of the current section. This leads to the possibility that even when the actual deviation of the embedded parts in the current section is too large, it may still be incorrectly judged as qualified, resulting in the accumulation of hidden errors. Compared with the above-mentioned prior art, the present invention adds a saturation detection and threshold amplification correction step after calculating the sum of the absolute values ​​of effective deviations of the current construction section, thereby restoring the true early warning sensitivity. In another embodiment of the present invention, in step three, when the sum of the absolute values ​​of the effective deviations of all embedded parts in the k-th construction section E f E h E v After the calculation is completed, the value is compared with the segmented deviation threshold t. f t h t v Before making the comparison, perform the following correction operation: Obtain the cumulative normal offset C(k-1) at the top of the previous construction segment, i.e., the (k-1)th construction segment. f Horizontal cumulative offset C(k-1) h Vertical cumulative offset C(k-1) v These values ​​were directly read from the measurement records at the completion of the previous construction section. Simultaneously, the upper limit value U of the preset single-segment deviation threshold for each direction corresponding to the previous construction section was obtained. f U h U v U f Uh U v The value range is the total deviation threshold T in the corresponding direction. f T h T v Five percent to fifteen percent. For example, if the total normal deviation threshold T f If we take 30 mm, then U f The tolerance can range from 1.5 mm to 4.5 mm, but 3 mm is typically used as the upper limit for the single-segment deviation threshold. The upper limit U for the horizontal single-segment deviation threshold. h The horizontal total deviation threshold can be taken as 5% to 15%. For example, if the horizontal total deviation threshold for a certain positioning axis, calculated by multiplying the total number of divisions by 2 mm, is 40 mm, then U h The value can range from 2 mm to 6 mm, but is typically 4 mm. Similarly, the upper limit of the vertical single-segment deviation threshold Uv is calculated. For example, if the total vertical deviation threshold, calculated by multiplying the total number of grids by 1.5 mm, is 30 mm, then Uv can range from 1.5 mm to 4.5 mm, but is typically 3 mm. Calculate the cumulative offset saturation in each direction: normal saturation λ. f It equals C(k-1). f The absolute value divided by U f Horizontal saturation λ h It equals C(k-1). h The absolute value divided by U h Vertical saturation λ v It equals C(k-1). v The absolute value divided by U v For example, if C(k-1) f It is 2.7 mm, U f If it is 3 millimeters, then λ f The value is 0.9. For any direction, if the saturation in that direction is greater than 0.8, the corresponding segmented deviation threshold for that direction is amplified and corrected. The correction formula is: Corrected normal segmented deviation threshold t f 'Equal to the original t f Multiply by 1 inside the parentheses plus α multiplied by λ f Subtract 0.8 from the product of 0.2 and 0.8, where α is a correction factor ranging from 0.3 to 0.7. Typically, α is taken as 0.5. For example, if t f It is 10 mm, λ f If t is 0.9, then t f 'This equals 10 multiplied by the number in parentheses (1) plus 0.5 multiplied by 0.1 divided by 0.2, which is 10 multiplied by 1 plus 0.25 equals 12.5 millimeters. Similarly, calculate t.' h 'and t v Then, the corrected segmented deviation threshold t is used. f '、t h '、t v 'Replace the original tf t h t v , with E f E h E v Compare. If E in any direction... f E h E v If the deviation exceeds the corrected threshold for the corresponding segment, the design unit should be notified to adjust the curtain wall panel dimensions; if E in all directions f E h E v If none of the deviations exceed the corrected corresponding segmental deviation threshold, then the calculation of the arithmetic mean of the effective deviation of the column normal within that construction segment continues, i.e., the calculation of ν is performed. fk ν hk ν vk In the above correction steps, the cumulative offset C(k-1) f C(k-1) h C(k-1) v The measurements were taken using a Leica TS60 total station at the check point on the outer side of the top column of the previous construction section. The station is located on the stability control point on the outer side of the main structure. Single-segment deviation threshold upper limit U f U h U v Before construction, the accuracy requirements and specifications are recorded in the construction plan. The correction coefficient α can be adjusted based on construction experience; a larger value, such as 0.6 or 0.7, can be used for projects with high accuracy requirements, while a smaller value, such as 0.3 or 0.4, can be used for general projects. Through the above-mentioned saturation detection and dynamic threshold amplification, even if the cumulative offset of the previous construction segment is close to or reaches saturation, the sum of the absolute values ​​of the effective deviations of the current construction segment will not be artificially suppressed too low, thus making the early warning judgment more realistic and reliable. This correction is only activated when the saturation exceeds 0.8; when the saturation is below 0.8, the original threshold is still used, avoiding over-correction.

[0034] A common curtain wall construction method typically selects only one verification point for single-point measurement when measuring the cumulative offset at the top of each construction segment. This approach is susceptible to interference from total station alignment errors, prism setup errors, or control network transmission errors, causing the measured cumulative offset to deviate from the actual structural deformation state. Consequently, the effective deviation calculated for the next construction segment based on this offset becomes distorted. Compared to the aforementioned prior art, this invention adds a multi-point verification and comparison correction step after measuring the cumulative offset at the top of the k-th construction segment, thereby effectively identifying and eliminating random errors in single-point measurements.

[0035] In another embodiment of the present invention, in step three, when the columns and beams of the k-th construction segment are installed and the cumulative offset Ck at the top of the construction segment is measured... f 、Ck h 、Ck v Before performing calculations for the next construction section, the following corrections are performed. At least three check points are selected horizontally along the outer side of the column at the same height at the top of the construction section. At least one check point is located on the outer side of the column of this positioning axis, and at least two check points are located on the outer side of the column of the adjacent positioning axis. Specifically, assuming the top of the construction section is located at the m-th floor elevation, three check points are selected along the length of the building at a height of 1.2 meters from the floor surface on the outer side of the column of this floor: the first check point is located on the outer side of the column of this positioning axis, the second check point is located on the outer side of the column of the adjacent positioning axis on the left, and the third check point is located on the outer side of the column of the adjacent positioning axis on the right. The positions of these check points are marked with red paint, and their design coordinates are indicated on the control network diagram. The difference between the actual three-dimensional coordinates and the design coordinates of each check point is measured in each direction to obtain the measured offset of at least three discrete points distributed along the length of the main structure at that height. The measured offset of the j-th check point is denoted as Uj. f 、Uj h 、Uj v The measuring equipment still uses a Leica TS60 total station. The station is set at a stable control point outside the main structure, and a small prism is directly attached to a marked point on the outside of the column. Then, the arithmetic mean A of the measured offsets of at least three discrete points is calculated in the same direction. f A h A v For example, the average normal value A is obtained by adding the measured normal offsets of three points and dividing by 3. f Similarly, the horizontal average value A is obtained. h and vertical average value A v Calculate the deviation values ​​in each direction: normal deviation Δ f Equals A f Subtract Ck f The absolute value, the horizontal deviation Δ h Equals A h Subtract Ck h The absolute value, vertical deviation Δ v Equals A v Subtract Ck v The absolute value of ε. Preset measurement error threshold ε. f ε h ε v Its value range is the total deviation threshold T in the corresponding direction. f T h Tv One percent to five percent. For example, if the total normal deviation threshold T f If we take 30 mm, then ε f A range of 0.3 mm to 1.5 mm can be taken; if the total horizontal deviation threshold T h Take a certain value, ε h Take the corresponding proportion; the same applies to the vertical direction. If the deviation in any direction exceeds the corresponding measurement error threshold, it is determined that the current single-point measurement result contains abnormal measurement error, and the current Ck is discarded. f 、Ck h 、Ck v Instead, use the arithmetic mean A of the measured offsets of all verification points at that height. f A h A v The cumulative offset at the top of the k-th construction segment is used for the next construction segment. If the deviation values ​​in all directions do not exceed the corresponding measurement error threshold, the original Ck is retained. f 、Ck h 、Ck v Used for the next construction section. In the above operation, the selection of verification points should avoid areas with obvious local unevenness or dirt on the column surface. During measurement, ensure the prism is accurately aligned with the center of the marked point, and repeat the measurement twice at each point, taking the average value to further reduce random errors. Through this multi-point verification and comparison, the reliability of cumulative offset transmission can be significantly improved, providing an accurate benchmark for calculating the effective deviation of subsequent construction sections.

[0036] In existing curtain wall construction methods, adjusting the horizontal beam positioning lines typically involves directly using the independent horizontal residual deviation of each section for positioning, without considering the rigidity conflict caused by differences in the horizontal residual deviations of adjacent sections. When the horizontal residual deviations of two adjacent sections have opposite signs, both ends of the beam are required to shift in opposite directions. Since the beam, as a rigid component, cannot simultaneously meet these requirements, only one end can be used as the reference during construction, forcing the other end to undergo additional deformation or installation deviation, affecting installation quality and structural safety. Compared to the aforementioned existing technologies, this invention adds a smoothing process before adjusting the horizontal beam positioning lines. By detecting and correcting conflicts of opposite signs, it ensures that the positioning requirements at both ends of the beam are consistent.

[0037] In another embodiment of the present invention, in step two or three, for multiple curtain wall panels continuously arranged along the length of the main structure at the same elevation within the same construction section, before adjusting the horizontal beam plane positioning line according to the horizontal residual deviation of each panel, the following smoothing operation is performed first. First, the horizontal residual deviation values ​​of all curtain wall panels at the same elevation within the construction section are obtained and arranged in sequence R1, R2, ..., R according to the panel order. LL represents the total number of consecutive grid cells on the positioning axis at this elevation. L is an integer greater than or equal to 2, and its specific value depends on the floor length and grid cell width. For example, when the floor length is 30 meters and each grid cell width is 1.5 meters, L equals 20. These horizontal residual deviation values ​​are derived from r in step two. i h Or s in step three i h These values ​​are read directly; they have already been calculated after deducting the overall offset of the columns, preserving the independent adjustment requirements of each grid in the horizontal direction. Then, from i equal to 1 to i equal to L minus 1, the remaining horizontal deviation R between adjacent grids is determined sequentially. i and R {i+1} The product of R and R. If the product is less than 0, it is determined that there is a conflict of opposite signs at the adjacent positions, that is, one segment requires the beam to be shifted to the right while the other segment requires the beam to be shifted to the left. For each conflicting position, the conflict span value D is calculated, where D equals R. i The absolute value plus R {i+1} The absolute value of S is obtained. Simultaneously, the preset maximum adjustment step size S for a single segment in that direction is acquired. The value of S ranges from one-thousandth to five-thousandths of the horizontal spacing between adjacent embedded parts within the construction segment. The horizontal spacing between adjacent embedded parts is the width of the curtain wall segment, typically 1.2 meters to 2.0 meters. For example, if the segment width is 1.5 meters, S can range from 1.5 millimeters to 7.5 millimeters, generally 3 millimeters. The value of S is preset before construction based on the adjustment capacity of the connectors and the allowable elastic deformation capacity of the beam, and is written into the construction plan. If the conflict span value D is less than or equal to S, it indicates that the elastic deformation capacity of the beam is sufficient to absorb the conflict. In this case, the horizontal residual deviation of the two adjacent segments is forcibly corrected to zero, i.e., R is set to zero. i 'Equals 0, R {i+1} 'Equals 0. If the conflict span value D is greater than S, then R is reduced proportionally.' i and R {i+1} The absolute value of R, the reduced value i ' = R i × (S / D), R {i+1} ' = R {i+1} × (S / D) makes the sum of the absolute values ​​of the two remaining deviations equal to S after reduction, while retaining the original sign. For example, if R i +5 mm, R {i+1} If the value is -4 mm, then D is 9 mm; if S is 3 mm, then R... i = 5 × (3 / 9) ≈ 1.67 mm, R {i+1} = -4 × (3 / 9) ≈ -1.33 mm, the sum of the corrected absolute values ​​is approximately 3 mm, consistent with S. The corrected R... i 'and R {i+1}'Replace the original R' i and R {i+1} The horizontal beam positioning lines for the adjacent two grids are adjusted. For adjacent positions that do not conflict (i.e., positions where the product is greater than or equal to 0), the original residual deviation value is retained. After the residual deviations of all grids have been smoothed as described above, the horizontal beam positioning lines for each grid are adjusted according to the processed residual deviation values. During adjustment, a horizontal laser level is used to mark the deviation positions at both ends of the horizontal beam. The horizontal beam material is 6063-T5 aluminum alloy profile, fixed to the column sidewalls using stainless steel bolt sets. The length of the horizontal beam is equal to the center distance between adjacent columns, generally between 1.2 meters and 2.0 meters. Through the above smoothing process, even if there are conflicting horizontal residual deviations between adjacent grids, the positioning requirements at both ends of the horizontal beam can be aligned by zeroing or proportional reduction, and the amplitude is controlled within the adjustable range of the horizontal beam. This processing step does not require additional equipment; only numerical correction needs to be completed in the construction software or calculation table, and then the corrected values ​​are used as the basis for horizontal beam layout. The correction factor S / D can be calculated on-site by technicians using a regular calculator or computer. The corrected value is recorded in the construction log for use by the layout workers. This method avoids installation difficulties or forced relaxation of precision caused by rigid constraints, ensuring the feasibility and positioning accuracy of the beam installation.

[0038] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details.

Claims

1. A method for error-sharing and positioning during the installation of glass curtain wall keel, characterized in that, Includes the following steps: Step 1: Divide the curtain wall into N consecutive construction segments along its height, with each segment having a height equal to one floor height, where N is an integer greater than or equal to 2. Establish at least two positioning axes along the length of the main structure, each corresponding to a vertically continuous column. Set at least two positioning points on each axis and establish a unified three-dimensional construction control network using a total station. Measure the deviation between the actual and designed three-dimensional coordinates of the embedded parts in each curtain wall section within each construction segment. Calculate the deviation as "actual three-dimensional coordinates - designed three-dimensional coordinates," with positive deviations corresponding to the outward direction, the horizontal rightward direction, and the vertical upward direction. Decompose this deviation into three components: the curtain wall surface normal direction, the horizontal direction along the curtain wall surface, and the vertical direction, denoted as the original normal deviation d. i f Horizontal original deviation d i h and vertical original deviation d i v Where i represents the i-th grid along the height direction covered by the column corresponding to the positioning axis; calculate the sum of the absolute values ​​of the original normal deviations of all embedded parts within each positioning axis, S. f = Σ|d i f | The sum of the absolute values ​​of the original horizontal deviations, S h = Σ|d i h |and the sum of the absolute values ​​of the original vertical deviations, S v = Σ|d i v |, if S f S h S v If any value exceeds the corresponding preset total deviation threshold T f T h T v Then report to the design unit to adjust the curtain wall panel dimensions or redesign the connectors and remeasure; if S f ≤ T f S h ≤ T h And S v ≤ T v Then proceed to step two, adjust the positioning columns with the arithmetic mean of the deviation of the columns in the first construction section, use the remaining horizontal and vertical deviations for the positioning of the crossbeams, and measure the cumulative offset at the top for use in the next construction section; for the 2nd to Nth construction sections, after correcting the deviation of the embedded parts in this section with the cumulative offset at the top of the previous construction section, follow the same logic as the average absorption deviation of the columns and the distribution of the remaining deviation of the crossbeams, and complete the positioning and installation of the columns and crossbeams in each section in sequence, and determine the segment deviation threshold according to the proportion of the number of segments in this section to the total number of segments for judgment.

2. The error-sharing and positioning method for glass curtain wall keel installation according to claim 1, characterized in that, Step two specifically involves: For the first construction section, calculating the arithmetic mean μ of the original normal deviations of all the grids covered by the same column within that construction section. f1 = (Σd i f ) / m1, the arithmetic mean of the original horizontal deviations μ h1 = (Σd i h The arithmetic mean μ of the initial vertical deviation and the vertical deviation. v1 = (Σd i v ) / m1, where m1 is the total number of grids covered by the column in the first construction section, representing the normal offset, horizontal offset, and vertical offset of the column in that construction section; the column and the embedded parts are connected by a three-dimensional adjustable adapter; according to μ f1 μ h1 μ v1 Adjust the three-dimensional adjustable adapter connector to position the column, and check that the column's verticality deviation does not exceed one-thousandth of the column height within the construction section and has a maximum deviation of five millimeters; for each segment within the construction section, calculate the residual horizontal deviation r of that segment. i h = d i h - μ h1 Vertical residual deviation r i v = d i v - μ v1 According to r i v Adjust the installation elevation line of the crossbeam according to r i h Adjust the planar positioning lines of the crossbeam; the normal position of the crossbeam is determined by the positioned columns. After installation, select at least one verification point on the outer side of the top column of the construction section and measure the difference between its actual three-dimensional coordinates and design coordinates in three directions. This difference will be used as the cumulative offset C1 at the top of the construction section. f C1 h C1 v .

3. The error-sharing and positioning method for glass curtain wall keel installation according to claim 2, characterized in that, It also includes step three, where for the k-th construction segment, where k is an integer from 2 to N, the cumulative offset C(k-1) at the top of the previous construction segment is first obtained. f C(k-1) h C(k-1) v Then, for each embedded part within the construction section, the effective normal deviation e is calculated. i f =d i f - C(k-1) f Horizontal effective deviation e i h = d i h - C(k-1) h Vertical effective deviation e i v = d i v - C(k-1) v Calculate the sum of the absolute values ​​of the effective normal deviations of all embedded parts within the construction section, E. f = Σ|e i f | The sum of the absolute values ​​of the effective horizontal deviations E h = Σ|e i h |and the sum of the absolute values ​​of the effective vertical deviations, E v = Σ|e i v | and calculate the segment deviation threshold in each direction of the construction section according to the following formula: t f = T f × (mk / M), t h = T h × (mk / M), t v = T v × (mk / M), where mk is the total number of grids covered by the column in the k-th construction section, and M is the total number of grids for the positioning axis; if E f E h E v Any value in the range exceeds the corresponding t f t h t v Then report to the design unit to adjust the curtain wall panel dimensions; if E f ≤ t f E h ≤ t h And E v ≤ t v Then calculate the arithmetic mean ν of the effective normal deviations of all the grids covered by the same column within the construction section. fk = (Σe i f ) / mk, the arithmetic mean of the horizontal effective deviation ν hk = (Σe i h ) / mk, the arithmetic mean of the vertical effective deviation ν vk = (Σe i v ) / mk, as the normal offset, horizontal offset, and vertical offset of the column in this construction section; the actual coordinates of the top of the previous construction section are used as the positioning reference for the bottom of the column in this construction section, so that the normal, horizontal, and vertical positions of the column in this construction section all start from this positioning reference, according to ν fk ν hk ν vk Position and install the columns for this construction section, checking that their verticality deviation does not exceed one-thousandth of the column height within the section and has a maximum deviation of five millimeters. After installation, calculate the remaining horizontal deviation s for each section. i h = e i h - ν hk Vertical residual deviation s i v = e i v - ν vk According to s i h Adjust the horizontal beam plane positioning line according to s i v Adjust the installation elevation line of the crossbeam; the normal position of the crossbeam is determined by the actual position of the column in this construction section. Then, measure the difference between the actual coordinates and the design coordinates of the verification point on the outer side of the top column of this construction section, and use this as the cumulative offset Ck at the top of the construction section. f 、Ck h 、Ck v , for use in the next construction section.

4. The error-sharing and positioning method for glass curtain wall keel installation according to claim 3, characterized in that, The process also includes: Step four, after the columns and beams of all N construction sections are installed, measuring the actual coordinates of the columns and beams in each grid, calculating the difference between them and the design coordinates in each direction, and adding the difference to the corresponding direction of the design coordinates of the glass panel hole positions as the installation positioning coordinates of each connector; the connector is connected to the column or beam through a three-dimensional adjustment device, and the adjustment amount of the three-dimensional adjustment device in each direction is not less than the sum of the absolute value of the maximum original deviation of the embedded part in the corresponding construction section and the absolute value of the cumulative offset at the top of the construction section in that direction; during installation, the theoretical center distance between two adjacent connectors in the design drawings is used as a reference, and the plane position and elevation of each connector are adjusted by the three-dimensional adjustment device so that the center distance deviation and center height difference between two adjacent connectors are controlled between -1 mm and +1 mm.

5. The error-sharing and positioning method for glass curtain wall keel installation according to claim 4, characterized in that, It also includes step five, where the connecting claw is installed on the connecting seat. The connecting claw has a supporting surface for supporting the glass panel, and the height of the supporting surface is independently adjusted by the shim between the connecting claw and the connecting seat. When installing the connector claws, use the support surfaces of the four connector claws in the same compartment as a reference, and adjust the shims to ensure that the flatness deviation between the four support surfaces is less than 0.5 mm.

6. The error-sharing and positioning method for glass curtain wall keel installation according to claim 3, characterized in that, In step three, after calculating the sum of the absolute values ​​of the effective normal deviations Ef, the sum of the absolute values ​​of the effective horizontal deviations Eh, and the sum of the absolute values ​​of the effective vertical deviations Ev of all embedded parts in the k-th construction segment, before comparing them with the segmented deviation thresholds tf, th, and tv, the following correction steps are performed: Obtain the cumulative normal offset C(k-1)f, the cumulative horizontal offset C(k-1)h, and the cumulative vertical offset C(k-1)v at the top of the previous construction segment, and obtain the preset single-segment deviation threshold upper limits Uf, Uh, and Uv for each direction of the previous construction segment, where the values ​​of Uf, Uh, and Uv range from 5% to 15% of the total deviation thresholds Tf, Th, and Tv for the corresponding direction; calculate the cumulative offset saturation λf = |C(k-1)f| / Uf, λh = |C(k-1)h| / Uh, and λv = |C(k-1)v| / Uv for each direction; determine for each direction: if λf > If λh > 0.8, the normal segment deviation threshold is corrected to tf' = tf × (1 + α × (λf - 0.8) / 0.2); if λh > 0.8, the horizontal segment deviation threshold is corrected to th' = th × (1 + α × (λh - 0.8) / 0.2); if λv > 0.8, the vertical segment deviation threshold is corrected to tv' = tv × (1 + α × (λv - 0.8) / 0.2). Where α is the correction coefficient, with a value ranging from 0.3 to 0.7; then the original tf, th, and tv are replaced by the corrected segment deviation thresholds and compared with Ef, Eh, and Ev; if Ef, Eh, and Ev in any direction exceed the corresponding corrected segment deviation threshold, the design unit is notified to adjust the curtain wall panel size; if Ef, Eh, and Ev in all directions do not exceed the corresponding corrected segment deviation threshold, the arithmetic mean of the effective deviation of the columns in the normal direction within the construction section continues to be calculated.

7. The error-sharing and positioning method for glass curtain wall keel installation according to claim 3, characterized in that, In step three, the cumulative offset Ck at the top of the kth construction segment is measured. f 、Ck h 、Ck v Then, before performing calculations for the next construction section, the following correction steps are performed: At least three verification points are selected horizontally along the outer side of the column at the same height at the top of the construction section. At least one verification point is located on the outer side of the column on this positioning axis, and at least two verification points are located on the outer side of the column on adjacent positioning axes. The difference between the actual three-dimensional coordinates and the design coordinates of each verification point is measured in each direction. The measured offsets of at least three discrete points distributed along the length of the main structure at this height are obtained. The measured offset of the j-th verification point is denoted as Uj. f 、Uj h 、Uj v ; Calculate the arithmetic mean A of the measured offsets of at least three discrete points in the same direction. f A h A v The arithmetic mean of this value is then compared with the cumulative offset Ck measured at the top of the k-th construction segment. f 、Ck h 、Ck v Compare the values ​​in the same direction separately and calculate the deviation Δ in each direction. f = |A f - Ck f |、Δ h = |A h -Ck h |、Δ v = |A v - Ck v If the deviation in any direction exceeds the preset measurement error threshold ε f ε h ε v , where ε f ε h ε v The value range is the total deviation threshold T in the corresponding direction. f T h T v If the error is between 1% and 5%, the current measurement result is determined to contain abnormal measurement error, and the current Ck is discarded. f 、Ck h 、Ck v Instead, use the arithmetic mean A of the measured offsets of all verification points at that height. f A h A v The cumulative offset at the top of the k-th construction segment is used for the next construction segment; if the deviation values ​​in all directions do not exceed the corresponding measurement error threshold, the original Ck is retained. f 、Ck h 、Ck v For use in the next construction section.

8. The error-sharing and positioning method for glass curtain wall keel installation according to claim 2 or 3, characterized in that, In step two or three, for multiple curtain wall panels continuously arranged along the length of the main structure at the same elevation within the same construction section, the horizontal residual deviation r of each panel is calculated. i h or s i h Before adjusting the horizontal beam positioning line, perform the following smoothing steps: Obtain the horizontal residual deviation values ​​of all curtain wall sections at the same elevation within the construction section, and arrange them in sequence as R1, R2, ..., R L Where L is the total number of consecutive grids on the positioning axis at this elevation, and L is an integer greater than or equal to 2; from i=1 to i=L-1, the horizontal residual deviation R between two adjacent grids is determined sequentially. i and R {i+1} The product of R, if R i × R {i+1} If the value is less than 0, then a conflict with opposite signs is determined to exist between adjacent positions; for each conflicting position, the conflict span value D = |R i | + |R {i+1} | and obtain the preset maximum adjustment step size S for a single segment in that direction. The value of S ranges from one-thousandth to five-thousandths of the horizontal spacing between adjacent embedded parts within the construction segment; if D ≤ S, then the horizontal residual deviation of the two adjacent segments is forcibly corrected to zero, that is, the beam is installed according to the design plane position; if D > S, then R is reduced proportionally. i and R {i+1} The absolute value of R, the reduced value i ' = R i × (S / D), R {i+1} ' = R {i+1} × (S / D), making the sum of the absolute values ​​of the two remaining deviations equal to S, while retaining the original sign; the corrected R i 'and R {i+1} 'Replace the original R' i and R {i+1} The beam plane positioning lines of the two adjacent grids are adjusted; for adjacent positions that do not conflict, the original remaining deviation value is retained; after the remaining deviations of all grids have been smoothed as described above, the beam plane positioning lines of each grid are adjusted according to the processed remaining deviation values.