Method for Improving the Detection Accuracy of Verticality of High Tower Structure
A technology for detecting accuracy and verticality, which is applied in the determination of fixed angles and other directions, can solve problems such as the difficulty in controlling the structural accuracy of high-rise towers, and achieve the effects of easy implementation, simple and clear process, and clear discrimination conditions
Active Publication Date: 2022-02-22
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology
[0007] The purpose of the present invention is to make up for the defect that the existing engineering surveying method is difficult to control the accuracy when detecting the verticality of the high-rise tower structure, and to provide a method for improving the detection accuracy of the verticality of the high-rise tower structure
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[0050] The present invention is further detailed below with reference to the accompanying drawings and examples.
[0051] The basic idea of the present invention is to use the whole station or the teenage and weft to measure the tower coordinates, such as figure 1 As shown, on this, the measurement point of the non-feature cross section is first removed by identifying the difference between the measurement point elevation coordinates, and further fit the center coordinates and radius of each section, calculate the distance deviation of each measurement point distance of the proposed circle. The robust estimation method is greatly likelihood estimation guidelines, using the Huber option iterative method, gives different weights, distinguishes and gradually deletes the error in the measured value sequence, and then errors in the measuring point in the measuring point and final The number of effective measurement points participating in the calculation will control the integration ...
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The invention provides a method for improving the verticality detection accuracy of a high-rise tower tube structure. The method eliminates the measurement points of non-characteristic sections by identifying the difference in the elevation coordinates of the measurement points; on the basis of the least squares fitting results, Introduce the maximum likelihood estimation criterion of the robust estimation method, and according to the characteristics of equal-weight independent observations of the measuring points, use the Huber weight selection iterative method to assign different weights to the measured values, distinguish and gradually delete the systematic errors, Abnormal measuring points with large errors such as accidental errors and gross errors; at the same time, the overall control of the measurement accuracy is carried out according to the errors in the final measuring point position and the number of effective measuring points. In the detection of the verticality of the towering tower structure, the present invention has the ability to resist or eliminate abnormal errors such as systematic errors and gross errors caused by various factors in the observation process, and improves the verticality of the towering tower structure by improving stability and tolerance. degree of detection accuracy.
Description
Technical field [0001] The present invention belongs to the technical field of the deformation measurement of the tower building, and is specifically related to the method of improving the verticality detection accuracy of the towering tube structure. Background technique [0002] Such as wind turbines tower, thermal power plant cooling towers, chimneys, water towers, etc. have strong sensitivity to build structural safety, which is an important basis for assessing the quality of engineering quality and operating conditions. Under the long-term wind load, internal and top equipment self-emphasis and reciprocating load, the structure is not uniformly sinking, and the structural connection flange bolts are loose, tower is tilted, and the tower eccentric displacement exceeds allowed Value and other phenomena, resulting in a larger level of horizontal deviation at the top and bottom of the tower, under load, producing a large eccentric bending moment, bringing a large safety hazard t...
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CPCG01C15/12
Inventor 程帅汪俊波陈仓兰昊杨世强南江郭巍李晓博夏林姚兵印王靖程米珂张小刚
Owner XIAN THERMAL POWER RES INST CO LTD