Measuring method for overall geometrical initial defects of structural components

Abstract

The invention discloses a total geometric primary defect measuring method of a structural element, which belongs to the field of defect measurement of structural elements. The method comprises the followings steps that: routine measuring tools, namely an ordinary optical theodolite and a vernier calliper, are adopted; the theodolite is arranged on a tripod, the vertical axis of the theodolite is fixed, and a virtual reference line is positioned around the element by a cross wire intersection point by using a lens barrel rotating around a horizontal axis; and the vernier calliper is used for measuring the distance between an edge of the element at different cross sections of the element and the reference line. The element can be transversely or vertically fixed on the ground without special requirements on the field and element auxiliary fixing devices; the measurement precision is greatly improved; and the method is simple and practical.

Description

technical field [0001] The invention relates to the field of defect measurement of structural engineering steel structures, in particular to a method for measuring the overall geometric initial defect of a structural member, which involves defect measurement of the structural member and test research on the stability performance of the structural member. Background technique [0002] The construction quality acceptance specification of structural engineering has specific requirements for the deviation of the main structural components (such as columns and beams), especially the value of the initial defects of the overall geometry (such as initial bending); at the same time, in the field of steel structure research, stability issues The research of is one of the most important subjects, and the initial geometric defect is just the most important factor affecting the stability of the component, so in the relevant experimental research must have accurate measurement data of the ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that existing technical methods cannot measure the overall geometric initial defects of structural components more accurately and quickly, the present invention proposes a new type of geometric initial defect measurement method, which does not require large-scale complex equipment and special site conditions. In combination with the most commonly used measurement tools, it replaces the traditional measurement methods such as the wire drawing method, which greatly reduces the human error and improves the measurement accuracy. needs

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