Method for checking position of prefabricated steel component based on three-dimensional scanner technology

Abstract

The invention relates to a method for checking the position of a prefabricated steel component based on a three-dimensional scanner technology. More than three measurement targets are set; a scanner is erected, a prefabricated component is scanned, and data of the scanner are read; fitting of feature points of the prefabricated component is performed, and theoretical coordinates of the feature points are calculated; the theoretical coordinates and the feature points are matched to obtain a spatial stereoscopic part of the prefabricated component; and comparison with a theoretical position is performed to obtain an offset of the prefabricated component. According to the invention, a problem of difficult quality checking of the prefabricated three-dimensional complex prefabricated componentsin the workshop is solved. With the provided method, an accurate inspection result can be obtained and thus the basis is provided for adjusting the actual position of the on-site installation. Moreover, erection becomes flexible and measurement becomes convenient; space of other construction processes is not occupied; and the demand of the construction schedule optimization is satisfied.

Description

technical field [0001] The invention relates to an inspection method for workshop prefabricated steel components, in particular to an inspection method for workshop prefabricated steel components in a complex three-dimensional structure state, and also relates to the positioning inspection of arbitrary station measurement and design, belonging to the technical field of civil construction. Background technique [0002] The inspection of prefabricated steel components with complex three-dimensional structures is difficult. For example, in the second phase of the Zhejiang Buddhist Academy (Maitreya Shrine) project, the inverted cone-pillar Tiangong of Mount Sumeru is composed of 8 inclined columns, which are inclined outward by 6.4° through the center façade. The structural column is divided into four sections, each section is spliced ​​into a whole by the annular and vertical and horizontal legs of the two platforms. The length of the first section is 10306, the bottom elevatio...

AI Technical Summary

Problems solved by technology

For a long time, the inspection has used a total station and calculated the position in advance according to the theoretical value, and set the measurement benchmark. The calculation work is labor-intensive, labor-intensive and time-consuming. The assumed value deviates from the actual situation on site, which affects the accuracy and progress of the inspection.

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