Digital pre-assembling method of building steel structure based on three-dimensional scanning and reverse modeling

Abstract

The invention relates to a digital pre-assembling method of a building steel structure based on three-dimensional scanning and reverse modeling. The method comprises the following steps: step one, carrying out component manufacturing; step two, carrying out component scanning, step three, carrying out point cloud processing; step four, carrying out reverse modeling of a component; step five, carrying out component error checking; step six, carrying out structural assembling; step seven, carrying out overall assembling error checking; and step eight, finishing pre-assembling. According to the invention, all information of components including a bolt hole and small hidden parts can be reflected completely; with reverse modeling, massive stored point cloud data are processed by fitting to obtain an entity model; the data volume is reduced for follow-up pre assembling and entity model displaying; the computer burden is reduced; and the pre assembling efficiency of the computer is improved substantially. On the basis of the optimization-algorithm-based digital pre assembling technique, optimized pre assembling is carried out on the fitted entity component model.

Description

technical field [0001] The invention relates to a digital pre-assembly method for a building steel structure, in particular to a digital pre-assembly method for a building steel structure based on three-dimensional scanning and reverse modeling. Background technique [0002] Steel structures such as reinforced floors (truss floors) in super high-rise buildings, long-span venues, airports, and railway stations have complex component forms, and there is a strong spatial correlation between components, so the manufacturing accuracy of the interface between components The requirements are very high, and sometimes the on-site assembly and installation requirements cannot be met only by controlling the accuracy of a single component. In order to solve this problem, in general, for complex large-scale components, physical pre-assembly in the processing plant is usually required. [0003] Traditional component pre-assembly requires a wider and flat site, larger lifting equipment, a...

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Problems solved by technology

[0006] The present invention aims to overcome the defects of the prior art, provide a digital pre-assembly method for building steel structures based on three-dimensional scanning and reverse modeling, and solve the problem of time-consuming and labor-intensive problems of traditional physical pre-assembly occupying a large number of assembly sites and large lifting equipment. Issues with potential safety hazards

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