Method for converting arbitrary coordinate conversion system of BIM into construction coordinate system

Abstract

The invention provides a method for converting an arbitrary coordinate conversion system of BIM into a construction coordinate system. The method comprises the steps of calculating azimuth angles and various side lengths between known control points and axis intersections separately by using the known control points in the construction coordinate system and known axis intersection coordinates in a construction plane layout chart; grabbing arbitrary coordinate values of the axis intersections in the arbitrary coordinate system of a BIM model, calculating arbitrary azimuth angles and distances of the axis intersections and reversely deducing the coordinates of the control points in the arbitrary coordinate system; and carrying out back calculation on arbitrary coordinates of various structures grabbed in the BIM model and arbitrary coordinate values of the control points, calculating the numerical values, such as the included angles and the side lengths, between arbitrary coordinate points of the structures and the control points and calculating the coordinates of various structures grabbed in the BIM model, thereby meeting site construction layout.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a method for converting a construction coordinate system from a BIM arbitrary coordinate conversion system. Background technique [0002] With the rapid promotion and application of BIM technology in the field of building construction, because the BIM model is drawn at any position in the software, its coordinate system is an arbitrary coordinate system, and the coordinates of any coordinate system in the BIM model must be converted into the construction coordinate system. Only the structural feature points captured in the BIM model can be directly set out on the construction site. [0003] The current common method is: convert the BIM building model into DXF form, and then import it into CAD software, and convert the model into a plane view in CAD by calculating the rotation angle and translation distance, and rotate and translate the graphics according to the calc...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a method for converting the construction coordinate system from any coordinate conversion system of BIM, which solves the problem that the arbitrary coordinate system and the on-site construction coordinate system cannot be unified when drawing the BIM building model, and at the same time ensures that the model is performing angle conversion and distance translation The accuracy of the process, and improve the accuracy of the converted coordinates and the efficiency of the conversion

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