A system for constructing a three-dimensional surface BIM model based on a topographic map

Abstract

The invention provides a system for constructing a three-dimensional surface BIM model based on a topographic map. The system comprises a topographic map data partitioning module, a construction areadata extraction module, a contour line data extraction module, a contour line data recovery module, a three-dimensional surface modeling module, a road central axis plane coordinate data and road width calculation module, a road central axis elevation data calculation module, a road pavement polygonal belt modeling module, a road surface polygon belt model correction module, a three-dimensional curved surface modeling module, a three-dimensional straight wall modeling module, a road slope modeling module based on elevation points, a road slope modeling module based on road slope boundary contour lines, a road three-dimensional straight wall modeling module, a building three-dimensional modeling module and a three-dimensional surface BIM integration module. The whole topographic map is decomposed into the contour line area and the structure area, and therefore terrain and structure integrated three-dimensional surface BIM modeling can be effectively supported.

Description

technical field [0001] The invention relates to the field of BIM application technology, in particular to a system for constructing a three-dimensional surface BIM model based on topographic maps. Background technique [0002] The engineering construction industry is comprehensively promoting the application of Building Information Model (BIM, Building Information Model) in the whole process life cycle of planning, surveying, design, construction and operation. At present, BIM has made some substantive applications and progress mainly in the design stage and construction stage, while the BIM application in the survey stage is basically in its infancy. It is difficult to ensure the topological consistency between the existing surface BIM model and road, building and other models. Making full use of traditional topographic maps and constructing topologically consistent 3D surface BIM models of terrain, road networks, buildings, etc. in accordance with the BIM application requi...

AI Technical Summary

Problems solved by technology

At present, BIM has made some substantive applications and progress mainly in the design stage and construction stage, while the BIM application in the survey stage is basically in its infancy. It is difficult to ensure topological consistency between the existing surface BIM model and road, building and other models.

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