The invention relates to a method for automatically generating a multi-professional
pipe network BIM model based on a CAD drawing of a graph neural network, comprising:
pipe network CAD drawing
information analysis and multi-professional
pipe network BIM model generation, the pipe network CAD drawing
information analysis comprising graph neural
network model construction, CAD drawing analysis based on the graph neural
network model, legend table analysis and multi-graph
information aggregation; the multi-professional pipe network BIM model is generated based on the extracted pipe
network component information, and different reconstruction strategies are adopted for different types of pipe network components. According to the method, an automatic building pipe network CAD drawing analysis technical
route combining
deep learning driving and
knowledge rule constraint is constructed, symbol primitive semantic extraction is carried out based on a graph neural network, high-accuracy symbol and layer automatic identification is realized, a pipe network
system expressed by multiple CAD drawings is converted into a graph structure, and the method is suitable for large-scale popularization and application. And entity matching and
information aggregation are carried out on a plurality of drawings and a plurality of graph structures, so that an automatic, efficient and high-stability building pipe network
system information model reconstruction task is realized.