Abstract: An important function of Building Information Modeling（BIM） technology in integrated pipeline design is to solve pipeline collision problem. However, the efficiency of manually drawing and adjusting the pipeline is low, so this paper combines Revit secondary development technology to realize the rapid adjustment and optimization of BIM-based pipelines. Firstly, the primitive information in the integrated pipeline model is extracted, and a hybrid collision detection algorithm based on AABB and spatial geometry is constructed to identify the pipeline that generates the collision. Then, the integrated pipeline engineering design specification is parameterized, and the pipeline adjustment optimization algorithm is proposed to determine the pipeline to be adjusted and the adjustment range. Thereby, the automatic adjustment and optimization of the collision pipeline is realized, and the engineering design efficiency is improved.

Key words: pipeline optimization, collision detection, automatic optimization, AABB, Building Information Modeling (BIM)