Visual terrain and pile length model based on BIM (Building Information Modeling) technology

The invention discloses a BIM (Building Information Modeling) technology-based visual terrain and pile length model, which comprises a terrain curved surface system, a pile foundation model system and a result application system, and is characterized in that the terrain curved surface system comprises a curved surface model of each stratum at the lower part of a site; the pile foundation model system comprises a project pile foundation model and related parameter input and output; the achievement application system comprises auxiliary construction, model lightweight and BIM5D platform management. According to the invention, the time cost can be greatly reduced. Compared with traditional pile length calculation, the time for integrating the stratum section into the table is removed, the method can complete elevation data extraction of the pile position on each stratum within one hour, relevant applications such as stratum visualization display and the like can be carried out subsequently, and time and great co