Key technologies of building information model integration and simulation in geotechnical engineering

How to effectively integrate and simulate complex geological body and engineering structures on BIM (building information model) platform is a challenging problem faced in geotechnical engineering. This paper aims to propose an integrated modeling and simulation technology for complex geological body and engineering structures. A triangular mesh modeling plug-in is first developed based on BIM platform for complex geological bodies, and a NURBS surface is then built through sample surface reconstruction to ensure the consistency in data storage and mathematical expression between three-dimensional (3D) geological model and engineering structure model. Meanwhile, the component library and parametric generator are created to realize the customized modeling of geotechnical engineering structures. Furthermore, dynamic construction modelling and numerical simulation model conversion technology are proposed to realize the collaborative and calculable function of integrated BIM model, which provides an effective way to deepen the application of Bat technology in geotechnical engineering. Finally, a demonstration application is carried out based on the Shiyan hill-cutting and land-reclamation project. The BIM integrated modeling and simulation technology of complex geological body and engineering structure is applied to realizing the integration of model construction and simulation analysis, which verifies the effectiveness and applicability of the proposed technology.