Application of Building Information Modelling to Tension-Based Ground Reinforcement Systems

Abstract Building Information Modelling (BIM) finds increasing appreciation in geotechnical engineering but requires efficient means of modelling and functional data structures. The lack of both is a typical obstacle for many BIM projects. In response, this paper demonstrates parametric BIM modelling at the example of tension supporting elements (i.e. anchors, soil nails, rockbolts etc.) which are used in almost every geotechnical project. A generalisable and scalable BIM data structure for tension supporting elements is proposed that is applicable throughout a project’s life cycle from planning to maintenance. The data structure describes the required Level of Development (LOD) for geometries and metadata in correlation with project progress. Project cases in Norway are used to demonstrate BIM modelling of rockbolts in tunnels, slopes and foundation works. The data structure is expandable such that maintenance-related information at different periods can be appended and back-traced. Even though realisation and testing in real projects are necessary, the proposed data structure is already proven to be compatible with parametric design, the most used LOD frameworks, and common data exchange formats e.g. “Industry Foundation Classes” for BIM.