Challenges for the Implementation of BIM Methodology in the Execution of Underground Works

After a few years of the coexistence of the building information modelling (BIM) methodology with the architecture, engineering, and construction professions, its main uses are often limited to 3D modelling and collision checking between different disciplines. However, while this way of working demonstrates opportunities for optimization and clear benefits, there is still much potential for the BIM methodology to be explored. In the scope of a particular underground work, the Arnotegi tunnels of the Bilbao Metropolitan Southern Bypass, a specific contractual framework favouring the collaboration among stakeholders has been defined to implement the use of this methodology by the main participants in the project, encouraging more advanced uses, such as the use of the model as an integrator of the information contained in the common data environment. Due to the very essence of tunnel construction and the relative geotechnical uncertainty of the terrain, the tunnel model evolves day by day during the course of the work, with information being shared in real time between all those involved. This approach has made it possible to improve the quality of decisions and the perception of important information by presenting it in a transparent and easily interpretable way.

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