The fire safety upgrade of the underground passenger station enhances passenger safety while addressing the challenges of a constrained historic infrastructure. A fully BIM-based planning process enables the precise coordination of technical systems, existing conditions and operational requirements.
Underground transport facilities present particularly demanding requirements for the planning of safe escape and rescue routes. The project aims to ensure safe self-evacuation and assisted rescue in the event of a fire while upgrading the existing infrastructure to meet current fire safety standards. At the same time, the design carefully responds to limited spatial conditions, heritage protection requirements and the continuous operation of the station. A central element of the project is the design of a high-performance mechanical smoke extraction system that keeps escape and rescue routes as smoke-free as possible during an emergency. An additional staircase at the southern end of the platform further improves evacuation by reducing escape times and distributing passenger flows more evenly across the available routes. The entire project is developed using a fully integrated BIM workflow. From detailed 3D surveys and discipline-specific models to coordinated BIM models, issue management, model-based quantity take-offs and cost estimation, as well as 4D construction sequencing and 3D visualisation, the digital planning approach provides a reliable foundation for accurate design, efficient interdisciplinary collaboration and transparent project delivery.
