To achieve a 45 per cent capacity increase at Bank-Monument Station, one of the busiest stations on London’s Underground network, designers turned to 3D modelling software from Bentley Systems.
In 2013, London Underground Limited decided that an upgrade to Bank-Monument Station would be required to cope with a 50 per cent increase in passengers over the past 10 years and future frequency upgrades on the Northern Line.
The project aimed to improve passenger access, circulation, and interchange, with a 45 per cent lift in capacity during peak hours.
To achieve this, the project team required a model of the station design and a simulation tool for validation and passenger flow analysis.
London Underground Limited turned to Bentley Systems’ OpenBuildings Station Designer for the station design, which involves a maze of complex routes covering five underground lines including a terminating line, a Docklands Light Railway terminus, three ticket halls, 10 platforms, 15 escalators and two 300-foot moving walkways.
To improve passenger flow, the team used LEGION Simulator to map current routes, which due to their complexity and indirect nature cause crossflow, confusion, and crowding, making the station challenging to manage.
“LEGION is one of a suite of applications used by Transport for London to assess and quantify station congestion impacts across the network. It is instrumental in the support of business cases, providing not only visual outputs identifying congestion hotspots, but also outputs that can easily be monetised, directly contributing to the calculation of a benefit-cost ratio of a project,” said Madeleine Cox, principal planner, London Underground Limited.
When designing the future station, LEGION Simulator enabled optimised station layouts through simulations of operations tests, commercial use, and business cases. This led to time savings of 197 seconds for the morning peak and 37 seconds for the evening peak.
Accessibility upgrades were also modelled and simulated with the software, and the location of two new lifts was determined through the software, while enabling wayfinding.
The proposed design accounts for projected capacity on the network to 2026 plus a 31 per cent buffer. This means the project future proofs the station until 2081. The upgraded station will also reduce closures and increase control measures at nearby stations. Operational carbon dioxide emissions will also be reduced, by an estimated 23 per cent.