GeoSS Evening Seminar – The Step Free Access Project at Finsbury Park, London Underground, UK

About:

Finsbury Park is a busy intermodal interchange station in north London. The interchange consists of a National Rail station, a London Underground station and two bus stations, all interconnected. It has been a strategy of successive Mayors to improve and increase accessibility on the underground network, Finsbury Park station being a major transport interchange station outside of zone 1, was earmarked as one of the key stations to be made step free. In 2015, a Contract was awarded for the Civil and structural elements of the works. The location of the site within the heavily congested existing underground rail network of central London made for challenging design, temporary support and propping, excavation and permanent works installations. Whilst not regarded as a typical mega –project, the site constraints provided all the same technical demands, and more, which are experienced on larger projects.

The works are constructed adjacent to and under the high speed electrified East Coast Main line railway with trains running at all times. In addition, the new works tunnelled adjacent to and connected to existing cast iron station tunnels which themselves were directly beneath the high-speed railway. All this infrastructure was at risk if movements were excessive. The temporary works were quite complex. The presentation will provide an outline of the feasibility and concept through to detail design and execution. In particular the unique techniquesutilizing sequential excavation and support system to minimise ground movement, keep the trains running and the station open at all times.

Pdf copy (27mb) of the PPT is available online for logged in users.

 

From date: 26/02/2018

To date: 26/02/2018

Organized by: GeoSS