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The Gallery | First Crossrail station construction complete

Construction of Crossrail Canary Wharf station is now complete, with the ticket hall and platform levels handed over to project promoter Crossrail.

This marks completion of the first new station for the £15bn trans-London project, and means focus will shift at Canary Wharf to the complex process of fitting out the station with all the systems needed to operate passenger services.

Crossrail will undertake this work, which includes the installation of communications equipment, signalling, tunnel ventilation, platform screen doors and overhead line equipment.

Mayor of London Boris Johnson said: “This spectacular new station is being delivered ahead of schedule and is a pivotal moment in our Crossrail journey, as we can now prepare for the next major stage of work ahead of the launch of services in 2018.

“This vital new railway is already proving a huge success for the UK economy and when complete it will boost London’s rail capacity by 10%, providing an enormous benefit to passengers travelling across the capital and beyond.”

Work began on the new station in May 2009 with creation of a 250m by 30m watertight dam in the waters of North Dock using an innovative ‘silent’ piling method.

The £500M station box was then built ‘top down,’ 28m below the water surface to create the ticket hall and platform levels.

Crossrail said that over six and a half years the construction team had driven almost 1,000 piles and pumped nearly 100M litres of dock water. Approximately 300,000t of material has been excavated from beneath the dock bed and almost 375,000t of concrete poured.

Situated in the North Dock of West India Quay, Canary Wharf is one of the largest Crossrail stations. The station, retail and park areas are six storeys high and at 256m long the development is slightly longer than the height of One Canada Square.

Also delivered was Crossrail Place - a four-storey retail development with a timber lattice roof above the ticket hall and platform levels. It was opened on 1 May and includes more than 9,300m2 of retail space.

Crossrail will bring an extra 1.5M people within 45 minutes of central London.

Canary Wharf station construction: facts and figures

  • Station footprint: 256m long
  • Width: varies from 25m to 30m
  • Gross floor area: 29,200m2
  • Concourse: 185m long, 23m to 28m wide and 4.4m high
  • Platform: 241m long, 14.6m wide and 4.25m to 4.7m high
  • Total Escalators: 17
  • Total Lifts: 6
  • Total escape staircases: four at 2.8m wide from platform to promenade.

Enabling Works

  • Surrounded by 10m-deep dock water
  • A further 18m excavation below dock bed level
  • Almost 1,000 piles in total
  • 293 Giken tube piles for the three-sided cofferdam wall – Japanese ‘silent’ piling system.
  • 120 Anchor piles

Cofferdam Dewatering

  • 98M.l of dock water were removed from inside the cofferdam over a five week period equating to enough dock water to fill 40 Olympic sized swimming pools.
  • The fish removed and relocated.

Station Box Construction

  • 71 Tension piles
  • 30 plunge columns
  • Secant pile wall from dock bed to form the south wall.
  • Top down construction within the coffer dam
  • 300,000t of material excavated
  • Almost 375,000t of concrete poured

Platform

  • 580 precast platform units
  • Each unit is 4.0m x 2.5m
  • Average unit weight 3.5t
  • Each unit craned 27m down to the base slab

Cantilever Roof Arch

  • Each steel arch weighs 30t to 35t
  • Each arch is delivered in five sections
  • Each section weighs around 6t
  • Each section on average is 20m long

 

 

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