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“Radical Redesign saves Crossrail £50m on Whitechapel Station”
Presenter: Hugo Axel-Berg Manager of Engineering West Central Area Crossrail Ltd.
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• Putting safety first on the agenda at every meeting
• Conducting weekly “toolbox talks” on a range of issues affecting designers in the office for all staff
• Encouraging all staff working on the project to have the appropriate CSCS accreditation
• Providing safety training for all staff covering CDM, workplace and site safety.
Safety in Design
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90 km existing alignment 21 km new twin bore tunnels 8 new underground stations Extension/ renovation / improvements to 28 surface stations 24 trains / hr 200 million passengers per year
Crossrail...Currently Europe‘s largest civil engineering project
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Changing Stations
Existing
Proposed
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Whitechapel Station Interchange
Durward
Street Shaft
Cambridge
Heath Shaft Swanlea School
Kempton Court
Royal London
Hospital
Whitechapel
Sports Centre
Whitechapel Station
Sainsburys
The Whitechapel Vision |
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Whitechapel Station Interchange
The Whitechapel Vision | Design Strategy
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Whitechapel Station Interchange
Station Design | Station ‘Bridge’ Concept
Social Benefits
- Improved accessibility
- Intuitive wayfinding
- Inclusive design
Economic Benefits
- Invigorates High Street
- Optimises footfall
- Optimised Journey time
Environmental Benefits
- Reduced excavation
- Increased daylight levels
- Optimises natural ventilation
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Whitechapel Station Interchange
Station Design | Passenger Flow Analysis
Passenger Flow Analysis
- Improved wayfinding
- Improved accessibility
- More daylight
- Less turns
- Shorter journey times
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Whitechapel Station Interchange
Station Design | Design and Character
The Entrance
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Whitechapel Station Interchange
Station Design | Lower Concourse
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Whitechapel Station Interchange
Durward Street Shaft
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Whitechapel Station Interchange
Station Concourse
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Whitechapel Station Interchange
Station Design | Lower Concourse
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Whitechapel Station Interchange
Station Design | Platforms
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Whitechapel Station Interchange
2011 2012 2013 2014
SCL Starts
D-wall starts
Pilot Tunnels
complete
Platform Tunnels
complete
D-wall excavated
LCW2 VA5 EP1
LCE CP1a
TBMs Launched
Westwards
Geotechnical Monitoring
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Whitechapel Station Interchange
Strengthening measures
School
• Strengthening foundations – piles – prior to tunnelling
Sport Hall
• Repair after construction
Residential Block
• Ground improvement, grout injection – prior to tunnelling
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Whitechapel Station Interchange
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Whitechapel Station Interchange
The design changes we made:
• Change to north-south alignment from east-west
• New concourse design
• Demolition of Winthrop St and Durward St Bridges
• Removed Fulbourne St ticket office
• New internal configuration of Durward St Shaft
• Inclusion of new public walkway
• GSM refurbished, not demolished
• Reduction in excavation
• Sustainable design features, e.g. green roof and wall.
In summary…
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Whitechapel Station Interchange
How was it done?
• Thinking laterally • Embracing change • Listening to and understanding the needs of the client • Delivering for the client • Working collaboratively with all teams on the project
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Whitechapel Station Interchange
Questions