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Tunnel Design & Specialities

Green Park Station Upgrade

Service Performed
Tunnel and shaft design, construction support during excavation and primary lining works.
Commencement - Services
January 01, 2009
Completion - Services
May 01, 2010
Location
Piccadilly
London
W1J 7BX
United Kingdom
Technical data

Provide Step Free Access between street level and Northern, Piccadilly & Jubilee line platforms via a new ticket hall and lift system. The station, with an estimated annual use of 25 million, will thus become accessible for passengers with disabilities and reduced mobility.

Geology description

London Clay formation

Geology types
Description

Green Park tube station is a LU station situated on the north side of Green Park in central London. The station serves as an interchange between the Piccadilly, Victoria and Jubilee lines. As part of Transport for London's (TfL) investment programme, LU is implementing capacity enhancement and step‐free access (SFA) works to various stations. Dr. Sauer & Partners was responsible for the design of the primary support, i.e. sprayed concrete lining (SCL) and for providing construction support services including supervision of the excavation works and installation of the primary lining.

Activity
Final cost
$9,000,000
Service areas
Geological Engineering, Tunnel Design & Specialities
Construction methods
Tunneling under
Max Overburden
10m
Proposed structures
Secondary lining works in the upper shaft
Project number
423
Final cost
£9 million GBP

Bond Street Station Upgrade Design

Service Performed
Design of the primary and secondary sprayed concrete linings, 3D FE modelling of all SCL tunnels including excavation steps and ground movement assessments.
Commencement - Services
January 01, 2011
Completion - Services
January 01, 2013
Location
Oxford Street
London
W1C 2HU
United Kingdom
Geology description

The tunnel horizon is generally within the London Clay formation with the lowest tunnels sitting in the Lambeth Group, where clay layers and water bearing clayey sands are inter-changing.

Geology types
Description

Bond Street tube station is a major gateway to London's West End served by both the Central and Jubilee lines. As part of the LU tube upgrade plan, the station is undergoing a major upgrade to increase capacity, improve accessibility and create interchange with the new Crossrail station. The project provides two additional escalators from the interchange level to the Jubilee line, low-level interchange route between the Central and Jubilee lines, a new step-free entrance, ticket hall and new lifts. The majority of the tunnelling works will be mechanically excavated and lined with sprayed concrete.

Activity
Final cost
$150,000,000
Service areas
Tunnel Design & Specialities, Waterproofing & Water Control
Construction methods
Tunneling under
Max Excavation Area (m2)
15-90m2
Tunnel length
370m
3D view of proposed tunnelling and existing infrastructure
Connection chamber one
Graphic  showing split of 3D FE models
3D Graphic showing construction site and building frame used for laydown/plant
Northern Tunnels in relation to Jubilee Line platforms and Post Office Tunnel
Binocular Tunnel at Jubilee Platform level
Project number
419D1
Final cost
£150 million GBP

Tottenham Court Road Station Upgrade Design

Client
Service Performed
Design of numerous temporary sprayed concrete lined shaft and tunnel structures, and the waterproofing system for the upgrade of the existing London Underground Tottenham Court Road Station.
Commencement - Services
August 01, 2007
Completion - Services
January 01, 2010
Location
Oxford Street
London
London
W1D 1AN
United Kingdom
Technical data

Tottenham Court Road Station is a London Underground station situated in central London. The station serves as an interchange between the Central and Northern lines. Over 150,000 passengers use the station daily.

Geology description

London Clay Formation (over-consolidated, very stiff to hard clay)

Geology types
Description

Currently over 150,000 passengers use the station daily and with the completion of Crossrail in 2017, passenger numbers are expected to increase to over 200,000. The tunnels are of diameters between 4.0m and 11.0m and typically consist of a temporary sprayed concrete primary lining, a spray applied waterproofing membrane and a cast-in-place concrete secondary lining. Multiple transitions and interfaces to existing LU structures make for a challenging design and construction project under the busy streets of central London.

Activity
Final cost
$480,000,000
Service areas
Construction methods
Special Construction techniques
Tunneling under
Max Excavation Area (m2)
23-104m2
Tunnel length
13-104m
Overview of new tunnel works
General arrangement of sprayed concrete overbridge
Northern line concourse tunnel with cross passages
Installation of steel transfer beam
Excavation and support of Northern line concourse tunnel
Removal of existing backfilled structure
Project number
411D
Final cost
£480 million GBP

Crossrail Eastern Running Tunnels

Service Performed
Shaft and tunnel design, engineering support, geotechnical engineering and site supervision services.
Commencement - Services
February 01, 2011
Completion - Services
December 01, 2012
Location
London
London
EC1M 6BY
United Kingdom
Geology description

Geological locations of the cross passages vary from London Clay to Lambeth Group and Thanet Sands.

Geology types
Description

Contract C305 is the biggest design-bid-build construction contract of the Crossrail (CRL) project and includes the eastern running tunnels of CRL's central section with launch shafts and SCL launch adits for TBMs at Limmo Peninsula, SCL caverns and launch adits for TBMs at Stepney Green and 10 SCL cross passages between the running tunnels with lengths up to 30m. At the Limmo Peninsula site a 40m deep and 30m diameter SCL shaft was built. At the shaft bottom in Stepney Green, two 30m long and up to 10m wide SCL launch adits were constructed followed by two 14m high and up to 18m wide, SCL caverns with single sidedrift and double sidedrift cross sections.

Activity
Service areas
Construction methods
Max Excavation Area (m2)
50-130m2
Tunnel length
15m
Limmo Main Shaft
Limmo Auxiliary Shaft bottom
Platform Tunnel West - Excavation - TBM Tunnel Enlargement
3D Model Limmo Auxiliary Shaft
Limmo Shafts and Tunnel layout - left Auxiliary Shaft - right Main Shaft
Project number
222E3
Final cost
£500 million GBP

Crossrail Farringdon Station Design

Service Performed
Design of the primary sprayed concrete linings and excavation stability including depressurisation/dewatering. 3D FE modelling of all SCL tunnels including excavation steps.
Commencement - Services
April 01, 2012
Completion - Services
October 01, 2015
Location
39 Cowcross Street
London
London
EC1M 6BY
United Kingdom
Technical data

The BFK joint venture was awarded the constrction contract for Farringdon Crossrail station in 2011. BFK appointed Dr. Sauer & Partners as consultants for all sprayed concrete lining (SCL) tunnelling works prior to ring closure. 

Geology description

From the ground surface to the bedrock the geology comprised made ground, river terrace deposits, followed by London Clay, Lambeth Group formation, Thanet Sands and chalk.

Geology types
Description

Farringdon station is situated at the heart of London's rail network and will be one of its major rail interchange stations, which will link Crossrail, Thameslink services and London Underground trains. The station layout includes two ticket halls, two escalator inclines, two platform tunnels, connecting cross passages, concourse tunnels and ventilation adits. The chosen tunnelling system for Farringdon Station was sprayed concrete lining (SCL). The station comprised a total of 1km of SCL tunnels at depths of up to 35m below ground level and excavation cross-sections varying from 25m2 to 110m2.

Activity
Final cost
$400,000,000
Service areas
Tunnel Design & Specialities, Waterproofing & Water Control
Construction methods
Tunneling under
Max Excavation Area (m2)
25-110m2
Tunnel length
1000m
General view of the Crossrail route with focus on Farringdon Station
Western ticket hall and SCL tunnels
CP1 (left), CP1-CH1 connection adit (centre) and PL2RC (right)
Plan view of the station showing the projection of the Faults at tunnel axis level and the Sand lenses
Probing in CP1
Cycle of risk reduction through the implementation of geotechnical risk management tools
Project number
222D5
Final cost
£400 million GBP

Bank Station Capacity Upgrade - Design

Service Performed
Design of tunnels and shafts (primary lining, waterproofing, secondary lining). SCL, squareworks and connections to existing assets.
Commencement - Services
August 01, 2013
Completion - Services
May 01, 2022
Location
London
London
EC3V 3LA
United Kingdom
Technical data

An important transport hub on the London Underground network, Bank Station forms an interchange between five lines. The Capacity Upgrade project comprises the construction of a new platform tunnel, associated running tunnel and step-free access provision.

Geology description

The geology is expected to comprise London Clay formation overlain by Quaternary superficial deposits comprising river terrace deposits and alluvium which are generally overlain by made ground.

Geology types
Description

Bank Station is a London Underground station located in the City of London financial district. It is a key interchange served by five lines. The Bank Station Capacity Upgrade (BSCU) aims to relieve heavy passenger congestion during peak hours for boarding, alighting and interchange. The capacity upgrade comprises the construction of a new southbound platform tunnel and associated length of running tunnel for the Northern line, connecting passageways to the existing station tunnels, and the provision of step-free access from King William Street. The total length of tunnels is 1,300m with tunnel cross sections that range from 10m2 up to 90m2.

Activity
Service areas
Tunnel Design & Specialities
Construction methods
Tunneling under
BSCU project overview
3D render of existing and new structures
2D Phase 2 analysis for a situation where new tunnels are above the existing assets
King William Street station entrance
Location/Footprint of the proposed 3D FE models.
3D pdf cut for escalator 4, including new and existing assets upon completion
Project number
451D
Final cost
£563.8 million GBP
Completion date
Ongoing

Erbach Diversion Tunnel

Service Performed
Design of Permanent Cast In-situ and Shotcrete Tunnel Lining for Sewerage Scheme
Commencement - Services
December 30, 1994
Completion - Services
December 30, 1995
Location
Stuttgart , Baden-Württemberg
Germany
Technical data

Length: 825 m, diamter: approx. 3 m, intake cavern: 6 m.

Geology description

Fill, industrial waste material, Limestone, contaminated groundwater.

Categories
Service areas
Tunnel Design & Specialities

Subway Lot 38 - Frankfurt/Main

Service Performed
Technical Consultant for Design, Supervision of Construction and Arbitrator
Commencement - Services
October 01, 1981
Completion - Services
June 01, 1984
Location
Frankfurt/Main , Hesse
Germany
Technical data

2 single track subway tubes, one turning upon the other,length: 2 x 415 m.

Geology description

Frankfurt Clay (clay and sand), waterbearing.

Description

Two single track subway tubes, one durning upon the other, L= 2*415m Monitoring for investigation.

Service areas
Tunnel Design & Specialities

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