You are here

Urban Rail/Bus Stations and Tunnels

University Link - Execution

Service Performed
Site supervision services, consulting and monitoring.
Commencement - Services
December 01, 2011
Completion - Services
August 01, 2012
Location
401 S. Jackson Street
Seattle, WA 98104
United States
Geology description

The geology along the alignment consists of over-consolidated glacial clay and till with fractured zones, as well as sand and silt layers.

Geology types
Description

University Link is a 5km light rail extension that runs in twin-bored tunnels from Downtown Seattle north to the University of Washington, with stations at Capitol Hill and on the University of Washington campus. The project further includes 20 cross passages located in soft ground and a maximum design water head of 60m. To deal with the prevailing geological conditions, specific ground support categories were developed. Steel fiber reinforced initial lining, sheet membrane waterproofing and CIP final lining were utilised.

Activity
Categories
Urban Rail/Bus Stations and Tunnels
Construction methods
Cross passage excavation
Propping of TBM tunnel at cross passage
Probe drilling at cross passage
Finished cross passage
Project number
262E
Final cost
$1.6 billion USD

University Link - Design

Service Performed
Sub-consultant for NATM/SEM design and waterproofing design.
Commencement - Services
July 02, 2007
Completion - Services
January 02, 2009
Location
401 S. Jackson Street
Seattle, WA 98104
United States
Geology description

The geology along the alignment consists of over-consolidated glacial clay and till with fractured zones, as well as sand and silt layers.

Geology types
Description

University Link is a 5km light rail extension that runs in twin-bored tunnels from Downtown Seattle north to the University of Washington, with stations at Capitol Hill and on the University of Washington campus. The twin-bored tunnels are connected with 20 cross passages. Dr. Sauer & Partners performed the temporary and final support design for the cross passages. This included the design of excavation and support measures and the development of specific ground support categories, settlement analyses, and the structural analyses of initial and permanent lining.

Activity
Categories
Urban Rail/Bus Stations and Tunnels
Construction methods
T Cross Passage
3D Finite Element Model
Project number
262D
Final cost
$1.6 billion USD

Crossrail C121 SCL Design CAT3 Check

Service Performed
Specialist sub-consultant for the analysis, design check, and design improvement recommendations of SCL structures.
Commencement - Services
January 01, 2011
Completion - Services
December 01, 2013
Location
25 Canada Square
London
E14 5LQ
United Kingdom
Geology description

The SCL tunnels are located in London Clay and Lambeth Group with overlying strata of terrace gravels and made ground.

Geology types
Description

Crossrail is a 118km railway line along an east-west route across London. Its central section runs via 21km twin-bore tunnels connecting eight underground stations and represents one of the world's largest infrastructure projects. Dr. Sauer & Partners was assigned to provide Category III independent design checking services on the Sprayed Concrete Lining works for the complete Whitechapel and Fisher Street SCL structures. Additional 3D non-linear FEA and assessments were carried out for the wraparound and junction structures of the Liverpool St Station and the Bond St Station.

Activity
Categories
Urban Rail/Bus Stations and Tunnels
Construction methods
Tunneling under
FEM results of binocular structure at Fisher Street Crossover
Fisher Street Crossover under construction
Project number
222C2
Final cost
£16 billion GBP

Tel Aviv Metro - Red Line

Service Performed
Dr. Sauer & Partners provides services as Checking Engineer for the design of all underground tunnels (NATM & TBM) and Cut and Cover structures.
Commencement - Services
April 01, 2011
Location
26 Harokmin St.
Tel Aviv
Israel
Geology description

The geology comprises predominantly sand and cemented dune sands called Kurkar, but also clay.

Geology types
Description

The Red Line will link the most congested areas of the city of Tel Aviv, operating along 24km and serving 34 stations. The light rail trains will run above ground as well as through a tunnel section of 11km length, connecting ten underground stations. Excavation of the twin tube tunnels will be undertaken by TBMs. The tunnels will be connected by cross passages spaced at a maximum distance of 250m. Station boxes will be constructed using diaphragm walls and piles. The Red Line should start its operation by 2021 and transport 70 million passengers per year.

Activity
Categories
Urban Rail/Bus Stations and Tunnels
Final cost
$300,000,000
Construction methods
Tunneling under
Route map (www.nta.co.il/en/line/73)
Galei Gil Shaft to be used to launch TBMs
Project number
362C1
Final cost
$3 billion USD
Completion date
Ongoing

Edmonton Light Rail

Client
Service Performed
Dr. Sauer and Partners provided construction support services and supervision of the excavation of the Light Rail Tunnels, which were constructed using NATM.
Commencement - Services
August 01, 2011
Completion - Services
January 01, 2013
Location
1 Sir Winston Churchill Sq NW
Edmonton, AB T5J 2R7
Canada
Geology description

Glacially controlled terrain comprising clay, silt and sand deposits underlain by Mesozoic bedrock consisting of sandstone and shale.

Geology types
Description

The City of Edmonton built a 3.3km Light Rail Train extension from Churchill Station to the Northern Alberta Institute of Technology. Approximately 670m of the extension are underground consisting of ca. 430m of twin tunnels of 6m nominal diameter. NATM/SEM tunneling was applied. The software 2DOC, which was at that point used in North America for the first time, allowed real-time tracking of all geotechnical instruments on the project, as well as the recording of the actual geotechnical conditions and the grout support elements installed.

Activity
Categories
Urban Rail/Bus Stations and Tunnels
Final cost
$300,000,000
Construction methods
Tunneling under
Excavation under way
Tunnel face
Project number
437E
Final cost
$300 million CAD

Silverline Phase III

Service Performed
Sub-consultant for NATM design.
Commencement - Services
January 01, 2003
Completion - Services
January 01, 2008
Location
500 Arborway
Boston, MA 02130
United States
Geology description

Made ground, peat, glacial till (cohesive, plastic), Boston Blue Clay and sand.

Geology types
Description

Silver Line Phase III is an underground extension of the Silver Line from the current terminal at South Station into Downtown Boston. The tunnels through Boston's Chinatown lie up to 25m below surface and include ca. 1400m long-running tunnels, two stations and complex underground junctions. The NATM design alternatives for LRT / Busway tunnels are located beneath existing subway stations and running tunnels. 3D modelling tools were utilised to create multiple alignments.

Activity
Categories
Urban Rail/Bus Stations and Tunnels
Final cost
$550,000,000
Construction methods
Tunneling under
3D rendering of the Silverline Phase III alignment
NATM alternative beneath MTA's Chinatown Station
Project number
347D1
Final cost
$550 million USD

Central Subway

Service Performed
Preliminary and final SEM tunnel design at Chinatown Station.
Commencement - Services
March 01, 2010
Completion - Services
May 01, 2012
Location
425 Market Street Suite 1700
San Francisco, CA 94105
United States
Geology description

The geology ranges from soft clay (Bay Clay) to stiff sands (Colma Sands) and competent to highly fractured rock (Franciscan Formation). A considerable part of the tunnel alignment is below the groundwater table.

Description

MUNI planned a 2.7 km underground extension to the Third Street Light Rail Project. The underground section would start near Bryant Street, run along Third Street, cross under four BART Tunnels at Market Street and continue under Geary and Stockton Streets to Clay Street. Dr.Sauer and Partners was the designer for the SEM Tunnel Structures at Chinatown Station and prepared detailed excavation and support sequences as well as procedures for the construction of the large caverns and final design documents for SEM construction.

Activity
Categories
Urban Rail/Bus Stations and Tunnels
Tunneling under
Route map
Overall station layout, headhouse and caverns (Rendering by JV)
Project number
358D1
Final cost
$1.6 billion USD

Exchange Place Station - Path Line Improvements

Service Performed
Tunnel excavation geometries, lattice girder geometries and layout.
Commencement - Services
October 01, 2002
Completion - Services
October 01, 2003
Location
225 Park Ave S
New York, NY 10003
United States
Geology description

Heavy foliated gneiss, schist, schistose gneiss with pegmatite intrusions occasional amphibolite; transitional (slope/rise) rock.

Geology types
Description

Exchange Place is a key station on the PATH commuter rail service between New York and New Jersey. After the World Trade Center collapse, the station and river crossing running tunnels were closed. Precautions were taken to prevent flooding of the subway system from broken water mains and sewer lines. Turning existing elements into a terminus and extending the platform tunnels by 45m involved excavating new crossovers, modifying the 5 existing tunnels, raising the invert and crown up to 3m and back filling unneeded tunnel spaces to create the ground in which new spaces could be excavated.

Activity
Categories
Urban Rail/Bus Stations and Tunnels
Final cost
$25,000,000
Construction methods
3D Model of Exchange Place station
Lattice girder and shotcrete for support
Project number
355D
Final cost
$25 million USD

Holborn Station Capacity Upgrade

Client
Service Performed
Feasibility study and conceptual design.
Commencement - Services
April 01, 2014
Location
Kingsway
London
WC2B 6AA
United Kingdom
Geology description

London Clay and Lambeth Group formation, which may contain water-bearing sand channels.

Geology types
Description

Holborn is a LU station in central London. It is served by the Central and Piccadilly lines. Demand for both lines at Holborn is high. The principal design challenges are the close proximity of the proposed tunnels to existing operational tunnels, complex tunnel geometry and alignments, limited clearance to existing buildings, restricted work sites and strict settlement criteria. The lining system is a double shell lining with both linings considered part of the permanent load bearing structure.

Activity
Categories
Urban Rail/Bus Stations and Tunnels
Final cost
$150,000,000
Construction methods
Tunneling under
3D visualisation of existing Holborn underground station
Archive photo of heading of escalator tunnel (1931)
Project number
471C
Final cost
£150 million GBP
Completion date
Ongoing

Crossrail 2

Client
Service Performed
Provide SCL project services, supporting main tunnel-stations-alignment workstreams, design of tunnel cross sections, SCL design principles, geotechnical review and risk assessment.
Commencement - Services
January 01, 2015
Location
22 Carlisle Place
London
SW1P1JA
United Kingdom
Geology description

The geology is expected to be highly variable crossing most of the typical units of the London basin (river terrace deposits, London Clay, Lambeth Group, Thanet Sand).

Geology types
Description

Crossrail 2 is a proposed new rail infrastructure project, aiming to alleviate further crowding and congestion across London. The proposed central route will provide a link between Wimbledon in the South and New Southgate and Tottenham Hale in the North with a provision for an Eastern branch towards Hackney Central. It will provide interchange with multiple London underground, London Overground, Crossrail 1, national and international rail services. It is expected to increase significantly the capacity of the regional rail network and reduce the journey times supporting the population growth of the City of London.

Activity
Categories
Urban Rail/Bus Stations and Tunnels
Construction methods
Tunneling under
Proposed route according to public consultation autumn 2015
Crossrail 2 in numbers (www.crossrail2.co.uk)
Project number
476C
Final cost
£30 billion GBP
Completion date
Ongoing

Pages