Oslo, Norway

Follobanen

 
 
2014
START OF CONSTRUCTION TO COMMISSIONING
20km
TUNNEL LENGTH
2Mrd. EUR
OVERALL COSTS
250km/h
OPERATING SPEED

Norway is building its longest railway tunnel between Oslo Central Station and the city of Ski. This tunnel was conceived for a design speed of 250 km/h.

In order to drastically increase the capacity of the south corridor from Oslo, the Norwegian rail authority Bane NOR is building a 20 km long double-tube railway tunnel that will halve travel time between Oslo and Ski. Passenger and freight trains will travel with a speed of up to 250 km/h.

With rising train velocity, aerodynamic considerations become increasingly important. Amberg Engineering was responsible for the aerodynamic evaluation and optimisation of the planned tunnels. This concerns aerodynamic drag as well as aural passenger comfort and health. The so-called health criterion imposes an upper limit to pressure fluctuations originated by high-speed tunnel transit.

The challenge in this project stemmed from the heterogenous train park combined with several options for tunnel cross section. This resulted in numerous scenarios to be evaluated.

Amberg Engineering’s specialists could master this challenge and both comfort and health of passengers traveling on this line can be guaranteed.

Further services provided by Amberg Engineering include tunnel design, including the rescue station in the centre of the tunnel system, ventilation design and support to the development of the intervention strategy.

For more detailed information about this project:

Contact us

Picture Gallery

Tunnel during casting of track, Source: Bane NOR
Modern facilities at the new Ski Station West, Source: Bane NOR / Nicolas Tourrenc
Standard cross section of tunnel
Double Breakthrough south in February 2019, Source: Bane NOR
Amberg Group
100%
family-owned
7
companies
600+
employees

For around 60 years, the renowned Swiss Amberg Group has been a leader in engineering and surveying services for railway, metro, underground and specialised civil engineering. 

The family-owned company is an innovative knowledge, engineering and technology provider in the field of logistics and infrastructure for smart cities, hubs and networks. We provide outstanding solutions for our customers through innovatively combining above-ground and underground space utilisation.

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Amberg Engineering

Your underground experts 

  • Rail tunnels, including high-speed rail
  • Metro lines
  • Tunnel and shaft infrastructure
  • Caverns with large cross-sections
  • Energy storage and utilities 

Engineering at its best 

  • Numerous services for your entire project cycle, from feasibility, planning and construction to renewal of your infrastructure
  • Trained specialists and experts in planning and design, geotechnics, and project management
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Amberg Technologies

Infrastructure experts 

  • Rail, metro and tunnels
  • Underground spaces
  • Mining and shafts 

Systems and solutions 

  • Slab track, tamping, mapping, surveying and inspections
  • Tunnel machine guidance
  • Tunnel profile measurements and stakeout
  • Undulation
  • Layer thickness control
  • Surface inspection
  • Geological predicting during tunnel excavation
  • Surveying, data analysis and maintenance
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Amberg Infra 7D

Digital infrastructure experts 

  • Data acquisition and processing
  • Monitoring
  • Measurement of geotechnical tasks
  • Maintenance and operation
  • Process optimisation and digital continuity 

Solutions and services 

  • Geo-monitoring
  • Mobile mapping
  • Geomatics
  • Inspection services
  • Digital construction
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Amberg Loglay

Smart cities and construction logistics experts

  • Manage stakeholders across the value chain
  • Improve construction mobility in dense cities
  • Unlock up to 50% of the true potential of assets
  • Integrate circular economy principles into construction
  • Use smart data throughout the supply chain 

Solutions for construction sites 

  • End-to-end digital logistics processes
  • Rapid prototyping and smart sensors (IoT)
  • Logistics concept and manual (3D/4D)
  • Integration of logistics data
  • Logistics insights management (LIM)
  • Construction logistics management (CLM)
  • Management of external hubs and consolidation
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Amberg Infocon

Design and construction experts 

  • Design and BIM integration
  • Coordination between different disciplines
  • Information workflow setup
  • Facility management and BIM integration
  • Visualisation 

Services 

  • BIM implementation and creation of models
  • Clash detection, coordination and clash resolution
  • Construction documentation and shop drawings
  • 4D simulation and 5D estimation
  • Underground utilities
  • Laser scan to as-built models
  • IT solutions – BIM integration with FM application
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VersuchsStollen Hagerbach

VersuchsStollen Hagerbach - The underground future lab 

Recently named a research infrastructure of national importance, we have been providing the space and expertise to turn visions into innovations for over 50 years. 

Your analysis and testing requirements 

  • Real scale test and prototype environment
  • Analysis of construction material
  • Training facility
  • Unique location for your event 

Our facilities and services 

  • Various test sites, test procedures and management
  • Concrete and rock laboratory
  • Training environment and syllabus
  • Seminar rooms, event cavern and restaurant
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QAECY

AI agent as a service for the construction industry 

  • AI agent dedicated to the AEC industry
  • Easy access to complex project information
  • Helps in taking confident, informed decisions
  • Opens data silos, unlocks all content and uncovers context
  • Effortless interaction with your most valuable asset – your collective knowledge 

Solution and services 

  • AI agent as a service
  • Strategic consulting and training
  • Development of tailored solutions
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