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March 25, 2019

 Road tunnels and technology in an operational perspective
Arild Petter Sovik, Tunntech Global News

Several innovative businesses are working with new better materials to provide tunnel owners with construction elements that uses materials well suited for other more demanding industries. But are we ready to challenge the traditional materials?

An important part of upgrades and rehabilitation of tunnels is to protect side area that represent a risk for collisions. The new SMA crash cushions from Automation Manufacturing Services ltd. prove that it is possible to produce space-saving solutions that are easy to install, reliable over time, maintenance friendly and provide a high degree of safety. 

By adding thermography, thermal imaging, together with 3D laser scanning and visual imaging, it is possible to detect hidden damages beyond what can been seen from on site inspections. 

Experts from businesses and public bodies from all over the world use the well-known Hagerbach Test Gallery in Switzerland to perform research, development, testing and full-scale experiments. The VersuchsStollen Hagerbach AG facilitate cooperation between companies, associations and research institutes, to improve construction, operation and safety of tunnels with a professional approach.

13 - 15 June 2018, Luzern, Switzerland.                          


The Fehmarnbelt tunnel is set to become the world’s longest combined car and rail tunnel. There is still approvals missing before the project is finally approved by all authorities. The German government approval of the Fehmarnbelt link is expected by mid 2018 according to the Danish Ministry of Transport, Building and Housing. 

Photo: Arild P. Sovik (illustration)

Cavidrain® is a preformed geocomposite drainage system designed to relieve water penetration and reduce hydrostatic pressure within tunnel constructions.

Increased quality in order to extend the constructions lifetime to 100 years and thereby avoid renovations or new construction. This is one of the the arguments for using full cast vault in road tunnels.

The point cloud created by the laser scan is mainly used to evaluate the conditions of the pavement but can also be used to gather data from the side area and the tunnel walls. The report from such a scanning gives the necessary data for analysis and give the tunnel operator a chance to follow up the development of the road surface, the rock conditions and the construction, from one year to another. 

BIM helps you to anticipate issues, assess information, and act more confidently at each stage of your tunnel design project. Minimize rework and improve predictability for design and construction of complex structures as tunnels. If you can add scheduling data to your information model and to the different components, generating accurate programme information and enabling step-by-step visuals of the project’s development. This process is known as 4D BIM.

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