Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg
Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg
Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg
Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg
Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg
Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg
Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg Obre Biel, Matterhorn Gotthard Bahn 2016 - Geobrugg

Obre Biel, Matterhorn Gotthard Bahn

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Place
Zermatt
Country/Region
Switzerland
Year of installation
2016
Customer
Matterhorn Gotthard Bahn (MGB)
Engineering
geoformer igp AG (wasser/schnee/lawinen - André Burkard AG)
Contractor
ABA Bautec AG
Protected object
Railway
Systems
Multi hazard barrier
Energy absorption capacity
1000 kJ
System height
5.0 m
System length
28 m - 112 m
Corrosion protection
Galvanized, GEOBRUGG SUPERCOATING®
Situation

The railway line Matterhorn Gotthard has a section called Obre-Biel that is being used by as many as  ten passanger trains per hour, along with cargo trains. Over the years, this section of the railway has been inundated by snow slides and smaller avalanches. Consequently, railway traffic has been severly impaired and has also created the danger of possible trail derailment. The line was also endangered by rockfalls.

 

 

Description

The soution shall protect the railway line against snow slides, snow avalanches and rockfalls. Choosing flexible rockfall barriers willl decrease the amount of traffic disturbances.

Standard rockfall barriers are designed to deal with loads caused by rockfalls. So, to serve as a mutli-hazard protection system, some special dimensioning has to be implemented.

Such special dimensioning is not possible without involving computer simulations. For this purpose, Geobrugg uses finite element simulation software called FARO. FARO was originally developed by the Swiss Federal Institute for Forest, Snow and Landscape Research, and WSL, in order to simulate rockfall barriers with ring nets.

Further software development financed by the Commision for Technology and Innovation CTI allowes surface load simulations caused by debris flows, shallow landslides and avalanches.

By using FARO software, a total of 182 meters of rockfall barriers were correctly dimensioned to protect the railway line. They were finally divided into three lines of 112, 42 and 28 meters.

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Head office and production
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Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
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