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Author(s):	Burger, Daniela; Haunschmid, Bruno
Title:
Abstract:	Ever since being built in the middle ages, the Gerlos Strasse has been affected by slope sides and wild torrents, resulting in an almost continuous history of rebuilding and repairs with correspondingly high costs. The route is in the immediate vicinity of the Salzach Fault, one of the most significant fault zones on the eastern Alps, and the enormous forces that formed the mountains can be seen in action, together with the destructive erosion processes with their natural tendency to reduce the angle of the slope. Three individual events are described in order to illustrate the heterogeneous geological conditions, and the selected repair and protection measures for the infrastructure are briefly described. It appears that even with the geotechnical measures available today, an end to the permanent cycle of repair is still barely conceivable. Seit ihrer Entstehung im späten Mittelalter ist die Gerlos Straße von Rutschungen und Murenabgängen betroffen, die einen nahezu ununterbrochenen Wiederherstellungs- und Sanierungsbedarf mit entsprechend hohem finanziellen Aufwand nach sich ziehen. Ihr Verlauf im unmittelbaren Nahebereich der Salzachstörung als einer der bedeutendsten Störungszonen der Ostalpen lässt die enormen gebirgsbildenden Kräfte wie auch die zerstörerischen Erosionsprozesse mit ihrer natürlichen Tendenz zur Verringerung der Hangneigungen eindrucksvoll vor Augen treten. Anhand dreier Einzelereignisse werden die heterogenen Untergrundverhältnisse dargestellt und die gewählten Sanierungs- und Sicherungsmaßnahmen für die Infrastruktureinrichtungen skizziert. Es zeigt sich, dass auch mit den heute zur Verfügung stehenden geotechnischen Mitteln ein Ende der Dauersanierungsmaßnahmen nur schwer absehbar ist.
Source:	Geomechanics and Tunnelling 7 (2014), No. 3
Page/s:	272-285
Language of Publication:	English/German

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