New Lifting for Tunnel Oberstaufen

Infrastructure

29.11.2017

Bigger, faster, safer.

Severe weathering, water ingress and frost damage in winter: After more than 160 years of operation, southern Bavaria's only railway tube, the Oberstaufen Tunnel, had to be completely renewed. In the 1980s, rehabilitation with shotcrete was to stop the impending decay. But the ravages of time continued to gnaw on the building. Now the tunnel builders of the Max Bögl Group gave the ailing patient a modern fresh cell cure.

Built on behalf of King Ludwig II in 1853, it is still the only tunnel on the Munich-Lindau double-track railway line. However, due to water penetration and severe frost, icicles were repeatedly formed on the inner walls and on the tracks during the winter months, hindering rail traffic. In addition, the cross-section of the once 123 metre long tube was so narrow that trains could only travel slowly on the two closely adjacent tracks - at the end of the day at a maximum speed of 30 km/h. The railways were not able to travel at all.

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Massive conversion for more comfort

To ensure that double-decker trains and trains with tilting technology will also be able to pass through safely in future, Deutsche Bahn decided in 2016 to carry out a fundamental conversion and comprehensive renovation of the tunnel. The cross-section was increased to 70 square metres, a new reinforced concrete inner shell was installed and retaining walls were installed at the portals, which extend the existing tunnel at both ends by 16 and 20 metres respectively. In connection with the tunnel project, Deutsche Bahn also had 9.5 kilometres of track between Immenstadt and Oberstaufen renewed, a new bridge and several culverts built, four points installed in Oberstaufen station and the signalling technology adapted.

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Blasting through the mountain

The construction work began in April 2016, when Max Bögl's tunnel construction specialists used 3.5 tonnes of explosives to extend the tunnel by around 1.50 metres around its circumference, so that the distance between the tracks could be increased from 3.50 to 4.00 metres. In the course of the blasting operation, over 15,000 tonnes of rock had to be excavated and removed. Then the new pipe was lined with a waterproof reinforced concrete inner shell with a vaulted base. In addition to the widening, Deutsche Bahn had the railway tunnel extended to a total length of around 160 metres. This tunnel extension in conjunction with new retaining walls now provides sufficient protection against rockfall instead of the old tunnel portals. The line was opened to rail traffic at the end of 2016. Since then, the trains have been travelling through the new tunnel at a speed of 80 km/h. The new tunnel has been opened for traffic at the end of 2016.

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Diese Voraussetzungen sind beispielsweise:

Anforderungen an Gründung, Gruben und Einbauten für die Anlagen des Kunden
Anforderungen an Böden hinsichtlich Ebenheit sowie mechanische und chemische Belastbarkeit
Anforderungen an Ver- und Entsorgungsanlagen
Lieferung von Betriebsmitteln, z. B. Krananlagen für die Fertigung
Arbeitsstättenrichtlinien
Konditionierung des Raumklimas
Erweiterungsfähigkeit der Produktionsanlagen

Mit den Hallensystemen Bögl schaffen wir die optimalen Rahmenbedingungen für die Wünsche unserer Kunden und legen den Fokus dabei vor allem auf die ordnungsgemäße Einbindung der technischen Anlagen. Besondere Anforderungen an Statik, Geometrie und verschiedene Einbauten in Böden, Gruben oder in die Fertigteilkonstruktionen können bedarfsorientiert realisiert werden.

Zugehörige Betriebsgebäude werden von uns in die Gesamtplanung integriert und Schnittstellen zu weiteren Baudienstleistern vermieden. Mit unserer hohen Wertschöpfungstiefe können wir alle Leistungen aus einer Hand anbieten. Bis zum Anschluss der Anlagentechnik liefern wir eine Gesamtlösung für die Bauprojekte unserer Kunden.