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Author(s):	Scheller, Albert
Title:
Abstract:	In order to relieve the existing S-Bahn urban transit railway trunk line under the inner city of Munich, the construction of a second S-Bahn trunk line with a further inner-city tunnel is planned, which will also link the transport nodes at the Hauptbahnhof main station, at the Marienhof/Marienplatz and at the Ostbahnhof east station. The two-track line is about 10 km long, of which about 7 km will run in tunnels, and will mainly run in the Tertiary at a depth of about 40 m due to the existing dense building and underground transport routes that have to be crossed. The platform level of the three new stations will also be correspondingly 35 to 41 m deep. The high water pressures and the cross-sections of the station tunnels of up to 330 m2 pose particular challenges for the design and construction of the stations. The article provides an overview of the overall project and the special technical features of the tunnels. Zur Entlastung der bestehenden S-Bahn-Stammstrecke unter der Innenstadt von München ist der Bau einer 2. S-Bahn-Stammstrecke mit einem weiteren Innenstadttunnel geplant, die ebenfalls die Verkehrsknotenpunkte am Hauptbahnhof, am Marienhof/Marienplatz und am Ostbahnhof erschließen soll. Die rd. 10 km lange, zweigleisige Strecke, von der rd. 7 km im Tunnel liegen werden, wird aufgrund der bereits vorhandenen dichten Bebauung und der zu kreuzenden unterirdischen Verkehrsbauwerke überwiegend im Tertiär in einer Tiefe von rd. 40 m verlaufen. Entsprechend tief werden mit 35 bis 41 m auch die Bahnsteigebenen der drei neu zu erstellenden unterirdischen Haltepunkte liegen. Die hohen Wasserdrücke und die Querschnittsflächen der Bahnsteigröhren von bis zu 330 m2 stellen besondere Anforderungen an die Konstruktion und den Bau der Stationen. Nachfolgend wird ein Überblick über das Gesamtvorhaben und die tunnelbautechnischen Besonderheiten gegeben.
Source:	Geomechanics and Tunnelling 8 (2015), No. 2
Page/s:	115-128
Language of Publication:	English/German

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