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Author(s):	Nikolic, Alex; Cook, Jim
Title:
Abstract:	The paper describes some of the challenging geotechnical issues related to the redevelopment of a central London site in Tottenham Court Road. The London Underground station is being upgraded, and proposed tunnels of the Crossrail project and the Denmark Place project also have to be accommodated, which led to significant difficulties due to spatial restraints underground. Innovative solutions have been adopted for the design and installation of some of the piles together with an unprecedented low clearance between piles and a running tunnel of the Northern Line and the proposed Crossrail tunnel respectively. For one pile, a D-shaped section had to be chosen due to space limitations in the ground. Dieser Beitrag beschreibt einige der geotechnischen Herausforderungen bei der Neugestaltung eines zentralen Stadtteils von London, der Tottenham Court Road. Aufgrund der Tatsache, dass neben dem Ausbau der bestehenden U-Bahnstation ein geplanter Crossrail-Tunnel sowie das Projekt Denmark Place in diesem Areal errichtet werden, entstehen erhebliche Schwierigkeiten durch die sehr beengten Platzverhältnissen im Untergrund. Innovative Lösungen in Planung und Herstellung der Pfähle waren erforderlich, wobei ein noch nie dagewesener geringer Abstand zwischen Pfahl und Northern Line Tunnel bzw. dem geplanten Crossrail Tunnel genehmigt wurde. Für einen Pfahl musste aus Platzgründen ein D-förmiger Querschnitt gewählt werden.
Source:	Geomechanics and Tunnelling 6 (2013), No. 5
Page/s:	479-486
Language of Publication:	English/German

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