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Tunnel Feuerbach und Bad Cannstatt – spezielle Anforderungen bei innerstädtischer Lage und schwierigen geotechnischen Verhältnissen
Author(s) -
Lienhart Christoph,
Chiaverio Flavio,
Rauscher Wolfgang,
Kurtz Matthias
Publication year - 2019
Publication title -
geomechanics and tunnelling
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.317
H-Index - 18
eISSN - 1865-7389
pISSN - 1865-7362
DOI - 10.1002/geot.201900057
Subject(s) - anhydrite , serviceability (structure) , geology , geotechnical engineering , overburden , civil engineering , engineering geology , gypsum , mining engineering , engineering , seismology , paleontology , volcanism , tectonics
The Feuerbach and Bad Cannstatt Tunnels on the Stuttgart 21 project are two central elements of the future Stuttgart inner‐city rail node. Due to the central location in the middle of Stuttgart, there are particular requirements for construction operations and logistics. These effects are additionally reinforced by the very difficult geological and geotechnical conditions in the valley of Stuttgart: very changeable strengths of the prevailing formations of the gypsum Keuper, sometimes with shallow overburden with dense building and roads above. The tunnel also passes through sections with anhydrite content, which tends to swell on contact with water. In this paper, both the challenges of the inner‐city location are described and the methods and solutions used to counter an impairment of structural safety and serviceability in the anhydrite sections.