Abstract
This paper discusses the numerical analysis of a specific part of the deep seated Gotthard Base Tunnel. A section of the western tube situated in the Clavaniev Zone was simulated with the finite element programme ABAQUS. Geological and geotechnical documentation from the design stage and the construction stage as well as daily and monthly reports of the construction site were provided by AlpTransit Gotthard Ltd. This documentation has been used to perform 3-dimensional analyses with implementation of support elements in a realistic construction sequence. For the simulations different constitutive laws were used. The aim of this research project was to investigate whether measurements of radial deformations and the core extrusion in front of the face can be matched with the results of 3-dimensional FE simulations based on information available during the design and the construction stage.
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