Abstract
Numerical analyses are performed on a routine basis in practical geotechnical engineering to assess the deformation behaviour of tunnels - in particular, for near-surface tunnels - in soils where the influence on existing infrastructure (such as buildings, deep foundations and adjacent tunnels) has to be evaluated. In addition, it becomes increasingly common to use results from numerical analysis as basis for designing the support measures for the tunnel. When doing so, the strongly nonlinear material behaviour of shotcrete - namely, the increase of stiffness and strength with time - should be taken into account, in particular when the excavated cross-section is subdivided into several construction stages involving temporary shotcrete structures with high stress concentrations near corners. In this paper, a new constitutive model for shotcrete is applied in the numerical analysis of a complex underground railway station. It could be shown that significant differences in lining stresses are obtained when employing the newly developed constitutive model for shotcrete. However, the overall deformation behaviour is not significantly influenced by the shotcrete model.
Original language | English |
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Title of host publication | Tunneling and Underground Construction - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress |
Publisher | American Society of Civil Engineers |
Pages | 890-899 |
Number of pages | 10 |
Edition | 242 GSP |
ISBN (Print) | 9780784413449 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
Event | 2014 GeoShanghai International Congress: Tunneling and Underground Construction - Shanghai, China Duration: 26 May 2014 → 28 May 2014 |
Conference
Conference | 2014 GeoShanghai International Congress: Tunneling and Underground Construction |
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Country/Territory | China |
City | Shanghai |
Period | 26/05/14 → 28/05/14 |
ASJC Scopus subject areas
- Architecture
- Civil and Structural Engineering
- Building and Construction
- Geotechnical Engineering and Engineering Geology