Stress-strain fields at the tunnelling face?Three-dimensional analysis for two-dimensional technical approach
| Autor: | H. Duddeck, S. Kielbassa |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Three dimensional analysis
Engineering business.industry Stress–strain curve Geology Structural engineering Geotechnical Engineering and Engineering Geology Finite element method Stress field Stress (mechanics) Rock mechanics Face (geometry) Geotechnical engineering business Quantum tunnelling Civil and Structural Engineering |
| Zdroj: | Rock Mechanics and Rock Engineering. 24:115-132 |
| ISSN: | 1434-453X 0723-2632 |
| Popis: | For tunnelling in rock, the original stress field in the ground is changed considerably before a first lining is participating in stabilizing the opening. Depending on this stress release at the tunnel face, only a small portion of the primary stresses is acting on the lining. Only a three-dimensional approach is able to determine the stresses and the deformations of the ground and the lining realistically. The paper presents some results of elastic three-dimensional finite-element-analyses in consecutive steps of the sectional excavation of circular and non-circular tunnels. From these results an equivalent two-dimensional approach is derived for technical applications, given in diagrams. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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