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Investigation of the instalation process of a diaphragm wall trench
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Customer:
Institute of Geotechnical Engineering, University of Stuttgart
Subsoil:
Man-made fills, holocene clay- and peat layers as well as pleistocene sand and pleistocene layers of sand, loam, clay and peat.
Scope of work:
- Three-dimensional Finite Element analyses on the deformation during instalation of a diaphragm wall trench
- Investigation on the influence of different approaches for the fresh concrete pressure
- Comparative analyses on the stability of a diaphragm wall trench (two-dimensional (plane strain), axisymmetric and three-dimensional Finite Element analyses)
Used Finite Element Code:
PLAXIS 2D V8.4
PLAXIS 3D Foundations V2.1
Used constitutive laws:
Linear elasticity (generalized Hooke)
Hardening-Soil model (elasto-plastic)
Typical domain size:
| 2D model for Phi-c reduction: 40 m x 60 m 6,099 triangular elements with quadratic interpolation 12,376 nodes |
3D model for Phi-c reduction: 25 m x 30 m x 60 m 62,100 wedge elements with quadratic interpolation 164,500 nodes |
