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Piled raft foundation of a power plant in Karlsruhe
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Project:
Construction of a power plant, Karlsruhe, Germany
Customer:
Smoltczyk & Partner GmbH, Stuttgart
Project description:
The performance of a raft and a piled raft for a new power plant close to the river Rhein in Karlsruhe had to be investigated.
Subsoil:
Mainly gravel and sand interbedded with cohesive layers.
Scope of work:
- Simulation of bored piles with base and shaft grouting.
- Investigation on the influence of dilatancy on the bearing behaviour of the piles underneath the raft
- Three-dimensional Finite Element analyses of a section through the power and boiler house
- Investigated alternatives for the piled raft:
- Variation of pile layout
- Variation of pile length
- Variation of distance of the rafts
Used Finite Element Codes:
PLAXIS 2D V8.6
PLAXIS 3D Foundations V2.1
Used constitutive laws:
Linear elasticity (generalized Hooke)
Hardening-Soil model (elasto-plastic) + Small-Strain-Stiffness
Typical domain size:
222.5 m x 14.5 m x 43.0 m (58.0 m)
55,500 to 63,000 wedge elements with quadratic interpolation
170,700 to 186,000 nodes
