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Foundations &
Soil-Structure-Interaction

Option F of CEDRUS


With the option F the soil-structure-interaction of a building can be analyized in order to design its foundation. For bottoms slabs raft, pile or piled raft foundations are supported. The input of the 3D ground model and the nonlinear calculation of settlements are made in LARIX. The final design of the slab is made with the building model of CEDRUS. Option F is based on option G and requires a license of option 3 of LARIX.

Analysis Model

  • Soil-structure-interaction: nonlinear, iterative solver for the calculation of slab displacements and corresponding soil settlements
  • Developed for practicing engineers (no expertise in nonlinear FE analysis required!)
  • Calculation of settlements with the 3D ground model of LARIX:
    Input of mechanical properties of the soil is reduced to one parameter (Modulus of subgrade reaction)
  • Calculation of the slab displacements according to the building model of CEDRUS
  • Nonlinear characteristic of pile specified with a load-settlement diagram
Slab with piled raft foundation

Foundations

  • Slab with raft foundation
  • Slab on piles
  • Slab with piled raft foundation
  • Support of multiple, interacting bottom slabs in a single building model
Foundation types of slabs

Loading

  • Vertical load of bottom slab taken from building model
  • Additional terrain load from single or distributed loads
  • Additional ground load from footings
Input of pile characteristic

Analysis Process

  • Modelling of building and definition of foundation slabs in CEDRUS
  • Calculation of foundation loading with the stacked slab model
  • Export of building data to LARIX
  • Input of 3D ground model and nonlinear calculation of settlements, bedding of slabs and piles in LARIX
  • Import of calculated slabs and piles from LARIX
  • Design of slabs in CEDRUS
Resulting settlements

Results

  • Slab bedding for given loads
  • RC design for bedded slabs
  • Design of piles and slabs against punching
  • Settlements of the building and surrounding terrain
Soil pressure and pile forces