Design of retaining walls Continue reading

K-Rea checks the design of retaining walls using the subgrade reaction method: diaphragm walls, sheetpile walls, soldier pile walls, etc.

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  • ULS checks extended to double-wall projects (including Kranz check).
  • Direct processing without iterations of double-wall projects, without limitation of the number of linking anchors.
  • Automated processing of bank and berm effects using the kinematic approach with the yield design method.
  • Possibility to impose active and passive soil pressure diagrams and water pressure diagrams during the phasing.
  • Automatic correction of the inclination of counter passive earth pressure (LEM method)
  • Management of the initial phase:
    o    Possibility to consider a non-horizontal profile of the natural land.
    o    Define possible initial loads (eg: existing building nearby).
    o    Consideration of initial hydraulic gradient (eg: initial upward flow).
  • Possibility to consider a hydraulic gradient defined point by point through the water pressure or the hydraulic potential.
  • All loads can be changed or disabled during phasing.
  • Consideration of the screening effect of Boussinesq loads.
  • Automated processing of combinations of loads applied onto the wall and the soil.
  • Generalization of support conditions and anchoring.
  • New type of support: circular liernesurface support and surface linking support (slab type).
  • Preload can be defined for all supports.
  • Anchors’ preload can be modified during phasing.
  • Management of elastoplastic behaviour for all types of support.
  • Consideration of the earthquake: Mononobe-Okabé (pseudo-static method) and yield design method.
  • Consideration of the Eurocode 7 design approaches (1, 2 and 3).
  • Consideration of a minimum active earth pressure and a maximum passive earth pressure for every soil layer.
  • Taking into account the over-excavation (Δa) on either side of the wall.
  • New results available: axial force throughout the wall (Nz) and vault pressure (Nθ).

ELU options - Over-excavation

Results - Forces in anchors

Double-wall - Hydraulic gradient

Double-wall - Results synthesis ULS

Kranz results

Double-wall - Sismic calculation

ULS results - Decomposed water pressure - Forces in anchors

Wizard definition of loads cases(curves)

Title and Options - ILS checks : Approach 3 EC7

Wizard for definition of partial factors - Approach 2 (EC7 - NF P94-282) 

Graphical results - Vault pressure - Normal force 

Over-excavation right 

Over-excavation left - Bank 

Vertivcal equilibrium




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