K-RÉA v6
Analysis of retaining walls
Diaphragm walls, secant or spaced pile walls, Berlin walls, sheet pile walls, combi walls, composite walls, etc.
K-Réa is a software programme that enables the analysis of all types of retaining walls using the reaction coefficient method and in accordance with Eurocode 7, taking into account soil-wall interaction effects, construction phasing, and the non-linear behaviour of soils and anchors.
Key strengths
- A user-friendly interface for viewing phasing and actions, with graphical and numerical access to the key results required for sizing
- Script mode allowing you to modify or fully define a K-Réa project using a series of commands
- Modelling of a phasing tree to handle complex phasing
- A reliable and robust calculation engine based on a finite element formulation of the static equilibrium of the screen
- Automatic seismic analysis taking into account dynamic increments in thrust and bearing
- Handling of second-order effects
- Ability to model a 2D (single or double screen) or 3D (multiple screens) retaining structure with a complex connection or anchoring system
- Displacements, moments, shear forces, normal forces, arch forces and anchorage reactions (for each phase and each screen)
- Soil and water pressures (thrust and bearing)
- Ratio of mobilisable bearing pressure to mobilised bearing pressure
- Window displaying the results of ELU checks (failure of the abutment, summary of vertical forces and Kranz)
- In 3D mode: access to stresses in tie rods, beams and connecting slabs
Modules
3D Module
This module enables the assessment of the three-dimensional effects of rectangular or arbitrarily shaped excavations, whether open or closed.
The module utilises the capabilities of a new calculation engine developed to handle the interaction between 3D structural elements and the surrounding soil, represented by a series of elastoplastic springs.
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In practical terms, this new 3D module allows you to analyse:
An assembly of retaining screens (
fixed
or hinged
connections) with anisotropic behaviour
; -
An anchoring system comprising struts or tie rods
oriented in any direction in space
; - The presence of tie rods and connecting slabs, which may
include hoppers; - A foundation slab interacting with the soil at the bottom of the excavation;
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The presence of localised loads on the ground or on part
of the retaining system.
Running the model provides access to the 3D deformation of the system as well as the internal stresses (bending moments, axial forces, shear forces) in each element: panels, slabs, struts, tie rods, tie beams, foundation slab, etc.
ELU checks
This module enables checks to be carried out in accordance with calculation methods 1, 2 and 3 of Eurocode 7, and in particular in accordance with standard NF P 94-282 (French standard implementing Eurocode 7 for retaining screens):
- MEL / MISS-K models with ELU force calculation;
- Verification of failure due to lack of support;
- Assessment of the vertical force balance;
- Verification of the stability of the anchorage mass using the Kranz model (planar or spiral arc mechanism), taking into account the interaction between anchorage elements;
- Option to modify predefined partial factors.
Key features
Script mode
K-Réa offers the option to use the interface via script mode, allowing you to modify or completely define a K-Réa project using a series of commands (actions, phasing, options, etc.).
The interface features an automatic script generation mode to make it easier to use and understand.
Parameters that have a default value in the interface are not mandatory, which reduces the amount of text to be entered to a minimum, whilst still allowing them to be set at any time.
Detailed instructions are provided within the interface to help users understand the grammar to be used.
Phasing tree
K-Réa offers the ability to model a phasing tree, enabling the handling of complex phasing schemes involving, for example, multiple loading conditions or construction scenarios.
This also allows you to compare several phasing variants within the same project and identify the most optimal one.
Interface with Talren
Talren can be used as a tool to generate thrust and/or bearing capacity diagrams in situations where standard thrust/bearing capacity tables are not directly applicable: complex stratigraphic profiles, specific hydraulic or seismic conditions, the presence of reinforcement elements in the ground, etc.
To this end, K-Réa includes a dedicated interface for the automatic import of these diagrams from Talren.
Footbridge with Scage
Following a K-Réa calculation, it is necessary to assess the structural strength of the screen. For reinforced concrete screens (diaphragm walls, secant or continuous piles), these structural checks are carried out using the Scage software developed by Terrasol.
K-Réa enables the automatic generation of a Scage project to formalise these checks.
Fancy giving it a go?
Get a free 30-day trial licence (non-renewable) allowing you to use all the software’s features, run all calculations and view the results.
Check out the terms and conditions to get it!
Useful links
Discover
Resources
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K-Réa v6.0.5
Minimum system requirements
PC-compatible computer with:
- Intel® Core Duo compatible processor
- 2 GB of RAM
- Minimum resolution of 1280×720
- USB port
- 500 MB of available disk space
- Windows® 10/11 (64-bit)
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