ZSoil Features


Nonlinear small and large displacements.  Axi-symmetric, Plane strain, and 3D drivers offering single and 2-phase  analyses, including partial saturation, with any combination of the following algorithmic options:

Automatic evaluation of initial stress conditions including steady state flow: combination of gravity and initial-stresses allows an automatic reproduction of the most complex initial state conditions, including existing constructions.

Stability analysis: through C-phi reduction and stress level algorithms lead to a reliable assessment of safety factors and failure surfaces for the most general problem geometries. Simpler and more general than usual sliding surface approaches.

Possibility to analyze safety with respect to local material properties or features like contact surfaces.

Ultimate load and deformation analysis.

Prestress conditions (anchors).

Simulation of Excavation, construction stages, simulation of  fill for cut and cover construction, combined with any sequence of drivers, allowing removal or addition of construction parts, loads, boundary  conditions etc, unloading control capability in order to simulate 3-dimensional effects in 2D. Continuous safety assessment.

Consolidation, volumetric and deviatoric creep and swelling (time dependent processes).

Flow, steady or transient, fully or partially saturated, with time dependent boundary conditions; fullly arbitrary flow conditions with free surface, seepage surfaces, as well as rain inflow, impermeable zones, coupled or uncoupled with solid deformation can easily be accounted for.

Thermal/or moisture migration analysis: Transient thermal/or moisture migration analysis can be performed as a preprocessing in order to define temperature time-histories to be accounted for later in the mechanical analysis.

Dynamic time integration and Pushover analysis for structures, including soil structure interaction

Skyline,  or  new sparse solvers,  tested up to over 1’500 000 DOFs for symmetric stiffness matrices and 1’000 000 DOFs for nonsymmetric ones

Constitutive models for continuum include: elastic, Drucker-Prager, Mohr-Coulomb, Hoek-Brown, Multilaminate, Modified Cam-Clay, HS_small strain, Cap model, Densification model, Menétrey-Willam, damage-plastic concrete model (with fire extension), and a Virtual geotechnical laboratory toolbox to assist users in data preparation.

ZSOIL uses exclusively linear elements, enhanced (BBAR, enhanced strains, stabilised formulation) to overcome locking phenomena. Finite elements include: truss, cable, beam, plate, shell, thick shell and continuum for single and 2-phase media.

Recent features
ZSwalls Diaphragm/sheet pile wall template on PC platform, also available as standalone software.  Watch ZSwalls tutorial on YouTube.
Export of results to Paraview for alternative viewing, Python scripting for reporting,
CAD assistance: Import data from Rhino (coming up).

Support and documentation
Hotline and an extensive online Help are available to users. A 200 pages Getting Started manual introduces the new user to all basic situations.
A number of case studies are discussed in papers selected from users meetings
ZSOIL in today’s projects, P. Jemec &al., Elea IC, with comparisons between PHASE2, PLAXIS 3D, SOFISTIK, & ZSOIL

ZSOIL is available under time unlimited, rental, single-user or network licenses. Academic discount applies. A free student version can be downloaded which includes all features, but with a reduced number of degrees-of-freedom.