slide 1
Image Slide 2
Structures & Foundations
Image Slide 3
Soil & Rock Mechanics

Starting the 1st of January 2023, GeoDev will centralize all activities around ZSOIL : Research & Development, Customer Support, Training Courses and Sales.

Click here to learn more about GeoDev.


Online by Zoom and Live at HEIA-FR, Route des Arsenaux 41, 1700 Fribourg, room Ars3.383, Friday 30.8.2024 09.00 – 16.30

Organised by GeoDev Sàrl et ITEC-HEIA Fribourg

Also celebrating 39 years of ZSOIL

Registration is open now: Registration form


Numerical simulation in geomechanics, constitutive aspects, soil-structure interaction and associated structural analysis with emphasis on present and future engineering practice: theory, applications, case studies, failure analyses, optimisation, probabilistic approaches.


The symposium combines invited presentations, and contributions by ZSOIL users and others. It has been taking place every year in late summer over the past twenty years, at the Swiss Federal Institute of Technology, in Lausanne and newly at Haute Ecole d’Ingénierie et d’Architecture de Fribourg.



5’ S. Commend (GeoDev). Welcome address

20’ G.W. Byun (EG Soft): Consolidation analysis for new off-shore airport construction in South Korea

20’ Yi Zhang (Eiffage), S. Commend (GeoMod). Probabilistic approach – application to the interaction between TBM and piles in the L16-1 project

20’ M. Borgers (Illwerke). Tunnel cross passage joint block in anhydrite containing rock

20’ A. Poisel (IGT). Pre- and post- processing tools using Rhino and Python


10h45-11h00: coffee break



20’ R. Obrzud, K. Dziedzic (GeoDev). Towards integrating a spatial analysis of geotechnical data into FE model creation

20’ M. Preisig (GeoMod). 3D model of a deep excavation in urban environment, prediction and measurements

20’ T. Kazerani (BG-WSP). On the use of heat exchangers

20’ M. Hohberg (IUB). Practical approach of rock softening in the context of squeezing rock in the Lötschberg Base tunnel


12h20-14h00: lunch break



20’ A. Truty (GeoDev). Introducing moving loads in ZSoil 2025

20’ C. Buchs, K. Podles, S. Commend (GeoDev). A new graphical user interface for probabilistic, sensitivity and reliability analysis within ZSoil 2025

20’ R. Maye, R. Obrzud (K+F). Examples of effective team-oriented workflow to tackle large scale simulations of soil-structure interaction projects developed in ZSoil

20’ M. Delage, G. Jacot-Descombes (GeoMod). Update on modeling wood joints and structures with ZSoil


15h20-15h35: coffee break



20’ Y. Ji (SGI). Analysis of the Influence of TOD (Transit-Oriented Development)Project on the Urban Railway Station under construction

20’ A. Truty (Krakow University), M. Cudny (Gdansk University). On the HS-model with small strain stiffness anisotropy

20’ S. Kivell. What's new within ZSoil 2025?


17h00-19h00: cocktail dinner



Engineers and developers confronted with the need to perform accurate numerical simulations or optimisations for complex underground, above ground or combined constructions have an opportunity to exchange experience, see state of the art presentations of recent case studies and get a comprehensive introduction to numerical simulations in 2D or 3D, with ZSOIL, in dry or partially saturated rock or soil, with full structural capabilities, soil-structure interaction, interfaces, thermal effects, ultimate load evaluation, continuous safety assessment, including creep, swelling, dilation, dynamics, uncertainty quantification with UQlab etc.


ZSOIL is a user-friendly 2D/3D finite element package for soil, rock and soil-structure analysis available and used worldwide since 1985, and continuously upgraded. The program was developed at Zace Services Ltd, by a team of engineers with research experience at the Swiss Federal Institute of Technology in Lausanne, UC Berkeley, California Institute of Technology, Purdue University, Cracow University of Technology, Stanford University and UC Davis . The aim is to provide civil engineers with a simple tool to accurately support geomechanical and structural engineering analysis, dimensioning and optimisation. Since ZSOIL first came out in 1985 it has steadily gained worldwide acceptance among practitioners as well as teachers and researchers. Today, upto ten free student versions are downloaded every day.


FEE: 200 CHF (free for speakers & HEIA Fribourg affiliates, 50% discount for ZSOIL owners, 10 CHF for students). Registration required.

Please prepay to GeoDev Sarl, Epinettes 32, 1007 Lausanne, Switzerland
Payment in CHF to : CREDIT SUISSE (Suisse) SA, CH-1001 Lausanne,
account n° 1294343-91, IBAN CH51 0483 5129 4343 9100 0, BIC/SWIFT CRESCHZZ80A

with mention “ZSOIL symposium”, and your name and affiliation



Scroll to Top