
Online by Zoom and Live at HEIA-FR, Route des Arsenaux 41, 1700 Fribourg, room A3.383 (third floor), Friday 28.8.2026 09.00 – 16.30, followed by a cocktail dinner
Organised by GeoDev Sàrl and ITEC-HEIA Fribourg
Registration is open now: Registration form
SYMPOSIUM TOPICS
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.
SYMPOSIUM HISTORY
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.
SCHEDULE
9:00 – 10:30 chair M. Preisig
- 15’ S. Commend (GeoDev). Welcome address
- 25’ C. Berger (E+B). Weyermannshausviadukt excavation
- 25’ GW. Byun (EG Soft). Failure case of MSE wall without external drainage
- 25’ R. Obrzud, R. Maye (K-F). Challenges in modeling masonry structures with ZSoil
10:30 – 11:00 coffee break
11:00 – 12:15 chair S. Commend
- 25’ M. Hohberg (IUB). Stability analysis under seepage - an international benchmark
- 25’ K. Dziedzic, R. Obrzud (GeoDev). ZSgeosite features and capabilities - presentation of the β version
- 25’ A. Truty (GeoDev). New formulation for macro drains in ZSoil 2027
12:15 – 14:00 lunch break
14:00 – 15:15 chair S. Kivell
- 25' R. Maye, R. Obrzud (K-F). Digital twins of load tests for calibration of model parameters in ZSoil
- 25’ M. Groslambert (GeoMod), M. Dupays (DCG). Large scale geothermal project in Yverdon
- 25’ R. Hettelingh (GeoMod). Conservative ultimate limit load estimation of geotechnical systems using the finite element method
15:15 – 15:30 coffee break
15:30 – 16:30 chair A. Truty
- 25’ S. Commend, J. Minini (HEIA-FR), E. Prina (HEIG-VD). Probabilistic transient finite element digital twins for slope stability under heavy rainfalls
- 25’ R. Obrzud, R. Maye, M. Lanza (K-F). Design and monitoring of an unsymmetrical deep excavation based on ZSoil predictions
- 10’ S. Kivell (GeoDev). Update on ZSoil's developments and future
17:00 – 19:00 : cocktail dinner
WHO ATTENDS
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
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, up to ten free student versions are downloaded every day.
PAYMENT
FEE: 200 CHF (free for speakers & HEIA Fribourg affiliates, 50% discount for ZSOIL owners, 10 CHF for students). Registration required
Please prepay to :
HEIAG-FR, Pérolles 80, 1700 Fribourg, Switzerland
PostFinance SA, CH-3030 Bern
IBAN CH94 0900 0000 1700 0453 4
BIC/SWIFT POFICHBEXXX
with mention “AGP 142588”, and your name and affiliation
Organisers






