Workshop: PLAXIS 2D for Geotechnical Project in Urban Environment Part II: Deep excavation

Date 22/08/2017
Location New York City
Lectures Richard Witasse
Organizer Plaxis bv


This one-day workshop is tailored towards practitioners in the industry to provide a good understanding of Plaxis 2D for modelling Deep Excavations in Urban Environment. The main goal of this workshop is to teach the concepts and practical use of the most relevant PLAXIS  features for modelling Deep Excavations. For solving practical problems the PLAXIS 2D 2017 computer program will be used. It is recommended, though not required, that participants already have some basic experience with the PLAXIS 2D software.

During this day participants will become familiar with the different options that PLAXIS offers for modelling deep excavations. The participants will get acquainted with the use of PLAXIS 2D by doing elaborated and well-documented hands-on exercises. During these exercises, individual assistance will be provided by experienced Plaxis tutors.


The workshop consists of one single day and will be held in English by a Senior Plaxis Engineer exclusively. The program format consists of three lectures and three exercises with full tutoring and discussion.


08:00-09:00 Practical use of PLAXIS 2D for modelling excavations

  • Best modelling practices
  • Modelling dewatering
  • Structural elements
  • Short-term vs long-term analysis

09:00-10:15 Case study 1a: Excavation near an existing tunnel

  • Construction of a subway interconnection passage
  • Effect on existing constructions: building and tunnels

10:15-10:30 Break
10:30-11:30 Advanced constitutive soil models in PLAXIS

  • The MC model
  • The HS and HSSmall models and parameters
  • Other models

11:30-12:45 Case study 1b: Excavation near an existing tunnel (cont)

  • Influence of material models
  • Alternative construction strategy

12:45-14:00 Lunch
14:00-14:45 Modelling Undrained behaviour in PLAXIS

  • Effective stress vs total stress approach
  • Undrained A-B-C
  • Advantages and limitations
  • Main undrained behaviour modelling pitfalls

14:45-15:00 Break
15:00-17:00 Case study: Deep excavation in Clay: Short Term Analysis and Interaction with neighbouring building

  • Forces in excavation wall
  • Ground deformation and effect on existing building
  • Proper evaluation of cu-profile based on effective stress strength parameters

17:00-17:30 Questions & Answers session

Course Venue

The course will be held at NYU Tandon School of Engineering in Brooklyn, New York City.

NYU Tandon School of Engineering
6 MetroTech Center
NY 11201


The total number of participants is limited to twenty-eight (28). Registration will be accepted in the order in which they will have been received. To register for the course, please complete the registration form and send it to the course organiser before August 15th 2017. For registration and cancellation of the course our Terms & Conditions apply.