• Design Considerations
  • Stress release (loading/unloading)
  • Water surface (seepage force)
  • Heaving or boiling
  • Reinforcements
  • Excavation steps with time
  • Adjacent structures
  • Solution
  • Deep excavation projects often require an analysis that accounts for the changes of the project site over each stage of the excavation. GTS NX enables you to analyze each stage of the excavation sequence along with the permanent and temporary structures that are to be constructed during each respective phase.

    A key advantage of the program is its ability to calculate highly accurate bending moments and deflections of retaining elements. You can use these high quality results to optimize your design while fully accounting for the maximum allowable bending moments and deflections of your retaining walls.

    GTS NX is equipped with advanced modeling and post processing features that have been designed to simplify and streamline the once time consuming and complex process of performing finite element analysis for excavation. Thus you can obtain in depth results with a minimal investment of time and effort.
Major Related Analyses
  • Construction stage analysis can be used to simulate the construction process of the ground using numerical analysis. Construction stage analysis consists of multiple stages and loading/ boundary conditions, as well as elements, can be added or removed at each stage. This loading/ boundary or element change is applied at the start of each stage. GTS NX can use following types of analysis features to conduct Construction stage analysis.

    Stress-Slope Analysis
    Analysis of stress and slope stability during the construction process

    Seepage Analysis
    Stage by stage Steady state seepage analysis, Stage by stage Transient seepage analysis

    Stress-Seepage-Slope coupled analysis
    Sequential Seepage-stress analysis and Slope stability analysis during the construction process

    Consolidation analysis
    Consolidation analysis for environment change and construction process of embankment

    Fully-coupled Stress-Seepage analysis
    Stress analysis fully coupled with Transient seepage phenomenon

    When conducting Construction stage analysis, the following should be considered.
  • Addition/Removal of element
  • Loading/Unloading of weight
  • Change in boundary condition
  • Change in rock material property
  • Definition of load distribution factor
  • Step by step underground water level
  • Drained-Undrained analysis
  • Initialization of displacement
  • Stress Analysis for initial construction stage (Consider Ko condition)
  • Restart