Numerical and experimental investigation of failure of a DCM-wall considering softening behaviour

Siriwan Waichita, Pornkasem Jongpradist*, Helmut F. Schweiger

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The failure behaviour of a deep cement mixing (DCM) wall due to excavation on one side of the wall was studied by means of finite element analysis and a simplified small-scale test. The DCM-wall was simulated using two constitutive models: an elastic perfectly plastic (Mohr-Coulomb) model and a concrete model, which considers tension and compression softening. Measured and simulated wall displacements were compared for different excavation stages. Structural failure of the wall with progressing excavation could be captured in the analysis using the concrete model. Furthermore, a reliable evaluation of the stress distribution and crack pattern in the wall could be obtained, which provides a step forward in the understanding of ultimate state conditions of DCM-walls. Overall the agreements between numerical simulation and laboratory experiment/field test can be considered very reasonable.

Original languageEnglish
Article number103380
JournalComputers and Geotechnics
Publication statusPublished - Mar 2020


  • Deep cement mixing
  • Excavation
  • Failure
  • Ground spring
  • Softening

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications


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