Study on Opening between Shear Boxes using DEM Simulation

Byeong Su Kim, Yuji Takeshita, Seong Wan Park, Shoji Kato

Research output: Contribution to conferencePaperpeer-review


The slope failure so far has been occurred due to the heavy rainfall, and induced losses of a human life and properties. In order to prevent these damages, the measurement and the evaluation for the strength characteristics of the ground such as the shear strength and the angle of internal friction should be required. The direct shear test (DST) which is one of testing methods for this has been generally used, and has several experimental limitations. In particular, it should be recognized that there is no the standard of the opening size between the shear boxes in the DST, and the strength characteristics can vary according to the opening size. Thus, Kim et al. (2012) suggested that the opening size is determined based on the Threshold-Line. In this study, the Threshold-Line (TL) proposed by Kim et al. (2012) was examined through the distinct element method (DEM) simulation. As a result, the shear behaviors in the DEM simulation are similar to the experimental results by Kim et al. (2012). Through the results of the DEM simulation, it can be confirmed that the TL can be a standard for the opening size in the DST.

Original languageEnglish
Number of pages4
Publication statusPublished - 2015
Event15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015 - Fukuoka, Kyushu, Japan
Duration: Nov 9 2015Nov 13 2015


Other15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015
CityFukuoka, Kyushu


  • DEM simulation
  • Direct shear test
  • Opening size
  • Threshold-Line

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Soil Science


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