Journal
INTERNATIONAL JOURNAL OF GEOMECHANICS
Volume 18, Issue 3, Pages -Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)GM.1943-5622.0001102
Keywords
Coefficient of earth pressure at rest; Granular soil; Discrete element method; Small strain shear stiffness
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Funding
- State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology (CUMT) [SKLGDUEK1712]
- National Key Research and Development Program [2016YFC0800204]
- National Natural Science Foundation of China [51308408, 51428901]
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The discrete element method (DEM) was used to investigate the coefficient of earth pressure at rest, K-0, of granular soils. The results indicate that K-0 decreases as the void ratio decreases and the vertical stress increases. The K-0 of specimens prepared by different methods may be quite different despite the void ratio and vertical stress being the same. The analysis reveals that at a particulate level, the coordination number of the soil determines the K-0. Both DEM simulation and laboratory data indicate that there is a good relationship between the K-0 and the small strain shear stiffness.
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