Modelling Soil Desiccation Cracking Using a Hybrid Continuum-Discrete Element Method
Shrinkage induced crack pattern is a universal phenomenon, soil cracking due to drying shrinkage is not an exception. In geotechnical engineering, desiccation shrinkage induced cracking has a profound effect on the engineering properties of soils as it can considerably increase the hydraulic conductivity and decreases the shear strength of a soil. Thus, it poses a significant threat to the hydraulic and structural integrity of earthworks. This paper presents the application of the hybrid continuum-discrete element method to simulate soil desiccation shrinkage and cracking with a mix-mode cohesive fracture model. The applicability of the proposed approach is demonstrated through numerical simulation of laboratory and field desiccation tests. The simulation results have shown good agreements with the laboratory and field observations.
KeywordsSoil Desiccation Cracking Simulation
Funding support from China State Key Laboratory of Geohazard Prevention and Geoenvironmental Protection, Chengdu University of Technology, via project SKLGP2016K003 is gratefully acknowledged.
- Singh, K.B., Tirumkudulu, M.S.: Cracking in drying colloidal films. Phys. Rev. Lett. 98(21) (2007). https://doi.org/10.1103/physrevlett.98.218302