Investigation on Parameter Calibration Method and Mechanical Properties of Root-Reinforced Soil by DEM

Hao Bai, Ruidong Li, Wubin Wang, Kang Xie, Xiang Wang
2021 Mathematical Problems in Engineering  
The behavior of root-soil system has raised more and more attention in both ecological and geotechnical fields. In this study, a two-dimensional discrete element method is employed using PFC2D to simulate the root-reinforced soil. The root system is mimicked by chains of bonded discs, while the soil is modeled by granular particles. The tensile strength of the root is modeled by interdiscs' bonding strength. Three laboratory tests were studied to calibrate the micromechanical parameters of DEM.
more » ... parameters of DEM. Finally, direct shear tests on rooted soil are simulated to investigate the influence of different root characteristics on the root reinforcement effect.
doi:10.1155/2021/6623489 doaj:8306892f994541cab2a330d50602b640 fatcat:znlgc3swfnf3hnwr3nisexjdr4