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

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

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...

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Veröffentlicht in:Mathematical problems in engineering 2021, Vol.2021, p.1-18
Hauptverfasser: Bai, Hao, Li, Ruidong, Wang, Wubin, Xie, Kang, Wang, Xiang
Format: Artikel
Sprache:eng
Schlagworte:
Bonding strength
Calibration
Discrete element method
Laboratories
Laboratory tests
Mathematical models
Mathematical problems
Mechanical properties
Parameters
Reinforced soils
Research methodology
Shear strength
Shear tests
Simulation
Soil investigations
Soil mechanics
Soil properties
Spheres
Tensile strength
Tension tests
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Beschreibung
Zusammenfassung: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. Finally, direct shear tests on rooted soil are simulated to investigate the influence of different root characteristics on the root reinforcement effect.
ISSN:1024-123X
1563-5147
DOI:10.1155/2021/6623489