Investigation on Parameter Calibration Method and Mechanical Properties of Root-Reinforced Soil by DEM. (24th April 2021)

• Record Type: Journal Article
• Authors: Bai, Hao; Li, Ruidong; Wang, Wubin; Xie, Kang; Wang, Xiang
• Other Names: Zhang Wangcheng Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2021(2021)
• Publication Date: 2021-04-24
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2021/6623489
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : 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.