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

被引：14

作者：

Bai, Hao ^{[1
]}

Li, Ruidong ^{[2
]}

Wang, Wubin ^{[3
]}

Xie, Kang ^{[2
]}

Wang, Xiang ^{[4
]}

机构：

[1] Sichuan Expressway Construct & Dev Grp Co Ltd, Chengdu 610041, Peoples R China

[2] Cent South Univ, Dept Civil Engn, Changsha 410075, Peoples R China

[3] Southwest Jiaotong Univ, Natl Engn Lab Technol Geol Disaster Prevent Land, Chengdu 611731, Peoples R China

[4] Univ Hong Kong, Dept Civil Engn, Hong Kong, Peoples R China

来源：

MATHEMATICAL PROBLEMS IN ENGINEERING | 2021年 / 2021卷

关键词：

SHEAR TESTS; TREE ROOTS; RESISTANCE; STRENGTH;

D O I：

10.1155/2021/6623489

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：18

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