考虑颗粒破碎特性的机场高填方变形与稳定性分析

Translated title of the contribution: Deformation and stability analysis of airport high coarse-granular fills considering particle breakage characteristics

Junjie Shan, Hanlong Liu, Yang Xiao, Zhenyu Yin, Zhongping Yang, Yangping Yao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

In recent years, the airport high coarse-granular fill construction in the southwest mountain area of China has entered a stage of rapid development, and coarse-grained soils such as rockfill materials with comparatively good engineering characteristics are widely used in high coarse-granular fill. The internal stress of high coarse-granular fill is large, and coarse-grained soil will cause particle breakage. It is of great engineering significance to analyze the impact of particle breakage characteristics on the deformation and stability of high coarse-granular fill. Modeling high coarse-granular fills using discrete element particle flow method. The deformation evolution process of the high coarse-granular fill is simulated through the strength reduction method. Based on the Russell & Muir Wood particle breakage criterion, two cases of particle breakage and don't breakage were simulated and analyzed respectively. In addition, we also focus on the effect of particle fragmentation on the deformation and stability of the high coarse-granular fill. DEM modelling results indicate that the small-size grains abraded from the host coarse-granular grains will slip and fill the gaps among the host grains, leading to an increase in deformation and a decrease in the shear strength, and further resulting in a decrease in safety factor and stability of high coarse-granular fill.

Translated title of the contributionDeformation and stability analysis of airport high coarse-granular fills considering particle breakage characteristics
Original languageChinese
Pages (from-to)17-22
Number of pages6
JournalTumu yu Huanjing Gongcheng Xuebao/Journal of Civil and Environmental Engineering
Volume42
Issue number2
DOIs
Publication statusPublished - 1 Apr 2020

Keywords

  • Deformation
  • Discrete element
  • High coarse-granular fill
  • Particle breakage
  • Stability

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction

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