Numerical simulation of sand deformation under monotonic loading and mesomechanical analysis

LIU Yang; WU Shun-chuan; ZHOU Jian

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Numerical simulation of sand deformation under monotonic loading and mesomechanical analysis

更新时间：2026-06-25

- Numerical simulation of sand deformation under monotonic loading and mesomechanical analysis
- Vol. 29, Issue 12, (2008)
- 作者机构：
  
  1. 北京科技大学土木与环境工程学院土木系,北京,100083
  2. 同济大学地下建筑与工程系,上海,200092
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU441
- Online First：11 August 2013，
  
  Published：2008
- 稿件说明：
移动端阅览
LIU Yang, WU Shun-chuan, ZHOU Jian. Numerical simulation of sand deformation under monotonic loading and mesomechanical analysis[J]. 2008, 29(12).
DOI：

LIU Yang, WU Shun-chuan, ZHOU Jian. Numerical simulation of sand deformation under monotonic loading and mesomechanical analysis[J]. 2008, 29(12). DOI：

摘要

采用离散单元法的颗粒流理论，模拟了松砂和密砂在单调荷载作用下的变形过程，研究了砂土渐进破坏过程中的宏观力学行为和细观组构参量的演化规律。采用PFC的FISH语言开发了细观组构统计程序，通过记录加载不同时刻试样的细观参量，如配位数、接触法向分布、粒间法向接触力、切向接触力等的演化，分析了砂土变形过程中细观组构变化与宏观力学响应之间的内在联系。应用表征上述量的组构参数研究了砂土的诱发各向异性，探讨了松砂剪缩、密砂剪胀的细观机制。研究成果对于揭示砂土变形的细观机制以及建立砂土的细观力学模型具有重要意义。

Abstract

Based on the biaxial test by PFC2D

the behavior of sand with different densities under monotonic loading is simulated by discrete element method. The evolution law of macromechanism behaviors and mesofabric parameters is studied during sand soil progressive failure process. A statistic code is developed by fish language in PFC to study the evolution of microscopic fabric parameters including coordination number distribution

contact normal

normal contact force and shear contact force. The relationship between mesoparameters and macromechanical response can be achieved. The mechanism of induced anisotropy

compaction of loose sand and dilatancy of dense sand are discussed by using the mesofabric parameters. The results are valuable for the studying of mesomechanism of sand deformation and the construction of mesomodel for sand.

关键词

Keywords

references

Views

1850

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical study of uniaxial rheological tests for rockfill by particle flow code

Study of process of open-ended pipe pile driven into sand soil by particle flow simulation

Study of model test on bearing capacity of screw piles in sand

Mesoscopic study of interface properties of geogrid-reinforced soil

Mechanical properties and microstructural evolution of peaty soils subjected to freeze-thaw cycles

Related Author

CHI Shi-chun

SHAO Lei

HUANG Run-qiu

CEN Duo-feng

HUANG Da

ZHAN Yong-xiang

YAO Hai-lin

DONG Qi-peng

Related Institution

HydroChina Chengdu Engineering Corporation

Faculty of Infrastructure Engineering, Dalian University of Technology

Key Laboratory of New Technology for Construction of Cities in Mountain Area, Ministry of Education, Chongqing University

State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology

College of Civil Engineering, Chongqing University

AI问答

⁰