Mesomechanical simulation of sand mechanical properties

ZHOU Jian; CHI Yong

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Mesomechanical simulation of sand mechanical properties

更新时间：2026-06-25

- Mesomechanical simulation of sand mechanical properties
- Vol. 24, Issue 6, (2003)
- 作者机构：
  
  1. 同济大学地下建筑与工程系,上海,200092
  2. 浦东新区建设局,上海,200135
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU441
- Online First：19 August 2014，
  
  Published：2003
- 稿件说明：
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ZHOU Jian, CHI Yong. Mesomechanical simulation of sand mechanical properties[J]. 2003, 24(6).
DOI：

ZHOU Jian, CHI Yong. Mesomechanical simulation of sand mechanical properties[J]. 2003, 24(6). DOI：

摘要

基于颗粒流理论，对砂土的室内双轴试验和砂土剪切带形成与发展进行了数值模拟，基本再现了砂土试样应力-应变关系。主要研究了颗粒粒径、颗粒摩擦系数等细观参数变化时试样宏观性质的变化情况。对比分析了室内试验和颗粒流数值模拟试验的砂土剪切带特征。同时对比研究了模型试样颗粒粒径、颗粒刚度和摩擦系数等细观参数的变化，对剪切带的形成与发展过程的影响。结果表明：通过颗粒流数值模型试验可以有效模拟砂土剪切带的形成与发展机理。

Abstract

Based on the theory of Particle Flow Code (PFC)

the biaxial test and shear-band evolution of sand are simulated . The macro stress-strain relation of sand is reproduced by PFC model. The variation rules of macro properties of the sand sample with micro parameters

such as particle size and friction coefficient of particle

are studied. The results of sand shear-band in lab test are compared with PFC model

and the efffect of micro parameters

such as particle size

stiffness and friction coefficient

to the formation and extension process of the shear-band is analyzed. It is shown that the mechanism of sand shear-band can be simulated perfectly by PFC model.

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