期刊论文

Jiang, Jianqing(lh201314@163.com)

中文

中南大学学报(自然科学版)

1672-7207

2015

46

8

3108-3117

10.11817/j.issn.1672-7207.2015.08.046

国家自然科学基金资助项目（51308198）； 湖南省自然科学基金资助项目（11JJ4031）； 湖南省教育厅资助项目（14B034）~~；

本校为第一且通讯机构

为揭示格宾网加筋土强度和变形特性的细观力学本质,利用PFC3D三维离散元计算平台的FISH语言编写数值伺服程序实现大三轴试验环境和土颗粒模型生成算法,模拟大三轴素土试样应力-应变宏观响应校正土颗粒细观参数;然后,引入平行黏结构造格宾网颗粒流模型,通过模拟其室内拉伸试验校正格宾网模型细观参数;在此基础上,建立格宾网加筋土大三轴试样的三维颗粒数值模型模拟格宾网加筋土应力-应变关系,揭示格宾网加筋土颗粒之间接触力和内部剪切位移场的渐进发展规律。研究结果表明:格宾网加筋土颗粒模型数值试验能对其力学机理做出定量和定性预测;在试样两端和两层格宾网之间,分别形成"八"字形和">

In order to reveal the mesomechanical nature of strength and deformation properties of gabion-mesh reinforced soil, the numerical servo program for triaxial test environment and generation algorithm of soil particle model was developed using FISH language of PFC<sup>3D</sup>platforms, and the mesoscopic parameters of soil particles were corrected through simulating the stress-strain macroscopic response of prime soil's large triaxial specimen. Then, the particle flow model of gabion-mesh was configured by installing parallel bond, and the mesoscopic parameters of gabion-mesh partic...