Mesoscopic study of interface properties of geogrid-reinforced soil

CHEN Jian-feng; LI Hui-li; LIU Jun-xiu; ZHOU Jian

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Mesoscopic study of interface properties of geogrid-reinforced soil

更新时间：2026-06-25

- Mesoscopic study of interface properties of geogrid-reinforced soil
- Vol. 32, Issue S1, (2011)
- 作者机构：
  
  1. 同济大学岩土及地下工程教育部重点实验室,上海,200092
  2. 上海市地质调查研究院,上海,200072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU44
- Online First：16 May 2011，
  
  Published：2011
- 稿件说明：
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CHEN Jian-feng, LI Hui-li, LIU Jun-xiu, et al. Mesoscopic study of interface properties of geogrid-reinforced soil[J]. 2011, 32(S1).
DOI：

CHEN Jian-feng, LI Hui-li, LIU Jun-xiu, et al. Mesoscopic study of interface properties of geogrid-reinforced soil[J]. 2011, 32(S1). DOI：

摘要

对大尺寸土工格栅筋土拉拔试验进行颗粒流数值模拟，从细观角度研究了筋土界面特性。分析结果表明，利用颗粒流理论及程序中的“clump”方法开发的类三角形砂土颗粒与实际砂土颗粒性状较一致；拉拔过程中筋土上下界面并不对称，下界面扰动范围比上界面大；在砂土密实度及法向应力较低情况下，筋土界面厚度随法向应力的增大而减小，两者呈一负相关的线性关系。

Abstract

A large-size reinforced soil pull-out test was carried out and was simulated by particle flow code(PFC) to investigate the microscopic properties of geogrid-soil interface. The results show that the behavior of trigonometric group particles developed based on “clump” inherent in PFC is close to that of practical sand particles. The upper and lower geogrid-soil interfaces are not symmetrical such that the disturbed area of lower interface is higher than that of upper interface. Under the condition of low compactness of sand as well as low normal stress

the thickness of geogrid-soil interface decreases with increase of normal stress

exhibiting negative linear relationship.

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