关于土工格栅合理网孔尺寸的研究

TANG Xiao-song; ZHENG Ying-ren; WANG Yong-fu; Feng Yu-shi

doi:10.16285/j.rsm.2017.06.006

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关于土工格栅合理网孔尺寸的研究

更新时间：2026-06-25

- 关于土工格栅合理网孔尺寸的研究
- Vol. 38, Issue 6, Pages: 1583-1588(2017)
- 作者机构：
  
  1. 重庆市地质灾害防治工程技术研究中心
  2. 后勤工程学院军事土木工程系
  3. 重庆能源职业学院土木工程系
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.06.006
  CLC： TU43
- Published：2017
- 稿件说明：
移动端阅览
[1]唐晓松,郑颖人,王永甫,冯雨实.关于土工格栅合理网孔尺寸的研究[J].岩土力学,2017,38(06):1583-1588.

TANG Xiao-song, ZHENG Ying-ren, WANG Yong-fu, et al. 关于土工格栅合理网孔尺寸的研究[J]. 2017, 38(6): 1583-1588.
[1]唐晓松,郑颖人,王永甫,冯雨实.关于土工格栅合理网孔尺寸的研究[J].岩土力学,2017,38(06):1583-1588. DOI： 10.16285/j.rsm.2017.06.006.

TANG Xiao-song, ZHENG Ying-ren, WANG Yong-fu, et al. 关于土工格栅合理网孔尺寸的研究[J]. 2017, 38(6): 1583-1588. DOI： 10.16285/j.rsm.2017.06.006.

摘要

土工格栅与土之间的界面参数是表征土工格栅加筋作用的重要参数

对土工格栅加筋土结构的稳定和变形破坏特征有显著影响。目前各类规范或标准关于格栅-土界面参数的取值均未考虑土工格栅特有的网孔结构尺寸的影响

致使实际工程中土工格栅的选用存在较大的人为性。针对这一问题

首先通过室内试验和数值方法的对比分析

建立了土工格栅界面特性研究的数值模型

并验证了数值方法研究土工格栅界面特性的可行性。以土工格栅界面特性研究的数值模型为基础

进一步开展了不同网孔尺寸条件下土工格栅界面特性的研究。研究结果表明

土工格栅网孔结构的网孔尺寸对格栅-土的界面特性有显著影响。通过分析不同网孔尺寸对界面特性影响的规律发现

为了更直观地揭示土工格栅的加筋作用

应该将格栅-土界面的摩擦作用从界面综合的摩擦作用中剥离出来。同时

土工格栅的合理网孔尺寸应保证格栅-土之间的有效接触面积占整个界面面积的1/3左右。

Abstract

The interfacial properties between geo-grid and soil are important for representing the reinforcement of the geo-grid and are of great influences on the stability and the deformation-failure characteristics of geo-grid structures.At present

various specifications and standards fail to consider the influences of mesh sizes on the parameters selection of geo-grid soil interface

leading to artificial selection of geo-grid in practical engineering.In this paper

the numerical model studies the characters of geo-grid interface through comparative analysis between indoor experiments and numerical methods.The results show that the mesh size of geo-gird has dramatic influences on the characteristics of geo-grid interface.Through analyzing the principles of the influences of different mesh sizes on the interface characters

it shows that the friction effects of geo-grid interface should be excluded from the comprehensive friction on the interface to explore the effects of reinforcement more directly.Meanwhile

the reasonable mesh size of geo-grid should ensure that the effective contact between geo-grid and soil should be one-third of the whole interface.

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