Effect of grouting pressure and overburden pressure on pullout resistance of soil nails

HONG Cheng-yu; LIU Zi-xiong; ZHANG Meng-xi; ZHOU Qi

doi:10.16285/j.rsm.2017.S2.044

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Effect of grouting pressure and overburden pressure on pullout resistance of soil nails

更新时间：2026-06-25

- Effect of grouting pressure and overburden pressure on pullout resistance of soil nails
- Vol. 38, Issue S2, Pages: 317-322(2017)
- 作者机构：
  
  1. 上海大学土木工程系,上海,200444
  2. 汕头大学广东省高等学校结构与风洞重点实验室,广东,汕头,515063
  3. 汕头大学土木与环境工程系,广东,汕头,515063
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.S2.044
  CLC： TU443
- Online First：05 June 2018，
  
  Published：2017
- 稿件说明：
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HONG Cheng-yu, LIU Zi-xiong, ZHANG Meng-xi, et al. Effect of grouting pressure and overburden pressure on pullout resistance of soil nails[J]. 2017, 38(S2): 317-322.
DOI：

HONG Cheng-yu, LIU Zi-xiong, ZHANG Meng-xi, et al. Effect of grouting pressure and overburden pressure on pullout resistance of soil nails[J]. 2017, 38(S2): 317-322. DOI： 10.16285/j.rsm.2017.S2.044.

摘要

灌浆压力和上覆土压力是影响土钉峰值摩阻力的关键参数，考虑土钉不同的注浆压力与上覆土压力的工况，结合现场试验与研究人员大量的室内土钉拉拔试验结果，系统地分析一些关键参数对土钉峰值摩阻力的影响程度，定量地分析了关键参数对土钉摩擦系数的影响程度。为方便衡量各个参数对土钉的摩擦系数的影响性，利用归一化摩擦系数AFC在不同的试验条件下土钉试验结果进行对比分析，发现土钉的归一化摩擦系数对上覆土压力的依赖程度最高（变化范围为0～1），而对饱和度的依赖性最弱（变化范围为0～0.18）。

Abstract

This paper presents a systematic investigation of the effect of critical parameters on the peak pullout resistance of soil nails

including degree of saturation

grouting pressure

overburden pressure

and roughness conditions of soil nails according to both laboratory and field pullout test results. Influences of the above parameters on apparent coefficient of friction(ACF) are quantitatively investigated; and to facilitate the evaluation of influences of these parameters on ACF values

a normalized ACF is proposed for different pullout testing conditions. It is found that the dependence of ACF on overburden soil pressure is the highest (ACF ranges from 0-1) while this dependence is the lowest for degree of saturation of soils (ACF ranges from 0-0.18).

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