Loading [MathJax]/extensions/tex2jax.js

Study on stress dips in granite residual soil based on experiments and DEM

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Junsheng Chen
  • Bochao Zhang
  • Lingfeng Guo
  • Heng Zhang
  • Martin Achmus
  • Michael Beer

External Research Organisations

  • South China University of Technology
  • Wuyi University

Details

Original languageEnglish
Article number47
Number of pages16
JournalGranular matter
Volume27
Issue number3
Early online date16 Apr 2025
Publication statusPublished - Jul 2025

Abstract

The stress dip, a local minimum in the vertical stress distribution beneath granular piles, has captured the interest of many researchers. Studying stress dips in granite residual soil is of critical importance due to its relevance to engineering projects, soil mechanics, and particle behaviors. The purpose of this study is to confirm the existence of the stress dip in granite residual soil and explore its evolution during accumulation. In this work, granite residual soil conical piles were formed by the localized source piling method in experiments. During the experiment, Teflon film was placed below the piles to hinder the formation of stress dips, while the vertical stress distribution beneath each pile at varying heights was measured to monitor the evolution of stress dips. Besides, DEM simulations were employed to analyze the formation and evolution mechanism of the stress dips. The experimental and simulation results showed that stress dips can be formed in granite residual soil piles, occurring both in the center and locally. Stress dips evolve gradually through accumulation rather than being intrinsic properties of the piles. From a spatial perspective, no clear pattern is observed in the location of the stress dips. Quantitatively, as pile size increases, stress dips become more prevalent throughout the entire scope, although individual dips may dissipate. The normalized analysis of the central stress dip suggests that the normalized stress distribution pattern of the central stress dip is independent of pile size. The formation and evolution of stress dips are influenced by the force chain network, which consists of arch and ring force chains that are promoted by the supporting effect of the base plate and the particle squeezing effect.

Keywords

    DEM, Granite residual soil, Granular piles, Stress dips

ASJC Scopus subject areas

Cite this

Study on stress dips in granite residual soil based on experiments and DEM. / Chen, Junsheng; Zhang, Bochao; Guo, Lingfeng et al.
In: Granular matter, Vol. 27, No. 3, 47, 07.2025.

Research output: Contribution to journalArticleResearchpeer review

Chen J, Zhang B, Guo L, Zhang H, Achmus M, Beer M. Study on stress dips in granite residual soil based on experiments and DEM. Granular matter. 2025 Jul;27(3):47. Epub 2025 Apr 16. doi: 10.1007/s10035-025-01523-w
Chen, Junsheng ; Zhang, Bochao ; Guo, Lingfeng et al. / Study on stress dips in granite residual soil based on experiments and DEM. In: Granular matter. 2025 ; Vol. 27, No. 3.
Download
@article{27f34656816a405a8220d6502e51060a,
title = "Study on stress dips in granite residual soil based on experiments and DEM",
abstract = "The stress dip, a local minimum in the vertical stress distribution beneath granular piles, has captured the interest of many researchers. Studying stress dips in granite residual soil is of critical importance due to its relevance to engineering projects, soil mechanics, and particle behaviors. The purpose of this study is to confirm the existence of the stress dip in granite residual soil and explore its evolution during accumulation. In this work, granite residual soil conical piles were formed by the localized source piling method in experiments. During the experiment, Teflon film was placed below the piles to hinder the formation of stress dips, while the vertical stress distribution beneath each pile at varying heights was measured to monitor the evolution of stress dips. Besides, DEM simulations were employed to analyze the formation and evolution mechanism of the stress dips. The experimental and simulation results showed that stress dips can be formed in granite residual soil piles, occurring both in the center and locally. Stress dips evolve gradually through accumulation rather than being intrinsic properties of the piles. From a spatial perspective, no clear pattern is observed in the location of the stress dips. Quantitatively, as pile size increases, stress dips become more prevalent throughout the entire scope, although individual dips may dissipate. The normalized analysis of the central stress dip suggests that the normalized stress distribution pattern of the central stress dip is independent of pile size. The formation and evolution of stress dips are influenced by the force chain network, which consists of arch and ring force chains that are promoted by the supporting effect of the base plate and the particle squeezing effect.",
keywords = "DEM, Granite residual soil, Granular piles, Stress dips",
author = "Junsheng Chen and Bochao Zhang and Lingfeng Guo and Heng Zhang and Martin Achmus and Michael Beer",
note = "Publisher Copyright: {\textcopyright} The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.",
year = "2025",
month = jul,
doi = "10.1007/s10035-025-01523-w",
language = "English",
volume = "27",
journal = "Granular matter",
issn = "1434-5021",
publisher = "Springer New York",
number = "3",

}

Download

TY - JOUR

T1 - Study on stress dips in granite residual soil based on experiments and DEM

AU - Chen, Junsheng

AU - Zhang, Bochao

AU - Guo, Lingfeng

AU - Zhang, Heng

AU - Achmus, Martin

AU - Beer, Michael

N1 - Publisher Copyright: © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.

PY - 2025/7

Y1 - 2025/7

N2 - The stress dip, a local minimum in the vertical stress distribution beneath granular piles, has captured the interest of many researchers. Studying stress dips in granite residual soil is of critical importance due to its relevance to engineering projects, soil mechanics, and particle behaviors. The purpose of this study is to confirm the existence of the stress dip in granite residual soil and explore its evolution during accumulation. In this work, granite residual soil conical piles were formed by the localized source piling method in experiments. During the experiment, Teflon film was placed below the piles to hinder the formation of stress dips, while the vertical stress distribution beneath each pile at varying heights was measured to monitor the evolution of stress dips. Besides, DEM simulations were employed to analyze the formation and evolution mechanism of the stress dips. The experimental and simulation results showed that stress dips can be formed in granite residual soil piles, occurring both in the center and locally. Stress dips evolve gradually through accumulation rather than being intrinsic properties of the piles. From a spatial perspective, no clear pattern is observed in the location of the stress dips. Quantitatively, as pile size increases, stress dips become more prevalent throughout the entire scope, although individual dips may dissipate. The normalized analysis of the central stress dip suggests that the normalized stress distribution pattern of the central stress dip is independent of pile size. The formation and evolution of stress dips are influenced by the force chain network, which consists of arch and ring force chains that are promoted by the supporting effect of the base plate and the particle squeezing effect.

AB - The stress dip, a local minimum in the vertical stress distribution beneath granular piles, has captured the interest of many researchers. Studying stress dips in granite residual soil is of critical importance due to its relevance to engineering projects, soil mechanics, and particle behaviors. The purpose of this study is to confirm the existence of the stress dip in granite residual soil and explore its evolution during accumulation. In this work, granite residual soil conical piles were formed by the localized source piling method in experiments. During the experiment, Teflon film was placed below the piles to hinder the formation of stress dips, while the vertical stress distribution beneath each pile at varying heights was measured to monitor the evolution of stress dips. Besides, DEM simulations were employed to analyze the formation and evolution mechanism of the stress dips. The experimental and simulation results showed that stress dips can be formed in granite residual soil piles, occurring both in the center and locally. Stress dips evolve gradually through accumulation rather than being intrinsic properties of the piles. From a spatial perspective, no clear pattern is observed in the location of the stress dips. Quantitatively, as pile size increases, stress dips become more prevalent throughout the entire scope, although individual dips may dissipate. The normalized analysis of the central stress dip suggests that the normalized stress distribution pattern of the central stress dip is independent of pile size. The formation and evolution of stress dips are influenced by the force chain network, which consists of arch and ring force chains that are promoted by the supporting effect of the base plate and the particle squeezing effect.

KW - DEM

KW - Granite residual soil

KW - Granular piles

KW - Stress dips

UR - http://www.scopus.com/inward/record.url?scp=105002925854&partnerID=8YFLogxK

U2 - 10.1007/s10035-025-01523-w

DO - 10.1007/s10035-025-01523-w

M3 - Article

AN - SCOPUS:105002925854

VL - 27

JO - Granular matter

JF - Granular matter

SN - 1434-5021

IS - 3

M1 - 47

ER -

By the same author(s)