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<p>High and low temperatures, stress loading and soil particle size significantly influence the interface interaction between calcareous sand and geosynthetics, which determines the safety and stability of reinforced calcareous sand engineering facility. In this paper, a series of pull-out tests were carried out on calcareous sand-geogrid interfaces (GRCS) with particle sizes of 0.25&#xa0;mm – 1&#xa0;mm (S1 sand), 1&#xa0;mm – 2&#xa0;mm (S2 sand) and 2&#xa0;mm – 4&#xa0;mm (S3 sand), and silica sand-geogrid interfaces (GRSS) with particle size of 1&#xa0;mm – 2&#xa0;mm (S4 sand) at temperatures of 0&#xa0;°C – 80&#xa0;°C. The effects of temperature on the mechanical properties of GRCS interfaces with different particle sizes were investigated. The experimental results show that with increasing temperature, the shear strength of the GRCS interface decrease. Moreover, the maximum shear strength of the GRCS interface occurs at 0&#xa0;°C. Temperature has a significant effect on the relative breakage ratio <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(B_{r}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>B</mi> <mi>r</mi> </msub> </math></EquationSource> </InlineEquation> of calcareous sand. Based on the experimental results, an intelligent constitutive model of the GRCS interface under pull-out load was established by considering the effects of temperature, particle size and other factors using deep learning technology.</p>

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The pull-out mechanical properties of the interface between geogrid and calcareous sand considering temperature effects

  • 期刊论文

  • 发表日期：

    2025年12月29日

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  • Danda Shi,
  • Haoyu Wang,
  • Gary Fowmes,
  • Zhiming Chao

摘要

High and low temperatures, stress loading and soil particle size significantly influence the interface interaction between calcareous sand and geosynthetics, which determines the safety and stability of reinforced calcareous sand engineering facility. In this paper, a series of pull-out tests were carried out on calcareous sand-geogrid interfaces (GRCS) with particle sizes of 0.25 mm – 1 mm (S1 sand), 1 mm – 2 mm (S2 sand) and 2 mm – 4 mm (S3 sand), and silica sand-geogrid interfaces (GRSS) with particle size of 1 mm – 2 mm (S4 sand) at temperatures of 0 °C – 80 °C. The effects of temperature on the mechanical properties of GRCS interfaces with different particle sizes were investigated. The experimental results show that with increasing temperature, the shear strength of the GRCS interface decrease. Moreover, the maximum shear strength of the GRCS interface occurs at 0 °C. Temperature has a significant effect on the relative breakage ratio \(B_{r}\) B r of calcareous sand. Based on the experimental results, an intelligent constitutive model of the GRCS interface under pull-out load was established by considering the effects of temperature, particle size and other factors using deep learning technology.