Modeling of granular soil-structure interface under monotonic and cyclic loading with the nonlinear approach

Zhang, Pei; Kang, Fei; Dai, De‐Zai

doi:10.1016/j.compgeo.2023.105480

Cited by 3 publications

(1 citation statement)

References 54 publications

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“…Numerous research results have shown that the soil-structure interface exhibits a strain-softening phenomenon during the shear process [21,22]. To derive the softening/hardening damage mathematical model applicable to the silt-steel interface in the Yellow River Delta and describe the two states of hardening and softening, this paper will combine the classic hyperbola model [23] and the classic rock damage model [14] to build.…”

Section: Assumptionmentioning

confidence: 99%

Softening/Hardening Damage Model and Numerical Implementation of Seabed Silt-Steel Interface in Yellow River Underwater Delta

Peng

Liu

Geng

et al. 2023

JMSE

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The interaction between soil and structure is a research hotspot in ocean engineering, and the shear performance of interfaces is an essential factor affecting the bearing capacity of offshore structures. Taking the Yellow River Underwater Delta as the research area, the Softening/Hardening damage model of the silt–steel interface and the determination method of model parameters are proposed based on the statistical damage theory. Through the interface monotonic shear test under the conditions of different normal stress, roughness and water content, the shear mechanical properties and volumetric deformation laws on the silt–steel interface are analyzed, and the damage model parameters are obtained. Finally, a FRIC subroutine for the damage model was developed based on ABAQUS. The research results indicate the following: (1) The interface between silt and steel exhibits two characteristics, softening/hardening and shear shrinkage/expansion, under different conditions. Roughness significantly impacts interfacial cohesion, while water content mainly affects the internal friction angle. (2) The softening model based on the classic rock damage model can better simulate the stress–strain relationship of the silt–steel interface under high normal stress and low water content. In contrast, the hardening model based on the classic hyperbola model can better simulate the stress–strain relationship under low normal stress and high water content. The calculated results of the softening/hardening model agree with the experimental results, and the model has 7 parameters. (3) The developed FRIC subroutine can effectively simulate the nonlinear mechanical behavior of the interface between silt and steel. The research results provide a reference for exploring the stability analysis of offshore structures considering interface weakening effects.

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Section: Assumptionmentioning

confidence: 99%

Softening/Hardening Damage Model and Numerical Implementation of Seabed Silt-Steel Interface in Yellow River Underwater Delta

Peng

Liu

Geng

et al. 2023

JMSE

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Macro/meso-evolution of shear behavior of sand-steel interface in pipe jacking via digital image correlation (DIC) technology

Liu,

Wu,

et al. 2025

Tunnelling and Underground Space Technology

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A thermo-mechanical model for saturated and unsaturated soil–structure interfaces

Cui,

Zhou

2024

Can. Geotech. J.

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Shear behaviour of soil-structure interfaces greatly affects the performance of geotechnical structures. The soil-structure interfaces in geothermal structures (e.g., energy pile and energy wall) are often subjected to varying temperature and suction conditions. However, there is no constitutive model to simulate the coupled effects of suction and temperature on the shear behaviour of soil-structure interfaces. In this study, a thermo-mechanical model was newly developed based on the bounding surface plasticity framework to predict the thermo-mechanical behaviour of saturated and unsaturated interfaces. A power function was used to calculate the degree of saturation at the interface and improve the evaluation of suction effects on interface shear strength. A linear relationship between temperature and interface critical state friction angle was proposed to incorporate thermal effects. New equations were also proposed to describe the critical state lines (CSLs) in the void ratio versus stress plane (e-ln⁡σ_n^* ) and to model the shearing-induced deformation at various temperatures and suctions. The experimental data from different interfaces in the literature were used to evaluate the model capability. Comparisons between measured and computed results suggest that this model can well capture the coupled effects of temperature, suction and net normal stress on the shear behaviour of interfaces.

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Modeling of granular soil-structure interface under monotonic and cyclic loading with the nonlinear approach

Cited by 3 publications

References 54 publications

Softening/Hardening Damage Model and Numerical Implementation of Seabed Silt-Steel Interface in Yellow River Underwater Delta

Softening/Hardening Damage Model and Numerical Implementation of Seabed Silt-Steel Interface in Yellow River Underwater Delta

Macro/meso-evolution of shear behavior of sand-steel interface in pipe jacking via digital image correlation (DIC) technology

A thermo-mechanical model for saturated and unsaturated soil–structure interfaces

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