Influence of Exposure Temperature on Shaft Capacity of Steel Piles in Ice-Poor and Ice-Rich Frozen Soils

Aldaeef, Abdulghader A.; Rayhani, Mohammad T.

doi:10.1007/978-3-030-01902-0_20

Cited by 5 publications

(1 citation statement)

References 13 publications

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“…Thus, it is necessary to research the mechanical characteristics of interface between ice and frozen soil under different conditions. The direct shear test is a conventional way to research the interface properties between frozen soil and structure, which has been accepted by many scholars (Liu et al, 2014;Aldaeef et al, 2018;Yazdani., 2019). Biggar et al (1993) investigated the interface freezing strength between bored pile and saline permafrost through field test in Canadian, it is found that the salt content of frozen soil and temperature affected the freezing strength of frozen soil-pile interface by changing the unfrozen water content in the frozen soil around the pile.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation research on the mechanical behavior of ice-frozen soil interface

Shi

Zhu

2023

Preprint

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As the weakest segment within frozen soil, the interface between ice and frozen soil undertakes the link of load transmission. The mechanical parameters between ice and frozen soil influence the deformation and strength of frozen soil. To investigate the mechanical behaviors of ice-frozen soil interface, the cryogenic direct shear tests were carried out and the deformation, strength properties of interface were analyzed. The shear stress of interface was described by generalized hyperbolic model and the physical meaning of the model parameters were defined. Based on the generalized hyperbolic model, the shear stiffness of interface was derived. The effect of temperature on the strength, shear stiffness of interface under different initial moisture contents, initial void ratios and normal stresses were discussed. The three-dimensional finite element model was established using COMSOL Multiphysics, and the mechanical behaviors of ice frozen soil interface were researched.

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