Studay on the Anisotropy of Clay

Chen, Lan

doi:10.4028/www.scientific.net/amm.193-194.477

Cited by 1 publication

(1 citation statement)

References 4 publications

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“…Yao and Tian [33] established a failure criterion and constitutive model appropriate for anisotropic soils by modifying the stress components in different directions. Chen [34] experimentally analyzed the development and disappearance of stress-induced anisotropy in normally consolidated clay, anisotropically consolidated clay, and overconsolidated clay under different stress history conditions. However, the previous studies were focused on stability evaluations of slopes [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Evaluating Pile-Supported Embankment Considering the Soil Anisotropy Effect

Zhuang,

Chen,

Wang

et al. 2023

Applied Sciences

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It is an economical way to use the pile-supported embankment for the construction of the embankment over soft soil. The combined use of piles and reinforcement effectively reduces the differential settlement of the embankment surface. However, the previous analysis of embankment stress and settlement did not take into account the anisotropy in the embankment filler. In this paper, the UMAT subroutine is developed by using the material subroutine interface in ABAQUS 2016 finite element software. The anisotropy of soil cohesion and friction angle has been incorporated into the Mohr–Coulomb yield criterion so that it can consider the anisotropy of soil. The accuracy of the anisotropic yield criterion in this paper is verified by an ABAQUS source program and related engineering examples. It is found that the anisotropy value of soil cohesion is inversely proportional to the stress ratio on the pile–soil interface while being directly proportional to the tensile stress applied to the geogrid. The results show that the anisotropy of the friction angle decreases with the soil arching effect but increases by 23.1% with the tensile stress on the geogrid. The position of the settlement plane remains relatively constant at 2.3 m as the friction angle anisotropy coefficient increases. These research results provide valuable theoretical guidance for on-site construction design.

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