Undrained stability of ring foundations: axisymmetry, anisotropy, and nonhomogeneity

S Keawsawasvong, J Shiau… - International Journal …, 2022 - ascelibrary.org
Ring foundations are widely used to support various types of offshore structures because of
the cost-effective reason. Unlike the traditional circular foundations, very few studies were …

[HTML][HTML] Design equation for stability of a circular tunnel in anisotropic and heterogeneous clay

S Keawsawasvong, B Ukritchon - Underground Space, 2022 - Elsevier
The safety assessment of tunnel stability is critical to tunnel construction and requires
accurate analysis to obtain a reliable prediction. Strength anisotropy is an important aspect …

Undrained stability of plane strain active trapdoors in anisotropic and non-homogeneous clays

S Keawsawasvong, B Ukritchon - Tunnelling and Underground Space …, 2021 - Elsevier
Despite a large number of studies on the active failure of trapdoors conducted in the
literature, there are very limited studies examining the combined influences of undrained …

Undrained stability of unlined square tunnels in clays with linearly increasing anisotropic shear strength

B Ukritchon, S Keawsawasvong - Geotechnical and Geological …, 2020 - Springer
In general, the undrained strength anisotropy of clays is found in nature. Its effect on a
stability problem during undrained loading should be considered in order to get a more …

Bearing capacity of conical footings on clays considering combined effects of anisotropy and non-homogeneity

S Keawsawasvong - Ships and Offshore Structures, 2022 - Taylor & Francis
ABSTRACT A spudcan is one of the foundation systems widely used to support the load
transferred from a jack-up platform for most offshore drilling operations. The spudcan is an …

Vertical uplift capacity of circular anchors in clay by considering anisotropy and non-homogeneity

DK Nguyen, TP Nguyen, S Keawsawasvong… - Transportation …, 2022 - Springer
New numerical analyses of the vertical uplift capacity of circular anchors embedded in
anisotropic and non-homogenous clay are presented in this paper. These analyses are …

Lower bound limit analysis of an anisotropic undrained strength criterion using second‐order cone programming

B Ukritchon, S Keawsawasvong - International Journal for …, 2018 - Wiley Online Library
In this paper, the formulation of the lower bound limit analysis of an anisotropic undrained
strength criterion using second‐order cone programming is described. The finite element …

Undrained lower bound solutions for end bearing capacity of shallow circular piles in non‐homogeneous and anisotropic clays

B Ukritchon, S Keawsawasvong - International Journal for …, 2020 - Wiley Online Library
The undrained bearing capacity of shallow circular piles in non‐homogeneous and
anisotropic clay is investigated by the lower bound (LB) finite element limit analysis (FELA) …

Three-dimensional lower bound finite element limit analysis of an anisotropic undrained strength criterion using second-order cone programming

B Ukritchon, S Keawsawasvong - Computers and Geotechnics, 2019 - Elsevier
This paper describes a formulation of second-order cone programming for three-
dimensional lower bound finite element limit analysis considering a cross-anisotropic …

Three-dimensional finite-element lower bound solutions for lateral limit load of piles embedded in Cross-Anisotropic Clay Deposits

A Izadi, R Jamshidi Chenari - International Journal of Geomechanics, 2021 - ascelibrary.org
This paper aims to assess the lateral limit load (H) of a pile embedded in cross-anisotropic
clay deposits by a three-dimensional (3D) finite-element lower bound theorem in association …