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Radial consolidation analysis of unsaturated soil with vertical drains under various cyclic loadings
Author(s) -
Kim Pyol,
Ri MyongChol,
Ri KilSang,
Rim MyongChol,
Jong SongGuk
Publication year - 2021
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.3213
Subject(s) - consolidation (business) , geotechnical engineering , limiting , pore water pressure , mathematics , materials science , geology , engineering , accounting , business , mechanical engineering
The pivotal aim of this research is to investigate the radial consolidation behavior of unsaturated soil by vertical drains under various cyclic loadings. Based on Fredlund and Hasan's consolidation theory for unsaturated soil, the governing equations for radial consolidation of unsaturated soil are converted into a set of conventional diffusion equations by introducing two new variables. Then, the general solutions for time‐dependent loading are derived under free‐strain condition and equal‐strain condition. Furthermore, the complete analytical solutions are proposed for different cyclic loadings such as haversine cyclic loading, trapezoidal cyclic loading, rectangular cyclic loading, and triangular cyclic loading. The proposed solutions are verified by comparing with those available in the literature as a limiting situation and the results show a quite good agreement. Finally, the effects of different parameters on the radial consolidation of unsaturated soil subjected to various cyclic loadings are graphically presented and examined.