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Abstract

Based on the analytical solutions for wave-induced soil response in an unsaturated anisotropic seabed offinite thickness, an elliptical, i.e., noncircular rotation stress path is proven to be a more common state ina soil element with the cyclic shear stresses due to the traveling linear wave. The influence of an ellipticalstress path on the characterization of failure strength is analyzed using three new parametersrepresenting the shape, size, and the orientation of the ellipse. A series of cyclic rotational shear tests onthe reconstituted specimens of Chinese Fujian Standard Sand have been performed to investigate theeffect of elliptical stress path. A strength function in term of failure cycles is derived to quantify the failurestrength of a given sand within a seabed subjected to regular wave loading. The results provide a basisfor the evaluation of liquefaction potential of seabed but also point to a unique backbone cycle shearstrength curve for soil under principal stress rotation.

Item Type:	Article
Authors/Creators:	Wang, Z and Liu, P and Chan, A and Jin, D
Keywords:	elliptical rotation stress path, failure strength, principal stress rotation, wave loading
Journal or Publication Title:	Marine Georesources and Geotechnology
Publisher:	Taylor & Francis Inc.
ISSN:	1064-119X
DOI / ID Number:	10.1080/1064119X.2017.1290167
Copyright Information:	Copyright 2017 Taylor & Francis
Related URLs:	Google Scholar: Chan, A UTAS Profile: Chan, A
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