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Principal stress rotation and cyclic shear strength for an elliptical rotation stress path
journal contribution
posted on 2023-05-19, 13:10 authored by Wang, Z, Liu, P, Andrew ChanAndrew Chan, Jin, DBased on the analytical solutions for wave-induced soil response in an unsaturated anisotropic seabed of finite thickness, an elliptical, i.e., noncircular rotation stress path is proven to be a more common state in a soil element with the cyclic shear stresses due to the traveling linear wave. The influence of an elliptical stress path on the characterization of failure strength is analyzed using three new parameters representing the shape, size, and the orientation of the ellipse. A series of cyclic rotational shear tests on the reconstituted specimens of Chinese Fujian Standard Sand have been performed to investigate the effect of elliptical stress path. A strength function in term of failure cycles is derived to quantify the failure strength of a given sand within a seabed subjected to regular wave loading. The results provide a basis for the evaluation of liquefaction potential of seabed but also point to a unique backbone cycle shear strength curve for soil under principal stress rotation.
History
Publication title
Marine Georesources and GeotechnologyVolume
35Issue
8Pagination
1077-1085ISSN
1064-119XDepartment/School
School of EngineeringPublisher
Taylor & Francis Inc.Place of publication
United StatesRights statement
Copyright 2017 Taylor & FrancisRepository Status
- Restricted