Pore Pressure Parameters and Cyclic Resistance Under Generalized Loading

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  • A systematic study was undertaken to assess the effects of the magnitude and nature of principal stress rotation on the cyclic resistance of sands. Test results over a range of α_σc and 〖∆α〗_σ indicate that that the weakest cyclic resistance at a given initial α_σc always correspond to 45° stress rotation, and for a given magnitude of stress rotation (fixed ∆α_σ) the liquefaction resistance generally depends on the magnitude of the torsional shear stress applied on the horizontal plane.A limited number of experiments were carried out to investigate the applicability of the Skempton & Henkel pore pressure formulations for generalized 3D initial stress states. Skempton’s pore pressure parameter formulations for isotropic material have been extended to cross anisotropic materials, and it was shown that the principles are applicable even for cross anisotropic materials under generalized initial loading conditions.

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  • Copyright © 2013 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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  • 2013


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