Undrained Bearing Capacity of Strip Footings Placed Adjacent to Two-Layered Slopes
Publication: International Journal of Geomechanics
Volume 19, Issue 8
Abstract
This study used adaptive finite-element limit analysis (AFELA) to calculate the undrained bearing capacity of strip footings placed adjacent to two-layered slopes. Both the upper bound (UB) and the lower bound (LB) of the dimensionless undrained bearing-capacity factor Ns were obtained, with the relative errors being within 6%. The results are presented in the form of design tables and charts for a wide range of parameters. Meanwhile, the effects of parameters on Ns were also investigated, such as the undrained shear stress ratio cu1/cu2, the dimensionless strength ratio cu1/(γB), the normalized thickness of the top clay layer D/B, the slope height H/B, and the slope angle β. In addition, comparisons with previous studies were also conducted, and the failure mechanisms were determined.
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Acknowledgments
The authors acknowledge the financial support of the China Postdoctoral Science Foundation (140050006) and the National Natural Science Foundation of China (51478178 and 51608540), which made the work presented in this article possible.
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Published In
International Journal of Geomechanics
Volume 19 • Issue 8 • August 2019
Copyright
© 2019 American Society of Civil Engineers.
History
Received: Aug 8, 2018
Accepted: Mar 18, 2019
Published online: May 21, 2019
Published in print: Aug 1, 2019
Discussion open until: Oct 21, 2019
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