Semianalytical Solution for Earth Pressure of Narrow Granular Backfill with a Log-Spiral Failure Surface behind Retaining Walls under Translational Mode
Publication: International Journal of Geomechanics
Volume 23, Issue 9
Abstract
A novel semianalytical method is proposed to estimate the earth pressure exerted on rigid retaining walls supporting a narrow granular backfill in this study, which is based on the assumption of a log-spiral failure surface. This study adopts the differential element limit equilibrium method, coupled with the stress analysis considering the deflection of principal stress trajectory, to obtain the stress distribution against retaining walls. The resultant earth pressure, the point of application, and earth pressure distribution can be obtained by the finite-difference method. The method proposed in this study is verified via comparisons with model test results, centrifuge test results, and discrete-element method results. Furthermore, a series of extensive parameter studies are conducted to investigate the effect of backfill width and interface friction on resultant earth pressure, the point of application, and earth pressure distribution for further studies.
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Acknowledgments
We gratefully acknowledge financial support from the National Natural Science Foundation of China (NSFC Grant Nos. 41727802 and 41977216) and the Natural Science Foundation of Shanghai (Grant No. 22ZR1430800).
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Published In
International Journal of Geomechanics
Volume 23 • Issue 9 • September 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Aug 20, 2022
Accepted: Apr 3, 2023
Published online: Jul 5, 2023
Published in print: Sep 1, 2023
Discussion open until: Dec 5, 2023
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