Rajesh, S and Ganesh, R (2022) Analytical Solution for the Action of Seismic Active Earth Pressures of Unsaturated Backfills Behind Inclined Walls. In: 7th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics, 12-15 Jul 2021, Bangalore, pp. 17-31.
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Numerous studies are available to compute the seismic active earth pressures on inclined walls supporting fully dry or saturated soil backfills. However, in practice, unsaturated compacted soils or naturally formed soils are usually found behind earth retention structures. In this study, an analytical solution has been established for determining the magnitude and the location of the line of action of the total seismic active earth thrust, as well as its distribution against inclined walls with unsaturated backfills considering the influence of soil types, groundwater table positions, wall inclinations, and surcharge pressures on the ground surface. The analysis was performed based on the assumption of the planar failure surface within the framework of limit-equilibrium approach. The closed-form effective stress function coupled with Mohr�Coulomb failure criterion was adopted to evaluate the shear strength of unsaturated soils while the effect of quasi-static seismic inertial forces was included from the pseudostatic approach. With the help of the proposed method, the influence of different parameters on the magnitude and the location of the line of action of the total seismic active earth thrust has been studied. The present results showed considerable nonlinearity in the distributions of seismic active earth pressures of unsaturated soils. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
| Item Type: | Conference Paper |
|---|---|
| Publication: | Lecture Notes in Civil Engineering |
| Publisher: | Springer Science and Business Media Deutschland GmbH |
| Additional Information: | The copyright for this article belongs to Springer Science and Business Media Deutschland GmbH |
| Keywords: | Groundwater; Pressure distribution; Retaining walls; Shear flow; Shear strength; Soils, Dry soil; Earth thrust; Inclined walls; Lines of action; Saturated soils; Seismic active pressure; Seismic active-earth pressures; Soil backfill; Unsaturated soil; Unsaturated structures, Seismology |
| Department/Centre: | Division of Mechanical Sciences > Civil Engineering |
| Date Deposited: | 07 Feb 2022 12:13 |
| Last Modified: | 07 Feb 2022 12:13 |
| URI: | http://eprints.iisc.ac.in/id/eprint/71248 |
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