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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analytical Solution for the Action of Seismic Active Earth Pressures of Unsaturated Backfills Behind Inclined Walls
https://orcid.org/http://orcid.org/0000-0002-1108-3628
https://orcid.org/http://orcid.org/0000-0001-6495-7424
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.
Analytical Solution for the Action of Seismic Active Earth Pressures of Unsaturated Backfills Behind Inclined Walls
https://orcid.org/http://orcid.org/0000-0002-1108-3628
https://orcid.org/http://orcid.org/0000-0001-6495-7424
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.
Analytical Solution for the Action of Seismic Active Earth Pressures of Unsaturated Backfills Behind Inclined Walls
https://orcid.org/http://orcid.org/0000-0002-1108-3628
https://orcid.org/http://orcid.org/0000-0001-6495-7424
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.
Analytical Solution for the Action of Seismic Active Earth Pressures of Unsaturated Backfills Behind Inclined Walls
Lecture Notes in Civil Engineering
Sitharam, T. G. (Herausgeber:in) / Kolathayar, Sreevalsa (Herausgeber:in) / Jakka, Ravi (Herausgeber:in) / Rajesh, S. (Autor:in) / Ganesh, R. (Autor:in)
04.01.2022
15 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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