Seismic Active Earth Pressure on Narrow Backfill Retaining Walls Considering Strain Localization

Ahmed, Shaik Moin and Basha, B. Munwar (2021) Seismic Active Earth Pressure on Narrow Backfill Retaining Walls Considering Strain Localization. Indian Geotechnical Journal. ISSN 0971-9555

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Abstract

The evaluation of seismic active earth pressure acting on narrow backfilled retaining walls is more essential during earthquake loading to ascertain safety and economical design. This paper proposes an analytical procedure to evaluate seismic active earth pressure for narrow backfill width retaining walls using the limit equilibrium method under earthquake loading. The existence of rock behind the retaining wall that affects the size and shape of the failure wedge in narrow backfill soil is considered. The study also accounts for the strain softening behavior under earthquake loading by considering the change in shear strength due to the reduction in friction angle from peak to residual along the bilinear failure slip surfaces in backfill soil. The formation of multiple failure surfaces due to multiple failure wedges in the narrow backfill soil is also considered. The proposed values of seismic active earth pressure are validated by comparing the obtained results with the earlier studies. The influence of backfill soil friction angle, dilatancy angle, interface friction angle between the retaining wall and backfill soil, interface friction angle between the rock face and backfill soil, backfill slope angle, rock-face slope angle, and the distance of constraint rock face boundary from retaining wall on the magnitude of seismic active earth pressure and its point of application are presented.

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IITH Creators:
IITH CreatorsORCiD
Ahmed, Shaik MoinUNSPECIFIED
Basha, B. MunwarUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Analytical procedure; Earthquake loadings; Interface friction angle; Limit equilibrium methods; Point of application; Seismic active-earth pressures; Soil friction angle; Strain localizations
Subjects: Civil Engineering
Divisions: Department of Civil Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 31 Jul 2021 06:41
Last Modified: 31 Jul 2021 06:41
URI: http://raiith.iith.ac.in/id/eprint/8595
Publisher URL: http://doi.org/10.1007/s40098-021-00514-x
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