Stability Charts for Limiting Horizontal Normal Pressure on Cohesive–Frictional Backfill for Deep Contiguous I-Shaped Piled Walls

Tran, DT and Keawsawasvong, S and Kumar, J (2023) Stability Charts for Limiting Horizontal Normal Pressure on Cohesive–Frictional Backfill for Deep Contiguous I-Shaped Piled Walls. In: International Journal of Geosynthetics and Ground Engineering, 9 (4).

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Abstract

Two-dimensional plane strain finite element limit analysis (FELA) has been carried out to determine the limiting earth pressure behind soil gaps in a contiguous I-shaped piled wall. The I-shaped pile has been modeled as a rigid material, while the soil mass is assumed to obey an associated flow rule and the Mohr–Coulomb yield criterion. The effects of the soil friction angle (ϕ) , adhesion factor (m) , and the piles spacing to its flange width ratio (S/ B) on the limiting lateral earth pressure coefficient F/cB have been investigated and discussed; here F is the total lateral thrust offered by the pile per unit length and c implies soil cohesion. The results have been found to compare quite well with the existing experimental and numerical data. The failure mechanisms have also been examined. An increase in the value of ϕ as well as m leads to a continuous increase in the magnitude of F/cB . On the other hand, the magnitude of F/cB decreases continuously with an increase in S/ B . Design charts for the limiting non-dimensional horizontal earth resistance (F/cB) have been proposed for practical use and design calculations.

Item Type:	Journal Article
Publication:	International Journal of Geosynthetics and Ground Engineering
Publisher:	Springer Science and Business Media Deutschland GmbH
Additional Information:	The copyright for this article belongs to the Springer Science and Business Media Deutschland GmbH.
Keywords:	Contiguous piled wall; Finite elements limit analysis; I-shaped pile; Lateral earth resistance; Limit analysis
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	28 Jul 2023 06:18
Last Modified:	28 Jul 2023 06:18
URI:	https://eprints.iisc.ac.in/id/eprint/82565

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