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Bearing Capacity of Foundations with Inclined Groundwater Seepage

Kumar, Jyant / Chakraborty, Debarghya

Abstract

The ultimate bearing capacity of strip foundations in the presence of inclined groundwater flow, considering both upward and downward flow directions, has been determined by using the lower bound finite-element limit analysis. A numerical solution has been generated for both smooth and rough footings placed on frictional soils. A correction factor ( $f_{γ}$ ), which needs to be multiplied with the $N_{γ}$ -term, has been computed to account for groundwater seepage. The variation of $f_{γ}$ has been obtained as a function of the hydraulic gradient ( $i$ ) for various inclinations of groundwater flow. For a given magnitude of $i$ , there exists a certain critical inclination of the flow for which the value of $f_{γ}$ is minimized. With an upward flow, for all flow inclinations, the magnitude of $f_{γ}$ always reduces with an increase in the value of $i$ . An example has also been provided to illustrate the application of the obtained results when designing foundations in the presence of groundwater seepage.

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Bearing Capacity of Foundations with Inclined Groundwater Seepage

Kumar, Jyant / Chakraborty, Debarghya

Abstract

The ultimate bearing capacity of strip foundations in the presence of inclined groundwater flow, considering both upward and downward flow directions, has been determined by using the lower bound finite-element limit analysis. A numerical solution has been generated for both smooth and rough footings placed on frictional soils. A correction factor ( $f_{γ}$ ), which needs to be multiplied with the $N_{γ}$ -term, has been computed to account for groundwater seepage. The variation of $f_{γ}$ has been obtained as a function of the hydraulic gradient ( $i$ ) for various inclinations of groundwater flow. For a given magnitude of $i$ , there exists a certain critical inclination of the flow for which the value of $f_{γ}$ is minimized. With an upward flow, for all flow inclinations, the magnitude of $f_{γ}$ always reduces with an increase in the value of $i$ . An example has also been provided to illustrate the application of the obtained results when designing foundations in the presence of groundwater seepage.

Bearing Capacity of Foundations with Inclined Groundwater Seepage

Kumar, Jyant / Chakraborty, Debarghya

Abstract

The ultimate bearing capacity of strip foundations in the presence of inclined groundwater flow, considering both upward and downward flow directions, has been determined by using the lower bound finite-element limit analysis. A numerical solution has been generated for both smooth and rough footings placed on frictional soils. A correction factor ( $f_{γ}$ ), which needs to be multiplied with the $N_{γ}$ -term, has been computed to account for groundwater seepage. The variation of $f_{γ}$ has been obtained as a function of the hydraulic gradient ( $i$ ) for various inclinations of groundwater flow. For a given magnitude of $i$ , there exists a certain critical inclination of the flow for which the value of $f_{γ}$ is minimized. With an upward flow, for all flow inclinations, the magnitude of $f_{γ}$ always reduces with an increase in the value of $i$ . An example has also been provided to illustrate the application of the obtained results when designing foundations in the presence of groundwater seepage.

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Title:

Bearing Capacity of Foundations with Inclined Groundwater Seepage

Contributors:

Kumar, Jyant (author) / Chakraborty, Debarghya (author)

Published in:

International Journal of Geomechanics ; 13 ; 611-624

Publication date:

2012-08-09

Size:

142013-01-01 pages

ISSN:

1532-3641 , 1943-5622

DOI:

https://doi.org/10.1061/(ASCE)GM.1943-5622.0000241

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

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