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Seismic Bearing Capacity of a Strip Footing Situated on Soil Slope Using a Non-Associated Flow Rule in Lower Bound Limit Analysis
In this paper, seismic bearing capacity of a surface strip footing, placed at the edge of a soil slope is computed by using the lower bound finite elements limit analysis technique. Non-associated flow rule is assumed to be applicable for soil mass to consider the effect of dilation on the bearing capacity of footing. The variation of bearing capacity factors Nc and Nγ with slope angle (β), soil friction angle (ϕ), dilative coefficient (η), and horizontal seismic acceleration coefficient (kh) are presented graphically. It is observed that the value of Nc and Nγ reduce with an increase in the value of slope angle and horizontal seismic acceleration coefficient. Whereas, with an increase in the magnitude of ϕ, and η, Nc and Nγ increase quite considerably. The effect is found to be more pronounced in the case of Nγ. The stress contours during the yielding of soil are also plotted for few cases.
Seismic Bearing Capacity of a Strip Footing Situated on Soil Slope Using a Non-Associated Flow Rule in Lower Bound Limit Analysis
In this paper, seismic bearing capacity of a surface strip footing, placed at the edge of a soil slope is computed by using the lower bound finite elements limit analysis technique. Non-associated flow rule is assumed to be applicable for soil mass to consider the effect of dilation on the bearing capacity of footing. The variation of bearing capacity factors Nc and Nγ with slope angle (β), soil friction angle (ϕ), dilative coefficient (η), and horizontal seismic acceleration coefficient (kh) are presented graphically. It is observed that the value of Nc and Nγ reduce with an increase in the value of slope angle and horizontal seismic acceleration coefficient. Whereas, with an increase in the magnitude of ϕ, and η, Nc and Nγ increase quite considerably. The effect is found to be more pronounced in the case of Nγ. The stress contours during the yielding of soil are also plotted for few cases.
Seismic Bearing Capacity of a Strip Footing Situated on Soil Slope Using a Non-Associated Flow Rule in Lower Bound Limit Analysis
Halder, K. (author) / Chakraborty, D. (author) / Dash, S. K. (author)
Geotechnical Earthquake Engineering and Soil Dynamics V ; 2018 ; Austin, Texas
2018-06-07
Conference paper
Electronic Resource
English
| British Library Conference Proceedings | 2018
| British Library Conference Proceedings | 2019