A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Seismic Bearing Capacity of Shallow Embedded Foundations on a Sloping Ground Surface
AbstractBy using the lower-bound theorem of the limit analysis in conjunction with finite elements and nonlinear optimization, bearing-capacity factors, Nc and Nγq, with an inclusion of pseudostatic horizontal seismic body forces, have been determined for a shallow embedded horizontal strip footing placed on sloping ground surface. The variation of Nc and Nγq with changes in slope angle (β) for different values of seismic acceleration coefficient (kh) has been obtained. The analysis reveals that irrespective of ground inclination and the embedment depth of the footing, the factors Nc and Nγq decrease quite considerably with an increase in kh. As compared with Nc, the factor Nγq is affected more extensively with changes in kh and β. Unlike most of the results reported in literature for the seismic case, the present computational results take into account the shear resistance of soil mass above the footing level. An increase in the depth of the embedment leads to an increase in the magnitudes of both Nc and Nγq.
Seismic Bearing Capacity of Shallow Embedded Foundations on a Sloping Ground Surface
AbstractBy using the lower-bound theorem of the limit analysis in conjunction with finite elements and nonlinear optimization, bearing-capacity factors, Nc and Nγq, with an inclusion of pseudostatic horizontal seismic body forces, have been determined for a shallow embedded horizontal strip footing placed on sloping ground surface. The variation of Nc and Nγq with changes in slope angle (β) for different values of seismic acceleration coefficient (kh) has been obtained. The analysis reveals that irrespective of ground inclination and the embedment depth of the footing, the factors Nc and Nγq decrease quite considerably with an increase in kh. As compared with Nc, the factor Nγq is affected more extensively with changes in kh and β. Unlike most of the results reported in literature for the seismic case, the present computational results take into account the shear resistance of soil mass above the footing level. An increase in the depth of the embedment leads to an increase in the magnitudes of both Nc and Nγq.
Seismic Bearing Capacity of Shallow Embedded Foundations on a Sloping Ground Surface
Kumar, Jyant (author) / Chakraborty, Debarghya
2015
Article (Journal)
English
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