Seismic Bearing Capacity of a Mounded Foundation Near a Down-Hill Slope by Pseudo-Static Analysis

Seismic Bearing Capacity of a Rigid Footing Adjacent to a Cohesionless Slope

“…Their study focused on examining the validity of the methodology in deriving bearing capacity of footings placed at various locations on the crest of the slope, considering the eŠect of inertial force induced by horizontal ground accelerations. Sawada et al (1994) concluded that their method generated comparable results with the existing methods, such as the slice method and the stress characteristic method, and the seismic inertial force has a signiˆcant in‰uence on the seismic bearing capacity. However, generalized expressions of the analytical values of seismic bearing capacity and correction factors were not reported.…”

“…However, as discussed by Soubra (1994), the values of N g obtained by Richard et al (1993) are signiˆcantly greater than those obtained using the upper bound method especially for the cases of q＝309and 409(q: internal friction angle of soils). Sawada et al (1994) derived seismic bearing capacity of a footing situated on the crest of slopes with various slope angles using the upper bound technique in conjunction with a logarithmic spiral failure mechanism. Their study focused on examining the validity of the methodology in deriving bearing capacity of footings placed at various locations on the crest of the slope, considering the eŠect of inertial force induced by horizontal ground accelerations.…”

Effects of Horizontal and Vertical Seismic Loads on the Bearing Capacity of a Surface Footing Adjacent to a Slope

“…(1), to account for various eŠects. A correction factor to account for the bearing capacity decreases when the footing is located near to a slope can be expressed as functions of the distance between the toe of the footing and the crest of the slope (or the`setback' from the slope), as those proposed by Kusakabe et al (1981), Sawada et al (1994), and Huang and Kang (2008a). Discussions regarding the in‰uence of a setback to the bearing capacity of footing situated on a slope is beyond the scope of the present study.…”

“…Conventional analytical solutions for the seismic bearing capacity of a footing have been derived mainly for rigid strip footings placed on the surface of a level ground (Sarma and Choudhury and Subba Rao, 2005). Studies on the seismic bearing capacity for a rigid surface footing adjacent to a slope subjected to seismic loadings are very limited (Sawada et al, 1994; Choudury and Subba Rao, 2006; Huang and Kang, 2008). The importance of the seismic bearing capacity of a footing situated on a slope has been noted in the post-earthquake investigation of some severely damaged soil retaining walls on hillsides (Huang, 2000;Kato, 2001;Fang et al, 2003;Huang and Chen, 2004;Huang, 2005).…”

“…The bearing capacity of footings adjacent to a slope has been studied in countries with mountainous terrains (Kusakabe et al, 1981;Sawada et al, 1994;. Conventional analytical solutions for the seismic bearing capacity of a footing have been derived mainly for rigid strip footings placed on the surface of a level ground (Sarma and Choudhury and Subba Rao, 2005).…”