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

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

“…(4)- (6) with those reported in the literature for some typical conditions, as shown in the columns of kv＝0 in Table 1, and found that the diŠerence in the values of hie derived by Huang and Kang (2008b) and those reported by Zhu (2000) are negligibly small. It should be noted that all theoretical solutions shown in Table 1, except the one for Huang and Kang (2008), were for the case of a level ground (a＝0).…”

“…Figures 3(a)-(c) show good agreement between the analytical values of hie and those of the formulae (Eqs. (4)- (6)), both derived in a previous study (Huang and Kang, 2008b) for q＝309 , 359 , and 409 , respectively. (7) is that the value of`kh/(1-kv)' represents a pseudo-static gravitational state for the soil mass subjected to horizontal and vertical seismic loadings, as used in the Mononobe-Okabe seismic earth pressure theory (Mononobe, 1924;Okabe, 1924).…”

“…In the present study, a small increment of uB, namely DuB＝0.19 , is used. This method is a modiˆed version of that developed by in analyzing a series of loading tests on reinforced and unreinforced sand slopes and is identical to that used in the analytical studies performed by Huang and Kang (2008b). Details of the derivation of the ultimate bearing capacity of a strip footing based on modiˆed Janbu's slice method is described in APPEN-DIX A.…”

“…However, the inter-dependency between`a' and`hie' has never been investigated. The present study is a follow-up of that performed by Huang and Kang (2008b), aiming to extend Eqs. (4)-(6) to account for both horizontal and vertical seismic loadings on the value of hie, and at the same time, to explore the interdependence between`a' and`hie' Although analytical and/or empirical equations, as shown in Eqs.…”

Settlement of footings at the crest of reinforced slopes subjected to toe unloading

“…In the case of level ground (α = 0°), N γ = 56.1 was suggested by Hansen (1970) and the modification factor g γ can be expressed using a generalized form (Huang and Kang 2008):…”