Abstract
The paper pertains to the analysis of piles embedded in liquefiable soils to predict its’ critical buckling load under partial to full loss of lateral support over a portion of the pile length. The analysis is based on extension of Mindlin solution for a point load acting inside a semi infinite elastic half space. Degenerated solutions obtained by using the developed method compares very well with reported results. Parametric studies showed that the depth of liquefiable soil, degradation of soil strength on liquefaction, slenderness ratio, pile stiffness factor and end conditions have significant influence on the buckling behavior of the piles.
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Abbreviations
- d :
-
Width or diameter of the pile
- E ns, E ls and E p :
-
Young’s modulus of non-liquefied soil, liquefied soil, and pile
- H 0, H f :
-
Lateral forces at top and bottom of beam
- H c :
-
Critical depth
- I P :
-
Moment of inertia of pile
- I s :
-
Displacement influence coefficients
- L :
-
Length of the pile
- M :
-
Bending moment
- P, P 1, ...:
-
Axial loads
- P cr, P eu and P * :
-
Buckling load, Euler buckling load, and dimensionless buckling load
- (P cr)le :
-
Buckling load of liquefied soil
- L *, R, R * and D * :
-
Ratio of L le/L, (P cr)/P eu, (P cr)le/P cr and E ls/E ns
- p, p s :
-
Normal and shear stresses on pile
- δ:
-
L/n
- ρs, ρp :
-
Soil and pile displacements
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Shanker, K., Basudhar, P.K. & Patra, N.R. Buckling of Piles under Liquefied Soil Conditions. Geotech Geol Eng 25, 303–313 (2007). https://doi.org/10.1007/s10706-006-9111-6
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DOI: https://doi.org/10.1007/s10706-006-9111-6