Applications of Limit Plasticity in Soil Mechanics

by W. D. Liam Finn,


Serial Information: Journal of the Soil Mechanics and Foundations Division, 1967, Vol. 93, Issue 5, Pg. 101-120


Document Type: Journal Paper

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Abstract:

A plane strain formulation of Drucker's perfectly plastic theory for soil is presented. Upper and lower-bound solutions to problems involving the stability of slopes and foundations and the pressures against retaining structures are obtained. The lower-bound solutions are obtained from arbitrary equilibrium states; the upper-bound solutions from kinematic analyses using the plastic stress-strain relations after yield. The results indicate that solutions based on conventional slipsurface analysis may be unsafe. The upper and lower-bound solutions are useful guides in making design decisions.



Subject Headings: Soil mechanics | Plasticity | Retaining structures | Plastic analysis | Soil stress | Plastics | Slope stability | Plane strain | Foundations

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