Soil mechanics and plastic analysis or limit design

DC Drucker, W Prager - Quarterly of applied mathematics, 1952 - ams.org
DC Drucker, W Prager
Quarterly of applied mathematics, 1952ams.org
1. Introduction. Problems of soil mechanics involving stability of slopes, bearing capacity of
foundation slabs and pressures on retaining walls are often treated as problems of plasticity.
The soil is replaced by an idealized material which behaves elastically up to some state of
stress at which slip or yielding occurs. The shear stress required for simple slip is often
considered to depend upon the cohesion and linearly upon the normal pressure on the slip
surface. In more complete plane investigations an extended Coulomb's rule is used,**(Fig …
1. Introduction. Problems of soil mechanics involving stability of slopes, bearing capacity of foundation slabs and pressures on retaining walls are often treated as problems of plasticity. The soil is replaced by an idealized material which behaves elastically up to some state of stress at which slip or yielding occurs. The shear stress required for simple slip is often considered to depend upon the cohesion and linearly upon the normal pressure on the slip surface. In more complete plane investigations an extended Coulomb's rule is used,**(Fig. 1)
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