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GEO5

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Analysis for Coarse-Grained Soils

For dense coarse-grained soils (e.g. ice soil) the stress-deformation (settlement) relationship is usually assumed as "elastic", i.e. the stress exponent j is equal to one. Thus for j = 1 and the reference stress σr = 100 kPa the resulting settlement equals to the sum of partial settlements of individual layers:

where:

σz,i

-

vertical component of incremental stress (e.g. stress due to structure surcharge) inducing layer compression -  i.e. change of effective stress

mi

-

Janbu modulus in the ith layer

hi

-

thickness of the ith layer