On-line contextual Help

/

Settlement 

GEO5

Geotechnical software

« Back to Help

Analysis for coarse-grained soils after Janbu

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



Language: english