Analysis for Sands and Silts
For sands and silts the stress exponent j receives the value around 0,5, for the reference stress σr = 100 kPa the resulting settlement equals to the sum of partial settlements of individual layers. It can be derived from the following formula:
where: | σor,i | vertical component of geostatic stress in the middle of ith layer |
σz,i | vertical component of incremental stress (e.g. stress due to structure surcharge) inducing layer compression | |
mi | Janbu modulus in the ith layer | |
hi | thickness of the ith layer |