Question

Discuss the accuracy of the 1-D settlement calculation in soil mechanics，you can compare it with 3-D settlement calculation

Answer 1

Settlement Calculation

Settlement of a Single Infinite Layer

The settlement ∆h of a single relatively thin layer. IT can be calculated once the change in voids ratio is known.

where ei and ef are the initial and final voids ratio.

the settlement of a thicker layer can be calculated by dividing the layer into a number of sub layers . This is important in light of the fact that both the underlying and last powerful pressure differ with profundity as do the voids proportion.

The settlement of the soil layer is calculated by calculating the settlement of the individual sub-layers and adding them. In doing this it is accepted that the voids proportion and the compelling pressure are steady all through the sub-layer and equivalent to their qualities at the focal point of the sublayer

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