Civil Engineering Reference
In-Depth Information
Figure 15.1
Examples of one-dimensional consolidation.
Figure 15.2
One-dimensional consolidation.
From the definition of the coefficient of compressibility
m
v
given by Eq. (8.9),
δσ
δ
=−
δ
h
m
v
z
(15.1)
The theory requires that
m
v
remains constant and so it is valid only for relatively small
increments of stress. Since the soil grains are incompressible an equation of continuity
relates the change of volume of the element to the change of flow through it:
A
δ
h
=−
δ
q
δ
t
(15.2)
