Environmental Engineering Reference
In-Depth Information
(a)
(b)
Figure 11.14
Comparisons of failure envelope and corresponding stress point envelope:
(a) extended Mohr-Coulomb failure envelope; (b) extended stress point envelope.
The relationship between the s
lop
e angles
φ
and
ψ
is
obtained by equating the lengths
TC
computed from trian-
gles
TBC
and
TAC
as follows:
The
q
f
variable can be canceled to give
tan
ψ
=
sin
φ
(11.21)
q
f
tan
ψ
=
q
f
sin
φ
The relationship between the cohesion intercept
c
and the
ordinate intercept
d
can be computed by considering the
(11.20)
Search WWH ::
Custom Search