Page 80 - Pipelines and Risers
P. 80
BucWing/Collapse of Deepwater Metallic Pipes 53
Final expression for moment capacity (case 1)
Substituting the values for otem and o,,, into the equation gives the final expression for the
bending moment capacity for case 1:
(3.45)
(3.46)
The equation is valid for the following range of hoop stress and axial force:
--<a,<L
1
m-
c@,h
and
(3.47)
CASE 2 - CORROSION IN COMPRESSION AND SOME IN TENSION
Final expression for case 2:
(3.48)
(3.49)
k, = 1 -[ 1 - 1 + $1 k, = 1 -( 1 -!XI + $7
[
!
I
