TY - BOOK
T1 - Local scour and scouring protection of drilling platforms in the arctic sea environment
AU - Rytkönen, Jorma
PY - 1983
Y1 - 1983
N2 - Placing an obstruction, such as for instance an
artificial island platform, on the sea bottom will cause
a disturbation in the bottom equilibrium. As a result a
local scour-deposit phenomenon may occur, which
especially in sandbottoms can significantly reduce the
stability of platform and cause nonuniform stress
distributions under the platform base. An increase of
stresses over the design value may, in extreme cases,
cause the failure of a whole structure. Being aware of
the scouring phenomenon and undertaking the scouring
protection measures already before the platform
installation is in general more feasible than to try to
repair damages afterwards. In the paper the local
scouring due to waves and currents near the toe of
gravity platforms is described. The description
concentrates mainly on the artificial gravity platforms
in the shallow waters (water depth ~ 10 -30 m). Scouring
phenomenon and scouring protection measures are described
on the basis of the available literature on the subject.
Moreover some speculations concerning the model testing
procedures are presented, too.
AB - Placing an obstruction, such as for instance an
artificial island platform, on the sea bottom will cause
a disturbation in the bottom equilibrium. As a result a
local scour-deposit phenomenon may occur, which
especially in sandbottoms can significantly reduce the
stability of platform and cause nonuniform stress
distributions under the platform base. An increase of
stresses over the design value may, in extreme cases,
cause the failure of a whole structure. Being aware of
the scouring phenomenon and undertaking the scouring
protection measures already before the platform
installation is in general more feasible than to try to
repair damages afterwards. In the paper the local
scouring due to waves and currents near the toe of
gravity platforms is described. The description
concentrates mainly on the artificial gravity platforms
in the shallow waters (water depth ~ 10 -30 m). Scouring
phenomenon and scouring protection measures are described
on the basis of the available literature on the subject.
Moreover some speculations concerning the model testing
procedures are presented, too.
M3 - Report
SN - 951-38-1894-2
T3 - Valtion teknillinen tutkimuskeskus. Tiedotteita
BT - Local scour and scouring protection of drilling platforms in the arctic sea environment
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -