الفهرس 
DESIGN SEQUENCEOnly 14 pages are availabe for public view
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Abstract
he main objective of the thesis is to develop a comprehensive and
state of the art design tool for studying the problem of on-bottom stability
of subsea pipeline resting on the seabed. The thesis includes an extensive
review of the published work dealing with the various major parameters
related to the on-bottom stability of subsea pipelines.
The thesis introduces a method for calculating and estimating the
hydrodynamic forces acting on the subsea pipeline utilizing empirical
formulae which are based on the latest experimental and test programs.
The thesis also introduces a method for calculating the soil resistance
accounting for the considerable increase due to embedment resulting
from pipeline oscillations during severe environmental conditions.
The thesis proposes a detailed static design procedure considering the
introduced hydrodynamic force calculations and the pipe/ soil interaction
model. The obtained results show that the proposed static design
approach has eliminated a considerable part of the conservatism inherent
in the traditional design approach thus leading to huge savings.
Finally, the thesis proposes a detailed dynamic design approach
considering the variations along the pipeline route. The dynamic design
approach further increases the cost savings obtained by the proposed
static design approach in various cases which are identified in the thesis