Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 9, Part 5American Society of Mechanical Engineers, 1990 - Arctic regions |
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Page 185
... scour disturbance in sand as indi- cated by the high values of R ( R > 20 ) . Where clay overlies sand there is little potential for subscour dis- turbance when the depth of scour is near the clay / sand interface . There is a high ...
... scour disturbance in sand as indi- cated by the high values of R ( R > 20 ) . Where clay overlies sand there is little potential for subscour dis- turbance when the depth of scour is near the clay / sand interface . There is a high ...
Page 186
... scour is again incremented and the calcula- tions are all repeated . This process con- tinues until the scour simulation is term- inated . Termination can be specified to occur at a given depth or length of scour , or when the kinetic ...
... scour is again incremented and the calcula- tions are all repeated . This process con- tinues until the scour simulation is term- inated . Termination can be specified to occur at a given depth or length of scour , or when the kinetic ...
Page 187
... scour provides the best available validation of the model at this time . Shearer et al . ( 1986 ) document the scour track made by El in some detail . The scour begins at a water depth of 26.7 m and extends approximately 13 km to a ...
... scour provides the best available validation of the model at this time . Shearer et al . ( 1986 ) document the scour track made by El in some detail . The scour begins at a water depth of 26.7 m and extends approximately 13 km to a ...
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addition analysis applied approach assessment assumed bending calculations caused considered CONTINUE corrosion crack damage deformation depth described diameter direction displacement distribution effect energy Engineering ensemble equations factors failure field Figure flow force fracture function given hole included increase initial installation internal layer length limit load material maximum mean measured mechanical method mode movement obtained occurred Offshore operation parameters pipe pipeline plastic plate platform position predicted presented pressure probability problem procedure properties radial range reduced relative reliability resistance response safety scaling scour seabed shown shows simulated soil solution span stability steel strain strength stress structure subsea surface Table term thickness toughness tracers tube uncertainty values valve variables wall wave weight weld