Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 5American Society of Mechanical Engineers, 1993 - Arctic regions |
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Page 69
... scour induced free spans as the early stage of the lowering process . The model is based on the following : The basic principle is the balance between the bed load within the scour hole and the bed load in the region of the seabed not ...
... scour induced free spans as the early stage of the lowering process . The model is based on the following : The basic principle is the balance between the bed load within the scour hole and the bed load in the region of the seabed not ...
Page 72
... scour hole depth under the pipe in section C at a water depth of 35 m under mean environmental conditions , assuming the pipeline resting at the virgin bedline . From this , it can be desumed that scour induced free spans can develop to ...
... scour hole depth under the pipe in section C at a water depth of 35 m under mean environmental conditions , assuming the pipeline resting at the virgin bedline . From this , it can be desumed that scour induced free spans can develop to ...
Page 314
... scour development compared to the previous years . The exposure and free span lengths had increased , in certain areas with 30 % , from 1989 to 1991. As the length of the free spans was getting close to the allowable length , further ...
... scour development compared to the previous years . The exposure and free span lengths had increased , in certain areas with 30 % , from 1989 to 1991. As the length of the free spans was getting close to the allowable length , further ...
Contents
OFFSHORE | 1 |
Mechanical Properties of | 22 |
Ice Engineering | 80 |
Copyright | |
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Almen strip anticorrosion coating applied assessment axial force backfill behaviour bending Bruschi buckle buckle lengths burst pressure calculated cathodic protection circumferential coefficients compression concrete coating configuration crack propagation criteria curvature deformation depth developed diameter directional drill disbonded displacement ditch effect Engineering equations factor failure fatigue field joints flow fracture free spans gas pipeline grit blasting hoop stress hydrodynamic increase installation interaction layer length load longitudinal material maximum measured mechanical metal loss monitoring NACE niobium Offshore operating OTDR overcoating parameters pile pipeline pits plastic Polypropylene predicted resistance response sand scour seabed self-lowering sensor settlement shear shear strength shown in Figure simulated Snamprogetti soil solution specimens Statoil steel stiffness strain strain gauges strength stress stress concentration structural surface temperature thickness TMCP uneven seabed values velocity wave weld Zeepipe zone