Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 5American Society of Mechanical Engineers, 1988 - Arctic regions |
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Page 270
... thickness ( tp ) , rise ness ( tr ) and pipeline concrete thickness ( t pipeline thickness can be calculated from t stress formulation in restrained conditio considering internal corrosion , if any . Ri thickness can be evaluated on the ...
... thickness ( tp ) , rise ness ( tr ) and pipeline concrete thickness ( t pipeline thickness can be calculated from t stress formulation in restrained conditio considering internal corrosion , if any . Ri thickness can be evaluated on the ...
Page 272
... Thickness As riser if the he flexural rigidity of riser increases with riser thickness . The minimum wall thickness of the four le risers , as shown in Table 2 , is increased by a in amount to study the effect of increased wall ness on ...
... Thickness As riser if the he flexural rigidity of riser increases with riser thickness . The minimum wall thickness of the four le risers , as shown in Table 2 , is increased by a in amount to study the effect of increased wall ness on ...
Page 273
... thickness ( mm ) 9.5 12.7 12.7 15.9 Riser wall thickness ( mm ) 12.7 15.9 15.9 19.1 Concrete thickness ( mm ) 25 25 33 45 Submerged weight of pipeline ( N / m ) 506.0 697.3 840.5 1443.6 Table 3. Effect of riser force Pipe Model 1 dia ...
... thickness ( mm ) 9.5 12.7 12.7 15.9 Riser wall thickness ( mm ) 12.7 15.9 15.9 19.1 Concrete thickness ( mm ) 25 25 33 45 Submerged weight of pipeline ( N / m ) 506.0 697.3 840.5 1443.6 Table 3. Effect of riser force Pipe Model 1 dia ...
Contents
Model Tests | 3 |
B Bryndum V Jacobsen and D T Tsahalis 9 | 21 |
Scour Under Pipelines | 33 |
Copyright | |
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acoustic velocity analysis Arctic Engineering axial behaviour bending bottom boundary layer buckling cable calculated clamp Cobia compression corrosion crack cylinder deflection deformation developed dew point diameter drag drag coefficient effect elastic equation experimental field Figure finite element flow force coefficients free span frequency friction friction welding function hoop stress horizontal Hydraulic hydrodynamic hydrodynamic forces in-line installation irregular waves length lift coefficient lift force liquid load maximum measured mechanical method monitoring movement nodal analysis operating parameters phase pipe displacement pipe material pipeline predicted pressure procedure ratio response riser roughness SCADA scour sea bed sea floor seabed shown simulated slug soil steady current steel storm strain strain gauges stress structural submarine pipelines surface Technology temperature tion Turning Bands underwater values variation vertical vortex shedding water depth welding zone