With time, a concrete gravity platform structure will induce considerable deformation within the supporting soil. The casing, particularly the marine conductor, will have, at least in part, to follow the displacements that take place in the soil.
The marine conductor and possibly the conductor casing therefore have to be designed such that the loads caused by soil settlement shear forces does not cause yield to occur. Casing capacity is not affected by this environment.
Modelling of these shear forces is generally performed by computer analysis.
In their analysis, such programs take . . .