Coupled Dynamic Analysis for the Riser-Conductor of Deepwater Surface BOP Drilling System

Table 2

Soil parameters.

	Clay 1	Clay 2	Clay 3		Sand 1	Sand 2	Sand 3
Undrained shear strength/kPa	20.0	60.0	60.0	Angle of internal friction/degree	30.0	39.5	39.5
Submerged unit weight/(kN/m^3)	7.0	7.0	8.0	Submerged unit weight/(kN/m^3)	8.5	8.5	10.0