Statistical Value of Soil Dynamic Parameters in Bohai Seafloor

Abstract

Dynamic shear modulus ratios and damping ratios of soil are the parameter of indicating dynamic nonlinearity of soil, and the necessary parameter of seismic site analysis. The 372 pairs of soil samples’ dynamic nonlinear parameters, which were tested by dynamic tri-axial tests in about 40 the seismic safety evaluation reports of ocean oil platforms in the Bohai Sea, were collected and corrected. The dynamic shear modulus ratios and the damping ratios of various soil types with different depth in the Bohai seafloor were calculated and their statistical mean values were obtained. The statistical mean values are reasonable and are the important supplements in case that the tested soil samples are not enough in the Bohai Sea sites.