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.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 2848-2852
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.2848
• Online since: February 2013
• Authors: Jing Yan Lan, Yue Jun Lu, Yan Ju Peng
• Keywords: Bohai Seafloor, Damping Ratio, Dynamic Shear Modulus, Statistical Mean Value

References

[1] Seed H.B., Idriss I. M: The Influence of soil conditions on ground motions during earthquakes. Journal of the Soil Mechanics and Foundation Divison, . ASCE, 95(SM1) (1969), P. 99-137.

DOI: 10.1061/jsfeaq.0001260

[2] Y.J. Zhang: Statistical studies on shear modulus ratios and damping ratios of soil in Shanghai area. World Earthquake Engineering, Vol. 26(2) (2010), pp.171-175. (in Chinese).

[3] G.X. Chen, X.Z. Liu, D.H. Zhu: Study on dynamic characteristics of recently deposited soils in southern area of Jiangsu Province. Chinese Journal of Underground Space and Engineering, Vol. 1(6) (2005), pp.1139-1142. (in Chinese).

[4] J.W. Shen: Seismic ground motion parameter zonation of Shanghai. Beijing: Earthquake Press, 2004. (in Chinese).

[5] Y.J. Lü, R.Y. Tang, H.J. Sha: Experimental study on dynamic shear modulus ratio and damping ratio of the soils of Bohai seafloor. Journal of Disaster Prevention and Mitigation Engineering, Vol. 23(2) (2003), pp.35-42. (in Chinese).

[6] J. Sun, X.M. Yuan, R. Sun: Reasonability comparison between recommended and code values of dynamic shear modulus and damping ratio of soils. Earthquake Engineering And Engineering Vibration, Vol. 24(2) (2003), pp.125-133. (in Chinese).

[7] X.M. Yuan, R. Sun, J. Sun: Laboratory experimental study on dynamic shear modulus ratio and damping ratio of soils. Earthquake Engineering and Engineering Vibration, Vol. 20(4) (2000), pp.133-139. (in Chinese).