Geotechnical Earthquake Engineering

Comparison of dynamic shear modulus ratio (G/G versus strain ratio (y/fr) for various soil types and ranges of marine deposits. (Data from Fang, H.Y. et al.. Dynamic shear modulus of soft silt, Intermtioml Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics, University of Missouri, RoUa, MO,... 

Kramer, S.L. 1996. Geotechnical Earthquake Engineering. Prentice Hall. 653p. 

Makdisi, F.I., Seed, H.B., and Idriss, I.M. 1978, Analysis of Chabot dam during the 1906 earthquake. Proceedings of the Geotechnical Earthquake Engineering and Soil Dynamics. American Society of Civil Engineers. Vol. II 569-587. 

Structural Damage in a Populate Area due to an Active Fault. II International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamic. University of Missouri - RoUa. Saint Louis. 

This work was previously published in International Journal of Geotechnical Earthquake Engineering, Volume 1, Issue I, edited by TG. Sitharam, pp. 25-41, copyright 2010 by IGIPublishing (an imprint of IGI Global). 

Field tests which are most commonly employed in geotechnical earthquake engineering can be grouped into those that measure low-strain properties and those that measure properties at intermediate to high strains. Low-strain field tests t5q)ically induce seismic waves in the soil and seek to measure the velocities at which these waves propagate. Due to low strain amplitudes the measured shear wave velocity (V ) along with soil density (p) is used to compute low-strain shear modulus. 

Maximum shear modulus of soil (G ) is the fundamental property of the soil in geotechnical earthquake engineering application. The most reliable methods to determine the maximum shear modulus of soil are those conducted in the field. This is because the laboratory soil testing of undisturbed soil samples is often subjected to errors due to sample disturbance. Evenifthe disturbance is minor in advanced technique of sampling, time and expense may be substantial. Hence in the present study shear wave velocity obtained from the cross hole test is utilized to compute the maximinn shear modulus of the soil using the formula discussed earlier. 

Deterministic Seismic Hazard Analysis (DSHA) analysis is simple and more prevalent methods of hazard analysis in geotechnical earthquake engineering. DSHA involves the development of a particular seismic scenario upon which a ground motion hazard evaluation is based. The scenario consists of the postulated occurrence of an earthquake of a specified size occurring at a specified location. DSHA is more logical, more transparent, and more appropriate for requirements in engineering design. DSHA... 

Kramer, S. L. (2003). Geotechnical earthquake engineering. Upper Saddle River, NJ Prentice Hall. 

Thevanayagam, S., Ecemis, N. (2008). Effects ofpermeability on liquefaction resistance and cone resistance. ASCE Geotechnical Special Publication 181, Geotechnical Earthquake Engineering and Soil Dynamics (p. 11). 

Luong, M. R, Sidaner, J. F. (1981). Undrained behaviour of cohesionless soils under cyclic and transient loading. InProceedings of the Int. Conf. Rec. Advances in Geotechnical Earthquake engineering and soil dynamics (Vol. 1.) (pp. 215-220), St Louis, ML... 

---