Ramin Motamed

Associate Professor
Ramin Motamed

Contact Information


  • Ph.D., University of Tokyo, 2007
  • M.S., Iran University of Science and Technology, 2002
  • B.S., Urmia University, 2000

Research interests

  • Shake table tests on deep and shallow foundations
  • Liquefaction and laterally spreading, mitigation measures
  • Site response analysis and soil-structure-interaction
  • LRFD for deep foundations
  • Analysis and interpretation of ground motions for soil-structure system response evaluation

Relevant past experience

  • Member of E-Defense Shake table testing and planning
  • Engineer and Senior Engineer, ARUP
  • Lecturer, Santa Clara University


  1. O'Riordan, N., Almufti, I., Lee, J., Ellison, K., and Motamed, R. (2018) "Site response analysis for dynamic soil-structure interaction and performance-based design" ICE Proceedings Geotechnical Engineering (in press)
  2. Li, G., Motamed, R., and Dickenson, S. (2018) "Evaluation of One-Dimensional Multi-Directional Site Response Analyses Using Geotechnical Downhole Array Data" Earthquake Spectra. February 2018, Vol. 34, No. 1, pp. 349-376.
  3. Stanton, K., Motamed, R., and Elfass, S. (2017) "Robust LRFD resistance factor calibration for axially loaded drilled shafts in Las Vegas" Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 143, Issue 6, June 2017.
  4. Li, G., and Motamed, R. (2017) "Finite element modeling of soil-pile response subjected to liquefaction-induced lateral spreading in a large-scale shake table experiment" Soil Dynamics and Earthquake Engineering, 92 (2017) 573-584.
  5. Motamed, R., Stanton, K., Almufti, I., Ellison, K., and Willford, M. (2016) "Improved Approach for Modeling Nonlinear Site Response of Highly Strained Soils: Case Study of the Service Hall Array in Japan" Earthquake Spectra, May 2016, Vol. 32, No. 2, pp. 1055-1074.
  6. Almufti, I., Motamed, R., Grant, D.N., and Willford, M. (2015) "Incorporation of velocity pulses in design ground motions for response history analysis using a probabilistic framework" Earthquake Spectra, Earthquake Engineering Research Institute, August 2015, Vol. 31, No. 3, pp. 1647-1666.
  7. Motamed, R., Towhata, I., Honda, T., Tabata, K., and Abe, A. (2013) "Pile group response to liquefaction-induced lateral spreading: E-Defense large shake table test" Soil Dynamics and Earthquake Engineering, Vol. 51, August 2013, pages 35-46.
  8. Motamed, R., and Towhata, I. (2010) "Shaking table tests on pile groups behind quay wall model undergoing lateral spreading" Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 136, No. 3, pp. 477-489.
  9. Motamed, R., and Towhata, I. (2010) "Mitigation measures for pile groups behind quay wall models undergoing lateral flow of liquefied soil: shaking table results" Soil Dynamics and Earthquake Engineering, Vol. 30, Issue 10, October 2010, Pages 1043-1060.
  10. Motamed, R., Sesov, V., Towhata, I., and Anh, N.T. (2010) "Experimental modelling of large pile groups in sloping ground subjected to liquefaction-induced lateral flow: 1-G shaking table tests" Soils and Foundations, Vol.50, No.2, pp. 261-280.