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UCSD Lecture Series
UCSD Jacobs Hall EBU1
Engineer Lane, Booker Conference Room (#2512)
San Diego, CA 92161
Thursday, November 01, 2018, 5:30 PM - 8:00 PM PST
Category: Student Chapters

UCSD CalGeo 2018 Lecture Series

Consequences of Seismic Soil Liquefaction and State-of-Practice Evaluation Methods

By Professor Ricardo Dobry

Lecture will be after dinner & reception

The research paper for this lecture was selected by the Geo-Institute of the American Society of Civil Engineers (ASCE) to receive the Thomas A. Middlebrooks Award.


The two successive stages of liquefaction in the free field due to earthquake shaking are considered: liquefaction triggering associated with small cyclic strains followed by the post-triggering effects. It is concluded that most – but not all - liquefaction consequences of engineering significance involve high strains and hence are post-triggering phenomena. The liquefaction consequences are classified in four main categories: (i) flow slides and large deformations of embankments and slopes; (ii) free field deformations including lateral spreading; (iii) structural effects driven by the free field deformations; and (iv) structural damage that includes effects of gravitational and inertial structural forces. Each one of the four categories is discussed separately in some detail with focus on the current State-of-Practice of their evaluation and associated technical challenges.


Ricardo Dobry studied at the University of Chile, UNAM in Mexico City and MIT. He is an Institute Professor at Rensselaer Polytechnic Institute in Troy, NY, USA, where he is also Director of the Geotechnical Centrifuge Research Center. His research interests include soil dynamics, geotechnical earthquake engineering and centrifuge testing. Dr. Dobry was a participant of the group that wrote the new seismic provisions on local site amplification in the 1990’s now incorporated in the U.S. building and bridge codes. He has written more than 200 technical papers and research reports and has directed 40 PhD and MS theses. Dobry has been an invited keynote speaker at many national and international meetings, including the Ishihara Lecture, Carrillo Lecture, Prakash Lecture and ASCE’s H. B. Seed Medal Lecture. Other ASCE awards include the Croes Medal, Middlebrooks Award, and the Outstanding Civil Achievement Award to the team that participated in the seismic design of the Rion-Antirion Bridge in Greece. Dr. Dobry has also served as consultant and member of consulting boards of offshore oil platforms in Venezuela and Australia, earth dams and dikes in California, Puerto Rico and South America, and seismic retrofitting of several large bridges in NYC. He was elected member of the National Academy of Engineering in 2004 for his fundamental contributions to geotechnical earthquake engineering.


Professionals $25, Non-UCSD Students $10, UCSD Students Free

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Contact: Ahmed Ebeido [email protected]