International Technical Committee

Jonathan P. Stewart, Ph.D., P.E.
Professor and Vice Chair
Department of Civl and Environmental Engineering


B.S., 1990, University of California, Berkeley 
M.S., 1992, University of California, Berkeley
Ph.D., 1996, University of California, Berkeley
Selected Awards and Honors
• Walter L. Huber Civil Engineering Research Prize, ASCE, 2008
• Outstanding Paper Award for Vol. 21 (2005) of Earthquake Spectra,2007 (with Yoojoong Choi)
• Shamsher Prakash Research Award, Shamsher Prakash Foundation,2006
• Fulbright Scholarship, Senior Lecturer in Italy, United States Department of State, 2005
• Northrop-Grumman Excellence in Teaching Award, UCLA HSSEAS, 2003
• Arthur Casagrande Professional Development Award, ASCE, 2001
• Favorite Professor Award, UCLA Student Chapter of ASCE, 1999, 2001
• Faculty Early Career Development Award, NSF, 1998
• Graduate Fellow in Earthquake Hazard Reduction, EERI, 1995

Research Interests
Professor Stewart's primary research interests are in geotechnical earthquake engineering, with emphases on seismic soil-structure interaction, probabilistic characterization of site effects on earthquake ground motions, seismic compression of unsaturated soils, and ground failure in sands as well as marginal plasticity soils. His research has involved: interpretation of earthquake strong motion data to gain insight into soil-structure interaction effects and site effects; cyclic field testing of full-scale foundation components; advanced dynamic testing of soils in the laboratory; and detailed case studies of seismic ground failure at sites in California, Taiwan, Turkey, Japan, Greece, Italy, and India. Results of work by his research group are widely utilized in engineering practice, including the NEHRP Provisions for the Seismic Design of New Buildings ,and guidelines published by the California Geological Survey for application to school and hospital facilities.

Professor Stewart is a registered P.E. in California and maintain an active consulting practice to assist engineering firms and government agencies with problems in geotechnical engineering and earthquake engineering. Typical projects include probabilistic ground motion characterization, ground failure hazard characterization (including landslides, liquefaction, cyclic softening, and seismic compression), innovative applications of field testing to evaluate critical material or system characteristics, and expert witness testimony.
Committee Members:
Ahmed Elgamal, Ph.D.
Department of Structural Engineering
Ahmed Elgamal Chaired the Department of Structural Engineering from 2003 to 2007. In 1984, he received his Ph.D. from Princeton University. He joined UC San Diego in 1997 as Professor after a post-doctoral appointment at the California Institute of Technology (1985-86), and faculty positions at Rensselaer Polytechnic Institute (1986-96) and Columbia University (1996-97).

He served (2006-2007) as Principal Investigator of the NSF Network for Earthquake Engineering IT project (NEESit,, as a Thrust Area Leader (2001-2007) of the Pacific Earthquake Engineering Research (PEER  ) Center, and as Technical Director (1991-1996) of the Rensselaer Geotechnical Centrifuge Research Center ( ).
His areas of research interest include large-scale soil-structure experimental and computational simulation of liquefaction and related mitigation approaches, Information Technology (IT) applications in Civil Engineering research and education, and interpretation of recorded seismic  response through system-identification and data mining procedures. Incorporation of IT into structural engineering is currently among his main research areas, with emphasis on Health Monitoring of Structures and Earthquake Engineering. Internet applications include sensor networks for monitoring our civil infrastructure, with real-time condition assessment and decision-making algorithms ( Integration of research and education with live web-accessible computations and experiments is also a main focus (  ,  , and  ). He is author and co-author of over 250 Technical Publications.
Susumu Iai, Ph.D.
Disaster Prevention Research Institute
Kyoto University
• B.S., 1974, University of Tokyo
• Ph.D., 1991, University of Tokyo

Area of Specialization
Earthquake Geotechnical Engineering

Professional Experience
(1) Reconnaissance of earthquake damage to port structures
Experience in reconnaissance of damage to port structures at large earthquakes in Japan:

1978 Miyagi-ken-oki earthquake (Richter magnitude 7.4)

1983 Nihonkai-chubu earthquake (Richter magnitude 7.7)

1984 Hyuganada earthquake (Richter magnitude 7.4)

1987 Chibaken-toho-oki earthquake (Richter magnitude 6.7)

1993 Kushiro-oki earthquake (Richter magnitude 7.8)

1993 Hokkaido-Nansei-oki earthquake (Richter magnitude 7.8)

1994 Hokkaido-toho-oki earthquake (Richter magnitude 8.1), and

1995 Hyogoken-Nambu (Kobe) earthquake (Richter magnitude 7.2).

The results of the detailed investigations were compiled and published in the Technical Notes of the Port and Harbor Research Institute.

Experience in reconnaissance of earthquake damage outside Japan, including

1990 Philippines (Luzon) earthquake (Richter magnitude 7.8)

1994 Northridge, U.S.A., earthquake (Richter magnitude 6.8), and

1999 Kocaeli, Turkey, earthquake (Richter magnitude 7.4).

The Port an Harbour Research Institute has been operating a strong earthquake motion recording network in port areas in Japan since 1962, compiling more than 4,000 earthquake records. Professor Iai had been the chief of this operation since 1989 till 1998.

(2) Academic contributions

Academic contributions are directed toward developing a methodology to evaluate seismically induced deformation in soil-structure systems including port structures. Contributions include shake table testing of soil-structure-fluid systems, constitutive modeling of sand under cyclic loading, and analysis of soil-structure systems during earthquakes.

The developed methodology was applied for analyzing seriously damaged quay walls at Kobe port, leading to identifying the mechanism of the damage and suggesting effective remedial measures to mitigate the damage. The methodology was also applied to various soil-structure systems including horizontal ground, mild slope, embankments, building-foundation systems, gravity quay walls, sheet pile quay walls and underground structures (as reported at the JSSMFE symposia in 1989 and 1992 and the symposium of NSF blind test project "VELACS" in 1993, Balkema). The methodology was further applied to such an important issue in practice as to establish a deformation based design of remedial measures against liquefaction for optimizing the area of soil improvement (as reported at JSCE annual meetings in 1992 and 1993 and at 12th ICSMFE, New Delhi, in 1994).

Professor Iai served as chairman and/or member of technical review committees for designing ports and airports in Japan, including Kansai International Airport.
Steve kramer, Ph.D.
John R. Kiely Professor of Civil Engineering
Department of Civl and Environmental Engineering
University of Washiton
Steve Kramer received his B.S., M.Eng., and Ph.D. degrees from the consulting firm in the San Francisco Bay Area, concentrating on seismic problems and problems involving soft clay settlement/stability. His Ph.D. flow slides caused by static liquefaction. Kramer joined the geotechnical group in the University of Washington Department of Civil Engineering in
courses in geotechnical engineering, and advised numerous graduate students on Masters and Ph.D. research projects. His primary research interests include soil liquefaction, site response analysis, seismic slope the area of performance-based earthquake engineering, specifically the integration of probabilistic response analyses with probabilistic seismic hazard analyses. He has conducted research for the National Science Foundation, the Pacific Earthquake Engineering Research(PEER) Center, the Washington State Department of Transportation (WSDOT), and the U.S. Geological Survey. His work with WSDOT on the
Alaskan Way Viaduct in the early 1990s first pointed out the vulnerabilities of the viaduct and Seattle seawall to severe earthquake damage.

Kramer has been the recipient of the Presidential Young Investigator Award from the National Science Foundation, the Arthur Casagrande Professional Development Award from ASCE, a Walter Huber Research Prize from ASCE, and the 2009 Norman Medal from ASCE. He also held the John R. Kiely Professorship in Civil Engineering at the University of Washington from 1997 – 2006. Kramer was a Senior Research Scientist in the International Centre for Geohazards at the Norwegian Geotechnical Institute (NGI) in 2003, and was recently named to the faculty of the European School for Advanced Studies in the Reduction of Seismic Risk (the ROSE School) at the University of Pavia in Italy.

Kramer is the author of the book Geotechnical Earthquake Engineering and co-developer of the computer programs, ProShake and EduShake. He has served on the Executive Research and Executive Management Committees of the Pacific Earthquake Engineering Research (PEER) Center. He co-led the National Science Foundation's Advance Reconnaissance Team for the Ji-Ji (Taiwan) earthquake in 1999, and is a member of the Advisory Panel for the Geo-Engineering Earthquake Reconnaissance (GEER) Association.

Kramer has served as News Correspondent for the Geotechnical Division of ASCE, chaired the organizing committee for the 1998 Geotechnical Earthquake Engineering and Soil Dynamics conference held in Seattle, and served on the editorial board of the ASCE Journal of Geotechnical and Geo-environmental Engineering. He currently chairs the Geo-Institute’s Conference Coordinating Council. He is also active with the Earthquake Engineering Research Institute and the Seismological Society of America.

Kramer has served as a consultant to private firms and government agencies on projects in the U.S. and abroad. He has consulted on high-rise structures and bridges in the Seattle area and served on consulting
boards for nuclear waste treatment plants, nuclear reactors, dams, and offshore structures/facilities.


Zhongkui Li, Ph.D.
Department of Hydraulic Engineering
Tsinghua University
• B.S., 1970, Tsinghua University, China
• M.S., 1983, Tsinghua University, China
                                 • Ph.D., 1990, Institutfur Geotechnik, TU Vienna

Research Interests
Hydropower station structures design;
Surrounding  rock  stability  analysis  of  the  underground caverns;
Optimum  design  for underground  powerhouse;
Advanced mechanical characteristics of rock joints
Large-scale experimental study of Geo-mechanical  model for underground group caverns
Masakatsu Miyajima, Ph.D.
Department of Civil Enigneering
Kanazawa Univeristy
Area of Specialization
Earthquake Engineering/Disaster Prevention

Research Interests
Earthquake disaster prevention
Seismic performance of lifelines
Soil liquefaction

Kohji Tokimatsu, Ph.D.
Department of Architeture and Building Engineering
Tokyo Institute of Technology
Kohji Tokimatsu is a professor, Department of Architecture and Building Engineering, Tokyo Institute of Technology. He received a Doctor of Engineering degree in 1979 from Tokyo Institute of Technology. He was a research associate of the university from 1980-1986, a visiting scholar with Professor H. Bolton Seed, University of California, Berkeley, from 1982-1984, and promoted to an associate professor and a professor of the department in 1986 and 1993, respectively.

Professor Tokimatsu's research has been mainly in geotechnical earthquake engineering with emphases on liquefaction and its remediation, seismic soil-pile-structure interaction, and geophysical exploration using surface waves including microtremors for site characterization. His research has involved: advanced dynamic testing of soils in the laboratory and in-situ; dynamic full-scale and centrifuge shaking table studies on soil-pile-structure systems and their remediation; field studies of sites damaged during recent earthquakes; as well as various problems related to building foundation. His major awards include prizes for outstanding technical papers from Japanese Geotechnical Society in 1988 and Architecture Institute of Japan in 2003.

Ph. D. in Environmental Engineering, Tokyo Institute of Technology, 1979
M.S. in Environmental Engineering, Tokyo Institute of Technology, 1976
B.S. in Architecture and Building Engineering, Tokyo Institute of Technology, 1974

Professor, Department of Architecture and Building Engineering, Tokyo Institute of Technology,
O-okayama, Tokyo, 1993-present
Visiting Researcher, National Research Institute for Earth Science and Natural Disaster,
Tsukuba, 2002-present
Visiting Professor, University of Alberta, Edmonton, 1996
Associate Professor, Tokyo Institute of Technology, O-okayama, Tokyo, 1986-1993
Research Associate, Tokyo Institute of Technology, O-okayama, Tokyo, 1981-1986
Visiting Scholar, University of California, Berkeley, 1982-1984
Post Doctoral Fellowship for Reserach Abroad, Japan Society for the Promotion of Science,
Research Associate, Earthquake Engineering, Department of Environmental Engineering,
Tokyo Institute of Technology, Nagatsuda, Yokohama, 1980-1981
Post Doctoral Fellow, Japan Society for the Promotion of Science, 1979-1980

Member, The Japanese Geotechnical Society
Member, Architectural Institute of Japan
Member, Japan Society of Civil Engineers
Member, American Society of Civil Engineers
Member, Seismological Society of America
Member, Earthquake Engineering Research Institute
Member, Japanese Association for Earthquake Engineering

Editor-in-Chief, Soils and Foundations, Japanese Geotechnical Society (JGS), (2002-2005)

(1) Geophysical Site Characterization
(2) Seismic Hazard Evaluation using Microtremors
(3) Dynamic Soil-Pile-Structure Interaction in Soft Soils
(4) Understanding Dynamic Soil Properties
(5) Liquefaction Evaluation Procedure and Remedial Measures
(6) Performance-Based Design of Building Foundation

Prize for Science and Technology (Research Category), the Commendation by the Minister of
Education, Culture, Sports, Science and Technology (MEXT) (2009)
Nikkei BP Technology Award (2008)
Thomas A. Middlebrooks Award, ASCE (2006)
Japanese Geotechnical Society Award for Best Research Paper (2006)AIJ Award for Best
Research Paper, Architecture Institute of Japan (2003)
Japanese Geotechnical Society Award for Best Research Paper (1988)