Date: May 13,2002
Place: National Institute of Standards and Technology, Gaithersburg, MD, USA
Attendees: U.S. Side -- Mehmet Celebi (Chairman) USGS
Michael Sharp (Chairman) CORPS
Japan Side -- Osamu Matsuo (Chairman) NILIM
Takahiro Sugano (Chairman) PARI
Keiichi Tamura PWRI
Shojiro Kataoka NILIM
Shuji Tamura Shinshu University
1. Objective and Scope of Work
The objectives of work include:
(1) To promote sharing of strong motion earthquake data among researchers and practicing engineers, and enhance the availability of technology for evaluating the destructive effects of earthquake motion, and
(2) To promote research on the dynamic behavior of soils, foundations and earth structures during earthquakes.
The scope of work includes:
(1) Exchange strong motion data regularly and identify significant issues.
(2) Exchange information on technological developments, state-of-the-art and practice related to strong motion recording, hazard mapping, soil-structure interaction, soil behavior and stability during earthquakes,
(3) Exchange field data related to geotechnical engineering, and
(4) Plan and conduct programs of cooperative research and/or workshops in coordination with the proposed or ongoing programs.
2. Accomplishments
(1) Task committee published the proceedings of the second U.S.-Japan Workshop on Dynamic Soil-Structure Interaction that was held in Tsukuba, Japan, March 6-8,2001.
(2) Through US side secretary general and through Japanese side experts, a new CD-ROM data set containing the main-shock and aftershock records of the 1999 Izmit and Duzce, Turkey earthquakes (USGS OFR 01-163) was provided to Japan side.
(3) The Task Committee members proceeded the following cooperative researches:
a) Physical and Numerical Simulation of Structural Damages Due to Liquefaction and Development of Countermeasure Techniques, 1994-2004, by the National Research Institute for Earth Science and Disaster Prevention (NIED), Building Research Institute (BRI) and Wayne State University (WSU), and
b) Application of the Nuclear Magnetic Resonance Imaging (NMRI) Method to the Study of Soil Behavior and Stability During Earthquakes, by Port and Airport Research Institute (PARI) and Colorado School of Mines and the Lovelace Institute.
3. Future Plans
The future plans include:
(1) Plan to hold the fifth workshop on geotechnical earthquake engineering in early 2003 in San Diego, in conjunction with the workshop on seismic performance of urban, reclaimed and port areas. The workshop will be coordinated by Dr. Sugano of PARI and Dr. Sharp of CORPS.
(2) Plan the 3rd US-Japan Workshop on Soil-Structure Interaction for 2003. Responsible members will be Dr. Celebi of USGS and Dr. Okawa of BRI.
(3) Plan a workshop on Real-Time Instrumentation of Densely Urbanized Areas and Instrumentation of Civil Engineering Structure. Temporary committee will include Dr. Fujiwara of NIED, Dr. Okawa of BRI, Mr. Kusakabe of NILIM, Dr. Borcherdt, Dr. Wald and Dr. Celebi of USGS.
(4) Continue the cooperative research "Physical and Numerical Simulation of Structural Damages Due to Liquefaction and Development of Countermeasure Techniques, 1994-2004", by the National Research Institute for Earth Science and Disaster Prevention (NIED), Building Research Institute (BRI) and Wayne State University (WSU).
(5) Explore the possibility of joint research on site response issues. The responsible members will be Mr. Matsuo of NILIM and Dr. Borcherdt of USGS.