1. Faculty of Eng., Yokohama National Univ.
2. Structural Engineering Research Center, Tokyo Institute of Technology
3. Tokyo Institute of Technology
4. Graduate Schobl of Eng., Yokohama National Univ.
5. Building Construction Division, Nippon Steel Corporation
6. National Institute for Materials Science
7. National Research' Institute for Earth Science and Disaster Prevention
8. Nihon Univ.