1. Department of Civil Engineering, Tokyo Institute of Technology, Tokyo, Japan.
2. Department of Architecture and Civil Engineering, University of Fukui, Japan.
3. Bridge and Structural Engineering Division, West Nippon Expressway Company Limited, Osaka, Japan.
4. West Nippon Expressway Engineering Kansai Company Limited, Osaka, Japan.
5. Research and Development Department, Nippon PS Company Limited, Fukui, Japan.