1. 1) Japan Sociaty of Civil Engineers, Report on the Steel Superstructure of Honshu-Shikoku Bridges, 1981 (In Japanese).
2. 2) Japan Sociaty of Civil Engineers, Report on the Steel Superstructure of Honshu-Shikoku Bridges, 1983 (In Japanese).
3. 3) Kubomura, K., Shimokawa, H. and Takena, K.: Technological Development of long-Spanned Bridges for Railway, Journal of the JSCE, Vol. 68, No. 7, 1983.
4. 4) Proposed Japan Industrial Standard: Measuring Methods of Shape and Size of Defects in Steel Welds using Ultrasonic Test Methods, Report of NDI, 1985 (In Japanese).
5. 5) Fukazawa, M., Natori, T., Terada, H., and Akashi, S.: Effect of Stress Relief on Fatigue Strength of High Strength Steel Corner Joint with Blowhole, Proc, of JSCE, No. 356, 1985. 4.