15:00 〜 15:20
*Reiji Hirano1, Reiko Kuwano2, Makoto Kuno2, Fuminori Yanagimoto3, Wakaba Tsuruta3, Kinya Ishibashi3 (1. Department of Civil Engineering, Graduate School, The University of Tokyo, 2. Institute of Industrial Science, The University of Tokyo, 3. Nippon Kaiji Kyokai)