〇Shin OIKAWA¹, Yuichi Tatsumi¹, Akio Sowa¹, Eiji Kohama², Keisuke SATOH³ (1.Japanese Association for Steel Pipe Piles, 2.Port and Airport Research Institute, 3.Toa Corporation)

〇Keisuke SATOH¹, Eiji KOHAMA², Yoshio SHIOZAKI³, Naoya NAGAO³ (1.TOA CORPORATION, 2.Port and Airport Research Institute, National Institute of Maritime, Port and Aviation Technology, 3.Japanese Association for Steel Pipe Piles)

〇Hirotaka Ito¹, Eiji Kohama¹, masahiro endo², shinya Kuroki² (1.Port and Airport Research Institute, 2.Kanto Regional Development Bureau)

〇Atsushi Mikami¹, Makoto Kamiyama² (1.Tokai University, 2.Tohoku Institute of Technology)

〇Akihiko KONDO¹, Eiji Kohama¹, Kenji Watanabe², Hayato Kokusho², Shun Amano², Moemi Oyama², Naoya Nagao³, Tohru Yoshihara⁴ (1.Port and Airport Research Institute, National Institute of Maritime, Port and Aviation Technology, 2. Yachiyo Engineering Co., Ltd. , 3.Nippon Steel Corporation, 4. Aomi construction Co.,Ltd.)

〇Yousuke Ohya¹ (1.Port and Airport Research Institute)

〇Hisashi Nakao¹, Tomoya Yono¹, Michio Ohsumi¹ (1.Public Works Research Institute)

〇Tomohiro Ninomiya¹, Hisashi Nakao¹, Michio Ohsumi¹ (1.Public Works Research Institute)