*Go Kobayashi¹, Tomohiro Fujita², Shihchun Lin¹, Tatsunori Matsumoto³, Shuichi Kamei¹ (1. Jibanshikenjo Co. Ltd., 2. Center for advanced engineering structural assessment and research, 3. Kanazawa University)

*Shuichi Kamei¹, Go Kobayashi¹, Tomohiro Fujita², Shihchun Lin¹, Tatsunori Matsumoto³ (1. Jibanshikenjo Co. Ltd., 2. Public Works Research Institute, 3. Kanazawa University)

*TOKIDA KAZUNORI¹, YOSHIO SHIOZAKI¹, MASASHI KITAHAMA¹, TOSHIHIKO SAKAMOTO¹, AKIO SOWA¹, KEIGO MIYAKITA¹ (1. Japanese Association for Steel Pipe Piles（JASPP）)

*OGURA HITOSHI¹, Shimpei KOUME², Akihito NAKAZATO³ (1. Foundation Engineering Research Associates, 2. Japan Pile Corporation, 3. System Measure Co.,Ltd.)

*Kengo Suzuki¹, Masamichi Sawaishi¹, Kazuhide Toda¹, Takaaki Nagaura¹ (1. Nippon Steel Corporation)

*SHOGO ISHII ISHII¹, Hirokazu Akagi¹, Takatoshi Kiriyama² (1. Waseda University, 2. Shimizu Institute of Technology)

*Isabella Galarosa Martinez¹, Yasuo Sawamura¹, Ryunosuke Kido¹, Makoto Kimura¹ (1. Kyoto University)