*Kazuma Otsuki¹, Takeshi Sakaguchi², Tatsuji Fujii², Takamitsu Sakamoto³, Taro Chihara⁴, Mamoru Dejima⁴, Koki Kasajima⁵, Shun Shimizu⁵, Yoshihiro Nishimura⁶, Takashi Kimura⁷ (1. PENTA-OCEAN.CO.,LTD, 2. Specialists Center of Port and Airport Engineering, 3. OCEAN CONSULTANT JAPAN CO.,LTD., 4. AKTIO Corporation, 5. SKY SYSTEM CO., LTD., 6. TATEYAMA KAGAKU CO., LTD., 7. DAITOKU CO.,LTD.)

*Ryousuke Takahashi Takahashi¹, Hiroki Kurita¹, Wataru Ichii² (1. East Nippon Expressway Company Limited, Hokkaido Regional Head Office, 2. NEXCO Maintenance Hokkaido Co.)

*Kenji Yoshitake¹, Junya Kogiso¹, Naoki Tanaka¹, Kei Tokui², Ryuji Kitaura², Takemitsu Mizuki², kenichi Iwauchi², Makoto Takahashi³ (1. Shimizu Corporation, 2. Sharp Corporation, 3. Kanamoto Corporation)

*Toru Yoshimura¹, Yoshiki Mori¹, Ichiro Nakahara¹ (1. ORIENTAL CONSTRUCTION CO.,LTD)

*Takuya Nakai¹, Sano Kazuyuki¹, Wakayama Masanori¹, Sato Susumu¹, Nakamura Ryo¹ (1. Taisei Corp.)

*Akio Enndou¹, Hiroaki Aoki¹, Yoshinobu Hirade¹ (1. TAISEI Corporation)

*Kiyoaki Yoshizawa¹, Hiroaki Aoki¹, Akio Endou¹, Yoshinobu Hirade¹ (1. Taisei Corporation)

*Ryousuke Kawada¹, Tsutomu Chiba¹, Yuuki Nakano² (1. TAKENAKA CIVIL ENGINEERING & CONSTRUCTION CO., LTD., 2. SOIL AND ROCK ENGINEERRING CO.,LTD.)