Large Scale Tests on Buoyancy-Driven Vertical Piling Breakwater with Buoyancy-Driven Piles - SAKURAI, Yoshihiro; KIKUCHI, Yoshiaki; NAKANO, Fumitake; KIHARA, Kazuyoshi; ARIKAWA, Taro; KOBAYASHI, Makoto; TORAISHI, Tatsuhiko (PROCEEDINGS OF COASTAL ENGINEERING, JSCE, 2008)