REINFORCEMENT STRUCTURE OF UNDERWATER INSTALLATION CYLINDRICAL BODY, AND REINFORCEMENT METHOD: Fid-Bau Portal

REINFORCEMENT STRUCTURE OF UNDERWATER INSTALLATION CYLINDRICAL BODY, AND REINFORCEMENT METHOD

KUMAGAI TAKAHIRO / IKENO KATSUYA / MIURA NARIHISA / KIMURA MAKOTO / HIGO YOSUKE / ONDA SHINICHIRO / SAWAMURA YASUO

To provide a reinforcement structure of underwater installation cylindrical body capable of being easily constructed and suitably reinforcing a cylindrical body such as a steel pipe pile for supporting mono-pile foundations, piers, and the like, and a reinforcement method.SOLUTION: A reinforcement structure of an underwater installation cylindrical body 3 includes a reinforcement cylindrical body 7 that is placed outside the underwater installation cylindrical body 3. The reinforcement cylindrical body 7 includes: an inner tube 8 placed along the outer periphery of the underwater installation cylindrical body 3; an outer tube 9 placed outside the inner tube; and an upper lid 11 that closes the upper surface of a compartment 10 formed between the inner tube 8 and the outer tube 9. The reinforcement cylindrical body 7 is designed to penetrate underwater ground 1 by depressurizing the compartment 11.SELECTED DRAWING: Figure 2

【課題】モノパイル式基礎や桟橋等を支持する鋼管杭等の筒状体を好適に補強し、容易に施工可能な水底設置用筒状体の補強構造及び補強方法の提供。【解決手段】この水底設置用筒状体３の補強構造は、水底設置用筒状体３の外側に配置される補強用筒状体７を備え、補強用筒状体７は、水底設置用筒状体３の外周に沿って配置された内管８と、内管の外側に配置された外管９と、内管８と外管９との間に形成される隔室１０の上面部を閉鎖する上蓋１１とを備え、隔室内１１を減圧することによって水底地盤１に貫入されるようにしたものである。【選択図】図２

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