| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem that: underwater assembling in a precast work method has disadvantages such as the corrosion of metal fittings and difficulty in installation work and inspection, more reconsideration is given to a friction pile than to a conventional bearing pile on the basis of the experience of serious damage caused by the impact of an epicentral earthquake in Great Hanshin Earthquake, and this suggests a method of supporting a frame in a soft landing mode by raising the rigidity of a whole structure. SOLUTION: Four ends of a crossed support 2 are shaped in protrusions of 3/4 circles in sections, and both ends of a wall panel 3 are cut in nearly equal recess shapes. The protrusion and recess surfaces of the two are fitted and connected. This fitting connection serves as a guide rail and a mutual reinforcement to each other. For stacking these members in a plurality of steps, lower parts are driven into the seabed to stabilize, and each interval between tops of the two supports is tensioned by applying post-tensioning to resin-coated PC high-tension steel to integrally solidfy continuou walls. As this is a multi-step type construction, a sulfur-curing precast member having high seawater resistance is used in the underwater structure, and a fireproof cement precast member can be used for the construction above the seawater surface having a risk of a fire. COPYRIGHT: (C)2005,JPO&NCIPI
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