| 摘要 |
PURPOSE:To improve the safety of temporary coffering and construct an underwater structure efficiently, by using a caisson as a coffering unit. CONSTITUTION:A caisson 1 with upper and lower opening ends is used as a coffering unit, and by means of the caisson 1 for the coffering unit insulated from the peripheral water area, a structure 10 is constructed. After that, the caisson 1 is removed, and is used for the component of another structure. In this manner, the caisson 1 is used not only for temporary coffering, but for the component of a structure,and so the term of construction can be economically shortened, and in case that the caisson is used for temporary coffering, the water-stopping property is improved because of no joints, and accordingly, an under-water structure can be constructed in a safe circumstance.
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