10. Ultimate Strength of the Joint of Concrete Offshore Structure Joined Afloat

概要

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Large concrete offshore structures have been constructed so far in one united body in a large graving dock. This method, however, needs a large amount of initial capital investment for building a graving dock. On the other hand, if an existing shipbuilding dock, which is fully equipped, is used, it would be possible to cut time and cost in the production of concrete offshore structures. Existing shipbuilding docks, however, are usually not wide enough to construct a large concrete offshore structure in one unit. To overcome this problem, the authors have developed a method for joining afloat concrete offshore structure sections which have been built in two units in an existing shipbuilding dock. In this method, the joint is usually located at the central part of the structure where the maximum resultant forces act and some structural discontinuities may exist. The authors have studied the ultimate strength of the joint by performing FEM analysis and confirmed that the joint has sufficient strength comparable with other parts which have been constructed beforehand in a shipbuilding dock.
社団法人日本船舶海洋工学会の論文