Statistical study of working conditions on construction of a very large floating structure in Tokyo Bay

Abstract

A statistical study on the workable probability of assembling a floating airport in open sea has been done in this study. A Γ-shaped structure adjacent to a small rectangular module is considered as a typical shape during the construction, and the assembling condition is established upon the relative vertical motions between them. In this paper, first we estimate the elastic deformations of both structures in regular waves with various wave periods and wave heading angles, and then we evaluate the relative vertical motion gaps between the two structures. In the next place, we make a long-term prediction of the gaps between them at Tokyo Bay by using the wave directional spectrum and the long-term wave data. Finally, we assess the workable conditions for constructing a very large floating structure at the construction site in Tokyo Bay.