目標破壊確率を制約条件とする浮遊式人工島の最適化に関して

概要

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A probabilistic method is presented to simultaneously determine the stiffness of mooring system and size of breakwater which are attached to a large floating island subjected to wind waves. The floating island is idealized as an elastic circular plate witha ring shaped stiffenerand uniformly disinbutedtension legs. Fora specifiedreturn period, tensile stresses in tension legs are calculated by a wet mode superposition approach and stationary rancbm vibration theory, taking account of stnictural flexibility and fluid strecture interaction. Ranges of stiffness of mooring system and size of brmkwater are determined in such a way that the failure probability becomes less than a targetfailure probability. Then, the appropriate stiffness of mooring system and size of breakwater are selectedto minimize the total cost of mooring system and breakwater. Numerical examples are presented to illustrate how to determine the optimized stiffness of mooring system and size of breakwater at different offshore sites.
一般社団法人日本建築学会の論文
1996-03-20