地震波入力に対する応答変位を最小とする搭状型円筒シェルの形状解析 : エルセントロタワーと八戸タワー

概要

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This paper will present a method to express the characteristics of earthquakes in terms of towered shells of revolution shapes. A unique tower shape corresponding to an arbitrary earthquake load is obtained when the maximum strains in the structure are minimum. To this end we employ Genetic Algorithms for the minimization process because the other option, i.e. traditional calculus based optimization procedures, are difficult to apply and likely to fail when attempting to minimize structural response due to random earthquake excitation. Since computer based Genetic Algorithms use a large quantity of response data corresponding to a large number of optimal structural shape candidates for the investigation, response was calculated by the Corrector Duhamel's Integral because of this response solver's high accuracy, speed and relatively small computer memory requirements.
1998-07-30