DECISION METHOD OF THE OPTIMIZED INSPECTION TIME BASED ON STOCHASTIC MODEL CONSIDERED DETERIORATION MECHANISM

劣化の進行が時間のべき乗に従う物理劣化予測式を対象とし，初期条件や環境等による変動を反映した確率モデルを導き，コストが最小となる最適な点検・補修時期を導出する手法を開発した．この手法は，確率モデルの導出と選択，複数の劣化機構を経由する場合の確率モデルの結合，コスト期待値の最小化から構成されている．この手法は，地中に埋設されたライフライン設備のように，点検に相当の時間とコストを必要とし，点検データの蓄積が少なく，劣化が潜在的に進行する場合に，既往の物理劣化予測式を活用できるようにした点に特徴がある．これらの手法を地中の通信用コンクリート構造物に適用し，実構造物のデータを用いて適用性の確認を行った．

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