SOUNDNESS PREDICTION DEVICE, SOUNDNESS PREDICTION METHOD, PROGRAM AND RECORDING MEDIUM

PROBLEM TO BE SOLVED: To provide a soundness prediction device capable of predicting change of soundness of bridge piers in the future.SOLUTION: A soundness prediction device 20 predicts change of soundness of bridge piers 3 disposed on a foundation 9 according to height of a surface of the foundation. The soundness prediction device comprises: vibration information calculation means for inputting input vibration information to each of plural analysis models which simulates the bridge piers 3 and the foundation 9, and in which the height of the surface of the foundation is changed, and calculating response vibration information of the bridge pier 3 in each analysis model; and soundness calculation means for calculating a ratio of an area of a waveform in a range of frequency in which first frequency is upper limit, and an area of a waveform in a range of frequency in which second frequency larger than the first frequency is upper limit, as soundness of the bridge piers 3, based on a waveform indicating magnitude of vibration for every frequency obtained from the response vibration information of the bridge pier 3 in each analysis model.SELECTED DRAWING: Figure 1 【課題】橋脚の健全度の変化について将来予測ができる健全度予測装置等を提供する。【解決手段】健全度予測装置２０は、地盤９に設けられた橋脚３について地盤表面の高さに応じた健全度の変化を予測するものであり、橋脚３および地盤９を模した解析モデルであって地盤表面の高さを変えた複数の解析モデルのそれぞれに入力振動情報を入力し、各解析モデルにおける橋脚３の応答振動情報を算出する振動情報算出手段と、各解析モデルにおける橋脚３の応答振動情報から得られた振動数ごとの振動の大きさを示す波形から、第１の振動数を上限とする振動数の範囲の波形の面積と、第１の振動数より大きい第２の振動数を上限とする振動数の範囲の波形の面積による比を橋脚３の健全度として算出する健全度算出手段と、を有する。【選択図】図１