27. 地震の震源情報を用いたタンクの安全評価システムの開発-その2

概要

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For an efficient patrol to prevent and/or minimize secondary disaster such as fire breakout, diffusion of oil at the tank sites just after an earthquake, we have developed a system that can quickly estimate the extent of damage of tanks by short and long-period strong ground motions using earthquake early warning (EEW). The process flow of the system is (1) Acquisition of seismic information from EEW, (2) Estimation of acceleration response spectrum Sa using the semi-empirical method, (3) Assessments of the hazard for circumferential shell stress, axial shell stress, seismic capacity based on Sa and (4) Transmission of the potential damage information to mobile telephones or to PCs by e-mail. Since the process time from (1) to (3) in the above process flow and sloshing evaluation is within 0.6 sec, it is considered that the system provides useful information for the rational initial responses at tank sites.