To early and reliably detect earthquake motion really dangerous for a building.
An earthquake disaster prevention system receives emergency earthquake alert information containing at least information of an earthquake location and its scale (magnitude) delivered when an earthquake occurs, and determines a risk of the building. The system includes a reception terminal 4 for receiving the emergency earthquake alert information and a vibration meter 2 disposed in the building for measuring at least one of acceleration, displacement and earthquake intensity generated by the earthquake as vibration, and determines generation of long-period ground motion for the building based on the earthquake location and magnitude included in the emergency earthquake alert information, and whether a long-period component containing a natural vibration period of the building is extracted from the signal measured by the vibration meter 2.
COPYRIGHT: (C)2011,JPO&INPIT
Hiroshi Miyata
Akihiro Omiya
Masayuki Shigeta
Yuji Sekiya
日立水戸エンジニアリング株式会社
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