Development of Supporting System for Quick Inspection and Restoration of Earthquake Damaged Buildings

Abstract eng:
To restore an earthquake damaged community as early as possible, well-prepared reconstruction strategy is most essential. When an earthquake strikes a community and destructive damage to buildings occurs, immediate damage inspections are needed to identify which buildings are safe and which are not to aftershocks, in order to prevent disaster due to aftershocks. Presented in this paper is strategy of post-earthquake inspection and restoration of damaged buildings in Miyagi prefecture area in Japan. A multi-layer Web-GIS system are developed by compiling various data about ground motion, damage distribution and so on, in order to fasten post-earthquake activities by local government and structural engineer. Major functions of the developed system are as follows: 1) Compile earthquake observation data from strong motion networks of various organizations in Miyagi prefecture areas through internet. 2) Evaluate distribution of seismic intensity and ground motion in the affected area. 3) Predict damage levels of public buildings and timber houses using database on characteristics of buildings 4) Present earthquake observation data, seismic intensity distribution and predicted damage distribution on Web-GIS. 5) Transmit information to support quick inspection and restoration to local government and structural engineers. 6) Integrate data of damage to buildings from field-survey by the structural engineers through internet and analyze damage statistics and tendency for improvement of scheme of damage inspection and restoration. Details of damage prediction methodology and calibration of predicted building damage with those observed in recent major earthquakes in Japan, such as 2003 Miyagi-ken-hokubu, 2007 Notohanto, and 2007 Niigata-Chuetsu-oki Earthquakes, are also described.

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