Study on Damage Prediction and Preparedness Effect of Furniture Overturning Based on Earthquake Damage Investigation

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1. Relationship between structural and indoor damageWhile structural damage tended to be less for houses of newer construction, Indoor damage occurred almost uniformly independent of the house construction age. For mitigation of human damage, earthquake preparedness against furniture overturning is necessary even for new houses.2. Fragility curve for furniture overturning ratioPresent function agree with the relationship presented by Okada and Kagami(1991). The seismic intensity evaluated by the questionnaire survey is used as a strong ground motion index. In the seismic intensity 6 of the JMA scale, the furniture overturning ratio changes rapidly.3. Human injury prediction against the Off Miyagi EarthquakeHuman injury by furniture overturning was predicted considering the floor response of high-rise building against the Off Miyagi Earthquake scenario. The number of people exposed to high hazard such as the strong floor response in an indoor apace has increased. While human injury due to structural damage to the building tends to decrease according to the revision of the building code, the potential for human injury is increasing in urban area.4. Disaster mitigation effect by earthquake preparedness strategyFragility curve for furniture overturning considering the earthquake preparedness was proposed. The effect of the preparedness action according to the floor response was discussed. The strategy to reduce a disaster risk effectively under the limited time and budget to next earthquake occurrence is necessary5. Influence for improving seismic resistance capacityA diagnosis sheet for neighborhood community was examined as one of risk communication tools.