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

1.结构损伤与室内损伤的关系虽然较新建筑的房屋结构损伤较小，但室内损伤几乎一致地发生在与房屋建造年限无关的情况下。为了减少人为破坏，即使是新房子，也必须做好防震准备，以防家具倾覆。家具倾覆率的脆性曲线呈现函数符合Okada和Kagami(1991)提出的关系。采用问卷调查评估的地震烈度作为强震指标。在JMA地震烈度为6度时，家具倾覆率变化较快。针对宫城外海地震的人员伤害预测考虑了高层建筑对宫城外海地震的楼层反应，对家具倾覆造成的人的伤害进行了预测。暴露在高危险环境中的人数有所增加，如室内空间中强烈的地板反应。随着建筑规范的修订，由于建筑物结构损坏而造成的人身伤害趋于减少，但在城市地区，人身伤害的可能性正在增加。防震减灾策略的减灾效果提出了考虑防震措施的家具倾覆易损性曲线。讨论了楼层反应对防灾效果的影响。在下一次地震发生前有限的时间和预算内有效降低灾害风险的战略是必要的。对提高抗震能力的影响邻里社区诊断表作为风险沟通工具之一被检验。

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.