权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Study on relationship between strong motions and structural damage observed during the West off Fukuoka Prefecture earthquake

福冈县西部地震强烈运动与结构破坏关系研究

基本信息

批准号：
17800001
负责人：
KAWASE Hiroshi
金额：
--
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Special Purposes
财政年份：
2005
资助国家：
日本
起止时间：
2005 至无数据
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17800001/
关键词：
Fukuoka Strong motion Source process Soil amplification Seismic damage Human loss and injury Indoor damage Liquefaction 強震動

项目摘要

The West off Fukuoka Prefecture earthquake of Magnitude 7.0 occurred on March 20, 2005, which was the first earthquake of M7 class occurred near a big city since the devastating Hyogo-ken Nanbu earthquake of 1995. It is possible to obtain a lot of observational data that bears statistical analysis.We found:1) The seismic records of K-NET, KiK-net, the JMA network, and Fukuoka Prefecture network and others were collected and analyzed. We then delineate a heterogeneous distribution of slip (seismic moment) along the fault plane. We found a single asperity (a strong patch) located in the southeast of the hypocentet The strong motions radiated from this asperity were then amplified by thick Quaternary layers along the eastern side of the Kego fault2) The extensive building damage investigation was conducted in the central part of the city, and the damage statistics fur structural types, number of stories, and construction age has been grasped. We also investigated other types of damage, such as human injury, indoor damage, damage by liquefaction, and landslides. We found that the damage ratio of buildings is larger in the eastern side of the Kego fault, and that older buildings had more serious damage. We also hind that the indoor damage depends strongly on the number of stories. We should note that the damage occurs mostly in a non-structural components, which may contribute to prevent further damage in the major structural components.3) By comparing a presumed strung motions with observation damage, we investigated applicability of the nonlinear response analysis model. By using the model established by the damage during the Hyogo-ken Nanbu earthquake, we hind that calculated damage ratios are tuned out to be much more than the observed and so we may need to tune up our prediction model for a moderately severe input

2005年3月20日发生的福冈县西近海7.0级地震是1995年兵库县南部大地震后，日本大城市附近发生的第一次7级地震。结果表明：（1）收集和分析了K-NET、KiK-NET、JMA台网、福冈县台网等的地震记录;然后，我们描绘了一个不均匀分布的滑动（地震矩）沿沿着断层面。我们发现一个单一的凹凸（一个强大的补丁）位于东南部的hypocentet。从这个凹凸辐射的强烈运动，然后被放大的厚第四纪层沿沿着东侧的Kego故障2）进行了广泛的建筑物损坏的调查，在城市的中心部分，和损坏的统计数据fur结构类型，层数和建设时间已经掌握。我们还调查了其他类型的损害，如人身伤害、室内损害、液化损害和山体滑坡。研究发现，凯戈断裂东侧的建筑物受损比例较大，且年代较久的建筑物受损较严重。同时也表明，室内损伤与楼层数有很大关系。应该注意的是，损伤主要发生在非结构构件上，这可能有助于防止主要结构构件的进一步损伤。3）通过比较假设的弦运动与观测损伤，研究了非线性响应分析模型的适用性。通过使用兵库县南部地震的破坏所建立的模型，我们发现计算的破坏率比观测的要大得多，因此我们可能需要调整我们的预测模型，以适应中等强度的输入