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

自1995年毁灭性的Nanbu地震以来，M7阶级的第一次地震发生在2005年3月20日，这是M7阶级的第一次地震发生，这是M7级的第一次地震发生。收集和分析了县网络和其他网络。然后，我们描绘了沿断层平面的滑动（地震力矩）的异质分布。我们发现位于hypocentet东南部的一个单一的绿色（一个强斑），然后通过沿kego断层的东侧厚的季季层散发出的强大动作，并在城市中心进行了广泛的建筑物损害调查，并进行了广泛的建筑物损害调查，损害统计量的结构性，构建年龄，构建年龄的损坏统计量。我们还调查了其他类型的损害，例如人类伤害，室内损害，液化损害和滑坡。我们发现，在KEGO断层的东侧，建筑物的损坏比更大，并且较旧的建筑物造成了更严重的破坏。我们还阻碍了室内的损害在很大程度上取决于故事的数量。我们应该注意，损害主要发生在非结构性组件中，这可能有助于防止主要结构组件的进一步损害。3）3）通过将假定的串动作与观察损害进行比较，我们研究了非线性响应分析模型的适用性。通过使用损坏在hyogo-ken Nanbu地震期间建立的模型，我们认为计算出的损害比的调整远远超过观察到的，因此我们可能需要调整我们的预测模型，以进行中等严重的输入