Development of Prototype of Earthquake Damage Assessment System for Highway Networks

公路网震害评估系统原型开发

基本信息

批准号：
10558058
负责人：
YAMAZAKI Fumio
金额：
$ 7.87万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10558058/
关键词：
Expressway Earthquake Damage Traffic Control GIS Earthquake Ground Motion Peak Ground Acceleration Spectrum Intensity 地震計ネットワーク

项目摘要

In order to gather earthquake information at an early stage and to establish efficient traffic control, Japan Highway Public Corporation (JH) had deployed 123 accelerometers along its expressways before the 1995 Hyogoken-Nanbu (Kobe) Earthquake. JH further deployed 202 new seismometers after the Hyogoken-Nanbu Earthquake. The new instruments can measure the spectrum intensity and the Instrumental JMA intensity as well as the peak ground acceleration (PGA). Using earthquake information from these instruments. JH closes expressways for safety inspection if the PGA exceeds 80 cm/sィイD12ィエD1. This current regulation criterion needs to be examined considering the increase of number of instruments, the higher sensitivity of new instruments and the recent experiences for damaging and non-damaging earthquakes in Japan.In this research, the relationship between the earthquake damage to expressway structures and the strong ground motion indices was investigated. The damage data of expressway structures in the Hyogoken-Nanbu Earthquake were collected and the ground motion indices along the expressways were estimated based on observed records using geographic information system (GIS) and Kriging technique. In this approach, the recorded data are satisfied at the recording sites and the attenuation relations of the strong motion indices are considered as a trend component Comparing these results, fragility curves for the expressway structures due to the Hyogoken-Nanbu Earthquake were constructed. Although the proposed fragility curves are still tentative, they may be used in damage estimation of expressway structures in Japan due to earthquakes. Combining with a seismometer network, the proposed methodology can be easily introduced to a real-time damage assessment of expressway networks.

为了在早期阶段收集地震信息并建立有效的交通控制，日本公路公共公司（JH）在1995年Hyogoken-Nanbu（Kobe）地震之前已部署了123个加速度计。 JH进一步部署了202个新的地震仪，在北鸟地震发生后。新仪器可以测量光谱强度和仪器JMA强度以及峰值接地加速度（PGA）。使用来自这些乐器的地震信息。如果PGA超过80 cm/SIE D12，JH将关闭高速公路以进行安全检查。考虑到日本的仪器数量的增加，新工具的较高灵敏度以及最近在日本破坏性和无损地震的经历，需要检查当前的调节标准。在这项研究中，研究了对高速公路结构的地震破坏与强大的地面运动索引之间的关系。收集了纳南布地震中高速公路结构的损坏数据，并根据使用地理信息系统（GIS）和KRIGING技术的观察记录估算了沿高速公路的地面运动指数。在这种方法中，在记录位点满足了记录的数据，并且强烈运动指数的衰减关系被认为是比较这些结果的趋势成分，由于构建了由于noogoken-nanbu地震而引起的高速公路结构的脆弱曲线。尽管所提出的脆性曲线仍然是暂定的，但由于地震而导致日本高速公路结构的损害估计。与地震仪网络相结合，可以轻松地将提出的方法引入高速公路网络的实时损害评估。