Development of Prototype of Earthquake Damage Assessment System for Highway Networks

日本公路公共公司（JH）在1995年Hyogoken-Nambu（Kobe）地震前部署了123个加速器，以便在早期阶段收集地震信息，以建立有效的交通控制。JH在Hyogoken-Nambu地震后进一步部署了202个新的地震仪。新的仪器可以衡量光谱强度和仪器JMA强度（如峰值地面加速）。使用这些仪器中的地震信息。JH closes expressways for safety inspection if the PGA exceeds 80 cm/s-D12-D1。本现行的条例标准需要进行评估，以确定仪器数量的增加、新仪器的高度敏感性和最近在日本受到破坏和非破坏的地震的经验。在本研究中，对高速公路结构和强地面运动指数的影响之间的关系被调查。Hyogoken-Nanbu地震岩收集的高速公路结构数据的损坏和基于地理信息系统（GIS）和Kriging技术估计的高速公路运动指数的地面运动指数。在这一方法中，记录的数据在记录网站和强烈运动指标的关注关系被认为是一个趋势组成部分比较了这些结果，将高速公路结构的脆弱性曲线与Hyogoken-Nambu地震是构建的。也就是说，拟议的脆弱性曲线仍然是有保留的，他们可能会被用于对日本到地震的高速公路结构造成的损害估计。通过使用一个时间表网络组合，提出的方法可以很容易地引入高速公路网络的实时损伤评估。

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.