Development of an Integrated Early Warning and Structural Monitoring System to Real Time Earthquake Information

为了提高地震预警系统的附加值、可靠性和实用性，本研究开发了地震预警与结构监测一体化系统。调查的研究项目有；1)将结构健康监测与实时地震信息相结合，开发预警系统；2)考虑当地土壤条件，提高地震动预报精度；3)基于示范试验的EEWS在医院的有效利用；4)基于示范试验的EEWS在学校的有效利用。关于项目1)，开发并安装了在线地震观测系统，该系统位于太平洋沿岸附近的大贺分所（OBO）大楼和仙台东北大学土木工程与建筑科学学院的一栋大楼。综合地震预警系统已进行了示范性试验。针对第2项，提出了一种基于人工神经网络（ANN）的预测方法，利用OBO p波第一部分的传入波形，结合当地土壤条件，估算出更精确的地震动预测值。所提出的预测方法对宫城县大崎地震的适用性进行了验证。针对项目3)，在东北大学医院进行问卷调查，明确RTEI的需求，并提出有效的利用制度。为了进行示范试验，本研究在医院安装了实时地震信息接收器，并配有显示器和警示灯。针对第4项，制作了一个地震灾害模拟动画，用于原型模型的教学模式，并对其利用进行了研究。通过对宫城县及都市圈649所学校进行问卷调查，从教育现场掌握需求，促进EEWS在学校的应用。

In this study, the development of the integrated earthquake early warning system and structural monitoring system has been performed to enhance its added value as well as reliability and utility. The investigated research items are; 1) Development of warning system by combining structural health monitoring and real time earthquake information, 2) Enhancement of accuracy of ground motion prediction considering local soil condition, 3) Effective utilization of EEWS in hospitals based on demonstration test, 4) Effective utilization of EEWS in schools based on demonstration test.Regarding the item 1), the online earthquake observation system was developed and installed at Oshika Branch Office (OBO) building located near the Pacific Ocean coast and a building of Civil Engineering and Building Science of Tohoku University in Sendai. The integrated earthquake early warning system has been demonstratively tested. Regarding the item 2), a prediction method based on the Artificial Neural Network (ANN) has been proposed to estimate more accurate ground motion prediction using the incoming waveform of the first portion of P-wave from OBO and also local soil conditions. The applicability of the proposed prediction method has been verified for the Miyagi-ken Oki earthquakes. Regarding the item 3), a questionnaire investigation was performed at Tohoku University Hospital to clarify the needs of RTEI and effective utilization system has been proposed. To perform demonstration test, a receiver of Real-Time Earthquake Information was installed at the hospital together with display and warning lamps in this study. Regarding the item 4), a animation of earthquake disaster simulation was made for the education mode of the prototype model and its utilization has been investigated. A questionnaire investigation was performed for total number of 649 schools in Miyagi prefecture and metropolitan area to grasp the needs from education site and to promote the utilization of EEWS in schools.