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Engineering Determination of Scenario Earthquakes and Development of Seismic Hazard GIS

情景地震的工程确定与地震灾害GIS的开发

基本信息

批准号：
07555635
负责人：
KAMEDA Hiroyuki
金额：
$ 0.96万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555635/
关键词：
probabilistic scenario earthquakes contribution factor of seismic sources seismic hazard risk-consistent earthquake ground motions seismic hazard GIS hazard map 確率論的想定地震

项目摘要

The results of this study may be summarized as follows.(1) It was proved that the concept of "probabilistic scenario earthquakes" can be applied to the assessment of "low frequency-high impact disasters." The concept is useful in that it constitutes a straightforward bridge between scenario earthquakes and probabilistic seismic hazard analysis which have been discussed in entirely separate contexts. The usefulness of probabilistic scenario earthquakes have been demonstrated through case studies for Kobe as linked with the occurrence of the Hyogoken-nanbu Earthquake as well as other major Japanese cities.(2) A simple and rigorous method was developed for evaluation of nonlinear soil amplification of earthquake ground motions. The subject is important in microzonation for regional disaster mitigation planning. The method proposed herein consists of the conversion factor between the basement motion and the free surface motion.A frequency dependent equivalent linearization technique was used for the analysis of nonlinear ground response.(3) Usefulness of the geographic information systems (GIS) was demonstrated for assessment of the probabilistic scenario earthquakes and risk-consistent earthquake ground motions. Hazard maps using probabilistic scenario earthquakes were proposed, and a case study has been performed for a region in western Japan.

本研究的结果可总结如下。(1)证明了概率情景地震的概念可以应用于“低频度、高影响灾害”的评估。“这一概念是有用的，因为它构成了情景地震和概率地震危险分析之间的直接桥梁，这两种分析是在完全不同的背景下讨论的。通过对与兵库县南部地震发生有关的科比和日本其他主要城市的案例研究，证明了概率情景地震的有用性。(2)本文提出了一种简单而严格的计算土壤非线性地震动放大率的方法。该课题对区域减灾规划的小区划具有重要意义。该方法通过引入基底运动与自由面运动之间的转换因子，采用频率相关等效线性化技术分析地基非线性响应。(3)证明了地理信息系统（GIS）在概率情景地震和风险一致性地震地面运动评估中的有效性。提出了使用概率情景地震的灾害地图，并对日本西部的一个地区进行了案例研究。