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Assessment of Seismic Local-Site Effedcts at Plural Test Sites

多个试验场地的地震局部影响评估

基本信息

批准号：
11694134
负责人：
KUDO Kazuyoshi
金额：
$ 4.22万
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：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11694134/
关键词：
Strong Motion Prediction Site Effects International Test Sites Underground Structure Array Observation of Microtremors Earthquake Hazard Dense Array Observation of Earthquake Observation Simulation of Seismic Motion 地震動局地的影響微動アレー観測 /

项目摘要

This project concentrated to validate and discriminate the site effects on seismic motion that are inevitable for quantitative prediction of strong ground motion. The individual research projects were to develop a method for determining velocity structure, analyze the amplification (or de-amplification) factors and simulate seismic motion numerically. To determine S-wave velocity structure is generally far difficult compared with the P-wave prospecting : However, the surface wave Inversion using array analysis of microtremors, mostly developed in Japan, has great advantages than the current prospecting methods, especially in conducting at urban areas or sedimentary basins. It is very good opportunity to test the method at Euro-Seistest, because there exist lots of data to compare. During this project, the Turkey earthquake occurred and we introduce the method to understand the reason of localized damage distribution. We carried out the experiment at Grenoble basin where many seismological experiments and analysis have also been conducted. A small symposium was held in January 2002, to discuss and integrate the results, inviting the four distinguished 'researchers from oversea, (USA, France, Turkey, and Taiwan). Through this project, we could confirm an advantage of the study that simultaneously conduct geotechnical surveys and dense observation of earthquakes for site characterizations |n future work of predicting strong ground motion.

本计画的主要目的是验证与判别场地对地震动的影响，这是强地震动定量预测所不可避免的。个别研究项目是开发一种确定速度结构的方法，分析放大（或去放大）因素和数值模拟地震运动。横波速度结构的确定通常比纵波勘探困难得多，而主要由日本发展起来的利用地震动台阵分析的面波反演方法比现有的勘探方法有很大的优越性，特别是在城市地区或沉积盆地中进行。由于有大量的数据可供比较，因此在欧洲地震测试中检验该方法是一个很好的机会。在本项目中，土耳其地震发生，我们介绍了方法来了解局部损伤分布的原因。我们在格勒诺布尔盆地进行了实验，那里也进行了许多地震学实验和分析。2002年1月，我们邀请了四位来自海外（美国、法国、土耳其和台湾）的杰出研究者，举办了一个小型研讨会，讨论和整合研究结果。通过这个项目，我们可以确认研究的优势，同时进行岩土工程调查和密集的地震观测，以确定场地特征|未来的工作预测强地面运动。