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AN INTERDISCIPLINARY RESEARCH ON THE EFFECTS OF SURFACE GEOLOGY ON SEISMIC MOTION

地表地质对地震运动影响的跨学科研究

基本信息

批准号：
02305011
负责人：
TAKEUCHI Yoshihiro
金额：
$ 6.91万
依托单位：
OSAKA INSTITUTE OF TECHNOLOGY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1992
项目状态：
已结题

项目摘要

Recent researches into methodology of reduction of various damages caused by past earthquakes have presented problems that should be examined urgently from the view-point of aseismic engineering; that is, those of qualitative and quantitative evaluations concerning effects of surface geology on characteristics of seismic ground motion. In this study, effects of surface geology are discussed by evaluating the geotechnical underground model used in a prediction of earthquake ground motion. The necessary data for the prediction have been obtained by the geotechnical surveys of underground structure and earthquake observation of the area chosen as a test field. The method of prediction of ground motion adopted here was the blind prediction test by which an earthquake ground response at blind sites are estimated on the base of given input ground motion and geotechnical ground model. Ashigara Plain in Kanagawa Prefecture, was chosen as our test field. The participants of this project were pi … More cked out among researchers of seismology, civil engineering, structure engineering and so on in the fields of science and engineering as well. During the three- year research period, two national and one international symposia were carried out at the end of each year. The aims of these symposia were to make a co-operative examination and to exchange opinions between the participants of this project and other researchers and engineers of this field.The contents of this research were concerned mainly with the following six themes:(1) Geotechnical Survey of Underground Structure of a Test Field and Examination of Data of Geological Engineering(2) Evaluation of Underground Structure, Seismic Ground Motion Characteristics and Seismic Motion Characteristics by Microtremors Measurement(3) Observation of Earthquake Ground Motion of Ashigara Plain International Test Field and Evaluation of the Observation Records(4) Evaluation of Prediction Methods of Earthquake Ground Motion Considering a Surface Geology(5) Evaluation of Computation Methods of Prediction of Earthquake Ground Motion by Adopting the Blind Prediction Test(6) Examination and Arrangement of the Blind Prediction Test Conducted at Turkey FlatThe controversial points concerning the six above-mentioned subjects were discussed and summed up in the report of this research. Less

近年来有关减轻过去地震所造成的各种破坏的方法的研究，提出了从抗震工程的观点迫切需要研究的问题，即关于地表地质对地震动特性影响的定性和定量评价问题。在这项研究中，地表地质的影响进行了讨论，通过评估用于预测地震地面运动的岩土地下模型。预测所需的数据已通过地下结构的岩土工程勘察和选定为试验场的地区的地震观测获得。本文采用的地震动预测方法是盲预测试验，即根据给定的输入地震动和岩土地面模型，估计盲场地的地震地面反应。我们选择了神奈川县的足良平原作为试验田。该项目的参与者是PI ...更多信息地震学、土木工程、结构工程等科学和工程领域的研究人员也在研究这一问题。在三年的研究期间，每年年底举行两次国家和一次国际专题讨论会。这些研讨会的目的是让本项目的参与者与该领域的其他研究人员和工程师进行合作审查和交换意见。本研究的内容主要涉及以下六个主题：（1）试验场地下结构的岩土工程勘察和地质工程资料的审查（2）地下结构的评价，地震动特性和地震动测量特性（3）足良平原国际试验场地震动观测及观测记录的评价（4）考虑地表地质的地震动预测方法的评价（5）采用盲预测试验的地震动预测计算方法的评价（6）土耳其平原盲测测验的检验与编排本研究报告对上述六个问题的争议点进行了讨论和总结。少