Ground Motion and Liquefaction Study of Fill Soils in San Francisco - 1989 Loma Prieta Earthquake: Collaborative Research

这项研究计划是主动收集的一部分， 1989年10月17日北方 加州（洛马普列塔）地震。 这是一个与Jean-Lou教授合作的项目 普渡大学的查莫。 地球技术 位于加州长滩的美国加州电力公司正在协助 获得现场数据：此外，Geoffrey Martin博士 和地球技术公司的爱德华·卡瓦赞健 为项目提供技术支持。 克拉夫医生， 1979-1985年期间， 调查了土壤反应和土壤故障预计在 由于大地震，海湾地区：然而， 洛马普列塔地震的影响 似乎比预期的更广泛，部分 因为地面运动比预期的要严重 十年前的数据。 该项目利用 这些以前的研究，集中在遭受的地区， 重大的地面故障，如滨海区。 与此同时，它正在利用对 地面故障机制，已发生的，因为 进行了原创性研究。 该项目的目标是：收集有关 自1980年以来获得的岩土工程数据;绘制地面图 重要的特征，以确定 液化和地面放大效应;执行约 30次圆锥贯入试验，在先前试验 已进行;将上述信息组织成一个 计算机化数据库;并对 实地观察和获得的数据之间的相关性 1989年地震前后。

This research program is part of the initiative to collect perishable data resulting from the 17 October 1989 Northern California (Loma Prieta) earthquake. This is a collaborative project with Professor Jean-Lou Chameau at Purdue University. The Earth Technology Corporation, Long Beach, California, is assisting in obtaining the field data: in addition Drs. Geoffrey Martin and Edward Kavazanjian of Earth Technology Corporation are providing technical assistance to the project. Drs. Clough, Chameau, and Kavazanjian during the period 1979-1985 investigated the soil response and soil failures expected in the Bay Area as a result of a large earthquake: however the effects observed as a result of the Loma Prieta earthquake appear to be more extensive than was expected, in part because the ground motions were more severe than anticipated from data existing ten years ago. The project is utilizing these previous studies, focusing on the areas that suffered significant ground failures, such as the Marina District. At the same time it is using the improved understanding of ground failure mechanisms that has occurred since the original studies were undertaken. The objectives of this project are: to gather relevant geotechnical data obtained since 1980; to map ground features that are important to identify the extent of liquefaction and ground amplification effects; perform about 30 cone penetration tests at locations where earlier tests had been conducted; organize the above information into a computerized data base; and make preliminary assessments of the correlation between field observations and data obtained before and after the 1989 earthquake.