An Assessment of Soil Liquefaction Analyses from Obervationsof the Effects of the 17 October 1989 Loma Prieta Earthquake in the San Francisco Marina District

本项目涉及所吸取的经验教训， 1989年10月17日北方加州 (Loma普列塔）地震。 这是一个 继续开展已资助的工作 通过探索性的小额赠款， 研究（SGER）计划：目标 该奖项是收集易腐烂的数据， 液化砂沸腾， 地表位移 旧金山弗朗西斯科滨海区 从洛马普列塔地震。 本次继续研究的目的 项目是：补充收集的数据 与滨海区的现有数据;以 在实地观察的基础上， 现场和实验室测试;编制和 为案例研究记录完整的数据集 液化及场地分析 放大;使用这些数据进行评估 集合，一维方法的网站 放大和液化;以及 建立非线性有限元模型， 分析站点扩增， 滨海区液化 洛马普列塔地震 由此增进了对 目前的液化分析方法将 适用于其他有风险的领域， 地震引起的液化，如 洛杉矶海岸，其地质 条件具有相关的相似性， Marina District附近的景点

This project addresses the lessons learned from the 17 October 1989 Northern California (Loma Prieta) earthquake. It is a continuation of the work that was funded through the Small Grant for Exploratory Research (SGER) program: the objective of that award was to collect perishable data on the liquefaction sand boils and the superficial ground displacements in the Marina District of San Francisco resulting from the Loma Prieta earthquake. The objectives of this continuation research project are: to supplement the data collected with existing data on the Marina District; to complement the field observations with in- situ and laboratory tests; to compile and document a complete data set for case study analysis of liquefaction and site amplification; to evaluate, using this data set, the one-dimensional methods of site amplification and liquefaction; and to develop a nonlinear finite element model to analyze the site amplification and liquefaction of the Marina District during the Loma Prieta earthquake. The resulting improved understanding of the present methods of liquefaction analysis will have application to other areas at risk from earthquake-induced liquefaction, such as the Los Angeles coast, whose geological conditions possess relevant similarities to those of the Marina District.