Response of Earth Dams During the Loma Prieta Earthquake

该项目是NSF/USGS的一部分。 国家地震局的倡议 减少危害计划（NEHRP）， 调查洛马普列塔的影响 1989年10月17日地震。 超过100个土坝位于一个 距离约100公里， 这场地震的源头。 的目的 项目是详细评估两个地球 这些母鼠被显著地仪表化， 触发了仪器 在地震期间。 此外，为了 可用的范围， 其他大坝，以及其他信息 关于这些水坝的信息， 并将在一个单一的 其他用户可以使用的文件。 这两座大坝分别是圣胡斯托大坝， 圣路易斯大坝高300英尺 高 这些大坝分别约为40 80 km和80 km的能量释放区。 土壤和地质数据都是可用的 水坝 详细的一维和二维 正在进行分析，以便 动态剪应变评估 材料的特性包括： 每个大坝基础系统，并检查 各种现有分析的充分性 计算响应的程序 地震时的土坝 这是第一次如此详细的 分析可以通过测量 地震反应记录在几个 一个土坝的位置。

This project is part of the NSF/USGS initiative within the National Earthquake Hazard Reduction Program (NEHRP) to investigate the effects of the Loma Prieta earthquake of 17 October 1989. Over 100 earth dams were located within a distance of approximately 100 km from the source of this earthquake. The aim of this project is to evaluate in detail two earth dams that were significantly instrumented and in which the instruments were triggered during the earthquake. In addition, and to the extent available, the recordings from other dams, together with other information about these dams, are also being collected and will be made available in a single document that can be utilized by other users. The two dams are the San Justo Dam, 150 ft high, and the San Luis Dam, which is 300 ft high. These dams are respectively about 40 km and 80 km from the zone of energy release. Soil and geologic data are available for both dams. Detailed one- and two-dimensional analyses are being conducted in order to assess the dynamic shear-strain characteristics of the material comprising each dam-foundation system and to examine the adequacy of various available analytical procedures for calculating the response of earth dams during earthquakes. This is the first time that such detailed analyses can be conducted with measured earthquake response records at several locations of an earth dam.