Earthquake Analysis, Design, and Safety Evaluation of Concrete Dams

该项目的研究是 制定更好的程序， 抗震分析与设计 混凝土大坝，一个重要 国家组成部分 基础设施系统， 水和电 研究 解决了一些最重要的 需要解决的问题： (1)空间考虑 地震输入变化 在峡谷周围， 对拱坝反应影响;（2） 坝基加固处理 分析拱的岩石相互作用 （3）计算 地震引起的滑动， 重力的摇摆位移 大坝整体，以及发展 改进的倾覆准则 和滑动稳定性;以及 (4)改进的水模型- 沉积-岩石相互作用 分析程序和计算机 将开发软件， 系统的系列分析将 进行开发， 基本理解本 各种因素的重要性 影响地震反应 混凝土大坝。 发展和结果 从这次调查中 将有助于更好地评估 混凝土坝对 地震地面运动，因此 提高评估能力 现有结构的安全性 和设计建议， 待建造的结构。

The research under this project is to develop improved procedures for the earthquake analysis and design of concrete dams, an important component of the national infrastructure system for supply of water and power. The research addresses some of the most important issues that need to be resolved: (1) consideration of spatial variations in the earthquake input around the canyon and their influence on arch dam response; (2) rigorous treatment of dam-foundation rock interaction in analyzing arch dames; (3) computation of earthquake-induced sliding and rocking displacements of a gravity- dam monolith, and the development of improved criteria for overturning and sliding stability; and (4) improved modeling of water- sediment rock interaction. Analytical procedures and computer software will be developed and a systematic series of analyses will be performed to develop a fundamental understanding of the significance of various factors influencing the earthquake response of concrete dams. The developments and results expected from this investigation will enable better evaluation of the response of concrete dams to earthquake ground motion, thus improving the capability to assess the safety of existing structures and of designs proposed for structures to be constructed.