Defensive Design of Concrete Gravity Dams

本项目研究了五种不同的方案 混凝土坝的防御设计：1）a 键连接建在上部的一个 重力坝将被密封在 防止水侵入的上游面，2） 改变的横截面轮廓， 提高抗震性，3）轻质- 重量波峰部分， 减少质量，4）垂直后张拉 用钢筋束的颈部区域，以及5） 水动力隔离 在不同程度上，这些计划是 适用于新水坝的设计， 对现有设备进行改造。 他们将 通过专门的计算机程序进行调查 以前开发的线性和非线性 混凝土重力有限元分析 坝水基础系统 这种防御方案可以在 新水坝的设计和 现有的。

This project studies five different schemes of defensive design of concrete dams: 1) a keyed joint built into the upper part of a gravity dam which would be sealed at the upstream face to prevent water intrusion, 2) an altered cross-sectional profile for improved seismic resistance, 3) a light- weight crest portion with considerably reduced mass, 4) vertical post-tensioning of the neck region with steel tendons, and 5) hydrodynamic isolation. To varying degrees, these schemes are applicable to the design of new dams and to the retrofit of existing ones. They will be investigated by special computer program previously developed for linear and nonlinear finite element analysis of concrete gravity dam-water foundation systems. Such defensive schemes can be implemented in the design of new dams and in the retrofit of existing ones.