三峡枢纽水工建筑物动力问题研究

Study of Dynamic Property and Dynamic Response for the Hydraulic Structure in the Three Gorges Project

本文简要介绍了三峡水利枢纽场址、工程地震危险性分析和地震动参数、水工结构的动态特性及动力响应的研究结果。分析与试验结果表明,结构动态特性优于一般重力坝,这种坝型有利于提高抗震能力。其它水工建筑物亦满足抗7度地震的要求。研究结果为结构方案选择与优化设计提供了依据。文中还提出了改进结构设计的建议。

This paper briefly reports the results of engineering seismic risk analysis and of the research in earthquake groud motion parameter, dynamic behavior and earthquake resistant behavior of hydraulic structure in the Three Gorges Project. The results of analysis show that dynamic behavior of the Three Gorges Project dam is better than usual gravity dams. This dam type is favourable for improving its earthquake resistant behavoir. Other hydraulic structures of the project can also satisfy the requirements of defence against an earthquake of intensity 7. These test and analysis results provide important basis for the scheme selection of the structure and optimization of design. The suggestion for improving structural design for the project has also been made.