大溪水库溢洪闸静动力三维有限元分析

摘要

主要介绍了应用大型通用有限元软件对大溪水库溢洪闸进行三维有限元静、动力分析的方法,采用更为合理的接触分析模型模拟侧向土压力作用下闸室底板与基岩的张开效应,研究探讨了闸室结构在各种工况下的变形及应力分布规律,进而了解闸室结构在设计条件下的工作形态,评价结构的安全性能,并根据三维有限元静动力分析成果优化了闸室的结构设计,使结构布置更为合理,在实际工程中取得了良好的效果.%This paper introduces the application of large-scaled general finite element software to the three-dimensional finite element static & dynamic analysis for the spillway gate of Daxi Reservoir. A more rational contact analysis model i8 usedto simulate the stretching effect between the bottom plate of gate chamber and the base rock under the action of lateral earth pressure. The deformation and stress distribution of the gate chamber structure under various working conditions have been studied. and furthennore. the working status of gate chamber structure under the designed conditions has been leamt and the safe performance of the structure has been evaluated. Based on the results of the three-dimensional finite element static & dynamic anajysis the structural design of the gate chamber has been optimized and the layout obtained is preferable, which achieved better effect in practical applications.