有限元法在坝体加固后结构应力计算中的应用

Application of Finite Element Method in Calculation of Structural Stress After Dam Body Reinforcement

对雷公滩水库大坝进行除险加固方案设计,通过有限元复核计算,分别建立溢流坝段、非溢流坝段及灌溉发电输水干管坝段三个典型断面有限元弹塑性模型,对坝体加固前后各工况下应力计算分析。可知应力分布及大小均满足规范要求。同时,在此基础上提出参数建议值.结果可对类似除险加固工程设计提供参照。

The dam of Leigongtan Reservoir is designed to eliminate danger and strengthen the plan.Through the finite element review and calculation,three typical sections of the overflow dam section,the non-overflow dam section and the main dam section of irrigation,power generation and water transmission are established respectively.The plastic model is used to calculate and analyze the stress under each working condition before and after the reinforcement of the dam body.It can be known that-the stress distribution and size meet the requirements of the specification.At the same time,on this basis,the proposed parameter values are put forward,and the results can provide a reference for the design of similar danger-removing reinforcement projects.