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水轮机在水中受地震作用而引起的地震响应属于液体 弹性体的耦合振动问题。本文中首先简介求解机组在水中的动力特性的理论背景及计算方法 ,接着重点讨论在考虑机组 水体系的三维液 固耦合振动影响下 ,水轮机组受地震作用的动力学支配方程及用时程分析法求解的解法。最后介绍结合贯流式水轮机所得出的计算成果 ,并将其结果与不考虑水介质影响得出的结果进行了比较。
Earthquake response caused by earthquake in water turbine belongs to the coupling vibration problem of liquid elastomer. In this paper, the theoretical background and calculation method for solving the dynamic characteristics of a unit in water are briefly introduced. Then, the dynamic dominance equation of a hydro-turbine unit affected by the earthquake and the time-history analysis method are mainly discussed under the influence of the three-dimensional liquid-solid coupling vibration of the unit water system. Solve the solution. Finally, the calculation results obtained by the combination of tubular turbines are introduced and their results are compared with the results obtained without considering the influence of water medium.