Study on the Stability Problem of Hydroelectric Station Penstock under External Pressure

摘要

The stabilization problem of steel penstock under external pressure is one of main control conditions of penstock design of hydroelectric station At present, because of factors of assumption conditions and boundary simplification, the various calculating methods of this problem have their limitations, sometimes even the results have great differences In this paper, the influences that diameter-to-thickness ratio of the steel tube，size and space of reinforce rings to losing stability and breach for reinforcing ring steel penstock is analyzed by artificial neural network and simulated annealing. Test results show that the method is feasible and its validity is verified. This paper provides an efficient solving path for stability problem of reinforcing ring steel penstock under external pressure.