Research on Strengthening Structure of Converter Valve Tower in High Seismic Intensity Area

In order to meet the seismic requirements in high earthquake intensity areas, a valve tower being developed was taken as the research object to be improved. Firstly, the finite element model of the valve tower was established. On the basis, four kinds of tower-top strengthened structure schemes were proposed. Secondly, modal analysis and response spectrum analysis of five seismic schemes were carried out with the same boundary conditions and simulation method. Finally, the simulation results were processed to verify the shock absorption effect of the design. The simulation results showed that the displacement of the top of the valve tower was large under the earthquake condition. Using the tower-top strengthened structure schemes, the displacement could be effectively reduced. Among them, the 30-degree tower-top strengthened structure scheme had a better effect on both reducing the stress as well as the displacement which aimed to provide a basis for structural design of valve tower in high earthquake intensity areas.