The Research Of Steel-Concrete Hybrid Tower Of The Wind Turbine

The height and cross section of tower as the main of carrying the weight of wind turbine is increasingly higher and bigger, its lead to the problem of manufacturing and transportation of the tower, especially the issue of transportation as the wind turbine become more power. At the same time, the structure of concrete will be applied possibility in wind turbine because of the advantage of antisepticise and transportation easily relative to the steel tower. The paper is base of the steel structure ,the concrete structure, the structure dynamics and the finite element, studying the steel-concrete hybrid tower on the way of nonlinear finite analyses, discussing the application of the finite element method on the concrete structure, and studying the difference of the ferroconcrete and the pre-stress concrete structure on carrying capacity. The paper analyses and compares on the several tower structure utilizing the finite element method, gaining the conclusion of the stronger carrying capacity, the better anti-split performance and the smaller stiffness of the pre-stress concrete structure. The paper study the application of the steel-concrete hybrid tower in wind turbine tower, doing the static analysis, the buckling analyses, the fatigue analysis, the mode analysis and anti-earthquake analysis in three condition, and educing one of the tower structure have the strong carrying capacity, the better anti-fatigue and anti-earthquake ability. And the paper has combine strength, stability and flexibility theory to discuss the strength, stiffness and stability, and gain the relation of the height of concrete segment of tower and the dimension of section and its relation curve. In end, the paper offer the theory to support the pre-stress steel-concrete hybrid tower applied in wind turbine and so the higher structure.