Steel Pipe Concretes Trellis Type Three Extremity Column Wind-driven Generator Tower Stress Performance Research

Along with wind-driven generator generating capacity's day-by-day enlargement, the wind-driven generator tower also gradually increases highly with the tower crown weight, thus is getting higher and higher to the wind-driven generator tower's stress performance requirement. In order to cause the wind-driven generator tower stress to be more reasonable, the structure material obtains a better display as well as the development steel pipe concrete structure use scope, the rich wind power generation tower structure's form, the optimization wind power generation's economic efficiency, breaks through as a result of the transportation condition to the tower high limit, this article, in the summary analyzes domestic and foreign about the wind-driven generator tower research and in the application present situation foundation, proposed the steel pipe concretes trellis type three extremity column wind-driven generator tower.This article refers to the Inner Mongolian Baiyunebo area the 1.5MW awl tube wind-driven generator tower, designs the steel pipe concretes trellis type three extremity column wind-driven generator tower, and carries on to its scale model plans the static test, studies its endogenic force change and the destruction process, stagnates the performance, the supporting capacity, the ductility and consumes energy stress performance and so on ability.The findings indicated: The steel pipe concretes trellis type three extremity column wind-driven generator tower structure P-Δstagnates the curve to assume is asymmetrical full"spindle-shaped", is not obvious"pinches shrinks"the phenomenon, explained that it has the good stress performance and consumes energy ability; The steel pipe concretes trellis type three extremity column wind-driven generator tower structure's forward supporting capacity is smaller than the reverse supporting capacity, but the forward ductility coefficient is bigger than the reverse ductility coefficient, the reverse ductility coefficient is 2.4; Steel pipe concretes trellis type three extremity column wind-driven generator tower structure not obvious intensity degeneration, but the rigidity degenerates quickly. Had understood initially through these research results the steel pipe concretes trellis type three extremity column wind-driven generator tower's stress performance, and provides the theory basis and the experimental foundation for the steel pipe concretes trellis type three extremity column wind-driven generator tower's further research...