Concrete Filled Steel Tubular Columns Lattice Tower Extremities Of The Mechanical Properties

In recent years, the wind business in China is developing very fast, has achieved greatsuccess, the installed capacity for2010already top the list of the world’s first; And the toweras wind power systems’s main support device, its structure, mechanical characteristics,design methods and reliability, and other aspects of the research in the domestic is basically ablank, and the wind power industry in the development of the harmonious.Based on the current research status of wind power tower of existing problems, thepaper with a1.5MW wind generators cone shape tower drum machine for reference object,basis of similarity theory design principle and stiffness of a steel tube concrete lattice framecolumn limbs wind generator model, through the tower of the model was low cyclic loadingtest, the thorough study on the structure of the carrying capacity, energy dissipation capacity,the internal force distribution law and the structure of the failure characteristics andmechanism of the mechanical characteristics; At the same time by ANSYS finite elementanalysis software of steel and concrete lattice frame column limbs wind generator isanalyzed theoretically, the tower will analyze the results, and the experimental results werecompared, both good agreement, and fitting out of the concrete filled steel lattice framecolumn limbs wind generator the restoring force model of tower structure.The results of the study show that: steel tube concrete lattice frame tower structurelimbs column hysteresis curve is full, stable, the spindle skeleton curves in the late loading,there was no significant level of basic keep down section, a structure destroy equivalentviscous damping coefficient when for0.23, show that concrete filled steel lattice framecolumn limbs wind generator with good mechanical properties of the tower, a furtherresearch and extension value.