| Column-supported steel silo, as a simple and economical structural, is widely used in industry fields including mining,metallurgy,grain and cement industry. In recent years, many scholars had studied steel silo structural behavior, especially for stability behavior. But most of studies were based steel silo structure on uniform supports. It is little that studying the structural behavior of steel silo on local supports, that bring the designers some difficulties. So practical steel silos have grave hidden dangers, some of which had collapsed. Based on a columon-support collapsed steel silo in a practical project, this paper systematically studied these steel silo structural mechanical properties and stability in numerical analysis including linear stress analysis, linear eigenvalue buckling analysis and non-linear buckling analyses. Otherwise, in this paper, effects of different design parameters were studied in columon-supports steel silo, and structural sensttive parameters were choosed reasonable. This paper main content is as follows:1,Based on field measurement and material experiment, the finite element model of columon-support steel silo was found. The calculation method of silo storage material load and calculation formula of silo storage material were studied, when storage material density was keeping varies.2,The columon-support steel silo bear storage material load stress, strain and distribution features were studied by linear stress way. The results show that, near the top of columon supported and transition junction, steel wall has stress-focus phenomenon and radial deformation is much big. Columon-support steel silo buckling deformation mode was obtained in eigenvalue buckling analyses method.The buckling deformation mode shows that steel wall at first buckled near the top of columon supported and the columon-supported is much stable.3,Columon-supported collapsed steel silo stability was studied in geometrically nonlinear and elastic-plastic buckling analysis. When the steel silo was geometrically nonlinear buckling analysis, the biggest von miss stress of silo wall and columon supported exceeds material yield strength. There exists a certain range plastic zone in silo wall near the top of columon supported.The columon-supported still is elastic.4,Based on buckling analysis, this paper further studied the structural stability effect from main geometric parameters, and determined reasonable sensttive parameters value ranges.5,Finally, in this paper all the results of research are summarizes and the further study suggestions are provided.The researched results in this article have the certain guiding sense and the reference value to reasonable design method of columon-support steel silo.
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