The Initial Geometric On Research Of Constructional Measures Of Large Steel Silos

At the beginning of last century, steel silo has started to widely build and used,As a combination of rotating thin-shell structure, The mechanical behavior, the failure criterion, etc are unusual complicated, in the vertical pressure and normal pressure under the joint action of silo wall, has led to a lot of damage collapse accident. As a typical cylindrical shell structure, at the initial shortcomings of steel silos subject to axial compression is very sensitive, so the adoption of reasonable measures to improve the structural stability of the silo is imperative.In this paper, the use of norms of our country and abroad in a steel silo to load, intensity and stability were calculated to verify, And comparative analysis of results. In the calculation, the domestic norms of more economical. Design for stability, domestic and international norms in the design eidos is consistent, If storage does not include the effects of differences in load, according to my design and in accordance with European norms regulate the outcome of the design is not more than 20% of the difference.In this paper, through numerical analysis, Including the linear eigenvalue buckling analysis, Geometric nonlinear analysis and geometric nonlinear, material nonlinear analysis of the dual, From a stiffening rib range of different settings, width-thickness ratio of stiffening rib, stiffening rib spacing, the thickness of stiffening rib etc, on the steel silo structure and stability of performance. Studied the different tectonic stiffening rib impact on stability of performance of steel silo structure..Analysis showed that the impact of silo wall buckling bearing capacity major factor is stiffening rib range of different settings, which are closely related to the buckling mode; Followed by stiffening rib spacing and thickness of the silo wall is buckling bearing capacity of the impact of key parameters, But it can not simply stiffening rib with the width-thickness ratio to determine the bearing capacity of the silos.