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The Initial Geometric on Research of Constructional Measures of Large Steel Silos

Author: AoXiaoQin
Tutor: ChenXiangRong
School: Xi'an University of Architecture and Technology
Course: Structural Engineering
Keywords: Initial defect Steel silos Stiffener Specification Numerical Analysis
CLC: TU391
Type: Master's thesis
Year: 2009
Downloads: 25
Quote: 1
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Abstract


In the last century, has been widely steel silo construction and use . As a combination of rotating shell structure , its force acts , failure criteria , etc. quite complex , warehouse wall in the vertical pressure and a normal pressure buckling under the action has resulted in a lot of damage to collapse . As a typical cylindrical shell structure, steel silo when under axial compression is very sensitive to the initial defect , it is necessary to adopt reasonable measures to improve the silo structure stability. In this paper, the domestic and international norms on China's steel silo somewhere large floor load , strength and stability calculations were carried out , and the results were compared and analyzed. In load calculations , our specification more economical. In a stable design, domestic and international norms in the design concept is the same, excluding the impact of differences in material storage load , according to our standard design and results of the design according to European norms difference is not more than 20%. In this paper, numerical analysis methods, including eigenvalue buckling analysis , geometric nonlinear analysis and geometry , materials, double nonlinear analysis, from the stiffener setting range and location of the stiffener thickness ratio , stiffener spacing, stiffener thickness and other aspects of the stiffener steel silos for different tectonic stability performance. Analysis showed that the impact of the warehouse wall buckling capacity of the main factors is the stiffening rib setting range , followed by the stiffener spacing and thickness also affect the warehouse wall buckling bearing capacities of the important parameters ; but you can not simply use the stiffener thickness ratio to determine the cylinder warehouse capacity .

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CLC: > Industrial Technology > Building Science > Building structure > Metal structures > Steel
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