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Safety Analysis for the Large-scale Silo

Author: TongJun
Tutor: MengPeiSheng
School: Huazhong University of Science and Technology
Course: Engineering Mechanics
Keywords: Steel silo Security Finite Element Numerical Analysis Flexion Reinforced
CLC: TU375
Type: Master's thesis
Year: 2011
Downloads: 18
Quote: 0
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Abstract


With the socio-economic development of the material resources of the rich , more and more resources need to be stored and processed silo applications more widely , so also will improve the security requirements of the structure . With much circular steel silos , relative to traditional reinforced concrete silo has a simple structure , short cycle , quick, and other characteristics . Circular steel silos generally strengthen the structural strength and stiffness of the by spiral steel shell , ring ribs and studs , as well as strengthen the top of the strength of the truss composite structure , the force behavior and failure criterion is quite complex , the boundary conditions sensitive steel the silo destruction of the accident , when the existing norms , a common form of the destruction of the cylinder wall buckling under vertical load . By reasonable structure design , we can improve the safety performance of the structure . First a steel silos research background, the use of large-scale general-purpose finite element software ABAQUS to establish a three-dimensional model of the silo , carried out a detailed analysis and checking of structural static response , to meet the requirements of its security . And numerical analysis using finite element methods , including linear eigenvalue buckling and geometric nonlinear buckling analysis and calculation of the vertical loads , the buckling load of the structure is obtained . Against the cylinder wall section , the interception of the previous paragraph , using the linear eigenvalue buckling analysis of the thickness of the wall of the cylinder , the the stiffening rings interval , plus the number of studs and reinforced sectional dimensions of the cylinder wall buckling load . The results show that the buckling load and the wall thickness is proportional to the square of the relationship , and reinforced cross-sectional area of ??a linear relationship , and the relationship with polynomials and least squares fit respectively . Reinforced the more the number , the greater the buckling load . When the the reinforced interval and axial half - wave number related stiffening rings , the buckling load is relatively large , studs , reinforced came from a number of obvious buckling of the tube wall , reinforced the growing number tendons the buckling obvious . Buckling under axial compression in the cylinder wall , and a reasonable stiffened a certain significance in the actual project .

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CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Reinforced concrete structures
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