The main factors causing damage to steel structures are: ) Insufficient structural bearing capacity caused by load changes, extended service, changes in specifications and procedures, etc. ) Deformation, distortion, disability, dents, etc. of components before steel structure installation due to various accidents. , resulting in weakening of component sections, warping of rods, cracking of connections, etc.
3) Deformation, cracking and warping of components or connections caused by temperature differences
) Corrosion and electrochemical corrosion due to erosion of chemical substances Resulting in weakening the cross-section of steel structure components
) Others include errors in design, production, construction, and illegal use and operations during service.
There are three main technical measures to strengthen steel structures:
) Section reinforcement method: use steel to reinforce parts or along the entire length of the component, and connect them as a whole so that they can jointly bear stress
) Change Calculation diagram: add additional supports, adjust load distribution, reduce internal force levels, force displacement of superstatically indeterminate structural supports, and reduce stress peaks
3) Prestressed cable method: use high-strength cables to reinforce weak structures link or improve the overall bearing capacity, stiffness and stability of the structure.
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Causes and reinforcement methods of steel structure engineering damage