Causes of steel structure damage and reinforcement technical measures

When the steel structure is also damaged, we need to find the immediate solution to the problem. The main factors that describe the damage of the steel structure are: 1) due to load changes, overtime service, changes in specifications and procedures, resulting in insufficient structural bearing capacity; 2) components Deformation, distortion, disability, depression, etc. due to various accidents, resulting in weakened section of the member, warpage of the member, joint cracking, etc.; 3) deformation or cracking of the member or joint under temperature difference; 4) due to chemical substances Corrosion caused by corrosion and electrochemical corrosion caused the structural section of steel structural members to weaken; 5) Others include errors in design, production, construction, and illegal use and operation during service.

There are three main technical measures for reinforcement of steel structures: 1) Cross-section reinforcement method: reinforcement of steel in part or along the entire length of the member, and jointing to make it work together; 2) Change calculation sketch: add additional support, adjust Load distribution, reduce internal force level, force displacement of statically indeterminate structural support, reduce stress peak; 3) Prestressed cable method: use high-strength cable to strengthen structural weak link or improve overall bearing capacity, stiffness and stability of structure .

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