The main cause of steel structure damage

The main factors of steel structure damage are:

(1) Due to load changes, expired use, code and procedure changes lead to insufficient structural bearing capacity, steel structure engineering and general concrete structure engineering has a service life, especially after multiple uses, in strict accordance with the standard maintenance, often observe the geological structure and stress surface, to achieve safe use.

(2) Due to a variety of accidental deformation, distortion, disability, depression, etc., resulting in weakening of component section, rod warping, connection cracking, etc. Because steel structural parts can be recycled, many steel structural parts after repeated use, material size and stress parameters change, some without professional construction design, prone to engineering accidents and hazards.

(3) Under the action of temperature difference, the component or connection is deformed, cracked and warped. Since the coefficient of thermal expansion of metal building materials such as steel is higher than that of concrete buildings, in summer or warm weather, close attention should be paid to the change of the main structural parts of the steel structure to avoid the risk of accidents.