Analyse The Causes Of Steel Structure Instability And The Avoidance Of Steel Structure Accidents

Steel structure projects, fundamentally, involves the use of metal steel as the primary material in constructing various structural parts such as beams, columns, and trusses from sections like I-beams and steel plates. The connection methods vary due to the different materials used, including welding, bolting, and riveting. A qualified steel structure building must adhere to safety in both construction and design, following steel structure design drawing and ISO9001 standards, and must be constructed according to industrial regulations. Selecting a safe installation team is very important, which involves having a standardized team with specific construction requirements and company standards. An excellent installation team is the core of a steel structure company.

Steel framed structures are widely used due to their numerous advantages over concrete. However, instability in prefabricated steel buildings, which occurs when the load-bearing capacity reaches its limit, can lead to accidents. Understanding the causes of instability is essential to prevent such incidents.

There are three main types of steel framed structures instability:

Bifurcation Buckling: This involves the complete axis and mid-surface under external forces, also known as branch point buckling, and includes cylindrical shells under pressure.

Ultimate Load Buckling: This occurs when eccentrically compressed members can no longer maintain stability after reaching a certain degree of plastic deformation, including bi-directional bending members.

Snap-through Buckling: This type does not have a bifurcation point or an ultimate load point but can still lead to significant deformations that must be avoided to prevent structural damage.

Factors contributing to steel structure workshop accidents include:

Design Errors: Poor design due to a lack of experience or understanding of stability concepts can lead to accidents.

Manufacturing Issues: Initial curvature, eccentricity, and residual deformations from welding affect stability.

Insufficient Temporary Support: During installation, the steel frame structure must be supported to maintain stability.

To prevent accidents, measures include:

Improving Designers' Qualifications: Enhancing the professional quality of designers to ensure a comprehensive understanding of stability factors and accurate calculations.

Reducing Defects in Steel Frame Structures: Controlling defects such as initial curvature and eccentricity through proper manufacturing processes.

Safety in Construction: Implementing safe lifting plans and temporary support setups to ensure stability during installation.

Proper Use of Steel Structures: Regular inspection and maintenance to prevent the use of damaged light weight steel framed structures and consulting with professionals before altering the load-bearing capacity of components.