How can wind-resistant design be considered in the design of steel structures?

Considering wind-resistant design in the design of steel structures can be approached in several ways:

Calculation of wind loads: First, wind loads need to be calculated based on local meteorological data and building structure codes. This includes determining the standard value of wind pressure, wind vibration coefficient, body shape coefficient, etc., to obtain the wind loads on the structure. The results of these calculations will be used as the basis for subsequent structural design and component sizing.

Structural selection and layout: In structural selection, the structural form with better wind resistance should be chosen. For example, for high-rise buildings or large-scale plants, structural forms with high overall stiffness and stability such as frame-supported structures and cylinder structures can be adopted. At the same time, in the structural layout, the structural stress should be uniform, and the transmission path should be clear, to avoid stress concentration or weak links.

Component design and node processing: When designing components, cross-section design should be carried out according to the wind load calculation results to ensure that the components have sufficient bearing capacity and stability. For the key nodes, such as the connection nodes of beams and columns, support nodes, etc., detailed calculation and design should be carried out to ensure that the nodes will not be damaged under the wind load. At the same time, node connections should be firm and reliable to avoid loosening or deformation.

Overall stability analysis: In addition to the calculation and design of individual components and nodes, it is also necessary to analyze the overall stability of the structure. This includes consideration of nonlinear factors such as second-order effects and P-Δ effects of the structure, as well as the overall buckling and instability of the structure. Through the overall stability analysis, the overall performance of the structure under wind load can be evaluated to ensure the safety and stability of the structure.

Consideration of wind vibration effects: For high-rise buildings or large flexible structures, wind vibration effects may be more significant. Therefore, the impact of wind vibration also needs to be considered in the wind-resistant design. This includes calculating wind vibration coefficients, setting dampers, and other measures to minimize the impact of wind vibration on the structure.

Adding windproof construction measures: In the design of steel structures, some windproof construction measures can also be taken to improve the wind resistance of the structure. For example, setting windbreaks on the windward side, setting compression steel plates on the roof, etc. can effectively reduce the impact of wind load on the structure.

To summarize, considering wind-resistant design in steel structure design needs to start from many aspects, including wind load calculation, structural selection and layout, component design, and node processing, overall stability analysis, consideration of the impact of wind vibration, and the addition of wind-resistant structural measures, etc. These measures together constitute a complete system to ensure the safety and stability of the structure under the action of strong winds such as typhoons. These measures together constitute a complete system of wind-resistant design of steel structures to ensure the safety and stability of the structure under the action of strong winds such as typhoons.