Common Problems of Wind Loads in Steel Structure Design

The common problems of wind load in steel structure design mainly include the following aspects:

1. Large differences in wind load values: Different design software or methods may lead to significant differences in wind load values. For example, the wind vibration coefficient is considered by default in SATWE, while this coefficient may not be considered in the 3D design of the portal frame, which will lead to inconsistency in the wind load magnitude values. Therefore, it is necessary to ensure that the correct wind load calculation methods and parameters are used in the design process.

2. Different points of wind loads: The point of action of wind loads on steel structures may vary depending on the design method. For example, wind loads may be uniformly distributed along the columns in the 3D design of portal frames, whereas in SATWE the loads may be simplified to act at the top of each floor. This difference may lead to inaccurate structural force analysis.

3. Determination of length coefficient: The length coefficient is a key parameter in the design of steel structures, especially for large structures such as factory buildings. If the support is not properly set or the calculation method is inaccurate, it may lead to the wrong determination of the length coefficient, which in turn affects the safety and stability of the structure.

4. Neglect of the role of the floor slab: In some steel structure designs, the influence of the floor slab on the overall performance of the structure may be neglected. This may lead to inaccurate wind load distribution and transfer, thus affecting the force analysis and design of the structure.

5. Influence of simulated construction: The calculation method of simulated construction may have a greater influence on the result of constant load calculation. Therefore, it is necessary to choose the simulation construction method reasonably in the design process to ensure the accuracy of the calculation results.