Structural Calculation and Analysis of Grid Processing Engineering Design

Structural Calculation and Analysis of Grid Processing Engineering Design

In the design of grid processing engineering, structural calculation and analysis are the key to ensuring the safety, stability, and economic rationality of the grid, and run through the entire process of the project.
Load calculation

Load calculation is the foundation of structural design, which is divided into dead load and live load. The dead load covers the self weight of the grid and the weight of the roof material, and should be accurately calculated based on the material specifications and quantities. Live loads include roof live loads, snow loads, wind loads, etc. The live load on the roof shall be determined according to the building function and specifications; Snow load and wind load need to be calculated according to local meteorological data and terrain specifications. Special buildings also need to consider special loads such as earthquakes and dust accumulation.

Internal force analysis

After completing the load calculation, we enter the stage of internal force analysis, with the aim of clarifying the stress on each member and providing a basis for member design. Common methods include spatial truss displacement method and finite element method. The spatial truss displacement method considers the truss as a spatial hinged rod system and solves the internal forces using equilibrium equations, which is applicable to regular truss structures. The finite element method uses computers to discretize the grid into elements, which can accurately simulate complex structures and loads, and is suitable for large and complex grid structures.

Stability calculation

Stability calculation is related to the safety of the grid structure and can be divided into overall and local stability calculations. The overall stability calculation prevents the overall instability of the grid structure, and the finite element method is commonly used to consider geometric and material nonlinearity. Local stability calculation focuses on members and nodes, ensuring their stability by controlling the aspect ratio of members and optimizing node construction.

Deformation calculation

Deformation calculation is mainly used to calculate the deflection of the grid structure, ensuring that it is within the allowable range and avoiding any impact on use and safety. Compare the calculated deflection with the allowable value in the specifications, and adjust the size or structural form of the members if it does not meet the requirements.

The structural calculation and analysis of grid processing engineering design cover load, internal force, stability, and deformation calculation, and are interrelated. Only by doing these well can we design high-quality grid structures.