Structural Analysis and Computer Modelling of Steel Frame Base on Stiffness Method

The main purpose of this paper is to analyze and calculate the structure using the stiffness method to obtain various structural data. At the same time, different loading conditions, including wind load, self-weight, and live load, are considered to assess their impact on the structure's behavior, with wind load being the most critical factor. In the paper, simulations are performed through calculations to evaluate these effects. Subsequently, the structure will be designed and optimized in accordance with relevant Australian standards. All the coefficients and calculation formulas mentioned in the paper can be referenced from the standards cited. All calculation and modeling processes will be carried out in MATLAB to simplify the design steps and quickly obtain design results, by calculate the capacity of each material, and facilitates the selection of appropriate materials for the structure's members. This enables automated analysis and design, meeting the safety and serviceability requirements of the structure.