Research on decision and risk analysis for portal frame

Abstract

As lightweight and high-strength structures, steel structures are gradually widely used in various buildings, such as high-rise buildings and industrial plants. After comparing various probability analysis methods, Monte Carlo simulation is chosen to analyze the moment of inertia design value for a non-sway steel frame. This paper mainly introduces the engineering load and reliability design principles of gantry steel frames. By consulting specifications and using relevant calculation formulas and basic parameters, different engineering load effects are discussed and calculated. After completing the load condition calculations, the resistance design value is calculated by using the limit state design principles. Finally, the sectional dimension design is conducted based on Monte Carlo simulation. By means of limit state design and Monte Carlo simulation, the ideal design value for calculating the moment of inertia can be easily calculated. Through these analyses, the superiority of Monte Carlo simulation in analyzing the failure probability of complex buildings is demonstrated. Unlike other methods, it does not need to compute functions of various factors in advance.