Effect of Metal Corrosion on the Structural Reliability of the 3D Steel Frames

The worldwide design standards only consider safety or reliability at the beginning not concerning the deterioration of the material strength under the corrosive environment. This research presents an assessment method for reliability and durability of the 3D steel frame connections considering corrosion effects. A metal corrosion model which is proposed in previous studies was adopted to apply for this study. Monte Carlo simulation method is proposed and utilized to assess the reliability and durability of the 3D steel frames under corrosion. The random variables including the corrosion phenomenon, and applied load, have been considered. The safety deterioration of the steel structures due to the corrosion phenomenon until 100 years is investigated. Additionally, the effects of input parameters, which are safety factors and coefficient of variation, on the reliability of structures are examined in the present study. Finally, a verification of this study and previous results are performed, highlighting the capability of the proposed method.