The Effect of Atmospheric Corrosion on Steel Structures: A State-of-the-Art and Case-Study

Buildings

Armin Majidian¹  Luigi Di Sarno¹  George Karagiannakis² 

[1] Department of Civil Engineering and Industrial Design, University of Liverpool, Liverpool L69 3BX, UK;Department of Engineering, University of Sannio, 82100 Benevento, Italy;

关键词: atmospheric corrosion;    steel structure;    process unit;    petrochemical plant;    seismic assessment;    urban and industrial zone;   

DOI  :  10.3390/buildings11120571

来源: DOAJ

【 摘 要 】

Atmospheric corrosion can seriously affect the performance of steel structures over long periods of time; thus, it is essential to evaluate the rate of corrosion and subsequent modification of dynamic properties of a structure over different time periods. Standards and codes represent the general guidelines and suggest general protection techniques to prevent structures from corrosion damage. The available models in the literature propose the thickness reduction method that accounts for the exposure time of structures in corrosive environments. The purpose of this study is to review the existing corrosion models in the literature and report as well as compare their effectiveness in low (C2 level), medium (C3 level) and high (C4 level) corrosivity class in accordance with the ISO standard. Furthermore, the influence of corrosion loss during the lifetime of a structure is studied through a realistic case study model using FEM (finite element method) in both linear and nonlinear regions. The results showed that the corrosion can considerably affect the dynamic characteristics of the structure. For instance, the vibration period rose up to 15% for the C4 class and 100-year lifespan. Additionally, the corroded structure presented higher acceleration and drift demand, and the base reaction forces were reduced up to 60% for the same class and time period.

【 授权许可】

Unknown