A Reliability-based Methodology for Considering Corrosion Effects on Fatigue Deterioration in Steel Bridges - Part II: Case Study of Neka Bridge

作者：Sahrapeyma Ali^*; Marefat Mohammad S; Hosseini Abdollah

来源：International Journal of Steel Structures, 2013, 13(4): 657-670.

DOI：10.1007/s13296-013-4007-9

• truss
• railway Neka bridge
• corrosion-fatigue
• micro-environment
• corrosion pattern
• MR%26R effectiveness
• deterioration profile
• maintenance

The methodology presented in Part I is examined on Neka Bridge, a railway, truss bridge in northern Iran. The study includes: considerations of climate and air pollution, extraction of the stress-time histories from the FE model, prediction of future traffic volumes in a probabilistic manner and assessment of the effects of MR%26R actions on the deterioration profile. PDF of D is determined using Monte Carlo simulations, and the reliability profile is calculated from the performance function. The study shows that for a target reliability of 2.0, the fatigue life of the bridge is reduced by either 29% or 31% if dose-response function or qualitative-based y-t function is used, respectively.

• 出版日期2013-12