2025 Volume 4 Issue 1 Pages 220-229
The deformation progression scenarios after third-party damage prevention measures were developed for bridge superstructures and substructures in areas with high amounts of anti-freeze application, and differences were observed in the progression of deformation due to differences in water leakage, water transmission, and other factors. The results also revealed differences in the gradient of increase in cumulative damage area depending on the presence or absence of deformation progression. Bridges constructed after the minimum cover was specified may have experienced less deformation due to insufficient cover, and bridges constructed after durability considerations were included in the design criteria may have experienced less deformation related to durability considerations. Transitions in damage classification due to insufficient cover were predicted using state probability distributions based on Markov transition probability matrices, and the differences between bridges with and without cover provisions were clarified.
