The failure probability of reinforced concrete marine structures and cost optimization of maintenance

Moahammad Rahimi, Abdolhossein; Ghasri, Afshin; Sayebani, Mesbah; Esfandiari, Akbar

doi:10.22034/ijcoe.2026.585601.1243

The failure probability of reinforced concrete marine structures and cost optimization of maintenance

Document Type : Original Research Article

Authors

Abdolhossein Moahammad Rahimi ¹

Afshin Ghasri ²

Mesbah Sayebani ²

Akbar Esfandiari ²

¹ Department of Marine Engineering, Chabahar maritime university, Shahid Rigi Ave, Chabahar, Iran

² Department of Maritime Engineering, Amirkabir University of Technology, Hafez Ave, Tehran, Iran

10.22034/ijcoe.2026.585601.1243

Abstract

Due to the increased life of marine structures in the world, repair and maintenance of low cost and high reliability are of concern in this industry. In this paper, the corrosion-induced crack width of reinforced concrete (RC) structure in the marine environment is estimated according to the experimental data, laboratory results, and numerical formulas. Symptom-based Weibull function distribution and Bayesian theory have been used to predict the structural reliability in different modes (without repair and maintenance, with maintenance, and with repair and maintenance) and the probability of failure was assessed before and after maintenance to predict the appropriate time for its implementation using Bayesian theory. Bi-objective optimization was utilized to provide the client with optimal decisions regarding the probability of structural failure as well as the type of repair and maintenance strategies. The results showed the effectiveness of the proposed method in predicting performance, improving life service, and optimizing repair and maintenance costs of the marine structure.

Keywords

Corrosion

Crack width

symptom-based Reliability

Maintenance and repair

Cost Optimization

Subjects