Investigation of the Benefit of Using Novel Corrosion-Resistant Steel in New and Existing Bridges in Pennsylvania

Details

• Creators:
  Frangopol, Dan M. ; Han, Xu
• Corporate Creators:
  Lehigh University. ATLSS Engineering Research Center ; Center for Integrated Asset Management for Multimodal Transportation Infrastructure Systems (CIAMTIS) (UTC)
• Corporate Contributors:
  United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; Pennsylvania State University. Thomas D. Larson Transportation Institute
• Subject/TRT Terms:
  Bridges Corrosion Corrosion Resistant Steel Optimization Risk
• Publication/ Report Number:
  CIAM-UTC-REG6
• Resource Type:
  Tech Report
• Geographical Coverage:
  Pennsylvania ; United States
• Edition:
  Final Report 02/10/2021 – 03/10/2022
• Corporate Publisher:
  Center for Integrated Asset Management for Multimodal Transportation Infrastructure Systems (CIAMTIS) (UTC)
• Abstract:
  For a steel bridge subjected to deterioration mechanisms like corrosion, different types of maintenance actions need to be considered to fully/partially restore the functionality of the bridge in an effective manner. In the decision-making process of risk based optimal life-cycle maintenance strategy, the optimal maintenance solutions are influenced by multiple factors, such as the type of maintenance actions applied and correlation among girder resistances. In addition, operational dependency is a factor that needs to be accounted for in the decision-making process of optimal maintenance strategies. Some maintenance actions are hard to implement in real engineering projects, and therefore should not be considered as feasible maintenance actions. Parametric analysis is worth carrying out to shed light on the influence of these parameters on optimal maintenance plans. For cases where girder replacement using corrosion-resistant steel is adopted as the maintenance action, the maintenance effect of optimal maintenance solutions can show the cost-effectiveness of corrosion-resistant steel. In the risk-based optimal decision-making process for multi-girder steel bridges subjected to corrosion, when and which part of the superstructure needs to be replaced during one maintenance action should be determined through optimization. The results of the optimization indicate that using A709-50CR can achieve economic benefits when operational dependency is considered. The cost-effectiveness of using corrosion-resistant steel such as A709-50CR to replace corroded carbon steel girders should not only be investigated at an individual bridge level, but also at a bridge network level. Investigations on the optimal maintenance strategy for infrastructure systems such as bridge networks have been gaining momentum as the importance of the concept of infrastructure systems gains recognition. Using an existing bridge network in Pennsylvania, it is shown that the economic benefit of risk-based life-cycle maintenance at a bridge network level may outweigh the sum of benefit of the maintenance actions applied on each individual bridge in the network.
• Format:
  PDF
• Funding:
  69A3551847103
• Collection(s):
  University Transportation Centers
• Main Document Checksum:
  urn:sha-512:1c52b0e8dc5f408a5129ab3152c7db418217ece5eec23742ab45d37ac600f5b50601bc1f6b085e243fdc9960ffb27f0aafbfb6562a27ed99766ab4e2d355f718
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/77768/dot_77768_DS1.pdf
• File Type:
  [PDF - 1.81 MB ]