On the robustness to damage in the life-cyle assessment (LCA) of deteriorating bridges

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, the susceptibility of reinforced concrete structures to corrosion using a robustnessbased framework is presented. Robustness is regarded as a structural property related with the tolerance to damage and it is measured by the average performance considering all possible damage scenarios. In this case, structural performance is measured through the reliability index and damage is considered to result from reinforcement corrosion. The proposed methodology is oriented towards structural management and maintenance, as it can be used to classify structures regarding their susceptibility to the effects of corrosion, and help in prioritizing maintenance actions in a more consistent manner. The methodology described is applied to a reinforced concrete bridge demolished due to the concerning signs of advanced deterioration. The structure is analyzed using a non-linear finite element model, explicitly considering the reduction in cross area of reinforcement bars and the loss of bond between concrete and steel, as a result of corrosion. First Order Reliability Method (FORM) combined with the response surface method is used to assess the bridge deck reliability using a non-linear finite element model. Bridge robustness is then assessed using the proposed methodology. Finally, and based on the obtained results and on the visible signs of advanced deterioration, the bridge tolerance to corrosion and the effect of different effects of corrosion are discussed.

Original languageEnglish
Title of host publicationLife-Cycle of Structural Systems: Design, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014
PublisherCRC Press/Balkema
Pages589-597
Number of pages9
ISBN (Print)978-1-138-00120-6
Publication statusPublished - 2015
Event4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014 - Tokyo, Japan
Duration: 16 Nov 201419 Nov 2014

Conference

Conference4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014
CountryJapan
CityTokyo
Period16/11/1419/11/14

Keywords

  • REINFORCED-CONCRETE
  • CORROSION INFLUENCE
  • BOND STRENGTH
  • STEEL

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