Rehabilitation of underground garages – defining a cost function for use in the decision-making process

J. M.Lozano Valcarcel, C. Gehlen, T. Kränkel, A. Schiessl-Pecka, J. D. Cassiani, S. Kessler

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Performance-based design concepts are a key tool to ensure the durability of reinforced concrete structures. Their application relies on the definition of limit states, for which defined limit state functions represent the probability of exceeding a particular condition. Such limit state functions are available for depassivation (initiation of reinforcement corrosion) in case of concrete carbonation and/or chloride-induced corrosion. Moreover, not only the knowledge about the exceedance of a certain limit state is of interest, but also the related consequences such as the costs for the subsequent repairs. This contribution analyses the inspection reports and the tendering documents of well-documented rehabilitations of parking garages. The focus was set on chloride-induced corrosion since it is the main cause of the rehabilitations. The analysis focused on the following aspects: the estimation of the reliability index value that led to the rehabilitation, the rehabilitation method used, and finally an indicative estimation of the incurred costs. The results unveil that for both conventional and cathodic protection rehabilitations, the reliability index had similar ranges for columns. Furthermore, in one meticulous project, a clear relationship between the estimated reliability index and the incurred costs was observed. However, this finding was less evident in other projects, for which a step cost function was more suitable.

Original languageEnglish
Title of host publicationLife-Cycle of Structures and Infrastructure Systems - Proceedings of the 8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023
EditorsFabio Biondini, Dan M. Frangopol
PublisherCRC Press/Balkema
Pages3150-3157
Number of pages8
ISBN (Print)9781003323020
DOIs
StatePublished - 2023
Event8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023 - Milan, Italy
Duration: 2 Jul 20236 Jul 2023

Publication series

NameLife-Cycle of Structures and Infrastructure Systems - Proceedings of the 8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023

Conference

Conference8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023
Country/TerritoryItaly
CityMilan
Period2/07/236/07/23

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