Instandsetzung von Tiefgaragen – Wann und warum?

Juan Mauricio Lozano Valcarcel, Christoph Gehlen, Thomas Kränkel, Angelika Schießl-Pecka

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Rehabilitation of parking garages – when and why?. Existing models for the evaluation of the durability of reinforced concrete structures allow to prognose the limit state condition of the structure during its service life by means of the reliability index. Furthermore, in the decision-making process, a fixed (limit) value for the reliability can be defined, which refers to a maximum acceptable probability of occurrence of a selected (undesirable) event (limit state). The worse the condition, the higher the expected rehabilitation costs. If it is possible to describe the expected rehabilitation costs as a function of the reliability index, the repair times can be determined in a cost-optimal way. Therefore, expert reports with extensively documented inspection results and associated costs of underground parking garage repairs were analyzed. The main cause of the repairs was in all cases chloride-induced reinforcement corrosion. Three approximation methods were used to estimate the reliability of column and wall bases and compared with each other. At the structure, i.e. object level, it was not possible to establish a clear relationship between reliability and repair costs. However, at the structural component level, this was achieved for a single project. This provides a starting point for cost-optimized determination of repair times.

Original languageGerman
Pages (from-to)946-955
Number of pages10
JournalBeton- und Stahlbetonbau
Issue number12
StatePublished - Dec 2022

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