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[57420] Artykuł: Analysis of defects with a proposal of the method of establishing structural failure probability categories for concrete sewersCzasopismo: Archives Of Civil And Mechanical Engineering Tom: 15, Zeszyt: 4, Strony: 1078-1084ISSN: 1644-9665 Wydawca: ELSEVIER URBAN & PARTNER SP. Z O O, UL KOSCIUSZKI 29, WROCLAW, 50-011, POLAND Opublikowano: Wrzesień 2015 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 30 Klasyfikacja Web of Science: Article DOI Web of Science Keywords: Concrete sewers  Defects  CCTV surveys  Probability  Failures  |
The objective of this study was to identify and classify the type, size and frequency of structural defects occurring in concrete storm water, sanitary and combined sewers that have been in service for a longtime. Another aim was to develop a method of classification of those sewers into five categories of failure probability. The paper presents results of non-destructive CCTV surveys of concrete sewers, which were conducted in different Polish cities. It also describes the causes of the defects that are related or unrelated to the type of flowing sewage. In the method proposed in the study, the matrix P-s was developed. Elements of this matrix were determined. They contain lower boundary values that define the size of the analyzed defects for five categories of sewer failure probability. The proposed method allows classifying every analyzed sewer into one of five categories of sewer failure probability. The method can be used as a tool in sewer rehabilitation planning. The key conclusions highlight the causes of sewer failures, the scale of hazards and the benefits resulting from the application of the proposed method to prioritize analyzed sewers into one of five categories of failure probability. (C) 2015 Politechnika Wroclawska. Published by Elsevier Sp. z o.o. All rights reserved.