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Bridge deterioration models for different superstructure types using Markov chains and two-step cluster analysis

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Resumo:Bridges deteriorate due to different causes such as ageing and climatic conditions. As a consequence, repair actions are considered more expensive than maintenance. Therefore, the prediction of maintenance at the bridge network level is particularly complex due to the considerable level of heterogeneity spanning various bridge types and functions. Consequently, in this article an analytical deterioration model called ‘two-step cluster analysis’ is presented and applied to predict the results of a homogeneous data set. This model had been used in different fields including civil engineering but not for superstructure deterioration forecasting. Variables that interfere with the performance of the structure were considered, such as geometry, volume of traffic, among others. The results show that deterioration drop rapidly if repair treatments were not performed. Variations of up to 20.9% at 50 years between the degradation of the database and the analysis of groups, demonstrates the importance of grouping within the analysis of the database, since the late maintenance can affect the life of the bridge. Preventive actions could significantly mitigate the deterioration process. The applied methodology benefits from current bridge inspection practice and produces a probabilistic rating that is consistent with the Markov approach for model deterioration and grouping variables.
Autores principais:Moscoso, Yina Fernanda Muñoz
Outros Autores:Prada, Luís Francisco Rincon; Leiva-Maldonado, Stefan L.; Matos, José C.
Assunto:Bridge management systems Degradation models Probabilistic rating Markov chains models Visual inspection Cluster analysis Clustering variables Engenharia e Tecnologia::Engenharia Civil Indústria, inovação e infraestruturas
Ano:2022
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso restrito
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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