Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multilevel competing risks model for the performance assessment of highway pavement
Transportation and highway infrastructure maintenance practices, including the use of preservation models and optimal budgeting decisions are being implemented nationwide to ensure overall sustainability of roadway networks. This research employs the competing risk framework as a model to evaluate the extent and contribution of different modes of pavement failure to the overall deterioration of highway pavements. Stochastic models are formulated from legacy inspection data for pavements segments monitored for the past 35 years to evaluate the performance of highway pavements using the product limit survival estimates, cumulative incidence functions, and cause-specific hazards. With failure defined based on an established inspected condition threshold, the results showed that the three modes of failure (cracking, riding and rutting) are all significant to the failure of pavements. As the roadway pavement section ages the chance of failure is likely due to cracking than the other competing events. Based on the road functional classifications, the survival probabilities and the cumulative incidence estimates showed that the cracking defect was predominant on both interstate and non-interstate roadways. Also, urban and rural pavements deteriorated by the cracking and riding defects with the rutting failure mode being significant at the end of the service life of the pavement.
Multilevel competing risks model for the performance assessment of highway pavement
Transportation and highway infrastructure maintenance practices, including the use of preservation models and optimal budgeting decisions are being implemented nationwide to ensure overall sustainability of roadway networks. This research employs the competing risk framework as a model to evaluate the extent and contribution of different modes of pavement failure to the overall deterioration of highway pavements. Stochastic models are formulated from legacy inspection data for pavements segments monitored for the past 35 years to evaluate the performance of highway pavements using the product limit survival estimates, cumulative incidence functions, and cause-specific hazards. With failure defined based on an established inspected condition threshold, the results showed that the three modes of failure (cracking, riding and rutting) are all significant to the failure of pavements. As the roadway pavement section ages the chance of failure is likely due to cracking than the other competing events. Based on the road functional classifications, the survival probabilities and the cumulative incidence estimates showed that the cracking defect was predominant on both interstate and non-interstate roadways. Also, urban and rural pavements deteriorated by the cracking and riding defects with the rutting failure mode being significant at the end of the service life of the pavement.
Multilevel competing risks model for the performance assessment of highway pavement
Inkoom, Sylvester (Autor:in) / Sobanjo, John (Autor:in)
International Journal of Pavement Engineering ; 21 ; 1505-1515
14.10.2020
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Pavement , competing risk , failure modes , hazards , survival , defects
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