Modeling the pothole generation process by composite statistical models for pavement management on expressway bridges

Y. Ninomiya, D. Mizutani, K. Kaito

研究成果: Conference contribution

抄録

It is empirically known that the generation frequency of potholes on bridge surface pavement is influenced by deterioration state of bridge decks. On the basis of this concept, in this study, data analysis methods to estimate the frequency of generating potholes is proposed. Specifically, the authors develop a statistical model of a composite process including the generation of potholes and the deterioration of decks. The process of generating potholes applies Poisson process while the process of deteriorating decks applies Markov process. Moreover, posterior distribution of the parameters of the complex models is estimated by using Bayesian methods and Markov chain Monte Carlo methods, incorporating the inspection data both on pavement and on decks into the model. On the other hand, these two kind of inspection data are not always acquired at the same time due to the nature of actual inspection works. Therefore, the model estimation methods as correcting such a systematic sampling bias are developed. Lastly, the effectiveness of the methodology proposed in this study is discussed for inspection data on existent expressway bridges. As a result, the generation rate of potholes is estimated by using the deterioration rate of decks while the deterioration rate of decks is estimated by using the generation rate of potholes. The result in this study contributes to reduce inspection frequency and costs rationally, leading to efficient pavement management.

本文言語English
ホスト出版物のタイトルPavement and Asset Management - Proceedings of the World Conference on Pavement and Asset Management, WCPAM 2017
編集者Maurizio Crispino
出版社CRC Press/Balkema
ページ251-260
ページ数10
ISBN(印刷版)9780367209896
出版ステータスPublished - 2019
外部発表はい
イベントWorld Conference on Pavement and Asset Management, WCPAM 2017 - Baveno, Italy
継続期間: 2017 6月 122017 6月 16

出版物シリーズ

名前Pavement and Asset Management - Proceedings of the World Conference on Pavement and Asset Management, WCPAM 2017

Conference

ConferenceWorld Conference on Pavement and Asset Management, WCPAM 2017
国/地域Italy
CityBaveno
Period17/6/1217/6/16

ASJC Scopus subject areas

  • 土木構造工学
  • 材料力学

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