Pavement Service Life Estimation and Condition Prediction: Cox Proportional Hazard Model and Linear Mixed Effects Model - Jianxiong Yu - Livros - VDM Verlag Dr. Müller - 9783639258974 - 18 de agosto de 2010
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Pavement Service Life Estimation and Condition Prediction: Cox Proportional Hazard Model and Linear Mixed Effects Model

Jianxiong Yu

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Pavement Service Life Estimation and Condition Prediction: Cox Proportional Hazard Model and Linear Mixed Effects Model

Remaining service life estimation and pavement condition prediction are two essential functions of Pavement Management Systems. This book first introduces the development of the Cox Proportional Hazards model for analysis on pavement remaining severice life. By specifying pavement condition rating (PCR) of 70 as the terminal pavement status, survival curves were developed based on historical PCR data using Cox Proportional Hazards method. Further, the estimated service lives of pavements were obtained from these survival curves. Results indicate the survival curve derived from the Cox model can be used to assist in pavement rehabilitation decision-making, overlay design, and budget allocation. Secondly, a linear mixed effects model (LMEM) is developed to predict the pavement condition for individual pavements. an example is given. Since LMEM uses a weighted combination of the deterioration trends of the family average and that of the specific pavement, it can significantly improve the prediction accuracy and can be used for project level pavement condition prediction.

Mídia Livros     Paperback Book   (Livro de capa flexível e brochura)
Lançado 18 de agosto de 2010
ISBN13 9783639258974
Editoras VDM Verlag Dr. Müller
Páginas 100
Dimensões 225 × 6 × 150 mm   ·   158 g
Idioma English  

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