Sensitivity analysis and correlation between rutting and deflection in flexible pavement structures

Análisis de sensibilidad y correlación entre el ahuellamiento y la deflexión en estructuras de pavimento flexible

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Carlos Hernando Higuera - Sandoval
Abstract

The present investigation shows the sensitivity analysis and the correlation between the rutting or deformation and the deflection in a flexible pavement structure to verify the design criteria of deformation or rutting and deflection of the structural model. The methodology applied for rutting analysis was established in the guide for the mechanical-empirical design of flexible pavements "Mechanistic-Empirical Pavement Design Guide - MEPDG" developed by the AASHTO (American Association of State Highway and Transportation Officials) and the theory elastic for deflection calculation. The variables analyzed were contact pressure, load per tire, modulus of elasticity, and thickness of the different layers of the flexible pavement structural model. As a conclusion of the investigation carried out, the variables most sensitive to rutting of flexible pavement structures are obtained: the dynamic modulus of the asphalt mix, the load per tire, the thickness of the asphalt layer, the contact pressure, and the most sensitive variables. to deflection are the load per tire, the resilient modulus of the subgrade, the thickness of the asphalt layer and the dynamic modulus of the asphalt layer; Also, the correlations between the deflection, the design variables and the rutting of flexible pavement structures are presented, this information is very useful for designer engineers of pavement structures.

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Author Biography (SEE)

Carlos Hernando Higuera - Sandoval, • Full professor of Transport and Roads Department of Faculty of Engineering of Pedagogical and Technological University of Colombia.

  1. 1.     ACADEMIC FORMATION
  • Transport and Roads Engineer graduate from Pedagogical and Technological University of Colombia.
  • Specialist in Terrestrial routes from The University of Cauca.
  • Specialist in Roads from the Technical University of Madrid – Spain.
  • Specialist in Land Transportation from the Technical University of Madrid – Spain.
  • Master in Terrestrial Routes from the University of Cauca.
  • Complementary studies of roads in Rosario National University – Argentina.

 

  1. 2.     TEACHING
  • Full professor of Transport and Roads Department of Faculty of Engineering of Pedagogical and Technological University of Colombia.
  • Member of the Group of Research and Development in Road Infraestructure  – GRINFRAVIAL– Category C.
  • Professor at academic programs of Specialization and Master in Road Infrastructure of  UPTC – Tunja.

 

  1. 3.     Author of several books on pavement structures, highlighting:

 

  • MECANICA DE PAVIMENTOS – PRINCIPIOS BASICOS. ISBN 978-958-660-122-1
  • NOCIONES SOBRE METODOS DE DISEÑOS DE ESTRUCTURAS DE PAVIMENTOS PARA CARRETERAS – VOLUMEN I Y II. ISBN 978-958-660-149-8 y ISBN 978-958-660-152-8.
  • NOCIONES SOBRE EVALUACION Y REHABILITACION DE ESTRUCTURAS DE PAVIMENTOS. ISBN: 978-958-660-187-0.

 

  1. 4.     Author of more than twenty six articles about pavement structures.

 

  1. 5.     Visiting Professor at postgraduate courses in road infrastructure, road geotechnics and pavements, roads and transport, geometric design and pavement engineering and land routes of the following universities:

 

  • SANTO TOMAS UNIVERSITY IN TUNJA
  • UNIVERSIDAD DEL NORTE IN BARRANQUILLA
  • THE UNIVERSITY OF CAUCA IN POPAYAN
  • THE UNIVERSITY OF NARIÑO

 

  1. 6.     DIÓDORO SÁNCHEZ Award- 2011, given by the Colombian Society of Engineers for the best engineering book published in 2010.

 

  1. 7.     Professional experience in the private, public and educational sector over 28 years.

 

  1. 8.     Coordinator of the Road Infrastructure Specialization program of Faculty of Engineering of Pedagogical and Technological University of Colombia.
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