Structure and Infrastructure Engineering
L5. Evaluación socioeconómica para la mitigación del riesgo de infraestructura crítica
Pontificia Universidad Católica de Chile
Markov chains; urban pavements; performance models; network level analysis; pavement management; probabilistic models; transportation engineering
Existing performance models developed for interurban pavements are not applicable to urban pavements due to differences in traffic demands and deterioration trends. The objective of the study was to develop performance models for the management of urban pavement networks. Markov chains and Monte Carlo simulation were applied to account for the probabilistic nature of pavements deterioration over time, using data collected in the field. One of the advantages of this methodology is that it can be used by local agencies with scarce technical resources and historical data. Eight performance models were developed and successfully validated for asphalt and concrete pavements in humid, dry and Mediterranean climates with different functional hierarchies. The resulting models evidence the impact of design, traffic demand, climate and construction standards on urban pavements performance. Predicted service life of asphalt and concrete pavements in primary networks are consistent with design standards. However, pavements in secondary and local networks present shorter and longer service life compared to design life, respectively.
Climate is a relevant factor for asphalt pavements, where higher deterioration was observed compared to that expected. Opposite to this, no relevant differences between design and performance can be attributed to climate in concrete pavements.
Aleli Osorio-Lird, a,b,c; Alondra Chamorro, a,b; Carlos Videla, a; Susan Tighe, d; and Cristina Torres-Machi, e
a Escuela de Ingeniería, Departamento de Ingeniería y Gestión de la Construcción, Pontificia Universidad Católica de Chile, Santiago, Chile
b National Research Center for Integrated Natural Disaster Management, Santiago, Chile
c Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, Canada
d Norman W. McLeod Professor of Sustainable Pavement Engineering, Centre for Pavement and Transportation Technology, Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, Canada
e Department of Civil, Environmental and Architectural Engineering, University of Colorado Boulder, Boulder, CO, USA