Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A methodological framework for pavement damage estimation considering simulated axle load spectra
Tese de doutoramento em Engenharia Civil, na especialidade de Urbanismo, Ordenamento do Território e Transportes, apresentada ao Departamento de Engenharia Civil da Faculdade de Ciências e Tecnologia da Universidade de Coimbra ; Despite being crucial to the economic and social development of any country or region, road freight transport is one of the players responsible for environmental impact of transport increasing in the last decades. In order to minimise these impacts, heavy vehicles have been evolving. Consequently, road pavement design must keep up with it since a road pavement is designed for a foreseeable heavy traffic flow that will pass on the pavement during its considered life time. The current pavement design procedures convert the heavy traffic flow into a number of Equivalent Standard Axle Load (ESAL) applications. In particular, the Portuguese procedure uses Aggressiveness Factors (AFs) to make that conversion. However, the Portuguese AFs have remained unchanged since at least 1995 and subsequently they are not up-to-date with the evolutions in heavy vehicles. This thesis addresses the development of a methodological framework for AFs (and pavement damage) estimation. For that, axle load spectra are simulated by using a commercial software TruckSIM®. The methodological framework is applied to two case studies, a ‘baseline’ case study and an ‘empty running’ case study. For that, two pavement structures and two trucks are considered. The trucks carry different payload weights and run with different travel speeds over road profiles with different levels of roughness. In the third of a three level-hierarchical approach assumed, an application was created which allows the consideration of the degradation of the Asphalt Concrete (AC) modulus and the roughness growth along the pavement design period. It is used to quantify (a) the effect of the initial International Roughness Index (IRI) value of the road profile on the pavement damage, (b) the effect of the AC modulus degradation on the pavement ...
A methodological framework for pavement damage estimation considering simulated axle load spectra
Tese de doutoramento em Engenharia Civil, na especialidade de Urbanismo, Ordenamento do Território e Transportes, apresentada ao Departamento de Engenharia Civil da Faculdade de Ciências e Tecnologia da Universidade de Coimbra ; Despite being crucial to the economic and social development of any country or region, road freight transport is one of the players responsible for environmental impact of transport increasing in the last decades. In order to minimise these impacts, heavy vehicles have been evolving. Consequently, road pavement design must keep up with it since a road pavement is designed for a foreseeable heavy traffic flow that will pass on the pavement during its considered life time. The current pavement design procedures convert the heavy traffic flow into a number of Equivalent Standard Axle Load (ESAL) applications. In particular, the Portuguese procedure uses Aggressiveness Factors (AFs) to make that conversion. However, the Portuguese AFs have remained unchanged since at least 1995 and subsequently they are not up-to-date with the evolutions in heavy vehicles. This thesis addresses the development of a methodological framework for AFs (and pavement damage) estimation. For that, axle load spectra are simulated by using a commercial software TruckSIM®. The methodological framework is applied to two case studies, a ‘baseline’ case study and an ‘empty running’ case study. For that, two pavement structures and two trucks are considered. The trucks carry different payload weights and run with different travel speeds over road profiles with different levels of roughness. In the third of a three level-hierarchical approach assumed, an application was created which allows the consideration of the degradation of the Asphalt Concrete (AC) modulus and the roughness growth along the pavement design period. It is used to quantify (a) the effect of the initial International Roughness Index (IRI) value of the road profile on the pavement damage, (b) the effect of the AC modulus degradation on the pavement ...
A methodological framework for pavement damage estimation considering simulated axle load spectra
Almeida, Arminda Maria Marques (Autor:in) / Santos, Luís Picado
09.04.2015
101276869
Hochschulschrift
Elektronische Ressource
Englisch
Pavimentos rodoviários flexíveis , Dimensionamento de pavimentos , Simulação de veículos pesados , Espectros de carga por eixo , Irregularidade longitudinal , Fatores de agressividade , Dano em pavimentos , Flexible road pavement , Pavement design , Truck simulation , Axle load spectra , Road roughness , Pavement damage
DDC:
624
Closed-Form Solutions for Bimodal Axle Load Spectra and Relative Pavement Damage Estimation
| Online Contents | 2009
Optimum statistical characterization of axle load spectra based on load-associated pavement damage
| Online Contents | 2007
Methodological Framework for Truck-Factor Estimation Considering Vehicle–Pavement Interaction
| Online Contents | 2015
Methodological Framework for Truck-Factor Estimation Considering Vehicle-Pavement Interaction
| Online Contents | 2015