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Advisor(s)
Abstract(s)
A constante necessidade de promover uma melhoria da qualidade das rodovias e uma consequente ampliação do conjunto de infraestrutura de transportes está diretamente ligada às necessidades dos utilizadores, os quais almejam conforto, economia e segurança. A este fato, alia-se o objetivo de promover um incremento no desenvolvimento e na atividade econômica das nações. Diante do expressivo grau de importância das rodovias, torna-se necessária a realização de um aprimoramento e refinamento dos métodos de dimensionamentos já existentes, com a finalidade de se obter resultados mais satisfatórios do ponto de vista econômico e também do âmbito estrutural, atuando de forma preventiva diante da ruína prematura das camadas. No presente trabalho, foi realizada uma análise do método expedito de dimensionamento de pavimentos rodoviários, proposto pelas Infraestruturas de Portugal (ex-JAE) (1995), denominado por MACOPAV (Manual de Concepção de Pavimentos), no sentido de contribuir para um refinamento das soluções propostas pelo mesmo. Nesta análise, e com este objetivo, foram realizadas diversas abordagens e estudos detalhados na perspectiva de dimensionamento, baseados no método empírico-mecanicista proposto pela SHELL (1978). Com base neste método, largamente usado e comprovado, realizou-se um estudo com a finalidade de estabelecer uma melhor relação entre as variáveis usadas no MACOPAV no dimensionamento expedito, e as suas soluções de dimensionamento, no sentido de fornecer estruturas finais otimizadas e bem caracterizadas quanto a espessuras finais das camadas betuminosas. Neste contexto, foram realizadas análises de caráter estrutural e econômico, além da obtenção de relações que expressam o custo-benefício por meio de uma relação entre o preço do metro quadrado do pavimento e o seu respectivo valor de eixos-padrão resistente. Deste modo, almeja-se com este trabalho, contribuir para um melhor entendimento do comportamento das estruturas de pavimentos flexíveis dimensionadas a partir do método expedito MACOPAV, além de contribuir com o fornecimento de informações mais detalhadas, de forma a melhorar a interpretação e tomada de decisão em situações práticas da utilização do manual em questão.
Palavras-chave:
The constant need to promote an improvement in the quality of highways and a consequent expansion of the transport infrastructure is directly connected to the needs of users, who seek for comfort, economy and security. To this fact, the objective is to promote an increase in the development and economic activity of nations. Given the expressive importance of highways, it is necessary to carry out an improvement and refinement of already existing design methods, in order to obtain more satisfactory results from the economic point of view and also from the structural scope, acting in a prevention of premature cracking of the layers. In the present work, an analysis of the expedited road pavement design method, proposed by the Infraestruturas de Portugal (ex-JAE) (1995), named MACOPAV (Pavement Design Manual) was carried out, in order to contribute to a refinement of the solutions proposed by it. In this analysis, and with this objective, several approaches and detailed researchs were carried out in the dimensioning perspective, based on the empirical-mechanistic method proposed by SHELL (1978). Based on this widely used and proven method, a study was carried out with the purpose of establishing a better relationship between variables used in MACOPAV in the expedient design and its solutions, in order to provide optimized final structures and well characterized as the final thicknesses of the bituminous layers. In this context, structural and economic analyzes were carried out, as well as obtaining relations that express cost-benefit by means of a relation between the price of the square meter of the floor and its respective value of resistant standard axes. In this way, the objective of this work is to contribute to a better understanding of the behavior of the flexible pavement structures dimensioned using the expedited method MACOPAV, besides contributing with the provision of more detailed information, in order to improve the interpretation and decision in practical situations of using the manual in question.
The constant need to promote an improvement in the quality of highways and a consequent expansion of the transport infrastructure is directly connected to the needs of users, who seek for comfort, economy and security. To this fact, the objective is to promote an increase in the development and economic activity of nations. Given the expressive importance of highways, it is necessary to carry out an improvement and refinement of already existing design methods, in order to obtain more satisfactory results from the economic point of view and also from the structural scope, acting in a prevention of premature cracking of the layers. In the present work, an analysis of the expedited road pavement design method, proposed by the Infraestruturas de Portugal (ex-JAE) (1995), named MACOPAV (Pavement Design Manual) was carried out, in order to contribute to a refinement of the solutions proposed by it. In this analysis, and with this objective, several approaches and detailed researchs were carried out in the dimensioning perspective, based on the empirical-mechanistic method proposed by SHELL (1978). Based on this widely used and proven method, a study was carried out with the purpose of establishing a better relationship between variables used in MACOPAV in the expedient design and its solutions, in order to provide optimized final structures and well characterized as the final thicknesses of the bituminous layers. In this context, structural and economic analyzes were carried out, as well as obtaining relations that express cost-benefit by means of a relation between the price of the square meter of the floor and its respective value of resistant standard axes. In this way, the objective of this work is to contribute to a better understanding of the behavior of the flexible pavement structures dimensioned using the expedited method MACOPAV, besides contributing with the provision of more detailed information, in order to improve the interpretation and decision in practical situations of using the manual in question.
Description
Keywords
Dimensionamento MACOPAV Métodos expeditos