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Authors
Abstract(s)
Ao longo da sua vida, os pavimentos rodoviários encontram-se sujeitos a ações que contribuem
para a redução da sua qualidade, traduzindo-se no aparecimento de degradações. A obtenção
de dados de localização e do grau de gravidade destas degradações permitem avaliar a
qualidade dos pavimentos que constituem uma determinada rede rodoviária, apoiando de forma
sustentada a gestão dos recursos financeiros alocados à conservação da mesma.
Tendo em vista essa gestão sustentada, o trabalho apresentado tem por objetivo completar o
sistema de auscultação de degradações em pavimentos rodoviários flexíveis com recurso a
recolha de dados de posicionamento e imagem vídeo desenvolvido numa dissertação anterior,
através da incorporação de um sistema de varrimento laser para a obtenção de dados para a
determinação da profundidade de cavados de rodeira.
A aplicação do sistema de medição de cavados de rodeira ao caso prático considerado no
desenvolvimento inicial da metodologia de auscultação das degradações permitiu corrigir
problemas de aplicação e funcionamento do equipamento, comparar os resultados obtidos com
os provenientes de uma inspeção visual realizada a pé, avaliar o grau de fiabilidade dos dados,
identificar as principais vantagens e desvantagens do método face aos existentes e completar
o estudo anterior.
O tratamento das imagens e dos dados obtidos com integração da informação num SIG permitiu
ainda concluir que a utilização do sistema desenvolvido pode ser aplicado em redes rodoviárias
urbanas e interurbanas, chegando a resultados mais fiáveis da profundidade do cavado de
rodeira em relação aos obtidos numa inspeção visual a pé.
A complementação do sistema de auscultação de pavimentos com os desenvolvimentos
propostos permitiu aumentar o grau de fiabilidade da avaliação da qualidade dos pavimentos e
a rapidez de observação das degradações, assim como diminuir o custo envolvido nas operações
de inspeção dos pavimentos.
Throughout their lifetime, road pavements are subjected to actions which contribute to a reduction of their quality, leading to the appearance of degradations. Obtaining data about the location and the degree of severity of this degradations allows for the evaluation of the quality of the road pavements which constitute a certain road network, supporting, in a sustainable way, the management of the financed resources allocated to its maintenance. In view of that sustainable management, the presented work intends to complete the system of monitoring deterioration in flexible road pavements by using a system, developed in a previous master’s thesis, which collects position data and video image through the incorporation of a laser scanning system in order to determine rut depth. The application of the rut depth measurement system to the practical case considered in the initial development of the methodology for monitoring degradation allowed to rectify problems related to the application and functioning of equipment, to compare the results to those obtained from a visual inspection on foot, to evaluate the level of reliability of the data, to identify the main advantages and disadvantages of the method in relation to the existing ones and to complete the previous study. The processing of the images and of the obtained data, with the integration of the information into a GIS (Geographical Information System), also allowed to conclude that the use of the developed system may be applied in urban and interurban road networks, reaching more reliable results about rut depth when compared to those obtained from a visual inspection done on foot. The complementation of the pavement monitoring system with the proposed developments allowed to increase the level of reliability of the quality of the evaluation of the pavements and the rate of the observation of the degradations, as well as to decrease the expenses involved in the pavement inspection operations.
Throughout their lifetime, road pavements are subjected to actions which contribute to a reduction of their quality, leading to the appearance of degradations. Obtaining data about the location and the degree of severity of this degradations allows for the evaluation of the quality of the road pavements which constitute a certain road network, supporting, in a sustainable way, the management of the financed resources allocated to its maintenance. In view of that sustainable management, the presented work intends to complete the system of monitoring deterioration in flexible road pavements by using a system, developed in a previous master’s thesis, which collects position data and video image through the incorporation of a laser scanning system in order to determine rut depth. The application of the rut depth measurement system to the practical case considered in the initial development of the methodology for monitoring degradation allowed to rectify problems related to the application and functioning of equipment, to compare the results to those obtained from a visual inspection on foot, to evaluate the level of reliability of the data, to identify the main advantages and disadvantages of the method in relation to the existing ones and to complete the previous study. The processing of the images and of the obtained data, with the integration of the information into a GIS (Geographical Information System), also allowed to conclude that the use of the developed system may be applied in urban and interurban road networks, reaching more reliable results about rut depth when compared to those obtained from a visual inspection done on foot. The complementation of the pavement monitoring system with the proposed developments allowed to increase the level of reliability of the quality of the evaluation of the pavements and the rate of the observation of the degradations, as well as to decrease the expenses involved in the pavement inspection operations.
Description
Keywords
Avaliação da Qualidade Captação de Imagem Cavado de Rodeira Pavimento Rodoviário Sig Varrimento Laser