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Advisor(s)
Abstract(s)
As pontes em arco de alvenaria de pedra representam um tipo de construção muito utilizado
no passado para complementar o traçado de vias de comunicação. Através das pontes a
passagem de peões e veículos de tração animal entre as margens de rios foi assim
possibilitada. Com a evolução do conhecimento e com a introdução de novos materiais como
o aço e o betão armado foi-se conseguindo vencer vãos cada vez maiores, com menos mãode-
obra e menos tempo para a sua execução.
Apesar de hoje em dia a construção de pontes em arco de alvenaria de pedra ter-se quase
extinguido, as existentes apresentam boa estabilidade permitindo assim ainda o seu uso. Desta
forma as gerações atuais e futuras têm a responsabilidade de garantir a sua manutenção e seu
bom funcionamento. Com o presente trabalho pretende-se realizar uma inspeção a uma ponte
em arco de alvenaria de pedra, nomeadamente, a Ponte Românica de Salzedas situada no
concelho de Tarouca em, Portugal, bem como avaliar a sua capacidade de carga. Para tal,
foram utilizadas fichas de inspeção da autoria de Morais (2012) e um programa
computacional baseado no método dos elementos discretos desenvolvido por Rouxinol (2007)
– o LFE-MEDM. Para visitar a ponte foi realizado um protocolo entre a Câmara Municipal de
tarouca e a Escola Superior de Tecnologia e Gestão de Viseu (ESTGV). Para a utilização do
método dos elementos discretos realizou-se um estudo de sensibilidade a certas formulações e
valores ou constantes que o programa incorpora, designadamente, tipo de formulação, valores
de incrementos de carga, valor da rigidez de contacto normal entre elementos discretos e tipo
de amortecimento. O estudo permitiu a determinação da combinação ou modelo que melhor
se adequa – execução em menos tempo possível e resultados viáveis.
ABSTRACT: The arched bridges of stone masonry construction represent a type widely used in the past to complement the layout of roads. Trough bridges the passage of pedestrians and horse-drawn vehicles between the riverbanks was thus secured. With the evolution of knowledge and the introduction of new materials such as steel and reinforced concrete was up getting beat spans, with less labor work and less time to implement. Although nowadays the construction of masonry arch bridges almost extinguished, the existing ones exhibit good stability thus allowing its further use. Thus the current and future generations have the responsibility to ensure its maintenance and proper functioning. With this work we intend to perform an inspection to an arched bridge of stone masonry, including the Romanesque Bridge Salzedas located in the municipality of Tarouca in Portugal, as well as accesses their capacity. LFE-MEDM - for such inspection sheets authored by Morais (2012) and a computer program based on the method of discrete elements developed by Nightingale (2007) were used. To visit the bridge, a protocol between the Municipality of Tarouca and the School of Technology and Management Viseu (ESTGV) was performed. For the use of the method of discrete elements carried out a study of sensitivity to certain values formulations or constants that incorporates, inter alia, type of formulation, the load increment, normal stiffness value between discrete contact elements and type damping. The study allowed the determination of the combination or model that best fits - running in less time possible and reliable results.
ABSTRACT: The arched bridges of stone masonry construction represent a type widely used in the past to complement the layout of roads. Trough bridges the passage of pedestrians and horse-drawn vehicles between the riverbanks was thus secured. With the evolution of knowledge and the introduction of new materials such as steel and reinforced concrete was up getting beat spans, with less labor work and less time to implement. Although nowadays the construction of masonry arch bridges almost extinguished, the existing ones exhibit good stability thus allowing its further use. Thus the current and future generations have the responsibility to ensure its maintenance and proper functioning. With this work we intend to perform an inspection to an arched bridge of stone masonry, including the Romanesque Bridge Salzedas located in the municipality of Tarouca in Portugal, as well as accesses their capacity. LFE-MEDM - for such inspection sheets authored by Morais (2012) and a computer program based on the method of discrete elements developed by Nightingale (2007) were used. To visit the bridge, a protocol between the Municipality of Tarouca and the School of Technology and Management Viseu (ESTGV) was performed. For the use of the method of discrete elements carried out a study of sensitivity to certain values formulations or constants that incorporates, inter alia, type of formulation, the load increment, normal stiffness value between discrete contact elements and type damping. The study allowed the determination of the combination or model that best fits - running in less time possible and reliable results.
Description
Keywords
Pontes em arco Elementos discretos Alvenaria de pedra Modelação numérica Carga de colapso