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Advisor(s)
Abstract(s)
Para a construção de uma estrutura há diversos factores que influenciam a sua concepção,
tais como o vão, a topografia do local, acessibilidades, os possíveis acidentes do terreno,
como cursos de água ou a sua função. É de ressalvar ainda que o enquadramento
paisagístico cada vez mais é tido em conta, embora não seja determinante para a sua
função ou dimensionamento.
Na construção de pontes existe uma grande variedade de métodos construtivos a usar
variando estes com a dimensão da obra ou com a disponibilidade de equipamento por
parte do empreiteiro. Cada vez mais deverá ser bem analisado o sistema a usar, uma vez
que o custo do processo construtivo constitui uma percentagem elevada do valor final da
obra, podendo ser reduzidos os custos pela escolha acertada do método.
Com a presente dissertação pretende-se analisar os diferentes métodos construtivos
existentes no mercado, sendo estes distinguidos entre sistemas com aplicação de préfabricação
ou com betonagem in-situ, e ainda o processo a usar em função do vão a
vencer.
To build a bridge there are several factors influencing the design, such as the total length, the local topography, accessibility, possible terrain features such as water courses or its function. It must be pointed out that even the landscaping is increasingly being taken into account, although it is not critical for its function or design. In bridge construction, a wide variety of construction methods can be used, depending its choice on the dimension of the work or on the contractor’s equipment availability. More and more, the system to be used must be analysed, once that this project stage constitutes a high percentage of the final project cost, which can be reduced by choosing the right method. It is the aim of this dissertation to analyse the different construction methods available in the market, these being distinguished between prefabricated systems and in situ concreting, and also the process to use according to the span.
To build a bridge there are several factors influencing the design, such as the total length, the local topography, accessibility, possible terrain features such as water courses or its function. It must be pointed out that even the landscaping is increasingly being taken into account, although it is not critical for its function or design. In bridge construction, a wide variety of construction methods can be used, depending its choice on the dimension of the work or on the contractor’s equipment availability. More and more, the system to be used must be analysed, once that this project stage constitutes a high percentage of the final project cost, which can be reduced by choosing the right method. It is the aim of this dissertation to analyse the different construction methods available in the market, these being distinguished between prefabricated systems and in situ concreting, and also the process to use according to the span.
Description
Keywords
Métodos construtivos Pontes Pré-fabricação Betonagem in-situ Constructive methods Bridges Prefabrication In situ concreting
Citation
Publisher
Instituto Politécnico do Porto. Instituto Superior de Engenharia do Porto