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Abstract(s)
A adoção de estruturas metálicas tem crescido consideravelmente nos últimos anos, principalmente na construção de edifícios industriais, comerciais e cobertura de grandes espaços.
Este tipo de estruturas aliam as boas características mecânicas do aço e o seu baixo peso específico à facilidade/rapidez do processo de fabrico, pelo que os elementos da estrutura são normalmente pré-fabricados em ambiente industrial e posteriormente montados em obra.
O principal objetivo desta dissertação é estudar a aplicação de soluções em treliça a coberturas de grandes vãos em unidades industriais, com especial enfase para a tipologia e tipo de secção a utilizar. Todas as treliças foram dimensionadas cumprindo os requisitos de segurança impostos pelo Eurocódigo 1 (EC1) e Eurocódigo 3 (EC3).
Concluiu-se que na execução de pavilhões metálicos a utilização de soluções de treliça de tipo Waren é mais vantajosa pois permite uma redução significativa do peso/custo. Foi ainda possível concluir que a utilização de perfis tubulares permite a obtenção de soluções globalmente mais económicas. Relativamente ao número de travamentos a utilizar, foi evidente que o aumento de peso/custo associado à diminuição do número de travamentos não é significativo quando comparado com o valor associado à execução e peso de um número elevado de elementos de travamento.
The adoption of metal structures has grown considerably in the last years, mainly in the construction of industrial, commercial buildings and coverage of large spaces. This type of structure combines the good mechanical characteristics of the steel and its low specific weight to the ease / speed of the manufacturing process, whereby the elements of the structure are usually prefabricated in an industrial environment and subsequently assembled on the construction. The main objective of this dissertation is to study the application of trusssolutions to coverings of large spans in industrial units, with special emphasis on the geometry of the trusses and type of section to be used. All trusses were designed according the safety requirements imposed by Eurocode 1 (EC1) and Eurocode 3 (EC3). It was concluded that in the building of truss solutions the use of Waren type lattice solutions is more advantageous for a significant reduction of weight / cost. It was also possible to conclude that the use of hollow sections allows obtaining globally more economical solutions. Regarding the number of lateral truss locks to be used, it was evident that the increase in weight/cost associated with a decrease in the number of lateral truss locks is not significant when compared to the value associated with the execution and weight of a high number of lateral truss locks.
The adoption of metal structures has grown considerably in the last years, mainly in the construction of industrial, commercial buildings and coverage of large spaces. This type of structure combines the good mechanical characteristics of the steel and its low specific weight to the ease / speed of the manufacturing process, whereby the elements of the structure are usually prefabricated in an industrial environment and subsequently assembled on the construction. The main objective of this dissertation is to study the application of trusssolutions to coverings of large spans in industrial units, with special emphasis on the geometry of the trusses and type of section to be used. All trusses were designed according the safety requirements imposed by Eurocode 1 (EC1) and Eurocode 3 (EC3). It was concluded that in the building of truss solutions the use of Waren type lattice solutions is more advantageous for a significant reduction of weight / cost. It was also possible to conclude that the use of hollow sections allows obtaining globally more economical solutions. Regarding the number of lateral truss locks to be used, it was evident that the increase in weight/cost associated with a decrease in the number of lateral truss locks is not significant when compared to the value associated with the execution and weight of a high number of lateral truss locks.
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Keywords
Eurocódigos Dimensionamento de estruturas metálicas Treliças Análise de custos Autodesk Robot Structural Analysis Professional Eurocodes Design of metal structures Trusses Cost analysis