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Abstract(s)
O presente projeto tem como objetivo a conceção e o dimensionamento de duas pontes pedonais sobre o rio Neiva, a ponte do Açude e a ponte da Foz. Estas pontes permitirão a ligação entre as freguesias de São Paio de Antas e Castelo de Neiva através de dois pontos que se inserem num novo percurso pedonal, promovendo o melhoramento da zona ribeirinha das localidades abrangidas.
Os sistemas estruturais adotados são uma ponte em arco projetada em betão armado, a ponte do Açude, e uma ponte com uma solução mista, com um tabuleiro metálico, suspenso por cabos de aço, suspensos de um arco de betão armado, a ponte da Foz.
Primeiramente, são referidas e definidas todas as condicionantes dos locais, nomeadamente a topografia envolvente, as condições hidrológicas e geotécnicas e enquadramento ambiental e paisagístico.
Numa segunda fase, procede-se ao desenvolvimento da conceção das estruturas e à sua implantação considerando os aspetos geométricos que melhor se ajustam.
Os regulamentos europeus e nacionais serão utilizados como base de cálculo estrutural, particularmente os Eurocódigos 1 e 8, bem como uma abrangente bibliografia de boas práticas construtivas para pontes pedonais. As duas pontes serão modeladas num programa de elementos finitos, procedendo-se à respetiva análise estática e dinâmica.
Após análise dos esforços resultantes das combinações relativas aos vários estados limites, será feito o dimensionamento de todos os elementos estruturais. Serão seguidos os Eurocódigos 2 e 3, para dimensionamento dos elementos de betão e aço, respetivamente, garantindo que todos os aspetos de verificação da segurança serão devidamente cumpridos.
The present project has the objective of designing two pedestrian bridges over the river Neiva, the Açude bridge and the Foz bridge. These bridges will allow the connection between the margins of São Paio de Antas and Castelo de Neiva through through two points that are inserted in a new pedestrian path, promoting the improvement of the riverside area of the covered areas. The adopted structural systems are a reinforced concrete arch bridge, Açude bridge, and a bridge with a solution, with a steel deck, suspended by steel cables from an arch of reinforced concrete, the Foz bridge. Firstly, all site conditions are referred to and defined, namely the surrounding topography, hydrological and geotechnical conditions and environmental and landscape framework. In a second phase, the design of the structures and their implementation is developed considering the geometric aspects that best fit. The European and national codes will be used as a structural calculation basis, particularly Eurocodes 1 and 8, as well as a comprehensive bibliography of structural guides for pedestrian bridges. The two bridges will be modeled in a finite element program, with static and dynamic analysis. After analysis of the efforts resulting from the combinations of the various limit states, all structural elements will be dimensioned. Eurocodes 2 and 3 will be followed for designing concrete and steel elements, respectively, ensuring that all aspects of safety verification are duly complied with.
The present project has the objective of designing two pedestrian bridges over the river Neiva, the Açude bridge and the Foz bridge. These bridges will allow the connection between the margins of São Paio de Antas and Castelo de Neiva through through two points that are inserted in a new pedestrian path, promoting the improvement of the riverside area of the covered areas. The adopted structural systems are a reinforced concrete arch bridge, Açude bridge, and a bridge with a solution, with a steel deck, suspended by steel cables from an arch of reinforced concrete, the Foz bridge. Firstly, all site conditions are referred to and defined, namely the surrounding topography, hydrological and geotechnical conditions and environmental and landscape framework. In a second phase, the design of the structures and their implementation is developed considering the geometric aspects that best fit. The European and national codes will be used as a structural calculation basis, particularly Eurocodes 1 and 8, as well as a comprehensive bibliography of structural guides for pedestrian bridges. The two bridges will be modeled in a finite element program, with static and dynamic analysis. After analysis of the efforts resulting from the combinations of the various limit states, all structural elements will be dimensioned. Eurocodes 2 and 3 will be followed for designing concrete and steel elements, respectively, ensuring that all aspects of safety verification are duly complied with.
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Keywords
Pontes pedonais Ponte em arco Ponte mista Análise estática Análise dinâmica Pedestrian bridge Arch bridge Mixed bridge Static analysis Dynamic analysis