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Advisor(s)
Abstract(s)
Esta dissertação insere-se no estudo de um edifício antigo. Resultou de um projeto de 1912 de alteração e ampliação de umas “casas” anexas a um Palacete do séc. XIX, com adoção de materiais inovadores à época, nomeadamente o betão armado, tornando-se um caso pioneiro.
A utilização de uma solução mista, cobertura de laje vigada em betão armado, assente em paredes portantes de alvenaria de pedra retrata uma inovação dos finais do século XIX, a utilização de betão armado como elemento estrutural. A combinação da solução típica de elementos de alvenaria nas paredes com a introdução de uma cobertura em betão armado é o início da mudança do método construtivo e constitui uma nova fase na construção em Portugal.
É analisada a sua localização, que embora privilegiada, no centro de Lisboa, levanta problemas devido à topografia do terreno, ao risco a eventos sísmicos e ao deslizamento de massa de vertente.
O estudo deste caso pretende contribuir para a compreensão dos problemas estruturais que edifícios antigos, anteriores a regulamentos antissísmicos, podem apresentar através da análise do betão armado como elemento estrutural na sua fase pioneira. São apontadas considerações sobre os novos Eurocódigos.
Finalmente é abordada a fase de intervenção após a análise da estrutura. São alencadas as exigências no reforço, recuperação e reabilitação da estrutura do edifício, tendo em conta os resultados obtidos na análise estrutural, focando-se a análise gravítica, análise das fundações e a análise sísmica.
This dissertation is the study of a very old building. It is the result of an alteration and extension project on some "houses", known as Stables of Chateau Ribeiro da Cunha, with the adoption of innovative materials, reinforced concrete, becoming a pioneer case of that time. The use of a mixed solution, reinforced concrete on the slabs and beans, and masonry stone on supporting walls portrays an innovation of the late nineteenth century, the use of reinforced concrete as a structural element. A typical combination of solution on the walls masonry units with the introduction of a reinforced concrete cover is the beginning of the change of the constructive method and a new type of construction phase in Portugal. It is analyzed the location, that although privileged, in the center of Lisbon, poses problems due to the topography of the land, the risk due to seismic events and the sliding mass strand. The study of this case is intended to contribute to the understanding of the structural problems that earlier buildings, before anti seismic regulations and without detailing can provide. It is made a structural analysis of reinforced concrete as a structural element in its early stage. Considerations about the new Eurocodes are pointed. Finally after the structure analysis the intervention phase. The demands on strengthening, recovery and rehabilitation of the building structure, taking into account the results obtained in structural analysis, focusing on the gravitational analysis, analysis of foundations and seismic analysis.
This dissertation is the study of a very old building. It is the result of an alteration and extension project on some "houses", known as Stables of Chateau Ribeiro da Cunha, with the adoption of innovative materials, reinforced concrete, becoming a pioneer case of that time. The use of a mixed solution, reinforced concrete on the slabs and beans, and masonry stone on supporting walls portrays an innovation of the late nineteenth century, the use of reinforced concrete as a structural element. A typical combination of solution on the walls masonry units with the introduction of a reinforced concrete cover is the beginning of the change of the constructive method and a new type of construction phase in Portugal. It is analyzed the location, that although privileged, in the center of Lisbon, poses problems due to the topography of the land, the risk due to seismic events and the sliding mass strand. The study of this case is intended to contribute to the understanding of the structural problems that earlier buildings, before anti seismic regulations and without detailing can provide. It is made a structural analysis of reinforced concrete as a structural element in its early stage. Considerations about the new Eurocodes are pointed. Finally after the structure analysis the intervention phase. The demands on strengthening, recovery and rehabilitation of the building structure, taking into account the results obtained in structural analysis, focusing on the gravitational analysis, analysis of foundations and seismic analysis.
Description
Keywords
Betão armado Modelação estrutural Análise estrutural Análise sísmica Reinforced concrete Structural modeling Structural analysis Seismic analysis