Browsing by Author "Vasconcelos, G."
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- Seismic behavior of an old masonry building in Vila Real de Santo António, PortugalPublication . Ortega, J.; Vasconcelos, G.; Rodrigues, Hugo; Correia, M.Vila Real de Santo António is located in the Algarve region and was erected ex novo at the end of the 18th Century, after the 1755 Lisbon earthquake, following a Pombaline development that showed seismic concern at an urban and architectural level. However, most of the original constructions have been subjected to continuous alterations or even substituted for new ones. The first building built in the town was the Alfândega or Customs House and was selected as a case study because it still preserves most of its original characteristics. It was studied through historical survey, visual inspection and experimental in-situ characterization. As a result, a detailed finite element model was constructed and pushover analyses were carried out to assess its seismic vulnerability. The main goals of the paper are to understand the resisting mechanisms and seismic behavior of the building, as well as to evaluate the influence of structural alterations.
- Seismic Retrofitting: Learning from Vernacular ArchitecturePublication . Costa, A.; Varum, H.; Pinheiro Rodrigues, Hugo Filipe; Lourenço, P.B.; Vasconcelos, G.; Mariana R. Correia; Paulo B. Lourenço; Humberto VarumRammed earth is one of the oldest building materials in the world, and it is present in Portugal with a particular focus in the South of the country. The mechanical properties and the structural behaviour of rammed earth constructions have been the subject of study of many researchers in the recent years. This study is part of a broader research on vernacular seismic culture in Portugal. Numerical analyses were carried out to assess the influence of different retrofitting solutions in the behaviour and seismic performance of a rammed earth building, representative of the vernacular heritage of Alentejo region. Understating the structural fragilities of this type of constructions allowed determining the most appropriate retrofitting solutions.
- Seismic vulnerability of vernacular buildings in urban centres-the case of vila real de santo antónioPublication . Vasconcelos, G.; Lourenço, P.B.; Rodrigues, H.; Varum, H.Following detailed studies of Portuguese vernacular building typologies, this paper deals with buildings located in historical urban centres. An analysis of the history of the urban centre and, in particular, of some vernacular buildings is enhanced. Additionally, a discussion on the influence of changes of the geometry, and on added built volumes to original buildings in the seismic vulnerability of the buildings is also provided.
- Structural conservation and vernacular constructionPublication . Lourenço, P.B.; Varum, H.; Vasconcelos, G.; Rodrigues, H.Modern societies understand built cultural heritage, including vernacular construction, as a landmark of culture and diversity, which needs to be protected and brought to the next generations in suitable condition. Still, a large part of this heritage is affected by structural problems that menace the safety of buildings and people. In the case of vernacular construction, deterioration due to abandonment is often present, making the phenomena of urbanization one of the most important menaces to this built heritage. The developments in the areas of inspection, non-destructive testing, monitoring and structural analysis of historical constructions, together with recent guidelines for reuse and conservation, allow for safer, economical and adequate remedial measures, as discussed in this paper.