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Behaviour of reinforced concrete column under biaxial cyclic loading: state of ...
Rodrigues, H.; Varum, H.; Arêde, A.; Costa, A.The cyclic behaviour of reinforced concrete columns has been object of many experimental studies in the last years, mostly focused on the unidirectional loading of columns under constant axial load conditions. In this research work, the existing test on reinforced concrete (RC) columns under biaxial load has been reviewed, underlying their main findings. In general, the experimental results show that the RC col...
Influencia de las paredes de mampostería de relleno en la respuesta sísmica de ...
Varum, H.; Rodrigues, H.Resumo não disponível.
Vulnerabilidade sísmica das construções: observações com base em sismos recente...
Rodrigues, H.; Varum, H.; Romão, X.; Arêde, A.; Guedes, J.; Costa, A. A.; Paupério, E.; Costa, A.; Vicente, R.; Tavares, A.Após os sismos recentes ocorridos no sul da europa nos últimos anos tem sido realizadas diversas visitas às zonas afetadas. Após cada visita foram analisados os dados recolhidos com o objetivo de interpretar os danos sofridos pelos diferentes tipos de construção, nomeadamente, as estruturas de alvenaria e de betão armado. Foram também observados os procedimentos de emergência desenvolvidos na gestão da catástro...
Seismic assessment and retrofitting of existing RC buildings in Kathmandu
Varum, H.; Chaulagain, H.; Rodrigues, H.; Spacone, E.The effectiveness of reinforced concrete (RC) column jacketing for improving the seismic performance of existing RC building structures were studied. Four three storey buildings with different structural configuration and detailing were selected for seismic assessment and retrofitting purpose. The response of structures (original and retrofitted) was evaluated in terms of capacity curve and inter-storey drift. The...
Análise de estratégias para implementação da reabilitação urbana e salvaguarda ...
Tavares, A.; Costa, A.; Varum, H.A reabilitação urbana apresenta-se de variadas formas no contexto nacional e internacional, regendo-se muitas vezes por princípios semelhantes que constam de documentos de instituições de referência, como a UNESCO e o ICOMOS. No entanto, os resultados da prática da intervenção de reabilitação com frequência demonstram que não ficaram garantidos os níveis adequados de salvaguarda da identidade do lugar que está ...
Biaxial seismic behaviour of reinforced concrete columns
Rodrigues, H.; Varum, H.; Arêde, A.The present work focuses on the assessment of the structural response of RC columns under bidirectional horizontal loads in three main streamlines. First, an experimental testing campaign was performed on rectangular columns, for different types of loading. Subsequently, the tested columns were simulated with different non-linear modelling strategies. Finally, a simplified hysteretic model is proposed for the r...
Evaluation of damage in reinforced concrete columns under biaxial loading
Rodrigues, H.; Arêde, A.; Varum, H.; Costa, A.The present study is focused on the analysis of damage evolution observed in an experimental campaign on 24 RC columns tested under uniaxial and biaxial loading. The observed damage evolution and damage states are compared for uniaxial and biaxial loading conditions. The test results show that for biaxial loading conditions each damage limit state occurs for lower drift demands when compared with the correspond...
Recycling of textile waste by reinforcing earthy render with micro-fiber
Pinto, J.; Cunha, V.; Vieira, B.; Caldeira, F.; Varum, H.Earth construction is worldwide spread. It is a valuable heritage to preserve because of its cultural and socio-economical relevance. Furthermore, earth construction, since it needs significantly less energy than modern construction techniques, and works with local materials, it contributes for thesustainable development. In Portugal, there is an impressive earth construction heritage that requires maintenance....
Adobe in Art-Nouveau constructions in Aveiro
Oliveira, C.; Varum, H.; Costa, A.Nowadays, Aveiro is one of the Portuguese cities where magnificent examples of Art Nouveau movement can be found. Due to construction techniques traditionally used in the area and time period in which the Art Nouveau emerged, most buildings of this style and region were built using adobe blocks, a singularity worldwide. This type of construction has many advantages but also requires particular care to be taken ...
Recycling of textile wastes in fibre-cement composites
Monteiro, H.; Caldeira, F.; Pinto, J.; Varum, H.Changing wastes into raw materials is one of the most favoured options for waste management, as it diverts wastes from landfill and saves resources. Fibres, either vegetable (cellulosic) or synthetic, may be added to cement pastes in order improve the properties of concrete or mortar by reinforcement. At the same time, if our source of fibres is wastes, then such processes make ways for recycling. In this work ...
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