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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...
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...
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...
Experimental evaluation of the out-of-plane behaviour of traditional stone maso...
Arêde, A.; Costa, A.; Costa, A. A.; Ferreira, T.; Gomes, A.; Varum, H.Recent earthquakes around the world, particularly those that have recently occurred in the southern regions of Europe, have provoked extensive damages in many traditional masonry structures calling into question the preservation and the safeguard of this heritage. This fact has driven the concern of the scientific community which has been undertaking several studies focused on the seismic vulnerability assessme...
Vulnerabilidade sísmica das construções: observações com base em sismos recente...
Rodrigues, H.; Varum, H.; Romão, X.; Arêde, A.; Guedes, J.; Costa, A. A.; Pauperio, E.; Costa, A. G.; 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...
Numerical model to evaluate the fire resistance in wooden slabs with cavities
Coelho, Diana; Fonseca, E.M.M.; Vila Real, P.; Faria, J. A.; Arede, A.The main objective of this paper is to develop a numerical model for thermal analysis of wooden slabs with cavities, when subjected to the fire action. The temperature profiles, the charring depth layer and the charring rate will be determined using the finite element method with ANSYS program. The numerical calculation of the temperature profiles will be obtained through a transient and a non-linear thermal an...
Energy dissipation and equivalent damping of RC columns subjected to biaxial be...
Rodrigues, H.; Arêde, A.; Varum, H.; Costa, A. G.The cyclic behaviour of reinforced concrete columns have been object of many experimental studies in the recent past years. However, the experimental studies on the biaxial response of RC columns are still limited. In this paper are presented the main results of an experimental study of 24 full-scale rectangular building columns tested for different loading paths under uniaxial and biaxial conditions. The exper...
Comparative analysis of RC irregular buildings designed according to different ...
Landingin, J.; Rodrigues, H.; Varum, H.; Arêde, A.; Costa, A.The present paper presents a comparison of the seismic provisions of the three seismic design codes, namely the Philippine code (National Structural Code of the Philippines or NSCP2010), the European code (Eurocode 8 or EC8), and American code (2009 International Building Code or 2009 IBC), to the most common ordinary residential building of standard occupancy. Two regular and irregular reinforced concrete (RC)...
Simplified model for the non-linear behaviour representation of reinforced conc...
Rodrigues, H.; Andrade-Campos, A.; Romão, X.; Arêde, A.; Varum, H.; Costa, A.In the present paper a simplified model is proposed for the force-deformation behaviour of reinforced concrete members under biaxial loading combined with axial force. The starting point for the model development was an existing fixed-length plastic hinge element model that accounts for the non-linear hysteretic behaviour at the element end-sections, characterized by trilinear moment-curvature laws. To take int...
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