Encontrados 36 documentos, a visualizar página 1 de 4
Seismic-V : vernacular seismic culture in Portugal
Correia, M.; Carlos, G.; Rocha, S.; Lourenço, Paulo B.; Vasconcelos, Graça; Varum, HumbertoFor a long time, reactive seismic retrofitting was focused on monumental heritage and very little on vernacular architecture. In the last years, there has been a growing interest on seismic resistant design and solutions and several research units emerged to produce important research in the scientific field. However, for some time, international focus to address earthquake-damaged buildings was on intrusive te...
Earthquake loss estimation for the Kathmandu Valley
Chaulagain, Hemchandra; Silva, Vitor; Rodrigues, Hugo; Spacone, Enrico; Varum, HumbertoThe capital city, Kathmandu, is the most developed and populated place in Nepal. The majority of the administrative offices, headquarters, numerous historical monuments, and eight World Heritages sites are in the Kathmandu Valley. However, this region is geologically located on lacustrine sediment basin, characterized by a long history of destructive earthquakes. The past events resulted in great damage of stru...
Seismic assessment of rc structures with infill masonry panels in Nepal: sensit...
Chaulagain, Hemchandra; Rodrigues, Hugo; Spacone, Enrico; Varum, HumbertoReinforced concrete (RC) buildings in Nepal are constructed as RC frames with masonry infill panels. These structures exhibit a highly non-linear inelastic behaviour resulting from the interaction between the masonry infill panels and the surrounding frames. In this context, the paper presents an extensive case study of existing RC-framed buildings in a high seismic risk area in Nepal. A sensitivity analysis of...
A contribution to the thermal insulation performance characterization of corn c...
Paiva, Anabela; Pereira, Sandra; Sá, Ana; Cruz, Daniel; Varum, Humberto; Pinto, JorgeAn alternative expedite experimental set-up is proposed to evaluate the thermal insulation performance of corn cob particleboards. Testing in situ thermal insulation performance under real thermal and hygrometric conditions, using more realistic sample dimensions, testing simultaneously several samples and monitoring continuously for several days the thermal behavior of a product are some advantages of this pro...
Evaluation of strengthening techniques of traditional masonry buildings: case s...
Vicente, Romeu; Rodrigues, Hugo; Varum, Humberto; Mendes da Silva, J. A. R.Increasing appraisal of the durability, conservation state, and changeable use and function of old buildings in urban centers relies a great deal on the structural safety evaluation of vertical load capacity and the ability to resist horizontal forces. The need to assess seismic vulnerability, particularly of traditional masonry buildings, is a key issue. Evaluation of the seismic vulnerability of old buildings...
Corn cob lightweight concrete for non-structural applications
Pinto, Jorge; Vieira, Barbosa; Pereira, Hélder; Jacinto, Carlos; Vilela, Paulo; Paiva, Anabela; Pereira, Sandra; Cunha, Vitor M. C. F.; Varum, HumbertoA lightweight concrete using granulated corn cob (without corn) as an aggregate is proposed in this research work. Taking into account that corn cob, after extracting the corn, is generally considered an agricultural waste, an interesting economic and sustainable benefit may result by using it as a building material. Therefore, it can be an alternative sustainable lightweight aggregate solution in comparison to...
Seismic strengthening of beam-column joints with multidirectional CFRP laminates
Coelho, Mário R. F.; Fernandes, Pedro Miguel Gomes; Melo, José; Sena-Cruz, José; Varum, Humberto; Barros, Joaquim A. O.; Costa, AníbalAn experimental program was carried out to analyse the potentialities of a technique based on the use of multidirectional CFRP laminates (MDL-CFRP) for the seismic repair and strengthening of reinforced concrete (RC) beam-column joints. This experimental program comprises cyclic tests on three full-scale RC joints, representative of interior beam-column connections in buildings. The joints were initially submit...
Seismic retrofit of RC beam-column joints using the MF-EBR strengthening technique
Coelho, Mário R. F.; Fernandes, Pedro Miguel Gomes; Melo, José; Sena-Cruz, José; Varum, Humberto; Barros, Joaquim A. O.; Costa, AníbalThe strengthening technique based on the use of multi-directional laminates of CFRP simultaneously glued and fixed with anchors (MF-EBR) has been recently purposed. An experimental program composed of pullout tests was carried out in order to study the bond behavior between concrete and MF-EBR system. The diameter and number of anchors, the pre-stress level applied to the anchors, and the strengthening procedur...
TV WPN : programa de cálculo automático para análise da vulnerabilidade de rede...
Varajão, João; Rodrigues, Tiago; Duarte, António A. L. Sampaio; Varum, Humberto; Pinto, Jorge; Bentes, IsabelA aplicação da teoria da vulnerabilidade a redes de abastecimento de água reais é um procedimento complexo e moroso, tornando imperativo o desenvolvimento de ferramentas informáticas que agilizem e automatizem esse processo. O programa de cálculo automático que está a ser desenvolvido, designado por TV WPN (Theory of Vulnerability of Water Pipe Networks), constitui um importante estímulo à inclusão do estudo da...
Camada de regularização com agregado de granulado de caroço da espiga de milho
Pinto, J.; Pereira, H.; Vilela, P.; Jacinto, C.; Vieira, J.; Paiva, A.; Pereira, S.; Ferreira, J.; Cunha, Vitor M. C. F.; Varum, HumbertoUm conjunto de construções antigas localizadas na região de Trás-os-Montes e Alto Douro, Portugal, apresentam caroços de espiga de milho incorporados na camada de enchimento de paredes exteriores de tabique. Esta descoberta tem vindo a estimular o estudo do potencial da aplicação na construção civil deste resíduo agrícola. Um trabalho de investigação preliminar permitiu concluir que este produto natural apresen...
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