Project/scholarship details
- Project/scholarship ID
120118
- Reference
PTDC/ECM/120118/2010
- FundRef URI
- Funder
FCT - Fundação para a Ciência e a Tecnologia, I.P.
- Funder's country
Portugal
- Funding program
5876-PPCDTI
- Funding amount
157,188.00 €
- Start date
2012-03-01
- End date
2015-08-31
Documents
Risk assessment due to terrorist actions on public transportation networks : a ...
Pereira, João Miguel; Lourenço, Paulo B.The work presented in this paper was performed in collaboration with one of the largest Public Transportation Operator in Portugal and addresses the problem of risk assessment due to terrorist actions involving explosions at different levels. First, a region of the Operator is selected. The elements in the Operator's network with the highest associated risk are highlighted for each threat using the COUNTERACT g...
Implementation and validation of a strain rate dependent anisotropic continuum ...
Rafsanjani, Seyedebrahim Hashemi; Lourenço, Paulo B.; Peixinho, NunoA newly developed strain rate dependent anisotropic continuum model is proposed for impact and blast applications in masonry. The present model adopted the usual approach of considering different yield criteria in tension and compression. The analysis of unreinforced block work masonry walls subjected to impact is carried out to validate the capability of the model. Comparison of the numerical predictions and t...
Blast loading of masonry infills: testing and simulation
Pereira, João Miguel; Campos, José; Lourenço, Paulo B.This work intends to present a newly developed test setup for dynamic out-of-plane loading using underWater Blast Wave Generators (WBWG) as loading source. Underwater blasting operations have been, during the last decades, subject of research and development of maritime blasting operations (including torpedo studies), aquarium tests for the measurement of blasting energy of industrial explosives and confined un...
Masonry infill walls under blast loading using confined underwater blast wave g...
Pereira, João Miguel; Campos, José; Lourenço, Paulo B.The vulnerability of the masonry envelop under blast loading is considered critical due to the risk of loss of lives. The behaviour of masonry infill walls subjected to dynamic out-of-plane loading was experimentally investigated in this work. Using confined underwater blast wave generators (WBWG), applying the extremely high rate conversion of the explosive detonation energy into the kinetic energy of a thick ...
GFRP-brick strengthening systems under high strain rates
Pereira, João Miguel; Lourenço, Paulo B.Fibre Reinforced Polymers have become a popular material for strengthening of masonry structures. The performance of this technique is strongly dependent on the bond behaviour between the FRP and the substrate. Understanding the strain rate effect on the bond behaviour of this strengthening technique is important for proper design and proper modelling of these systems under impacts or blast loads. This work aim...
Experimental bond behaviour of GFRP and masonry bricks under impulsive loading
Pereira, João Miguel; Lourenço, Paulo B.Fibre Reinforced Polymers have become a popular material for strengthening of masonry structures. The performance of this technique is strongly dependent on the bond between the FRP and the substrate. Understanding the strain rate effect on these materials and strengthening techniques is important for proper design and proper modelling of these systems under impacts or blast loads. This work aims to study the b...
Risk assessment due to terrorist actions: A case study in Lisbon
Pereira, João Miguel; Lourenço, Paulo B.; Oliveira, Daniel V.The occurrence of unanticipated extreme events in modern societies typically induces significant damage and losses to the built heritage and people, but also concern and fear in the population. The capacity of structures to resist to extreme events has been deserving the attention of researchers during the last decades. The occurrence of explosion-based terrorist attacks in the last two decades has caused a gre...
Experimental characterization of masonry and masonry components at high strain ...
Pereira, João Miguel; Lourenço, Paulo B.The strain rate effect influences the mechanical properties on most construction materials and its investigation is critical for structural engineering. Current materials such as steel or concrete have been intensively investigated. However, similar studies on the dynamic properties of masonry or masonry components such as clay brick or mortar are scares. This work intends to study the behavior of masonry and i...
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