Os modelos de partículas, ao terem em conta a estrutura granular da rocha, consideram de forma explícita a variabilidade associada ao material, razão pela qual têm sido aplicados com sucesso no estudo da fratura em rocha. ...

Neste relatório apresenta-se de forma sucinta a descrição da atividade de investigação realizada no âmbito do projeto DEMRock6m no período 2016-2017. Os resultados da atividade são analisados e avaliados em face dos objetivos ...

Release of the in situ state of stress is often the most relevant action during the excavation of underground structures in rock masses, such as powerhouse caverns for hydroelectric schemes, which are often excavated at ...

Minarets are important elements of mosques. These slender structures have suffered notable damage as a result of past earthquakes. In this paper three historical masonry minarets located in Istanbul, Turkey are studied in ...

Earthquakes cause severe damage to masonry structures due to inertial forces acting in the normal direction to the plane of the walls. The out-of-plane behavior of masonry walls is complex and depends on several parameters, ...

Detailed particle models by taking into account the material grain structure explicitly consider the material randomness, including a size limiter for damage localization. A VGMC3D contact model is presented that considers ...

Na presente comunicação é apresentado o estudo de caracterização dinâmica da barragem do Alto Ceira II recorrendo a métodos experimentais e numéricos. Foi efetuada a caraterização deste comportamento para as situações de ...

This document presents the research plan for the doctoral thesis of LNEC's Junior Research Fellow Margarida Espada. This work, to be submitted to the Faculty of Engineering of the University of Porto (FEUP), will be developed ...

The most relevant action in the design of underground projects is often the release of the in situ stresses that occurs during the construction stage. Several different field methods are available to measure the in situ ...

Given the results of triaxial tests, regressions are commonly used to evaluate the parameters of failure criteria that model intact rock strength, and to perform statistical inferences used to evaluate characteristic values ...