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Permanent monitoring of Infante D. Henrique bridge based on FDD and SSI-COV met...

Implementation of an Active Mass Damper to Control Vibrations in a "Lively" Foo...

Estudos conformacionais de lactonas sesquiterpênicas e compostos relacionados

This work is aimed on the theoretical calculation of chemical shifts of sesquiterpene lactones, based on the conformational preferences of the compounds. This conformational study is set up in three stages. The first one is a conformational search using molecular mechanics, to assess the relevant conformations of the system under study. In the second stage, the conformations are optimized by quantum mechanics, ...

Experimental Modal Analysis of Civil Engineering Structures

Experimental and Numerical Assessment of the Dynamic Behaviour of a Stress-Ribb...

Dynamic Tests on a Large Cable-Stayed Bridge. An Efficient Approach

This paper describes the dynamic tests performed on a large cable-stayed bridge, Vasco da Gama Bridge, on the basis of a non-conventional testing system, comprehending several independent accelerographs conveniently synchronised by a laptop, as well as a laser interferometry system for non-contact dynamic measurements in stay cables. This system showed to be rather portable, efficient and accurate, leading to t...

Investigation of dynamic cable-deck interaction in a physical model of a cable-...

The present paper describes an investigation of the effect of dynamic cable interaction with the deck and towers in the seismic response of a cable-stayed bridge. This study involved shaking table tests performed on a physical model of Jindo bridge, in order to validate two alternative numerical models, which differ in terms of consideration of coupled cable/deck and towers modes. The response to artificial acc...

Investigation of dynamic cable-deck interaction in a physical model of a cable-...

A description of an experimental investigation involving the study of the dynamic interaction between the cables and the deck/towers system in cable-stayed bridges is presented. The work was carried out on a physical model of a cable-stayed bridge (the Jindo Bridge, in South Korea), whose characteristics of stiffness and mass have been conveniently scaled. Standard modal analysis tests were performed using both...

Active control of vibrations in pedestrian bridges

This paper, apart from making a brief general reference to vibration problems in pedestrian bridges, as well as to the form of modelling of dynamic pedestrian loads, presents the use of a predictive control strategy for the numerical simulation of the dynamic response of actively controlled structures of this type. The consideration of this control strategy permitted the development of a computational model, wh...