GALVÍN , Pedro

En la presente tesis se presenta un modelo numérico para la predicción de las vibraciones inducidas en el suelo y en estructuras cercanas a la vía por el paso de trenes de alta velocidad. Los problemas de interacción dinámica vehículo-vía y vía-suelo-estructura han sido desacoplados. Primero, se ha resuelto la ecuación de movimiento que permite...

A theoretical and experimental research work in relation to Barqueta cable-stayed bridge is described in this paper. Barqueta Bridge, across Guadalquivir river, links the city of Seville with the Scientific Park Cartuja 93. At jam hours cars may cover one half of the bridge lanes for more than one hour. Full-scale tests were carried out to...

A theoretical and experimental research work of the Barqueta cable-stayed bridge is described in this paper. The Barqueta Bridge, across Guadalquivir river, links the city of Seville with the Scientific Park Cartuja 93. At jam hours cars may cover one half of the bridge lanes for more than one hour. Full-scale tests were carried out to measure...

A general numerical model for the analysis of soil motion due to high-speed train passage and effects on nearby surface and underground structures is presented in this paper. Soil, ballast and structures are represented using a three-dimensional time domain boundary element approach. Material damping has been included in the time domain...

Las estructuras de hormigón armado pueden sufrir daños a lo largo de su vida causados, por ejemplo, por cargas subestimadas o imprevistas o condiciones medioambientales. Una técnica usada para reparar estructuras de hormigón armado consiste en la adhesión de láminas de fibras de carbono (CFRP) en la zona traccionada de éstas. En cualquier...

A general numerical model for the analysis of soil motion due to high-speed train passage and effects on nearby surface and underground structures is presented in this paper. In contrast to other existing approaches, effects on a particular structure and the influence of non-uniform soil conditions along the track can be evaluated. Numerical...

La presencia de daños en estructuras puede deberse a multitud de causas. Por ejemplo, debido a causas accidentales que excedieron aquellas para las cuales fueron diseñadas las estructuras o simplemente porque éstas han superado su vida útil. La presencia de un daño en un sistema mecánico implica un cambio en las propiedades dinámicas del mismo....

The modal parameters (natural frequencies, mode shapes and damping ratios) describe the dynamic properties of a mechanical system. The classical modal analysis, based on Frequency Response Function, require measurements of both the input force and the response. Normally, it is very difficult to measure the excitation on large structures...