desarrollo de un algoritmo computacional para la estimación de la tensión de cables en puentes atirantados con base en la medición experimental en laboratorio y campo de sus modos y frecuencias naturales de vibración development of an computational algorith for estimating cables'tensile stress on cable-stayed bridges based on experimental laboratory and job site measurements on their natural vibration modes and frequencies

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ID: 131182
2012
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Abstract
En la presente investigación, se propone una nueva metodología para estimar la tensión de los tirantes con base en sus modos y frecuencias naturales de vibración, mediante el desarrollo de un aplicativo computacional apoyado en el método de los elementos finitos (FEM) y en el análisis detallado de las señales. Para ello se presenta en este documento un estado del arte con algunos de los trabajos desarrollados en el mundo, un marco conceptual y la metodología planteada para su desarrollo y ejecución. El aplicativo computacional fue generado en MATLAB® y validado a través de mediciones experimentales en un prototipo a escala y en algunos cables de un puente atirantado en Colombia cuando estaba en proceso de construcción, con el cual se permite estimar la magnitud de la tensión de los tirantes con errores mínimos.
In the present research, is proposed a new methodology for estimating tension forces in cables on the basis of their modes and natural frequencies of vibration, by developing a computer application leaning on the finite element method (FEM) and a detailed analysis of signals. In this paper is presented a state of the art with some of the work done around the world, a conceptual framework and a proposed methodology for its development and implementation. The computer application which was programmed in MATLAB ®, which was validated through experimental measurements on a scaled prototype and some cables of a cable stayed bridge under construction in Colombia, allows to estimate the magnitude of the cable's tension with minimal errors.
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Authors ;Giordano Avellaneda;Ricardo Noguera;Edgar Muñoz
Journal revista brasileira de economia
Year 2012
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