Publication: Estudio de la estabilidad estructural y diseño alternativo de una estructura metálica
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2017-09
Defense date
2017-10-17
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Abstract
El origen de este trabajo surge del encargo de estabilizar una estructura metálica en fase
de construcción. Dicha estructura presentaba desplazamientos excesivos en una dirección no
prevista en fase de proyecto.
Para encontrar la solución al problema, se ha calculado la estructura original,
posteriormente se propuso una solución de refuerzo y finalmente una solución alternativa de
diseño. Los cálculos realizados en cada apartado se basaron en el cumplimiento del método de
los estados límite. El cumplimiento de estos requisitos se garantizó aplicando las ecuaciones de la
elasticidad, resistencia de materiales y las indicadas en las normas de referencia.
Los resultados obtenidos fueron que la estructura original cumplía con los estados límite
para las acciones previsibles según el CTE, sin embargo, no cumplió con ellos para acciones que
se podrían producir por mantenimiento, viento racheado o acciones accidentales.
Se desarrolló una solución de refuerzo con cables de ø16 mm que permitió cumplir con los
estados límite y continuar con el proyecto. Además, se propuso una solución alternativa que
habría eliminado los problemas surgidos desde el inicio. Ambas soluciones mejoraron el
comportamiento frente a acciones dinámicas de la estructura original.
Se comprendió la importancia de un diseño correcto desde el inicio y las singularidades
que pueden tener estructuras ligeras y poco rígidas.
The origin of this work arises from the task of stabilizing a metal structure in the construction phase. This structure showed excessive displacements in a way not foreseen in the project phase. In order to find the solution to the problem, the original structure was calculated, then a reinforcement solution was proposed and finally an alternative design solution. The calculations performed in each section were based on compliance with the limit states method. Compliance with these requirements was ensured by applying the equations of elasticity, strength of materials and those indicated in the reference standards. The results obtained ensured that the original structure exceeded the requirements of the limit states for the predicted forces according to the CTE, however, the structure did not satisfy the limit states could produce by maintenance, wind or accidental actions. A reinforcement solution with ø16 mm cables was developed that allowed to exceed the requirements of the limit states and to continue with the project. In addition, an alternative solution was proposed that would have eliminated the problems that had arisen from the beginning. Both solutions improved the behavior against dynamic actions of the original structure. It was understood the importance of a correct design from the beginning and the singularities that can have light structures and less rigid
The origin of this work arises from the task of stabilizing a metal structure in the construction phase. This structure showed excessive displacements in a way not foreseen in the project phase. In order to find the solution to the problem, the original structure was calculated, then a reinforcement solution was proposed and finally an alternative design solution. The calculations performed in each section were based on compliance with the limit states method. Compliance with these requirements was ensured by applying the equations of elasticity, strength of materials and those indicated in the reference standards. The results obtained ensured that the original structure exceeded the requirements of the limit states for the predicted forces according to the CTE, however, the structure did not satisfy the limit states could produce by maintenance, wind or accidental actions. A reinforcement solution with ø16 mm cables was developed that allowed to exceed the requirements of the limit states and to continue with the project. In addition, an alternative solution was proposed that would have eliminated the problems that had arisen from the beginning. Both solutions improved the behavior against dynamic actions of the original structure. It was understood the importance of a correct design from the beginning and the singularities that can have light structures and less rigid
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Keywords
Estructuras metálicas, Ensayo de materiales, Resistencia de materiales