Modelos de comportamiento seccional de hormigón armado ajustados a ensayos mediante algoritmos metaheurísticos
Author
López López, Andrés TomásDirector/a
Tomás Espín, AntonioUniversity
Universidad Politécnica de CartagenaPrograma de doctorado
Programa de doctorado en Medio Ambiente y Minería SostenibleFecha de lectura
2015-07-09Publication date
2015-05Publisher
Andrés Tomás López LópezKeywords
HormigónAlgoritmos metaheurísticos
Abstract
[SPA] En la tesis doctoral "Modelos de comportamiento seccional de hormigón armado ajustados a ensayos mediante algoritmos metaheurísticos" se proponen unas expresiones de comportamiento seccional capaces de proporcionar aspectos relativos a los estados de plastificación y último de secciones rectangulares de hormigón armado, como son el momento, la curvatura y el giro. Dichas expresiones se obtienen calibrando unas expresiones previamente propuestas en la literatura científica con ensayos experimentales correspondientes a vigas y pilares de sección rectangular. En el proceso de calibración se emplean técnicas de optimización basadas en algoritmos metaheurísticos. [ENG] Modelling concrete structures requires the implementation of numerical models capable of reproducing the nonlinearity of this problem adequately. In particular, the seismic behaviour of these structures requires the application of different types of models, such as models of sectional behaviour, hysteresis models and global models, being the interaction between them essential to simulate the problem in an integral way. Seismic analysis of structures is a really time-consuming process, so that the
models involved need to be accurate and efficient from the point of view of computing time. Therefore, it is important to obtain simple expressions that adequately reproduce the yield and ultimate behaviour of reinforced concrete sections, which is necessary to define the properties of the plastic hinges generated in the structure when acting the seismic load. Obtaining these expressions involves proper calibration with experimental tests. In particular, if these expressions must be ...
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