Detalle Publicación

ARTÍCULO
Shear behaviour of trapezoidal column panels. II: Parametric study and cruciform element
Autores: López, M.; Loureiro, A.; Bayo Pérez, Eduardo
Título de la revista: JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
ISSN: 0143-974X
Volumen: 108
Páginas: 70 - 81
Fecha de publicación: 2015
Resumen:
El «Cloud computing» describe un modelo innovador de prestación de servicios de forma centralizada usando Internet como medio de distribución. A día de hoy, el análisis de estructuras, que requiere grandes prestaciones de cálculo, no ha sido «migrado» al entorno de Internet, y suele ser desarrollado como software de escritorio en contra de la tendencia actual del mercado informático. En este artículo se expone la arquitectura de una aplicación web para el análisis y diseño de estructuras, que consistirá en un paquete de servicios web como SaaS (Software as a Service) y estará compuesta por 4 módulos: un modelador 3D, un software de análisis, un software de diseño y un módulo CAD. También se exponen las herramientas actuales para su desarrollo como una aplicación integrada en el cloud. Por último, se desarrolla una versión preliminar del módulo CAD que genera la documentación gráfica final en formato DXF. In recent years a considerable effort has been dedicated to improve the knowledge on the behaviour of semi-rigid steel connections by techniques such as the component method. One of the most important components of the connections is the column web under shear. This component has a well-known and defined behaviour for the case of rectangular panels, which results in internal beam to column joints with beams of equal depth. However, when the right and left beams have different depths the shear panel becomes trapezoidal, and the application of the formulation corresponding to rectangular panels produces inaccurate results. The results of different laboratory tests and finite element simulations have been shown in the companion Part I paper. Also a mechanical model was proposed to characterize its behaviour. In the present work, the results of a wide parametric study, carried out by means of calibrated finite elements models, are shown. These results form the basis to characterize the different components, and define the analytical expressions for the stiffness of the proposed mechanical model. Additionally, a cruciform finite element has been developed that captures the behaviour of the proposed mechanical model. This general cruciform element is suitable for semi-rigid connections and can be used for the global analysis of semi-rigid steel frames. Finally, this approach is applied to several practical cases and the results are shown.