Diagramas de interacción axil-flector en secciones doble “T”. Empleo de programa Matlab en aplicaciones estructurales a nivel de sección (parte I) = Axial-bending interaction diagrams for “I” sections. Structural applications related to section study usin
DOI:
https://doi.org/10.20868/ade.2015.3033Keywords:
Método multicapa, iteración, diagrama, plasticidad, acero, matlab, Multi-layer method, iteration, diagram, plasticity, steelAbstract
El método multicapa es una potente herramienta de cálculo en el campo de la ingeniería para tratar problemas a nivel de sección. Este método permite tratar problemas relacionados con el comportamiento no-lineal de los materiales, el empleo de materiales con diferentes propiedades en una misma sección, o problemas relacionados con gradiente de temperatura, entre otros. Dos aplicaciones serán tratadas en dos artículos independientes. En este documento el método multicapa se empleará para generar un diagrama de interacción axil-momento para secciones tipo doble “T”. La sección de acero se estudiará respecto al régimen elástico y plástico, y se propondrá un parámetro que aportará información sobre la reserva plástica de la sección, cuando actúan simultáneamente un axil y un momento flector, la denominada área plástica. Se ha empleado como entorno de programación el software Matlab para desarrollar el contenido de este artículo.
Abstract
Multi-layer method is a powerful tool to solve structural engineering problems from a section point of view. This method can solve problems related to non-linear material behavior, different materials at the same section, or aspects related to temperature gradient, among others. Two applications shall be explained in two separate technical papers. In this paper multilayer method shall be used to generate an axial-bending interaction diagram for “I” steel sections. The section shall be studied from elastic and plastic material properties and a parameter shall be proposed (plastic area) in order to obtain the plastic capacity of a section produced by axial forces and bending moment acting simultaneously. Matlab software had been employed to develop the content of this technical paper.
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References
Simoes da Silva, L.; Simoes, R.; Gervásio, H. (2010)
Subramanian, N. (2008). Design of Steel Structures. Oxford University press
Álvarez Cabal, R.; Benito Muñoz, J.J. (2005). Ejercicios de Estructuras Metálicas y Mixtas Volumen I: Cálculo Editorial Servicio de Publicaciones de ETSIIM-UPM.
Eurocode 3: Design of Steel Structure Par 1-1: General rules and rules for buildings (2005).
European Standard EN 1993-1-1(2005).
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