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Comparative study of trusses to determine the influence of the geometry in the structural efficiency, according to the directions of the principal stresses
Señís López, Roger; Brufau Niubó, Roberto; Sastre Sastre, Ramon; Carbajal Navarro, Eusebio Carlos
Universitat Politècnica de Catalunya. Departament d'Estructures a l'Arquitectura; Universitat Politècnica de Catalunya. Departament de Construccions Arquitectòniques I; Universitat Politècnica de Catalunya. Departament de Construccions Arquitectòniques II; Universitat Politècnica de Catalunya. LiTA - Laboratori d'Innovació i Tecnologia en l'Arquitectura
This study compares flat lattice girders mounted on two supports, based on various design parameters, to determine which have better structural performance and what geometries are more efficient. The fundamental goal is to determine the relationship of performance and structural behavior of each type of framework structure, with respect to the principle of optimization and improvement in the efficiency of the trusses if their geometry adapts to the directions of the principal stresses and, of course, to the trajectory of the isostatic lines of the equivalent continuous structural resistant element under the loading actions. In this study, 256 models of lattice girders, with different triangulations, are analyzed to determine their performance and structural behavior. The results conclude that the trusses gain up to 25-35% efficiency when they identify the trajectory of the isostatic lines generates by the acting loads.
Àrees temàtiques de la UPC::Edificació::Elements constructius d'edificis::Càlcul d'estructures d'edificis
Tensor products
Structural design
Lattice girders (trusses)
structural performance
structural optimization
directions of the principal stresses
isostatic lines
Productes tensorials
Disseny d'estructures
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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