Evaluación de secciones compuestas por perfiles de lámina delgada y concreto simple ante cargas de flexión

Abstract

The design of members for buildings subjected to bending are these reinforced concrete or structural steel is currently not usually the best solution due to the poor use of material, high costs and heavy weights. A study of this caliber that guarantees the efficiency of an alternative constructive method with better conditions would significantly improve the costs of materials, machinery and labor.

This document focuses on the behavior of composite members of different configurations subjected to bending, is studied by means of the parameters established in the ANSI / AISC, NSR-10, ACI-18 and Laboratory tests such as the bending test of four points.

Through the theoretical studies, the stiffness, resistance and efforts of the sections were evaluated in order to categorize them and compare them with each other and with reinforced concrete and steel beams. The effectiveness of the theoretical calculation and the actual behavior of the materials were checked through laboratory tests. The results of the tests showed a very good theoretical validation and a very ductile and favorable bending behavior due to the isolation of the compressed parts and the stressed parts.

Among the main findings it was possible to see a better resistant use of the composite beams with respect to reinforced concrete and steel beams, these had a considerable increase in inertia, rigidity and a decrease in geometric dimensions and stresses. The applications of this type of members were intended for roof beams with little stress due to the low ratio of slenderness of steel structural elements and joists for the formation of mezzanines.