Determinação do comportamento monotônico e resposta cíclica do painel constituído por placas OSB reticulado de aço do sistema Light Steel Framing

Abstract

Light Steel Framing (LSF) is a self-supporting construction system that has been gaining space in the Brazilian civil construction market, due to its relatively low production cost, manufacturing simplicity, speed of execution and construction rationalization. The constructive rationalization achieved by this type of construction shows that the system can solves the increasing demand for habitations in Brazil due to its potential for large-scale use and, therefore, be inserted into the scope of social technologies. The system consists of cold-formed galvanized profiles and the wall sheathing of the steel structure is usually carried out with OSB (Oriented Strand Boards) or cement board. This type of panel can also contribute to the wall's shear strength (shear wall) due to the mechanical strength of the constituent materials. Thus, the present research involves experimental to investigate the structural performance of some panels with shear wall function. In order to do so, the contribution of OSB plates will be verified in the increase of rigidity in the plane of these walls, with the objective of stabilizing the structure in terms of lateral forces and, if possible, reducing the consumption of steel used in the LSF system. The experimental analyzes were carried out through four assays using full-scale panels, what it means, three assays with OSB plates and one assay with bracing only with two vertical trusses consisting of stamped fitting profiles, subjected to uniform vertical loading, monotonic lateral loading and also cyclic side loading. Failure modes, shear forces and panel stiffness were observed.