Avaliação teórico-experimental do comportamento estrutural de sistemas treliçados espaciais

Abstract

The main objective of this research work is related to the conception, structural design and theoretical-experimental modelling of three-dimensional lattice structural systems used for steel, reinforced concrete and steel-concrete structures shoring. Throughout the study, a critical evaluation is carried out accompanied by detailed discussions about the experimental test results performed on three structural models of lattice space frames. The investigated models present a span of 10 meters with transversal spacing between the trusses of 1.5 meters. Throughout the study are also carried out experimental tests of the isolated components and main systems structural connections. The structures are submitted to a reaction slab's loadings and are monitored with all necessary logistics and equipment to obtain the structural response and evaluation of the global structural behavior of the system. Therefore, based on the obtained experimental structural response of the models (vertical and lateral translational displacements, collapse loads and ruin modes behavior), it becomes possible to evaluate more clearly the investigated systems efficiency, propose reinforcements on the structural set, in addition to corroborating and calibrating new structural models, expanding the knowledge about the structural behavior of this type of structure and making the system safer for the design practice.