Confiabilidade em elementos estruturais de madeira roliça

For the characterization and normalization of timber structures performance, in particular of timber bridges, the structural effects of importance for its satisfactory performance must be determined. That is, the reliability. Usually to estimate the reliability of these systems, reliability index are used based on the actions and strength and considering the states limits method. The reliability index determination is done using statistical models that represent the structures behavior in service as a function of the structural systems most used in practice. This determination is essential, because these values contemplate in the evaluation of the consequences of the structural rupture. Therefore the objective of this work is to determine the timber bridges reliability of simple round beams being used the reliability index, considering only two random variables the actions and strength. To test the application of the considered procedure, a study of the reliability in a system of timber bridges in simple round beams was carried out considering real actions supplied by the Central Vias Highway Concessionaire. The results shows the efficiency and the applicability of the method proposed for the reliability determination of these structures.