Análise de estruturas de aço com ligações semi-rígidas em teoria de 2a ordem

Abstract

This work presents a procedure for first and second order elasticanalysis of plane steel structures considering semi-rigid connections bythe use of a stiffness matrix developed especially for this purpose. Insecond order analysis, the effect of the influence of the axial force onmember stiffness and the P- effect can be taken into account, and thestructural global instability load can be obtained. The connectionsstudied were chosen between the most common in Brazil and that present great utilization potential. The models adopted for the moment-rotation curves of these connections were obtained of recent publications of international researchers. A computer program was developed with the implementation of the analysis procedure and some examples were processed. The results were compared with results of others authors and others computer programs, that permitted to prove the accuracy and the procedure adaptation.