Resumen
Lateral torsional buckling of beams is a very important issue in the design of steel structures. Currently, this phenomenon is accounted for in a simplified way, namely by determining the critical moment of lateral torsional buckling for the theoretical fork support. The literature on the subject does not provide clear analytical solutions for other support conditions. This paper reports an original approach to the elastic restraint of warping and the elastic restraint of lateral rotation of beams at the support nodes. A decided advantage offered by the proposed solution is more optimal design of steel beams.