Print Email Facebook Twitter Lateral-torsional buckling resistance of non-prismatic and prismatic mono-symmetric I-section steel beams based on stress utilization Title Lateral-torsional buckling resistance of non-prismatic and prismatic mono-symmetric I-section steel beams based on stress utilization Author Gomes, J. O. (Universidade de Coimbra; Universidade Federal de Minas Gerais) Simões da Silva, L. (Universidade de Coimbra) Tankova, T. (TU Delft Steel & Composite Structures) Carvalho, H. (Universidade Federal de Minas Gerais; Universidade de São Paulo) Filho, J. O. Ferreira (Universidade de Coimbra) Date 2024 Abstract The lateral-torsional resistance of prismatic double-symmetric I-section beams is accurately predicted using a mechanically consistent Ayrton-Perry approach, combined with a calibrated generalized imperfection. The corresponding design formulation was recently adopted in the revised version of Eurocode 3. However, for prismatic mono-symmetric I-section beams, the General Case shall be used while for non-prismatic beams only the General Method is available. Both methods present a very large scatter and highly underestimate the lateral-torsional buckling resistance. This paper proposes an extension to the General Formulation for non-prismatic beams with arbitrary boundary conditions, partial lateral restraints, and arbitrary loading for mono-symmetric I-sections. Using an advanced numerical model calibrated with experimental test results, a large parametric study is undertaken, and its results are used to assess the available design methodologies and the proposed method. It is concluded that the General Formulation provides excellent safe-sided estimates of the LTB resistance, and it is confirmed the very poor performance of the General Case and the General Method. Subject Eurocode 3General formulationMono-symmetric beamsStabilitySteel To reference this document use: http://resolver.tudelft.nl/uuid:e48feb37-7327-4c3f-99f5-8facdb84f093 DOI https://doi.org/10.1016/j.engstruct.2024.117758 ISSN 0141-0296 Source Engineering Structures, 305 Part of collection Institutional Repository Document type journal article Rights © 2024 J. O. Gomes, L. Simões da Silva, T. Tankova, H. Carvalho, J. O. Ferreira Filho Files PDF 1-s2.0-S0141029624003201-main.pdf 11.03 MB Close viewer /islandora/object/uuid:e48feb37-7327-4c3f-99f5-8facdb84f093/datastream/OBJ/view