Experimental evaluation of extended endplate beam-to-column joints subjected to bending and axial force

• Autor(a) principal: Lima, L. R. O. de
• Data de Publicação: 2004
• Outros Autores: Silva, L. Simões da, Vellasco, P. C. G. da S., Andrade, S. A. L. de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10316/3988
• topic: Component method; Experimental analysis; Extended endplate joints; Semi-rigid behaviour; Bending moment and axial force

Steel beam-to-column joints are often subjected to a combination of bending moment and axial force. Current specifications for steel joints do not take into account the presence of axial forces (tension and/or compression) in the joints. A single empirical limitation of 5% of the beam's plastic axial capacity is the only enforced provision in Eurocode 3--Part 1.8. The objective of the present paper is to describe an experimental program carried out at the University of Coimbra on extended endplate beam-to-column joints to try to extend the component method philosophy to the combined action of bending moment and axial force. To fulfil this objective, a set of seven extended beam-to-column joints were tested. This paper provides a detailed description of this experimental programme focusing on the moment-rotation curves and individual component assessment. Finally, it reveals that the presence of an axial force on the beam significantly modifies the joint response.