Joint Type and the Behaviour of Frame Beams

• Published in: Structural Engineering, Mechanics and Computation pp. 283 - 290
• Main Author: Masarira, A.
• Format: Book Chapter
• Language: English
• Published: Elsevier Science 2001
• ISBN: 9780080439488; 0080439489
• DOI: 10.1016/B978-008043948-8/50027-8

The influence of joint construction on the stability behavior of steel frames is investigated in this chapter. Using finite element models, common types of flame joints with different joint stiffening arrangements are investigated to determine their stiffness values. Through the modeling and calculation of portal frames, using finite elements, a direct relationship can be observed between the lateral torsional buckling load of the flame beams and the joint design. Comparing the critical loads obtained through finite elements and those from the equivalent member method, reliable coefficients that estimate the joint type and facilitate a simplified and effective calculation of flame beams are derived. The interrelation among beam critical loads, joint types, and bracing through lateral restraints is also analyzed in the chapter.