Steel frame stress reduction connection

E - Fixed Constructions – 04 – C

Patent

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Details

E04C 3/06 (2006.01) E04B 1/24 (2006.01) E06B 1/12 (2006.01)

Patent

CA 2230112

The present invention provides for improvement of strength performance of connections in structural steel buildings made typically with rolled structural shapes, specifically in beam-to-column (306) connections made with bolt or riveted weld web connections and welded flanges, to greatly reduce the very significant uneven stress distribution found in the conventionally-designed connection at the column/beam weld, through use of slots in column (130) and/or beam webs (136) with or without continuity plates (106) in the area of the column between the column flanges, as well as, optionally extended shear connections (48) with additional columns of bolts for the purpose of reducing the stress concentration factor in the center of the flange welds.

La présente invention apporte une amélioration de la résistance des assemblages dans les bâtiments à charpente métallique construits généralement avec des profilés laminés, en particulier pour les assemblages poutres-poteaux (306) réalisés avec des boulons ou les assemblages rivetés d'âmes soudées et les ailes soudées, afin de réduire fortement les très importantes irrégularités de répartition des efforts rencontrées, dans les assemblages classiques, à la soudure poteau-poutre, et ce grâce à l'emploi de rainures dans les âmes des colonnes (130) et/ou des poutres (136) avec ou sans plaques (106) de renforcement dans la partie du poteau qui est comprise entre ses ailes ainsi que, éventuellement, d'assemblages (48) de cisaillement renforcés, avec des colonnes supplémentaires de boulons servant à réduire le coefficient de concentration d'efforts au milieu des soudures des ailes.

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