Unified buckling length coefficient for sway and non-sway structures

作者：Maria Gil Martin Luisa; Hernandez Montes Enrique^*

来源：Engineering Structures, 2012, 40: 436-444.

DOI：10.1016/j.engstruct.2012.03.008

• Buckling length
• Buckling coefficient
• Elastic instability

Traditionally, a distinction has been made between sway and non-sway behavior in determining the buckling length of the columns of any structure. Both behaviors are treated using a common assumption: for the beams and columns that connect at one node, the remote ends have the same rotation. This assumption is employed for the calculation of the buckling length using a new formulation that explicitly considers the stiffness providing lateral restraint. Two interesting results come out of this new formulation: (1) The traditional classification between sway and non-sway structures can be abandoned, now that a single formulation for the buckling coefficient is available that considers the stiffness of the bracing system, and (2) a tool for the design of the bracing systems, that allows the effect of the stiffness of the bracing system on the buckling coefficients of the columns of a structure. Several examples are presented.

• 出版日期2012-7