Buckling analysis of buildings braced by frameworks, shear walls and cores

Author: Zalka K.A.^{1, *}

Source: The Structural Design of Tall Buildings, Volume 11, Number 3, September 2002 , pp. 197-219(23)

Publisher: John Wiley & Sons, Ltd.

Abstract:

A simple hand method is presented for the three-dimensional stability analysis of buildings braced by frameworks, coupled shear walls, shear walls and cores. Sway buckling behaviour is characterized by three types of deformation: the full-height ‘local’ bending of the individual columns, wall sections, shear walls and cores, the full-height ‘global’ bending of the frameworks and coupled shear walls, which is associated with the axial deformations of the column and wall sections, and the shear deformation of the frameworks and coupled shear walls. Based on the stiffnesses associated with these three types of deformation, a closed formula is derived for the calculation of the sway critical load. An analogy between bending and torsion is used to carry out the pure torsional buckling analysis. The interaction between the bending and shear modes as well as among the basic buckling modes (sway in the principal directions and torsion) are taken into account. A worked example with step-by-step instructions shows the easy use of the method. The results of a comprehensive accuracy analysis involving 73 multistorey buildings are also given together with comparisons with other analytical methods. Copyright © 2002 John Wiley & Sons, Ltd.

Language: English

Document Type: Research article

DOI: http://dx.doi.org/10.1002/tal.194

Affiliations: 1: Szent Istvan University, Budapest, Hungary *

Publication date: 2002-09-01

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