Behaviour of single laced columns versus double laced columns
Date
2014-01-09
Authors
Hasheela, Pamwenafye Fillemon.
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Abstract
This study discusses the behaviour of built-up single columns versus double laced
columns.
Finite Element Analyses was applied to evaluate buckling load, torsion resistance
and modes of buckling. All simulations are performed using ABAQUS Version 6.8
(Dessault Systems, Inc.). An eight-node shell element was used for the nonlinear
solution. To ensure the finite element solution was valid, a convergence study was
concluded. The parametric study has considered different column widths, end
supports and types of brace configuration. The behaviour has been analysed at
varied load ratio. Two cases of different end supports have been investigated.
The results show less variability within different bracing configurations. The Xconfiguration
showed best performance by 3-10% and 1-8% for single and double
laced column respectively. A buckling load variation of 15%-25% and 1%-3% for
single and double laced columns respectively was observed. A combination of
maximum critical load and minimum degree of torsion is achieved at load ratio close
to one.