Techno Press

Steel and Composite Structures   Volume 19, Number 4, October 2015, pages 967-993
Predicting the axial load capacity of high-strength concrete filled steel tubular columns
Farhad Aslani, Brian Uy, Zhong Tao and Fidelis Mashiri

Abstract     [Full Text]
    The aim of this paper is to investigate the appropriateness of current codes of practice for predicting the axial load capacity of high-strength Concrete Filled Steel Tubular Columns (CFSTCs). Australian/New Zealand standards and other international codes of practice for composite bridges and buildings are currently being revised and will allow for the use of high-strength CFSTCs. It is therefore important to assess and modify the suitability of the section and ultimate buckling capacities models. For this purpose, available experimental results on high-strength composite columns have been assessed. The collected experimental results are compared with eight current codes of practice for rectangular CFSTCs and seven current codes of practice for circular CFSTCs. Furthermore, based on the statistical studies carried out, simplified relationships are developed to predict the section and ultimate buckling capacities of normal and high-strength short and slender rectangular and circular CFSTCs subjected to concentric loading.
Key Words
    composite structures; concrete filled steel tubular columns; high-strength; axial load capacity
(1) Farhad Aslani, Brian Uy:
Centre for Infrastructure Engineering and Safety, The University of New South Wales, Sydney NSW 2052, Australia;
(2) Zhong Tao, Fidelis Mashiri:
Institute for Infrastructure Engineering, Western Sydney University, Penrith NSW 2751, Australia.

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