Eccentric Compression Strength of Rectangular Concrete-Filled Tubular Columns Using High-Strength Steel Thin Plates
Publication: Journal of Structural Engineering
Volume 143, Issue 5
Abstract
An experimental study was performed to investigate the structural behavior of thin-walled rectangular concrete-filled tubular (RCFT) columns. This study mainly focused on the effects of a high-strength steel slender section on the overall eccentric compression capacity. The test parameters included the width-to-thickness ratio of steel plates, yield strength of steel plates, and use of stiffeners. Five specimens were tested under eccentric axial loading. In the slender-section specimens, despite early local buckling, significant postbuckling reserve strength developed. Consequently, the predictions of a current specification significantly underestimated the load-carrying capacity of the slender-section specimens. The specimens strengthened with vertical stiffeners exhibited enhanced strength and ductility, attaining the plastic capacity of the composite section. Furthermore, a design method of vertical stiffener was developed for high-strength steel RCFT columns.
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Acknowledgments
This research was supported by grants from the High-Tech Urban Development Program (09 R&D A01) and R&D Policy Infra Program (Code 11-Technology Standardization-09-01), funded by the Ministry of Land, Infrastructure and Transport (MOLIT) of the Korean Government.
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Published In
Journal of Structural Engineering
Volume 143 • Issue 5 • May 2017
Copyright
©2016 American Society of Civil Engineers.
History
Received: Feb 10, 2016
Accepted: Oct 12, 2016
Published online: Dec 5, 2016
Published in print: May 1, 2017
Discussion open until: May 5, 2017
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