Uniaxial Eccentric-Compression Performance Analysis for Double-Plate Connected Concrete-Filled Steel-Tube Composite Columns
Publication: Journal of Structural Engineering
Volume 146, Issue 8
Abstract
In this study, five double-plate connected concrete-filled steel tube (CFST) composite columns were tested under a uniaxial eccentric compressive load. The test phenomena, load–axial displacement curves, strain analyses, and column curve analyses were examined. The effects of different eccentricities and loading directions were compared with respect to the double-plate connected CFST composite columns under uniaxial eccentric compressive load. ABAQUS 6.14-4 software was used to develop models of the double-plate connected CFST composite columns. Load–axial displacement curves and failure modes obtained from the finite element analysis (FEA) models and tests were compared in this study. The FEA results, which were in good agreement with the test results, can well simulate the uniaxial eccentric compression performance of double-plate connected CFST composite columns. Based on the superposition principle and calculation method of the slenderness ratio as per the Standard for Design of Steel Structures (GB50017-2017), the authors proposed a formula for the stable bearing capacity of the double-plate connected CFST composite columns. In addition, a new theoretical formula for the bearing capacity of the uniaxial eccentric compression specimen was proposed. A comparison between the calculated N–M correlation curves and the test and FEA results indicated that the calculation results exhibited good safety and can provide ideas for engineering design.
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Data Availability Statement
The data used to support the findings of this study are available from the corresponding author on request.
Acknowledgments
This study was sponsored by the National Key Research and Development Program of China (Grant No. 2017YFC0703800) and the Science and Technology Planning Project of Hebei Province (No. 16216117). The authors acknowledge the financial support and express their gratitude for the support provided by the structure laboratory of Tianjin University.
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Published In
Journal of Structural Engineering
Volume 146 • Issue 8 • August 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Jul 21, 2019
Accepted: Feb 6, 2020
Published online: May 28, 2020
Published in print: Aug 1, 2020
Discussion open until: Oct 28, 2020
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