Numerical Investigation on Concrete Filled Steel Tube Composite Circular Columns Under General Loading

Year : 2025 | Volume : 13 | Special Issue 02 | Page : 164 199
    By

    Singamsetti Mohan Sai,

  • P. Poluraju,

  1. PG Student, Department of Civil Engineering, Koneru Lakshmaiah Education Foundation University, Guntur, Andhra Pradesh, India
  2. Professor, Department of Civil Engineering, Koneru Lakshmaiah Education Foundation University, Guntur, Andhra Pradesh, India

Abstract

Concrete-filled steel tube (CFST) composite columns are extensively utilized in civil engineering constructions because of their numerous structural advantages, such as superior seismic performance, high load- bearing capacity, fire resistance, remarkable ductility, and ability to absorb energy effectively, especially in areas prone to seismic activity. CFST columns are employed in tall buildings and bridges to enhance rigidity and increase bearing capacity, but their behavior can be affected by buckling. There is a critical necessity to investigate the performance of these columns under diverse conditions. The numerical method serves as a valuable tool to complement experimental studies and is utilized to examine the impact of various parameters due to constraints related to cost, equipment, and time associated with experimental programs. The present study considers various parameters including different slenderness ratios (expressed as the ratio of column height to cross-section dimension, H/D and varying steel tube thickness to column dimension ratios D/t), and different compressive strength of concrete and different yield strength of steel tube under concentric axial, uniaxial, and biaxial loading conditions. First, the software package “ABAQUS/CAE 2017” was utilized to create a finite element model for this project. In order to greatly expand the field of study, extensive numerical models were conducted. 144 specimens were used in the numerical work. In addition, the numerical results were validated with the analytical computations from the various international codes/standards to provide the accuracy of the predictions for the final carrying loads. Two distinct international codes and standards, the American Institute of Steel Construction (AISC) and the Architectural Institute of Japan standards (AIJ), are validated to the measured compressive axial, uniaxial, and biaxial capacities. The comparisons also included some suggested equations from the literature. The most cautious design code for estimating the CFST columns’ load capacity is AIJ.

Keywords: Numerical investigation, composite CFST, load carrying capacity, general loading, steel tube, infilled concrete.

[This article belongs to Special Issue under section in Journal of Polymer and Composites (jopc)]

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How to cite this article:
Singamsetti Mohan Sai, P. Poluraju. Numerical Investigation on Concrete Filled Steel Tube Composite Circular Columns Under General Loading. Journal of Polymer and Composites. 2025; 13(02):164-199.
How to cite this URL:
Singamsetti Mohan Sai, P. Poluraju. Numerical Investigation on Concrete Filled Steel Tube Composite Circular Columns Under General Loading. Journal of Polymer and Composites. 2025; 13(02):164-199. Available from: https://journals.stmjournals.com/jopc/article=2025/view=209324


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Special Issue Subscription Original Research
Volume 13
Special Issue 02
Received 23/04/2024
Accepted 30/07/2024
Published 24/01/2025
Publication Time 276 Days
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