Finite Element Modelling of Concrete Filled Double Skin Steel Tubular Columns under Cyclic Axial Compression Load

  • Riyadh J. Aziz Civil Engineering Department, College of Engineering, Al-Nahrain University
  • Laith Kh. Al-Hadithy Civil Engineering Department, College of Engineering, Al-Nahrain University
  • Shayma M. Resen Civil Engineer, State Company for Steel Industries, Baghdad, Iraq
Keywords: CFDSST, composite columns, finite element modeling, ABAQUS

Abstract

CFDSST Concrete Filled Double-skinned steel tubular columns are composite columns consisting of two concentric circular steel tubes with concrete filler in between.  Finite elements method is considered through the use of the computer program ABAQUS to model CFDSST columns numerically under cyclic axial compression. Damage plasticity model was considered to model the concrete while elastic-plastic model used to model the steel tubes. six CFDSST specimens and three ordinary Concrete Filled Steel Tubular (CFST) specimens were analyzed under static axial compression, while three CFDSST specimens were considered for analysis under cyclic axial compression. The numerical results were presented in terms of axial load axial strain displacement curves. It was found that the ultimate axial load carrying capacity calculated numerically in good agreement with that of the experimentally tested specimens. Also it was concluded that Damage plasticity model used for simulating the behavior of concrete and metal plasticity model used for simulating the behavior of steel produced accurate results as compared to the experimental results.

Published
2017-03-25
How to Cite
Aziz, R., Al-Hadithy, L., & Resen, S. (2017). Finite Element Modelling of Concrete Filled Double Skin Steel Tubular Columns under Cyclic Axial Compression Load. Al-Nahrain Journal for Engineering Sciences, 20(2), 326-340. Retrieved from https://nahje.com/index.php/main/article/view/112