Numerical Simulation of Ultra- Strength Concrete-filled Steel Columns
نویسندگان
چکیده
Article history: Received: 11. 09. 2013. Received in revised form: 01. 10. 2013. Accepted: 15. 10. 2013. Researches into the constitutive relation of the super high strength and high performance concrete and the stress strain relationship of the ultrastrength concrete-filled steel columns are rare. Therefore, this paper based on continuous mechanics presents the relationship of mathematical description to the concrete deformation behaviors. The compressive behaviors of steel-reinforced super high-strength concrete columns under axial loading were studied with a series of experiments. Two specimens with concrete strengths ranging from 130,1MPa to 137,3MPa and with 121mm circular hollow stub columns with wall thicknesses of 5 mm were manufactured. At the same time, a three dimensional non-linear FE analysis of axial compression was conducted using the finite element program ABAQUS/Standard solver. The numerical results were validated through comparison with experimental data in terms of axial loading and deformation modes.
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