Nonlinear Numerical Modeling of Ultra-High-Performance Concrete Slender Columns
Volume Title: ICASGE2025
Paper ID : 1098-ICASGE-FULL (R1)
Authors
1Structural Engineering, Faculty of Engineering, Tanta University
2Tanta university
Abstract
Ultra-high-performance concrete (UHPC) represents a significant advancement in structural engineering, due to its mechanical properties, including high compressive strength, enhanced tensile behavior, and excellent durability. The behavior of slender columns made from UHPC under axial and eccentric loads requires rigorous analysis to account for the combined effects of material nonlinearity, geometric imperfections, and stability.
This study utilizes advanced numerical modeling in the finite element software ABAQUS to analyze the structural performance of UHPC slender columns. The simulation framework integrates detailed material models for UHPC, accounting for its stress-strain behavior, cracking characteristics, and strain-hardening properties. Geometric imperfections and second-order nonlinearities are incorporated to accurately capture critical responses, including buckling behavior. The results are compared with experimental data, confirming the accuracy of the proposed modeling approach. Parametric studies are being performed to assess the influence of critical factors, such as slenderness ratio, load eccentricity, and material properties, on the load-carrying capacity and stability of the columns.
The results demonstrate that the numerical simulations accurately predict load-displacement curves and the crack propagation process, showing good agreement with experimental data
This study utilizes advanced numerical modeling in the finite element software ABAQUS to analyze the structural performance of UHPC slender columns. The simulation framework integrates detailed material models for UHPC, accounting for its stress-strain behavior, cracking characteristics, and strain-hardening properties. Geometric imperfections and second-order nonlinearities are incorporated to accurately capture critical responses, including buckling behavior. The results are compared with experimental data, confirming the accuracy of the proposed modeling approach. Parametric studies are being performed to assess the influence of critical factors, such as slenderness ratio, load eccentricity, and material properties, on the load-carrying capacity and stability of the columns.
The results demonstrate that the numerical simulations accurately predict load-displacement curves and the crack propagation process, showing good agreement with experimental data
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