Topology Optimization and Structural Performance Analysis of Steel Fiber-Reinforced Concrete Beams

Abstract

The increasing environmental impact of conventional concrete production necessitates finding new ways to mitigate this problem, which must improve both the structural performance and the ecological sustainability of construction. This study focuses on topology optimization and the homogenized modeling of steel fiber-reinforced concrete (SFRC) beams to enhance structural performance. Using the Concrete Damage Plasticity Model (CDPM) in Abaqus for three-dimensional beam analysis to investigate the performance of SFRC beams under uniform pressure with varying steel fiber content 0.22%, 0.44%, and 0.89% by volume. Steel fibers with a 1 mm radius and 12 mm length are modeled as embedded, and their interaction with the concrete matrix is simulated. Topology optimization is performed using Abaqus' TOSCA module, emphasizing reducing strain energy while keeping to a 30% volume constraint. The results indicate notable enhancements in material efficiency, crack resistance, and cost-effectiveness, offering important insights into the sustainable and economical structural design of SFRC. The results suggested that material usage can be reduced, while simultaneously enhancing load-bearing capacity and fracture resistance, facilitating the creation of lighter and stronger components with diminished reliance on conventional concrete steel reinforcement.