Influence of Helical Spring Diameter on the Mechanical Response of Spiral Reinforcement Columns: A Finite Element Analysis

Abstract

This research examines the behavior of Spiral Reinforcement Columns (SRCs), an innovative structural system consisting of concrete-filled steel tubes augmented with spiral springs, under diverse loading scenarios. Utilizing Finite Element Analysis (FEA), the study evaluates the impact of varying spiral spring diameters on the SRCs' performance. The findings reveal that springs with an 84 mm diameter significantly improve suspension efficiency over those with diameters of 64 mm and 80 mm. Springs with larger diameters demonstrate enhanced resistance to deformation, diminished bending, and lower stress levels. As a result, SRCs equipped with larger diameter springs exhibit superior stiffness, strength, ductility, and energy absorption capabilities compared to their counterparts with smaller diameters. The outcomes support the potential of SRCs with spiral springs as an effective seismic-resistant structural alternative.