Seismic Performance of Reinforced Concrete Filled Steel Tubes in Soil

Diego A. Aguirre-Realpe et al.
Wed, 22 Apr 2026 17:11:00 PDT

Reinforced concrete filled steel tube pile-columns are structural elements commonly used in bridge supports in high seismic regions because RCFSTs provide increased levels of strength, ductility, and energy dissipation as compared with traditional systems such as reinforced concrete (RC) or steel substructures. This study includes experimental and analytical studies that considered three main parameters: the diameter-to-thickness (D/t) ratio, the above-ground length (La), and the soil stiffness.