In 2009–2022, to meet the requirement of resilient bridge pier structure (e.g., earthquake resistance, energy dissipation, isolation, resilience) for rapid repair after earthquakes and improve suitability precast segmental piers in medium- high-intensity areas, a assembled CFST with external replaceable dissipator was proposed. Based on ABAQUS finite element analysis software, model is establis...

This paper investigates the structural performance of concrete-filled stainless steel tubular (CFSST) columns composed rectangular and square sections. A fiber-based mathematical model is developed to simulate nonlinear such loaded concentrically accounting for local buckling tube. An accurate lateral pressure model, as well a strength degradation parameter are proposed based on existing test r...

In this study, a machine learning method using gradient boost regression tree (GBRT) model was presented to predict the ultimate bearing capacity of stirrup-confined rectangular CFST stub columns (SCFST) by comprehensive data set and adjusting selected parameters indicated in previous research (B, D, t, ρsa, fcu, fs). The advantage GBRT is its strong predictive ability, which can naturally hand...