This paper conducts an experimental study on the axial compressive performance of FRP-steel-concrete composite columns. Nine short columns were produced and evaluated in study, comprising three concrete-filled steel tube reference six columns, respectively denoted as “reference columns” “composite columns”. Two categories failure modes, including shear waist drum, observed from experiments. The...

This paper presents the difference in behavior between hollow-core fiber reinforced polymer-concrete-steel (HC-FCS) columns and conventional reinforced concrete (RC) columns under vehicle collision in terms of dynamic and static forces. The HC-FCS column consisted of an outer FRP tube, an inner steel tube, and a concrete shell sandwiched between the two tubes. The steel tube was hollow inside a...

The failure of a reinforced concrete member strengthened with FRP laminates may be caused by crushing of concrete, rupture of FRP laminates, or by the de-lamination of the FRP sheet. Therefore, the effectiveness and failure mode of fiber-reinforced polymer (FRP) sheets applied to beams and columns is related to the degree of adhesion of the epoxy to the concrete surface. When a peeling or de-la...

The application of concrete is severely limited in construction cold areas. However, the local ice has functioned as a potential substitute for long time. In order to make efficient use overcome its weaknesses low strength and poor ductility, an innovative type ice-filled large rupture strain (LRS) fiber-reinforced polymer (FRP) tube column was developed. system consists external LRS FRP tubes ...

The use of fibre-reinforced polymer (FRP) to confine concrete columns improves the strength and ductility by reducing passive lateral confinement pressure. Many numerical analytical formulations have been proposed in literature describe compressive behaviour FRP confined under both monotonic cyclic loads. However, effect a stress/strain level has not well defined because lack well-defined strat...

Abstract Concrete-filled steel tube (CFST) columns are widely used in civil engineering because of their excellent bearing capacity; however, the reinforcement CFST lacks effective measures. To strengthen quickly and effectively, two methods, namely, winding FRP (fiber reinforced polymer) or strips, were explored this work. Two unconfined columns, eight FRP-strengthened four welded strip-streng...