CONCRETE-FILLED STEEL TUBE IN WHICH FIRE-RESISTANT AND LATERAL BINDING POWER ARE IMPROVED

摘要

PURPOSE: A concrete-filled steel tube is provided to increase fire-resistant and lateral binding power and to maximize the lateral confinement effect of the steel pipe.;CONSTITUTION: A concrete-filled steel tube comprises a hollow steel pipe(110), a helix wire(120), and a plurality of longitudinal direction wires(130) and a concrete(140). The helix wire is installed in the steel tube inner in the longitudinal direction of the steel pipe. A plurality of longitudinal direction wires is installed in the longitudinal direction of the steel pipe in order to be fixed to the helix wire. The concrete is filled in the helix wire and the steel pipe in which the longitudinal direction wire is installed.;COPYRIGHT KIPO 2010