Search International and National Patent Collections
|1. (WO2017155121) JOINT STRUCTURE USING STEEL PIPE COLUMN FILLED WITH CONCRETE, AND METHOD FOR MANUFACTURING SAME|
|Applicants:||JFE STEEL CORPORATION
|Title:||JOINT STRUCTURE USING STEEL PIPE COLUMN FILLED WITH CONCRETE, AND METHOD FOR MANUFACTURING SAME|
Provided is a joint structure using a CFT column with which a vertical-direction load applied to a beam made of H-shaped steel or to an RC slab can be more efficiently transmitted to concrete filled within a steel pipe column, and which can withstand a larger load. As a steel pipe column 10 the inside of which is filled with concrete 12, a steel pipe with inner surface ribs is used, the steel pipe including on the inner surface thereof a plurality of ribs extending in a spiral shape with intervals therebetween, and including on the outer surface thereof one projection bead extending in a spiral shape. A pair of outer diaphragms 20, 30 is welded on the outer peripheral surface of the steel pipe column, and a beam or an RC slab is connected to the outer diaphragms. A projection bead 16 is interrupted at intervals equal to or greater than the thickness of the projection bead at positions where the outer diaphragms 20, 30 are disposed, and the outer diaphragms 20, 30 are disposed so as to be fitted into the areas where the projection bead is interrupted.