Steel pipe column joint structure

Abstract

To improve stress transmission between a circular steel pipe and a square steel pipe with a simple structure.SOLUTION: A steel pipe column joint structure includes a square steel pipe 20, an upper diaphragm 22 provided at the upper end of the square steel pipe 20, a circular steel pipe 40 whose lower end is joined to the upper end of the square steel pipe 20 via the upper diaphragm 22, and a plurality of reinforcing ribs 50 that are provided inside the square steel pipe 20 and extended over side walls 20S to support the upper diaphragm 22 along a non-lap part 40B of the circular steel pipe 40 extending over the adjacent side walls 20S of the square steel pipe 20 in plan view.SELECTED DRAWING: Figure 2

Claims

1. Rectangular steel pipe and A diaphragm provided at the end of the aforementioned rectangular steel pipe, A circular steel pipe whose end is joined to the end of the rectangular steel pipe via the diaphragm, A plurality of reinforcing ribs are provided inside the rectangular steel pipe and, in a plan view, are stretched across the side walls along the portion of the circular steel pipe that extends across adjacent side walls of the rectangular steel pipe, supporting the diaphragm. A steel pipe column joint structure equipped with the following features.

2. The circular steel pipe is positioned such that, in a plan view, its outer circumference is inscribed within the outer shape of the rectangular steel pipe. The steel pipe column joint structure according to claim 1.

3. The reinforcing rib is welded to the diaphragm. The steel pipe column joint structure according to claim 1.

4. The aforementioned rectangular steel pipe or circular steel pipe has a facing diaphragm that is opposite to the diaphragm and has the same plate thickness as the diaphragm, A steel beam is joined to the diaphragm and the opposing diaphragm. A steel pipe column joint structure according to any one of claims 1 to 3.

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