Up-down butt joint node of steel pipe combination column

The utility model provides a steel pipe combination column up-down butt joint node which comprises an upper combination column, a lower combination column, a column top partition plate and a reinforcing plate, the column top partition plate is arranged between the upper combination column and the lower combination column and welded with the upper combination column and the lower combination column in a full penetration and equal-strength mode, and the section of the column top partition plate is slightly larger than that of the combination columns. Notches are formed in the positions, corresponding to the joint inner wall of the cavity of the combination column, of the column top partition plate, the notches are symmetrically formed in the two sides of the combination column, the inner sides of the notches are flush with the peripheral column wall of the combination column, and the reinforcing plates are embedded in the notches and welded to the combination column and the column top partition plate. By means