FLOOR CONSTRUCTION METHOD FOR STEEL STRUCTURE USING WEAK-AXIS SEMI-RIGID CONNECTION OF H-SHAPE COLUMN

摘要

The present invention relates to a floor construction method for a steel structure using weak-axis semi-rigid connection with improved workability and economic feasibility by differing in beam connection method of the strong-axis direction and the weak-axis direction of an H-shaped column to thereby change the beam cross section of the strong-axis direction and the weak-axis direction when a floor frame of a steel structure is constructed. The floor construction method according to a preferred embodiment of the present invention includes the steps of: (a) rigid-joining a connection bracket which is a H-shaped steel of a predetermined length to the outer surface of both flanges of a column to a predetermined height in the longitudinal direction of the H-shaped column so as to be formed in the strong-axis direction of the column, and rigid-joining a plate-shaped shear tap to both sides of a column web to protrude beyond the column flange so as to be formed in the weak-axis direction of the column; (b) installing columns at predetermined intervals; (c) connecting the H-shaped strong-axis direction beam to the connection bracket from the strong-axis direction between the columns by respectively putting cover plates at both end portions, and connecting the web of the beam and the shear tap with each other by inserting both end portions of the H-shaped weak-axis direction beam between the flanges of the columns to a predetermined length from the weak-axis direction between the columns to thereby install a beam to the columns; (d) respectively connecting a vertical part and a horizontal part of a top angle, which has an L-shaped cross section having a horizontal part extending in the horizontal direction from the bottom end portions of vertical parts, to the web of the column and an end portion of the upper flange of the weak-axis direction beam at both end portions of the weak-axis direction beam; (e) connecting a plurality of shear connectors to the upper portion of the flange of the beam at predetermined intervals; and (g) pouring concrete above a deck plate.