Composite Girder Utilizing Kaiser Deck Manufacturing Method

摘要

In the present invention, the flat deck is bent so that the upper part is opened and the Kaiser truss roots are arranged in the vertical direction so as to serve as a horizontal and vertical shear connector. The stranded wire is arranged to introduce a prestress, The present invention relates to a method of manufacturing a composite beam using a Kaiser truss deck formed of a member. In a preferred embodiment of the present invention, (a) a Kaiser truss roots are arranged on a flat deck in such a manner as to be offset to the other end in the width direction perpendicular to the longitudinal direction, and the other side in the width direction of the flat deck is bent, A web extending vertically downward at one end of the upper flange; a lower flange extending horizontally in a direction opposite to the upper flange at a lower end of the web; and a lower flange extending vertically at an outer end of the lower flange, The first unit member including a vertical joining portion extending in the horizontal direction and a horizontal reinforcing portion extending in the horizontal direction in the web direction at an upper end of the vertical joining portion; (b) a point where the root of the Kaiser truss is offset to the other end in the width direction perpendicular to the longitudinal direction, and the point spaced a certain distance inward from the other end in the width direction of the flat deck is bent And is folded twice in a direction perpendicular to a predetermined distance from the one side end in the width direction of the flat deck to be horizontally reinforced so as to extend in the horizontal direction in the web direction at the upper end of the vertical engaging portion and the vertical engaging portion Forming a second unit member by forming the second unit member; (c) assembling the first and second unit members so that the vertically coupled portions of the first and second unit members face each other to form a steel mold; (d) forming a web and a lower flange by vertically folding a vertically upper portion of the second unit member at a position spaced apart from the vertical coupling portion by a predetermined distance in the direction of the upper flange, thereby forming a steel mold having an open top; (e) placing at least one strand of strand inside the steel formwork; (f) tensioning the strand to introduce a prestress; (g) Placing the lower concrete to a certain height at the lower end of the interior of the steel formwork.