PRESTRESSED STEEL GIRDER AND METHOD FOR MANUFACTURING PRESTRESSED STEEL GIRDER

摘要

According to one aspect of the present invention, there is provided a stapler comprising: a stomach portion formed to be convexly bent upward; a flange joined to an upper surface and a lower surface of the stomach portion; And a tensioning member provided on the whole or a part of the abdomen in the longitudinal direction of the abdomen to prevent buckling of the abdomen and to which the tension member is fixed, The upper and lower surfaces of the abdomen are deformed horizontally by the downward bending deformation formed by the prestress introduced by tightening the tension member after the tension member is fixed to the tension fixing member, And the lower surface is welded in a state of being deformed horizontally, the flange is bonded to the abdomen, and the prism And a prestressed state is maintained even after the lances are removed.