Fabrication method for horizontal preflex girder and the curved girder with non-uniform normal stresses equilibrated

摘要

A method of manufacturing a horizontal direction preflex girder according to the present invention is a method of manufacturing a horizontal direction preflex girder by horizontally supporting a support 20 on a concrete 10 girder or a composite girder 200 having a horizontal curvature, A horizontal supporting step of supporting the skeleton structure 210 of the girder, a prestressing step of applying a compressive force P1 in the circumferential direction at both ends in the longitudinal direction after the concrete member of the girder is formed to introduce a tensile force into the concrete, A load step of applying a horizontal load P2 to the girder in a direction opposite to the center of curvature in proportion to a horizontal component of the compressive force P1 or applying a horizontal direction preflex after the horizontal supporting step and removing the horizontal pre- , The non-uniform normal stress distribution in the section of the girder is canceled and the tensile stress To ensure that removal it is effectively characterized by enhanced load-carrying capacity and durability of the girder.