| 摘要 |
A construction method of a rahmen structure to be introduced with a pre-moment and an anchorage device used for the same are provided to support much larger load with a steel girder having the same cross section, to plan a long-span girder and to reduce the cost of materials for a steel girder. A construction method of a rahmen structure comprises the steps of putting steel girders on a worktable in two or more rows(S110), installing one or more cross beams between the steel girders to support horizontally(S120), applying bending moment to the steel girders to bend the steel girders to be convex downward(S140), lifting up a group of the steel girders equipped with the cross beams while the bending moment is applied at once and joining a column and at least one end to transfer a moment(S150), and removing the applied bending moment(S160). |
