| 摘要 |
PURPOSE: A construction method of a composite rahmen bridge using a preflex girder is provided to safely, simply and cost-efficiently construct a composite rahmen bridge. CONSTITUTION: A construction method of a composite rahmen bridge using a preflex girder is as follows. A vertical stiffener is attached to a web plate of a steel girder to prevent the steel girder from buckling. A PC steel wire(30) of lower casing concrete(20) is tensioned twice. The lower casing concrete is cured on the lower flange of the steel girder, and fixed end support devices(60) and roller end support devices(65) are installed thereon to place a composite girder(10) thereon. |
