刚架拱桥的新型设计

A New Design for Rigid-Framed Arch Bridge

对轻型刚架拱桥定型图的原肋拱改造为板肋拱,并适当增加配筋,不仅可以提高结构强度,也可同时提高结构刚度,结合龙川东江大桥的改造工程,介绍刚架拱桥的改进设计和施工要点。

The original rib arch is changed to a slab rib arch in the typical drawing for lightweight rigid-framed arch bridges, and reinforcements are properly added. That the structure strength is increased and structure rigid increased too in the same time. On the basis of rebuilding engineering of Longcuan Bridge over Dongjiang River, a improved design and construction key points of rigid-framed arch bridges are introduced in this paper.