Research of L-shaped Ribbed Bridge Deck Element-Upper Partition Assembled Manufacturing Process
The south navigation bridge of Zhangjinggao Yangtze River Bridge is a double-pylon double-span(2 300 m+717 m)steel box girder suspension bridge.Its north navigation bridge is a double-pylon single-span(1 208 m)steel box girder suspension bridge.The steel box girder bridge deck element is pre-constructed with orthogonal steel deck slab with longitudinal L-ribs and apple-shaped holes.In order to meet the assembly clearance requirements between the upper partition groove and L-shaped stiffening rib,a manufacturing process for assembling the longitudinal L-rib plate element of the steel box girder bridge deck and the upper partition of the apple-shaped hole groove is proposed,which provides the reference for the assembly of similar plate units and partitions.