This article takes the main bridge of Nandujiang Bridge as the background,which details the design concept,overall layout,structural design and calculation of the ultra-wide central arch rib tied bridge solution.The bridge span is arranged to a single span 150 m.In the design,the arch ribs use the central arch rib,and the one-fourth span is divided into two arches.The two arches are connected in the middle of the double arches.Beam,arched ribs,booms,and main beams(tie rods)together form a structural system,jointly bear the load,and construct a"half moon in the air"in the landscape shape.The meaning is far-reaching.
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