Cable Crane System Design of Three-tower Self-anchored Suspension Bridge with Main Span of 2 × 428 m
Jinan Fenghuang Yellow River Bridge is a three-tower self-anchored suspension bridge with the largest span in the world up to date.In the paper,the design of the main cable is introduced,and the selection of main cable steel wire for long-span suspension bridge in recent years is listed.It can be seen that it is a trend to use high-strength and large-diameter steel wire for main cable.By introducing the design of main cable saddle,two design methods of main cable saddle with spatial cable surface are given.The design of the central buckle of the bridge realizes the coordinated stress of three pairs of central buckles by adjusting the longitudinal stiffness of multiple pairs of series rigid central buckles.
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