南京长江大桥第5孔开通上行通道可行性研究

目前南京长江大桥上行通航孔通过能力不足,充分利用大桥通航桥孔、增加开通上行通航孔,对于改善桥区航段通航环境、保障大桥及船舶通航安全是十分必要的。根据南京长江大桥所处航段的航道自然条件,通过分析不同年份河床演变及水流条件,提出大桥第5孔开通上行通道的可行性及开通方案。结果表明,南京长江大桥第5孔与现通航孔跨度相同,大桥河段水深槽宽,具备开通为通航孔的基础条件。建议近期只开通第5孔为大型船舶上行通航孔,未来可根据船舶通航情况适时调整。

Feasibility of upstream channel opening of the fifth navigable bridge in Nanjing Yangtze River bridge

In view of the lack of navigation capacity of the upstream channel opening of Nanjing Yangtze River Bridge,it is necessary to improve the navigation environment and guarantee the safe operation of the bridge and ship by making full use of the bridge navigable bridge opening and increasing the navigable upstream opening hole.According to the natural channel conditions of the Nanjing Yangtze River Bridge section,and based on the bed evolution and flow conditions in different years,we propose the scheme and probe into the feasibility of opening the bridge upstream channel at the 5th opening hole.The results show that the 5th hole of the Nanjing Yangtze River Bridge has the same span as the current navigable hole,and the bridge section is characterized by the deep and wide channel,so it bears the basic condition for opening the navigable hole.It is suggested to just open the 5th hole as the upstream navigable hole,and in the future it can be adjusted according to the vessel traffic situation.