沪通铁路长江大桥工程河段航道条件及桥墩布置方案

沪通铁路长江大桥选址在澄通河段中段南通水道进口处,该航段为Ⅰ级航道,此河段由于横港沙及通州沙等影响,河道变化复杂,深泓易摆动,并且桥区河段深水航道稳定对沿江经济发展至关重要,因此桥墩布置方案必须结合深水航道上延需求,充分考虑航道条件变化及通航要求。在充分考虑水文、河床演变、航道条件、航运等因素的基础上,合理布置桥墩方案,以最大限度满足通航要求。

Shanghai-Nantong railway bridge channel condition and bridge pier arrangement

Shanghai-Nantong railway bridge locates at the middle of Chengtong river, a class I chanhnel.The deepwater channel plays an important role to the economy along the stream and the river regime varies due to the influence of Henggang sandbar and Tongzhou sandbar. Thus, the consideration of a variety of channel conditions and shipping transportation for the bridge pier allocation is compulsory. The maximum satisfaction for river transportation could be reached by optimizing bridge pier allocation based on considerations of hydrology,fluvial process, channel condition, shipping transportation, etc.