《内河通航标准》中相邻桥梁间距规定要求的探讨

Discussion on requirements for spacing between adjacent bridges in Navigation Standard of Inland Waterway

近年来,桥梁选址与《内河通航标准》5.1.2条关于相邻水上过河建筑物轴线间距要求的矛盾日益凸显。针对该问题,以襄阳—荆门高速铁路宜城汉江大桥为例,在分析桥位河段河道变化、航道维护、水流条件、船舶通航密度等建设条件的基础上,开展了船舶通航仿真模拟试验。结果表明:在满足船舶航行和桥梁安全前提下,可根据桥址河段建设条件和通航孔布置情况适当调整相邻桥梁间距要求。论证了《内河通航标准》中相邻水上过河建筑物轴线间距规定要求存在的局限性,提出了对其修订的建议。

In recent years, the contradiction between bridge site selection and the requirements for the axial spacing between adjacent over-river structures in Clause 5.1.2 of the Navigation Standard of Inland Waterway has become increasingly prominent. In response to this problem, the study takes the Yicheng Hanjiang River Bridge of the Xiangyang-Jingmen high-speed railway as an example to analyze the construction conditions such as the change in the river channel, waterway maintenance, flow conditions, and density of water transport in the river section of the bridge. On this basis, a simulation experiment of ship navigation is carried out. The results reveal that on the premise of ensuring the safety of ship navigation and bridges, we can appropriately adjust the requirements for the spacing between adjacent bridges according to the construction conditions in the river section of the bridge and the layout of the navigable span. This paper demonstrates the limitations of the requirements for the axial spacing between adjacent over-river structures in the Navigation Standard of Inland Waterway and puts forward suggestions for its revision.