轨道交通跨越通航河道线路方案比选研究

Comparison and Selection of Rail Transit Routes Across Navigable Rivers

随着轨道交通建设的发展,轨道线路作为城市骨干交通形式经常需要跨越大的通航河道,而通航河道须满足通航、防洪要求,对河道上构筑物的要求较高。同时,城市内合适的跨河通道有限,存在公路和轨道交通过河通道位置冲突的情况。综上,设计人员在设计工作中需要结合线路跨河的走向,合理确定跨河通道的位置及跨河方式,同时从吸引客流、工程实施、环保需求、经济效益等多个方面对方案进行综合比选研究,选择合适的方案。以广东省佛山市顺德区13号线为例,说明跨河线路方案受跨河方式及桥位、桥梁结构影响较大,桥位相邻线位在兼顾选线原则基础上,应服从桥位的选择,同时结合区域规划、客流、沿线建筑、道路、景观、环保等方面综合考虑分析确定。

With the development of rail transit construction,rail lines,as the urban backbone transportation form,need to cross large navigable river courses.Due to the navigable river courses’requirements for navigation and flood control,they have high requirements for structures on the river courses.At the same time,there are conflicts between highway and rail transit in crossing the river due to the limited suitable river-crossing channels in the city.It is necessary to reasonably determine the location of the cross-river channel and the way of crossing the river in combination with the trend of the route crossing the navigable river.At the same time,the schemes should be compared and selected from the aspects of attracting passenger flow,project implementation,environmental protection needs and economic benefits,so as to select the appropriate schemes.Taking Foshan Line 13 as an example,it can be seen that the scheme of river crossing route is greatly influenced by the way of river crossing,bridge position and bridge structure.On the basis of considering the line selection principle,the adjacent bridge position should be subject to the choice of bridge position.Meanwhile,it should be analyzed and determined in combination with regional planning,passenger flow,buildings along the route,roads,landscape,environmental protection and other aspects.