山区高速公路路线选线探索与实践

Exploration and Practice of Expressway Route Selection in Mountain Areas

路线设计是山区高速公路勘察设计的基础和灵魂,直接决定了项目的造价、运营成本等。山区高速公路的路线设计有其自身的特点,路线控制点多,可比选方案多,灵活运用平、纵技术指标,合理选择最优方案至关重要。文章以荔浦至玉林高速公路起点K3+500～K9+100段路线设计为例,阐述了山区高速公路路线设计的要点,并从线路技术指标、经济指标、运营效益、施工条件的难易程度、使用效率、在交通网中的作用等方面,对该路段不同的选线方案进行了对比分析,确定出最合适的线路设计方案,为类似山区高速公路选线提供参考。

The route design is the foundation and soul of expressway survey and design in mountain areas,which directly determines the project＇s cost and operating costs.The expressway route design in mountain areas has its own characteristics,There are many route control points and many comparable alternatives,thus the flexible use of horizontal and vertical technical indicators and the rational selection of optimal plans are of utmost importance.With the route design of KI＋ 500- K9＋ 100 at the starting point of Lipu-Yulin Expressway as an example,this article described the main points of expressway route design in mountain area,conducted the comparative analysis of different route selection schemes for this section from the aspects of technical indicators, economic indicators, operational benefits, and construction condition difficulties, use efficiency, and role in the transportation network of different routes,and determined the most appropriate route design plan, thereby providing the reference for similar expressway route selection in mountain areas.