城镇化地区公路工程排水设计体系研究

Study on Drainage Design System of Highway Engineering in Urbanization Area

为解决城镇化地区公路工程排水设计中遇到的造价普遍偏高且排水效果不理想难题,在前人研究基础上梳理归纳城镇化地区公路工程排水设计主要特点,根据不同路段城镇化水平、段落重要性定位、路侧设施远期规划使用周期、占地类型、河道沟渠距离等特点,制定城镇化地区公路工程排水设计思路及分区标准。依托西安市某城镇化一级公路工程,对该体系进行研究。首先根据各公路路段所在区域开发程度的不同确定不同的路基断面,对各断面进行对应的排水设计;然后,对主要排水设施设计进行分析。研究结果表明:城镇化地区公路在开发区、待开发区及未开发区进行的排水设计合理有效,既满足公路工程排水需求,又与城市远期规划相结合,能尽可能减少资源拆除浪费,兼顾公路与市政功能双重需求,解决传统城镇化地区公路排水设计难题。

In order to solve the problem that the cost is generally high but the drainage effect is not ideal in the drainage design of highway projects in urban areas,in this paper,the main characteristics of the drainage design of highway projects in urban areas is summarized on the basis of previous studies;the drainage design ideas and zoning standards for highway projects in urbanization areas is formulated according to the urbanization level of different sections,section importance positioning,long-term planning and use cycle of roadside facilities,land occupation type.the system is studied based on a first-class urbanization highway project in Xi'an.First of all,different subgrade sections are determined according to the different development degree of the region where each road section is located,and corresponding drainage design for each section is carried out.Then the design of main drainage facilities is analyzed.The research results show that it is reasonable and effective to carry out drainage design for roads in urban areas with the requirements of development zones,areas to be developed and undeveloped areas.It not only meets the drainage requirements of highway projects,but also combines with long-term urban planning to reduce the waste of resources demolition as much as possible,taking into account the dual needs of roads and municipal functions,and solving the problem of traditional road drainage design in urban areas.