路基排水设计新理念在大广高速中的应用

路基排水是高速公路排水系统的重要组成部分,对路基稳定性及路面使用寿命有显著影响.鉴于此,以大广高速公路衡大段为依托,在路基排水设计中引入“生态、环保、长寿命”的平原地区高速公路路基排水设计新理念,并将其在大广高速中边沟、急流槽、中央分隔带、超高段及通道等排水设计中的应用加以介绍,可为类似工程项目提供参考与借鉴.

Application of New Idea on Subgrade Drainage Design in Daqing-Guangzhou Expressway

As an important part of expressway drainage system, subgrade drainage affects the stability of subgrade and pavement service life a lot. Based on the engineering project of Hengshui to Daming section of Daqing to Guangzhou expressway, the design principle, which includes ecology, environmental protec- tion, long-life, for expressway subgrade drainage design in plain area is introduced. In addition, the paper introduces the application of this new idea in drainage design of side ditch, chute, median divider, superelevation section and passageway of Daqing to Guangzhou expressway. It can provide reference for similar engineering projects.