山区高速公路路基设计

Roadbed design for expressways in mountainous areas

由于山区高速公路地形、地貌、地质、水文条件的复杂性,其路基工程的设计较为复杂且难度较大。以松建高速公路建设为例,对山区高速公路路基设计方案和全过程动态设计理念进行介绍。本项目在工程设计阶段重视现场地形、地质等资料的收集,结合以往的工程经验,有针对性地开展精心细致的设计;在施工过程中,及时根据现场实际情况的变化,对原设计方案进行合理调整,为工程施工的顺利进行创造条件,同时进一步提升了设计成果的质量。实践表明,本项目的设计方案和设计理念具有明显的优越性,对今后类似工程的设计具有参考意义。

Due to the complexity of terrains,morphological,geological and hydrological conditions of expressways in mountainous areas,the design of expressway roadbed is extremely complex and difficult.Taking Songxi-Jianyang expressway built in northern Fujian mountainous area as an exam-ple,roadbed design schemes of the expressways in mountainous areas and dynamic design concept in the whole process of engineering construction were described.The site topology and geological infor-mation of Songxi-Jianyang expressway were collected in the engineering design process to conduct detailed and scientific roadbed design combined with the past experiences.The original design scheme was adjusted in a rational manner in accordance with the changes of the actual conditions, which created favourable conditions for the smooth construction and uplifted the design quality.The results indicate that the design scheme and the design concept of the expressway roadbed is advanta-geous and is further applicable.