芜合高速公路路堤水毁段排水系统优化设计

Optimization Design of Drainage System in the Embankment Damaged Section of Wuhu Expressway

公路水毁是较为普遍且严重的病害形式,会降低道路正常使用寿命且存在安全隐患。文章以芜合高速公路路堤水毁段为研究对象,通过现场调查查明研究区路段排水系统失效,多处路段出现严重病害,包括路基脱空、路面严重翻浆、沉陷,路面排水系统失效,土质排水沟淤积严重等。依据实地调查和当地工程地质条件分析得到研究路段路基、路面水毁的主要形成原因为现存排水设施本身的不完善、排水系统在使用过程中的损坏等。并据此提出有针对性的排水系统优化设计原则,优化排水系统包括路堤排水沟、路堑边沟、分离带排水三方面的优化设计,以及排水引流的地表水调查现状和具体工程实施,研究方案可为高速公路排水优化设计提供参考。

Road water damage is a more common and serious form of disease,which will reduce the normal service life of the road and have safety hazards.Taking the water damaged section of the embankment of Wuhe Expressway as the research object,the article identified the failure of the drainage system of the road section in the research area through on-site investigation,and the serious diseases in many road sections,including the emptying of the subgrade,the serious slurring and subsidence of the road surface,the failure of the road drainage system,and the serious siltation of the soil drainage ditch.According to the field investigation and the analysis of local engineering geological conditions,the main causes of water damage to the road subgrade and pavement of the road section are the imperfection of the existing drainage facilities themselves and the damage of the drainage system during use.Based on this,the optimization design principle of targeted drainage system is proposed,and the optimization design of the optimized drainage system includes the three aspects of embankment drainage ditch,road graben side ditch and separation belt drainage,as well as the current situation of surface water survey and specific project implementation of drainage and drainage,and the research scheme can provide reference for the optimization design of highway drainage.