高等级公路沥青路面结构内部排水系统的设计研究

Study on Inner Drainage System Design of Top Grade Highways Bituminous Pavement

依据公路排水现状和排水设施布设情况的分析表明,高等级公路路面在使用一段时间后,不可避免地要出现各种病害,其中水是危害公路的主要自然因素。大多数路基沉陷、冲刷、坍塌、翻浆,沥青路面松散、剥落、龟裂,水泥混凝土路面唧泥、错台、断裂等病害,都不同程度地与地表水和地下水的侵蚀有关。水的作用加剧了路基和路面结构的损坏,加快了路面使用性能的恶化,缩短了它们的使用寿命。因此,道路排水是否通畅是影响路面使用性能和使用寿命的一个重要因素。

The analysis of current drainage condition and drainage facilities setting indicates that, various diseases inevitable emergence after use of pavement in a period of time, in which water is the major natural factors. Most of the roadbed subsidence, erosion, collapse, boil, asphalt pavement loose, peeling, cracked, cement concrete pavement, dislocation, fracture and other diseases are related to erosion of surface water and groundwater. The role of water exacerbates the subgrade and pavement damage, accelerates deterioration of pavement performance to shorten their life. So the unobstructed drainage is an important factor for the pavement performance and its service life.