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0.前言在我国现代高速公路建设中,水是造成公路路基破坏的主要因素之一。在常见的高速公路设计中,道路排水能力往往不能满足路基排水要求或中间分隔带排水不畅,致使边沟积水,甚至导致边坡开裂、滑塌,由于路基长时间受水浸泡,其强度和整体稳定性会随着时间的延长而降低,最终发展至路基沉陷、路面开裂,以至于道路的使用寿命大大缩短。设计单位在做路基、路面排水设计时,必须考虑当地的地形、气候、水文、地下水情况,通过设置纵向排水沟、边沟、横向排水沟、跌水、急流槽、截水沟等排水设施,纵向、横向分段形成
0. Preface In the construction of modern expressway in our country, water is one of the main factors that cause the destruction of highway subgrade. In the common highway design, the capacity of road drainage often can not meet the requirements of subgrade drainage or poor drainage in the middle of separation, resulting in ditches of water, and even lead to slope cracking, slumping, subgrade immersion for a long time due to its strength And the overall stability will be reduced over time, eventually developing to roadbed subsidence, pavement cracking, so that the life of the road greatly reduced. Design units in the roadbed, pavement drainage design, we must consider the local topography, climate, hydrology, groundwater conditions, through the establishment of vertical drains, ditches, horizontal drains, falls, rapids, interception ditch and other drainage facilities, Longitudinal, horizontal segmentation