基于路堤形式衔接道路路面排水影响研究

Research on the influence of road surface drainage based on embankment form connection

为研究高速公路与城市主干路衔接所采用的排水方式,基于长春市当地暴雨强度公式及不同降雨重现期确定出雨水模型,运用OpenRoads Designer软件仿真模拟验证此排水方式的水流速符合要求。分析表明:在不同降雨重现期下,单一横坡浅三角边沟坡度、宽度与水流速存在着非线性回归关系,并可得出相应的非线性方程。由方程可知,浅三角边沟宽度在3年降雨重现期时宽度≤1.2 m、坡度≥3.2%;5年时宽度≤2.0 m、坡度≥1.9%,水流速达到0.4 m/s的规范要求,以期研究成果为衔接道路相关研究提供参考。

In order to study the drainage method used for the connection of expressway and urban trunk road,the rainwater model was determined based on the local rainstorm intensity formula and different rainfall return periods in Changchun,and the OpenRoads Designer software was used to simulate and verify that the flow speed of this drainage method met the requirements.Analysis shows that there is a nonlinear regression relationship between the slope,width,and water flow velocity of a single cross slope shallow triangular ditch under different rainfall return periods,and corresponding nonlinear equations can be obtained.According to the equation,the width of the shallow triangular side ditch is≤1.2 and the slope is≥3.2%during the 3 years rainfall return period;at 5 years,the width is≤2.0 m,the slope is≥1.9%,and the water flow speed meets the standard requirement of 0.4 m/s.The research results are expected to provide reference for research related to connecting roads.