高速公路超宽超高路段快速排水设计与加强措施

Fast drainage and strengthening measures for super wide and high sections of Expressway

双向四车道改为六车道及八车道以上高速公路在超高及过渡路段存在向内横坡甚至零度横坡,此时车道雨水需要反向流入中间隔离带,加上路面宽水流时间变长变慢,因此极易在内侧道路造成积水。分析了超宽超高路段雨水径流特性,介绍了超高路段雨水排放系统的常见设计方法并给出了具体设计参数,同时,针对暴雨期间路面散水提出了透水型截水沟、连续减速震荡带以及彩色防滑路面等加强性的改善措施。

There is an inward or even zero cross slope in the superhigh and transition section when the two-way four lane is changed to six or over eight Lane expressway.At this time,the rainwater in the lane needs to flow in the middle isolation belt in reverse direction.In addition,the rain flow time of the road becomes longer and slower,so it is easy to cause water accumulation on the inner lane.This paper analyzes the characteristics of rainwater runoff in super wide and high road sections,introduces the common design methods of rainwater drainage system,and gives the specific design parameters.At the same time,in view of the scattered water on the road surface,it puts forward the strengthening improvement measures such as permeable intercepting ditch,continuous speed bumps and color anti-skid pavement.