基于路面排水需求的超高过渡段临界纵坡量化研究  

Quantitative Research on Critical Longitudinal Slope of Ultra-High Transition Section Based on Pavement Drainage Demand

作　　者：王大为 尹万辉 WANG Dawei;YIN Wanhui(Wenzhou Traffic Planning and Design Institute,Wenzhou 325000,China)

机构地区：[1]温州市交通规划设计研究院有限公司,浙江温州325000

出　　处：《国防交通工程与技术》2022年第6期26-29,共4页Traffic Engineering and Technology for National Defence

摘　　要：路线平纵横组合不当,导致排水盲区存在,往往是造成公路路面排水不畅的根本原因,以超高过渡段存在频率尤多。将超高过渡段划分成两区三线,对两区横断面坡度变化进行分析,对三线考虑附加纵坡叠合效果,而后利用合成纵坡将二者结合,得出超高过渡段不同区域的临界纵坡要求。The improper combination of transverse,vertical and horizontal routes leads to the existence of blind drainage areas.Poor drainage of highway pavements is often the root cause,especially in ultra-high transition sections.This paper divides the ultra-high transition section into two areas and three lines and analyzes the changes of the transverse section slope in the two areas,considers the superimposition effect of the additional longitudinal slope for the three lines,and then uses the synthetic longitudinal slope to combine the two to obtain the critical longitudinal slope requirements of the different areas of the ultra-high transition section.

关 键 词：路面排水 超高过渡段 两区三线 纵坡叠合 临界纵坡 

分 类 号：U412.33[交通运输工程—道路与铁道工程]