摘要
视距是公路设计最基本的元素之一,是驾驶员遇到紧急情况时采取措施的安全保障,而横净距是保证行车视距的重要指标。对圆曲线内侧行车道和中央分隔带外侧超车道的横净距与曲线半径的对应关系进行分析,并介绍在杭长高速公路工程平面设计中的具体运用,供设计人员参考。
Sight distance,a fundamental element in highway design,is the safety guarantee for a dri-ver to take measures in case of emergency,and lateral clear distance is a major parameter ensuring the sight distance.The corresponding relationships between the curve radius and the lateral clear distances at the fast lane and the nearside lane outside of the median divider at a circular curve are analyzed.A case study on the plane design of Hang-Chang Expressway shows that this method provides the reference for designers.
出处
《公路》
北大核心
2011年第8期129-133,共5页
Highway
关键词
视距
横净距
中央分隔带
计算
平面设计
运用
sight distance
lateral clear distance
median separator
calculation
plane design
application
