摘要
公路路线设计质量直接影响了行车安全性和舒适性。鉴于此,首先分析了地形、地质条件、环保、工程造价等因素对路线设计方案的影响;随后,基于现行设计规范,探讨了直线长度、圆曲线半径、缓和曲线参数、纵坡、坡长、竖曲线半径等参数的选择方法,并总结了平纵线形组合的具体原则;最后,以某山区高速公路为研究对象,利用运行速度和设计速度差值ΔV、相邻路段运行速度变化率C对路线线形的协调性和连续性进行评价,研究成果可供类似公路路线设计提供科学指导。
The quality of highway route design directly affects driving safety and comfort.In view of this,the impact of factors such as terrain,geological conditions,environmental protection,and engineering costs on the route design scheme was first analyzed;Subsequently,based on current design standards,the selection methods of parameters such as straight line length,circular curve radius,transition curve parameters,longitudinal slope,slope length,and vertical curve radius were explored,and the specific principles for combining horizontal and vertical lines were summarized;Finally,taking a mountainous expressway as the research object,the difference between operating speed and design speed was utilizedΔV.The change rate of operating speed C on adjacent road sections evaluates the coordination and continuity of the route alignment,and the research results can provide scientific guidance for the design of similar highway routes.
作者
张武堂
Zhang Wutang(CCCC First Highway Consultants Co.,Ltd,Xi’an,Shaanxi 710075)
出处
《现代工程科技》
2023年第17期91-94,共4页
Modern Engineering Technology
关键词
路线设计
影响因素
平纵指标
平纵组合
线形评价
route design
influencing factors
horizontal and vertical indicators
horizontal and vertical combination
linear evaluation
