摘要
为了研究隧道中曲线半径、路面摩擦系数、横净距及净高等不同设计参数对隧道行车视距的影响,将车辆运行速度、路面摩擦系数、驾驶人反应时间、隧道横净距及设计净高作为随机变量,以可靠度理论为基础,构建了隧道中平、竖曲线段的行车视距功能函数.通过改变隧道行车视距影响参数的设置,分析了隧道中行车视距的安全可靠性,并提出了隧道中行车视距的可靠性求解步骤.研究结果表明,隧道内行车视距失效概率随着曲线半径、路面摩擦系数、设计净高、隧道横净距的增加而减小,随着运行速度的增加而增大;设计净高、侧墙也对隧道内的行车视距产生影响.
In order to analyze the impacts of different design parameters such as curve radius, pave-ment friction coefficient, lateral clear distance and clear height on tunnel sight distance, vehicle run-ning speed, pavement friction coefficient, driver reaction time, lateral clear distance and design clear height are considered as random variables.Performance functions of sight distance on horizontal and vertical curves are proposed based on the reliability theory.The safety reliability of tunnel sight dis-tance is analyzed by changing the parameters that affect the tunnel sight distance, and steps to solve the safety reliability of tunnel sight distance are proposed.Analysis results indicate that with the in-crease of curve radius, pavement friction coefficient, design clear height and lateral clear distance, the failure probability of tunnel sight distance reduces.However, the failure probability of sight dis-tance in tunnel increases with the increase of vehicle running speed.In addition, design clear height and sidewall also have impacts on tunnel sight distance.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第4期859-863,共5页
Journal of Southeast University：Natural Science Edition
基金
国家自然科学基金重点资助项目(U1134206)
国家自然科学基金外国青年学者研究基金资助项目(51250110075)
国家道路安全科技行动计划资助项目(2009BAG13A02)
关键词
道路工程
行车视距
可靠度
曲线半径
净高
road engineering
sight distance
reliability
curve radius
clear height
