交通信息与安全2024，Vol.42Issue(6)：64-73,10.DOI:10.3963/j.jssn.1674-4861.2024.06.007
超高速公路合流区加速车道长度可靠性研究
Reliability of Acceleration Lane Length in Confluence Area of Superhighway
摘要
Abstract
To overcome the shortcomings of the current specifications that use deterministic model to design the ac-celeration lane length,considering different ramp design speeds,the reasonable length of acceleration lane is investi-gated to meet the requirements of traffic safety and efficiency.The functional function of the acceleration lane length is established by using the length calculation model based on vehicle merging theory and introducing the reliability theory.Statistical inference is conducted on related parameters such as the minimum merging speed in the functional function.Random variables are generated and substituted into the Monte Carlo method for solving,to estimate the re-liable probability of the acceleration lane length under different mainline and ramp design speeds.Combined with the standard for reliability design standard of structure and the reliability probability greater than 95%,the recommended values of the superhighway acceleration lane length corresponding to the main line design speed of 140 km/h and the ramp design speed of 30,40,50,60 km/h are obtained.The rationality of the recommended value is verified by Simu-lation of Urban Mobility(SUMO),and the results show that the reliability probability of the acceleration lane increas-es as the acceleration lane length increases,and tends to be stable after reaching a certain value.The acceleration lane length is affected by the mainline design speed and the ramp design speed,and is negatively correlated with the ramp design speed under a given service level and target reliability index.Compared with the deterministic model,the de-sign of acceleration lane length through reliability theory and traffic simulation model is more flexible and reliable.关键词
道路工程/加速车道/长度计算模型/可靠度理论/SUMO仿真/超高速公路Key words
road engineering/acceleration lane/length calculation model/reliability method/Simulation of Urban Mobility(SUMO)/superhighway分类
交通工程引用本文复制引用
何永明,王繁,吴佳璇,邢婉钰..超高速公路合流区加速车道长度可靠性研究[J].交通信息与安全,2024,42(6):64-73,10.基金项目
黑龙江省自然科学基金项目(LH2023E011)、东北林业大学碳中和专项科学基金项目(HFW221600015)资助 （LH2023E011）
