摘要
为分析高速公路多心卵形曲线路段的行车风险,依托西部地区5条高速公路的交通事故数据资料,选取平面设计指标和车速作为行车风险分析的主要影响因素,利用UC-win/Road软件进行驾驶仿真试验;以车辆横向轨迹偏移值期望作为评价指标,基于数理统计理论分析各因素的显著性;最后运用MATLAB软件,建立多心卵形曲线路段行车风险评价模型。研究结果表明:圆曲线半径组合方式、车速、中间圆曲线半径、回旋线参数与半径比值和相邻圆曲线半径比值的影响显著性逐渐降低;当车辆横向偏移值期望大于205 mm时,可认为该多心卵形曲线路段处于危险状态。
In order to analyze the traffic risk of the polycentric oval curve section of the expressway,relying on the traffic accident data of 5 expressways in the western region,the graphic design index and vehicle speed are selected as the main influencing factors of the driving risk analysis,and the UC-win/Road software is used to carry out the analysis.In the driving simulation test,the vehicle lateral trajectory offset value expectation is used as the evaluation index,and the significance of each factor is analyzed based on the mathematical statistics theory.Finally,MATLAB software is used to establish a driving risk evaluation model of multi-core oval curve road section.The results show that the influence of the combination of radius of circle curve,speed,radius of second circle curve,ratio of cyclotron parameter to radius and radius of adjacent circle curve decreases gradually;and the multi-centered oval curve section can be considered dangerous when the expectation of vehicle lateral offset is greater than 205 mm.
作者
张驰
李永春
吴斌
李枭
ZHANG Chi;LI Yong-chun;WU Bin;LI Xiao(School of Highway,Chang’an University,Xi'an 710064,China;Sichuan Yakang Expressway Co.Ltd.,Ya'an 625000,China;Sichuan Highway Planning,Survey,Design and Research Institute Ltd.,Chengdu 610041,China)
出处
《公路》
北大核心
2022年第3期1-10,共10页
Highway
基金
国家重点研发计划项目,项目编号2020YFC1512005
四川省交通运输科技项目,项目编号2019-ZL-12。
