基于平纵组合的山区高速公路连续下坡路段行车安全评价方法  

Driving Safety Evaluation Method for Continuous Downhill Section of Mountainous Expressway Based on Longitudinal-Transverse Combination

作　　者：张驰[1,2] 王茜茹[1] 向宇杰 高艳阳 冉光炯 ZHANG Chi;WANG Xiru;XIANG Yujie;GAO Yanyang;RAN Guangjiong(College of Highway,Chang’an University,Xi’an 710064,Shaanxi,China;MOE Engineering Research Center of Digital Road Infrastructure,Xi’an 710064,Shaanxi,China;Jiujiang Municipal Transportation Bureau,Jiujiang 332018,Jiangxi,China;Sichuan Smart Highway Science and Technology Co.,Ltd.,Chengdu 610094,Sichuan,China)

机构地区：[1]长安大学公路学院,陕西西安710064 [2]道路基础设施数字化教育部工程研究中心,陕西西安710064 [3]九江市交通运输局,江西九江332018 [4]四川智慧高速公路科技有限公司,四川成都610094

出　　处：《重庆交通大学学报（自然科学版）》2024年第5期78-90,共13页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：陕西省自然科学基础研究计划项目(2023-JC-YB-391,2021JQ-239);国家重点研发计划资助项目(2020YFC1512005);四川省科技计划资助项目(2022YFG0048);四川省交通运输科技项目(2022-ZL-04)。

摘　　要：受制于地理和经济条件,山区高速公路在建设中不可避免会存在连续下坡路段,其中平纵组合路段对车辆稳定性和安全性提出了更高的要求。为分析山区高速公路连续下坡平纵组合路段的行车安全,利用西南山区高速公路数据,以80 km/h的设计速度,在连续下坡路段的不同位置、不同平纵组合工况构建了驾驶仿真实验。根据驾驶者的心理数据、车辆速度变化数据和横向偏移数据推出综合评价指标;将综合评价指标与平曲线半径和纵坡进行相关性分析;再通过累计频率图划分评价阈值;提出了基于平纵组合的连续下坡路段行车安全评价方法,并依托评价方法提出了连续下坡路段坡顶、坡中和坡底位置的平纵组合设计建议值;并以西南山区某高速公路为例对该评价方法进行了应用与验证。研究结果表明:该方法能为高速公路连续下坡路段的行车安全评价提供有效的参考依据。Subjected to geographical and economic constraints,the construction of mountainous expressways inevitably involves continuous downhill sections,among which the longitudinal-transverse combination section places higher demands on vehicle stability and safety.In order to analyze the driving safety in continuous downhill sections of mountainous expressways,a driving simulation experiment was constructed at a design speed of 80km/h at different positions and under different longitudinal-transverse combination conditions in a continuous downhill section by utilizing the data from a southwestern mountainous expressway.The comprehensive evaluation index was derived according to psychological data of drivers,vehicle speed variation data and lateral deviation data.Subsequently,a correlation analysis between the comprehensive evaluation index and the horizontal curve radius and longitudinal slope was carried out.Then,the threshold value was divided and evaluated through the cumulative frequency graph.A driving safety evaluation method for continuous downhill sections based on longitudinal-transverse combinations was proposed,and based on the proposed evaluation method,the recommended values for the longitudinal-transverse combinations design at the crest,middle,and bottom of slope of the continuous downhill section were proposed.Finally,the proposed evaluation method was applied and validated by taking a certain expressway in the southwestern mountainous region as an example.The research results indicate that the proposed method can serve as an effective reference for evaluating the driving safety of continuous downhill sections of expressways.

关 键 词：道路工程 高速公路连续下坡 平纵组合 行车安全 评价方法 

分 类 号：U412.3[交通运输工程—道路与铁道工程]