摘要
老路中央分隔带开口位置及长度的合理设置是决定高速公路单侧加宽改扩建工程安全性的关键内容。为了分析驾驶员在高速公路单侧加宽改扩建中央分隔带开口影响区域路段行驶时的行为特性及工作负荷变化规律,通过人因工程试验设计,在郑洛高速公路3处中央分隔带开口影响区域出入路段,随机选取6名被试小客车驾驶员进行自然驾驶试验,分析了驾驶员的驾驶工作负荷度变化规律。结果表明,3处老路中央分隔带开口均可满足小客车驾驶员安全舒适的驾驶期望,并通过历史事故数据验证了中央分隔带开口路段的安全性,也进一步验证了我国首次应用单侧加宽改扩建老路中央分隔带开口技术的可靠性。
In order to study and evaluate the safety probability of the internal divider-opening section along the one-side broadening expanded expressway,the present paper has laid out and conducted a natural driving experiment based on the human factor controlling engineering project. For the said purpose,we have chosen 6 skilled regular passenger car drivers with normal driving skills as our testing subjects. And,next,we have decided and determined the safety degree of the one-sided broadening expanded expressway in comparison with the original version,which can be used as a key factor to our reasonable choice of the location and length of the opening section with a median strip. At the same time,we have also chosen a typical passenger car as the testing sample. The entire testing procedure has been arranged by using a KF-2 dynamic physiological detector to collect the high and low frequencies of the subjects＇ heart-beating rate changing variability and the eye-fixation point of the testing subjects through a i View X HED dynamic eyesight tracker,whereas the global position system can be used to collect the car running speed,time length and driving track. In so doing,under the regular weather condition,it is possible to test all the test subjects when they drive through the entrance of Xingyang cross-over station,the exit and the Shangjie cross-over entrance. which can also be the opening points of the original median strip of the said expressway. To finish the testing process in accordance with the driving program and the time checking of all equipment by taking Beijing time as the standard time zone,when the collected data were to be processed. Thus,we have analyzed the driving workload variation of the said 6 subject drivers when they drive through the entrance of Xingyang cross-road,the exit of the cross-road and the entrance of Shangjie cross. The results of our experiment indicate that the layout of the above-mentioned opening sections of the old median strip,with 120 km/h design speed,6. 25 m median strip width and 2 500 m length of the section can all satisfy the demands of the subject drivers＇ comfort and safety. The historical records of the accident data also prove the operation safety of the opening sections of the original median strip along the one-side broadening and reconstruction standpoints of the said expressway,with the reliability of the opening layout technology.
作者
胡江碧
刘佳美
杜战军
王荣华
HU Jiang-bi;LIU Jia-mei;DU Zhan-jun;WANG Rong-hua(College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China;Henan Provincial Communications Planning ＆ Design Institute Co.,Ltd.,Zhengzhou 450052,China)
出处
《安全与环境学报》
CAS
CSCD
北大核心
2018年第4期1278-1283,共6页
Journal of Safety and Environment
基金
河南省交通运输厅科技项目(20140204)
关键词
安全工程
单侧加宽改扩建
中央分隔带开口
驾驶工作负荷度
safety engineering
unilateral widening and extension
opening of central divide
driving workload degree
