基于驾驶模拟实验的高原山区公路安全性评价  

Safety Evaluation of Highways in Plateau Mountain Areas Based on Driving Simulation Experiments

作　　者：孙璐 王奇 何云勇 何恩怀 杨昌凤 高建平[2] SUN Lu;WANG Qi;HE Yunyong;HE Enhuai;YANG Changfeng;GAO Jianping(Sichuan Highway Planning,Survey,Design and Research Institute Ltd.,Chengdu,Sichuan Province,610041 China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing,400074 China)

机构地区：[1]四川省公路规划勘察设计研究院有限公司,四川成都610041 [2]重庆交通大学土木工程学院,重庆400074

出　　处：《科技资讯》2023年第14期142-149,共8页Science & Technology Information

基　　金：四川省交通运输科技项目(项目编号:2021-A-03、2022-A-01)。

摘　　要：以四川西部高原山区公路为研究对象,利用UC-win/Road软件进行建模,开展了螺旋展线与桥隧相接路段的驾驶模拟实验,选取驾驶员瞳孔直径变化率和眼动扫视特征作为安全性评价指标,以客观反映研究路段安全运营状况。结果表明:驾驶员在隧道出入口明暗适应路段瞳孔直径呈现高频率波动,瞳孔直径变化率0.3为桥隧相连实验路段瞳孔直径变化率的风险阈值;短时扫视频率每秒3次为异常点判别的临界值,桥梁路段异常点与实验路段直坡路段相比,小半径弯坡路段的线形指标与行车环境更容易对驾驶员的扫视行为造成影响。在此基础上,提出了特大桥梁和隧道路段的交通安全设施改进建议,研究结果可供类似地区公路工程建设参考。Taking the highway in the western plateau mountainous area of Sichuan Province as an example,the UC-win/Road softerware was used to model,and the driving simulation experiment was carried out on the road section where the helix line development connected with the bridge and tunnel.Driver's pupil diameter change rate and eye movement saccade characteristics were selected as safety evaluation indicators to objectively reflect the safe operation of experimental road section.The results show that the pupil diameter of drivers in the light dark adaptation section at the tunnel entrance or exit fluctuates with high frequency,and the pupil diameter change rate of 0.3 is the risk threshold in experimental section which connected with bridge and tunnel.The short-term scanning rate of 3 times/s is taken as the critical value to identifying outliers.The abnormal points of the bridge section show that,compared with the straight slope section,the linear indicators and driving environment of the small radius curved slope section are more likely to affect the driver's scanning behavior.Based on the results,improvements about traffic safety facilities for extra large bridges and tunnels are recommended,and provide references for highway constructions in similar areas.

关 键 词：道路工程 山区公路 螺旋展线 桥隧相连 驾驶模拟 安全性评价 

分 类 号：U446[建筑科学—桥梁与隧道工程]