接入道路对山区双车道公路穿村镇路段事故风险影响  

Influence of access roads on accident risks of mountainous two-lane highway passing through villages and towns segments

作　　者：戢晓峰[1] 耿昭师 普永明 卢梦媛 覃文文[1] JI Xiaofeng;GENG Zhaoshi;PU Yongming;LU Mengyuan;QIN Wenwen(Faculty of Transportation Engineering,Kunming University of Science and Technology,Kunming Yunnan 650504,China)

机构地区：[1]昆明理工大学交通工程学院,云南昆明650504

出　　处：《中国安全科学学报》2022年第5期155-162,共8页China Safety Science Journal

基　　金：国家自然科学基金资助(52062024)。

摘　　要：为降低山区双车道公路穿村镇路段交通事故风险,基于道路线形、村镇环境、交通事故数据,构建结构方程模型(SEM)及N-K模型,探究接入道路与环境、车辆及道路线形对山区双车道公路穿村镇路段事故风险的耦合影响,并定量分析道路-村镇距离、接入道路类型和数量、交叉口类型对山区双车道公路穿村镇路段事故风险的影响及耦合作用。结果表明:接入道路对山区双车道公路穿村镇路段事故风险具有显著影响,并且与平曲线因素、竖曲线因素具有较强的耦合作用;道路-村镇距离和交叉口类型有直接显著作用,接入道路数量和类型仅有间接显著作用;道路绕行村镇大于100 m与机耕道耦合风险最大,风险耦合度为0.3596;机耕道与3条接入道路耦合风险最小,风险耦合度为0.0001。In order to reduce traffic accident risks of mountainous two-lane highways passing through villages and towns segments,SEM and N-K model were constructed based on road alignment,village and town environment as well as traffic accident data.Then,coupling effects of access roads and environment,vehicle and road alignment on traffic accident scale of such mountainous highways were explored,and influence of road-village distance,access road type and quantity,and intersection type on the accident risk and their coupling effects were quantitatively analyzed.The results show that access roads have significant impacts on the accident risk of the above-mentioned highways,and it has a strong coupling effect with horizontal curve factors and vertical curve ones.Road-village distance and intersection type have direct significant effect,while number and type of access roads have only indirect significant effect.The coupling risk of roads detouring villages for more than 100 meters and mechanical tillage road is maximum,with risk coupling degree at 0.3596,while that of machine tillage road and three access roads is minimal,with coupling degree at 0.0001.

关 键 词：接入道路 山区双车道公路 穿村镇路段 事故风险 结构方程模型(SEM) 

分 类 号：X928.03[环境科学与工程—安全科学]