车-路-环境作用下山区桥隧连接段行车安全分析  

Traffic Safety in Mountainous Bridge and Tunnel Connection Sections under the Action of Vehicle-Road-Environment

作　　者：王露[1] 霍露露 张子宇 陈红[1] WANG Lu;HUO Lulu;ZHANG Ziyu;CHEN Hong(School of Transportation Engineering,Chang an University,Xi'an 710064,Shaanxi,China)

机构地区：[1]长安大学运输工程学院,陕西西安710064

出　　处：《重庆交通大学学报(自然科学版)》2025年第2期82-90,共9页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家重点研发项目(2020YFC1512000);国家自然科学基金项目(52178409)。

摘　　要：针对山区高速公路桥隧连接段在强侧风作用下的行车安全风险,基于车-路-环境多维度耦合力学模型展开分析。通过CarSim仿真平台构建了240组工况(涵盖4种典型车速、3种桥梁长度、5级风速梯度及冰雪低附着等复杂环境条件),重点分析了风速、车速(60、80、100、120 km/h)、桥梁长度(20、65、100 m)、路面附着系数、超高(0.06)及圆曲线半径等参数对车辆行驶安全性及横向稳定性的影响,并针对不平稳状态提出了修正方法。研究结果表明:车辆行驶平稳性与风速呈负相关,与超高值呈正相关,当遭遇5级风、桥长为100 m、超高为0.06且为结冰情况时,需将圆曲线半径提升至134、270、466 m才能以抵消横向风荷载,保证车辆行驶时的安全平稳性。Addressing the driving safety risks in bridge-tunnel transition sections of mountain highways under strong crosswinds,an analysis is conducted based on a multi-dimensional coupled mechanical model of vehicle-road-environment.Utilizing the CarSim simulation platform,240 scenarios were constructed,encompassing four typical vehicle speeds,three bridge lengths,five wind speed gradients,and complex environmental conditions such as ice and snow with low adhesion.The focus is on analyzing the impact of parameters such as wind speed,vehicle speed(60,80,100,120 km/h),bridge length(20,65,100 m),road adhesion coefficient,superelevation(0.06),and circular curve radius on vehicle driving safety and lateral stability.Corrective methods are proposed for unstable conditions.The research results indicate that vehicle driving stability is negatively correlated with wind speed and positively correlated with superelevation.When encountering a wind speed of level 5,a bridge length of 100 m,a superelevation of 0.06,and icy conditions,the circular curve radius needs to be increased to 134,270,and 466 m,respectively,to counteract the lateral wind load and ensure safe and stable vehicle operation.

关 键 词：交通工程 山区强侧风 空气动力学 车-路-环境耦合 CarSim仿真 

分 类 号：U491.7[交通运输工程—交通运输规划与管理]