避险车道末端消能桶不同组合方式下的拦截性能  

Interception performance of barrels under different combinations at the end of truck escape ramps

作　　者：覃频频[1,2] 张绍坤 邓祖深 黄俊明[1,2] QIN Pinpin;ZHANG Shaokun;DENG Zushen;HUANG Junming(Guangxi Key Laboratory of Manufacturing System&Advanced Manufacturing Technology(Guangxi University),Nanning 530004,China;School of Mechanical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]广西制造系统与先进制造技术重点实验室(广西大学),南宁530004 [2]广西大学机械工程学院,南宁530004

出　　处：《中国科技论文》2022年第10期1105-1110,共6页China Sciencepaper

基　　金：广西自然科学基金资助项目(2020GXNSFAA159173);广西制造系统与先进制造技术重点实验室课题项目(19-050-44-S003)。

摘　　要：针对避险车道末端消能桶布置方案不规范的问题,运用LS-DYNA软件进行了车辆撞击消能桶的动力学仿真试验,研究避险车道末端消能桶在不同组合方式下对失控车辆的拦截性能。首先,建立失控车辆-消能桶有限元模型并进行验证;然后,分析并确定消能桶的布置方案;最后,进行车辆撞击消能桶的仿真试验,并对试验结果进行讨论。结果表明:15个消能桶“矩形”组合、19个消能桶“箭头形”组合、20个消能桶“梯形”组合、25个消能桶“矩形”组合方式下,消能桶可拦截的车辆速度范围分别为0~7.0、0~8.3、0~9.7、0~8.3 m/s;消能桶布置数量大于4排时,拦截性能有所下降,因此消能桶的布置方案宜采用4排布置。Aiming at the problem of the irregular layout of the barrels at the end of the truck escape ramps,LS-DYNA software was used to simulate the dynamics of the vehicle impacting barrels,and the effect of these barrels at the end of the truck escape ramps on the interception performance of out-control vehicles under different combinations was studied.Firstly,finite element models of the vehicle and the barrels were established and validated.Secondly,the scheme of the barrels were analyzed and determined.Finally,the collision simulation between the vehicle and barrels was carried out,and the test results were discussed.The results show that under the combination mode of 15“rectangular”barrels,19“arrow shaped”barrels,20“trapezoidal”barrels and 25“rectangular”barrels,the vehicle speed range that the barrels can intercept is 0-7.0 m/s,0-8.3 m/s,0-9.7 m/s and 0-8.3 m/s,respectively.When the number of barrels is greater than 4 rows,the interception performance will be reduced.Therefore,the arrangement of barrels is recommended to be in 4 rows with the equal number of each row.

关 键 词：避险车道 失控车辆 有限元 消能桶布置方案 拦截性能 

分 类 号：U417.9[交通运输工程—道路与铁道工程]