半挂汽车列车对路面作用荷载研究

Dynamic Load Exerting on Highway by Tractor-semitrailer

为研究半挂汽车列车对路面作用荷载,建立1/2车辆动力学模型,研究了路面不平度、载质量、车辆速度和胎压等参数对车辆动载系数的影响.研究结果表明,车辆动载系数随着路面不平度、车辆速度和胎压的增加而增加,随着载质量的增加而减小.综合考虑路面不平度、载质量、车辆速度和胎压的影响,对于重载半挂汽车列车,A级路面上动载系数为1.14,B级路面上动载系数为1.19,C级路面上动载系数为1.27,D级路面上动载系数为1.36,为路面设计提供依据.

To study the dynamic load on the highway coming from tractor-semitrailer,a dynamic vehicle mode was developed.And the influences of the road roughness,the vehicle speed,the axle load and the tire pressure on the dynamic load coefficient were studied.It is found that the load coefficient increases with the increase of the road roughness,the vehicle speed and the tire pressure,yet it decreases with the increase of the axle load.Combination the influences of the road roughness,the vehicle speed,the axle load and the tire pressure,the load coefficient is 1.14 for the level A road,and the load coefficient is 1.19 for the level B road,and the load coefficient is 1.27 for the level C road,and the load coefficient is 1.36 for the level D road.