A Study On The Lateral Displacement Distribution Of Buses And Trucks In Guangdong

Where the wheel is often driven,the color it leaves on the road is different from the road that is not used so often that the road tire path can be easily observed.Especially in snowy days,these signs are more obvious because the path of the tires is black,and the rest is white.The reason behind this tire path phenomenon is that most vehicles pass through the same location on the road with high frequency,while other locations are barely used.The MEPDG pavement design focuses on the performance of the road surface in the densely packed left and right positions along the tire path,as damage to roads such as cracks and ruts is most likely to occur at these locations.This article discusses the horizontal distribution of wheel tracks of the first and second class roads,urban expressways,and high-grade highway trucks in some cities in Guangdong Province through modern equipment,and then statistically analyzes the wheel wagon tracks obtained.Subsequently,the standard deviation of the normal distribution of truck wheel trace lateral distribution data in different regions was imported into the MEPDG software to obtain road structure disease chart under different road wheel lateral distribution constraints,which was used to express horizontal distribution of wheel traces and show the importance of the differences in subgrade pavement design.At the same time,by analyzing the prediction results of MEPDG,the horizontal distribution of road trucks in different grades in different administrative regions of the province is judged,and whether or not the unified value(secondary parameter)can be adopted or the province(city)can be used,or can be measured all the way(level 1 parameter).The results showed that the difference in road disease indicators caused by the horizontal distribution of the level of the secondary road between the same city and different administrative regions in Guangdong Province exceeded 10%.Therefore,they need to be measured separately,and they cannot be used as a reference or reference.The difference in road disease indicators caused by the horizontal distribution of road traces in different cities but also on the same road is within 5%-10%.There is reference to the significance,but cannot directly use the other party's value;some urban expressway,such as: Dongguan Chang an section of 107 National Road after the urban expressway standard transformation,and the highway's horizontal distribution of the value of the disease caused by the wheel trace difference in 2% Within,so you can refer to each other or even use it directly.