With the rapid economic growth, peo

With the rapid economic growth, people's living standards have been greatly improved. People's means of transportation have also developed from the original carriage, bicycle, etc. into today's cars, trucks, etc., and all kinds of cars have become more and more common. With the increasing number of cars and the expanding scale of urban road network, the load-bearing pressure of the road has to increase, which often leads to serious damage to the road surface and traffic congestion. Under the condition that the original road remains unchanged, the increase of traffic flow and the damage of road surface will easily lead to the occurrence of traffic accidents, which will have a serious impact on people's travel. The existing roads are designed according to the original traffic flow to the road bearing pressure index, which can not meet the current road bearing needs. At the same time, with the growth of time, the service life of the original road continues to reduce, and the harm of the road is more and more serious. In order to improve the traffic safety and bearing capacity of the road, the original road must be expanded or reconstructed to some extent by relevant personnel