Influence of Traffic Load on Bearing Capacity and Deformation Characteristics of Loess Subgrade with Different Humidity
In order to study the influence of traffic load on the bearing capacity and settlement deformation of loess roadbed under dif-ferent humidity conditions,the bearing capacity and deformation characteristics of loess roadbed under different moisture content are deeply discussed in this study,the traffic load of different grades and the stress distribution and deformation law of loess roadbed under different moisture content are analyzed.The results show that:(1)With the increase of moisture content,the bearing capacity of loess roadbed decreases gradually.The bearing capacity of the surface layer of roadbed with moisture content of 6.5%is 46.93%lower than that of the orange layer with moisture content of 2.5%.(2)The surface bearing capacity of heavy traffic roadbed is 18.31%and 40.72%higher than that of medium traffic and light traffic.Under heavy traffic,the vertical settlement of loess roadbed is larger,com-pared with medium traffic and light traffic,the vertical settlement of roadbed increases by 21.21%and 75.32%respectively.(3)With the increase of the lateral distance between the roadbed and the center line of the road,the lateral deformation of the roadbed decreases gradually.When the vertical settlement deformation at the center point of the loess roadbed with the moisture content of 4.5%and 6.5%is 2.5%,increased by 27.25%and 113.4%respectively.
万方数据
维普
