Numerical simulation analysis of settlement characteristics of roadbed under loads
This study investigated the impact of static and combined dynamic-static loads on the settlement of concrete roadbeds,aiming to enhance the understanding of the characteristics and mechanisms of settlement.It chose a specific concrete road as the research sample and used FLAC 3D software for numerical simulations to assess the roadbed settlement under the two loading conditions.The results indicated a positive correlation between the magnitude of the applied load and the settlement amount.As the load increases,so does the settlement,while a decrease in load leads to reduced settlement.Moreover,the influence of the load on settlement varies with the horizontal distance of the load application points to the settlement center and the depth of the roadbed.Settlement is lower at application points far from the settlement center but higher at closer ones.Regarding depth,areas near the surface show significantly greater settlement than deeper regions.Within the connecting path of multiple loads,the maximum settlement occurs at the center of the load application area,gradually decreasing toward the sides and the deeper sections of the roadbed.Analysis of the settlement curve revealed that the depth of non-uniform impacts under four concentrated loads extended to approximately 10 meters below the surface.The maximum settlement caused by combined dynamic-static loads was roughly 2.8 times greater than that of single static loads,and the settlement center was located at the geometric center of the four load applications.In contrast,the settlement center of static loads created a flat-bottomed settlement zone along the geometric connection of the four load application points.
万方数据
维普
