路桥交界处路基病害及防治技术研究

Research on Subgrade Diseases and Prevention Techniques at the Road and Bridge Junction

汽车数量的不断增加,使越来越多的城市开始出现高架道路。作为连接高架与地面道路关键节点的交界处,路基的质量引起了人们的特别关注。文章结合对工程实例的模拟分析,对路桥交界处路基病害的成因、种类和防治技术手段进行了研究,结果表明,选择液体粉煤灰作为台背回填材料,质量轻、刚度大,可以明显减少路基的竖向沉降,有效防治路桥交界处路基病害的发生。

The continuous increase in the number of cars has led to the emergence of elevated roads in more and more cities.As the key nodes connecting the elevated road and the ground road,the subgrade quality of the junction has attracted special attention.Based on the simulation analysis of engineering examples,this paper studies the causes,types and prevention techniques of subgrade diseases at the road and bridge junction.The results show that the selection of liquid fly ash as the backfill materials for abutment back has light weight and high rigidity,which can significantly reduce the vertical settlement of subgrade and effectively prevent the occurrence of subgrade diseases at the road and bridge junction.