The east operating area of Yantian Port is planned to be developed into an automated container yard,which will be operated by rail-mounted gantry crane（RMG）.Due to the lack of conditions for pile foundation construction on the site,the track foundation area will be reinforced by dynamic compaction replacement method.In response to the extremely complex geological composition and frequent abrupt changes in the area,as well as the high requirements for differential settlement by rail cranes,this article combines the detection data of the completed foundation treatment area on site and adopts the theory of isotropic homogeneous linear deformation to analyze and calculate the post construction settlement and differential settlement of the site.The results show that dynamic compaction replacement has a significant improvement on the foundation settlement,but the differential settlement is relatively large at the junction of the local riprap layer and the fill layer.In response to this conclusion,this article conducts a study on the scheme of automated monitoring and proposes the idea of using a total station automated detection system to monitor areas with high safety risk factors.Through the automatic organization of data and analysis results by the automated monitoring system,the safety of track operation can be monitored and controlled in real time.