自动化监测系统在既有铁路新增声屏障施工变形监测中的应用
Application of Automatic Monitoring System in Deformation Monitoring of New Sound Barrier Construction in Existing Railway

临近铁路营业线施工可能会引起铁路基础设施变形，干扰和影响行车安全，因此对铁路运营设备设施的位置、形状进行监测，判断其是否出现变形超限具有重要意义。本文将自动化监测系统应用于贵广高铁路基新增声屏障施工变形监测中，在不影响列车运行的情况下对施工范围内轨道、路基水平和竖向位移进行实时自动化监测，结果表明：自动化监测系统能够捕捉到路基声屏障施工引起线路的微小形变，监测期间各监测点的竖向累计变化量最大值为0.61 mm，横向(垂直铁路方向)累积变化量最大值为0.66 mm，纵向(顺铁路方向)累积变化量最大值为？0.73 mm，均小于一等监测预警值1.2 mm，各监测点较为稳定，本工程路基声屏障施工对监测区域线路整体影响较小。
The construction near the railway business line may cause the deformation of railway infrastruc-ture, which will interfere with and affect the traffic safety. Therefore, it is of great significance to monitor the position and shape of railway operation equipment and facilities and judge whether the deformation beyond the limit. In this paper, the automatic monitoring system is applied to the con-struction deformation monitoring of the newly added sound barrier on the Guiyang-Guang- zhou-high-speed railway foundation. The real-time automatic monitoring of the horizontal and ver-tical displacement of the track and subgrade within the construction range is carried out without affecting the train operation. The results show that: The automatic monitoring system can capture the slight deformation of the line caused by the construction of the roadbed sound barrier. During the monitoring period, the maximum value of vertical cumulative change of each monitoring point is 0.61 mm, the maximum value of transverse cumulative change (vertical railway direction) is 0.66 mm, and the maximum value of longitudinal cumulative change (along railway direction) is ？0.73 mm, which are all smaller than the first class monitoring and warning value 1.2 mm. All monitoring points are relatively stable. The construction of roadbed sound barrier has little influence on the whole line in the monitoring area.