地铁单圆隧道横断面变形监测研究

Research on Deformation Monitor of Cross-section of Single Circular Tunnel of Subway

为了确保地铁运营的安全,地铁隧道结构的变形监测至关重要。该文根据地铁单圆隧道的环片拼装特点,对隧道横断面收敛变形监测方法进行优化。即按照最小二乘法将每个环片进行圆弧拟合,求出横断面的中心坐标,横断面上各点到中心的距离与隧道设计值的较差为环片的变形量;最后,利用C#编写数据断面处理程序,能够快速导入数据并将计算的变形结果可视化显示,对维护地铁隧道结构的安全运行有重要意义。

In order to ensure the safety of the subway operation,the deformation monitoring of the subway tunnel structure is very important. In this paper,according to the characteristics of the ring assembly of the subway single circular tunnel,the monitoring method of tunnel cross section convergence deformation is optimized. That is according to the least square method,each ring is fitted by a circular arc. The center coordinates of the cross section is calculated,and the difference between the distance from each point to the center of the cross section and the design value of the tunnel is the deformation value of the ring; Finally,the C # is used to write the data section processing program. It can lead-in the programe quickly,and the calculated deformation results can be visualized. It has great significance for maintaining the safe operation of the subway tunnel structure.