顶管下穿高速公路软基段变形监测实例分析

Analysis of Monitoring of Soft Pipe Jacking Construction of Expressway

在软土地基下部进行顶管施工,势必会使周围土体产生变形,地面发生沉降。文中以某输水管道工程下穿广佛高速公路软基段的顶管工程为例,在顶管施工过程以及完工后对广佛高速公路路基的地表沉降和水平位移进行跟踪监测,通过分析监测数据,总结顶管施工引起的路基变形规律。

In the lower part of the soft soil foundation, pipe construction is bound to cause the surrounding soil deformation and the ground subsidence. this paper, taking a jacking project of a water pipe project from subgrade lower of the Guangzhou-Foshan Expressway as a case, makes some tracking and monitoring in the pipe jacking process and after the completion of the Guangfo Expressway embankment surface subsidence and horizontal displacement, and summarizes the deformation law of roadbed caused by pipe jacking construction through monitoring data analysisi.